Laminar batteries and methods of making the same

• US 4,756,717 A
• Filed: 02/09/1987
• Issued: 07/12/1988
• Est. Priority Date: 08/24/1981
• Status: Expired due to Term

• Current Assignee: Polaroid Corporation (PLR IP Holdings LLC)
• Original Assignee: Polaroid Corporation (PLR IP Holdings LLC)
• Inventors: Keene, deceased, Robert G., Sturgis, John I.
• Primary Examiner(s): Hearn, Brian E.
• Assistant Examiner(s): Kalafut, Stephen J.
• Application Number:
  US06/012,532
• Time in Patent Office: 519 Days
• Field of Search: 29/623.3, 29/623.4, 427/289, 427/290, 429/162, 429/178
• US Class Current: 29/623.3
• CPC Class Codes: H01M 6/48 with bipolar electrodes
• CPC Class Codes: Y10T 29/49112 including laminating of indefinite length material
• CPC Class Codes: Y10T 29/49114 including adhesively bonding

Abstract

A process for making laminar electrical cells and batteries each having an end terminal comprising a thin sheet of metal, in which an elongated web is made by adhering the end terminals to a sheet of dimensionally stable thermal insulating material in a spaced rectangular array of rows and columns. The process of forming pockets in the end terminals and registering the pocketed terminals on a second web carrying a spaced rectangular array of battery components comprising the steps of forming index perforations in each terminal, deforming the terminals to provide pockets therein, and joining the terminal web and the second web with the aid of the index perforations.

Claims

1. The process of making pocketed terminals for laminar batteries, comprising the steps of adhering an array of metal terminal blanks to an elongated sheet of dimensionally stable thermal insulating material in spaced rows across said elongated sheet and in parallel spaced columns extending along said elongated sheet in the direction of its elongation, forming index aperatures in each of said blanks, creasing said elongated sheet between adjacent columns of said blanks to provide for expansion of the blanks, passing said sheet carrying said blanks through dies to form pockets in said blanks, and engaging said index apertures with indexing pins to advance said sheet of pocketed terminals at a controlled rate of pocketed terminals per unit despite dimensional variations occuring during the formation of said pockets.

2. The process of claim 1, further comprising advancing an insulating web on which an array of battery components corresponding in number and arrangement to said terminals are mounted at a fixed rate equal to the rate of advance of said elongated insulating sheet carrying said pocketed terminals while laminating said insulating sheets together with said terminals in registry with said components and receiving at least outermost portions of said components in said pockets.