# US 10,312,493 B2 · Battery

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- Number: US 10,312,493 B2
- Document ID: US10312493B2
- Status: Granted
- Kind: B2
- Application number: 15/700,762
- Filed: 2017-09-11
- Published: 2018-03-15
- Granted: 2019-06-04
- Earliest claimed: 2016-09-12
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Mizuho Matsumoto
- Web page: https://patentgrep.com/patent/US10312493B2

## CPC

- B60L 50/64: Constructional details of batteries specially adapted for electric vehicles
- H01M 50/533: characterised by the shape of the leads or tabs
- H01M 50/543: Terminals
- H01M 50/55: on the same side of the cell
- H01M 10/00: Secondary cells; Manufacture thereof
- H01M 50/538: Connection of several leads or tabs of wound or folded electrode stacks
- H01M 2004/021: {Physical characteristics, e.g. porosity, surface area}
- H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

The battery according to the present invention includes electrodes provided with current collecting tabs 26 and 36, an electrode body 10 constituted by repeatedly laminating the electrodes in the direction of lamination, and tab groups 28 and 38 obtained by overlaying repeatedly laminated electrode tabs 26 in the direction of lamination. First tabs 26 and 36 included in the tab groups 28 and 38 have extending parts 26a and 36a which extend from an active material layer, and crossing parts 26b and 36b which extend in a direction perpendicular to, or intersecting at an acute angle with, the direction of extension A of the extending parts 26a and 36a. The crossing parts 26b and 36b are gathered together in the direction of lamination, and current collector terminals 70 and 72 are joined to the positions at which the crossing parts are gathered together.

## Claims

### Claim 1

A battery comprising:
positive and negative electrodes each provided with an active material layer and a current collecting tab that extends from an edge line of the active material layer in a direction perpendicular to the edge line;
an electrode body constituted by repeatedly and alternately laminating the positive and negative electrodes in the direction of lamination with a separator interposed therebetween;
tab groups obtained by overlaying, in the direction of lamination, same polarity tabs of the repeatedly laminated positive and negative electrodes; and
current collector terminals connected to the tab groups, wherein
the tab groups include, as the current collecting tabs, second tabs disposed on a center side of the tab groups in the direction of lamination and first tabs disposed on both outer sides of the tab groups in the direction of lamination,
the first tabs each have an extending part which extends from the edge line of the active material layer in a direction perpendicular to the edge line, and a crossing part which extends from the extending part in a width direction parallel to the edge line of the active material layer, or in a direction intersecting with the width direction and toward the edge line of the active material layer,
a width (Wc) of the second tabs in the width direction is greater than a width (Wb) of the crossing part of the first tabs in the width direction, and
the second tabs and the crossing parts of the first tabs are gathered together towards the center side in the direction of lamination, and the current collector terminals are joined to the positions at which the tabs are gathered together.

### Claim 2

A battery comprising:
positive and negative electrodes each provided with an active material layer and a current collecting tab that extends from an edge line of the active material layer in a direction perpendicular to the edge line;
an electrode body constituted by repeatedly and alternately laminating the positive and negative electrodes in the direction of lamination with a separator interposed therebetween;
tab groups obtained by overlaying, in the direction of lamination, same polarity tabs of the repeatedly laminated positive and negative electrodes; and
current collector terminals connected to the tab groups, wherein
the tab groups include, as the current collecting tabs, second tabs disposed only on one outer side of the tab groups in the direction of lamination, and first tabs disposed on a center side and another outer side of the tab groups in the direction of lamination,
the first tabs each have an extending part which extends from the edge line of the active material layer in a direction perpendicular to the edge line, and a crossing part which extends from the extending part in a width direction parallel to the edge line of the active material layer, or in a direction intersecting with the width direction and toward the edge line of the active material layer, and wherein
a width (Wc) of the second tabs in the width direction is greater than a width (Wb) of the crossing part of the first tabs in the width direction, and
the second tabs and the crossing parts of the first tabs are gathered together towards the one outer side in the direction of lamination, and the current collector terminals are joined to the positions at which the tabs are gathered together.

### Claim 3 (depends on 1)

The battery according to claim 1, wherein
the crossing part of each of the first tabs extends from the extending part in the width direction parallel to the edge line of the active material layer, or in the direction intersecting with the width direction and toward the edge line of the active material layer, when the first tabs are in an un-bent state.

### Claim 4 (depends on 2)

The battery according to claim 2, wherein
the crossing part of each of the first tabs extends from the extending part in the width direction parallel to the edge line of the active material layer, or in the direction intersecting with the width direction and toward the edge line of the active material layer, when the first tabs are in an un-bent state.