WO2016020996A1 - 角形二次電池 - Google Patents
角形二次電池 Download PDFInfo
- Publication number
- WO2016020996A1 WO2016020996A1 PCT/JP2014/070691 JP2014070691W WO2016020996A1 WO 2016020996 A1 WO2016020996 A1 WO 2016020996A1 JP 2014070691 W JP2014070691 W JP 2014070691W WO 2016020996 A1 WO2016020996 A1 WO 2016020996A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal body
- connection terminal
- welding
- secondary battery
- battery
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 199
- 239000002184 metal Substances 0.000 claims abstract description 199
- 238000003466 welding Methods 0.000 claims description 139
- 230000002093 peripheral effect Effects 0.000 claims description 53
- 238000003756 stirring Methods 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 abstract description 7
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000005304 joining Methods 0.000 description 65
- 229910052782 aluminium Inorganic materials 0.000 description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 26
- 238000000034 method Methods 0.000 description 26
- 229910000838 Al alloy Inorganic materials 0.000 description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 20
- 229910052802 copper Inorganic materials 0.000 description 20
- 239000010949 copper Substances 0.000 description 20
- 238000004519 manufacturing process Methods 0.000 description 20
- 229910000881 Cu alloy Inorganic materials 0.000 description 18
- 239000011888 foil Substances 0.000 description 13
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000007773 negative electrode material Substances 0.000 description 7
- 239000007774 positive electrode material Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 239000008151 electrolyte solution Substances 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 238000009751 slip forming Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000003776 cleavage reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 230000007017 scission Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229920001774 Perfluoroether Polymers 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
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
-
- 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
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic 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
- H01M50/547—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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
- the present invention relates to a prismatic secondary battery, for example, a prismatic secondary battery mounted on a vehicle or the like.
- a secondary battery having a large capacity has been developed as a power source of, for example, a hybrid electric vehicle or a pure electric vehicle.
- a rectangular lithium ion secondary battery is attracting attention as a secondary battery having a high energy density.
- a prismatic lithium ion secondary battery includes, for example, a flat-shaped electricity storage element in which a positive electrode foil coated with a positive electrode active material, a negative electrode foil coated with a negative electrode active material, and a separator for insulating each of them are rolled up. Electrically connected to the positive external terminal and the negative external terminal provided on the battery lid, the storage element is accommodated in the battery can, and the opening of the battery can is welded and sealed with the battery lid. The electrolyte solution is injected from the liquid injection hole, and a liquid injection stopper is inserted into the liquid injection hole and welded and sealed by laser welding.
- the formation material of the positive electrode external terminal and the negative electrode external terminal of the secondary battery is different, for example, when the positive electrode external terminal is made of aluminum and the negative electrode external terminal is made of copper, the external of the positive electrode is obtained when a copper bus bar is used. While it is difficult to ensure the welding strength between the terminal and the bus bar, it is known that when the aluminum bus bar is used, it is difficult to ensure the welding strength between the negative external terminal and the bus bar.
- Patent Document 1 uses a clad plate of aluminum and nickel, the bus bar and the clad plate are welded of aluminum and nickel, and the positive electrode external terminal or the negative electrode external terminal and clad plate are made of aluminum and nickel or An external terminal in which a clad plate is joined by welding copper and nickel is disclosed.
- the present invention has been made in view of the above problems, and its object is to provide mechanical strength between a metal body to which a bus bar of an external terminal is welded and a connection terminal to be joined to the metal body. It is intended to provide a more reliable prismatic secondary battery by ensuring both the electrical characteristics and the electrical characteristics.
- the present application is a prismatic secondary battery in which external terminals of a positive electrode and a negative electrode are disposed on one surface of a rectangular battery container, and a flat wound group is accommodated in the battery container,
- the external terminal includes a connection terminal that penetrates through the battery container and is electrically connected to the flat wound group, and a metal body that is bonded to the connection terminal.
- the connection terminal and the metal body The joint portion has a mechanical joint portion and a metallurgical joint portion.
- both the mechanical strength and the electrical characteristics are ensured between the metal body to which the bus bar of the external terminal is welded and the connection terminal joined to the metal body, thereby providing a more reliable square shape.
- a secondary battery can be provided.
- FIG. 4B is a sectional view taken along line AA in FIG. 4B.
- FIG. 6B is a sectional view taken along line AA in FIG. 6A. The figure which shows the other Example corresponding to the AA sectional view taken on the line of FIG. 6A.
- FIG. 4 is a front view showing a part of a prismatic secondary battery and a bus bar of Embodiment 2.
- FIG. 4 is an enlarged plan view showing a main part of a battery lid assembly according to a second embodiment.
- FIG. 7B is a sectional view taken along line AA in FIG. 7B.
- FIG. 5 is a front view showing a part of a prismatic secondary battery and a bus bar of Embodiment 3.
- FIG. 6 is an enlarged plan view showing a main part of a battery lid assembly according to a third embodiment.
- FIG. 8B is a sectional view taken along line AA in FIG. 8B.
- FIG. 8B is a sectional view taken along line AA in FIG. 8B.
- FIG. 6 is a front view showing a part of a rectangular secondary battery and a bus bar according to a fourth embodiment.
- FIG. 6 is an enlarged plan view showing a main part of a battery lid assembly according to a fourth embodiment.
- FIG. 9B is a sectional view taken along line AA in FIG. 9B. The enlarged view of the B section of FIG. 9C.
- FIG. 6 is a front view showing a part of a prismatic secondary battery and a bus bar of Embodiment 5.
- FIG. 9 is an enlarged plan view showing a main part of a battery lid assembly according to a fifth embodiment.
- FIG. 10B is a sectional view taken along line AA in FIG. 10B. The enlarged view of the B section of FIG. 10C.
- FIG. 10B is a sectional view taken along line AA in FIG. 10B. The enlarged view of the B section of FIG. 10C.
- FIG. 7 is a front view showing a part of a prismatic secondary battery and a bus bar according to a sixth embodiment.
- FIG. 9 is an enlarged plan view showing a main part of a battery lid assembly according to a sixth embodiment.
- FIG. 11B is a sectional view taken along line AA in FIG. 11B. The enlarged view of the B section of FIG. 11C.
- FIG. 10 is a front view showing a part of a prismatic secondary battery and a bus bar of Embodiment 7.
- FIG. 10 is an enlarged plan view showing a main part of a battery lid assembly according to a seventh embodiment.
- FIG. 12B is a sectional view taken along line AA in FIG. 12B. The enlarged view of the B section of FIG. 12C.
- FIG. 12B is a sectional view taken along line AA in FIG. 12B. The enlarged view of the B section of FIG. 12C.
- FIG. 10 is a front view showing a part of a prismatic secondary battery and a bus bar according to an eighth embodiment.
- FIG. 9 is an enlarged plan view showing a main part of a battery lid assembly according to an eighth embodiment.
- FIG. 13B is a sectional view taken along line AA in FIG. 13B. The enlarged view of the B section of Drawing 13C.
- FIG. 10 is a front view showing a part of a prismatic secondary battery and a bus bar of Embodiment 9.
- FIG. 10 is an enlarged plan view showing a main part of a battery lid assembly according to a ninth embodiment.
- FIG. 14B is a sectional view taken along line AA in FIG. 14B. The enlarged view of the B section of FIG. 14C.
- This embodiment is a rectangular secondary battery in which positive and negative external terminals are arranged on one surface of a rectangular battery container, and a flat wound group is built in the battery container, and one of the external terminals is a battery. It has a connection terminal that penetrates the container and is electrically connected to the flat wound group, and a dissimilar metal body that is joined to the connection terminal outside the battery container. And, as a joint between the connection terminal and the metal body, it has a mechanical joint and a metallurgical joint, the mechanical joint has a screw structure, and the metallurgical joint is connected to the connection terminal by laser welding. It has a welded structure in which a metal body is lap welded.
- the rectangular secondary battery 100 ⁇ / b> A includes a battery can 101 and a battery lid 102.
- the material of the battery can 101 and the battery lid 102 is aluminum or an aluminum alloy.
- the battery lid 102 has a rectangular flat plate shape and is welded so as to close the opening of the battery can 101. That is, the battery lid 102 seals the battery can 101.
- the battery lid 102 is provided with a positive external terminal 141 and a negative external terminal 151.
- the battery cover 102 is provided with a gas discharge valve 103.
- the gas discharge valve 103 is formed by partially thinning the battery lid 102 by press working.
- the gas discharge valve 103 is formed with a cleavage groove so that a large opening is formed at the time of cleavage.
