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WO2019031380A1 - Électrode, batterie, bloc-batterie, véhicule, système de stockage d'énergie, outil électrique et appareil électronique - Google Patents

Électrode, batterie, bloc-batterie, véhicule, système de stockage d'énergie, outil électrique et appareil électronique Download PDF

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Publication number
WO2019031380A1
WO2019031380A1 PCT/JP2018/029022 JP2018029022W WO2019031380A1 WO 2019031380 A1 WO2019031380 A1 WO 2019031380A1 JP 2018029022 W JP2018029022 W JP 2018029022W WO 2019031380 A1 WO2019031380 A1 WO 2019031380A1
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Prior art keywords
battery
electrode
mass
active material
power
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English (en)
Japanese (ja)
Inventor
泰大 池田
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Murata Manufacturing Co Ltd
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Murata Manufacturing Co Ltd
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Priority to JP2019535155A priority Critical patent/JP7006693B2/ja
Publication of WO2019031380A1 publication Critical patent/WO2019031380A1/fr
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22—Electrodes
    • H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/22—Electrodes
    • H01G11/30—Electrodes characterised by their material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present technology relates to an electrode and a battery, and more particularly to an electrode, a battery, a battery pack, a vehicle, a storage system, a power tool and an electronic device.
  • a non-aqueous electrolyte secondary battery is characterized in that at least one of the positive electrode plate and the negative electrode plate contains a fluorine-based polymer copolymer having a weight average molecular weight of 300,000 or more and 600,000 or less. It has been proposed (see Patent Document 1).
  • a main object is to provide a vehicle, a storage system, a power tool and an electronic device.
  • the present inventor develops an electrode capable of further improving battery characteristics and reliability, and a battery having excellent battery characteristics and excellent reliability. In particular, we have completed this technology.
  • an electrode active material layer is provided, and the electrode active material layer contains at least an electrode active material, polyvinylidene fluoride, hexafluoropropylene, and a conductive agent, and the polyvinylidene fluoride and the The mass of the hexafluoropropylene is 5% by mass to 50% by mass with respect to the total mass with hexafluoropropylene, and the mass ratio of the mass of the conductive agent to the mass of the hexafluoropropylene (mass of conductive agent / hexa An electrode is provided, wherein the mass of fluoropropylene is 0.095-50.
  • the electrode active material layer may have pores, and the volume of the pores may be 10% by volume to 25% by volume with respect to the entire volume of the electrode active material layer.
  • the average pore diameter of the pores may be 0.07 ⁇ m to 1.5 ⁇ m.
  • the content of the conductive agent may be 0.3 mass% to 3 mass% with respect to the total mass of the electrode active material layer.
  • the density of the electrode active material layer may be 3.8g / cm 3 ⁇ 4.3g / cm 3.
  • an average particle diameter (D50) of the electrode active material may be 3 ⁇ m to 40 ⁇ m.
  • the average value of the average curve factor of the electrode active material layer may be 1.1 to 2.5.
  • the electrode according to the present technology may further include a current collector, and in the electrode according to the present technology, the peel strength between the electrode active material layer and the current collector may be 20 N / m to 80 N / m.
  • the present technology also provides a battery including at least an electrode according to the present technology.
  • a battery pack comprising the battery according to the present technology
  • a battery pack comprising: a battery according to the present technology; a control unit that controls a use condition of the battery; and a switch unit that switches the use condition of the battery according to an instruction of the control unit.
  • a vehicle comprising: a battery according to the present technology, a driving force conversion device that receives supply of electric power from the battery and converts it into a driving force of a vehicle, a driving unit that drives according to the driving force, and a vehicle control device
  • a power storage device having a battery according to the present technology, a power consumption device to which power is supplied from the battery, a control device for controlling power supply from the battery to the power consumption device, a power generation device for charging the battery , Providing a storage system,
  • An electric tool comprising: a battery according to the present technology; and a movable part to which power is supplied from the battery, Provided is an electronic device including a battery according to the present technology and receiving power supply from the battery.
  • a fluorine-based polymer copolymer having a weight average molecular weight of 300,000 to 600,000 can be used. According to this, it is possible to obtain high capacity and excellent high temperature charge / discharge cycle characteristics, low temperature discharge characteristics and the like.
  • a fluorine-based polymer copolymer a copolymer of vinylidene fluoride and hexafluoropropylene is preferable, and the porosity of the electrode mixture layer is set to 17% to 30%. Thus, it is possible to prevent the electrode mixture layer from falling off and the electrode plate from being cut off.
  • the porosity of the mixture layer of the positive electrode plate is reduced, the electrode mixture layer becomes hard and cutting of the electrode plate is likely to occur, but by setting the porosity to 17% or more, cutting of the electrode plate is prevented it can. If the porosity is less than 17%, the electrode plate may be cut even when using a fluorine-based polymer copolymer, and furthermore, the diffusion efficiency of the electrolyte solution in the mixture layer is lowered to cause charge and discharge. From this point of view, too, the porosity is preferably 17% or more, because the characteristics also deteriorate.
  • the porosity is 17% or more
  • the conductivity decreases due to the decrease in the contact point between the active material and the conductive additive, and the machine due to the decrease in the contact point with the binder
  • the decrease in the target strength may cause structural damage and conductivity decrease in the active material layer due to expansion and contraction of the active material during charge and discharge, which may lower the discharge load characteristics.
  • the present technology is based on the above situation, and according to the present technology, it is possible to provide an electrode that can improve battery characteristics and reliability. Moreover, according to the present technology, by using the electrode, a battery having excellent battery characteristics and excellent reliability can be provided. More specifically, according to the present technology, an effect of excellent electrolytic solution retention property and excellent mechanical strength is exhibited, and further, excellent by combining the electrolytic solution retention property and the mechanical strength. The effect of the discharge load characteristic is exhibited.
  • the battery according to the present technology is not particularly limited in the shape of the battery, the type of the outer package, the type of the electrode reactive material, etc., and may be a primary battery or a secondary battery, for example, cylindrical, square, laminate film type, It is a coin-type, button-type, disc-type, and flat-plate lithium ion secondary battery.
  • the battery according to the present technology can be suitably applied to a battery pack, a vehicle, a power storage system, a power tool, an electronic device, and the like.
  • the electrode of the first embodiment (example of the electrode) according to the present technology includes an electrode active material layer, and the electrode active material layer includes at least an electrode active material, polyvinylidene fluoride, hexafluoropropylene, and a conductive agent.
  • the mass ratio of hexafluoropropylene is 5% by mass to 50% by mass with respect to the total mass of polyvinylidene fluoride and hexafluoropropylene, the mass ratio of the mass of the conductive agent to the mass of hexafluoropropylene ( It is an electrode in which the mass of the conductive agent / the mass of hexafluoropropylene) is 0.095 to 50.
  • Hexafluoropropylene extends the cross-linking length of polyvinylidene fluoride (PVdF) (the cross-linking length means the distance between any two adjacent cross-linking points) and improves the retention of electrolyte solution.
  • the liquid retaining property of the electrolytic solution means a characteristic that can sufficiently contain the electrolytic solution.
  • the electrode strength for example, mechanical strength such as electrode peel strength, etc. below
  • Holding the electrolytic solution causes the electrode (electrode active material layer) to swell and the contact between the electrode active material in the electrode (electrode active material layer) and the conductive agent is disconnected to lower the conductivity. There is.
  • PVdF polyvinylidene fluoride
  • HFP hexafluoropropylene
  • the electrode active material layer has a plurality of pores and be porous, and the plurality of the electrode active material layers is preferably the entire volume of the electrode active material layer.
  • the total volume of the pores that is, the so-called porosity may be any value without particular limitation, but it is preferably 10% by volume to 25% by volume, and preferably 10% by volume to 17% by volume. Is more preferred.
  • the average pore size of the pores may be any average pore size, but is preferably 0.07 ⁇ m to 1.5 ⁇ m.
  • the liquid retention also referred to as liquid absorption
  • the mechanical strength can be more effectively maintained.
  • the content of the conductive agent may be any amount with respect to the total mass of the electrode active material layer, but is 0.3 mass% to 3 mass%. preferable.
  • the conductive agent is sufficiently dispersed in the electrode active material layer, the conductivity is further improved, and the discharge load characteristics are further improved.
  • the adhesion of the binder for example, polyvinylidene fluoride (PVdF) and hexafluoropropylene (HFP)
  • Adhesion is further improved, and electrode strength is further improved. Thereby, the collapse of the electrode active material layer due to the expansion and contraction of the electrode active material during charge and discharge can be suppressed, and the conductivity can be maintained, so that the discharge load characteristics are further improved.
  • the density of the electrode active material layer may indicate any value, but is preferably 3.8g / cm 3 ⁇ 4.3g / cm 3.
  • the binder per volume binder, for example, polyvinylidene fluoride (PVdF) and hexafluoropropylene (HFP)
  • PVdF polyvinylidene fluoride
  • HFP hexafluoropropylene
  • the average particle size (D50) of the electrode active material may be any average particle size (D50), but is preferably 3 ⁇ m to 40 ⁇ m, and 3 ⁇ m to 25 ⁇ m. It is more preferable that By setting the average particle size (D50) of the electrode active material to 3 ⁇ m to 40 ⁇ m or 3 ⁇ m to 25 ⁇ m, the filling property in the electrode is high, the conductivity is further improved, and the liquid retaining property (liquid absorbing property) As the ion conductivity can be further improved, the discharge load characteristics are further improved.
  • the average value of the mean curve factor of the electrode active material layer may be any value, but is preferably 1.1 to 2.5.
  • the electrolytic solution can move more smoothly three-dimensionally in the electrode active material layer.
  • the moving distance of Li ions in the thickness direction to the current collector side of the electrode active material layer becomes shorter.
  • the conductivity of Li ions is further improved, and the discharge load characteristics are further improved.
  • the curved path ratio means the shape of the path of pores connected from one side to the opposite side of the porous electrode electrolyte layer.
