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WO2019065290A1 - Bloc-batterie - Google Patents

Bloc-batterie Download PDF

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Publication number
WO2019065290A1
WO2019065290A1 PCT/JP2018/034096 JP2018034096W WO2019065290A1 WO 2019065290 A1 WO2019065290 A1 WO 2019065290A1 JP 2018034096 W JP2018034096 W JP 2018034096W WO 2019065290 A1 WO2019065290 A1 WO 2019065290A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
heat dissipation
case
pack
battery pack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/034096
Other languages
English (en)
Japanese (ja)
Inventor
松元隆志
藤井徳明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of WO2019065290A1 publication Critical patent/WO2019065290A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • 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 invention relates to a battery pack including a battery core pack having a plurality of battery cells held in a cell holder, and a case for housing the battery core pack.
  • a battery core pack having a plurality of battery cells held by a cell holder, and a case for housing the battery core pack, as a battery pack detachably mounted on an electrically powered vehicle such as an electrically assisted bicycle or an electric motorcycle What is equipped is known.
  • Japanese Patent Laid-Open No. 2009-176689 proposes that a heat dissipation sheet be interposed between the side surface of the battery core pack and the case.
  • the heat dissipating sheet is preferably compressed in the thickness direction between the side surface of the battery core pack and the case, and maintained in an elastically deformed state.
  • the heat dissipation sheet can be in close contact with both the side surface of the battery core pack and the inner surface of the case.
  • the heat of the battery pack can be efficiently conducted to the case through the heat dissipation sheet, so that the heat dissipation of the battery pack can be enhanced.
  • an impact load may be added by falling etc. at the time of attachment or detachment operation to an electric vehicle etc.
  • it is difficult to further deform the heat dissipation sheet in a state where the heat dissipation sheet is compressed in the thickness direction and elastically deformed. That is, it is difficult to absorb the impact load by the heat dissipation sheet. Therefore, the impact load is easily transmitted to the battery cell through the case and the heat dissipation sheet, and there is a concern that the impact resistance of the battery pack may be reduced.
  • the main object of the present invention is to provide a battery pack capable of improving both heat dissipation and impact resistance.
  • a battery pack including a battery core pack having a plurality of battery cells held in a cell holder, and a case for housing the battery core pack, the side surface of the battery core pack A heat dissipating sheet for dissipating the heat of the battery cell is interposed between the case and the case, and the heat dissipating sheet is separated from each other by a first portion and a second portion, and the first portion and the first portion. And a third portion partially connecting the two portions.
  • a gap portion in which the heat dissipation sheet is not present exists between the first portion between the side surface of the battery core pack and the case, the second portion, and the third portion.
  • the heat dissipation sheet can be elastically deformed to spread toward the gap portion.
  • the heat dissipation sheet is interposed between the side surface of the battery core pack and the case in a state of being compressed and elastically deformed in the thickness direction, the heat dissipation sheet is further elastically deformed to cause an impact load. It can be absorbed. That is, even if the heat dissipating sheet is in close contact with the side surface of the battery core pack and the case in order to efficiently conduct the heat of the battery cell to the case through the heat dissipating sheet, the battery cell via the heat dissipating sheet Transmission of a load exceeding the load capacity can be suppressed.
  • the ratio of the area of the heat dissipation sheet to the area of the gap portion is adjusted according to the shape of the case or the battery core pack, the arrangement of the battery core pack in the case, etc. Heat dissipation and impact resistance can be easily improved for battery packs of various specifications.
  • the third portion be in a plurality of strip shapes extending between the first portion and the second portion. In this case, it becomes easy to make both the area of the heat dissipation sheet necessary to promote the heat dissipation of the battery cell and the area of the gap portion necessary to satisfactorily deform the heat dissipation sheet to be appropriate sizes. It is possible to further improve the heat dissipation and impact resistance of the pack.
  • the cell holder has an exposed portion for exposing the electrodes of the plurality of battery cells
  • the heat dissipation sheet is interposed between the exposed portion and the case, and faces the first portion.
