Polymer batteries having thermal exchange apparatus

• US 20050026014A1
• Filed: 07/31/2003
• Published: 02/03/2005
• Est. Priority Date: 07/31/2003
• Status: Abandoned Application

• Current Assignee: Bathium Canada Inc. (Bolloré SE)
• Original Assignee: Bathium Canada Inc. (Bolloré SE)
• Inventors: Lague, Frederic, Gilbert, Guy, Fogaing, Michael, Geoffroy, Sebastien
• Application Number:
  US10/630,677
• Publication Number:
  US 20050026014A1
• Time in Patent Office: Days
• US Class Current: 429/437
• CPC Class Codes: H01M 10/0413 Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
• CPC Class Codes: H01M 10/0463 Cells or batteries with horizontal or inclined electrodes
• 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 10/0565 Polymeric materials, e.g. gel-type or solid-type
• 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 10/6551 Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
• CPC Class Codes: H01M 10/6563 with forced flow, e.g. by blowers
• CPC Class Codes: H01M 10/6567 Liquids
• CPC Class Codes: H01M 50/00 Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
• CPC Class Codes: H01M 50/103 prismatic or rectangular H01M50/109, H01M50/11 take precedence
• CPC Class Codes: H01M 50/528 Fixed electrical connections, i.e. not intended for disconnection
• 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

A polymer electrochemical generator having a plurality of electrochemical cells, each including at least one current collecting terminals, as well as a resilient heat sink material positioned adjacent and in mechanical contact with the current collecting terminals. The resilient heat sink material is electrically resistive and thermally conductive. A thermally conductive structural housing having walls encloses the plurality of electrochemical cells and the resilient heat sink material. The walls of the structural housing are positioned adjacent the resilient heat sink material and are in thermal contact therewith, for dissipating thermal energy generated by the plurality of electrochemical cells.

Claims

1. A polymer electrochemical generator comprising:

a plurality of electrochemical cells, each comprising a plurality of electrochemical laminates and at least one current collecting terminal, said current collecting terminal having arms adapted to receive said plurality of electrochemical laminates;

a resilient heat sink material positioned adjacent and in mechanical contact with said at least one current collecting terminal, said resilient heat sink material being electrically resistive and thermally conductive; and

a thermally conductive structural housing having walls enclosing said plurality of electrochemical cells and said resilient heat sink material, an inner surface of at least one of said walls being positioned adjacent said resilient heat sink material and in thermal contact with said resilient heat sink material, an outer surface of said at least one of said walls being adapted to dissipate thermal energy generated by said plurality of electrochemical cells.

2. A polymer electrochemical generator as defined in claim 1, further comprising a low friction film positioned between the resilient heat sink material and the inner surface of said at least one of said walls, said film adapted to ease relative movement between said resilient heat sink material and said at least one of said walls.

3. A polymer electrochemical generator as defined in claim 1, wherein said resilient heat sink material conforms at least partially to the contours of said at least one current collecting terminal.

4. A polymer electrochemical generator as defined in claim 1, wherein said resilient heat sink material is separated into a plurality of ribbons extending along the length of said at least one current collecting terminal.

5. A polymer electrochemical generator as defined in claim 4, wherein each one of said plurality of ribbons comprises a band of low friction film positioned between the resilient heat sink material and the inner surface of said at least one of said walls.

6. A polymer electrochemical generator as defined in claim 5, wherein said band of low friction film comprises inward extensions adapted to circumscribe and separate each ribbon of resilient heat sink material from adjacent ribbons.

7. A polymer electrochemical generator as defined in claim 1, further comprising a heat exchange apparatus positioned adjacent said outer surface of said at least one of said walls, said heat exchange apparatus being adapted to transfer thermal energy from said outer surface of said at least one of said walls to a fluid medium.

8. A polymer electrochemical generator as defined in claim 7, wherein said heat exchange apparatus comprises projecting vanes adapted to dissipate thermal energy generated by said electrochemical cells.

9. A polymer electrochemical generator as defined in claim 7, wherein said heat exchange apparatus includes channels provided within said at least one of said walls, wherein heat transfer is accomplished by circulating a coolant fluid in liquid form through said channels.

10. A polymer electrochemical generator as defined in claim 8, wherein air is circulated around said projecting vanes to dissipate thermal energy generated by said electrochemical cells.

11. A polymer electrochemical generator as defined in claim 1, wherein said resilient heat sink material is in the form of pads extending along the length of said plurality of electrochemical cells.

12. A polymer electrochemical generator as defined in claim 1, wherein said resilient heat sink material is a silicone elastomer compound including a thermally conductive ceramic filler.

13. A polymer electrochemical generator as defined in claim 12, wherein said thermally conductive ceramic filler is selected from the group consisting of Beryllium Oxide, Boron Nitride, Alumina and aluminium oxide.

14. A polymer electrochemical generator comprising:

a plurality of electrochemical cells, each comprising a plurality of electrochemical laminates and at least one current collecting terminal, said current collecting terminal having arms adapted to receive said plurality of electrochemical laminates;

resilient heat sink pads positioned adjacent and in mechanical contact with said at least one current collecting terminal, said resilient heat sink pads being electrically resistive and thermally conductive;

a thermally conductive structural housing having walls enclosing said plurality of electrochemical cells and said resilient heat sink material, an inner surface of at least one of said walls being positioned adjacent said resilient heat sink material and in thermal contact with said resilient heat sink material, an outer surface of said at least one of said walls being adapted to dissipate thermal energy generated by said plurality of electrochemical cells;

a low friction film positioned between said resilient heat sink pads and the inner surface of said at least one of said walls, said film adapted to ease relative movement between said resilient heat sink pads and said at least one of said walls; and

a heat exchange apparatus positioned adjacent said outer surface of said at least one of said walls, said heat exchange apparatus being adapted to transfer thermal energy from said outer surface of said at least one of said walls to a fluid medium.