Packaged battery, stacked battery assembly, and film-covered battery

  • US 9,653,715 B2
  • Filed: 03/21/2014
  • Issued: 05/16/2017
  • Est. Priority Date: 02/21/2007
  • Status: Active Grant
First Claim
Patent Images

1. A film-covered battery comprising:

  • a battery element, andone or more exterior films that comprise a housing section, a sealing section and a safety valve, wherein;

    said housing section covers said battery element,said sealing section is formed by thermal fusion-bonding opposite to surfaces of said one or more exterior films around the battery element,said safety valve passes through said sealing section, anda side of said sealing section that has said safety valve is folded or wound,wherein, said side of said sealing section is unfolded or unwound due to an increase in the inner pressure such that said safety valve protrudes.

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