Laminar batteries

• US 4,086,399 A
• Filed: 03/30/1977
• Issued: 04/25/1978
• Est. Priority Date: 03/30/1977
• Status: Expired due to Term

• Current Assignee: Polaroid Corporation (PLR IP Holdings LLC)
• Original Assignee: Polaroid Corporation (PLR IP Holdings LLC)
• Inventors: Hyland, Albert L., Keene, Robert G.
• Primary Examiner(s): Skapars, Anthony
• Application Number:
  US05/782,836
• Time in Patent Office: 391 Days
• Field of Search: 429/162, 429/152, 429/153, 429/160, 429/163, 429/178, 429/174, 429/185, 429/211, 429/122
• US Class Current: 429/122
• CPC Class Codes: H01M 50/562 characterised by the material
• CPC Class Codes: H01M 50/567 by fixing means, e.g. screws, rivets or bolts
• CPC Class Codes: H01M 6/48 with bipolar electrodes

Abstract

A thin, flat laminar battery having an end cell terminal assembly with a projecting tab substantially shorter than the side of the battery from which the tab projects. The tab is folded around the battery to bring the terminal into substantially the same plane as the opposite end terminal.

Claims

1. An electrode terminal subassembly for use in the manufacture of laminar batteries and comprising a metal terminal sheet laminated to a conductive plastic current collector sheet, said sheets being formed with a generally rectangular body portion adapted to correspond with the major dimensions of the battery and a tab projecting from one side and adapted to be folded around the battery, said tab having a length substantially less than the length of said body portion, said current collector sheet having an electrode patch formed in a central region of the major rectangular portion of the sheet corresponding to the electrode region of the battery.

2. In a flat laminar battery of the kind in which one terminal has a flap that is folded over to permit access thereto on the same side of said battery as the other terminal, said flap being insulated from said other terminal by an insulating sheet comprising paper, the improvement wherein said flap covers only a minor portion of the length of the edge of the battery around which said flap is folded, thereby increasing the opportunity to inspect the battery for leakage and to allow the evaporation of any leakage that may occur.