  • the third portion is disposed at a position where the electrode disposed between the electrode and the electrode facing the second portion faces.
  • the first portion, the second portion, and the third portion are respectively disposed between the electrodes of the plurality of battery cells exposed from the cell holder and the case.
  • At least one of the first portion and the second portion is provided with a slit.
  • the gap portion where the heat dissipation sheet does not intervene is also formed by the slits of at least one of the first portion and the second portion. Accordingly, when the impact load is transmitted to the heat dissipation sheet through the case, the heat dissipation sheet can be elastically deformed more favorably to absorb the impact load. As a result, both the heat dissipation and impact resistance of the battery pack can be more effectively improved.
  • it is possible to make finer adjustments such as the ratio of the area of the heat dissipation sheet to the area of the gap portion, it is possible to more easily improve the heat dissipation and impact resistance for battery packs of various specifications. Become.
  • At least one of the first portion and the second portion is provided with a slit at a position facing between the electrodes.
  • a slit is provided in at least one of the first part and the second part in order to enhance the absorbability of impact load, the heat of the battery cell is efficiently transferred to the case through the first part and the second part. Be able to communicate As a result, it is possible to obtain a battery pack which is excellent in both heat dissipation and impact resistance.
  • FIG. 1 is a schematic perspective view of a battery pack according to an embodiment of the present invention. It is a side view of a battery core pack provided with a heat dissipation sheet. It is an exploded perspective view of a battery core pack. It is a side view of a battery core pack provided with a heat dissipation sheet concerning a modification.
  • FIG. 1 is a schematic perspective view of a battery pack 10 according to the present embodiment.
  • the outer shell case 12 is indicated by a two-dot chain line, and components disposed inside the outer shell case 12 are illustrated.
  • the battery pack 10 can be suitably applied as, for example, a portable battery pack 10 that is removably mounted on an electrically powered vehicle (not shown) such as an electrically assisted bicycle or an electrically driven motorcycle. Therefore, although an example in which battery pack 10 is mounted on an electric vehicle will be described below, the present invention is not particularly limited to this, and battery pack 10 can be applied to various devices that require electric power. . Further, the vertical direction of the battery pack 10 is based on the vertical direction (arrows X1 and X2 in FIG. 1) when the battery pack 10 is mounted on the electric vehicle.
  • the battery pack 10 includes a case 14, a connector 18 in which two battery core packs 16 a and 16 b are connected, a heat dissipation sheet 20, and a battery management unit (BMU) 24. And a connector unit (not shown).
  • the case 14 can be formed of, for example, a metal such as aluminum, a resin (including a fiber reinforced resin), or the like.
  • the case 14 is a bottom case 26 covering the bottom of the connector 18, an outer shell case 12 attached to the upper end of the bottom case 26 and covering the side of the connector 18, and an upper end of the outer shell 12.
  • a top case 28 that covers the top surface of the connector 18.
  • the bottom case 26 is a housing having an opening at its upper end, and a connector portion and the like are accommodated inside.
  • the connector portion is exposed to the outside of the case 14 through a notch or the like formed on the bottom wall of the bottom case 26, and is used as a power supply port of the electric vehicle or a charging device for charging the connector 18. It is possible to connect to.
  • said notch, an electric power supply port, and a charging device are all not shown.
  • the outer shell case 12 is provided with openings at both end portions in the vertical direction. A part of the upper end side of the bottom case 26 is inserted into the opening on the lower end side of the outer shell case 12.
  • a lower fixing groove 30 is formed along the circumferential direction of the outer shell case 12 on the inner wall of the outer shell case 12 above the upper end of the bottom case 26 inserted into the outer shell case 12.
  • the lower battery core pack frame 32 supporting the connector 18 from the lower side is fixed to the lower fixing groove 30.
  • the bottom of the bottom case 26 is provided with a protrusion projecting toward the lower battery core pack frame 32, and the protrusion and the lower battery core pack frame 32 are fixed by bolts or the like. ing.
  • a part of the lower end side of the top case 28 is inserted into the opening on the upper end side of the outer shell case 12.