- the gas discharge valve 103 is heated when the square secondary battery 100A generates heat due to an abnormality such as overcharge, and when the pressure in the battery rises and reaches a predetermined pressure, the gas discharge valve 103 is opened and discharges the gas from the inside. To reduce the pressure in the battery. Further, the battery lid 102 is welded with a liquid injection plug 106b for sealing a liquid injection hole 106a for injecting an electrolyte into the battery.
- a plurality of prismatic secondary batteries 100A may be connected in series and used as an assembled battery.
- the bus bar 1000 can be connected to the positive external terminal 141 and the negative external terminal 151 by welding. is there.
- the positive electrode external terminal 141 is aluminum or an aluminum alloy
- the negative electrode external terminal 151 is a connection terminal 153 of copper or a copper alloy
- the metal body 152 is aluminum or an aluminum alloy.
- the bus bar 1000 is made of the same kind of aluminum or aluminum alloy as the positive electrode external terminal 141. The present application relates to the structure of this terminal.
- the battery can 101 accommodates a flat wound group 170.
- the battery can 101 has a pair of wide surfaces 101a, a pair of narrow surfaces 101b, and a bottom surface 101c, and is formed in a rectangular box shape with an upper surface opened.
- the flat wound group 170 is housed in the battery can 101 while being covered with the insulating case 108.
- the material of the insulating case 108 is an insulating resin such as polypropylene. Thereby, the inner surface of the battery can 101 and the flat wound group 170 are electrically insulated.
- the positive external terminal 141 is electrically connected to the positive electrode 174 of the flat wound group 170 via the positive current collector 180, and the negative external terminal 151 is connected to the negative electrode of the flat wound group 170 via the negative current collector 190.
- 175 is electrically connected to the external load via the positive external terminal 141 and the negative external terminal 151, or the external generated power is flattened via the positive external terminal 141 and the negative external terminal 151. It is supplied to the winding group 170 and charged.
- the battery lid assembly 107 includes a battery lid 102, a positive electrode external terminal 141 and a negative electrode external terminal 151 attached to each of a pair of through holes 102h provided in the battery lid 102, a positive electrode current collector 180, and a negative electrode current collector.
- the body 190 includes a pair of gaskets 130 and a pair of insulating members 160.
- the material of the metal body 152 of the positive electrode external terminal 141, the positive electrode current collector 180, and the negative electrode external terminal 151 is aluminum or an aluminum alloy.
- the positive external terminal 141 is electrically connected to the positive current collector 180.
- the material of the connection terminal 153 of the negative electrode external terminal 151 and the negative electrode current collector 190 is copper or a copper alloy.
- the negative external terminal 151 is electrically connected to the negative current collector 190.
- the material of the insulating member 160 and the gasket 130 is an insulating resin such as polybutylene terephthalate, polyphenylene sulfide, perfluoroalkoxy fluororesin.
- the battery lid 102 is provided with a liquid injection hole 106 a for injecting an electrolytic solution into the battery can 101.
- the liquid injection hole 106a is sealed by welding after the electrolyte is injected, after the sealing material 106c is inserted into the liquid injection hole 106a and the liquid injection plug 106b is press-fitted into the sealing material 106c.
- the electrolytic solution for example, a non-aqueous electrolytic solution in which a lithium salt such as lithium hexafluorophosphate (LiPF 6 ) is dissolved in a carbonate-based organic solvent such as ethylene carbonate can be used.
- FIG. 3 is a perspective view showing the flat wound group 170.
- the flat wound group 170 that is a power storage element has a laminated structure in which a long positive electrode 174 and a negative electrode 175 are wound around a winding axis W in a flat shape with a separator 173 interposed therebetween. It is said.
- the positive electrode 174 includes a positive electrode foil 171 and a positive electrode active material mixture layer 176 formed by coating a positive electrode active material mixture in which a binder (binder) is mixed with a positive electrode active material on both surfaces of the positive electrode foil 171.
- the negative electrode 175 includes a negative electrode foil 172 and a negative electrode active material mixture layer 177 formed by coating a negative electrode active material mixture in which a binder (binder) is mixed with a negative electrode active material on both surfaces of the negative electrode foil 172.
- Have Charging / discharging is performed between the positive electrode active material and the negative electrode active material.
- the positive foil 171 is an aluminum alloy foil having a thickness of about 20 to 30 ⁇ m
- the negative foil 172 is a copper alloy foil having a thickness of about 15 to 20 ⁇ m.
- the material of the separator 173 is a porous polyethylene resin.
- the positive electrode active material is a lithium-containing transition metal double oxide such as lithium manganate
- the negative electrode active material is a carbon material such as graphite capable of reversibly occluding and releasing lithium ions.
- One end of the flat wound group 170 in the width direction is an uncoated part (positive electrode foil 171 of the positive electrode foil 171) where the positive electrode active material mixture layer 176 is not formed.
- the exposed portion is a portion where the negative electrode active material mixture layer 177 is not formed (the exposed portion of the negative foil 172).
- the laminated body of the positive electrode side uncoated portion and the laminated body of the negative electrode side uncoated portion are ultrasonically bonded to the positive electrode current collector 180 and the negative electrode current collector 190 (see FIG. 2) of the battery lid assembly 107 described later, respectively.
- the entire flat wound group 170 is covered by the insulating case 108 and accommodated in the battery can 101, and the battery can 101 and the battery lid 102 are sealed by laser welding.
- FIG. 4A is a front view showing a part of the prismatic secondary battery and bus bar of Embodiment 1
- FIG. 4B is an enlarged plan view showing the main part of the battery lid assembly of Embodiment 1
- FIG. 4B is a cross-sectional view taken along line AA of 4B.
- the battery lid 102 is provided with a positive external terminal 141 and a negative external terminal 151 via a gasket 130.
- the bus bar 1000 is welded to the positive external terminal 141 and the negative external terminal 151.
- the positive electrode external terminal 141 and the metal body 152 of the negative electrode external terminal 151 are made of aluminum or an aluminum alloy, and the connection terminal 153 of the negative electrode external terminal 151 is made of copper or a copper alloy.
- Joining with the bus bar 1000 is welding of aluminum or aluminum alloy, and can be bus bar welding with no problem in strength.
- the negative external terminal 151 joins the metal body 152 and the connection terminal 153 by both the mechanical joining method and the metallurgical joining method, has a screw structure as the mechanical joining portion, and laser welding as the metallurgical joining portion.
- the metal body 152 and the connection terminal 153 are welded to each other. Thereby, the mechanical strength between the metal body 152 and the connection terminal 153 can be secured by mechanical joining, and the electrical characteristics can be secured by metallurgical joining. Therefore, the reliability of the square secondary battery 100A can be improved.
- the positive electrode external terminal 141 is composed of a metal body and a connection terminal, and the metal body of the positive electrode external terminal 141 and the negative electrode external terminal 151 are connected to each other.
- the metal body of the positive external terminal 141 and the bus bar 1000 are welded between copper or a copper alloy, and there is no problem in strength. It can be bus bar welding.
- the positive external terminal 141 can improve the reliability of the rectangular secondary battery 100A by joining the metal body and the connection terminal by both the mechanical joining method and the metallurgical joining method.
- FIG. 5 shows an assembling method of the negative electrode external terminal and battery cover assembly negative electrode side when the bus bar is made of aluminum or aluminum alloy.
- the negative electrode external terminal 151 includes, for example, a metal body 152 made of aluminum or aluminum alloy and a connection terminal 153 made of copper or copper alloy.
- the metal body 152 has a flat block shape having a substantially rectangular shape in plan view, and is disposed at a position facing the battery cover 102 with the gasket 130 therebetween, and a position spaced from the cover facing surface 152b.
- a screw hole 152d is provided from a substantially central position of the lid facing surface 152b toward the welding surface 152a.
- the screw hole 152d has a depth that leaves a predetermined thickness between the screw hole 152d and the welding surface 152a.
- the connection terminal 153 has a round bar shape.
- the base end portion 153a is provided with a male screw that is screwed into the screw hole 152d, and the distal end portion 153b is provided with a caulking recess. .
- the negative electrode external terminal 151 is formed by screwing the base end portion 153a of the connection terminal 153 into the screw hole 152d of the metal body 152 so that the connection terminal 153 and the metal body 152 are mechanically connected. Combined. Then, as shown in FIG. 5B, the welding surface 152a of the metal body 152 is irradiated with a laser beam LB for laser welding, and penetrates the bottom surface of the screw hole 152d from the welding surface 152a of the metal body 152. By performing lap welding that melts to the base end portion 153a, the connection terminal 153 and the metal body 152 are metallurgically joined.
- a welded portion 151a that is metal-bonded is formed between the base end portion 153a of the connection terminal 153 and the weld surface 152a of the metal body 152, and the metal body 152 and the connection terminal 153 are electrically connected. Connected.
