Battery pack

• US 9,356,266 B2
• Filed: 09/12/2013
• Issued: 05/31/2016
• Est. Priority Date: 12/21/2012
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Wang, Han-Jun
• Primary Examiner(s): Cantelmo, Gregg
• Application Number:
  US14/025,757
• Publication Number:
  US 20140178716A1
• Time in Patent Office: 992 Days
• Field of Search: 429/100, 429/151, 429/159, 429/163, 429/175, 429/176
• US Class Current: 1/1
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• CPC Class Codes: H01M 50/262 with fastening means, e.g. locks
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A battery pack includes a battery cell; a case comprising a first case and a second case coupled together and accommodating the battery cell, wherein the first case includes a first rib extending circumferentially around the first case and generally defining a battery cell accommodation space for the battery cell around an interior of the first rib, the first rib having a ridged section comprising alternating thick portions and thin portions.

Claims

1. A battery pack comprising:

a battery cell;

a case comprising a first case and a second case coupled together and accommodating the battery cell, wherein the first case comprises;

a first base plate;

a first rib extending circumferentially around the first base plate and protruding in a height direction away from the first base plate to generally define battery cell accommodation space for the battery cell around an interior of the first rib, the first rib having a ridged section comprising alternating thick portions and thin portions with respect to a thickness direction that is perpendicular to the height direction of the first rib to prevent contraction and deformation of the first rib; and

a protection circuit module, wherein the first rib further defines a protection circuit module accommodation space.

2. The battery pack of claim 1, further comprising a flange unit on an exterior of the first rib, wherein the ridged section is located on the first rib adjacent to the flange unit.

3. The battery pack of claim 2, wherein the flange unit comprises a boss configured to receive an external device.

4. The battery pack of claim 2, wherein when the first case and the second case are coupled together, the flanged portion is exposed.

5. The battery pack of claim 1, wherein the ridged section extends along an entirety of the first rib.

6. The battery pack of claim 1, wherein the ridged section is on a corner of the first rib.

7. The battery pack of claim 1, wherein the first case comprises a first base plate, and wherein the first rib extends away from the first base plate.

8. The battery pack of claim 2, wherein the flange unit is on a corner of the first case.

9. The battery pack of claim 2, wherein the flange unit comprises a first flange unit and a second flange unit spaced from each other.

10. The battery pack of claim 9, wherein the protection circuit module is between the first flange unit and the second flange unit.

11. The battery pack of claim 1, wherein the ridged section comprises a first ridged section and a second ridged section and wherein the first rib has a flat section between the first ridged section and the second ridged section.

12. The battery pack of claim 11, wherein the flat section has an opening configured to receive a fastener to couple the first case to the second case.

13. The battery pack of claim 12, further comprising a connecting unit offset from the first rib and wherein the opening is on the connecting unit.

14. The battery pack of claim 11, wherein a thickness of the flat section and a thickness of the thick portions are substantially identical.

15. The battery pack of claim 1, wherein the ridged section comprises a plurality of ridged sections spaced from each other.

16. The battery pack of claim 1, wherein a thickness of the thick portions and thin portions is equal to or less than a thickness of the first base plate.

17. The battery pack of claim 1, wherein the battery pack comprises a plurality of battery cells that are stacked to form a stepped configuration.

18. The battery pack of claim 17, wherein second case comprises a second base plate having a stepped configuration to accommodate the stepped configuration of the battery cells.

19. The battery pack of claim 1, wherein the thick portions protrude toward the battery cell relative to the thin portions.