# US 2014/0154541 A1 · Assembled battery

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- Number: US 2014/0154541 A1
- Document ID: US20140154541A1
- Status: Published application
- Kind: A1
- Application number: 14/085,890
- Filed: 2013-11-21
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Inventors: Kazuma ASAKURA; Kosuke KUSABA; Katsunori SATO
- Web page: https://patentgrep.com/patent/US20140154541A1

## CPC

- H01M 50/56: Cup shaped terminals
- H01M 50/213: adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence)
- H01M 50/3425: {in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member}
- H01M 50/358: External gas exhaust passages located on the battery cover or case
- H01M 50/367: Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
- Y02E 60/10: Energy storage using batteries
- 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

## Abstract

An assembled battery including a plurality of single batteries, a fin shaped portion and a sheet member is provided. The fin shaped portion is disposed outside of the plurality of the single batteries. A gas exhaustion path is defined between the fin shaped portion and the plurality of a plurality of the single batteries. A gas discharged from the single batteries from the assembled battery is discharged from the assembled battery to an outside of the assembled battery through the gas exhaustion path in a battery abnormal condition. The sheet member is disposed between the gas exhaustion path and the plurality of the single batteries, and is an insulating member.

## Claims

### Claim 1

An assembled battery comprising:
a plurality of single batteries;
a fin shaped portion disposed outside of a plurality of the single batteries, a gas exhaustion path being defined between the fin shaped portion and the plurality of the single batteries, a gas discharged from the single batteries being discharged from the assembled battery to an outside of the assembled battery through the gas exhaustion path in a battery abnormal condition; and
a sheet member disposed between the gas exhaustion path and the plurality of the single batteries, the sheet member being an insulating member.

### Claim 2 (depends on 1)

The assembled battery according to claim 1, wherein
the single battery is a tubular single battery, the plurality of the single batteries are disposed in a radius direction of the single battery, the sheet member is kept into contact with a busbar for connecting terminals of the single batteries, and the terminals of the single batteries are adjacent to each other in the radius direction.

### Claim 3 (depends on 2)

The assembled battery according to claim 2, wherein
the terminal of the single battery is a positive electrode terminal provided with a gas exhaustion valve.

### Claim 4 (depends on 3)

The assembled battery according to claim 3, wherein
the single battery comprises a tubular battery case with a bottom surface serving as a negative electrode terminal, and the positive electrode terminal disposed to close an opening portion of the battery case.

### Claim 5 (depends on 2)

The assembled battery according to claim 2, wherein
the terminal of the single battery is a negative electrode terminal provided with a gas exhaustion valve.

### Claim 6 (depends on 5)

The assembled battery according to claim 5, wherein
the single battery comprises a tubular battery case with a bottom surface serving as a negative electrode terminal, and the negative electrode terminal disposed to close an opening portion of the battery case.

### Claim 7 (depends on 1)

The assembled battery according to claim 1, wherein
the fin shaped portion has a shape providing concave and convex portions consecutively disposed alternately.

### Claim 8 (depends on 7)

The assembled battery according to claim 7, wherein
the fin shaped portion is configured to consecutively connect curve shaped portions having curved surfaces.

### Claim 9 (depends on 8)

The assembled battery according to claim 8, wherein
the fin shaped portion is configured to consecutively connect the curve shaped portions with a flat shaped portion having a flat surface interposed between the curve shaped portions.

### Claim 10 (depends on 7)

The assembled battery according to claim 7, wherein
the fin shaped portion is configured to consecutively connect flat shaped portions to be in concave convex shapes in cross section.

### Claim 11 (depends on 7)

The assembled battery according to claim 7, wherein
the fin shaped portion is configured to consecutively connect V-shaped portions.

### Claim 12 (depends on 7)

The assembled battery according to claim 7, wherein
each of the concave portions extends in a gas exhaustion direction in the gas exhaustion path.