[go: up one dir, main page]

WO2018101634A1 - Pile rechargeable - Google Patents

Pile rechargeable Download PDF

Info

Publication number
WO2018101634A1
WO2018101634A1 PCT/KR2017/012640 KR2017012640W WO2018101634A1 WO 2018101634 A1 WO2018101634 A1 WO 2018101634A1 KR 2017012640 W KR2017012640 W KR 2017012640W WO 2018101634 A1 WO2018101634 A1 WO 2018101634A1
Authority
WO
WIPO (PCT)
Prior art keywords
cap plate
terminal
secondary battery
electrode
insulating
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/KR2017/012640
Other languages
English (en)
Korean (ko)
Inventor
이은중
원희연
유대형
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.)
Samsung SDI Co Ltd
Original Assignee
Samsung SDI 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 Samsung SDI Co Ltd filed Critical Samsung SDI Co Ltd
Priority to CN201780073741.4A priority Critical patent/CN110024201B/zh
Publication of WO2018101634A1 publication Critical patent/WO2018101634A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/155—Lids or covers characterised by the material
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/562—Terminals characterised by the material
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • Embodiments of the present invention relate to a secondary battery.
  • Secondary batteries unlike primary batteries that cannot be charged, mean batteries that can be repeatedly charged and discharged, and have been applied to various technical fields throughout the industry. In addition, as technology development and demand for mobile devices increase, the demand for secondary batteries as an energy source is rapidly increasing.
  • the secondary battery may be used in a form in which a single battery or a plurality of batteries are electrically connected according to the type of electronic device used therein, and may be connected to a protection circuit module for preventing overcharge, overcurrent, etc. of the secondary battery.
  • a protection circuit module for preventing overcharge, overcurrent, etc. of the secondary battery.
  • poor connection or the like may occur due to changes in the shape of the terminal during the manufacturing process of the secondary battery.
  • Embodiments of the present invention provide a secondary battery capable of preventing the shape of the terminal from changing during the manufacturing process of the secondary battery.
  • cans An electrode assembly housed inside the can; A cap plate for sealing the can; And a first terminal disposed on the cap plate and electrically connected to the cap plate, wherein the first terminal extends from the first part and is parallel to the cap plate and extends from the first part.
  • the shape of the terminal may be prevented from changing during the manufacturing process of the secondary battery.
  • the scope of the present invention is not limited by these effects.
  • FIG. 1 is a perspective view schematically illustrating a rechargeable battery according to an exemplary embodiment of the present invention.
  • FIG. 2 is an exploded perspective view schematically illustrating the rechargeable battery of FIG. 1.
  • FIG. 3 is a perspective view schematically illustrating an example of a first terminal of the rechargeable battery of FIG. 1.
  • FIG. 4 is a perspective view schematically illustrating a coupling state of a secondary battery and a protection circuit module of FIG. 1.
  • FIG. 5 is a perspective view schematically illustrating a modification of the first terminal of FIG. 3.
  • FIG. 6 is a perspective view schematically illustrating another example of the first terminal of the rechargeable battery of FIG. 1.
  • FIG. 7 is a schematic cross-sectional view taken along line II ′ of FIG. 6.
  • Secondary battery cans; An electrode assembly housed inside the can; A cap plate for sealing the can; And a first terminal disposed on the cap plate and electrically connected to the cap plate, wherein the first terminal extends from the first part and is parallel to the cap plate and extends from the first part.
  • the second part may extend in a direction different from the longitudinal direction of the first part.
  • a first bent groove may be formed at a boundary between the first area and the second area.
  • the reinforcement part may be a folding part in which an edge located at an opposite side to the second part among the edges of the first part parallel to the longitudinal direction of the cap plate is folded onto the first part.
  • the shortest distance between the end of the folded portion and the welding portion may be 0.5mm to 1mm.
  • the width of the folded portion perpendicular to the longitudinal direction of the cap plate may be 0.4mm to 0.7mm.
