WO2024162159A1 - 蓄電装置 - Google Patents
蓄電装置 Download PDFInfo
- Publication number
- WO2024162159A1 WO2024162159A1 PCT/JP2024/002154 JP2024002154W WO2024162159A1 WO 2024162159 A1 WO2024162159 A1 WO 2024162159A1 JP 2024002154 W JP2024002154 W JP 2024002154W WO 2024162159 A1 WO2024162159 A1 WO 2024162159A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- storage device
- negative electrode
- current collector
- plate
- joint
- 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
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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- 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
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- 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
- This disclosure relates to a collector plate for a power storage device.
- Cylindrical batteries which are one type of energy storage device, have a wound electrode body in which a positive electrode plate and a negative electrode plate are wound with a separator interposed between them.
- Large-diameter cylindrical batteries may also have a structure in which a negative electrode current collector plate is joined to the exposed part of the negative electrode core material protruding from the wound electrode body (hereinafter, referred to as an end-face current collector structure) (for example, Patent Document 1).
- the present disclosure therefore aims to provide an energy storage device that can improve productivity.
- the energy storage device is an energy storage device including an electrode body in which a first electrode plate and a second electrode plate are stacked with a separator interposed therebetween, and a current collector plate arranged at one end side in the axial direction of the electrode body, the current collector plate having a joint portion that extends along the stacking direction of the first electrode plate and the second electrode plate and is joined to the second electrode plate, and the joint portion is inclined in a direction that intersects with the stacking direction.
- the energy storage device disclosed herein can improve productivity.
- FIG. 1 is a schematic cross-sectional view showing an example of an electricity storage device according to an embodiment
- FIG. 1 is a perspective view showing the joint between a negative electrode current collector plate and an electrode body, as viewed from below.
- FIG. 2 is a perspective view showing a negative electrode current collector plate according to an embodiment, as viewed from below.
- FIG. 4 is a cross-sectional view taken along line AA of FIG.
- FIG. 2 is a cross-sectional view taken along line AA of a negative electrode current collector plate according to another embodiment.
- FIG. 13 is a schematic diagram showing reflected light during welding of a conventional negative electrode current collector plate.
- FIG. 4 is a schematic diagram showing reflected light during welding of a negative electrode current collector plate according to the present disclosure.
- the power storage device 10 is used, for example, as a power source for an electric vehicle.
- the power storage device of the present disclosure is not limited to being used as a power source for electric vehicles, and may be used, for example, as a power source for motor-driven electric devices such as power tools, power-assisted bicycles, electric motorcycles, electric wheelchairs, electric tricycles, and electric carts.
- the power storage device of the present disclosure may also be used as a power source for various electric devices used indoors and outdoors, such as cleaners, radios, lighting devices, digital cameras, and video cameras.
- the energy storage device 10 includes a wound electrode body 14 in which a positive electrode plate 11 as a first electrode plate and a negative electrode plate 12 as a second electrode plate are wound with a separator 13 interposed therebetween, an outer can 20 that houses the electrode body 14, and a sealing body 30 that closes the opening of the outer can 20.
- the outer can 20 houses an electrolyte together with the electrode body 14.
- the electrolyte in this embodiment is a non-aqueous electrolyte, but may be an aqueous electrolyte.
- the energy storage device may be a capacitor.
- each member may be described using the axial direction P, the circumferential direction R, and the radial direction D.
- the side in the axial direction P where the sealing body 30 is provided may be described as the upper side
- the side where the bottom 20B of the outer can 20 is formed may be described as the lower side.
- the positive electrode plate 11, the negative electrode plate 12, and the separator 13 are all long strips wound in a spiral shape. At this time, the positive electrode plate 11 and the negative electrode plate 12 are stacked in a shifted manner so that they protrude to opposite sides in the axial direction P (height direction of the storage device).
- the composite layer of the negative electrode plate 12 may be formed to be one size larger than the composite layer of the positive electrode plate 11 in order to prevent lithium precipitation. In other words, the composite layer of the negative electrode plate 12 may be formed to be longer in the longitudinal direction and width direction (short direction) than the composite layer of the positive electrode plate 11.