  • the small curvature ratio means that the number of vertical through holes in the electrode electrolyte layer is large, and the large curvature ratio means that the number of vertical through holes in the electrode electrolyte layer is small.
  • the electrode of the first embodiment according to the present technology may further include a current collector (which may be a current collector foil, and the same applies hereinafter).
  • a current collector which may be a current collector foil, and the same applies hereinafter.
  • the electrode active material layer The peel strength between the toner and the current collector may be any strength, but is preferably 20 N / m to 80 N / m. When the peel strength is 20 N / m to 80 N / m, both the electrode strength and the liquid retention can be achieved, and the discharge load characteristics are further improved.
  • Polyvinylidene fluoride (PVdF) and hexafluoropropylene (HFP) can be applied as a binder (binder).
  • the binder (binder) may be composed of polyvinylidene fluoride (PVdF) and hexafluoropropylene (HFP), or polyvinylidene fluoride (PVdF) and hexafluoropropylene (HFP), and at least one other. It may be composed of a material.
  • Other materials include, for example, styrene-butadiene rubber, fluorine-based rubber, synthetic rubber such as ethylene propylene diene, and polymeric materials such as polyimide.
  • the conductive agent may contain, for example, a carbon material, a metal, a metal oxide, a conductive polymer, etc. alone or in combination of two or more.
  • the carbon material is, for example, graphite, carbon black, acetylene black, ketjen black or carbon fiber.
  • the metal oxide is, for example, SnO 2 or the like.
  • the conductive agent may be a material having conductivity, and is not limited to the above-described example.
  • the electrode of the first embodiment according to the present technology is, for example, an electrode for a lithium ion secondary battery, and may be a positive electrode or a negative electrode.
  • a positive electrode active material layer is provided, and the positive electrode active material layer includes at least a positive electrode active material, polyvinylidene fluoride, hexafluoropropylene, and conductivity.
  • the mass ratio of the conductive agent to the mass of the hexafluoropropylene is 5 mass% to 50 mass% of hexafluoropropylene with respect to the total mass of the polyvinylidene fluoride and the hexafluoropropylene.
  • the mass of the conductive agent / the mass of hexafluoropropylene) becomes 0.095 to 50.
  • the electrode of the first embodiment according to the present technology is a negative electrode
  • a negative electrode active material layer is provided, and the negative electrode active material layer includes at least a negative electrode active material, polyvinylidene fluoride, and hexafluoropropylene.
  • a conductive agent, and the mass of hexafluoropropylene is 5% by mass to 50% by mass with respect to the total mass of polyvinylidene fluoride and hexafluoropropylene, and the mass of the conductive agent relative to the mass of hexafluoropropylene
  • the ratio (mass of conductive agent / mass of hexafluoropropylene) is 0.095 to 50.
  • the electrode of the first embodiment according to the present technology is a positive electrode for a lithium ion secondary battery will be described in detail.
  • the electrode (positive electrode) according to the first embodiment of the present technology has, for example, a structure in which a positive electrode active material layer is provided on both sides of a positive electrode current collector. Note that the positive electrode active material layer may be provided only on one side of the positive electrode current collector.
  • the positive electrode current collector is made of, for example, a metal foil such as an aluminum foil.
  • the positive electrode active material layer contains, for example, one or more of positive electrode materials capable of inserting and extracting lithium as a positive electrode active material.
  • a lithium-containing compound such as lithium oxide, lithium phosphorus oxide, lithium sulfide or an interlayer compound containing lithium is suitable, and two or more of these are suitable. You may mix and use.
  • a lithium-containing compound containing lithium, a transition metal element and oxygen (O) is preferable.
  • cobalt (Co), nickel (Ni), manganese (Mn) and iron as transition metal elements are preferable. It is more preferable if it contains at least one member of the group consisting of (Fe).
  • lithium-containing compound for example, a lithium composite oxide having a layered rock salt type structure shown in Formula (1), Formula (2) or Formula (3), a spinel type of a spinel type shown in Formula (4) Lithium composite oxide having a structure, or a lithium composite phosphate having an olivine type structure shown in Formula (5), and the like.
  • LiNi 0.50 Co 0.20 Mn 0.30 O 2 Li a CoO 2 (a ⁇ 1), Li b NiO 2 (b ⁇ 1), Li c1 Ni c2 Co 1-c2 O 2 (c1 ⁇ 1,0 ⁇ c2 ⁇ 1), Li d Mn 2 O 4 (d ⁇ 1) or Li e FePO 4 (e ⁇ 1 ) , and the like.
  • M 1 represents cobalt (Co), magnesium (Mg), aluminum (Al), boron (B), titanium (Ti), vanadium (V), chromium (Cr), iron (Fe), copper (Cu) And at least one member selected from the group consisting of zinc (Zn), zirconium (Zr), molybdenum (Mo), tin (Sn), calcium (Ca), strontium (Sr) and tungsten (W).
  • g, h, j and k are such that 0.8 ⁇ f ⁇ 1.2, 0 ⁇ g ⁇ 0.5, 0 ⁇ h ⁇ 0.5, g + h ⁇ 1, ⁇ 0.1 ⁇ j ⁇ 0.2, It is a value within the range of 0 ⁇ k ⁇ 0.1, and the composition of lithium differs depending on the state of charge and discharge, and the value of f represents the value in the complete discharge state).
  • M 2 represents cobalt (Co), manganese (Mn), magnesium (Mg), aluminum (Al), boron (B), titanium (Ti), vanadium (V), chromium (Cr), iron (Fe) And at least one member selected from the group consisting of copper (Cu), zinc (Zn), molybdenum (Mo), tin (Sn), calcium (Ca), strontium (Sr) and tungsten (W).
  • n, p and q are values within the range of 0.8 ⁇ m ⁇ 1.2, 0.005 ⁇ n ⁇ 0.5, ⁇ 0.1 ⁇ p ⁇ 0.2, 0 ⁇ q ⁇ 0.1 Note that the composition of lithium differs depending on the state of charge and discharge, and the value of m represents the value in the fully discharged state.
  • M 3 represents nickel (Ni), manganese (Mn), magnesium (Mg), aluminum (Al), boron (B), titanium (Ti), vanadium (V), chromium (Cr), iron (Fe) And at least one member selected from the group consisting of copper (Cu), zinc (Zn), molybdenum (Mo), tin (Sn), calcium (Ca), strontium (Sr) and tungsten (W).
  • s, t and u are values within the range of 0.8 ⁇ r ⁇ 1.2, 0 ⁇ s ⁇ 0.5, ⁇ 0.1 ⁇ t ⁇ 0.2, 0 ⁇ u ⁇ 0.1 Note that the composition of lithium differs depending on the state of charge and discharge, and the value of r represents the value in the fully discharged state.
  • M 4 represents cobalt (Co), nickel (Ni), magnesium (Mg), aluminum (Al), boron (B), titanium (Ti), vanadium (V), chromium (Cr), iron (Fe) And at least one member selected from the group consisting of copper (Cu), zinc (Zn), molybdenum (Mo), tin (Sn), calcium (Ca), strontium (Sr) and tungsten (W).
  • w, x and y are values within the range of 0.9 ⁇ v ⁇ 1.1, 0 ⁇ w ⁇ 0.6, 3.7 ⁇ x ⁇ 4.1, 0 ⁇ y ⁇ 0.1. Note that the composition of lithium varies depending on the state of charge and discharge, and the value of v represents the value in the fully discharged state).
  • Li z M5 PO 4 (5) (Wherein, M 5 represents cobalt (Co), manganese (Mn), iron (Fe), nickel (Ni), magnesium (Mg), aluminum (Al), boron (B), titanium (Ti), vanadium (V) At least one member selected from the group consisting of niobium (Nb), copper (Cu), zinc (Zn), molybdenum (Mo), calcium (Ca), strontium (Sr), tungsten (W) and zirconium (Zr) Z represents a value within the range of 0.9 ⁇ z ⁇ 1.1 Note that the composition of lithium varies depending on the state of charge and discharge, and the value of z represents a value in a completely discharged state. )
  • inorganic compounds containing no lithium such as MnO 2 , V 2 O 5 , V 6 O 13 , NiS, MoS and the like can also be mentioned.
  • the electrode of the first embodiment according to the present technology is a negative electrode for a lithium ion secondary battery will be described in detail.
  • the electrode (negative electrode) according to the first embodiment of the present technology has, for example, a structure in which a negative electrode active material layer is provided on both sides of a negative electrode current collector. Note that the negative electrode active material layer may be provided only on one side of the negative electrode current collector.
  • the negative electrode current collector is made of, for example, a metal foil such as a copper foil.
  • the negative electrode active material layer is configured to contain, as a negative electrode active material, any one or two or more negative electrode materials capable of inserting and extracting lithium.
  • Examples of negative electrode materials capable of inserting and extracting lithium include non-graphitizable carbon, non-graphitizable carbon, graphite, pyrolytic carbons, cokes, glassy carbons, organic polymer compound fired body And carbon-based materials such as carbon fiber or activated carbon.
  • cokes include pitch coke, needle coke, and petroleum coke.
  • An organic polymer compound fired body is a material obtained by firing and carbonizing a polymer material such as a phenol resin or furan resin at an appropriate temperature, and in part, non-graphitizable carbon or graphitizable carbon Some are classified as Further, examples of the polymer material include polyacetylene and polypyrrole.
  • These carbon-based materials are preferable because they have very little change in the crystal structure generated during charge and discharge, can obtain high charge and discharge capacity, and can obtain good cycle characteristics.
  • graphite is preferable because it has a large electrochemical equivalent and can obtain high energy density.
  • non-graphitizable carbon is preferable because excellent characteristics can be obtained.
  • one having a low charge / discharge potential, specifically one having a charge / discharge potential close to that of lithium metal is preferable because high energy density of the battery can be easily realized.
  • anode material capable of inserting and extracting lithium it is possible to insert and extract lithium, and a material containing at least one of a metal element and a metalloid element as a constituent element can also be mentioned.
  • a material containing at least one of a metal element and a metalloid element as a constituent element can also be mentioned.