  • the weld part may include a pair of weld parts spaced apart from each other, and the first part may include a slit penetrating the first part between the pair of weld parts.
  • the distance between the pair of welds and the slit may be 0.5mm to 1mm, respectively.
  • the reinforcement part may be a ridge in which a part of the first part protrudes convexly in a direction opposite to the cap plate.
  • the height of the ridge may be greater than the thickness of the first part, and may be less than twice the thickness of the first part.
  • the first terminal and the cap plate are formed of different materials
  • the secondary battery includes a coupling piece formed of the same material as the first terminal between the first terminal and the cap plate. It may further include.
  • the cap plate may include an electrode pin electrically connected to the electrode assembly, and the secondary battery may include a second terminal disposed on the cap plate and spaced apart from the first terminal, and the cap plate;
  • the electronic device may further include a first insulating tape between the second terminals.
  • the first insulating tape may include a first insulating portion covering an area of the cap plate overlapping the second terminal, and a continuous portion of the four insulating sides of the can. It may include a second insulating portion and a third insulating portion respectively covering some of the two sides facing each other.
  • the secondary battery may further include a second insulating tape disposed between the first insulating portion and the second terminal.
  • the thickness of the second insulating tape may be thicker than the thickness of the first insulating tape.
  • the second terminal may include a first electrode tab connected to the electrode pin, a second electrode tab spaced apart from the first electrode tab along a length direction of the cap plate, and the first electrode.
  • the display device may include a temperature element disposed between the tab and the second electrode tab and connected to the first electrode tab and the second electrode tab.
  • the secondary battery may further include a fixing member covering the second terminal and fixing the second terminal.
  • first and second may be used to describe various components, but the components should not be limited by the terms. The terms are only used to distinguish one component from another.
  • FIG. 1 is a perspective view schematically illustrating a rechargeable battery according to an exemplary embodiment of the present invention
  • FIG. 2 is an exploded perspective view schematically illustrating a rechargeable battery of FIG. 1
  • FIG. 3 is a view of a first terminal of the rechargeable battery of FIG. 1.
  • 4 is a perspective view schematically illustrating an example
  • FIG. 4 is a perspective view schematically illustrating a coupling state of a secondary battery and a protection circuit module of FIG. 1.
  • a secondary battery 1 may include a bare cell B, a first terminal 30, a second terminal 40, and a first insulating tape 50. ), A second insulating tape 60, and a fixing member 70.
  • the bare cell B is a rechargeable secondary battery, for example, may be configured as a lithium-ion battery.
  • the bare cell B includes a can 10 including an opening, an electrode assembly 12 accommodated inside the can 10 through the opening of the can 10, and a cap plate 20 sealing the opening of the can 10. ) May be included.
  • the can 10 may be made of a metallic material in the shape of a substantially hexahedron having one side open.
  • can 10 may be made of aluminum or an aluminum alloy.
  • An electrolyte may be accommodated together with the electrode assembly 12 in the can 10.
  • the electrode assembly 12 may include a first electrode plate and a second electrode plate coated with the electrode active material, and a separator interposed therebetween.
  • the first electrode plate and the second electrode plate have different polarities.
  • the electrode assembly 12 may be manufactured by winding the first electrode plate, the separator, and the second electrode plate sequentially to be stacked in a jellyroll form.
  • the electrode assembly 12 may be a laminate in which the first electrode plate, the separator, and the second electrode plate are sequentially stacked.
  • the opening can be sealed by the cap plate 20.
  • the cap plate 20 may be made of a metallic material such as aluminum or an aluminum alloy. The part where the cap plate 20 and the can 10 contact each other may be joined by laser welding or the like.
  • the cap plate 20 may include an electrode pin 21.
  • the electrode pin 21 may be electrically connected to the electrode assembly 12 through the cap plate 20 and may protrude along the direction away from the cap plate 20.