- the separator 13 is formed to be at least one size larger than the positive electrode plate 11, and for example, two separators 13 are arranged to sandwich the positive electrode plate 11. Note that the electrode body 14 does not necessarily have to be configured in a state in which the positive electrode plate 11 and the negative electrode plate 12 are wound. For example, the electrode body 14 may be configured by stacking multiple positive electrode plates and multiple negative electrode plates alternately.
- the positive electrode plate 11 has a positive electrode core and a positive electrode mixture layer formed on at least one surface of the core.
- the positive electrode core is made of a metal foil that is stable in the potential range of the positive electrode plate 11, such as aluminum or an aluminum alloy, or a film with the metal disposed on the surface.
- the positive electrode mixture layer contains, for example, a positive electrode active material, a conductive agent such as acetylene black, and a binder such as polyvinylidene fluoride, and is preferably formed on both sides of the positive electrode core.
- the positive electrode active material is, for example, a lithium transition metal complex oxide.
- the negative electrode plate 12 has a negative electrode core and a negative electrode mixture layer formed on at least one surface of the core.
- a foil of a metal that is stable in the potential range of the negative electrode plate 12, such as copper or a copper alloy, or a film with the metal disposed on the surface layer can be used.
- the negative electrode mixture layer preferably contains, for example, a negative electrode active material and a binder such as styrene-butadiene rubber (SBR), and is formed on both sides of the negative electrode core.
- SBR styrene-butadiene rubber
- graphite, a silicon-containing compound, etc. are used as the negative electrode active material.
- the non-aqueous electrolyte contained in the exterior can 20 includes a non-aqueous solvent and an electrolyte salt dissolved in the non-aqueous solvent.
- a non-aqueous solvent for example, esters, ethers, nitriles, amides, or a mixed solvent of two or more of these is used as the non-aqueous solvent.
- the non-aqueous solvent may contain a halogen-substituted body in which at least a part of the hydrogen of these solvents is replaced with a halogen atom such as fluorine.
- the non-aqueous solvent include ethylene carbonate (EC), ethyl methyl carbonate (EMC), dimethyl carbonate (DMC), and a mixed solvent of these.
- a lithium salt such as LiPF 6 is used as the electrolyte salt.
- the non-aqueous electrolyte may be a gel electrolyte, a solid electrolyte, or the like, instead of an electrolytic
- a positive electrode lead 15 extending from the upper end of the electrode body 14 in the axial direction P and connecting the positive electrode plate 11 constituting the electrode body 14 and the current collector plate 32 of the sealing body 30, and an upper insulating plate 16 disposed between the electrode body 14 and the sealing body 30.
- the positive electrode lead 15 electrically connects the positive electrode plate 11 and the sealing body 30.
- the positive electrode cap 31 of the sealing body 30 functions as a positive electrode external terminal as a first electrode external terminal.
- the upper insulating plate 16 prevents the positive electrode plate 11 and the positive electrode lead 15 from touching the outer can 20, and also prevents the positive electrode lead 15 from touching the negative electrode plate 12 of the electrode body 14.
- a negative electrode current collector 40 is provided below the electrode body 14.
- the negative electrode core material exposed portion 18 is formed from the end at the start of winding to the end at the end of winding in the longitudinal direction (circumferential direction R) of the long negative electrode plate 12.
- the negative electrode core material exposed portion 18 is bonded to the negative electrode current collector 40, and the negative electrode plate 12 and the negative electrode current collector 40 are electrically connected.
- the negative electrode current collector 40 is bonded to the inner surface of the bottom 20B of the outer can 20, and the negative electrode current collector 40 and the outer can 20 are electrically connected.
- the outer can 20 is a cylindrical metal container with a bottom that is open at the top end in the axial direction P.
- the outer can 20 is generally made of a metal whose main component is iron, but when the positive electrode plate 11 is connected, it may be made of a metal whose main component is aluminum or the like.