  • the negative electrode material may be a single metal element or semimetal element, an alloy or a compound, or may have at least a part of one or more of these phases.
  • the alloy includes an alloy containing one or more metal elements and one or more metalloid elements in addition to an alloy composed of two or more metal elements.
  • the structure includes a solid solution, a eutectic (eutectic mixture), an intermetallic compound or a mixture of two or more of them.
  • metal elements or metalloid elements constituting the negative electrode material examples include magnesium (Mg), boron (B), aluminum (Al), gallium (Ga), indium (In), silicon (Si), germanium (Ge), and the like. ), Tin (Sn), lead (Pb), bismuth (Bi), cadmium (Cd), silver (Ag), zinc (Zn), hafnium (Hf), zirconium (Zr), yttrium (Y), palladium (Pd) Or platinum (Pt). These may be crystalline or amorphous.
  • the negative electrode material a material containing a metal element or metalloid element of Group 4B in the short period periodic table as a constituent element is preferable, and at least one of silicon (Si) and tin (Sn) is particularly preferable. It is contained as a constituent element. Silicon (Si) and tin (Sn) have a large ability to insert and extract lithium (Li), and high energy density can be obtained.
  • tin silicon (Si), nickel (Ni), copper (Cu), iron (Fe), cobalt (Co), manganese as a second component element other than tin (Sn) Of the group consisting of (Mn), zinc (Zn), indium (In), silver (Ag), titanium (Ti), germanium (Ge), bismuth (Bi), antimony (Sb), and chromium (Cr) What contains at least 1 sort is mentioned.
  • Si As an alloy of silicon (Si), for example, tin (Sn), nickel (Ni), copper (Cu), iron (Fe), cobalt (Co), manganese as a second constituent element other than silicon (Si) At least one of the group consisting of (Mn), zinc (Zn), indium (In), silver (Ag), titanium (Ti), germanium (Ge), bismuth (Bi), antimony (Sb) and chromium (Cr) The thing containing 1 type is mentioned.
  • Examples of compounds of tin (Sn) or compounds of silicon (Si) include those containing oxygen (O) or carbon (C), and in addition to tin (Sn) or silicon (Si), the above-described compounds It may contain two constituent elements.
  • the negative electrode material capable of inserting and extracting lithium further includes other metal compounds or polymer materials.
  • Other metal compounds include oxides such as MnO 2 , V 2 O 5 and V 6 O 13 , sulfides such as NiS and MoS, and lithium nitrides such as LiN 3, and polyacetylene as the polymer material And polyaniline or polypyrrole.
  • an LTO-based material lithium-titanium composite oxide
  • the battery of the second embodiment (example of battery) according to the present technology is a battery including at least the electrode of the first embodiment according to the present technology.
  • the battery of the second embodiment according to the present technology may apply the electrode of the first embodiment according to the present technology to the positive electrode, and the first embodiment according to the present technology to the negative electrode.
  • a form of electrode may be applied.
  • the electrode of the first embodiment according to the present technology may be applied to both of the positive electrode and the negative electrode.
  • the battery of the second embodiment according to the present technology is, for example, a lithium ion secondary battery, although the type and the like of the electrode reactant are not particularly limited.
  • the case where the battery of the second embodiment according to the present technology is a lithium ion secondary battery will be described in detail.
  • the battery of the second embodiment according to the present technology can include a separator in addition to the positive electrode and the negative electrode described above.
  • the separator separates the positive electrode and the negative electrode, and allows lithium ions to pass while preventing a short circuit of the current due to the contact of the both electrodes.
  • the separator is composed of, for example, a porous film made of a polyolefin material such as polypropylene or polyethylene, or a porous film made of an inorganic material such as a ceramic non-woven fabric, and two or more kinds of porous films are laminated. It may be a structure.
  • the separator is impregnated with an electrolytic solution which is a liquid electrolyte.
  • the electrolytic solution contains, for example, a solvent and a lithium salt which is an electrolyte salt.
  • the solvent dissolves and dissociates the electrolyte salt.
  • cyclic carbonates such as ethylene carbonate (EC), propylene carbonate (PC) and butylene carbonate (BC); dimethyl carbonate (DMC), ethyl methyl carbonate (EMC), diethyl carbonate (DEC), dipropyl carbonate ( DPC), propyl methyl carbonate (PMC), linear carbonates such as propyl ethyl carbonate (PEC); tetrahydrofuran (THF), 2-methyltetrahydrofuran (2-MeTHF), 1,3 dioxolane (DOL), 4-methyl-1 Cyclic ethers such as 1,2 dimethoxyethane (DME) and 1,2 diethoxyethane (DEE); ⁇ -butyrolactone (GBL), ⁇ - Cyclic esters such as valerolactone (GVL); linear esters such as methyl acetate, ethyl acetate, propyl acetate, methyl formate, ethyl formate, prop
  • tetrahydropyran 1,3 dioxane, 1,4 dioxane, N, N-dimethylformamide (DMF), N, N-dimethylacetamide (DMA), N-methyl pyrrolidinone (NMP), N- Methyl oxazolidinone (NMO), N, N'-dimethylimidazolidinone (DMI), dimethyl sulfoxide (DMSO), trimethyl phosphate (TMP), nitromethane (NM), nitroethane (NE), sulfolane (SL), methyl sulfolane, acetonitrile Mention may be made of (AN), anisole, propionitrile, glutaronitrile (GLN), adiponitrile (ADN), methoxyacetonitrile (MAN), 3-methoxypropionitrile (MPN), diethyl ether.
  • ionic liquids can also be used.
  • a conventionally known ionic liquids can also be used.
  • lithium salt LiPF 6, LiClO 4, LiBF 4, LiAsF 6, LiSbF 6, LiTaF 6, LiNbF 6, LiAlCl 4, LiCF 3 SO 3, LiCH 3 SO 3, LiN (CF 3 SO 2) 2, LiC (CF 3 SO 2) 3 , LiC 4 F 9 SO 3, Li (FSO 2) 2 N, Li (CF 3 SO 2) 2 N, Li (C 2 F 5 SO 2) 2 N, Li (CF 3 SO 2 ) 3 C, LiBF 3 (C 2 F 5 ), LiB (C 2 O 4 ) 2 , LiB (C 6 F 5 ) 4 , LiPF 3 (C 2 F 5 ) 3 , 1 / 2Li 2 B 12 F 12 , Li 2 SiF 6 , LiCl, LiBr, LiI can be mentioned,
  • the positive electrode and the negative electrode are further stacked after being stacked with the stacked electrode body having the separators interposed therebetween or the positive electrode and the negative electrode having the separators disposed therebetween. It may be comprised from the winding electrode body and the exterior body which accommodates a laminated electrode body or a winding electrode body.
  • the electrochemical equivalent of the negative electrode material capable of inserting and extracting lithium is equal to that of the positive electrode material. It may be larger or smaller than the electrochemical equivalent.
  • the battery of the second embodiment according to the present technology may be designed such that the open circuit voltage (that is, the battery voltage) at the time of full charge is, for example, in the range of 4.2 V or more and 4.6 V or less.
  • the battery of the second embodiment according to the present technology may include an electrolyte layer, and in that case, a stacked electrode body or a laminate in which a positive electrode and a negative electrode are laminated with a separator and an electrolyte layer in between.
  • the electrode After laminating the positive electrode and the negative electrode with the separator and the electrolyte layer interposed therebetween, the electrode is further constituted by a wound electrode body which is wound and an outer package which accommodates the laminated electrode body or the wound electrode body.
  • the electrolyte layer is one in which the electrolytic solution is held by the polymer compound, and may contain other materials such as various additives as needed.
  • This electrolyte layer is, for example, a so-called gel electrolyte.
  • a gel electrolyte is preferable because high ion conductivity (for example, 1 mS / cm or more at room temperature) can be obtained and liquid leakage of the electrolyte can be prevented.
  • polyacrylonitrile polyvinylidene fluoride, polytetrafluoroethylene, polyhexafluoropropylene, polyethylene oxide, polypropylene oxide, polyphosphazene, polysiloxane, polyvinyl fluoride, polyvinyl acetate, polyvinyl alcohol, poly Examples thereof include methyl methacrylate, polyacrylic acid, polymethacrylic acid, styrene-butadiene rubber, nitrile-butadiene rubber, polystyrene, polycarbonate, and a copolymer of vinylidene fluoride and hexafluoropyrene. These may be used alone or in combination of two or more. Among them, polyvinylidene fluoride or a copolymer of vinylidene fluoride and hexafluoropyrene is preferable. It is because it is electrochemically stable.
  • the exterior body is not particularly limited as long as it can accommodate the laminated electrode body or the wound electrode body described above.
  • an exterior member including a laminate material constituting a laminate film type lithium ion secondary battery, a cylindrical shape Or the battery can etc. which comprise a square-shaped lithium ion secondary battery are mentioned.
  • the laminate material is, for example, a laminate film in which a fusion bonding layer, a metal layer and a surface protective layer are laminated in this order.
  • the fusion layer is made of, for example, a polyolefin resin such as polyethylene or polypropylene.
  • the metal layer is made of, for example, aluminum or the like.
  • the surface protective layer is made of, for example, nylon or polyethylene terephthalate.
  • the outer package may be a laminated film having another laminated structure, or may be a polymer film alone or a metal film alone.
  • the battery can be made of materials such as iron (Fe), nickel (Ni), aluminum (Al), titanium (Ti), alloys thereof, stainless steel (SUS) and the like.
  • the battery can may be plated with, for example, nickel or the like in order to prevent electrochemical corrosion associated with charge and discharge of the lithium ion secondary battery.
  • the example of the following manufacturing method demonstrates the manufacturing method of the battery at the time of the battery of 2nd Embodiment which concerns on this technique applying the electrode of 1st Embodiment which concerns on this technique with respect to a positive electrode. do.
  • a positive electrode is produced.
  • a positive electrode active material a binder (binder) composed of polyvinylidene fluoride (PVdF) and hexafluoropropylene (HFP), a conductive agent and the like are mixed to obtain a positive electrode mixture, for example, The mixture is dispersed in an organic solvent or the like to form a paste-like or slurry-like positive electrode mixture slurry.