  • the first electrode plate of the electrode assembly 12 is connected to the electrode pin 21
  • the second electrode plate of the electrode assembly 12 is electrically connected to the cap plate 20, and the electrode pin 21
  • the cap plate 20 may have different polarities. Therefore, a gasket 23 may be provided between the electrode pin 21 and the cap plate 20 to prevent a short circuit between the electrode pin 21 and the cap plate 20.
  • the cap plate 20 and the can 10 may have the same polarity.
  • the electrode pin 21 may have the polarity of the negative electrode
  • the can 10 and the cap plate 20 may have the polarity of the positive electrode.
  • the first terminal 30 may be disposed on the partial region 20a of the cap plate 20, and the second terminal 40 may be disposed on the other region 20b of the cap plate 20. In an embodiment, the first terminal 30 and the second terminal 40 may be disposed opposite to each other with respect to the electrode pin 21.
  • the first terminal 30 and the cap plate 20 may include different materials.
  • the cap plate 20 may be formed of aluminum or an aluminum alloy, and the first terminal 30 may be formed of nickel.
  • the coupling piece 22 may be further included on the cap plate 20.
  • the coupling piece 22 may be made of the same material as the first terminal 30.
  • the first terminal 30 and the second terminal 40 may electrically connect the secondary battery 1 to the protection circuit module.
  • the first and second terminals 30 and 40 are welded to the connection ends 110 formed on the circuit board 100 of the protection circuit module, respectively, so that the secondary battery 1 is a protection circuit. It can be electrically connected to the module.
  • One or more secondary batteries 1 may be electrically connected to the protection circuit module, and the overcharge, overdischarge, overcurrent, short circuit, reverse voltage, etc. of the secondary battery 1 may be prevented from the circuit board 100 of the protection circuit module.
  • a plurality of devices may be mounted.
  • the first terminal 30 includes a first part 31 parallel to the cap plate 20, a second part 32 extending from the first part 31 and bent relative to the first part 31, and a first part 31. It may include a reinforcing portion formed on one part (31).
  • the second part 32 may extend from the first part 31 in a direction different from the length direction of the first part 31. For example, the second part 32 may extend in a direction perpendicular to the longitudinal direction of the first part 31.
  • the first part 31 is a first part S1 which is an area connected to the second part 32 and a first part S1 which is adjacent to the first area S1 and is welded with the cap plate 20. It may include a second area (S2), wherein the bending position of the second part 32 is determined at the boundary between the first area (S1) and the second area (S2) and the bending of the second part 32 is easy.
  • the first bent groove G1 may be formed.
  • the reinforcement part formed in the first part 31 is continuously formed over the first area S1 and the second area S2, so that the shape of the first terminal 30 is changed during the manufacturing process of the secondary battery 1. It can prevent the change.
  • the reinforcing part of the edges of the first part 31 parallel to the longitudinal direction of the cap plate 20, the edge located on the side opposite to the second part 32 is folded on the first part 31. (33).
  • the first terminal 30 After the first terminal 30 is fixed on the cap plate 20 by a jig or the like, a welding rod is brought into contact with the welding portion W of the second region S2 to perform welding on the cap plate 20. Are welded. After the welding is completed, the jig fixing the first terminal 30 is removed. At this time, since the first terminal 30 has a thin thickness of about 0.1T, the first region 30 may be formed by a magnet or the like included in the jig. As S1) is easily heard, bending or the like may occur in the first part 31. In particular, since the width of the first part 31 is minimized in the region where the first bending groove G1 is formed, the first region S1 based on the imaginary line BL formed along the first bending groove G1. ) May be bent or bent upwards, whereby the position of the second part 32 is not aligned with the connection end 110 formed on the circuit board 100 of the protection circuit module, and thus the position is displaced. ), Welding defects may occur.