- the outer can 20 has a cylindrical tube portion 20A, a circular bottom portion 20B when viewed from the bottom, a shoulder portion 20C that is formed in an annular shape along the circumferential direction R of the outer can 20 at the open end of the tube portion 20A, and a groove portion 20D that is formed along the circumferential direction R of the tube portion 20A.
- the outer can 20 is also provided with a negative electrode cap 21 as a second electrode external terminal (negative electrode external terminal).
- the groove portion 20D is formed at a position a predetermined length away from the shoulder portion 20C near the opening of the outer can 20.
- the groove portion 20D is a portion of the tubular portion 20A that protrudes inwardly of the outer can 20, and is formed, for example, by spinning the tubular portion 20A from the outside.
- the outer can 20 is reduced in diameter, and a thin groove is formed on the outer peripheral surface of the tubular portion 20A.
- the groove portion 20D has a generally U-shaped cross section, and is preferably formed in a ring shape over the entire length of the tubular portion 20A in the circumferential direction R.
- the negative electrode cap 21 is electrically connected to the negative electrode plate 12 via the outer can 20 and functions as a negative electrode external terminal.
- the negative electrode cap 21 is formed in a ring shape with an opening in the center in the radial direction D.
- the negative electrode cap 21 is welded to the shoulder portion 20C of the outer can 20 and is electrically connected to the outer can 20.
- the sealing body 30 is formed in a disk shape overall, and includes a positive electrode cap 31, a current collector plate 32, a gasket 33, and an insulating member 34.
- the sealing body 30 is placed on the groove portion 20D of the outer can 20, and is fixed to the upper end of the outer can 20. More specifically, the shoulder portion 20C of the outer can 20 is bent inward in the radial direction D and crimped against the sealing body 30, and the sealing body 30 is fixed to the upper end of the outer can 20 by the shoulder portion 20C and the groove portion 20D of the outer can 20, and the sealing body 30 closes the opening of the outer can 20.
- the positive electrode cap 31 is electrically connected to the positive electrode plate 11 via the positive electrode lead 15 and the current collector plate 32, and functions as a positive electrode external terminal.
- the positive electrode cap 31 is a disk-shaped metal member, and has a protruding portion 31A whose central portion in the radial direction D protrudes outside the energy storage device 10, and a flange portion 31B formed around the protruding portion 31A.
- the positive electrode cap 31 is disposed on the upper surface side of the sealing body 30, and is exposed to the outside of the exterior can 20 to form the top surface of the energy storage device 10.
- a positive electrode tab or the like is joined to the protruding portion 31A by welding.
- the current collector 32 is electrically connected to the positive electrode plate 11 via the positive electrode lead 15, and functions as a positive electrode current collector.
- the current collector 32 is a metal member having a diameter similar to that of the positive electrode cap 31.
- the current collector 32 is formed in a ring shape with an opening in the center in the radial direction D.
- the current collector 32 is disposed closer to the electrode body 14 than the positive electrode cap 31.
- the current collector 32 is welded to the positive electrode cap 31, for example, at a position closer to the outer periphery than the center in the radial direction D of the positive electrode cap 31.
- the gasket 33 is a rubber or resin member that prevents contact between the positive electrode cap 31 and the current collector plate 32 and the outer can 20, and ensures electrical insulation between the outer can 20 and the sealing body 30.
- the gasket 33 also seals the gap between the outer can 20 and the sealing body 30, sealing the inside of the energy storage device 10.
- the gasket 33 is provided between the outer periphery of the stack of the positive electrode cap 31 and the current collector plate 32 and the outer can 20.
- the gasket 33 covers the upper surface of the flange portion 31B of the positive electrode cap 31, the side surfaces of the positive electrode cap 31 and the current collector plate 32, and the lower surface of the current collector plate 32 at the outer periphery of the stack.
- the insulating member 34 is a rubber or resin member that prevents contact between the positive electrode cap 31 and the negative electrode cap 21 and ensures electrical insulation between the positive electrode cap 31 and the negative electrode cap 21.
