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OVERDISCHARGE PREVENTING CIRCUIT APPARATUS AND OVERDISCHARGE PREVENTING METHOD

  • US 20070231680A1
  • Filed: 06/12/2007
  • Published: 10/04/2007
  • Est. Priority Date: 08/30/2002
  • Status: Active Grant
First Claim
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1. A battery pack comprising:

  • a nonaqueous electrolyte secondary battery; and

    a discharge control mechanism which controls discharge of the nonaqueous electrolyte secondary battery when a surface temperature of the nonaqueous electrolyte secondary battery exceeds a discharge control temperature T1

    C.) represented by
    T0=T0+QA



    (1) where T0 is an ambient temperature in a range of 0 to 60°

    C., Q is 8 (°

    C./C), and A is a discharge rate (C) of the nonaqueous electrolyte secondary battery in a case where a current required for discharging a nominal capacity of the nonaqueous electrolyte secondary battery in one hour is 1C, and is within a range of 4C to 7C.

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