  • the first region S1 can be prevented from bending or bending upward based on the imaginary line BL. Alignment between the second part 32 and the connection end 110 may be maintained to improve manufacturing efficiency of the module including the secondary battery 1.
  • the first distance (D1) between the end of the folded portion 33 and the welding portion (W) may be 0.5mm to 1mm.
  • the first distance D1 refers to the shortest distance measured from the end of the folded portion 33 to the outermost region of the weld portion W in a direction perpendicular to the longitudinal direction of the cap plate 20.
  • the welding rod When the first distance D1 is larger than 1 mm, the welding rod is positioned close to the edge of the first part 31 on which the fold portion 33 is formed, or close to the edge of the opposite side, or over-welded and welded. Poor welding, such as burn, may occur.
  • the first distance D1 is smaller than 0.5 mm, a large amount of reactive current flows to the folded portion 33 having reduced resistance due to an increase in thickness, thereby reducing the welding efficiency, and the folded portion 33 ) And the electrode can be in contact with each other, thereby also causing a poor welding.
  • the width L of the folded portion 33 perpendicular to the longitudinal direction of the cap plate 20 may be 0.4 mm to 0.7 mm.
  • the width L of the folded portion 33 is larger than 0.7 mm, as the distance between the tip of the folded portion 33 and the welding rod becomes closer during welding, the likelihood of welding failure due to an increase in reactive current increases.
  • the width L of the folded portion 33 is smaller than 0.4 mm, it is difficult to form the folded portion 33 and it is difficult to effectively prevent the first region S1 from bending or bending upward.
  • the second terminal 40 is disposed on the cap plate 20 and may be electrically connected to the electrode pin 21.
  • the second terminal 40 has a first electrode tab 41 connected to the electrode pin 21 and a second electrode tab 42 spaced apart from the first electrode tab 41 along the length of the cap plate 20.
  • a temperature element 45 positioned between the first and second electrode tabs 41 and 42. Both ends 45a and 45b of the temperature element 45 may be connected to the first electrode tab 41 and the second electrode tab 42 by welding or the like, respectively.
  • the second electrode tab 42 includes a first part 42a parallel to the cap plate 20, a second part 42b extending from and bent from the first part 42a, and the first part 42a. May include a second bending groove G2.
  • the second bending groove G2 may be formed at a position where the second part 42b extends to determine the bending position of the second part 42b and to facilitate bending of the second part 42b.
  • the second part 42b may be connected to the connection end 110 formed on the circuit board 100 of the protection circuit module through welding or the like.
  • the first insulating tape 50 may be disposed between the second terminal 40 and the cap plate 20 to prevent a short circuit between the second terminal 40 and the outer surface of the bare cell B.
  • the first insulation tape 50 may include a first insulation portion 51 and a first insulation portion 51 that cover another region 20b of the cap plate 20 overlapping the second terminal 40. And a second insulator 52 and a third insulator 53 which are continuous with each other and cover some of the two sides 11 facing each other among the four sides of the can 10. .
  • the inner surface of the first insulating tape 50 facing the bare cell (B) may have an adhesive force and may be attached to the cap plate 20 and the can 10.
  • the first insulating tape 50 may be made of a thin polyethyleneterephthalate (PET) film having a thin thickness to prevent an increase in the thickness of the secondary battery 1.
  • PET polyethyleneterephthalate
  • the second insulating tape 60 may be disposed between the first insulating portion 51 and the second terminal 40 of the first insulating tape 50.
  • the second insulating tape 60 may be formed thicker than the first insulating tape 50. Therefore, the second terminal 40 and the like prevent the occurrence of the tear in the first insulating portion 51, and even if the tear occurs in the first insulating portion 51, the second terminal 40 and the cap plate ( 20) Short circuit can be prevented from occurring.
  • the second insulating tape 60 may include an adhesive material provided on at least one of a surface facing the first insulating tape 50 and a surface facing the second terminal 40.
  • the second insulating tape 60 may be a single-sided adhesive tape having an adhesive force on a surface facing the first insulating tape 50.