- the insulating member 34 is formed in a ring shape with an opening in the center in the radial direction D.
- the negative electrode current collector plate 40 as one example of the embodiment will be described with reference to FIG. 2 to FIG.
- the negative electrode current collector 40 which serves as a current collector, is joined to the negative electrode core material exposed portion 18 protruding from the lower side of the electrode body 14 in the axial direction P.
- the negative electrode current collector 40 is also joined to the bottom portion 20B of the outer can 20, causing the outer can 20 to function as a negative electrode external terminal.
- the negative electrode current collector 40 can improve the productivity of the energy storage device 10, as will be described in detail later.
- the negative electrode current collector 40 is preferably made of a metal, such as copper, a copper alloy, nickel or a nickel alloy, or an iron material with a nickel-plated surface.
- the negative electrode current collector 40 is provided below the electrode body 14 in the axial direction P, and is housed in the exterior can 20 together with the electrode body 14. In other words, the negative electrode current collector 40 is disposed between the electrode body 14 and the bottom 20B of the exterior can 20 (see FIG. 1).
- the negative electrode collector plate 40 has a central portion 41 provided in the center of the radial direction D (the stacking direction of the positive electrode plates 11 and the negative electrode plates 12), and an extension portion 43 extending from the central portion 41 along the radial direction D, as will be described in detail later.
- the central portion 41 is the portion that is joined to the bottom portion 20B of the outer can 20 by welding.
- the multiple extension portions 43 extend from the central portion 41 along the radial direction D.
- the multiple extension portions 43 are arranged at intervals in the circumferential direction R.
- four extension portions 43 are arranged radially from the central portion 41 at 90° intervals. Note that, although the extension portions 43 extend in four directions in this embodiment, they may extend in one, two, three, or five or more directions.
- the extension portion 43 has a joint portion 44 extending along the radial direction D, and edge portions 45 formed at both ends of the joint portion 44 in the circumferential direction R.
- the joint portion 44 is a portion that is joined to the negative electrode core material exposed portion 18 by welding. More specifically, the negative electrode core material exposed portion 18 is joined to the upper surface of the joint portion 44 in the axial direction P by welding.
- the joint portion 44 extends along the radial direction D, and is formed in a portion that corresponds to the bottom edge of the concave shape when viewed from the radial direction D. In other words, the joint portion 44 is formed on the bottom surface of the concave shape.
- the joint 44 is inclined when viewed from the radial direction D.
- the joint 44 extends at an incline in a direction intersecting the radial direction D (for example, a direction perpendicular to the radial direction D).
- the inclination angle of the joint 44 when viewed from the radial direction D is 3° or more and 10° or less with respect to the horizontal plane, and preferably 5° or more and 10° or less.
- the inclination angle of the joint 44 is preferably the same along the radial direction D.
- the inclination direction of the joint 44 (the right side is the upper side when viewed from the outside of the radial direction D, or the left side is the upper side) is not particularly limited.
- the inclination in the circumferential direction R intersecting the radial direction D can suppress the distance between the light source and the irradiated surface from differing in the radial direction when the laser light source is moved in the radial direction D for irradiation, and can suppress unevenness in the degree of melting at the joint.
- the edge portion 45 is a portion that abuts against the negative electrode core material exposed portion 18.
- the edge portion 45 may be provided on both ends of the joint portion 44 in the circumferential direction R, or may be formed on only one end of the circumferential direction R. In this embodiment, the edge portion 45 is formed substantially horizontally, but may also be formed at an angle.
- the joint 44 may be formed in a portion corresponding to one side of the V-shape as viewed from the radial direction D.
- one of the inclined surfaces corresponding to the joint 44 as viewed from the radial direction D is formed longer than the other inclined surface.
- This configuration makes it possible to more reliably irradiate the laser on the inclined surface compared to, for example, a negative electrode current collector plate in which the connection position of the inclined surface is at the center of the recess.
