Battery with modular air cathode and anode cage

• US 4,693,946 A
• Filed: 03/11/1986
• Issued: 09/15/1987
• Est. Priority Date: 03/11/1986
• Status: Expired due to Fees

• Current Assignee: Eltech Systems Corporation (Industrie De Nora S.p.A)
• Original Assignee: Eltech Systems Corporation (Industrie De Nora S.p.A)
• Inventors: Niksa, Andrew J., Niksa, Marilyn J., Pohto, Gerald R., Schue, Thomas J., Wheeler, Douglas J., Lakatos, Leslie K.
• Primary Examiner(s): Skapars, Anthony
• Application Number:
  US06/838,484
• Time in Patent Office: 553 Days
• Field of Search: 429/27, 429/28, 429/101, 429/38, 429/96, 429/100, 429/39, 429/208
• US Class Current: 429/405
• CPC Class Codes: H01M 12/065 with plate-like electrodes or stacks of plate-like electrodes
• CPC Class Codes: H01M 2004/024 Insertable electrodes
• CPC Class Codes: H01M 4/8626 characterised by the form
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A battery assembly of the consumable metal anode type has now been constructed for ready assembly as well as disassembly. In a non-conductive and at least substantially inert cell body, space is provided for receiving an open-structured, non-consumable anode cage. The cage has an open top for facilitating insertion of an anode. A modular cathode is used, comprising a peripheral current conductor frame clamped about a grid reinforced air cathode in sheet form. The air cathode may be double gridded. The cathode frame can be sealed, during assembly, with electrolyte-resistant-sealant as well as with adhesive. The resulting cathode module can be assembled outside the cell body and readily inserted therein, or can later be easily removed therefrom.

Claims

1. A battery of the consumable metal anode type adapted for ready assembly as well as disassembly, said battery comprising:

a non-conductive cell container resistant to cell electrolyte;

a unitized framed gas-diffusion cathode with porous sheet cathode member, foraminous metal conductor member impressed against said sheet cathode member, and conductive metal frame positioned around the peripheral edges of said sheet cathode member and conductor member,

an anode cage in the cell container and having cage frame members at least in part compressed against the frame of said cathode,

with said anode cage and unitized frame cathode being independently removable upon compression release and reinsertable in said non-conductive cell container.

2. The battery of claim 1 wherein said anode cage has an open top and cage bars along at least one side, said cage bars being in spaced facing relationship with said sheet cathode member.

3. The battery of claim 2 wherein said anode cage contains a consumable metal anode in engagement against said cage bars, readily insertable through the open top of said cage, as well as moveable within said cage during consumption.

4. The battery of claim 1 wherein said sheet cathode member has said conductive metal frame crimped around the peripheral edges of said sheet cathode.

5. The battery of claim 1 wherein said cathode has a conductive metal frame U-shaped in cross-section with frame edges crimped around said peripheral edges of said sheet cathode and conductor members.

6. A battery assembly of the consumable metal anode type having a cathode with an electrically conductive metal frame adjacent an open-structured anode holder having non-conductive frame members, the cathode frame having a conductive lowermost frame member in pressed engagement against an anode holder non-conductive lowermost frame member, with said lowermost members being substantially of equal height.