  • the second insulating tape 60 is a double-sided adhesive tape having an adhesive force on both a surface facing the first insulating tape 50 and a surface facing the second terminal 40. May be).
  • the fixing member 70 may cover the second terminal 40 to prevent the second terminal 40 from being separated or dropped from the bare cell B.
  • the first electrode tab 41 of the second terminal 40 may be coupled to the bare cell B while being directly welded to the electrode pin 21, but the position of the second electrode tab 42 is fixed. It may not be. Therefore, the fixing member 70 is disposed to cover the second terminal 40, so that the second terminal 40 is removed from the bare cell B or the second terminal 40 moves to move the outside of the bare cell B. Short circuits and the like can be prevented.
  • the fixing member 70 may have a shape similar to that of the first insulating tape 50.
  • the fixing member 70 is formed in a portion covering the first terminal 30 and continuously, and overlaps with the second insulating portion 52 and the third insulating portion 53 of the first insulating tape 50. It may include an end.
  • the fixing member 70 may be a plastic injection molding or an adhesive tape. For example, when the fixing member 70 is an adhesive tape, an increase in thickness of the secondary battery 1 may be minimized.
  • FIG. 5 is a perspective view schematically illustrating a modification of the first terminal of FIG. 3.
  • first terminal 30B of FIG. 5 has the same basic configuration as that of the first terminal 30 shown in FIG. 3 and described with reference to FIG. 3, only the differences will be described below.
  • the first part 31 of the first terminal 30B may include a slit 34 passing through the first part 31 between a pair of welded portions W spaced apart from each other. have.
  • the slit 34 may extend larger than the diameter of the weld portion W in a direction perpendicular to the length direction of the cap plate 20 of FIG. 2.
  • the slit 34 reduces the leakage current flowing through the first part 31 when performing electrical resistance welding between the pair of welds W.
  • the vertical width of the slit 34 passing through the center of the slit 34 may be 1 mm to 3 mm, and the horizontal width of the slit 34 may be 0.5 mm to 1 mm, but is not limited thereto.
  • the second distance D2 between the pair of welding portions W and the slits 34 may be 0.5 mm to 1 mm, respectively. If the second distance D2 is greater than 1 mm, the welding efficiency may decrease as the distance between the pair of welds W increases, and if the second distance D2 is smaller than 0.5 mm, the slit ( 34) contact with welding rod may lead to over-welding and bursting.
  • FIG. 6 is a perspective view schematically illustrating another example of the first terminal of the rechargeable battery of FIG. 1, and FIG. 7 is a cross-sectional view schematically illustrating a cross-sectional view taken along line II ′ of FIG. 6.
  • the first terminal 30C extends from the first part 31, the second part 32 extending from the first part 31 and bent relative to the first part 31, and It may include a reinforcing portion formed on the first part 31.
  • the second part 31 may extend in a direction perpendicular to the longitudinal direction of the first part 31.
  • the first part 31 may include a first region S1, which is an area connected to the second part 32, and a second region S2, which is adjacent to the first area S1, wherein the reinforcement part is formed in the first part S1. It may be continuously formed over the first region S1 and the second region S2.
  • a first bending groove G1 for determining the bending position of the second part 32 and facilitating bending of the second part 32 is provided. Can be formed.
  • the reinforcement part may be a ridge 35 in which a part of the first part 31 is convexly protruded in an upward direction, that is, in a direction opposite to the cap plate 20 of FIG. 2.
  • the first region S1 opens the first bent groove G1. It is possible to more effectively prevent the phenomenon of bending or bending in an upward direction based on the virtual line BL formed accordingly.
  • the height T2 of the ridge 35 is larger than the thickness T1 of the first part 31.
  • the height of the ridge 35 means the length measured from the bottom of the first part 31 to the highest point of the ridge 35.
  • the ridge 35 may form a part of the first part 31 by a drawing process, wherein the height T2 of the ridge 35 is equal to the thickness T1 of the first part 31.
  • tearing may occur in the ridge 35, and the height T2 of the ridge 35 may be formed to be less than twice the thickness T1 of the first part 31. .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