- the solidified portion formed by irradiating the laser is disposed between the two ends of the joint, which is an inclined surface, in the circumferential direction R.
- the joint 44 is inclined as described above as viewed from the radial direction D.
- the inclination angle of the joint 44 as viewed from the radial direction D is 3° or more and 10° or less with respect to the horizontal plane, and preferably 5° or more and 10° or less.
- the negative electrode current collector 40 will be explained in comparison with a conventional negative electrode current collector 140 using Figures 6A and 6B.
- a long negative electrode current collecting plate 140 is welded to the negative electrode core material exposed portion 118 that protrudes downward from the electrode body 114 and is bent along the radial direction D of the electrode body 114.
- a laser or the like is irradiated from below the negative electrode current collecting plate 140, thereby melting and joining the negative electrode current collecting plate 140 and the negative electrode core material exposed portion 118 that is in close contact with the upper surface of the negative electrode current collecting plate.
- the negative electrode current collector 140 may be made of copper or aluminum, which are highly reflective materials. Furthermore, in the laser oscillator L, if reflected light from the laser irradiation returns inside the laser oscillator L, the laser irradiation may become unstable, which may cause the laser oscillator L to malfunction. Therefore, in the laser oscillator L, if reflected light to the laser oscillator L is detected, control is performed to stop the laser irradiation. Therefore, as shown in FIG. 6A, when laser welding the joint 144 of the negative electrode current collector 140 and the negative electrode core material exposed portion 118, the amount of reflected light to the laser oscillator L is large, so that the laser oscillator L may detect the reflected light and stop.
- a method of tilting the laser transmitter and irradiating the laser can be considered.
- this requires using a robot that supports the laser transmitter, an XY stage, etc. to track the laser incidence angle, which slows down the production speed and may actually reduce productivity.
- the joint 44 is inclined when viewed from the radial direction D (inclined in a direction intersecting the radial direction D), so that reflected light returning to the laser oscillator L can be suppressed. More specifically, when the negative electrode current collector 40 and the negative electrode core material exposed portion 18 are laser welded together, the joint 44 is inclined when viewed from the radial direction D, so that the laser irradiation surface is inclined, and reflected light to the laser oscillator L can be suppressed. This makes it possible to avoid the laser oscillator L stopping due to the return of reflected light.
- the joint 44 is inclined when viewed from the radial direction D, so the length of the joint 44 in the circumferential direction R is longer than when the joint 44 is horizontal when viewed from the radial direction D. This makes it possible to increase the weld width between the negative electrode current collector plate 40 and the electrode body 14.
- the joints 44 are inclined when viewed from the radial direction D, so that the deepest part of the joints 44 penetrates deeper into the negative electrode core material exposed part 18 compared to when the joints 44 are horizontal when viewed from the radial direction D. This improves the bonding strength between the negative electrode current collector 40 and the electrode body 14. Furthermore, when the negative electrode current collector 40 has multiple joints 44, it is preferable that the inclination direction of the inclined surface is the same in the circumferential direction. This configuration makes it possible to more firmly restrict the displacement in the winding direction that occurs when the wound electrode body 14 is charged and discharged.
- the present disclosure is not limited to the above-described embodiment and its modified examples, and various modifications and improvements are possible within the scope of the matters described in the claims of the present application.
- the configuration of the current collector plate used in the energy storage device of the present disclosure has been described as a negative electrode current collector plate, but the current collector plate of the present disclosure may also be a positive electrode current collector plate.
- the current collector plate of the present disclosure may be joined to a sealing body instead of an outer can.
