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Correction device and correction method for secondary batteries connected in series

  • US 5,994,873 A
  • Filed: 12/15/1997
  • Issued: 11/30/1999
  • Est. Priority Date: 12/26/1996
  • Status: Expired due to Fees
First Claim
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1. A correction device for secondary batteries for correcting a difference among the secondary batteries during a charge operation, comprising:

  • a voltage difference detection circuit for detecting variation in terminal voltages of at least two secondary batteries connected in series; and

    a discharge circuit for discharging one of the at least two secondary batteries which has a maximum terminal voltage, when the variation in the terminal voltages exceeds a preset value.

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