Battery pack

Patent metadata

Field	Value
Publication number	US-9368769-B2
Application number	US-88926610-A
Country	US
Kind code	B2
Filing date	Sep 23, 2010
Priority date	May 31, 2010
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

A battery pack including a frame integrated with a reinforcement member and a supporting member, thereby realizing a compact and lightweight dimension. The battery pack includes a plurality of battery cells stacked on top of each other, a frame including a supporting member covering the plurality of battery cells and a reinforcement member formed inside the supporting member, and an end plate disposed at the exterior of the plurality of battery cells and coupled to the frame.

First claim

What is claimed is:

1. A battery pack comprising:
a plurality of battery cells stacked together;
a frame comprising a supporting member covering the battery cells and a reinforcement member within and directly contacting the supporting member, wherein the frame extends continuously along a length of all of the battery cells; and
an end plate on the battery cells and coupled to the frame,

wherein the supporting member comprises:
a bottom portion covering one side of each of the plurality of battery cells; and
a sidewall portion bent and extending from at least two sides of the bottom portion and covering two sides of each of the battery cells, wherein a part of the reinforcement member is entirely within the sidewall portion and extends along an entire length of the supporting member.

2. The battery pack of claim 1 , wherein the supporting member and the reinforcement member comprise different materials.

3. The battery pack of claim 1 , wherein the supporting member and the reinforcement member are insert molded to each other.

4. The battery pack of claim 1 , wherein the supporting member comprises an insulating resin.

5. The battery pack of claim 1 , wherein the reinforcement member comprises a metallic material.

6. The battery pack of claim 1 , wherein a portion of the reinforcement member protrudes from the supporting member and extends through the end plate.

7. The battery pack of claim 6 , further comprising a nut on an exterior side of the end plate and coupled to the reinforcement member.

8. The battery pack of claim 1 , wherein the reinforcement member is located in the sidewall portion.

9. The battery pack of claim 1 , wherein the reinforcement member comprises:
a base portion comprising a bar and extending in a direction generally parallel to a direction in which the battery cells are stacked;
an extending portion extending from the base portion and protruding from the supporting member and passing through the end plate; and
a screw thread on the extending portion.

10. The battery pack of claim 1 , wherein the reinforcement member includes a plurality of coupling grooves and wherein the plurality of coupling grooves contain the supporting member.

11. The battery pack of claim 1 , wherein the reinforcement member includes a plurality of coupling protrusions protruding from an outer surface of the reinforcement member.

12. The battery pack of claim 1 , wherein the end plate comprises:
a plate portion facing the plurality of battery cells and an opening, wherein the reinforcement member extends through the opening; and
a bent portion bent from and extending from two sides of the plate portion.

13. The battery pack of claim 1 , further comprising a connection member on the reinforcement member, wherein the connection member is coupled to the end plate.

14. The battery pack of claim 13 , wherein the connection member is a bolt passing through the end plate, and wherein the battery pack further comprises a nut coupled to the connection member.

15. The battery pack of claim 13 , wherein the connection member is a nut, and wherein the battery pack further comprises a bolt extending through the end plate and coupled to connection member.

16. The battery pack of claim 13 , wherein the reinforcement member is a mesh type.

17. The battery pack of claim 16 , wherein the reinforcement member comprises a first metal line and a second metal line.

18. The battery pack of claim 1 , further comprising an insulator located between two adjacent battery cells among the plurality of battery cells.

Assignees

• Kim Taeyong
• Samsung Sdi Co Ltd
• Bosch Gmbh Robert

Inventors

• Kim Taeyong

Classifications

• H01M10/0445 Primary

  Multimode batteries, e.g. containing auxiliary cells or electrodes switchable in parallel or series connections · CPC title

• H01M50/103

  prismatic or rectangular (H01M50/109, H01M50/11 take precedence) · CPC title

• H01M50/209 Primary

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title

• H01M2/0207

  Electricity · mapped topic

• H01M2/1077 Primary

  Electricity · mapped topic