- the gasket 130, the battery lid 102, the insulating member 160, and the negative electrode current collector 190 are overlapped, and the connection terminal 153 of the negative electrode external terminal 151 is inserted into a through-hole penetrating these. .
- the gasket 130, the battery lid 102, the insulating member 160, and the negative electrode current collector 190 are integrated by bending the caulking end of the connection terminal 153 so as to spread outward in the radial direction, and the battery lid assembly 107.
- the negative electrode side is assembled.
- the bus bar is made of aluminum or an aluminum alloy
- the metal body of the positive external terminal 141 is made of copper or a copper alloy
- the connection terminal is made of aluminum or an aluminum alloy.
- the welded portion 151 a formed by the above-described method has the metal body of the negative electrode external terminal 151 in order to bring the bus bar 1000 into contact with the welding surface 152 a of the negative electrode external terminal 151 and perform, for example, laser welding. If the bus bar welding is performed together with the welded portion 151a between the connection terminal 152 and the connection terminal 153, the strength of the bus bar welded portion 1000a may be reduced. Therefore, when welding the bus bar 1000, it is necessary to avoid the welded portion 151a.
- the bus bar welded part 1000a is formed in an elliptical shape so as to surround the welded part 151a.
- the problem can be solved by welding and sealing after assembling in a nitrogen atmosphere and enclosing a filler such as nitrogen gas in the gap. Alternatively, the assembly may be performed in a vacuum and then welded and sealed.
- laser welding is used for welding the metal body 152 and the connection terminal 153, but the present invention is not limited to this, and other metallurgical joining methods such as friction stir welding (FSW) and electronic Beam welding, resistance welding, pressure welding, arc welding, fusion welding, or the like may be used.
- FSW friction stir welding
- electronic Beam welding resistance welding
- pressure welding pressure welding
- arc welding fusion welding
- the negative electrode external terminal 151 joins the metal body 152 and the connection terminal 153 by both the mechanical joining method and the metallurgical joining method, has a screw structure as a mechanical joining portion, and is metallurgical. It has a welded structure in which the metal body 152 and the connection terminal 153 are overlap welded by laser welding as a joint. Thereby, the mechanical strength between the metal body 152 and the connection terminal 153 can be secured by mechanical joining, and the electrical characteristics can be secured by metallurgical joining. Therefore, the reliability of the square secondary battery 100A can be improved.
- the mechanical joint since the mechanical joint has a screw structure, it is possible to obtain a mechanical strength that is significantly higher than that of the conventional art.
- Embodiment 2 Next, Embodiment 2 of the present invention will be described below with reference to FIGS. 7A to 7C.
- FIG. 7A is a front view showing a part of the prismatic secondary battery of Embodiment 2 and a bus bar
- FIG. 7B is an enlarged plan view showing the main part of the battery lid assembly of Embodiment 2
- FIG. 7B is a cross-sectional view taken along line AA of 7B. It should be noted that the description of the components having the same functions as those already described with reference to FIGS. 1 to 6 is omitted.
- the characteristic of this embodiment is that the mechanical joint has a press-fit structure instead of the screw structure of the first embodiment.
- This embodiment is a rectangular secondary battery in which positive and negative external terminals are arranged on one surface of a rectangular battery container, and a flat wound group is built in the battery container, and one of the external terminals is a battery. It has a connection terminal that penetrates the container and is electrically connected to the flat wound group, and a dissimilar metal body that is joined to the connection terminal outside the battery container. And as a joint part of a connection terminal and a metal body, it has a mechanical joint part and a metallurgical joint part, a mechanical joint part has a press-fit structure, and a metallurgical joint part is a connection terminal by laser welding. And a metal body are welded together.
- the negative external terminal 251 of the prismatic secondary battery 200A has a metal body 252 made of aluminum or aluminum alloy and a connection terminal 253 made of copper or copper alloy.
- the metal body 252 has a flat block shape having a substantially rectangular shape in plan view, and is disposed parallel to the battery cover 102 and the cover facing surface 252b facing the battery cover 102 with the gasket 130 therebetween, and the bus bar 1000.
- a round hole 252d having a predetermined depth toward the welding surface 252a is provided at a substantially central position of the lid facing surface 252b.
- the connection terminal 253 has a round bar shape, and the base end 253a is press-fitted into the round hole 252d.
- connection terminal 253 and the metal body 252 are mechanically joined by press-fitting the base end 253 a of the connection terminal 253 into the round hole 252 d of the metal body 252.
- the welding surface 252a of the metal body 252 is irradiated with laser welding laser, melted from the welding surface 252a of the metal body 252 through the bottom surface of the round hole 252d to the base end portion 253a of the connection terminal 253, and lap-welded.
- the connection terminal 253 and the metal body 252 are metallurgically joined.
- a welded portion 251a that is metal-bonded is formed between the base end portion 253a of the connection terminal 253 and the welded surface 252a of the metal body 252, and the metal body 252 and the connection terminal 253 are electrically connected. It is connected.
- the negative electrode external terminal 251 joins the metal body 252 and the connection terminal 253 by both the mechanical joining method and the metallurgical joining method, and has a press-fit structure as a mechanical joining portion. It has a welded structure in which the metal body 252 and the connection terminal 253 are overlap welded by laser welding as a joint. Thereby, the mechanical strength between the metal body 252 and the connection terminal 253 can be ensured by mechanical joining, and the electrical characteristics can be secured by metallurgical joining. Therefore, the reliability of the prismatic secondary battery 200A can be improved.
- a male screw is formed at the base end portion 153a of the connection terminal 253, and a screw hole is formed in the metal body 152.
- the step of forming 152d can be omitted. Therefore, the structure is simple, it can be manufactured easily, and the manufacturing cost can be kept low.
- Embodiment 3 Next, Embodiment 3 of the present invention will be described below with reference to FIGS. 8A to 8C.
- FIG. 8A is a front view showing a part of the prismatic secondary battery and bus bar of Embodiment 3
- FIG. 8B is an enlarged plan view showing the main part of the battery lid assembly of Embodiment 3
- FIG. 8B is a cross-sectional view taken along line AA of 8B. It should be noted that the description of the components having the same functions as those already described with reference to FIGS. 1 to 6 is omitted.
- This embodiment is a rectangular secondary battery in which positive and negative external terminals are arranged on one surface of a rectangular battery container, and a flat wound group is built in the battery container, and one of the external terminals is a battery. It has a connection terminal that penetrates the container and is electrically connected to the flat wound group, and a dissimilar metal body that is joined to the connection terminal outside the battery container. And as a joint part of a connection terminal and a metal body, it has a mechanical joint part and a metallurgical joint part, a mechanical joint part has a press-fit structure, and a metallurgical joint part is a connection terminal by laser welding. And a welded structure in which a metal body is welded at a plurality of positions.
- the negative electrode external terminal 351 of the prismatic secondary battery 300A includes a metal body 352 made of aluminum or aluminum alloy and a connection terminal 353 made of copper or copper alloy.
- the metal body 352 has a flat block shape having a substantially rectangular shape in plan view, and is disposed parallel to the battery cover 102 and the cover facing surface 352b that faces the battery cover 102 with the gasket 130 interposed therebetween.
- a round hole 352d having a predetermined depth toward the welding surface 352a is provided at a substantially central position of the lid facing surface 352b.
- the connection terminal 353 has a round bar shape, and the base end portion 353a is press-fitted into the round hole 352d.
- connection terminal 353 and the metal body 352 are mechanically joined by press-fitting the base end portion 353a of the connection terminal 353 into the round hole 352d of the metal body 352.
- the welding surface 352a of the metal body 352 is irradiated with laser welding laser, and is melted to the base end portion 353a of the connection terminal 353 through the bottom surface of the round hole 352d from the welding surface 352a of the metal body 352 and is lap welded.
- the connection terminal 353 and the metal body 352 are joined metallurgically. In this embodiment, three places are overlap-welded.
- a plurality of welded portions 351a that are metal-bonded are formed between the base end portion of the connection terminal 353 and the weld surface 352a of the metal body 352, and the metal body 352 and the connection terminal 353 are electrically connected. It is connected to the.
- the negative electrode external terminal 351 joins the metal body 352 and the connection terminal 353 by both the mechanical joining method and the metallurgical joining method, has a press-fit structure as a mechanical joining portion, and is metallurgical. It has a welded structure in which a metal body 352 and connection terminals 353 are overlap-welded at a plurality of locations by laser welding as a joint. Thereby, the mechanical strength between the metal body 352 and the connection terminal 353 can be secured by mechanical joining, and the electrical characteristics can be secured by metallurgical joining. Therefore, the reliability of the prismatic secondary battery 200A can be improved.
- the cross-sectional area of the metallurgical joint can be increased by that much, and the electrical resistance between the metal body 352 and the connection terminal 353 can be further increased. Can be reduced.
