Electrical battery comprising flexible generating elements and a system for the mechanical and thermal conditioning of said elements

• US 8,404,375 B2
• Filed: 04/08/2009
• Issued: 03/26/2013
• Est. Priority Date: 04/08/2008
• Status: Expired due to Fees

• Current Assignee: Dow Kokam France SAS
• Original Assignee: Dow Kokam France SAS
• Inventors: Gaben, Fabien
• Primary Examiner(s): Mayes, Melvin C
• Assistant Examiner(s): Slifka, Colin W
• Application Number:
  US12/420,162
• Publication Number:
  US 20090253026A1
• Time in Patent Office: 1,448 Days
• Field of Search: None
• US Class Current: 429/120
• CPC Class Codes: B60R 16/04 Arrangement of batteries
• CPC Class Codes: H01M 10/4235 Safety or regulating additives or arrangements in electrodes, separators or electrolyte H01M10/4242 takes precedence
• CPC Class Codes: H01M 10/52 Removing gases inside the secondary cell, e.g. by absorption vent plugs or other mechanical arrangements for facilitating escape of gases H01M50/30
• 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 10/6557 arranged between the cells
• CPC Class Codes: H01M 10/6561 Gases
• CPC Class Codes: H01M 10/6567 Liquids
• CPC Class Codes: H01M 10/6569 Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation heat pipes H01M10/6552
• CPC Class Codes: H01M 10/658 by thermal insulation or shielding
• CPC Class Codes: H01M 50/121 Organic material
• CPC Class Codes: H01M 50/124 having a layered structure
• CPC Class Codes: H01M 50/1245 characterised by the external coating on the casing
• CPC Class Codes: H01M 50/136 Flexibility or foldability
• CPC Class Codes: H01M 50/211 adapted for pouch cells
• CPC Class Codes: H01M 50/24 adapted for protecting batteries from their environment, e.g. from corrosion thermal insulation H01M10/658
• CPC Class Codes: H01M 50/258 Modular batteries; Casings provided with means for assembling
• CPC Class Codes: H01M 50/291 characterised by their shape
• CPC Class Codes: H01M 50/3425 in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
• 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

An electrical battery includes a plurality of electrical energy generating elements formed by at least one electrochemical cell that is packaged in a flexible sealed envelope, and a system for the mechanical and thermal conditioning of the elements. The conditioning system forms a structural body made from thermally conductive material. The body has two longitudinal members and a plurality of cross-members connecting the longitudinal members so as to form between the cross-members housings in which respectively a generating element is disposed. The body includes a circulation path for a thermal conditioning fluid. The path has two channels, respectively upstream and downstream, that are formed respectively in a longitudinal member and passages formed in each of the cross-members. The passages are in fluid communication on each side with respectively the upstream channel and the downstream channel.

Claims

1. An electrical battery comprising:

a first frame defining an upstream channel;

a second frame defining a downstream channel;

a plurality of flat cross-members each extending between said first frame and said second frame and each in fluid communication with said upstream channel and said downstream channel substantially along an entire length of said upstream channel and said downstream channel, said plurality of cross-members being spaced apart from one another in a flow direction along said upstream channel and said downstream channel to define a plurality of housings between adjacent cross-members; and

a plurality of electrical energy generating elements disposed within respective ones of said plurality of housings.

2. The electrical battery according to claim 1, wherein said generating elements are adhesively bonded to said cross-members.

3. The electrical battery according to claim 1, wherein said first frame includes a plurality of first frames cooperating to form said upstream channel and said second frame includes a plurality of second frames cooperating to form said downstream channel.

4. The electrical battery according to claim 3, wherein said plurality of first frames each include a first aperture formed therethrough and said plurality of second frames each include a second aperture formed therethrough.

5. The electrical battery according to claim 4, wherein said first apertures of adjacent first frames cooperate to form said upstream channel and said second apertures of adjacent second frames cooperate to form said downstream channel.

6. The electrical battery according to claim 1, wherein said first frame includes a male portion for attachment to an adjacent first frame and a female portion for attachment to another adjacent first frame and wherein said second frame includes a male portion for attachment to an adjacent second frame and a female portion for attachment to another adjacent second frame.

7. The electrical battery according to claim 1, wherein said electrical energy generating elements include a mechanically weakened part that forms a rupture zone in the event of overpressure inside said electrical energy generating elements.