Selon un mode de réalisation de la présente invention, une pile rechargeable est pourvue : d'un boîtier ; d'un ensemble électrode logé dans le boîtier ; d'une plaque de couverture destinée à sceller le boîtier ; d'une première borne située sur la plaque de couverture et connectée électriquement à cette dernière, la première borne comprenant une première partie parallèle à la plaque de couverture, une seconde partie s'étendant à partir de la première partie et courbée par rapport à cette dernière, et une partie de renfort formée sur la première partie, la première partie comprenant une première région, qui est reliée à la seconde partie, et une seconde région, qui est adjacente à la première région et dans laquelle se trouve une partie soudée à la plaque de couverture, la partie de renfort étant formée sans interruption sur les première et seconde régions.
PCT/KR2017/012640 2016-11-29 2017-11-09 Pile rechargeable Ceased WO2018101634A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780073741.4A CN110024201B (zh) 2016-11-29 2017-11-09 二次电池

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0160780 2016-11-29
KR1020160160780A KR102161627B1 (ko) 2016-11-29 2016-11-29 이차 전지

Publications (1)

Publication Number Publication Date
WO2018101634A1 true WO2018101634A1 (fr) 2018-06-07

Family

ID=62241794

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2017/012640 Ceased WO2018101634A1 (fr) 2016-11-29 2017-11-09 Pile rechargeable

Country Status (3)

Country Link
KR (1) KR102161627B1 (fr)
CN (1) CN110024201B (fr)
WO (1) WO2018101634A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3930032A4 (fr) * 2019-02-21 2023-03-22 Samsung SDI Co., Ltd. Batterie secondaire et son procédé de fabrication
CN118299768A (zh) * 2024-06-03 2024-07-05 宇恒电池股份有限公司 一种方形磷酸铁锂电池

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102782635B1 (ko) * 2019-04-30 2025-03-18 현대자동차주식회사 레이저 용접 품질 향상을 위한 버스바 어셈블리 및 이를 이용한 파워모듈의 리드프레임 용접 방법
KR102770714B1 (ko) * 2019-10-31 2025-02-24 삼성에스디아이 주식회사 이차전지

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090041866A (ko) * 2007-10-25 2009-04-29 주식회사 이랜텍 배터리 팩
JP2012064560A (ja) * 2010-09-17 2012-03-29 Sb Limotive Co Ltd ２次電池
JP2014053175A (ja) * 2012-09-07 2014-03-20 Toyota Motor Corp 二次電池の集電端子及び二次電池
KR20150073738A (ko) * 2013-12-23 2015-07-01 삼성에스디아이 주식회사 이차전지 및 이차전지모듈
KR20160056691A (ko) * 2014-11-12 2016-05-20 삼성에스디아이 주식회사 이차전지

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100615214B1 (ko) * 2004-03-29 2006-08-25 삼성에스디아이 주식회사 평판 디스플레이 장치
KR100627359B1 (ko) * 2004-09-24 2006-09-21 삼성에스디아이 주식회사 이차 전지와 이에 사용되는 캡 조립체 및 밴트 플레이트
KR100670252B1 (ko) * 2004-12-17 2007-01-16 삼성에스디아이 주식회사 샤시 베이스 조립체와, 이를 제조하기 위한 방법과, 이를적용한 플라즈마 표시장치 조립체
KR100612239B1 (ko) * 2005-04-26 2006-08-11 삼성에스디아이 주식회사 이차 전지 모듈과 이차 전지 모듈을 이루는 이차 전지의격벽
CN1915713A (zh) * 2005-08-17 2007-02-21 佩格福尔姆波西米亚公司 带整体式安全气囊盖的仪表面板
KR100894626B1 (ko) * 2007-01-15 2009-04-24 삼성에스디아이 주식회사 캡 조립체 및 이를 구비한 이차 전지
JP5205805B2 (ja) * 2007-05-16 2013-06-05 ソニー株式会社 バッテリパック
KR20090099241A (ko) * 2008-03-17 2009-09-22 삼성에스디아이 주식회사 캡 조립체 및 이를 구비하는 이차 전지
KR101059756B1 (ko) * 2009-05-08 2011-08-26 주식회사 엘지화학 신규한 구조의 이차전지 팩
CN201432765Y (zh) * 2009-07-09 2010-03-31 重庆福港机械制造有限公司 摩托车手把连接板
US9203065B2 (en) * 2010-08-10 2015-12-01 Samsung Sdi Co., Ltd. Battery module
US8808893B2 (en) * 2010-11-15 2014-08-19 Lg Chem, Ltd. Battery module of excellent structural stability
KR101198026B1 (ko) * 2010-12-02 2012-11-06 주식회사 엘지화학 신규한 구조의 이차전지 팩
CN202012155U (zh) * 2011-03-21 2011-10-19 百安力钢结构应用科技有限公司 金属屋面板及金属屋面系统
JP6228127B2 (ja) * 2012-10-30 2017-11-08 三洋電機株式会社 円筒形蓄電池及び蓄電池モジュール
CN202880038U (zh) * 2012-11-15 2013-04-17 苏州征之魂专利技术服务有限公司 一种高度可调式不满箱防损填充隔层盖
CN203223639U (zh) * 2013-04-24 2013-10-02 苏州万拓机电设备有限公司 一种大跨距钢制桥架
WO2015028544A1 (fr) * 2013-08-30 2015-03-05 Plastpack Defence Aps Contenant pour matériel explosif
CN203932180U (zh) * 2014-06-28 2014-11-05 浙江天能电池(江苏)有限公司 一种极耳折弯装置
KR101483133B1 (ko) * 2014-06-30 2015-01-15 삼성에스디아이 주식회사 이차 전지
CN204175159U (zh) * 2014-07-07 2015-02-25 赵在兵 磁控百叶玻璃外控滑块