- Embodiment 4 Next, Embodiment 4 of the present invention will be described below with reference to FIGS. 9A to 9D.
- FIG. 9A is a front view showing a part of the prismatic secondary battery and bus bar of Embodiment 4
- FIG. 9B is an enlarged plan view showing the main part of the battery lid assembly of Embodiment 4
- FIG. 9B is a cross-sectional view taken along line AA in FIG. 9B
- FIG. 9D is an enlarged view of a portion B in FIG. 9C.
- the metallurgical joint has a welded structure by fillet welding instead of the lap welding of the second and third embodiments.
- This embodiment is a rectangular secondary battery in which positive and negative external terminals are arranged on one surface of a rectangular battery container, and a flat wound group is built in the battery container, and one of the external terminals is a battery. It has a connection terminal that penetrates the container and is electrically connected to the flat wound group, and a dissimilar metal body that is joined to the connection terminal outside the battery container.
- connection terminal and a metal body As a joint part of a connection terminal and a metal body, it has a mechanical joint part and a metallurgical joint part, a mechanical joint part has a press-fit structure, and a metallurgical joint part is a connection terminal by laser welding. And a metal body are welded.
- the negative external terminal 451 of the prismatic secondary battery 400A has a metal body 452 made of aluminum or aluminum alloy and a connection terminal 453 made of copper or copper alloy.
- the metal body 452 has a flat block shape having a substantially rectangular shape in plan view, and is disposed parallel to the battery lid 102 and a lid facing surface 452b that faces the battery lid 102 with the gasket 130 therebetween, and the bus bar 1000. And a side surface 452c extending from the peripheral edge of the weld surface 452a to the peripheral edge of the lid facing surface 452b.
- a round hole 452d having a predetermined depth toward the welding surface 452a is provided at a substantially central position of the lid facing surface 452b.
- the connection terminal 453 has a round bar shape, and the base end portion 453a is press-fitted into the round hole 452d.
- the weld surface 452a is provided with a through hole 452e that penetrates to the bottom surface of the round hole 452d.
- the opening on the bottom surface side of the round hole 452d is completely closed by the end surface of the base end portion 453a of the connection terminal 453, and when the negative electrode external terminal 451 is viewed in plan as shown in FIG. 9B.
- the end face of the base end portion 453a of the connection terminal 453 is exposed in the through hole 452e.
- the inner diameter of the through-hole 452e is smaller than the outer diameter of the base end portion 453a of the connection terminal 453, and the end surface peripheral region of the end surface of the base end portion 453a abuts against the bottom surface of the round hole 452d, and the end surface center region Is exposed to the outside through the through hole 452e.
- connection terminal 453 and the metal body 452 are mechanically joined by press-fitting the base end portion 453a of the connection terminal 453 into the round hole 452d of the metal body 452. Then, as shown in FIG. 9D, laser welding LB is irradiated to the boundary portion between the end surface of the base end portion 453a of the connection terminal 453 and the inner peripheral surface of the through hole 452e of the metal body 452 to fill the fillet. By welding, the connection terminal 453 and the metal body 452 are metallurgically joined.
- a welded portion 451a that is metal-bonded is formed at the boundary portion between the end surface of the base end portion 453a of the connection terminal 453 and the inner peripheral surface of the through hole 452e of the metal body 452, and the metal The body 452 and the connection terminal 453 are electrically connected.
- the welded portion 451a is formed continuously over the entire circumference along the inner peripheral surface of the through hole 452e.
- the negative electrode external terminal 451 joins the metal body 452 and the connection terminal 453 by both the mechanical joining method and the metallurgical joining method, has a press-fit structure as a mechanical joining portion, and is metallurgical. It has a welded structure in which the metal body 452 and the connection terminal 453 are fillet welded by laser welding as a joint. Thereby, the mechanical strength between the metal body 452 and the connection terminal 453 can be secured by mechanical joining, and the electrical characteristics can be secured by metallurgical joining. Therefore, the reliability of the square secondary battery 400A can be improved.
- the present embodiment has a welded structure in which the metal body 452 and the connection terminal 453 are welded by fillet welding, so that welding is performed with less welding energy compared to the lap welding of the first to third embodiments described above.
- the metal body 452 and the connection terminal 453 are welded by fillet welding, so that welding is performed with less welding energy compared to the lap welding of the first to third embodiments described above.
- the state in which the metal body 452 and the connection terminal 453 are welded can be visually confirmed, it is possible to easily perform a welding check and provide a high-quality product.
- Embodiment 5 Next, Embodiment 5 of the present invention will be described below with reference to FIGS. 10 to 10D.
- FIG. 10A is a front view showing a part of the prismatic secondary battery and bus bar of Embodiment 5
- FIG. 10B is an enlarged plan view showing the main part of the battery lid assembly of Embodiment 5
- FIG. 10B is a cross-sectional view taken along the line AA
- FIG. 10D is an enlarged view of a portion B in FIG. 10C. It should be noted that the description of the components having the same functions as those already described with reference to FIGS. 1 to 6 is omitted.
- the metallurgical joint has a welded structure by butt welding.
- This embodiment is a rectangular secondary battery in which positive and negative external terminals are arranged on one surface of a rectangular battery container, and a flat wound group is built in the battery container, and one of the external terminals is a battery. It has a connection terminal that penetrates the container and is electrically connected to the flat wound group, and a dissimilar metal body that is joined to the connection terminal outside the battery container. And as a joint part of a connection terminal and a metal body, it has a mechanical joint part and a metallurgical joint part, a mechanical joint part has a press-fit structure, and a metallurgical joint part is a connection terminal by laser welding. And a metal body.
- the negative external terminal 551 of the prismatic secondary battery 500A has a metal body 552 made of aluminum or aluminum alloy and a connection terminal 553 made of copper or copper alloy.
- the metal body 552 has a flat block shape having a substantially rectangular shape in plan view, and is disposed parallel to the battery cover 102 and a cover-facing surface 552b that faces the battery cover 102 with the gasket 130 interposed therebetween.
- a round hole 552d having a predetermined depth toward the welding surface 552a is provided at a substantially central position of the lid facing surface 552b.
- the connection terminal 553 has a round bar shape, and the base end portion 553a is press-fitted into the round hole 552d.
- the through-hole 552e which penetrates to the bottom face of the round hole 552d is provided in the welding surface 552a.
- the base end portion 553a of the connection terminal 553 is provided with a columnar portion 553c that is fitted into the through hole 552e.
- the outer peripheral surface of the cylindrical portion 553c faces and abuts the inner peripheral surface of the through hole 552e, and the end surface of the cylindrical portion 553c is flush with the welding surface 552a.
- the negative electrode external terminal 551 is mechanically joined between the connection terminal 553 and the metal body 552 by press-fitting the base end portion 553a of the connection terminal 553 into the round hole 552d of the metal body 552. Then, as shown in FIG. 10D, a laser welding laser LB is irradiated to the boundary portion between the outer peripheral surface of the cylindrical portion 553c of the connection terminal 553 and the inner peripheral surface of the through hole 552e of the metal body 552, and butt welding is performed. Thus, the connection terminal 553 and the metal body 552 are metallurgically joined.
- a metal-bonded welded portion 551a is formed at the boundary portion between the outer peripheral surface of the cylindrical portion 553c of the connection terminal 553 and the inner peripheral surface of the through hole 552e of the metal body 552, and the metal The body 552 and the connection terminal 553 are electrically connected.
- the welded portion 551a is continuously formed over the entire circumference along the boundary portion between the outer peripheral surface of the columnar portion 553c of the connection terminal 553 and the inner peripheral surface of the through hole 552e of the metal body 552. ing.
- the negative electrode external terminal 551 joins the metal body 552 and the connection terminal 553 by both the mechanical joining method and the metallurgical joining method, and has a press-fit structure as a mechanical joining portion. It has a welded structure in which the metal body 552 and the connection terminal 553 are butt welded by laser welding as a joint. Thereby, the mechanical strength between the metal body 552 and the connection terminal 553 can be secured by mechanical joining, and the electrical characteristics can be secured by metallurgical joining. Therefore, the reliability of the square secondary battery 500A can be improved.
- the present embodiment has a welding structure in which the metal body 552 and the connection terminal 553 are butt-welded, so that welding can be performed with less welding energy as compared to the lap welding in the first to third embodiments.
- the laser beam LB for laser welding can be applied in a direction perpendicular to the welding surface 552a, the welding operation is easier and easier to manufacture than in the fourth embodiment.
- the state in which the metal body 552 and the connection terminal 553 are welded can be visually confirmed, it is possible to easily perform a welding check and provide a high-quality product.
- Embodiment 6 Next, Embodiment 6 of the present invention will be described below with reference to FIGS. 11A to 11D.