  • An upper fixing groove 34 is formed in the inner wall of the outer shell case 12 below the lower end of the top case 28 inserted in the outer shell case 12, and the upper fixing groove 34 is in contact with the upper end surface of the connector 18.
  • the upper battery core pack frame 36 in contact is fixed.
  • a connecting body 18 is held between the upper battery core pack frame 36 and the lower battery core pack frame 32.
  • the top case 28 is a housing having an opening at its lower end, and the upper end face is provided with a handle portion 38 that can be gripped when carrying the battery pack 10.
  • the top case 28 and the upper battery core pack frame 36 are also fixed by bolts (not shown) or the like, similarly to the bottom case 26 and the lower battery core pack frame 32.
  • the two battery core packs 16a, 16b constituting the coupling body 18 are configured substantially the same as each other. Therefore, components corresponding to each other of the two battery core packs 16a and 16b will be described in common by attaching the same reference numerals.
  • the two battery core packs 16 a and 16 b are not distinguished from one another, they are also collectively referred to as a battery core pack 16.
  • the battery core pack 16 has a plurality of battery cells 40 (see FIG. 3) and a cell holder 42. As shown in FIG. 1, in the present embodiment, the battery core pack 16 is configured to have a space 43 (see FIG. 1) for accommodating wiring (not shown) or the like between the battery core pack 16 and the connector portion. The lower end is partially cut away.
  • the battery cell 40 has, for example, a cylindrical shape, and the positive electrode terminal 44 and the negative electrode terminal 46 are respectively provided at both ends in the axial direction.
  • a lithium ion secondary battery can be mentioned as a suitable type of the battery cell 40, it is not particularly limited to this, and for example, a secondary battery such as a nickel hydrogen battery or a nickel cadmium battery may be used.
  • the cell holder 42 is configured by combining the positive electrode side holder 42a and the negative electrode side holder 42b, and holds the holding portion 50 for holding the plurality of battery cells 40, the pressing plate portion 53 provided with the exposed portion 52, the holding portion 50 and the pressing portion And a peripheral wall 54 surrounding the plate 53.
  • the positive electrode terminal 44 (electrode) is exposed from the exposed portion 52 of the positive electrode side holder 42a, and the negative electrode terminal 46 (electrode) is exposed from the exposed portion 52 of the negative electrode side holder 42b.
  • the above-mentioned vertical direction hereinafter also referred to as X direction
  • the axial direction of the battery cell 40 arrow Y1 and Y2 directions in FIG. 3, hereinafter also referred to as Y direction
  • vertical direction A direction orthogonal to both the axial direction and the axial direction (directions of arrows Z1 and Z2 in FIG. 3, hereinafter also referred to as Z direction) will be described as a reference.
  • the holding portion 50 has a plurality of insertion holes 56, and holds the battery cells 40 in a state of being respectively inserted into the insertion holes 56.
  • the insertion holes 56 extend along the Y direction, and expose the positive electrode terminal 44 or the negative electrode terminal 46 of the battery cell 40 from the openings at both ends in the extending direction.
  • the diameter of the insertion hole 56 is a size corresponding to the outer diameter of the battery cell 40.
  • the respective positive electrode terminals 44 are disposed flush with one another, and the respective negative electrodes 46 are disposed flush with one another.
  • a potting material (not shown) made of an insulating resin or the like may be filled between the circumferential surfaces of the plurality of battery cells 40 held by the holding unit 50.
  • the holding plate portions 53 are respectively provided on both ends of the holding portion 50 in the Y direction, and through holes are formed as exposed portions 52 at positions corresponding to the openings of the insertion holes 56.
  • the positive electrode terminal 44 and the negative electrode terminal 46 (hereinafter, also collectively referred to as electrodes) are exposed to the outside of the cell holder 42 through the opening of the insertion hole 56 and the exposed portion 52.
  • a plurality of bus bar plates 60 are attached to the pressing plate 53 so as to cover the exposed portion 52 exposing the positive electrode terminal 44 and the exposed portion 52 exposing the negative electrode terminal 46.
