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Package for a flat electrochemical device

  • US 5,637,418 A
  • Filed: 02/08/1996
  • Issued: 06/10/1997
  • Est. Priority Date: 02/08/1996
  • Status: Expired due to Term
First Claim
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1. A package for a flat electrochemical device, said flat electrochemical device comprising a cell stack having first and second electrodes, said package comprising:

  • a flexible circuit board having a first half and a second half, said flexible circuit board comprised of;

    a base layer fabricated of polymeric material having an outermost side and an innermost side;

    a conductor layer disposed on said base layer on said outermost side providing a first contact portion and a second contact portion on said second half, and a runner extending from said first contact portion to said second half;

    a cover coat layer fabricated of polymeric material disposed on said conductor layer and said base layer on said outermost side of said base layer, and having a first opening for exposing said first contact portion and a second opening for exposing said second contact portion;

    a first collector disposed on said base layer on said innermost side on said first half;

    a second collector disposed on said base layer on said innermost side on said second half;

    wherein said first collector is electrically connected to said runner by a first plated through-hole in said first half, said second collector is electrically connected to said second contact portion by a second plated through-hole in said second half; and

    wherein said flexible circuit board has a periphery and a fringe portion extending around said periphery, said flexible circuit board is folded over said cell stack such that said first half is adjacent to said first electrode and said second half is adjacent said second electrode, said first collector is in intimate contact with said first electrode, said second collector is in intimate contact with said second electrode, and said fringe portion of said first half is sealed to said fringe portion of said second half.

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