- FIG. 11A is a front view showing a part of the prismatic secondary battery and bus bar of Embodiment 6,
- FIG. 11B is an enlarged plan view showing the main part of the battery lid assembly of Embodiment 6, and
- FIG. 11B is a cross-sectional view taken along line AA in FIG. 11B, and
- FIG. 11D is an enlarged view of a portion B in FIG. 11C. It should be noted that the description of the components having the same functions as those already described with reference to FIGS. 1 to 6 is omitted.
- the metallurgical joint is provided on the opposite surface side of the metal body and has a welded structure by fillet welding.
- This embodiment is a rectangular secondary battery in which positive and negative external terminals are arranged on one surface of a rectangular battery container, and a flat wound group is built in the battery container, and one of the external terminals is a battery. It has a connection terminal that penetrates the container and is electrically connected to the flat wound group, and a dissimilar metal body that is joined to the connection terminal outside the battery container.
- connection terminal and a metal body As a joint part of a connection terminal and a metal body, it has a mechanical joint part and a metallurgical joint part, a mechanical joint part has a press-fit structure, and a metallurgical joint part is a connection terminal by laser welding. And a metal body are welded.
- the negative external terminal 651 of the prismatic secondary battery 600A has a metal body 652 made of aluminum or aluminum alloy and a connection terminal 653 made of copper or copper alloy.
- the metal body 652 has a flat block shape having a substantially rectangular shape in plan view, and is disposed parallel to the battery cover 102 and the cover facing surface 652b that faces the battery cover 102 with the gasket 130 interposed therebetween.
- a round hole 652d having a predetermined depth toward the welding surface 652a is provided at a substantially central position of the lid facing surface 652b.
- the connection terminal 653 has a round bar shape, and the base end portion 653a is press-fitted into the round hole 652d.
- connection terminal 653 and the metal body 652 are mechanically joined by press-fitting the base end portion 653a of the connection terminal 653 into the circular hole 652d of the metal body 652. Then, as shown in FIG. 11D, fillet welding is performed by irradiating the laser LB of the laser welding to the boundary portion between the outer peripheral surface of the base end portion 653 a of the connection terminal 653 and the facing surface 652 b of the metal body 652.
- the connection terminal 653 and the metal body 652 are metallurgically joined.
- a welded portion 651a that is metal-bonded is formed at the boundary portion between the outer peripheral surface of the base end portion 653a of the connection terminal 653 and the opposing surface 652b of the metal body 652, and the metal body 652
- the connection terminal 653 is electrically connected.
- the welded portion 651a is formed continuously over the entire circumference along the opening edge of the round hole 652d of the metal body 652.
- the negative electrode external terminal 651 joins the metal body 652 and the connection terminal 653 by both the mechanical joining method and the metallurgical joining method, and has a press-fit structure as a mechanical joining portion. It has a welded structure in which the metal body 652 and the connection terminal 653 are fillet welded by laser welding as a joint. Thereby, the mechanical strength between the metal body 652 and the connection terminal 653 can be secured by mechanical joining, and the electrical characteristics can be secured by metallurgical joining. Therefore, the reliability of the prismatic secondary battery 600A can be improved.
- the metal body 652 and the connection terminal 653 have a welded structure that is fillet welded, it is possible to perform welding with less welding energy as compared to the lap welding in the first to third embodiments described above. Can be manufactured with a small-scale production facility, and the manufacturing cost can be kept low. Moreover, since the state in which the metal body 652 and the connection terminal 653 are welded can be visually confirmed, it is possible to easily perform a check and inspection of welding and provide a high-quality product.
- the weld surface 652a of the metal body 652 can be used over the entire surface, and can be joined to the bus bar 1000. A larger area can be secured, and the electrical resistance with the bus bar 1000 can be reduced.
- Embodiment 7 Next, Embodiment 7 of the present invention will be described below with reference to FIGS. 12A to 12D.
- FIG. 12A is a front view showing a part of the prismatic secondary battery and the bus bar of Embodiment 7
- FIG. 12B is an enlarged plan view showing the main part of the battery lid assembly of Embodiment 7, and
- FIG. 12B is a cross-sectional view taken along the line AA of FIG. 12B
- FIG. 12D is an enlarged view of a portion B of FIG. 12C.
- the metallurgical joint is provided on the opposite surface side of the metal body and has a welded structure by butt welding.
- This embodiment is a rectangular secondary battery in which positive and negative external terminals are arranged on one surface of a rectangular battery container, and a flat wound group is built in the battery container, and one of the external terminals is a battery. It has a connection terminal that penetrates the container and is electrically connected to the flat wound group, and a dissimilar metal body that is joined to the connection terminal outside the battery container.
- connection terminal and a metal body As a joint part of a connection terminal and a metal body, it has a mechanical joint part and a metallurgical joint part, a mechanical joint part has a press-fit structure, and a metallurgical joint part is a connection terminal by laser welding. And a metal body.
- the negative external terminal 751 of the prismatic secondary battery 700A has a metal body 752 of aluminum or aluminum alloy and a connection terminal 753 of copper or copper alloy.
- the metal body 752 has a flat block shape having a substantially rectangular shape in plan view, and is disposed parallel to the battery cover 102 and a cover facing surface 752b that faces the battery cover 102 with the gasket 130 interposed therebetween.
- a round hole 752d having a predetermined depth toward the welding surface 752a is provided at a substantially central position of the lid facing surface 752b.
- the connection terminal 753 has a round bar shape, and the base end portion 753a is press-fitted into the round hole 752d.
- the round hole 752d has a stepped hole shape having a large-diameter portion 752e that is expanded in diameter on the facing surface 752b side.
- the connection terminal 753 is provided with a flange portion 753c fitted into the large diameter portion 752e.
- the outer peripheral surface of the flange portion 753c faces and abuts against the inner peripheral surface of the large-diameter portion 752e of the round hole 752d, and the end surface of the flange portion 753c is flush with the opposing surface 752b of the metal body 752.
- connection terminal 753 and the metal body 752 are mechanically joined by press-fitting the base end portion 753a of the connection terminal 753 into the circular hole 752d of the metal body 752. Then, as shown in FIG. 12D, a laser welding laser LB is irradiated to the boundary portion between the outer peripheral surface of the flange portion 753c of the connection terminal 753 and the inner peripheral surface of the large-diameter portion 752e of the metal body 752 to make a match. By welding, the connection terminal 753 and the metal body 752 are metallurgically joined.
- a welded portion 751a that is metal-bonded is formed at the boundary portion between the outer peripheral surface of the flange portion 753c of the connection terminal 753 and the inner peripheral surface of the large-diameter portion 752e of the metal body 752.
- the metal body 752 and the connection terminal 753 are electrically connected.
- the weld 751a is continuously formed over the entire circumference along a boundary portion between the outer peripheral surface of the flange portion 753c of the connection terminal 753 and the inner peripheral surface of the large-diameter portion 752e of the metal body 752.
- the negative electrode external terminal 751 joins the metal body 752 and the connection terminal 753 by both the mechanical joining method and the metallurgical joining method, and has a press-fit structure as a mechanical joining portion. It has a welded structure in which the metal body 752 and the connection terminal 753 are butt welded by laser welding as a joint. Thereby, the mechanical strength between the metal body 752 and the connection terminal 753 can be ensured by mechanical joining, and the electrical characteristics can be secured by metallurgical joining. Therefore, the reliability of the prismatic secondary battery 700A can be improved.
- this embodiment has a welded structure in which the metal body 752 and the connection terminal 753 are butt welded, welding can be performed with less welding energy compared to the lap welding in the first to third embodiments described above. It can be manufactured with a small-scale production facility, and the manufacturing cost can be kept low.
- the laser beam LB for laser welding can be applied in a direction perpendicular to the facing surface 752b, the welding operation is easier than that of the above-described sixth embodiment, and the manufacturing can be easily performed.
- the state in which the metal body 752 and the connection terminal 753 are welded can be visually confirmed, it is possible to easily perform a welding check and provide a high-quality product.
- the weld surface 752a of the metal body 752 can be used over the entire surface and joined to the bus bar 1000. A larger area can be secured, and the electrical resistance with the bus bar 1000 can be reduced.
- FIG. 13A is a front view showing a part of the prismatic secondary battery and bus bar of Embodiment 8
- FIG. 13B is an enlarged plan view showing the main part of the battery lid assembly of Embodiment 8
- FIG. 13C is a diagram. 13B is a cross-sectional view taken along line AA of FIG. 13B
- FIG. 13D is an enlarged view of a portion B of FIG. 13C. It should be noted that the description of the components having the same functions as those already described with reference to FIGS. 1 to 6 is omitted.