  • the mass of hexafluoropropylene is made to be 5% by mass to 50% by mass with respect to the total mass of polyvinylidene fluoride and hexafluoropropylene.
  • the mass ratio of the mass of the conductive agent to the mass of hexafluoropropylene (HFP) is set to be 0.095 to 50.
  • the positive electrode mixture slurry is uniformly applied to both surfaces of the positive electrode current collector and then dried to form a positive electrode active material layer.
  • the positive electrode active material layer is compression molded using a roll press machine or the like while heating as necessary. The compression molding may be repeated plural times.
  • a negative electrode is produced.
  • a negative electrode active material and, if necessary, a binder and a conductive agent are mixed to form a negative electrode mixture, and then dispersed in, for example, an organic solvent to form a paste or slurry negative electrode mixture slurry. I assume.
  • the negative electrode mixture slurry is uniformly applied to both surfaces of the negative electrode current collector and then dried to form a negative electrode active material layer, and then the negative electrode active material layer is compression molded.
  • the compression molding may be repeated plural times.
  • a negative electrode lead is attached to the negative electrode produced as mentioned above. Subsequently, the positive electrode and the negative electrode are stacked on both sides with a separator interposed therebetween, and the fixing member is adhered to fabricate a stacked electrode body (battery element).
  • the remaining outer peripheral edge excluding the outer peripheral edge of one side is adhered by heat fusion or the like, and the laminated electrode body is housed inside the exterior member containing the laminate material.
  • the electrolytic solution is injected into the inside of the package member containing the bag-like laminate material, and the opening of the package member is sealed by heat fusion or the like to obtain a lithium ion secondary battery.
  • a precursor solution containing a solvent, an electrolyte salt, a polymer compound, and a mixed solvent is applied to each of the positive electrode and the negative electrode, the mixed solvent is evaporated to form an electrolyte layer, and a lithium ion secondary battery is formed. You may get
  • the battery (lithium ion secondary battery) of the second embodiment according to the present technology can also be manufactured, for example, as follows.
  • the positive electrode and the negative electrode are manufactured, and then the positive electrode lead is attached to the positive electrode current collector by welding or the like, and the negative electrode lead is attached to the negative electrode current collector by welding or the like.
  • the positive electrode and the negative electrode are wound via the separator 23.
  • the tip of the positive electrode lead is welded to the safety valve mechanism, and the tip of the negative electrode lead is welded to the battery can, and the wound positive electrode and negative electrode are held between the pair of insulating plates and housed inside the battery can.
  • the electrolytic solution is injected into the inside of the battery can to impregnate the separator.
  • the battery cover, the safety valve mechanism and the thermal resistance element are fixed to the open end of the battery can by caulking via a sealing gasket. Thereby, a lithium ion secondary battery is obtained.
  • Applications of the battery according to the present technology include machines, devices, instruments, devices, and systems (aggregates of a plurality of devices) that can be used as a power source for driving or a power storage source for storing electric power of the battery.
  • the battery used as the power source may be a main power source (power source used preferentially) or an auxiliary power source (power source used instead of the main power source or switched from the main power source).
  • the type of main power supply is not limited to the battery and the battery module.
  • the application of the battery is, for example, as follows.
  • It is a portable household appliance such as an electric shaver.
  • Storage devices such as backup power supplies and memory cards.
  • It is a power tool such as a power drill and a power saw.
  • Medical electronics such as pacemakers and hearing aids. It is a vehicle used for electric vehicles (including hybrid vehicles) and the like. It is a storage system such as a home battery system for storing power in preparation for an emergency or the like. Of course, applications other than the above may be used.
  • the battery according to the present technology is particularly effective to be applied to a battery pack, a vehicle, a storage system, a power tool, and an electronic device. Since excellent battery characteristics and excellent reliability are required, it is possible to effectively improve the performance by using the battery in the present technology.
  • the battery pack is a power source using a battery according to the present technology, and is a so-called assembled battery or the like.
  • the vehicle is a vehicle that operates (travels) using the battery according to the present technology as a driving power source, and as described above, may be an automobile (such as a hybrid vehicle) additionally provided with a driving source other than the battery according to the present technology.
  • the storage system is, for example, a storage system for housing, and is a system using the battery according to the present technology as a power storage source.
  • the power consumption can be used to use a power consumption device, for example, a household electrical appliance.
  • the electric power tool is a tool in which a movable portion (for example, a drill or the like) is movable using the battery according to the present technology as a power supply for driving.
  • the electronic device is a device that exhibits various functions as a power source (power supply source) for driving the battery according to the present technology.
  • the battery pack of the third embodiment according to the present technology includes the battery of the second embodiment according to the present technology.
  • the battery pack of the third embodiment according to the present technology includes the battery of the second embodiment according to the present technology, a control unit that controls the use state of the battery, and an instruction of the control unit. And a switch unit that switches the use state.
  • the battery pack of the third embodiment according to the present technology includes the battery of the second embodiment according to the present technology having excellent battery characteristics and excellent reliability, so that the performance and the reliability of the battery pack can be improved. It leads to improvement.
  • FIG. 1 shows a block configuration of a battery pack.
  • the battery pack includes, for example, a control unit 61, a power supply 62, a switch unit 63, a current measurement unit 64, a temperature detection unit 65, and a voltage detection unit inside a casing 60 formed of a plastic material or the like.
  • a switch control unit 67, a memory 68, a temperature detection element 69, a current detection resistor 70, and a positive electrode terminal 71 and a negative electrode terminal 72 are provided.
  • the control unit 61 controls the operation of the entire battery pack (including the use state of the power supply 62), and includes, for example, a central processing unit (CPU) and the like.
  • Power supply 62 includes one or more batteries (not shown).
  • the power supply 62 is, for example, a battery pack including two or more batteries, and the connection form of the batteries may be in series, in parallel, or a combination of both.
  • the power supply 62 includes six batteries connected in two parallel three series.
  • the switch unit 63 switches the use state of the power supply 62 (whether or not the power supply 62 can be connected to an external device) in accordance with an instruction from the control unit 61.
  • the switch unit 63 includes, for example, a charge control switch, a discharge control switch, a charging diode, and a discharging diode (none of which are shown).
  • the charge control switch and the discharge control switch are, for example, semiconductor switches such as a field effect transistor (MOSFET) using a metal oxide semiconductor.
  • the current measuring unit 64 measures the current using the current detection resistor 70, and outputs the measurement result to the control unit 61.
  • the temperature detection unit 65 measures the temperature using the temperature detection element 69, and outputs the measurement result to the control unit 61. This temperature measurement result is used, for example, when the control unit 61 performs charge / discharge control during abnormal heat generation, or when the control unit 61 performs correction processing when calculating the remaining capacity.
  • the voltage detection unit 66 measures the voltage of the battery in the power supply 62, converts the measured voltage from analog to digital, and supplies the converted voltage to the control unit 61.
  • the switch control unit 67 controls the operation of the switch unit 63 in accordance with the signals input from the current measurement unit 64 and the voltage detection unit 66.
  • the switch control unit 67 disconnects the switch unit 63 (charge control switch) and performs control so that the charging current does not flow in the current path of the power supply 62. .
  • the power supply 62 can only discharge via the discharge diode.
  • the switch control unit 67 is configured to cut off the charging current, for example, when a large current flows during charging.
  • the switch control unit 67 disconnects the switch unit 63 (discharge control switch) so that the discharge current does not flow in the current path of the power supply 62. .
  • the power supply 62 can only charge via the charging diode.
  • the switch control unit 67 is configured to interrupt the discharge current, for example, when a large current flows during discharge.
  • the overcharge detection voltage is 4.2V ⁇ 0.05V
  • the overdischarge detection voltage is 2.4V ⁇ 0.1V.
  • the memory 68 is, for example, an EEPROM, which is a non-volatile memory.
  • the memory 68 for example, numerical values calculated by the control unit 61, information of the battery measured in the manufacturing process stage (for example, internal resistance in an initial state), and the like are stored. If the full charge capacity of the battery is stored in the memory 68, the control unit 61 can grasp information such as the remaining capacity.
  • the temperature detection element 69 measures the temperature of the power supply 62 and outputs the measurement result to the control unit 61, and is, for example, a thermistor or the like.
  • the positive electrode terminal 71 and the negative electrode terminal 72 are connected to an external device (for example, a laptop personal computer) operated using a battery pack, an external device (for example, a charger or the like) used for charging the battery pack, and the like. Terminal. Charging and discharging of the power source 62 are performed via the positive electrode terminal 71 and the negative electrode terminal 72.
  • an external device for example, a laptop personal computer
  • an external device for example, a charger or the like
  • the vehicle according to the fourth embodiment of the present technology includes the battery of the second embodiment according to the present technology, a driving force conversion device that converts power supplied from the battery into driving force, and driving according to the driving force. And a vehicle control device.
  • the vehicle of the fourth embodiment according to the present technology includes the battery of the second embodiment according to the present technology having excellent battery characteristics and excellent reliability, so that the performance and reliability of the vehicle can be improved. Connect.
  • FIG. 2 schematically shows an example of the configuration of a hybrid vehicle adopting a series hybrid system to which the present technology is applied.
  • the series hybrid system is a car that travels by a power drive conversion device using power generated by a generator driven by an engine or power stored in a battery.
  • the hybrid vehicle 7200 includes an engine 7201, a generator 7202, an electric power driving force converter 7203, driving wheels 7204 a, driving wheels 7204 b, wheels 7205 a, wheels 7205 b, batteries 7208, vehicle control devices 7209, various sensors 7210, charging ports 7211. Is mounted.
  • a power storage device (not shown) is applied to the battery 7208.
  • Hybrid vehicle 7200 travels using electric power / driving force conversion device 7203 as a power source.
  • An example of the power driving force converter 7203 is a motor.
  • the electric power driving force converter 7203 is operated by the electric power of the battery 7208, and the rotational force of the electric power driving force converter 7203 is transmitted to the driving wheels 7204a and 7204b.
