Battery packaging construction for alkali metal multicell batteries

• US 5,422,200 A
• Filed: 07/27/1994
• Issued: 06/06/1995
• Est. Priority Date: 07/27/1994
• Status: Expired due to Fees

• Current Assignee: Lithium Battery, LLC
• Original Assignee: Lithium Battery, LLC
• Inventors: Kejha, Joseph B., Hope, Stephen F.
• Primary Examiner(s): Skapars, Anthony
• Application Number:
  US08/281,014
• Time in Patent Office: 314 Days
• Field of Search: 429/149, 429/152, 429/153, 429/156-160, 429/162, 429/163
• US Class Current: 429/157
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• 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 6/181 with polymeric electrolytes
• CPC Class Codes: H01M 6/46 of flat cells

Abstract

Battery packaging construction for multiple cell alkali metal batteries wherein a plurality of flat or cubic battery cells, which have leads extending therefrom, are individually packaged by using layers of heat sealed or adhesively sealed plastic tape. The cells after assembly are stacked and the leads are electrically connected in series or parallel to terminals, and are secured by a band of tape, or glued together, and then enclosed in a plastic coated metal foil bag, heat sealed and adhesive sealed for moisture-proofing. The bag is placed in a hard box which is then closed to form the completed battery with the terminals extending therefrom. The hard box may optionally be provided with a liner of vibration and impact shock absorbing material.

Claims

1. Battery packaging construction for packaging multicell alkali metal or alkaline earth metal batteries which comprises

a plurality of battery cells in stacked configuration, said cells each having

a base layer of electrically insulating tape,

a battery cell on said base layer,

a top layer of electrically insulating tape on said cell extending over and in contact with said tape base layer,

leads extending from each of said cells between said tapes and therefrom and electrically connected in series or parallel to the leads of another cell,

a moisture proof bag enclosing said stack of cells in sealed relationship,

terminals connected to said cell leads and extending from said bag, and

a hard box enclosing said bag, with said terminals extending from said box.

2. Battery packaging construction as defined in claim 1 in which

said base tape and said top tape layers are of plastic coated with adhesive, which adhesive faces said cell.

3. Battery packaging construction as defined in claim 1 in which

said base tape and said top tape layers are of heat sealable plastic.

4. Battery packaging construction as defined in claim 2 in which

said adhesive and said plastic are anhydrous.

5. Battery packaging construction as defined in claim 3 in which

said plastic is anhydrous.

6. Battery packaging construction as defined in claim 1 in which

said leads and said terminals are electrically connected by cold soldering.

7. Battery packaging construction as defined in claim 1 in which

said leads and said terminals are electrically connected by electrically conductive adhesive transfer tape.

8. Battery packaging construction as defined in claim 6 in which

said cold soldering material is lithium.

9. Battery packaging construction as defined in claim 1 in which

said base layer and/or said top layers of electrically insulated tapes are continuous and used as a carrier of individual cells during mass production.

10. Battery packaging construction as defined in claim 1 in which

said hard box is lined with a layer of vibration, and shock absorbing material.

11. Battery packaging construction as defined in claim 1 in which

said plurality of cells are retained in stacked configuration by layers of adhesive between said cells.

12. Battery packaging construction as defined in claim 1 in which

said plurality of cells are retained in stacked configuration by at least one band of tape.

13. Battery packaging construction as defined in claim 1 in which

said leads and said terminals are electrically connected by an electrically conductive adhesive.

14. Battery packaging construction as defined in claim 1 in which

said terminals and said leads are held together and electrically connected by a length of tape.

15. Battery packaging construction as defined in claim 1 in which

said leads are of nickel foil.