- the metallurgical joint is provided on the side surface of the metal body and has a welded structure by butt welding.
- This embodiment is a rectangular secondary battery in which positive and negative external terminals are arranged on one surface of a rectangular battery container, and a flat wound group is built in the battery container, and one of the external terminals is a battery. It has a connection terminal that penetrates the container and is electrically connected to the flat wound group, and a dissimilar metal body that is joined to the connection terminal outside the battery container.
- connection terminal and a metal body As a joint part of a connection terminal and a metal body, it has a mechanical joint part and a metallurgical joint part, a mechanical joint part has a press-fit structure, and a metallurgical joint part is a connection terminal by laser welding. And a metal body.
- the negative external terminal 851 of the prismatic secondary battery 800A has a metal body 852 made of aluminum or aluminum alloy and a connection terminal 853 made of copper or copper alloy.
- the metal body 852 has a flat plate portion 852A that is disposed on the connection terminal 853 and is substantially rectangular in plan view and has a predetermined plate thickness.
- the flat plate portion 852A is arranged in parallel with the battery lid 102 and welded to the bus bar 1000, a facing surface 852a facing the connection terminal 853, a peripheral edge of the welding surface 852a, and a peripheral end of the facing surface 852b. It has a side surface 852c extending between the edges and a shaft portion 852d protruding from the facing surface 852b of the flat plate portion 852A.
- the shaft portion 852d has a constant diameter and protrudes from a substantially central position of the facing surface 852b by a predetermined length, and is press-fitted into the recess 853d of the connection terminal 853.
- the connection terminal 853 has a block-shaped base end portion 853A having a substantially rectangular shape in plan view and a tip end portion 853B protruding from the base end portion 853A.
- the base end portion 853A is in contact with the facing surface 852b of the flat plate portion 852A in contact with the contact surface 853a, the cover facing surface 853b facing the battery cover 102, and the peripheral edge of the contact surface 853a.
- a side surface 853c extending to the peripheral edge of the surface 853b.
- the distal end portion 853B protrudes from a substantially central position of the lid facing surface 853b and penetrates the battery lid 102, and the distal end is caulked to fix the connection terminal 853 to the battery lid 102.
- the base end portion 853A of the connection terminal 853 is provided with a recess 853d having a predetermined depth at a substantially central position of the contact surface 853a, and the shaft portion 852d of the metal body 852 is press-
- the metal body 852 and the connection terminal 853 have the same size in plan view, and the side surface 852c of the metal body 852 and the side surface 853c of the base end portion 853A of the connection terminal 853 are flush with each other in the overlapping direction. Yes.
- the negative electrode external terminal 851 is mechanically joined to the connection terminal 853 and the metal body 852 by press-fitting the shaft portion 852d of the metal body 852 into the recess 853d of the connection terminal 853. Then, as shown in FIG. 13D, the boundary portion between the side surface 853c of the connection terminal 853 and the side surface 852c of the metal body 852 is butt-welded by irradiating laser welding laser LB, so that the connection terminal 853 and the metal The body 852 is metallurgically joined.
- a metal-bonded welded portion 851a is formed at the boundary portion between the side surface 853c of the connection terminal 853 and the side surface 852c of the metal body 852, and the metal body 852 and the connection terminal 853 are electrically connected. Connected.
- the welded portion 851a is continuously formed over the entire circumference along the boundary portion between the side surface 853c of the connection terminal 853 and the side surface 852c of the metal body 852.
- the negative electrode external terminal 851 joins the metal body 852 and the connection terminal 853 by both the mechanical joining method and the metallurgical joining method, has a press-fit structure as a mechanical joining portion, and is metallurgical. It has a welded structure in which the metal body 852 and the connection terminal 853 are butt welded by laser welding as a joint. Thereby, the mechanical strength between the metal body 852 and the connection terminal 853 can be secured by mechanical joining, and the electrical characteristics can be secured by metallurgical joining. Therefore, the reliability of the prismatic secondary battery 800A can be improved.
- this embodiment has a welded structure in which the metal body 852 and the connection terminal 853 are butt welded, welding can be performed with less welding energy compared to the lap welding in the first to third embodiments described above. It can be manufactured with a small-scale production facility, and the manufacturing cost can be kept low. Further, since the laser beam LB of laser welding can be applied in a direction perpendicular to the side surfaces 852c and 853c, the welding work is easier and easier to manufacture than fillet welding. Further, since the state in which the metal body 852 and the connection terminal 853 are welded can be visually confirmed, it is possible to easily perform a welding check and provide a high-quality product.
- the welding part 851a is provided in the side surface 852c, 853c side of the metal body 852 and the connection terminal 853, the welding surface 852a of the metal body 852 can be used over the whole surface, and a junction area with the bus-bar 1000 Can be secured more widely, and the electrical resistance with the bus bar 1000 can be reduced.
- connection terminal 853 can have a lower electrical resistance.
- Embodiment 9 Next, Embodiment 9 of the present invention will be described below with reference to FIGS. 14A to 14D.
- FIG. 14A is a front view showing a part of the prismatic secondary battery and bus bar of Embodiment 9
- FIG. 14B is an enlarged plan view showing the main part of the battery lid assembly of Embodiment 9
- FIG. 14C is a diagram. 14B is a cross-sectional view taken along line AA of FIG. 14B
- FIG. 14D is an enlarged view of a portion B of FIG. 14C. It should be noted that the description of the components having the same functions as those already described with reference to FIGS. 1 to 6 is omitted.
- the mechanical joint has a caulking structure and the metallurgical joint has a structure using friction stir welding.
- This embodiment is a rectangular secondary battery in which positive and negative external terminals are arranged on one surface of a rectangular battery container, and a flat wound group is built in the battery container, and one of the external terminals is a battery. It has a connection terminal that penetrates the container and is electrically connected to the flat wound group, and a dissimilar metal body that is joined to the connection terminal outside the battery container.
- connection terminal and a metal body As a junction part of a connection terminal and a metal body, it has a mechanical junction part and a metallurgical junction part, a mechanical junction part has a caulking structure, and a metallurgical junction part is friction stir welding (FSW). ) In which the connection terminal and the metal body are joined.
- FSW friction stir welding
- the negative external terminal 951 of the prismatic secondary battery 900A has a metal body 952 made of aluminum or aluminum alloy and a connection terminal 953 made of copper or copper alloy.
- the metal body 952 has a flat block shape having a substantially rectangular shape in plan view, and is disposed parallel to the battery cover 102 and a cover-facing surface 952b that faces the battery cover 102 with the gasket 130 interposed therebetween.
- a round hole 952d having a predetermined depth toward the welding surface 952a is provided at a substantially central position of the lid facing surface 952b.
- the connection terminal 953 has a round bar shape, and a base end portion 953a is inserted into the round hole 952d.
- the weld surface 952a is provided with a through hole 952e that penetrates to the bottom surface of the round hole 952d.
- the through hole 952e is narrowed to have a smaller hole diameter on the round hole 952d side than on the welding surface 952a side.
- a caulking portion 953b is provided at the base end portion 953a of the connection terminal 953.
- the caulking portion 953b is inserted into the through hole 952e, bent in the outer peripheral direction, and caulked to fix the metal body 952.
- the outer peripheral surface of the caulking portion 953b is in contact with the inner peripheral surface of the through hole 952e so as to be in contact with the end surface of the caulking portion 953b.
- the boundary portion between the outer peripheral surface of the caulking portion 953b of the connection terminal 953 and the inner peripheral surface of the through hole 952e of the metal body 952 is joined by friction stir welding (FSW) from the weld surface 952 side.
- FSW friction stir welding
- connection terminal 953 and the metal body 952 are mechanically joined by inserting and crimping the caulking portion 953b of the connection terminal 953 into the through hole 952e of the metal body 952. 14D, the boundary portion between the outer peripheral surface of the caulking portion 953b of the connection terminal and the inner peripheral surface of the through hole 952e of the metal body 952 is joined by friction stir welding from the welding surface 952 side.
- the terminal 953 and the metal body 952 are metallurgically joined.
- a friction stir welded joint portion 951a is formed at the boundary portion between the outer peripheral surface of the caulking portion 953b of the connection terminal 953 and the inner peripheral surface of the through hole 952e of the metal body 952, and the metal The body 952 and the connection terminal 953 are electrically connected.
- the joint portion 951a is continuously formed over the entire circumference along the boundary portion between the outer peripheral surface of the caulking portion 953b of the connection terminal 953 and the inner peripheral surface of the through hole 952e of the metal body 952. ing.
- the negative electrode external terminal 951 joins the metal body 952 and the connection terminal 953 by both the mechanical joining method and the metallurgical joining method, and has a caulking structure as a mechanical joining portion.
- the metal body 952 and the connection terminal 953 are metal-bonded by friction stir welding.