- the current collector plate of the present disclosure may be disposed on the opening side of the outer can and may also serve as a sealing body.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
図1を用いて、実施形態の一例である蓄電装置10について説明する。
図2から図6を用いて、実施形態の一例である負極集電板40について説明する。
Claims (8)
- 第1極板と第2極板とがセパレータを介して積層された電極体と、前記電極体の軸方向の一端側に配置された集電板と、を備える蓄電装置であって、
前記集電板は、前記第1極板と前記第2極板の積層方向に沿って延びると共に前記第2極板と接合される接合部を有し、
前記接合部は、前記積層方向に交差する方向に傾斜している、
蓄電装置。 - 請求項1に記載の蓄電装置であって、
前記接合部は、前記積層方向から見て凹形状の底面に形成される、
蓄電装置。 - 請求項2に記載の蓄電装置であって、
前記接合部の傾斜方向において、前記接合部の両端の間に凝固部が形成された、
蓄電装置。 - 請求項1に記載の蓄電装置であって、
前記接合部は、前記積層方向から見てV形状の一方の辺である、
蓄電装置。 - 請求項1~4のいずれか一項に記載の蓄電装置であって、
前記接合部の傾斜角度は、5°以上、10°以下である、
蓄電装置。 - 請求項1~5のいずれか一項に記載の蓄電装置であって、
前記接合部は、レーザ照射による溶接によって接合される、
蓄電装置。 - 請求項1~6のいずれか一項に記載の蓄電装置であって、
前記第1極板と前記第2極板とが前記セパレータを介して巻回され、
前記電極体は、円柱形状であって、
前記接合部は、前記電極体の径方向に沿って延びる、
蓄電装置。 - 請求項1~7のいずれか一項に記載の蓄電装置であって、
前記集電板は、複数の前記接合部を有し、
前記複数の接合部はそれぞれ、前記電極体の周方向において、同じ向きに傾斜した、
蓄電装置。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202480007981.4A CN120569849A (zh) | 2023-01-31 | 2024-01-25 | 蓄电装置 |
| EP24750108.3A EP4661197A1 (en) | 2023-01-31 | 2024-01-25 | Power storage device |
| JP2024574506A JPWO2024162159A1 (ja) | 2023-01-31 | 2024-01-25 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023013017 | 2023-01-31 | ||
| JP2023-013017 | 2023-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024162159A1 true WO2024162159A1 (ja) | 2024-08-08 |
Family
ID=92146311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2024/002154 Ceased WO2024162159A1 (ja) | 2023-01-31 | 2024-01-25 | 蓄電装置 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4661197A1 (ja) |
| JP (1) | JPWO2024162159A1 (ja) |
| CN (1) | CN120569849A (ja) |
| WO (1) | WO2024162159A1 (ja) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003109576A (ja) * | 2001-09-28 | 2003-04-11 | Sanyo Electric Co Ltd | 電池の製造方法および電池製造用の接合装置 |
| JP2005203374A (ja) | 2004-01-16 | 2005-07-28 | Samsung Sdi Co Ltd | 二次電池 |
| JP2007265846A (ja) * | 2006-03-29 | 2007-10-11 | Sanyo Electric Co Ltd | 円筒形電池およびその製造方法 |
| JP2008066075A (ja) * | 2006-09-06 | 2008-03-21 | Hitachi Ltd | 非水電解質二次電池 |
| WO2008111284A1 (ja) * | 2007-03-15 | 2008-09-18 | Panasonic Corporation | 二次電池および二次電池の製造方法 |
| JP2009087915A (ja) * | 2007-10-02 | 2009-04-23 | Samsung Sdi Co Ltd | 2次電池 |
| JP2020525995A (ja) * | 2017-07-03 | 2020-08-27 | モンバット・ニュー・パワー・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | 蓄電池を製造する方法及び装置、並びに蓄電池 |
| WO2022216076A1 (ko) * | 2021-04-09 | 2022-10-13 | 주식회사 엘지에너지솔루션 | 전극 조립체, 배터리 셀, 배터리 셀 가공장치, 이를 포함하는 배터리 팩 및 차량 |
| WO2023286687A1 (ja) * | 2021-07-16 | 2023-01-19 | パナソニックホールディングス株式会社 | 集電板およびこれを用いた蓄電装置 |
-
2024
- 2024-01-25 JP JP2024574506A patent/JPWO2024162159A1/ja active Pending
- 2024-01-25 EP EP24750108.3A patent/EP4661197A1/en active Pending