  • the holding plate portion 53 is provided with protruding portions 62 interposed between the bus bar plates 60 to insulate them from each other.
  • the two battery core packs 16a and 16b are connected so that the negative electrode terminal 46 side of one battery core pack 16a and the positive electrode terminal 44 side of the other battery core pack 16b are opposed to each other to form a connected body 18 It is done.
  • the side of the positive electrode terminal 44 of one battery core pack 16a and the side of the negative electrode terminal 46 of the other battery core pack 16b in other words, the side surfaces on both sides in the Y direction of the connector 18 (hereinafter, also simply referred to as side surfaces) Face the inner side of the case 12
  • Each of the plurality of bus bar plates 60 connects the positive electrode terminals 44 one another or the negative electrode terminals 46 one another in parallel by a predetermined number, and the protruding parts 64 which enter into the exposed part 52 and come in contact with the electrodes are embossed, for example Etc. are provided.
  • Connection end portions 68 to be inserted into grooves 66 provided on the end surfaces of the peripheral wall portion 54 are provided on the bus bar plate 60, respectively.
  • a plurality of bus bar plates 60 are connected to the connector portion via the BMU 24 in a state of being connected in series with each other by connecting the connection end portion 68 and the above-described lead wires and the like.
  • the upper end portion of one end side (the arrow Y2 side in FIG. 1) of the positive electrode side holder 42a of the battery core pack 16a and the other end side (the arrow Y1 side in FIG. 1) of the negative side holder 42b of the battery core pack 16b The projecting wall 70 which protrudes toward upper side is each provided in the upper end part of.
  • the upper battery core pack frame 36 abuts on the upper end surface of the projecting wall 70.
  • a space 72 is formed between the connector 18 and the upper battery core pack frame 36, and the BMU 24 is disposed in the space 72 (see FIG. 1).
  • the heat dissipation sheet 20 is accommodated between the side surface (exposed portion 52) of the connector 18 and the inner surface of the outer shell case 12 in a compressed state in the thickness direction.
  • the heat radiation sheet 20 provided in the one end side and the other end side of the Y direction of the connection body 18 can be mutually comprised similarly. For this reason, below, the thermal radiation sheet 20 provided in the other end side of the Y direction of the connection body 18 is demonstrated, and the description of the thermal radiation sheet 20 provided in the one end side is abbreviate
  • the heat dissipation sheet 20 is made of, for example, an elastic material or the like capable of promoting the heat dissipation of the battery cell 40 such as silicon resin, and includes a first portion 80, a second portion 82, and a third portion 84. And.
  • the first portion 80 projects from the bus bar plate 60 of FIG. 2 to the negative electrode terminal 46 exposed from the exposed portion 52 provided on one end side of the pressing plate portion 53 of FIG. 3 in the Z direction (arrow Z2 side of FIG. 2). Come through section 64.
  • the second portion 82 is disposed separately from the first portion 80 in the Z direction, and is exposed from the exposed portion 52 provided on the other end side (the arrow Z1 side in FIG. 2) of the pressing plate portion 53 in FIG.
  • the exposed negative electrode terminal 46 is exposed through the protrusion 64 of the bus bar plate 60 of FIG.
  • the third portion 84 is a plurality of strip shapes partially connecting the first portion 80 and the second portion 82, and between the negative electrode terminal 46 facing the first portion 80 and the negative electrode terminal 46 facing the second portion 82.
  • the negative electrode terminal 46 disposed at the bottom of the bus bar plate 60 is exposed via the protrusion 64 of the bus bar plate 60. Therefore, there is a gap portion 86 between the first portion 80, the second portion 82, and the third portion 84 between the side surface of the connector 18 and the outer shell case 12, and the heat dissipation sheet 20 does not intervene.
  • the BMU 24 controls the charge and discharge of the battery core pack 16, the communication unit that communicates with the electric vehicle and the charging device, and the state of the battery core pack 16 detected from the temperature and voltage of the battery cells 40.