- the metal body 952 and the connection terminal 953 have a metal-bonded structure that is metal-bonded by friction stir welding, the heat at the time of manufacture is higher than that of the above-described welded structure using laser welding. Can be lowered. Therefore, it can manufacture with less energy, can manufacture with a small-scale production facility, and can suppress manufacturing cost low. Moreover, it can manufacture easily compared with the operation
- the base end portion 953a of the connection terminal 953 has been described as an example of a structure inserted into the round hole 952d, but may be a press-fit structure as in the other embodiments.
- the mechanical joint has two structures, that is, a caulking structure and a press-fitting structure, so that a stronger mechanical strength can be obtained.
- the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the spirit of the present invention described in the claims. Is something that can be done.
- the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described.
- a part of the configuration of an embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of an embodiment.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
Description
本実施形態は、角形の電池容器の1つの面に正極及び負極の外部端子が配置され、電池容器に扁平捲回群が内蔵された角形二次電池であって、一方の外部端子は、電池容器を貫通して扁平捲回群に電気的に接続される接続端子と、電池容器の外側で接続端子に接合される異種の金属体を有している。そして、接続端子と金属体との接合部として、機械的接合部と冶金的接合部を有しており、機械的接合部はねじ構造を有し、冶金的接合部はレーザ溶接で接続端子と金属体とを重ね溶接した溶接構造を有している。
次に、本発明の実施形態2について図7A~図7Cを用いて以下に説明する。
次に、本発明の実施形態3について図8A~図8Cを用いて以下に説明する。
次に、本発明の実施形態4について図9A~図9Dを用いて以下に説明する。
次に、本発明の実施形態5について図10~図10Dを用いて以下に説明する。
次に、本発明の実施形態6について図11A~図11Dを用いて以下に説明する。
次に、本発明の実施形態7について図12A~図12Dを用いて以下に説明する。
次に、本発明の実施形態8について図13A~図13Dを用いて以下に説明する。
次に、本発明の実施形態9について図14A~図14Dを用いて以下に説明する。
101 電池缶(電池容器)
102 電池蓋(電池容器)
141 正極外部端子
151 負極外部端子
151a 溶接部
152 金属体
153 接続端子
171 扁平捲回群
Claims (8)
- 角形の電池容器の1つの面に正極及び負極の外部端子が配置され、前記電池容器に扁平捲回群が収容された角形二次電池であって、
一方の外部端子は、前記電池容器を貫通して前記扁平捲回群に電気的に接続される接続端子と、該接続端子に接合される金属体とを有し、前記接続端子と前記金属体との接合部は、機械的接合部と冶金的接合部とを有することを特徴とする角形二次電池。 - 前記機械的接合部は、ねじ構造と、圧入構造と、かしめ構造の少なくともいずれか一つを有することを特徴とする請求項1に記載の角形二次電池。
- 前記冶金的接合部は、重ね溶接、すみ肉溶接、突き合わせ溶接のいずれか一つによる溶接構造を有することを特徴とする請求項2に記載の角形二次電池。
- 前記金属体は、前記電池容器に対向する対向面と、該対向面から離間した位置に配置されるバスバー溶接面と、対向面の周端縁とバスバー溶接面の周端縁との間に亘る側面とを有し、
前記冶金的接合部は、前記金属体のバスバー溶接面と、前記対向面と、前記側面のいずれか一つに設けられていることを特徴とする請求項3に記載の角形二次電池。 - 前記冶金的接合部は、前記重ね溶接による溶接構造を有する場合に、複数の溶接部を有することを特徴とする請求項3に記載の角形二次電池。
- 前記金属体は、前記対向面に開口して前記接続端子の基端部が挿入される丸穴と、該丸穴の底面と前記バスバー溶接面との間を貫通する貫通孔とを有することを特徴とする請求項5に記載の角形二次電池。
- 前記冶金的接合部は、摩擦攪拌接合による接合構造を有することを特徴とする請求項2に記載の角形二次電池。
- 前記金属体と前記接続端子との間の隙間に充填材が充填されていることを特徴とする請求項1に記載の角形二次電池。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/501,627 US20170229700A1 (en) | 2014-08-06 | 2014-08-06 | Prismatic secondary battery |
JP2016539730A JPWO2016020996A1 (ja) | 2014-08-06 | 2014-08-06 | 角形二次電池 |
EP14899163.1A EP3179537A4 (en) | 2014-08-06 | 2014-08-06 | Rectangular secondary battery |
PCT/JP2014/070691 WO2016020996A1 (ja) | 2014-08-06 | 2014-08-06 | 角形二次電池 |
CN201480080812.XA CN106575741A (zh) | 2014-08-06 | 2014-08-06 | 方形二次电池 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2014/070691 WO2016020996A1 (ja) | 2014-08-06 | 2014-08-06 | 角形二次電池 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016020996A1 true WO2016020996A1 (ja) | 2016-02-11 |
Family
ID=55263302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/070691 WO2016020996A1 (ja) | 2014-08-06 | 2014-08-06 | 角形二次電池 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20170229700A1 (ja) |
EP (1) | EP3179537A4 (ja) |
JP (1) | JPWO2016020996A1 (ja) |
CN (1) | CN106575741A (ja) |
WO (1) | WO2016020996A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017195164A (ja) * | 2016-04-22 | 2017-10-26 | 株式会社Gsユアサ | 蓄電素子 |
JP2019075308A (ja) * | 2017-10-17 | 2019-05-16 | 株式会社Gsユアサ | 蓄電素子及び蓄電モジュール |
CN114204230A (zh) * | 2020-09-17 | 2022-03-18 | 泰星能源解决方案有限公司 | 端子、具备该端子的二次电池以及它们的制造方法 |
KR20220037366A (ko) * | 2020-09-17 | 2022-03-24 | 프라임 플래닛 에너지 앤드 솔루션즈 가부시키가이샤 | 이차 전지용 단자 및 해당 단자를 구비한 이차 전지 |
JP2022049729A (ja) * | 2020-09-17 | 2022-03-30 | 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 | 端子及びそれを備えた二次電池並びにそれらの製造方法 |
JP2022118648A (ja) * | 2021-02-02 | 2022-08-15 | 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 | 電極端子およびその利用 |
JP2023024044A (ja) * | 2021-08-06 | 2023-02-16 | 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 | 端子部品ならびに該端子部品を備える二次電池および組電池 |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6931460B2 (ja) * | 2017-10-06 | 2021-09-08 | トヨタ自動車株式会社 | 電池および電池の製造方法 |
US11196129B2 (en) * | 2017-12-22 | 2021-12-07 | Panasonic Intellectual Property Management Co., Ltd. | Cell laminate |
CN207818646U (zh) * | 2018-01-11 | 2018-09-04 | 宁德时代新能源科技股份有限公司 | 电池顶盖组件、二次电池及电池模组 |
CN110034269B (zh) * | 2018-01-11 | 2024-04-05 | 宁德时代新能源科技股份有限公司 | 电池顶盖组件、二次电池及电池模组 |
DE102018209172A1 (de) * | 2018-06-08 | 2019-12-12 | Robert Bosch Gmbh | Batteriezelle, Batteriemodul und Verfahren zum Herstellen eines Batteriemoduls |
JP7245208B2 (ja) | 2020-09-17 | 2023-03-23 | 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 | 二次電池用端子および該端子を備えた二次電池 |
JP7304329B2 (ja) * | 2020-09-17 | 2023-07-06 | 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 | 二次電池ならびに二次電池用端子およびその製造方法 |
JP7353254B2 (ja) * | 2020-10-20 | 2023-09-29 | 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 | 二次電池 |
JP7334198B2 (ja) * | 2021-02-01 | 2023-08-28 | 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 | 電極端子および該電極端子を備えた二次電池 |
JP7389766B2 (ja) * | 2021-02-08 | 2023-11-30 | 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 | 端子部品、それを備えた二次電池および組電池並びに端子部品の製造方法 |
CN113714641A (zh) * | 2021-07-28 | 2021-11-30 | 武汉逸飞激光股份有限公司 | 导电端子焊接方法 |
WO2023148550A1 (en) * | 2022-02-03 | 2023-08-10 | G.D S.P.A. | Method to produce a battery for energy storage |
WO2024092731A1 (zh) * | 2022-11-04 | 2024-05-10 | 宁德时代新能源科技股份有限公司 | 端盖、电池单体、电池和用电设备 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001176495A (ja) * | 1999-12-15 | 2001-06-29 | Sanyo Electric Co Ltd | 電気エネルギー蓄積デバイス |