- 2024-01-25 WO PCT/JP2024/002154 patent/WO2024162159A1/ja not_active Ceased
- 2024-01-25 CN CN202480007981.4A patent/CN120569849A/zh active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003109576A (ja) * | 2001-09-28 | 2003-04-11 | Sanyo Electric Co Ltd | 電池の製造方法および電池製造用の接合装置 |
| JP2005203374A (ja) | 2004-01-16 | 2005-07-28 | Samsung Sdi Co Ltd | 二次電池 |
| JP2007265846A (ja) * | 2006-03-29 | 2007-10-11 | Sanyo Electric Co Ltd | 円筒形電池およびその製造方法 |
| JP2008066075A (ja) * | 2006-09-06 | 2008-03-21 | Hitachi Ltd | 非水電解質二次電池 |
| WO2008111284A1 (ja) * | 2007-03-15 | 2008-09-18 | Panasonic Corporation | 二次電池および二次電池の製造方法 |
| JP2009087915A (ja) * | 2007-10-02 | 2009-04-23 | Samsung Sdi Co Ltd | 2次電池 |
| JP2020525995A (ja) * | 2017-07-03 | 2020-08-27 | モンバット・ニュー・パワー・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | 蓄電池を製造する方法及び装置、並びに蓄電池 |
| WO2022216076A1 (ko) * | 2021-04-09 | 2022-10-13 | 주식회사 엘지에너지솔루션 | 전극 조립체, 배터리 셀, 배터리 셀 가공장치, 이를 포함하는 배터리 팩 및 차량 |
| WO2023286687A1 (ja) * | 2021-07-16 | 2023-01-19 | パナソニックホールディングス株式会社 | 集電板およびこれを用いた蓄電装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2024162159A1 (ja) | 2024-08-08 |
| EP4661197A1 (en) | 2025-12-10 |
| CN120569849A (zh) | 2025-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5103489B2 (ja) | 密閉型電池 | |
| JP7645388B2 (ja) | 改善された集電板を含む円筒形二次電池、それを含むバッテリーパック及び自動車 | |
| JP6593344B2 (ja) | 円筒形電池 | |
| WO2021230250A1 (ja) | 二次電池およびその製造方法 | |
| WO2019194253A1 (ja) | 電池 | |
| JP2024506622A (ja) | バッテリーの製造方法 | |
| JPWO2019194227A1 (ja) | 電池 | |
| CN118765465A (zh) | 二次电池用电极 | |
| JP5619033B2 (ja) | 密閉型電池およびその製造方法 | |
| JP2017188338A (ja) | 二次電池 | |
| JP6275956B2 (ja) | 二次電池 | |
| JP2016091670A (ja) | 円筒形二次電池 | |
| WO2024162159A1 (ja) | 蓄電装置 | |
| JP5248210B2 (ja) | リチウムイオン二次電池 | |
| JP4120353B2 (ja) | 二次電池及び該製造方法 | |
| US20250219261A1 (en) | Power storage device | |
| WO2024143319A1 (ja) | 蓄電装置および蓄電モジュール | |
| WO2025077164A1 (zh) | 电池单体、电池单体的制备方法、电池及其用电装置 | |
| JP4459559B2 (ja) | 密閉型電池 | |
| JP2006278013A (ja) | 電池及びその製造方法 | |
| EP4661195A1 (en) | Power storage device | |
| CN120019543A (zh) | 蓄电装置 | |
| TWI719050B (zh) | 蓄電裝置 | |
| EP4661196A1 (en) | Power storage device | |
| WO2024203729A1 (ja) | 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: 24750108 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2024574506 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202480007981.4 Country of ref document: CN Ref document number: 202517067809 Country of ref document: IN |
|
| WWP | Wipo information: published in national office |
Ref document number: 202480007981.4 Country of ref document: CN |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWP | Wipo information: published in national office |
Ref document number: 2024750108 Country of ref document: EP |