  • a storage unit for storing (all not shown).
  • the battery pack 10 according to the present embodiment is basically configured as described above.
  • the battery cell 40 can be charged by holding the handle portion 38, carrying the battery pack 10 in the vicinity of the charging device, and connecting the connector portion and the charging device.
  • the battery cell 10 can be discharged by mounting the battery pack 10 gripped and carried by the handle portion 38 on the electric vehicle and connecting the connector portion and the power supply port.
  • the battery pack 10 When the battery pack 10 is attached to or detached from the charging device or the electric vehicle as described above, the battery pack 10 may fall and an impact load may be applied. Further, the battery cell 40 generates heat as the charge and discharge are performed as described above.
  • a gap portion 86 in which the heat dissipation sheet 20 does not intervene between the first portion 80 between the side surface of the coupling body 18 and the outer shell case 12, the second portion 82 and the third portion 84. Is provided. Therefore, when the above-mentioned impact load is transmitted to the heat dissipation sheet 20 through the case 14, the heat dissipation sheet 20 can be elastically deformed so as to spread toward the gap portion 86 and can absorb the impact load.
  • the heat dissipation sheet 20 is interposed between the side surface of the connecting member 18 and the outer shell case 12 in a state of being compressed in the thickness direction and elastically deformed.
  • the heat dissipation sheet 20 can be brought into close contact with the side surface (bus bar plate 60) of the coupling body 18 and the outer shell case 12 so that the heat of the battery cell 40 can be efficiently transferred to the case 14 through the heat dissipation sheet 20. It can be conducted and dissipated.
  • the heat dissipating sheet 20 expands toward the gap portion 86 It is possible to further elastically deform. That is, since the impact load applied to the battery pack 10 can be prevented from being transmitted to the battery cell 40 through the heat dissipation sheet 20, the application of a load that exceeds the load resistance to the battery cell 40 can be suppressed.
  • this battery pack 10 it is possible to improve both heat dissipation and shock resistance. Further, in this battery pack 10, the ratio of the area of the heat dissipation sheet 20 to the area of the gap portion 86 according to, for example, the shapes of the case 14 and the battery core pack 16, the arrangement of the battery core pack 16 in the case 14, etc. By adjusting etc., the heat dissipation and impact resistance can be easily improved for the battery pack 10 of various specifications.
  • the third portion 84 is in the form of a plurality of strips extending between the first portion 80 and the second portion 82.
  • the first portion 80, the second portion 82, and the third portion 84 are respectively disposed so as to be interposed between the electrodes of the plurality of battery cells 40 and the outer shell case 12. Therefore, even if the heat dissipation sheet 20 is provided with the gap portion 86 in order to enhance the absorption of impact load, the heat dissipation sheet 20 can efficiently transfer the heat of the battery cell 40 to the case 14. That is, the battery pack 10 excellent in both heat dissipation and impact resistance can be obtained.
  • the battery pack 10 may include a heat dissipation sheet 90 instead of the heat dissipation sheet 20 described above.
  • FIG. 4 is a side view of a battery core pack 16b provided with a heat dissipation sheet 90 according to a modification.
  • components having the same or similar functions and effects as the components shown in FIGS. 1 to 3 are denoted by the same reference numerals, and the detailed description will be omitted.
  • the heat dissipating sheet 90 is configured in the same manner as the above-described heat dissipating sheet 20 except that a plurality of slits 80 a and 82 a are provided in each of the first portion 80 and the second portion 82.
  • the first portion 80 is provided with a plurality of slits 80a extending along the X direction with respect to a position facing through the bus bar plate 60 between the negative electrode terminals 46 (electrodes).
  • the second portion 82 is provided with a plurality of slits 82 a extending along the X direction with respect to a position facing through the bus bar plate 60 between the negative electrode terminals 46 (electrodes).
