# US 10,374,209 B2 · Rechargeable battery

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- Number: US 10,374,209 B2
- Document ID: US10374209B2
- Status: Granted
- Kind: B2
- Application number: 14/880,017
- Filed: 2015-10-09
- Published: 2016-10-06
- Granted: 2019-08-06
- Earliest claimed: 2015-04-06
- Assignees: Samsung SDI Co., Ltd.
- Applicants: Samsung SDI Co., Ltd.
- Inventors: Chi-Young Lee; Myung-Jae Jang
- Web page: https://patentgrep.com/patent/US10374209B2

## CPC

- H01M 50/176: for prismatic or rectangular cells (H01M50/181 takes precedence)
- H01M 50/55: on the same side of the cell
- H01M 50/553: Terminals adapted for prismatic, pouch or rectangular cells
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

## Abstract

A rechargeable battery includes an electrode assembly having a first electrode and a second electrode on either side of a separator, a case accommodating the electrode assembly, a cap plate sealing the case and electrically connected to the second electrode, a first terminal electrically connected to the first electrode and located with a terminal hole of the cap plate, and a second terminal directly connected to the cap plate, wherein the second terminal includes a spacing part spaced from the cap plate and configured to be connected to a bus bar, and a connection part connected to the spacing part through a round part and connected to the cap plate, wherein a curvature radius of an outer surface of the round part is less than a first thickness of the connection part.

## Claims

### Claim 1

A rechargeable battery comprising:
an electrode assembly including a first electrode, a second electrode, and a separator between the first and second electrodes;
a case accommodating the electrode assembly;
a cap plate sealing the case and being electrically connected to the second electrode;
a first terminal being electrically connected to the first electrode and being located with a terminal hole of the cap plate; and
a second terminal being directly connected to the cap plate, wherein the second terminal comprises:
a spacing part spaced from the cap plate and a continuous planar exterior surface configured to be entirely connected to a bus bar, wherein the spacing part comprises:
a first part having a first thickness; and
a second part having a second thickness that is less than the first thickness at either side of the first part in a width direction of the cap plate, and having a concave groove at an inner side, and
a connection part connected to the spacing part through a round part and connected to the cap plate, wherein a curvature radius of an outer surface of the round part is less than a first thickness of the connection part, and wherein the concave groove of the spacing part is connected to an inner surface of the connection part.

### Claim 2 (depends on 1)

The rechargeable battery of claim 1, wherein the connection part further comprises a flange bent at a side adjacent to the cap plate and contacting the cap plate.

### Claim 3 (depends on 2)

The rechargeable battery of claim 2, wherein the flange extends in a width direction and in a length direction of the cap plate in the spacing part.

### Claim 4 (depends on 1)

The rechargeable battery of claim 1, wherein the second terminal has a third thickness in a diagonal direction between an inner surface of the concave groove and an outer surface of the round part that is greater than the first thickness.

### Claim 5 (depends on 1)

The rechargeable battery of claim 1, wherein a width of the second part on one side is equal to a sum of a first distance of an outer surface corresponding to the concave groove and the first thickness of the connection part less a curvature radius of an outer surface of the round part.