8. The electrical battery according to claim 7, wherein said rupture zone is in communication with a discharge channel.

9. The electrical battery according to claim 1, further comprising a structural matrix made from polymer resin that at least partially fills said housings in order to clad said generating elements.

10. The electrical battery according to claim 1, further comprising a means for supplying fluid to said upstream channel and means for discharging fluid in said downstream channel after said fluid passes through said cross-members.

11. The electrical battery according to claim 1, wherein said cross-members each include passages extending between and in fluid communication with said upstream channel and said downstream channel, said passages being supplied in parallel by said upstream channel.

12. An electrical battery comprising:

a structural body including a plurality of modules, an upstream channel extending along a first longitudinal axis of said structural body, a downstream channel extending along a second longitudinal axis of said structural body and substantially parallel to said first longitudinal axis, and at least one housing disposed between adjacent ones of said modules, said modules each comprising;

a first frame having a first aperture formed therethrough, said first aperture cooperating with a first aperture of an adjacent module to form said upstream channel;

a second frame having a second aperture formed therethrough, said second aperture cooperating with a second aperture of said adjacent module to form said downstream channel; and

a cross-member extending between said first frame and said second frame, said cross-member cooperating with a cross-member of said adjacent module to form said at least one housing.

13. The electrical battery of claim 12, wherein said cross-member includes at least one passage.

14. The electrical battery of claim 13, wherein said at least one passage is in fluid communication with said first aperture and said second aperture.

15. The electrical battery of claim 13, further comprising a rib formed adjacent to said at least one passage and extending between said first frame and said second frame.

16. The electrical battery of claim 15, wherein said at least one passage includes at least two passages, said rib disposed between said at least two passages.

17. The electrical battery of claim 12, further comprising an electrical energy generating element disposed within said at least one housing.

18. The electrical battery of claim 17, wherein said electrical energy generating element includes an electrochemical cell.

19. The electrical battery of claim 18, wherein said electrochemical cell is packaged in a flexible, sealed envelope.

20. The electrical battery of claim 17, further comprising a structural matrix at least partially filling said at least one housing.

21. The electrical battery of claim 20, wherein said structural matrix retains said electrical generating element within said at least one housing.

22. The electrical battery of claim 20, wherein said structural matrix is thermally conductive.

23. The electrical battery of claim 20, wherein said structural matrix is a polymer resin.

24. The electrical battery of claim 12, wherein said first frame and said second frame are matingly attached to a first frame and a second frame, respectively, of an adjacent module.

25. The electrical battery of claim 12, wherein at least one of said first frame and said second frame includes a male portion and a female portion for respective attachment to a female portion and a male portion of adjacent modules.

26. The electrical battery of claim 12, wherein each of said first frame and said second frame includes a male portion and a female portion for respective attachment to a female portion and a male portion of adjacent modules.

27. An electrical battery comprising:

a first frame defining an upstream channel;

a second frame defining a downstream channel;

a plurality of cross-members extending between said first frame and said second frame and each in fluid communication with said upstream channel and said downstream channel;

a plurality of housings formed between adjacent cross-members; and

a plurality of electrical energy generating elements disposed within respective ones of said plurality of housings, said electrical energy generating elements retained within said housings via a structural matrix.

28. The electrical battery according to claim 27, wherein said electrical energy generating elements are bonded to one of said cross-members along a first surface of said electrical energy generating elements within each of said housings.

29. The electrical battery according to claim 28, wherein said electrical energy generating elements are bonded to one of said cross-members along said first surface via an adhesive.

30. The electrical battery according to claim 29, wherein said adhesive is a thermal adhesive.

31. The electrical battery according to claim 27, wherein said structural matrix is thermally conductive.

32. The electrical battery according to claim 27, wherein said structural matrix is a polymer resin.

33. The electrical battery according to claim 27, wherein said structural matrix is formed from an electrically insulating material.

34. The electrical battery according to claim 27, further comprising a gap formed between said electrical energy generating elements and said housing, said structural matrix filling said gap.

35. The electrical battery according to claim 27, wherein said first frame includes a plurality of first frames cooperating to form said upstream channel and said second frame includes a plurality of second frames cooperating to form said downstream channel.