  • DC-AC direct current to alternating current
  • AC to DC conversion AC to DC conversion
  • the power drive conversion device 7203 can be applied to either an alternating current motor or a direct current motor.
  • the various sensors 7210 control the engine speed via the vehicle control device 7209 and control the opening degree (throttle opening degree) of a throttle valve (not shown).
  • the various sensors 7210 include a speed sensor, an acceleration sensor, an engine speed sensor, and the like.
  • the rotational power of the engine 7201 is transmitted to the generator 7202, which can store the power generated by the generator 7202 in the battery 7208.
  • the battery 7208 can be connected to a power supply external to the hybrid vehicle to receive power from the external power supply using the charging port 211 as an input port, and store the received power.
  • an information processing apparatus that performs information processing related to vehicle control based on information related to a battery may be provided.
  • an information processing apparatus there is, for example, an information processing apparatus that displays a battery remaining amount based on information on a battery remaining amount.
  • the series hybrid vehicle traveling by the motor using the power generated by the generator driven by the engine or the power temporarily stored in the battery has been described as an example.
  • this technology is also effective for parallel hybrid vehicles that use the engine and motor outputs as drive sources, and run using only the engine, running only with the motor, and engine and motor running, as appropriate. It is applicable.
  • the present technology can be effectively applied to a so-called electric vehicle that travels by driving only by a drive motor without using an engine.
  • a power storage system includes a power storage device having the battery of the second embodiment according to the present technology, a power consumption device to which power is supplied from the battery, and the power consumption device from the battery. And a power generation device for charging a battery.
  • the power storage system of the fifth embodiment according to the present technology includes the battery of the second embodiment according to the present technology having excellent battery characteristics and excellent reliability. It leads to improvement.
  • electric power is supplied from a centralized electric power system 9002 such as thermal power generation 9002 a, nuclear power generation 9002 b, hydroelectric power generation 9002 c to power network 9009, information network 9012, smart meter 9007, power hub 9008, etc.
  • Power storage device 9003 is supplied.
  • power is supplied to the power storage device 9003 from an independent power source such as a home power generation device 9004.
  • Power supplied to power storage device 9003 is stored.
  • Power storage device 9003 is used to supply power used in house 9001.
  • the same storage system can be used not only for the house 9001 but also for the building.
  • the house 9001 is provided with a power generation device 9004, a power consumption device 9005, a power storage device 9003, a control device 9010 for controlling each device, a smart meter 9007, and a sensor 9011 for acquiring various information.
  • the respective devices are connected by a power network 9009 and an information network 9012.
  • a solar cell, a fuel cell, or the like is used as the power generation device 9004, and the generated electric power is supplied to the power consumption device 9005 and / or the power storage device 9003.
  • the power consumption device 9005 is, for example, a refrigerator 9005a, an air conditioner 9005b, a television receiver 9005c, and a bath 9005d.
  • the power consumption device 9005 includes an electric vehicle 9006.
  • An electric vehicle 9006 is an electric car 9006 a, a hybrid car 9006 b, and an electric bike 9006 c.
  • the battery (battery unit) of the second embodiment according to the present technology described above is applied to power storage device 9003.
  • Power storage device 9003 is configured of a battery and / or a capacitor.
  • the lithium ion secondary battery may be stationary or may be used in the electric vehicle 9006.
  • the smart meter 9007 has a function of measuring the usage amount of commercial power and transmitting the measured usage amount to the power company.
  • the power network 9009 may combine one or more of direct current feed, alternating current feed, and non-contact feed.
  • the various sensors 9011 are, for example, a human sensor, an illuminance sensor, an object detection sensor, a power consumption sensor, a vibration sensor, a contact sensor, a temperature sensor, an infrared sensor, and the like.
  • the information acquired by the various sensors 9011 is transmitted to the control device 9010.
  • the control device 9010 can transmit information on the home 9001 to an external power company or the like via the Internet.
  • the power hub 9008 performs processing such as branching of power lines and DC / AC conversion.
  • a communication method of the information network 9012 connected to the control device 9010 a method using a communication interface such as UART (Universal Asynchronous Receiver-Transmitter: transmission / reception circuit for asynchronous serial communication), Bluetooth (registered trademark), ZigBee (registered trademark)
  • a wireless communication standard such as Wi-Fi (registered trademark).
  • Wi-Fi registered trademark
  • the Bluetooth (registered trademark) system is applied to multimedia communication, and can perform one-to-many connection communication.
  • ZigBee (registered trademark) uses the physical layer of IEEE (Institute of Electrical and Electronics Engineers) 802.15.4.
  • IEEE 802.15.4 is a name of a short distance wireless network standard called PAN (Personal Area Network) or W (Wireless) PAN.
  • the control device 9010 is connected to an external server 9013.
  • the server 9013 may be managed by any one of a house 9001, a power company, and a service provider.
  • the information transmitted and received by the server 9013 is, for example, power consumption information, life pattern information, power rates, weather information, natural disaster information, and information on power transactions.
  • These pieces of information may be transmitted and received from a home power consumption device (for example, a television receiver), but may be transmitted and received from a device outside the home (for example, a cellular phone or the like).
  • a device having a display function for example, a television receiver, a cellular phone, a personal digital assistant (PDA) or the like.
  • PDA personal digital assistant
  • a control device 9010 that controls each unit is configured of a CPU, a random access memory (RAM), a read only memory (ROM), and the like, and is stored in the power storage device 9003 in this example.
  • Control device 9010 is connected to power storage device 9003, home power generation device 9004, power consumption device 9005, various sensors 9011, server 9013, and information network 9012, and has a function to adjust, for example, the usage amount of commercial power and the power generation amount. have. In addition, it may be equipped with the function etc. which perform power exchange in an electric power market.
  • the power storage device 9003 may store the generated power of not only the centralized power system 9002 such as the thermal power 9002 a, the nuclear power 9002 b, and the hydraulic power 9002 c but also the home power generation device 9004 (solar power generation, wind power generation). it can. Therefore, even if the power generated by the household power generation device 9004 fluctuates, control can be performed such that the amount of power to be transmitted to the outside can be made constant or discharge can be performed as necessary.
  • the power obtained by solar power generation is stored in power storage device 9003, and late-night power with low charge is stored in power storage device 9003 at night, and the power stored by power storage device 9003 is discharged in the time zone where the charge in the daytime is high. Can also be used.
  • control device 9010 is stored in power storage device 9003
  • it may be stored in smart meter 9007 or may be configured alone.
  • power storage system 9100 may be used for a plurality of households in an apartment house, or may be used for a plurality of detached houses.
  • the power tool according to the sixth embodiment of the present technology is a power tool including the battery of the second embodiment according to the present technology and a movable part to which power is supplied from the battery.
  • the power tool of the sixth embodiment according to the present technology includes the battery of the second embodiment according to the present technology having excellent battery characteristics and excellent reliability, so that the performance and reliability of the power tool can be improved. It leads to improvement.
  • FIG. 4 shows a block configuration of the power tool.
  • the electric power tool is, for example, an electric drill, and includes a control unit 99 and a power supply 100 inside a tool body 98 formed of a plastic material or the like.
  • a drill portion 101 which is a movable portion is attached to the tool body 98 so as to be operable (rotatable).
  • the control unit 99 controls the operation of the entire power tool (including the use state of the power supply 100), and includes, for example, a CPU.
  • Power supply 100 includes one or more batteries (not shown).
  • the control unit 99 supplies power from the power supply 100 to the drill unit 101 in response to the operation of an operation switch (not shown).
  • the electronic device 400 includes the electronic circuit 401 of the electronic device main body and the battery pack 300.
  • the battery pack 300 is electrically connected to the electronic circuit 401 via the positive electrode terminal 331a and the negative electrode terminal 331b.
  • the electronic device 400 has, for example, a configuration in which the user can attach and detach the battery pack 300.
  • the configuration of the electronic device 400 is not limited to this, and the battery pack 300 is built in the electronic device 400 so that the user can not remove the battery pack 300 from the electronic device 400. May be
  • the positive electrode terminal 331a and the negative electrode terminal 331b of the battery pack 300 are connected to the positive electrode terminal and the negative electrode terminal of a charger (not shown), respectively.
  • the positive electrode terminal 331a and the negative electrode terminal 331b of the battery pack 300 are connected to the positive electrode terminal and the negative electrode terminal of the electronic circuit 401, respectively.
  • Examples of the electronic device 400 include a notebook personal computer, a tablet computer, a mobile phone (for example, a smartphone), a personal digital assistant (PDA), an imaging device (for example, a digital still camera, a digital video camera), an audio device (for example, Portable audio players), gaming devices, cordless handsets, electronic books, electronic dictionaries, radios, headphones, navigation systems, memory cards, pacemakers, hearing aids, lighting devices, toys, medical devices, robots, etc. It is not limited.
  • a notebook personal computer for example, a tablet computer
  • a mobile phone for example, a smartphone
  • PDA personal digital assistant
  • an imaging device for example, a digital still camera, a digital video camera
  • an audio device for example, Portable audio players
  • gaming devices cordless handsets, electronic books, electronic dictionaries, radios, headphones, navigation systems, memory cards, pacemakers, hearing aids, lighting devices, toys, medical devices, robots, etc. It is not limited.
  • the head-mounted display includes an image display device, a mounting device for mounting the image display device on the head of an observer, and the image display device
  • An electronic device including a mounting member for mounting the mounting device on the mounting device and using the battery of the second embodiment according to the present technology as a power supply for driving
  • the band type electronic device includes a plurality of segments connected in a band shape.
  • the battery of the second embodiment according to the present technology is an electronic device disposed in the segment.
  • the electronic circuit 401 includes, for example, a CPU, a peripheral logic unit, an interface unit, a storage unit, and the like, and controls the entire electronic device 400.
  • Battery pack 300 includes battery assembly 301 and charge / discharge circuit 302.
  • the battery assembly 301 is configured by connecting a plurality of batteries 301 a in series and / or in parallel.
