# US 2014/0154534 A1 · Power battery safety head cover

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- Number: US 2014/0154534 A1
- Document ID: US20140154534A1
- Status: Published application
- Kind: A1
- Application number: 13/773,804
- Filed: 2013-02-22
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Ningde Amperex Technology Limited
- Applicants: Ningde Amperex Technology Limited
- Inventors: Xiaolei Liu; Pinghua Deng; Peng Wang; Yanhua Lu; Junzhong Hu
- Web page: https://patentgrep.com/patent/US20140154534A1

## CPC

- H01M 50/147: Lids or covers
- H01M 50/15: for prismatic or rectangular cells (H01M50/153 takes precedence)
- H01M 50/566: by welding, soldering or brazing
- H01M 50/581: in response to temperature
- H01M 50/55: on the same side of the cell
- H01M 2200/105: NTC
- 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

The invention pertains to the field of power battery technology, in particular to a power battery safety head cover, comprising a cover plate, a positive pole, a negative pole, a pressure release valve and a filling hole, wherein the positive pole, the negative pole, the pressure release valve and the filling hole are arranged on the cover plate, the positive pole is electrically connected with the cover plate, the negative pole is assembled with the cover plate in an insulating way, and the negative pole is connected with a negative temperature coefficient thermistor.

## Claims

### Claim 1

A power battery safety head cover, comprising a cover plate (2), a positive pole (1), a negative pole (6), a pressure release valve (4) and a filling hole (3), wherein the positive pole (1), the negative pole (6), the pressure release valve (4) and the filling hole (3) are arranged on the cover plate (2), the positive pole (1) is electrically connected with the cover plate (2), the negative pole (6) is assembled with the cover plate (2) in an insulating way, and the negative pole (6) is connected with a negative temperature coefficient thermistor (5).

### Claim 2 (depends on 1)

The power battery safety head cover of claim 1 wherein the negative temperature coefficient thermistor (5) is installed in the negative pole (6).

### Claim 3 (depends on 2)

The power battery safety head cover of claim 2 wherein the negative temperature coefficient thermistor (5) is welded, clamped or adhered in the negative pole (6).

### Claim 4 (depends on 1)

The power battery safety head cover of claim 1 wherein the cover plate (2) is shaped like a rectangle, a round or an oval.

### Claim 5 (depends on 1)

The power battery safety head cover of claim 1 wherein the positive pole (1) is conductively connected (welded or riveted) onto the cover plate (2).

### Claim 6 (depends on 1)

The power battery safety head cover of claim 1 wherein the negative pole (6) is assembled onto the cover plate (2) in an injection moulding and insulating way.