Rechargeable battery

Patent metadata

Field	Value
Publication number	US-9312565-B2
Application number	US-201113244261-A
Country	US
Kind code	B2
Filing date	Sep 23, 2011
Priority date	Jun 8, 2011
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

A rechargeable battery includes an electrode assembly having a first electrode and a second electrode; a case housing the electrode assembly; a cap plate coupled to the case; a short-circuit tab electrically coupled to the second electrode and having an opening; a short-circuit member electrically coupled to the first electrode and configured to be moved by a change in pressure to be electrically coupled to the short-circuit tab; and a cover covering the opening in the short-circuit tab.

First claim

What is claimed is:

1. A rechargeable battery comprising:
an electrode assembly comprising a first electrode and a second electrode;
a case housing the electrode assembly;
a cap plate coupled to the case;
a short-circuit tab electrically coupled to the second electrode, the short-circuit tab having an opening and a protrusion extending towards the electrode assembly;
a short-circuit member electrically coupled to the first electrode and configured to be moved by a change in pressure to be electrically coupled to the short-circuit tab;
a cover covering the opening in the short-circuit tab; and
an upper insulating member located between the short-circuit tab and the cap plate, a first fixing portion configured to be coupled to the upper insulating member on a sidewall of the cover, and a second fixing portion configured to be coupled to the first fixing portion on the upper insulating member.

2. The rechargeable battery of claim 1 , wherein the first fixing portion comprises protrusions and wherein the second fixing portion comprises grooves.

3. The rechargeable battery of claim 1 , further comprising a provisional combining portion configured to be coupled to the first fixing portion in an upper portion of the second fixing portion.

4. The rechargeable battery of claim 1 , further comprising a wedge-shaped first protrusion spaced from the first fixing portion on the cover, and a first groove accommodating the first fixing portion on an upper insulating member.

5. A rechargeable battery comprising:
an electrode assembly comprising a first electrode and a second electrode;
a case housing the electrode assembly;
a cap plate coupled to the case;
a short-circuit tab electrically coupled to the second electrode, the short-circuit tab having an opening and a protrusion extending towards the electrode assembly;
a short-circuit member electrically coupled to the first electrode and configured to be moved by a change in pressure to be electrically coupled to the short-circuit tab;
a cover covering the opening in the short-circuit tab; and a groove on a top surface of the short-circuit tab, a first protrusion on the cover and protruding towards the short-circuit tab, and an upper sealing member located between the groove and the first protrusion.

6. The rechargeable battery of claim 5 , further comprising an opening extending to a lower portion of the cover in the groove and a second protrusion protruding towards the lower portion and within the opening on the first protrusion.

7. The rechargeable battery of claim 5 , further comprising a short-circuit opening within the short-circuit member in the cap plate, a protrusion protruding towards the short-circuit member on the short-circuit tab, and a lower sealing member located between an internal side of the short-circuit opening and an external side of the protrusion.

Assignees

• Kim Duk-Jung
• Samsung Sdi Co Ltd
• Bosch Gmbh Robert

Inventors

• Kim Duk-Jung

Classifications

• H01M2200/30

  Preventing polarity reversal · CPC title

• H01M2200/20

  Pressure-sensitive devices · CPC title

• H01M50/531 Primary

  Electrode connections inside a battery casing · CPC title

• H01M50/183

  Sealing members · CPC title

• H01M10/0525 Primary

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title