  • the plurality of batteries 301a are connected to, for example, n parallel m series (n and m are positive integers).
  • FIG. 5 shows an example in which six batteries 301a are connected in two parallel three series (2P3S).
  • the battery of the second embodiment may be used as the battery 301a.
  • the charge and discharge circuit 302 controls charging of the assembled battery 301.
  • the charge / discharge circuit 302 controls discharge to the electronic device 400.
  • the porosity, electrode density (density of electrode active material layer), average pore diameter (average pore diameter), average particle diameter of electrode active material (D50), average curvilinearity, peel strength and discharge load characteristics in this example The measurement method is as follows.
  • the porosity was calculated by (1 ⁇ (electrode active material layer density / electrode active material layer true density)) ⁇ 100.
  • the electrode active material layer true density is the sum of the densities of the electrode active material, the conductive agent and the binder present in the electrode active material layer multiplied by the respective composition ratios.
  • the density of the electrode active material layer was calculated according to the following.
  • Electrode density density of electrode active material layer
  • a current collector which may be a current collector foil
  • Average pore size Average pore size (average pore size)
  • the average pore size was determined as follows. In order to obtain a pore size distribution, a mercury intrusion test was performed in a pressure range of 0.2 PSIA to 60000 PSIA using an Autopore IV9500 series [V1.0] manufactured by Micromeritics Instrument Corporation. The average pore size was calculated from the obtained pore volume and specific surface area. The average pore size was calculated by (4 ⁇ total pore volume) / specific surface area.
  • D50 means a particle size corresponding to 50% from the smallest particle when the total particle number is made 100% in a distribution curve in which particle sizes are accumulated from the smallest particle to the largest particle in order.
  • D50 is measured by methods well known to those skilled in the art, and can be measured, for example, with a particle size analyzer, or from TEM (transmission electron microscopy) or SEM (scanning electron microscopy) photographs.
  • TEM transmission electron microscopy
  • SEM scanning electron microscopy
  • the average curve rate was calculated as follows. First, cross-sectioning processing with FIB and acquisition of a cross-sectional image by SEM were repeated with Helios 400S manufactured by FEI, and a three-dimensional structural model was obtained by reconstructing the acquired image. The obtained structural model was binarized into an electrode active material, a conductive agent, a binder part, and a void part by GeoDict manufactured by Math2 Market, and the curve path ratio was calculated.
  • peel strength was measured by carrying out a 180 ° peel test using an Instron 5564 tensile tester.
  • a 25 mm wide and 100 mm long double-sided adhesive tape (G9000 made by Dexerials) is attached to the center of a SUS plate 50 mm wide and 150 mm long, and the double-sided adhesive tape adheres to the active material layer 25 mm wide and 50 mm long I put it on.
  • One end of the test piece was peeled off by 3 mm, and the test piece was joined with a paper piece 25 mm wide and 100 mm long, and the paper piece was pulled and fixed to the chuck of the tester.
  • the sheet was pulled at a tensile speed of 100 mm / min so that the tensile angle was 180 °, and the average of the load from 20 mm to 50 mm from the start of measurement was taken as the peel strength (mN / mm).
  • Discharge load characteristics The discharge capacity of the lithium ion battery was measured under the conditions of a discharge current rate of 0.2 C and 0.5 C at a charge upper limit voltage of 4.5 V, a charge current of 0.2 C, a discharge end voltage of 3.0 V and a temperature of 23 ° C.
  • the discharge load characteristic is the capacity of 0.5 C for 2 C.
  • Example 1 As a positive electrode, 94.8% by mass of LiCoO 2 , 5.18% by mass of a binder (binder), and 0.025% by mass of ketjen black (conductive agent) in a predetermined amount of NMP (N-methyl-2) The resulting mixture was mixed with pyrrolidone), and kneaded and dispersed by a self-revolution mixer to obtain a positive electrode mixture paint.
  • the binder is composed of 95% by mass of polyvinylidene fluoride (PVdF) and 5% by mass of hexafluoropropylene (HFP).
  • the positive electrode mixture paint is applied to a 15 ⁇ m thick aluminum foil, dried at 120 ° C., a positive electrode active material layer is formed, pressure is applied to 3.9 g / cc with a hand press, and vacuum is applied.
  • the positive electrode was produced by drying.
  • Li metal foil was used as a negative electrode.
  • a 25 ⁇ m-thick microporous film made of polyethylene was used as a separator.
  • the separator was sandwiched between the above-mentioned positive electrode and negative electrode attached with tabs, the electrolytic solution was injected, and the laminate was vacuum-sealed by lamination to prepare a single-polar laminated cell.
  • the “amount of conductive agent / the amount of HFP” described in Table 1 and Tables 2 and 3 described later is the mass of the conductive agent relative to the total mass of the “electrode active material layer (positive electrode active material layer) Mass% of conductive agent in positive electrode active material layer) / mass of HFP relative to total mass of electrode active material layer (positive electrode active material layer) (mass% of HFP in electrode active material layer (positive electrode active material layer)) " Means
  • Examples 2 to 37 and Comparative Examples 1 to 4 For Examples 2 to 20, LiCoO 2 , binder (binding agent), ketjen black (conductive agent), and hexafluoropropylene (HFP) (polyvinylidene fluoride (PVdF) described in Table 1 below.
  • the positive electrode and the monopolar laminate cell were manufactured in the same manner as the method described in Example 1 except that the amount of conductive agent and the amount of conductive agent / HFP were used.
  • LiCoO 2 binder (binding agent), ketjen black (conductive agent) and hexafluoropropylene (HFP) (polyvinylidene fluoride (PVdF)) described in Table 2 below.
  • the positive electrode and the monopolar laminate cell were manufactured in the same manner as the method described in Example 1 except that the amount of the conductive agent and the amount of the conductive agent / the amount of HFP were used.
  • Comparative Examples 1 to 4 LiCoO 2 , a binder (binding agent), ketjen black (conductive agent) and hexafluoropropylene (HFP) (polyvinylidene fluoride (PVdF)) described in Table 3 below.
  • a positive electrode and a monopolar laminate cell were produced in the same manner as described in Example 1 except that the amount and the amount of conductive agent / HFP were used.
  • the single-polar laminate cells using the positive electrodes produced in Examples 1 to 37 are different from the single-polar laminate cells using the positive electrodes produced in Comparative Examples 1 to 4 , Had good discharge load characteristics.
  • the ion conductivity is improved by the fact that the HFP amount is 5% to 50% by mass, and the mass ratio of the conductive agent to the mass of the hexafluoropropylene is 0.095 to 50, and the decrease in mechanical strength is also achieved. It can be considered that a monopolar laminate cell having excellent discharge load characteristics was obtained because it can be suppressed.
  • the strength of the electrode active material layer is maintained when the volume of the pores is 10% by volume to 25% by volume with respect to the entire volume of the electrode active material layer.
  • the battery according to the present technology can be mounted on a printed circuit board 1202 (Print circuit board, hereinafter referred to as “PCB”) together with a charging circuit and the like as shown in FIG.
  • PCB printed circuit board
  • a battery according to the present technology in FIG. 6, the secondary battery 1203 is shown among the batteries according to the present technology.
  • electronic circuits such as charging circuits are mounted by a reflow process. be able to.
  • An electronic circuit such as a secondary battery 1203 and a charging circuit mounted on a PCB 1202 is referred to as a battery module 1201.
  • the battery module 1201 is configured as a card type as needed, and can be configured as a portable card type mobile battery.
  • a charge control IC (Integrated Circuit) 1204, a battery protection IC 1205, and a battery remaining amount monitoring IC 1206 are also formed on the PCB 1202.
  • the battery protection IC 1205 controls the charge / discharge operation so that the charge voltage becomes excessive during charge / discharge, the overcurrent does not flow due to the load short circuit, or the overdischarge occurs.
  • a universal serial bus (USB) interface 1207 is attached to the PCB 1202.
  • the power supplied through the USB interface 1207 charges the secondary battery 1203.
  • the charge control IC 1204 controls the charge operation.
  • a predetermined power for example, a voltage of 4.2 V
  • the battery remaining amount of the secondary battery 1203 is monitored by a battery remaining amount monitoring IC 1206, and a display (not shown) indicating the battery remaining amount is made visible from the outside.
  • the USB interface 1207 may be used for load connection.
  • the specific example of the load 1209 described above is as follows.
  • A. Wearable devices sports watches, watches, hearing aids, etc.
  • B. IoT terminals such as sensor network terminals
  • C. Amusement equipment portable game terminal, game controller
  • D. IC board embedded battery real time clock IC
  • Environmental power generation equipment storage elements for power generation elements such as solar power generation, thermoelectric power generation, vibration power generation, etc.
  • FIG. 7 shows an example of the configuration of the universal credit card 1301. It has a card type shape and incorporates an IC chip and a battery (not shown) according to the present technology. Furthermore, a low power consumption display 1302 and an operation unit such as direction keys 1303a and 1303b are provided. Furthermore, a charging terminal 1304 is provided on the surface of the universal credit card 1301.
  • the user can operate the direction keys 1303a and 1303b while looking at the display 1302 to identify a credit card etc. loaded in advance on the universal credit card 1301.
  • a plurality of credit cards are preloaded, information indicating each credit card is displayed on the display 1302, and the user can operate the direction keys 1303a and 1303b to specify a desired credit card. After that, it can be used in the same manner as a conventional credit card. It is needless to say that the above is an example, and the battery (not shown) according to the present technology is applicable to any electronic card other than the universal credit card 1301.
  • wristband type activity meter is also called smart band, and it is possible to obtain data on human activity such as number of steps, movement distance, calories burned, amount of sleep, heart rate etc by simply winding it around the arm It is possible. Furthermore, acquired data can also be managed by a smartphone. Furthermore, it is also possible to provide a mail transmission / reception function, for example, one having a notification function of notifying a user of an incoming mail by means of an LED (Light Emitting Diode) lamp and / or a vibration.
  • LED Light Emitting Diode
  • FIG. 8 and 9 show an example of a wristband type activity meter that measures, for example, a pulse.
