Plural cell battery structure

• US 4,287,273 A
• Filed: 04/03/1980
• Issued: 09/01/1981
• Est. Priority Date: 04/03/1980
• Status: Expired due to Term

• Current Assignee: Mine Safety Appliances Company (MSA Safety, Inc.)
• Original Assignee: Catalyst Research Corporation
• Inventors: Harney, David E., O'Boyle, Matthew, Harney, Marilyn J.
• Primary Examiner(s): Skapars, Anthony
• Application Number:
  US06/136,935
• Time in Patent Office: 516 Days
• Field of Search: 429/153, 429/152, 429/154, 429/142, 429/160, 429/162, 429/112, 429/115, 429/212, 429/213, 429/161, 429/178
• US Class Current: 429/153
• CPC Class Codes: H01M 50/50 Current conducting connections for cells or batteries
• CPC Class Codes: H01M 6/46 of flat cells

Abstract

A battery structure using a plurality of cells in stacked array wherein each cell comprises an anode having a centrally positioned opening and flange positioned about the periphery of the opening for contact with the periphery of the opening of an adjacent anode. Each cell includes a pelletized depolarizer material that extends beyond the perimeter of the anode but coextensive with the anode flange. An outer encasement member receives the stacked array so that the depolarizer pellets are in electrical contact with the inner surface of the encasement. The encasement means includes a top member having an opening located to align with the openings in the anode and anode collector positioned through said opening in the top member and electrically insulated therefrom and in electrical contact with each of said anode flanges.

Claims

1. A primary battery comprising:

A. an electrically conductive encasement means having a base portion, said base portion including a first insulating means;

B. a stacked array of cells extending from said first insulating means to the top of the encasement means, each of said cells consisting essentially of an anode and a pelletized depolarizer, said depolarizer being in direct contact without any separating layer, except an in situ formed electrolytic layer, with said anode and the anode of an adjacent cell, said anode and depolarizer of each cell being relatively positioned so that said cell is in electrical contact with the inner surface of said encasement means through said depolarizer of each cell;

C. a second insulator means positioned substantially coextensively over said array;

D. means for electrically connecting each of said anodes in parallel; and

E. an electrically conductive top means sealingly attached to said encasement means and including a terminal electrically insulated therefrom, said terminal being electrically connected to said means for electrically connecting each of said anodes.

2. A primary battery as set forth in claim 1 wherein each cell comprises an anode having an opening therethrough;

said pelletized depolarizer including an opening concentrically aligned with but larger than the opening in the anode; and

said means for electrically connecting each of said means for electrically connecting each of said anodes comprising a metal collector extending from said first insulator to said top means and in electrical contact with each of said anodes through abuttment with the peripheris of the associated openings of said anodes.

3. A primary battery as set forth in claim 2 wherein said openings in each of said anodes and depolarizer pellets are centrally located and wherein the openings of associated depolarizer pellets are concentrically aligned with respect to the anode openings.

4. A primary battery as set forth in claim 1, 2 or 3 wherein said depolarizer includes first and second halves having a current collector positioned therebetween, said current collector having a size slightly greater than said depolarizer pellet for contact with said encasement means but not with said anode.

5. A primary battery as set forth in claims 1, 2 or 3 in which said anode comprises lithium and said depolarizer pellets comprise a charge transfer complex and a halogen.

6. A primary battery comprising:

A. an encasement means having a base portion, said base portion having a first insulating means;

B. a stacked array of cells coextensively positioned with said encasement means but not in electrical contact therewith, each of said cells consisting essentially of an anode and pelletized depolarizer thereon, said depolarizer being in direct contact without any separating layer, except an in situ formed electrolytic layer, with the anode of an adjacent cell said depolarizers of said cells being adapted to extend beyond the perimeter of the anodes for electrical contact with each other;

C. a second insulator means positioned over said array of cells;

D. means for electrically connecting in series each of said anodes;

E. means for electrically connecting in series each of said depolarizer pellets;

F. top means sealingly attached to said encasement means and including first and second terminals electrically connected to the respective means for connecting said anode and depolarizer and insulated from said top mean.

7. A primary battery as set forth in claim 6 wherein each cell comprises an anode having an opening therethrough;

said depolarizer pellet including an opening concentrically aligned with but larger than said opening in the anode; and

said means for electrically connecting said anodes comprising a metal collector positioned through and in contact with the peripheral of each anode opening.

8. A primary battery as set forth in claims 6 or 7 in which the said depolarizer pellets extend beyond the perimeter of its associated anode and said means for electrically connecting said pellets comprises a metal collector in contact with each of said pellets but insulated from said encasement means extending from said first insulator to said second terminal.

9. A primary battery as set forth in claims 6 or 7 wherein said anode comprises lithium and said depolarizer pellets comprise a charge transfer complex and a halogen.