Battery pack

• US 20110305935A1
• Filed: 01/12/2011
• Published: 12/15/2011
• Est. Priority Date: 06/10/2010
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Original Assignee: Robert Bosch GmbH, Samsung SDI Company Limited
• Inventors: Yoon, Ji-Hyoung
• Application Number:
  US12/929,281
• Publication Number:
  US 20110305935A1
• Time in Patent Office: Days
• US Class Current: 429/120
• CPC Class Codes: B60L 50/64 Constructional details of batteries specially adapted for electric vehicles
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/647 Prismatic or flat cells, e.g. pouch cells
• CPC Class Codes: H01M 10/6554 Rods or plates
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• CPC Class Codes: H01M 50/503 characterised by the shape of the interconnectors
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A battery pack includes a plurality of battery cells including a plurality of terminals, and a cooling member including a plurality of contact portions contacting the terminals.

Claims

1. A battery pack, comprising:

a plurality of battery cells including a plurality of terminals; and

a cooling member including a plurality of contact portions contacting the terminals.

2. The battery pack as claimed in claim 1, wherein the contact portions are thermally conductive.

3. The battery pack as claimed in claim 1, wherein the plurality of contact portions is electrically isolated from the terminals.

4. The battery pack as claimed in claim 1, wherein:

the contact portions include respective accommodation holes in an inner portion thereof, the accommodation holes being configured to accommodate the terminals, and

the terminals are inserted into the respective accommodation holes.

5. The battery pack as claimed in claim 1, wherein the cooling member includes a thermally conductive material.

6. The battery pack as claimed in claim 1, wherein:

the contact portions are at a first surface of the cooling member in positions corresponding to the terminals, and

a second surface of the cooling member opposite to the first surface is flat.

7. The battery pack as claimed in claim 6, wherein the cooling member is formed of a metal, an external surface of the metal being surrounded by an oxide layer at the contact portions.

8. The battery pack as claimed in claim 1, wherein:

the contact portions are at a first surface of the cooling member in positions corresponding to the terminals, and

a plurality of fluid channels are disposed at a second surface of the cooling member opposite to the first surface.

9. The battery pack as claimed in claim 8, wherein the fluid channels correspond to the contact portions.

10. The battery pack as claimed in claim 8, wherein the fluid channels have a surface exposed to an ambient atmosphere.

11. The battery pack as claimed in claim 8, wherein the cooling member is formed of a metal, an external surface of the metal being surrounded by an oxide layer at the contact portions.

12. The battery pack as claimed in claim 1, wherein the cooling member includes:

a case portion formed of a thermally conductive material, the case portion including a heat absorption portion; and

a plurality of contact portions on a surface of the case portion in positions corresponding to the terminals.

13. The battery pack as claimed in claim 12, wherein the heat absorption portion is hollow such that air flows through the heat absorption portion, the battery pack further comprising:

an inflow pipe, the inflow pipe being disposed at a first end of the heat absorption portion so as to allow the air from outside the heat absorption portion to flow through the heat absorption portion; and

an outflow pipe, the outflow pipe being disposed at a second end of the heat absorption portion so as to discharge the air of the heat absorption portion to the outside.

14. The battery pack as claimed in claim 12, wherein the heat absorption portion is filled with a heat-absorbing material that absorbs heat.

15. The battery pack as claimed in claim 14, wherein the heat-absorbing material includes silicone oil.

16. The battery pack as claimed in claim 14, wherein the heat-absorbing material includes a phase change material.

17. The battery pack as claimed in claim 12, wherein a cross-section of the contact portions farther from the terminals is larger than a cross-section of the contact portions nearer to the terminals.

18. The battery pack as claimed in claim 12, wherein at least a portion of an upper surface and a lateral surface of the contact portions is exposed to the heat absorption portion.

19. The battery pack as claimed in claim 12, wherein the case portion and the contact portions are formed as a single unit.

20. The battery pack as claimed in claim 19, wherein the case portion and the contact portions include a thermally conductive plastic.