RECHARGEABLE BATTERY

• US 20110136004A1
• Filed: 10/21/2010
• Published: 06/09/2011
• Est. Priority Date: 12/07/2009
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Original Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Inventors: Kim, Dongwook, Moon, Jongseok, Yoo, Seokyoon, Lee, Chiyoung, Kwak, Yoontai, Kim, Yongsam
• Application Number:
  US12/909,799
• Publication Number:
  US 20110136004A1
• Time in Patent Office: Days
• US Class Current: 429/186
• 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 50/103 prismatic or rectangular H01M50/109, H01M50/11 take precedence
• CPC Class Codes: H01M 50/533 characterised by the shape of the leads or tabs
• CPC Class Codes: H01M 50/534 characterised by the material of the leads or tabs
• CPC Class Codes: H01M 50/536 characterised by the method of fixing the leads to the electrodes, e.g. by welding
• CPC Class Codes: H01M 50/54 Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
• 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 secondary battery includes a case; an electrode assembly housed in the case, wherein the electrode assembly includes a first electrode, a second electrode and a separator between the first and second electrodes, wherein the first electrode has a coating portion coated with an active material and a non-coating portion absent the active material; and a support plate between the electrode assembly and the case, the support plate including a first conductive plate having at least one first tab, wherein the first conductive plate is electrically coupled to the electrode assembly by the at least one first tab such that the at least one first tab covers less than an entire section of the non-coating portion.

Claims

1. A rechargeable battery comprising:

a case;

an electrode assembly housed in the case, wherein the electrode assembly comprises a first electrode, a second electrode and a separator between the first and second electrodes, wherein the first electrode has a coating portion coated with an active material and a non-coating portion absent the active material; and

a support plate between the electrode assembly and the case, the support plate comprising;

a first conductive plate comprising at least one first tab, wherein the first conductive plate is electrically coupled to the electrode assembly by the at least one first tab such that the at least one first tab covers less than an entire section of the non-coating portion.

2. The rechargeable battery of claim 1, further comprising a second conductive plate having at least one second tab, where the second conductive plate is electrically coupled to the electrode assembly by the at least one second tab.

3. The rechargeable battery of claim 2, further comprising an insulation plate between the first conductive plate and the second conductive plate.

4. The rechargeable battery of claim 1, wherein the at least one first tab comprises two first tabs spaced from each other.

5. The rechargeable battery of claim 1, wherein the non-coating portion is welded to the first conductive plate.

6. The rechargeable battery of claim 1, wherein the first conductive plate and the non-coating portion comprise the same material.

7. The rechargeable battery of claim 1, wherein the first conductive plate has a first angled section generally corresponding to an angled region of the first electrode, and a first substantially planar section generally corresponding to a substantially planar surface of the first electrode.

8. The rechargeable battery of claim 7, wherein the at least one first tab extends from the first angled section.

9. The rechargeable battery of claim 2, wherein the second conductive plate has a second angled section generally corresponding to an angled region of the second electrode, and a second substantially planar section generally corresponding to a substantially planar surface of the second electrode.

10. The rechargeable battery of claim 2, wherein the second electrode has a coating portion coated with an active material and a non-coating portion absent the active material and wherein the at least one second tab comprises two second tabs spaced from each other such that a portion of the non-coating portion is exposed between the two second tabs.

11. The rechargeable battery of claim 1, further comprising a first electrode terminal electrically coupled to the electrode assembly, the first electrode terminal comprising a welding portion that extends into the electrode assembly.

12. The rechargeable battery of claim 1, wherein the support plate comprises metal.

13. The rechargeable battery of claim 12, wherein the metal comprises copper or aluminum.

14. The rechargeable battery of claim 1, wherein the first conductive plate and the second conductive plate comprise different materials.

15. The rechargeable battery of claim 14, wherein the first conductive plate comprises copper and the second conductive plate comprises aluminum.

16. The rechargeable battery of claim 1, further comprising an additional support plate electrically coupled to the electrode assembly.

17. The rechargeable battery of claim 1, further comprising an additional electrode assembly electrically coupled to the support plate.