JP2001357834A (ja) * | 2000-06-16 | 2001-12-26 | Japan Storage Battery Co Ltd | 電 池 |
JP2005259690A (ja) * | 2004-02-13 | 2005-09-22 | Nok Corp | 封口板端子部の接合方法および接合構造 |
JP2010033766A (ja) * | 2008-07-25 | 2010-02-12 | Toyota Motor Corp | 電池、車両、電池搭載機器、及び、電池の製造方法 |
JP2011210720A (ja) * | 2010-03-30 | 2011-10-20 | Sb Limotive Co Ltd | 二次電池及び二次電池モジュール |
JP2012028308A (ja) * | 2010-07-21 | 2012-02-09 | Sb Limotive Co Ltd | 二次電池 |
EP2571074A1 (en) * | 2011-09-16 | 2013-03-20 | Samsung SDI Co., Ltd. | Rechargeable battery |
JP2013073745A (ja) * | 2011-09-27 | 2013-04-22 | Hitachi Vehicle Energy Ltd | 二次電池 |
WO2014103874A1 (ja) * | 2012-12-25 | 2014-07-03 | 株式会社Gsユアサ | 蓄電素子、蓄電素子アセンブリ及び蓄電素子の製造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4117340B2 (ja) * | 2005-04-28 | 2008-07-16 | 傅氏国際(大連)双金属線纜有限公司 | 銅クラッドアルミ母線の製造方法 |
JP5206264B2 (ja) * | 2008-09-16 | 2013-06-12 | トヨタ自動車株式会社 | 電池および電池の製造方法 |
KR101097227B1 (ko) * | 2010-02-08 | 2011-12-21 | 에스비리모티브 주식회사 | 배터리모듈 및 그 제조방법 |
JP2013222621A (ja) * | 2012-04-17 | 2013-10-28 | Hitachi Vehicle Energy Ltd | 二次電池 |
KR101693291B1 (ko) * | 2012-11-23 | 2017-01-05 | 삼성에스디아이 주식회사 | 이차 전지 |
-
2014
- 2014-08-06 US US15/501,627 patent/US20170229700A1/en not_active Abandoned
- 2014-08-06 EP EP14899163.1A patent/EP3179537A4/en not_active Withdrawn
- 2014-08-06 JP JP2016539730A patent/JPWO2016020996A1/ja active Pending
- 2014-08-06 CN CN201480080812.XA patent/CN106575741A/zh active Pending
- 2014-08-06 WO PCT/JP2014/070691 patent/WO2016020996A1/ja active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001176495A (ja) * | 1999-12-15 | 2001-06-29 | Sanyo Electric Co Ltd | 電気エネルギー蓄積デバイス |
JP2001357834A (ja) * | 2000-06-16 | 2001-12-26 | Japan Storage Battery Co Ltd | 電 池 |
JP2005259690A (ja) * | 2004-02-13 | 2005-09-22 | Nok Corp | 封口板端子部の接合方法および接合構造 |
JP2010033766A (ja) * | 2008-07-25 | 2010-02-12 | Toyota Motor Corp | 電池、車両、電池搭載機器、及び、電池の製造方法 |
JP2011210720A (ja) * | 2010-03-30 | 2011-10-20 | Sb Limotive Co Ltd | 二次電池及び二次電池モジュール |
JP2012028308A (ja) * | 2010-07-21 | 2012-02-09 | Sb Limotive Co Ltd | 二次電池 |
EP2571074A1 (en) * | 2011-09-16 | 2013-03-20 | Samsung SDI Co., Ltd. | Rechargeable battery |
JP2013073745A (ja) * | 2011-09-27 | 2013-04-22 | Hitachi Vehicle Energy Ltd | 二次電池 |
WO2014103874A1 (ja) * | 2012-12-25 | 2014-07-03 | 株式会社Gsユアサ | 蓄電素子、蓄電素子アセンブリ及び蓄電素子の製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3179537A4 * |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017195164A (ja) * | 2016-04-22 | 2017-10-26 | 株式会社Gsユアサ | 蓄電素子 |
JP2019075308A (ja) * | 2017-10-17 | 2019-05-16 | 株式会社Gsユアサ | 蓄電素子及び蓄電モジュール |
JP7029924B2 (ja) | 2017-10-17 | 2022-03-04 | 株式会社Gsユアサ | 蓄電素子及び蓄電モジュール |
JP7214692B2 (ja) | 2020-09-17 | 2023-01-30 | 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 | 端子及びそれを備えた二次電池並びにそれらの製造方法 |
US12074345B2 (en) | 2020-09-17 | 2024-08-27 | Prime Planet Energy & Solutions, Inc. | Terminal, secondary battery provided with same, and methods for producing same |
JP2022049730A (ja) * | 2020-09-17 | 2022-03-30 | 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 | 端子及びそれを備えた二次電池並びにそれらの製造方法 |
JP2022049729A (ja) * | 2020-09-17 | 2022-03-30 | 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 | 端子及びそれを備えた二次電池並びにそれらの製造方法 |
CN114204230A (zh) * | 2020-09-17 | 2022-03-18 | 泰星能源解决方案有限公司 | 端子、具备该端子的二次电池以及它们的制造方法 |
JP7214693B2 (ja) | 2020-09-17 | 2023-01-30 | 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 | 端子及びそれを備えた二次電池並びにそれらの製造方法 |
KR20220037366A (ko) * | 2020-09-17 | 2022-03-24 | 프라임 플래닛 에너지 앤드 솔루션즈 가부시키가이샤 | 이차 전지용 단자 및 해당 단자를 구비한 이차 전지 |
CN114204230B (zh) * | 2020-09-17 | 2023-11-14 | 泰星能源解决方案有限公司 | 端子、具备该端子的二次电池以及它们的制造方法 |
US12100865B2 (en) | 2020-09-17 | 2024-09-24 | Prime Planet Energy & Solutions, Inc. | Terminal for secondary battery and secondary battery provided with the terminal |
KR102641236B1 (ko) | 2020-09-17 | 2024-02-29 | 프라임 플래닛 에너지 앤드 솔루션즈 가부시키가이샤 | 이차 전지용 단자 및 해당 단자를 구비한 이차 전지 |
JP2022118648A (ja) * | 2021-02-02 | 2022-08-15 | 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 | 電極端子およびその利用 |
JP7296996B2 (ja) | 2021-02-02 | 2023-06-23 | 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 | 電極端子およびその利用 |
JP2023024044A (ja) * | 2021-08-06 | 2023-02-16 | 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 | 端子部品ならびに該端子部品を備える二次電池および組電池 |
US12068507B2 (en) | 2021-08-06 | 2024-08-20 | Prime Planet Energy & Solutions, Inc. | Terminal component and secondary battery and assembled battery each including the terminal component |
JP7426356B2 (ja) | 2021-08-06 | 2024-02-01 | 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 | 端子部品ならびに該端子部品を備える二次電池および組電池 |
Also Published As
Publication number | Publication date |
---|---|
EP3179537A1 (en) | 2017-06-14 |
CN106575741A (zh) | 2017-04-19 |
US20170229700A1 (en) | 2017-08-10 |
JPWO2016020996A1 (ja) | 2017-05-25 |
EP3179537A4 (en) | 2018-02-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2016020996A1 (ja) | 角形二次電池 | |
JP6089784B2 (ja) | 角形二次電池 | |
JP6093874B2 (ja) | 角形二次電池 | |
JP6138963B2 (ja) | 角形電池 | |
WO2020138492A1 (ja) | 電池およびその製造方法 | |
JP5868265B2 (ja) | 単電池および組電池 | |
JP5840207B2 (ja) | 二次電池 | |
JP5909504B2 (ja) | 電池における溶接構造、その形成方法、二次電池セルおよび二次電池モジュール | |
JP6363893B2 (ja) | 二次電池 | |
US20120270098A1 (en) | Sealed battery | |
WO2011135906A1 (ja) | 二次電池 | |
JP2016207510A (ja) | 角形二次電池 | |
JP5342090B1 (ja) | 蓄電素子 | |
WO2013031669A1 (ja) | 電池及びその製造方法 | |
WO2013046873A1 (ja) | 二次電池 | |
JP4688688B2 (ja) | 大電流放電用二次電池 | |
JP2014017081A (ja) | 二次電池 | |
JP2016207433A (ja) | 角形二次電池 | |
JP6192992B2 (ja) | 角形二次電池 | |
JP2013222621A (ja) | 二次電池 | |
JP6184747B2 (ja) | 角形二次電池 | |
JP5651556B2 (ja) | 二次電池 | |
JP2014049253A (ja) | 角形二次電池およびその製造方法 | |
JP5248210B2 (ja) | リチウムイオン二次電池 | |
JP2016081873A (ja) | 蓄電素子とその製造方法、および蓄電装置 |
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: 14899163 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016539730 Country of ref document: JP Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2014899163 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014899163 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |