# US 11,444,349 B2 · Battery

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- Number: US 11,444,349 B2
- Document ID: US11444349B2
- Status: Granted
- Kind: B2
- Application number: 16/168,826
- Filed: 2018-10-24
- Published: 2019-07-25
- Granted: 2022-09-13
- Earliest claimed: 2018-01-25
- Assignees: Ningde Amperex Technology Limited
- Applicants: Ningde Amperex Technology Limited
- Inventors: Jiaxin An; Jinhua He; Wei Gao; Jinhui Chen; Kun Wang
- Web page: https://patentgrep.com/patent/US11444349B2

## CPC

- H01M 10/04: Construction or manufacture in general (H01M10/058, H01M10/12, H01M10/28, H01M10/38 take precedence)
- H01M 50/103: prismatic or rectangular (H01M50/109, H01M50/11 take precedence)
- H01M 50/14: for protecting against damage caused by external factors
- H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658)
- H01M 50/55: on the same side of the cell
- H01M 50/557: Plate-shaped terminals
- H01M 50/579: in response to shock
- H01M 2200/00: Safety devices for primary or secondary batteries
- H01M 2220/00: Batteries for particular applications
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

## Abstract

The present application discloses a battery to alleviate the impact on the main body of the battery and for improving the safety performance of the battery. The battery comprises a package case and a circuit board, wherein the package case forms a first surface and a buffer member is arranged between the circuit board and the first surface. In the present application, the buffer member between the circuit board and the first surface may alleviate the force received on the first surface, thereby alleviating the impact on the electrode assembly of the battery, avoiding the damage of the positive and negative electrode plates and the short circuit caused by the contact between the positive and negative electrodes, and improving the safety of battery.

## Claims

### Claim 1

A comprising a package case and a circuit board, wherein the package case forms a first surface parallel to the circuit board, and a buffer member is arranged between the circuit board and the first surface, the buffer member being parallel to the first surface and parallel to the circuit board, wherein the buffer member comprises a layered structure comprising at least an elastic layer and a rigid layer,
wherein the battery further comprises an electrode assembly including an electrode tab; the package case further includes a first side perpendicular to the first surface; and the electrode tab extends from the first side and is coupled with the circuit board,
wherein the buffer member includes a first buffer portion arranged between the circuit board and the first surface and a second buffer portion arranged between the circuit board and the first side, and
wherein the first buffer portion includes at least two elastic layers with the rigid layer arranged between the at least two elastic layers.

### Claim 2 (depends on 1)

The battery according to claim 1, wherein the first buffer portion and the second buffer portion are integrally formed.

### Claim 3 (depends on 1)

The battery according to claim 1, wherein a material of the elastic layer is at least one selected from the group consisting of polyvinylidene fluoride, polyethylene, polypropylene, styrene butadiene rubber, silica gel and rubber.

### Claim 4 (depends on 2)

The battery according to claim 2, wherein the thickness of the buffer member is between 0.1 mm and 5 mm.

### Claim 5 (depends on 1)

The battery according to claim 1, wherein the thickness of the buffer member is between 0.1 mm and 5 mm.

### Claim 6 (depends on 3)

The battery according to claim 3, wherein the thickness of the buffer member is between 0.1 mm and 5 mm.

### Claim 7 (depends on 1)

The battery according to claim 1, wherein the electrode assembly is adhered to an inner wall of the package case.