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Nonaqueous electrolyte battery sealed in a film case

  • US 6,475,668 B1
  • Filed: 12/15/2000
  • Issued: 11/05/2002
  • Est. Priority Date: 12/17/1999
  • Status: Expired due to Fees
First Claim
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1. A nonaqueous electrolyte battery comprising:

  • a film case;

    an anode, a cathode, and an electrolyte solution sealed in said film case;

    an anode lead wire whose one end is connected to said anode and other end projects outside said film case; and

    a cathode lead wire whose one end is connected to said cathode and other end projects outside said film case, wherein said film case is formed by laminating two packaging films, each packaging film comprising an engineering plastic layer, a water-proof thermoplastic polymer layer, and interposing layers between the engineering plastic layer and the water-proof thermoplastic polymer layer, said interposing layers comprising at least one metallic layer, at least one acid resistant layer, and optionally at least one water-proof thermoplastic layer, and said acid resistant layer contains a thermoplastic polymer and at least one metal compound, selected from the group consisting of magnesium oxide and hydrotalcites, in an amount of about 2 parts by weight to about 25 parts by weight with respect to 100 parts by weight of said thermoplastic polymer, wherein said hydrotalcites are compounds represented by the following formula;

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