  • FIG. 8 shows a configuration example of the appearance of the wristband type activity meter 1501.
  • FIG. 9 shows a configuration example of the main body 1502 of the wristband type activity meter 1501.
  • the wrist band type activity meter 1501 is a wrist band type measuring device that measures, for example, the pulse of a subject by an optical method. As shown in FIG. 8, the wrist band type activity meter 1501 includes a main body 1502 and a band 1503, and the band 1503 is attached to an arm (wrist) 1504 of a subject like a wristwatch. Then, the main unit 1502 irradiates measurement light of a predetermined wavelength to the portion including the pulse of the arm 1504 of the subject, and measures the pulse of the subject based on the intensity of the returned light.
  • the main body unit 1502 is configured to include a substrate 1521, an LED 1522, a light receiving IC 1523, a light shielding body 1524, an operation unit 1525, an arithmetic processing unit 1526, a display unit 1527, and a wireless device 1528.
  • the LED 1522, the light receiving IC 1523, and the light shielding body 1524 are provided on the substrate 1521. Under the control of the light receiving IC 1523, the LED 1522 irradiates measurement light of a predetermined wavelength to a portion including the pulse of the arm 1504 of the subject.
  • the light receiving IC 1523 receives the returned light after the measurement light is irradiated to the arm 1504.
  • the light receiving IC 1523 generates a digital measurement signal indicating the intensity of the returned light, and supplies the generated measurement signal to the arithmetic processing unit 1526.
  • the light shielding body 1524 is provided on the substrate 1521 between the LED 1522 and the light receiving IC 1523.
  • the light shield 1524 prevents the measurement light from the LED 1522 from being directly incident on the light receiving IC 1523.
  • the operation unit 1525 is formed of, for example, various operation members such as a button and a switch, and is provided on the surface of the main body 1502 or the like.
  • the operation unit 1525 is used to operate the wristband type activity meter 1501, and supplies a signal indicating the content of the operation to the arithmetic processing unit 1526.
  • the arithmetic processing unit 1526 performs arithmetic processing for measuring the pulse of the subject based on the measurement signal supplied from the light receiving IC 1523.
  • the arithmetic processing unit 1526 supplies the measurement result of the pulse to the display unit 1527 and the wireless device 1528.
  • the display unit 1527 is formed of, for example, a display device such as an LCD (Liquid Crystal Display), and is provided on the surface of the main body 1502.
  • the display unit 1527 displays the measurement result of the subject's pulse and the like.
  • the wireless device 1528 transmits the measurement result of the subject's pulse to an external device by wireless communication of a predetermined scheme. For example, as illustrated in FIG. 9, the wireless device 1528 transmits the measurement result of the subject's pulse to the smartphone 1505, and causes the screen 1506 of the smartphone 1505 to display the measurement result. Furthermore, data of the measurement result is managed by the smartphone 1505, and the measurement result can be browsed by the smartphone 1505 or stored in a server on the network. Note that any method can be adopted as the communication method of the wireless device 1528.
  • the light receiving IC 1523 can also be used in the case of measuring the pulse at a site other than the arm 1504 of the subject (for example, a finger, an earlobe, etc.).
  • the above-described wristband type activity meter 1501 can accurately measure the pulse wave and the pulse of the subject by removing the influence of the body movement by the signal processing in the light receiving IC 1523. For example, even if the subject exercises intensely such as running, it is possible to accurately measure the pulse wave and pulse of the subject. In addition, for example, even when the subject wears the wristband type activity meter 1501 for a long time to perform measurement, it is possible to remove the influence of the subject's body movement and continue measuring the pulse wave and the pulse accurately. .
  • the power consumption of the wristband type activity meter 1501 can be reduced by reducing the amount of computation.
  • the measurement can be performed by wearing the wristband type activity meter 1501 on the subject for a long time without charging or replacing the battery.
  • a thin battery for example, is housed in the band 1503 as a power source.
  • the wristband type activity meter 1501 includes an electronic circuit of a main body and a battery pack.
  • the battery pack is configured to be removable by the user.
  • the electronic circuit is a circuit included in the main body 1502 described above. The present technology can be applied when using a battery as a power source.
  • FIG. 10 shows a configuration example of the appearance of a wrist band type electronic device 1601 (hereinafter simply referred to as “electronic device 1601”).
  • the electronic device 1601 is, for example, a so-called wearable device of a watch type that is detachable from the human body.
  • the electronic device 1601 includes, for example, a band unit 1611 attached to an arm, a display device 1612 that displays numbers, characters, symbols, and the like, and an operation button 1613.
  • the band portion 1611 is formed with a plurality of holes 1611 a and a protrusion 1611 b formed on the inner circumferential surface (surface on the side that contacts the arm when the electronic device 1601 is attached).
  • the electronic device 1601 In the use state, the electronic device 1601 is bent so that the band portion 1611 has a substantially circular shape as shown in FIG.
  • the size of the diameter can be adjusted according to the thickness of the arm.
  • the protrusion 1611 b is removed from the hole 1611 a, and the band 1611 is stored in a substantially flat state.
  • a sensor according to an embodiment of the present technology is provided, for example, throughout the band portion 1611.
  • the smart watch has the same or similar appearance as the design of the existing watch, and is used by being worn on the user's arm like the watch, and the information displayed on the display, the incoming call or email Etc. to the user.
  • smart watches having functions such as an electronic money function and an activity meter have also been proposed.
  • a display is incorporated on the surface of the main body of the electronic device, and various information is displayed on the display.
  • the smart watch can cooperate with the function of the communication terminal or the like, the content, or the like by performing near field communication such as Bluetooth (registered trademark) with the communication terminal (smartphone or the like), for example.
  • a plurality of segments connected in a band, a plurality of electronic components disposed in the plurality of segments, and a plurality of electronic components in the plurality of segments are connected in at least one segment
  • a flexible circuit board disposed in a serpentine shape By having such a meandering shape, the flexible circuit board is prevented from being disconnected without being stressed even if the band is bent.
  • the smart watch of this application example can perform notification such as an e-mail or an incoming call, record a log such as a user's action history, or make a call.
  • the smart watch has a function as a contactless IC card, and can perform payment, authentication, etc. without contact.
  • the smart watch of this application example incorporates circuit components for performing communication processing and notification processing in a metal band.
  • the band is configured to connect a plurality of segments, and a circuit board, a vibration motor, a battery, and an acceleration sensor are accommodated in each segment.
  • Components, such as a circuit board of each segment, a vibration motor, a battery, and an acceleration sensor, are connected by a flexible printed circuit (FPC).
  • FPC flexible printed circuit
  • FIG. 11 shows an entire configuration (an exploded perspective view) of the smart watch.
  • the band-type electronic device 2000 is a metal band attached to the watch main body 3000, and attached to the arm of the user.
  • the watch main body 3000 includes a dial 3100 for displaying time.
  • the watch body 3000 may display the time electronically on a liquid crystal display or the like instead of the dial 3100.
  • the band-type electronic device 2000 has a configuration in which a plurality of segments 2110 to 2230 are connected.
  • the segment 2110 is attached to one of the band attachment holes of the watch main body 3000, and the segment 2230 is attached to the other band attachment hole of the watch main body 3000.
  • each segment 2110-2230 is comprised of metal.
  • FIG. 12 shows a part of the internal configuration of the band type electronic device 2000.
  • the flexible circuit board 2400 is disposed inside the continuous five segments 2170 to 2210.
  • various electronic components are disposed, and in the segments 2190, 2210, the batteries 2411 and 2421 composed of the battery according to the present technology are disposed, and these components are electrically connected by the flexible circuit board 2400.
  • the segment 2180 between the segment 2170 and the segment 2190 is of relatively small size, and a meandering flexible circuit board 2400 is disposed.
  • the flexible circuit board 2400 is disposed in a state of being sandwiched by the waterproof members.
  • the inside of the segments 2170 to 2210 is waterproof.
  • FIG. 13 is a block diagram showing the circuit configuration of the band type electronic device 2000.
  • the internal circuit of the band type electronic device 2000 has a configuration independent of the watch main body 3000.
  • the watch main body 3000 includes a movement unit 3200 for rotating a hand disposed on the dial 3100.
  • a battery 3300 is connected to the movement unit 3200.
  • the movement unit 3200 and the battery 3300 are incorporated in the case of the watch main body 3000.
  • band type electronic device 2000 connected to the watch main body 3000, electronic components are arranged in three segments 2170, 2190, and 2210.
  • a data processing unit 4101 In the segment 2170, a data processing unit 4101, a wireless communication unit 4102, an NFC communication unit 4104, and a GPS unit 4106 are arranged.
  • Antennas 4103, 4105, and 4107 are connected to the wireless communication unit 4102, the NFC communication unit 4104, and the GPS unit 4106, respectively.
  • the respective antennas 4103 4105 4107 are arranged in the vicinity of slits 2173 described later of the segment 2170.
  • the wireless communication unit 4102 performs near-field wireless communication with another terminal according to, for example, the Bluetooth (registered trademark) standard.
  • the NFC communication unit 4104 performs wireless communication with a reader / writer in proximity according to the NFC standard.
  • the GPS unit 4106 is a positioning unit that receives radio waves from satellites of a system called GPS (Global Positioning System) and measures the current position. Data obtained by the wireless communication unit 4102, the NFC communication unit 4104, and the GPS unit 4106 are supplied to the data processing unit 4101.
  • GPS Global Positioning System
  • a display 4108 In the segment 2170, a display 4108, a vibrator 4109, a motion sensor 4110, and an audio processing unit 4111 are disposed.
  • the display 4108 and the vibrator 4109 function as a notification unit that notifies the wearer of the band type electronic device 2000.
  • the display 4108 is composed of a plurality of light emitting diodes, and notifies the user by lighting or blinking the light emitting diodes.
  • the plurality of light emitting diodes are disposed, for example, in slits 2173 described later of the segment 2170, and are notified of incoming calls, reception of electronic mail, and the like by lighting or blinking.
  • the display 4108 may be of a type that displays characters, numbers, and the like.