  • the slits 80a and 82a of the first portion 80 and the second portion 82 also form a gap portion 92 in which the heat dissipation sheet 90 does not intervene. That is, when the above-mentioned impact load is transmitted to the heat dissipation sheet 90 through the case 14, the heat dissipation sheet 90 can be elastically deformed so as to spread toward the inside of the slits 80a and 82a, The impact load can be absorbed better. As a result, both the heat dissipation and impact resistance of the battery pack 10 can be more effectively improved.
  • the ratio of the area of the heat dissipation sheet 90 to the area of the gap portion 92 can be further finely adjusted, the heat dissipation and impact resistance of the various specifications of the battery pack 10 can be more easily improved. It will be possible to
  • the slits 80a and 82a are provided to face each other through the bus bar plate 60 at positions between the negative electrode terminals 46, the slits 80a and 82a may be provided to enhance absorption of impact load.
  • the heat of the battery cell 40 can be efficiently transferred to the case 14 through the one portion 80 and the second portion 82. As a result, the battery pack 10 excellent in both heat dissipation and impact resistance can be obtained.
  • a plurality of slits 80a and 82a are respectively provided for the above-described portions of both the first portion 80 and the second portion 82, but in the case of being particularly limited to this, Absent.
  • the slits 80a and 82a may be provided in only one of the first portion 80 and the second portion 82.
  • the locations where the slits 80a and 82a are provided, the extending direction, the shape, the number, and the like of the slits 80a and 82a are not particularly limited.
  • the battery pack 10 which concerns on said embodiment, we decided to provide the connection body 18 which connected two battery core pack 16a, 16b.
  • the battery pack 10 may include only one battery core pack, or may include a connector (not shown) in which three or more battery core packs are connected.
  • the first portion 80 and the second portion 82 are disposed separately from each other on one end side and the other end side in the Z direction on the side surface of the connector 18, but in particular It is not limited to The first portion 80 and the second portion 82 may be disposed separately from each other on the side surface of the connector 18, and may be separately disposed, for example, on one end side and the other end side in the X direction. Furthermore, the shape and the number of the third portions 84 are not limited to the above embodiment, and can be set variously according to the arrangement of the electrodes of the battery cell 40 held by the cell holder 42 and the like.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un bloc-batterie (10) comprenant un bloc-noyau de batterie (16) comptant une pluralité de cellules de batterie (40), maintenues par un support de cellule (42), et un boîtier (14), permettant de recevoir le bloc-noyau de batterie (16). Une feuille de dissipation de chaleur (20), permettant de dissiper la chaleur provenant des cellules (40), est interposée entre le boîtier (14) et une surface latérale du bloc-noyau de batterie (16). La feuille de dissipation de chaleur (20) comporte une première partie (80) et une deuxième partie (82), disposées de façon à être séparées l'une de l'autre, et des troisièmes parties (84), reliant partiellement la première partie (80) et la deuxième partie (82).
PCT/JP2018/034096 2017-09-29 2018-09-14 Bloc-batterie Ceased WO2019065290A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017189861A JP2019067559A (ja) 2017-09-29 2017-09-29 バッテリパック
JP2017-189861 2017-09-29

Publications (1)

Publication Number Publication Date
WO2019065290A1 true WO2019065290A1 (fr) 2019-04-04

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JP6790176B1 (ja) * 2019-06-04 2020-11-25 本田技研工業株式会社 バッテリパック
JPWO2024195779A1 (fr) * 2023-03-23 2024-09-26

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WO2013084937A1 (fr) * 2011-12-09 2013-06-13 本田技研工業株式会社 Structure de fixation de batterie
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WO2015019429A1 (fr) * 2013-08-07 2015-02-12 株式会社日立製作所 Module de batterie

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WO2013084937A1 (fr) * 2011-12-09 2013-06-13 本田技研工業株式会社 Structure de fixation de batterie
JP2013225431A (ja) * 2012-04-23 2013-10-31 Toyota Motor Corp 電池モジュール
JP2014216113A (ja) * 2013-04-24 2014-11-17 日立オートモティブシステムズ株式会社 蓄電モジュール
WO2015019429A1 (fr) * 2013-08-07 2015-02-12 株式会社日立製作所 Module de batterie

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