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090041866A (ko) * 2007-10-25 2009-04-29 주식회사 이랜텍 배터리 팩
JP2012064560A (ja) * 2010-09-17 2012-03-29 Sb Limotive Co Ltd ２次電池
JP2014053175A (ja) * 2012-09-07 2014-03-20 Toyota Motor Corp 二次電池の集電端子及び二次電池
KR20150073738A (ko) * 2013-12-23 2015-07-01 삼성에스디아이 주식회사 이차전지 및 이차전지모듈
KR20160056691A (ko) * 2014-11-12 2016-05-20 삼성에스디아이 주식회사 이차전지

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3930032A4 (fr) * 2019-02-21 2023-03-22 Samsung SDI Co., Ltd. Batterie secondaire et son procédé de fabrication
US12263536B2 (en) 2019-02-21 2025-04-01 Samsung Sdi Co., Ltd. Secondary battery and method for manufacturing same
CN118299768A (zh) * 2024-06-03 2024-07-05 宇恒电池股份有限公司 一种方形磷酸铁锂电池

Also Published As

Publication number Publication date
CN110024201B (zh) 2022-09-20
KR20180060831A (ko) 2018-06-07
KR102161627B1 (ko) 2020-10-05
CN110024201A (zh) 2019-07-16

Similar Documents

Publication Publication Date Title
WO2018147603A1 (fr) Batterie secondaire
WO2020204407A1 (fr) Électrode positive de batterie secondaire et batterie secondaire de type poche
WO2018074842A1 (fr) Batterie secondaire et module pour celle-ci
WO2019103344A1 (fr) Module de batterie ayant une stabilité de connexion électrique améliorée
WO2018216859A1 (fr) Ensemble électrode de structure composite et batterie secondaire au lithium-ion comportant ledit ensemble électrode
WO2018101634A1 (fr) Pile rechargeable
WO2014137017A1 (fr) Ensemble électrode à coins arrondis
WO2018199439A1 (fr) Batterie rechargeable
WO2018026105A1 (fr) Batterie secondaire
WO2018088691A1 (fr) Bloc-batterie
WO2018155853A2 (fr) Batterie secondaire ayant des languettes multiples symétriques
WO2019050181A1 (fr) Batterie secondaire
WO2018056628A1 (fr) Batterie secondaire
WO2018080080A1 (fr) Batterie secondaire
WO2018164389A1 (fr) Batterie rechargeable
WO2018016747A1 (fr) Batterie rechargeable
WO2018004159A1 (fr) Batterie rechargeable
WO2019151609A1 (fr) Batterie
WO2018021698A1 (fr) Batterie rechargeable
WO2019112149A1 (fr) Module de batteries
WO2017222199A1 (fr) Batterie secondaire
WO2018043889A1 (fr) Batterie secondaire
WO2018016766A1 (fr) Batterie rechargeable
WO2023080361A1 (fr) Batterie secondaire
WO2018216891A1 (fr) Batterie secondaire

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17875388

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17875388

Country of ref document: EP

Kind code of ref document: A1