RECHARGEABLE BATTERY

• US 20130084471A1
• Filed: 01/05/2012
• Published: 04/04/2013
• Est. Priority Date: 09/29/2011
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Original Assignee: Min-Yeol Han
• Inventors: Byun, Sang-Won, Yoon, Hae-Kwon, HAN, Min-Yeol
• Granted Patent: US 8,940,420 B2
• Time in Patent Office: Days
• US Class Current: 429/7
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 50/147 Lids or covers
• CPC Class Codes: H01M 50/561 Hollow metallic terminals, e.g. terminal bushings
• CPC Class Codes: H01M 50/581 in response to temperature
• 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
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A battery includes an electrode assembly including a first electrode and a second electrode, a first electrode terminal, and a first current collecting member electrically connecting the first electrode terminal and a first electrode uncoated region of the first electrode. The first current collecting member includes a first terminal connection region, a side plate extending downwardly from the first terminal connection region towards the first electrode uncoated region, a first current collecting piece extending from the side plate, the first current collecting piece being in contact with the first electrode uncoated region, and a fuse between the side plate and the first current collecting piece.

Claims

1. A battery, comprising:

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

a first electrode terminal; and

a first current collecting member electrically connecting the first electrode terminal and a first electrode uncoated region of the first electrode, the first current collecting member including

a first terminal connection region,

a side plate extending downwardly from the first terminal connection region towards the first electrode uncoated region,

a first current collecting piece extending from the side plate, the first current collecting piece being in contact with the first electrode uncoated region, and

a fuse between the side plate and the first current collecting piece.

2. The battery as claimed in claim 1, wherein the first terminal connection region, the side plate, the first current collecting piece, and the fuse are formed of a same material.

3. The battery as claimed in claim 2, wherein the first terminal connection region, the side plate, the first current collecting piece, and the fuse are integral with one another.

4. The battery as claimed in claim 2, wherein the fuse has a smaller sectional area than adjacent portions of the side plate and the first current collecting piece.

5. The battery as claimed in claim 1, wherein at least two first current collecting pieces extend laterally from the side plate.

6. The battery as claimed in claim 1, further comprising a plurality of electrode assemblies and a corresponding plurality of first current collecting pieces, the fuse including first and second fuse regions between the side plate and two first current collecting pieces of the plurality of first current collecting pieces, respectively.

7. The battery as claimed in claim 6, wherein the first and second fuse regions extend laterally between the side plate and the two first current collecting pieces.

8. The battery as claimed in claim 7, further comprising a third fuse region extending vertically from the side plate, the third fuse region being between the side plate and first current collecting pieces other than the two first current collecting pieces.

9. The battery as claimed in claim 8, wherein the third fuse region contacts a connection region extending laterally between first current collecting pieces other than the two first current collecting pieces.

10. The battery as claimed in claim 7, further comprising connection regions connecting the two first current collecting pieces to adjacent first current collecting pieces, respectively.

11. The battery as claimed in claim 7, further comprising:

a connection region extending vertically from the side plate; and

a third fuse region extending laterally from the connection region, the third fuse region being between the connection region and a third first current collecting piece.

12. The battery as claimed in claim 11, further comprising:

a fourth fuse region extending laterally from the connection region, on a side opposite the third fuse region, the fourth fuse region being between the connection region and a fourth first current collecting piece.

13. The battery as claimed in claim 6, wherein the plurality of first current collecting pieces is two current collecting pieces.

14. The battery as claimed in claim 5, wherein the fuse includes a fuse region is in an electrical path between each current collecting piece and the side plate.

15. The battery as claimed in claim 1, further comprising a short circuit member connected to the first electrode terminal.

16. The battery as claimed in claim 1, wherein the first current collecting piece is welded to the first electrode uncoated region.

17. The battery as claimed in claim 1, further comprising a blocking member made of an electrically insulating material and at least partially surrounding the fuse.

18. The battery as claimed in claim 17, wherein the blocking member includes a base region on a side of the fuse opposite the electrode uncoated region and protrusions between the first terminal connection region and the first current collecting piece.

19. The battery as claimed in claim 1, further comprising:

a second electrode terminal;

a second current collecting member electrically connecting the second electrode terminal and a second electrode uncoated region of the second electrode; and

safety members on lateral sides of the electrode assembly and electrically connected to the second electrode.

20. The battery as claimed in claim 19, wherein each safety member includes:

a conductive plate;

an insulating region separating the conductive plate and the electrode assembly; and

an electrode connection region electrically connecting the conductive plate and the second electrode, wherein the electrode connection region is welded to the second electrode.