RECHARGABLE BATTERY HAVING A FUSE

• US 20150072186A1
• Filed: 01/08/2014
• Published: 03/12/2015
• Est. Priority Date: 09/10/2013
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: GUEN, Min-Hyung
• Granted Patent: US 9,455,479 B2
• Time in Patent Office: Days
• US Class Current: 429/61
• CPC Class Codes: H01M 10/0413 Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
• CPC Class Codes: H01M 10/058 Construction or manufacture
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 2200/103 Fuse
• CPC Class Codes: H01M 50/531 Electrode connections inside a battery casing
• CPC Class Codes: H01M 50/538 Connection of several leads or tabs of wound or folded electrode stacks
• CPC Class Codes: H01M 50/583 in response to current, e.g. fuses
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A rechargeable battery includes an electrode assembly including a first electrode and a second electrode, a case configured to store the electrode assembly, a cap plate attached to the case, a terminal electrically connected to the first electrode and protruding out of the cap plate, a current collecting member connecting the first electrode with the terminal, the current collecting member including a fuse portion, a lower insulating member between the cap plate and the current collecting member, and a barrier between the lower insulating member and the fuse portion.

Claims

1. A rechargeable battery, comprising:

an electrode assembly including a first electrode and a second electrode;

a case configured to store the electrode assembly;

a cap plate attached to the case;

a terminal electrically connected to the first electrode and protruding out of the cap plate;

a current collecting member connecting the first electrode with the terminal, the current collecting member including a fuse portion;

a lower insulating member between the cap plate and the current collecting member; and

a barrier between the lower insulating member and the fuse portion.

2. The rechargeable battery as claimed in claim 1, wherein the current collecting member further comprises a fuse hole, the barrier extending in a circumferential direction of the fuse hole.

3. The rechargeable battery as claimed in claim 2, wherein the fuse portion is at two lateral ends of the fuse hole.

4. The rechargeable battery as claimed in claim 2, wherein the current collecting member further comprises a supporting member, the supporting member overlapping a lower part of the fuse hole.

5. The rechargeable battery as claimed in claim 4, wherein the supporting member encloses the current collecting member, the supporting member including an opening overlapping and in fluid communication with an upper part of the fuse hole.

6. The rechargeable battery as claimed in claim 5, wherein the current collecting member further comprises:

an upper connecting portion bonded to the terminal; and

a lower connecting portion bent at the upper connecting portion and extending downwardly from the upper connecting portion, the supporting member enclosing a connecting part of the upper connecting portion and the lower connecting portion.

7. The rechargeable battery as claimed in claim 4, wherein the barrier protrudes toward the lower insulating member from the supporting member.

8. The rechargeable battery as claimed in claim 4, wherein the barrier protrudes toward the current collecting member from the lower insulating member.

9. The rechargeable battery as claimed in claim 8, wherein the lower insulating member includes:

an upper plate;

a lateral side protruding from a lateral end of the upper plate, the lateral side enclosing a lower flange portion of the terminal and a portion of the current collecting member; and

a stepped portion above the supporting member, the stepped portion protruding down from the upper plate.

10. The rechargeable battery as claimed in claim 9, wherein the barrier protrudes from the stepped portion, the stepped portion being disposed apart from the supporting member.

11. The rechargeable battery as claimed in claim 4, wherein the supporting member includes a first groove, the barrier being inserted in the first groove.

12. The rechargeable battery as claimed in claim 11, wherein a lower part of the barrier is inserted in the first groove, and the lower insulating member includes a second groove in which an upper part of the barrier is inserted.