# US 2014/0154540 A1 · Power battery cover plate equipped with a current interruption device

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0154540 A1
- Document ID: US20140154540A1
- Status: Published application
- Kind: A1
- Application number: 13/773,867
- Filed: 2013-02-22
- Published: 2014-06-05
- Earliest claimed: 2012-12-03
- Assignees: Ningde Amperex Technology Limited
- Applicants: Ningde Amperex Technology Limited
- Inventors: Zhijun GUO; Peng Wang; Pinghua Deng; Kai Wu
- Web page: https://patentgrep.com/patent/US20140154540A1

## CPC

- H01M 50/147: Lids or covers
- H01M 50/3425: {in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member}
- 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 battery technology, in particular to a power battery cover plate equipped with a current interruption device, comprising a cover plate, a positive Terminal, a vent and a negative teminal, wherein, the positive Terminal, the vent and the negative teminal are installed on the cover plate; the negative teminal comprises an upper part of the negative teminal and a lower part of the negative teminal, in which, the lower part of the negative teminal is assembled with the upper part of the negative teminal in an insulated and sealed way, the upper part of the negative teminal is connected with the lower part of the negative teminal via an elastic connector, the lower part of the negative teminal is provided with a notch to which the elastic connector is corresponding to.

## Claims

### Claim 1

A power battery cover plate equipped with a current interruption device, comprising a cover plate (4), a positive Terminal (1), a vent (2) and a negative teminal (3), wherein, the positive Terminal (1), the vent (2) and the negative teminal (3) are installed on the cover plate (4);
the negative teminal (3) comprises an upper part of the negative teminal (31) and a lower part of the negative teminal (35), wherein the lower part of the negative teminal (35) is assembled with the upper part of the negative teminal (31) in an insulated and sealed way, the upper part of the negative teminal (31) is connected with the lower part of the negative teminal (35) via an elastic connector (36), the lower part of the negative teminal (35) is provided with a notch (8) to which the elastic connector (36) is corresponding to.

### Claim 2 (depends on 1)

The power battery cover plate equipped with a current interruption device of claim 1, wherein the cover plate (4) is shaped like a rectangle, a round or an oval.

### Claim 3 (depends on 1)

The power battery cover plate equipped with a current interruption device of claim 1, wherein the notch (8) is shaped like a round or an oval.

### Claim 4 (depends on 3)

The power battery cover plate equipped with a current interruption device of claim 3, wherein the notch (8) has a depth of 0.05-2 mm.

### Claim 5 (depends on 4)

The power battery cover plate equipped with a current interruption device of claim 4, wherein the notch (8) has a depth of 0.1-1 mm.

### Claim 6 (depends on 1)

The power battery cover plate equipped with a current interruption device of claim 1, wherein the upper part of the negative teminal (31) is, successively through a nut (32), an insulating located block (33) and a sealing ring (34), installed on the cover plate (4) in an insulated and sealed way.

### Claim 7 (depends on 6)

The power battery cover plate equipped with a current interruption device of claim 6, wherein the upper part of the negative teminal (31) is, via a spacer (37), arranged on the lower part of the negative teminal (35).