  • the vibrator 4109 is a member for vibrating the segment 2170.
  • the band-type electronic device 2000 notifies of an incoming call, an e-mail, and the like by vibration of the segment 2170 by the vibrator 4109.
  • the motion sensor 4110 detects the movement of the user wearing the band type electronic device 2000.
  • an acceleration sensor As the motion sensor 4110, an acceleration sensor, a gyro sensor, an electronic compass, an atmospheric pressure sensor or the like is used.
  • the segment 2170 may also incorporate a sensor other than the motion sensor 4110.
  • a biosensor that detects a pulse of a user wearing the band-type electronic device 2000 may be incorporated.
  • the microphone 4112 and the speaker 4113 are connected to the voice processing unit 4111, and the voice processing unit 4111 performs processing of a call with the other party connected by wireless communication in the wireless communication unit 4102. Further, the voice processing unit 4111 can also perform processing for voice input operation.
  • the segment 2190 incorporates a battery 2411
  • the segment 2210 incorporates a battery 2421.
  • the batteries 2411 and 2421 can be configured by the battery according to the present technology as described above, and supply power for driving the circuits in the segment 2170.
  • the circuit in the segment 2170 and the batteries 2411 and 2421 are connected by a flexible circuit board 2400 (FIG. 18).
  • the segment 2170 includes a terminal for charging the batteries 2411 and 2421.
  • electronic components other than the batteries 2411 and 2421 may be disposed in the segments 2190 and 2210.
  • the segments 2190 and 2210 may be provided with a circuit that controls charging and discharging of the batteries 2411 and 2421.
  • the glasses-type terminal described below can display information such as text, symbols, and images superimposed on the scenery in front of the eyes. That is, a lightweight and thin image display device display module dedicated to a transmissive glasses-type terminal is mounted. A typical example is a head mounted display (head mounted display (HMD)).
  • HMD head mounted display
  • This image display device comprises an optical engine and a hologram light guide plate.
  • the optical engine uses a microdisplay lens to emit image light such as images, text and the like. This image light is incident on the hologram light guide plate.
  • the hologram light guide plate has hologram optical elements incorporated at both ends of the transparent plate, and the image light from the optical engine is propagated through a very thin transparent plate such as 1 mm thick to be observed by the observer's eyes deliver. With such a configuration, a lens having a thickness of 3 mm (including a protection plate before and after the light guide plate) having a transmittance of, for example, 85% is realized.
  • Such a glasses-type terminal enables the player, the team's performance, etc. to be viewed in real time while watching sports, and a tourist guide on the destination can be displayed.
  • the image display unit is configured as a glasses-type. That is, as in the case of ordinary glasses, it has a frame 5003 for holding the right image display unit 5001 and the left image display unit 5002 in front of the eye.
  • the frame 5003 includes a front portion 5004 disposed in front of the viewer, and two temple portions 5005 and 5006 rotatably attached to both ends of the front portion 5004 via hinges.
  • the frame 5003 is made of the same material as that of ordinary glasses, such as metal, alloy, plastic, or a combination thereof.
  • a headphone unit may be provided.
  • the right image display unit 5001 and the left image display unit 5002 are arranged to be located in front of the user's right eye and in front of the left eye, respectively.
  • Temple parts 5005 and 5006 hold the image display parts 5001 and 5002 on the head of the user.
  • the right display drive unit 5007 is disposed inside the temple unit 5005 at the connection point between the front unit 5004 and the temple unit 5005.
  • the left display drive unit 5008 is disposed inside the temple unit 5006 at the connection point between the front unit 5004 and the temple unit 5006.
  • the frame 5003 is equipped with a battery, an acceleration sensor, a gyro, an electronic compass, a microphone / speaker, and the like according to the present technology. Furthermore, an imaging device is attached, and it is possible to shoot still images / moving pictures. Furthermore, it has a controller connected with the glasses unit, for example, by a wireless or wired interface. The controller is provided with a touch sensor, various buttons, a speaker, a microphone, and the like. Furthermore, it has a cooperation function with a smartphone. For example, it is possible to provide information according to the user's situation by utilizing the GPS function of the smartphone.
  • the present technology can also be configured as follows. [1] Equipped with an electrode active material layer,
  • the electrode active material layer contains at least an electrode active material, polyvinylidene fluoride, hexafluoropropylene, and a conductive agent,
  • the mass of the hexafluoropropylene is 5% by mass to 50% by mass with respect to the total mass of the polyvinylidene fluoride and the hexafluoropropylene
  • An electrode wherein the mass ratio of the mass of the conductive agent to the mass of the hexafluoropropylene (mass of the conductive agent / mass of the hexafluoropropylene) is 0.095 to 50.
  • Further comprising a current collector The electrode according to any one of [1] to [7], wherein the peel strength between the electrode active material layer and the current collector is 20 N / m to 80 N / m.
  • a battery comprising at least the electrode according to any one of [1] to [8].
  • a battery pack comprising the battery according to [9].
  • a control unit that controls the use state of the battery; A switch unit that switches the use state of the battery according to an instruction of the control unit.
  • a driving force converter which receives supply of electric power from the battery and converts it into driving force of a vehicle; A driving unit driven according to the driving force; And a vehicle control device.
  • a storage device having the battery according to [9]; A power consumption device to which power is supplied from the battery; A control device for controlling power supply from the battery to the power consuming device; And a power generation device for charging the battery.
  • a movable part to which power is supplied from the battery.
  • An electronic device that receives supply of power from the battery.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne une électrode pouvant améliorer davantage les caractéristiques et la fiabilité d'une batterie. L'invention concerne une électrode comprenant une couche de matière active d'électrode contenant au moins une matière active d'électrode, du fluorure de polyvinylidène, de l'hexafluoropropylène et un agent électroconducteur, la masse de l'hexafluoropropylène par rapport à la masse totale du fluorure de polyvinylidène et de l'hexafluoropropylène étant de 5 à 50 % en masse, et le rapport en masse entre la masse de l'agent électroconducteur et la masse de l'hexafluoropropylène (masse de l'agent électroconducteur/masse de l'hexafluoropropylène) étant compris entre 0,095 et 50.
PCT/JP2018/029022 2017-08-08 2018-08-02 Électrode, batterie, bloc-batterie, véhicule, système de stockage d'énergie, outil électrique et appareil électronique Ceased WO2019031380A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2021172442A1 (fr) * 2020-02-27 2021-09-02
JP2022032167A (ja) * 2020-08-11 2022-02-25 プライムプラネットエナジー＆ソリューションズ株式会社 非水電解質二次電池
CN115832166A (zh) * 2021-09-23 2023-03-21 宁德时代新能源科技股份有限公司 正极极片、二次电池、电池模块、电池包和用电装置
WO2025047554A1 (fr) * 2023-09-01 2025-03-06 株式会社Ａｅｓｃジャパン Électrode négative et batterie secondaire

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002203560A (ja) * 2000-12-28 2002-07-19 Sony Corp 非水電解質二次電池
JP2004079370A (ja) * 2002-08-20 2004-03-11 Sony Corp 電池
WO2017002292A1 (fr) * 2015-06-30 2017-01-05 ソニー株式会社 Système d'accumulation d'énergie, unité de commande ainsi que procédé de charge et de décharge de batterie d'accumulateurs
WO2017131080A1 (fr) * 2016-01-29 2017-08-03 ソニー株式会社 Électrode négative pour batteries secondaires, batterie secondaire, bloc-batterie, véhicule électrique, système de stockage d'énergie électrique, outil électrique et dispositif électronique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003151547A (ja) * 2001-11-08 2003-05-23 Japan Storage Battery Co Ltd 非水電解質二次電池
FR2960705B1 (fr) * 2010-05-27 2012-08-17 Batscap Sa Batterie au lithium protegee contre l'intrusion d'elements pointus
JP2015103288A (ja) * 2013-11-21 2015-06-04 ソニー株式会社 二次電池、電池パック、電動車両および電力貯蔵システム
JP6528666B2 (ja) * 2015-12-09 2019-06-12 株式会社村田製作所 正極活物質、正極、電池、電池パック、電子機器、電動車両、蓄電装置および電力システム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002203560A (ja) * 2000-12-28 2002-07-19 Sony Corp 非水電解質二次電池
JP2004079370A (ja) * 2002-08-20 2004-03-11 Sony Corp 電池
WO2017002292A1 (fr) * 2015-06-30 2017-01-05 ソニー株式会社 Système d'accumulation d'énergie, unité de commande ainsi que procédé de charge et de décharge de batterie d'accumulateurs
WO2017131080A1 (fr) * 2016-01-29 2017-08-03 ソニー株式会社 Électrode négative pour batteries secondaires, batterie secondaire, bloc-batterie, véhicule électrique, système de stockage d'énergie électrique, outil électrique et dispositif électronique

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2021172442A1 (fr) * 2020-02-27 2021-09-02
JP7660286B2 (ja) 2020-02-27 2025-04-11 パナソニックＩｐマネジメント株式会社 非水電解質二次電池用正極活物質、及び非水電解質二次電池
JP2022032167A (ja) * 2020-08-11 2022-02-25 プライムプラネットエナジー＆ソリューションズ株式会社 非水電解質二次電池
JP7150788B2 (ja) 2020-08-11 2022-10-11 プライムプラネットエナジー＆ソリューションズ株式会社 非水電解質二次電池
US11996543B2 (en) 2020-08-11 2024-05-28 Prime Planet Energy & Solutions, Inc. Nonaqueous electrolyte secondary battery including negative electrode active material layer with reasonable large tortuosity ratio
CN115832166A (zh) * 2021-09-23 2023-03-21 宁德时代新能源科技股份有限公司 正极极片、二次电池、电池模块、电池包和用电装置
CN115832166B (zh) * 2021-09-23 2024-01-12 宁德时代新能源科技股份有限公司 正极极片、二次电池、电池模块、电池包和用电装置
WO2025047554A1 (fr) * 2023-09-01 2025-03-06 株式会社Ａｅｓｃジャパン Électrode négative et batterie secondaire

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