# US 5,707,758 A · Secondary battery

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- Number: US 5,707,758 A
- Document ID: US5707758A
- Status: Granted
- Kind: A
- Application number: 08/714,446
- Filed: 1996-09-16
- Granted: 1998-01-13
- Earliest claimed: 1995-09-27
- Assignees: Nissan Motor Co., Ltd.
- Inventors: Satoshi Iwatsu; Tatsuo Shimizu; Hideya Takahashi; Yosuke Kita; Kiyoshi Katayama; Etsuo Ogami
- Web page: https://patentgrep.com/patent/US5707758A

## CPC

- H01M 10/0431: {Cells with wound or folded electrodes (H01M10/045 takes precedence)}
- H01M 10/052: Li-accumulators
- H01M 10/0587: of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
- H01M 50/186: characterised by the disposition of the sealing members
- H01M 50/191: Inorganic material
- H01M 50/333: Spring-loaded vent valves
- H01M 6/10: with wound or folded electrodes
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 50/317: Re-sealable arrangements
- H01M 50/533: characterised by the shape of the leads or tabs
- H01M 50/627: Filling ports
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- 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

## Abstract

A nonaqueous electrolytic secondary battery is formed by winding a thin-film positive electrode, a thin-film negative electrode, and a thin-film separator. A cap is arranged at the distal end portion of a pole bored through the cap and interposed between a nut and a disk-like portion of the pole through a ceramic washer being in contact with the nut and a ceramic patch being in contact with the disk-like portion. The ceramic washer and the ceramic patch consist of alumina or zirconia. For a bolt for interposing a bus bar or a conductive line to fix the bus bar or the conductive line, a female screw portion formed in the pole is arranged in a space of a spindle.

## Claims

### Claim 1

A secondary battery in which a thin-film positive electrode, a thin-film negative electrode, and a separator are wound and stored in a battery vessel, comprising:
a cap for sealing an end opening portion of said battery vessel;
a pole penetrating through said cap and having a disk-like portion;
a nut arranged at the distal end portion of said pole;
a ceramic washer being in contact with said nut; and
a ceramic patch being in contact with the disk-like portion,
wherein said cap is interposed between said ceramic washer and said ceramic patch and fastened by the disk-like portion of said pole and said nut.

### Claim 2 (depends on 1)

A secondary battery according to claim 1, wherein said ceramic washer and said ceramic patch are of alumina or zirconia.

### Claim 3 (depends on 1)

A secondary battery according to claim 1, wherein said secondary battery is a nonaqueous electrolytic secondary battery.

### Claim 4 (depends on 1)

A secondary battery according to claim 1, wherein said secondary battery is a lithium secondary battery.

### Claim 5 (depends on 1)

A secondary battery according to claim 1, wherein said secondary battery is a large-size battery having an electric capacity of 10 to 500 Ah.

### Claim 6

A secondary battery comprising:
a battery vessel;
an electrode roll member obtained by winding a thin-film positive electrode, a thin-film negative electrode, and a thin-film separator and stored in said battery vessel;
a pole arranged at an opening portion of said battery vessel and having a female screw portion with which a bolt for interposing a bus bar or a conductive line between said bolt and said pole is meshed, said female screw portion being arranged in a central space of said electrode roll member.

### Claim 7 (depends on 6)

A secondary battery according to claim 6, wherein said secondary battery is a nonaqueous electrolytic secondary battery.

### Claim 8 (depends on 6)

A secondary battery according to claim 6, wherein said secondary battery is a lithium-ion secondary battery.

### Claim 9 (depends on 6)

A secondary battery according to claim 6, wherein said secondary battery is a large-size battery having an electric capacity of 10 to 500 Ah.