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Battery charging device

  • US 6,362,600 B2
  • Filed: 01/18/2001
  • Issued: 03/26/2002
  • Est. Priority Date: 01/24/2000
  • Status: Expired due to Term
First Claim
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1. A battery charging device for charging batteries comprised of a plurality of cells, the battery charging device comprising:

  • a temperature detecting portion for detecting cell temperatures during charging operations within groups of cells for each of groups of cells in which a plurality of cells has been divided into two or more, a comparing portion for comparing the cell temperature of one group of cells with that of another group of cells, a determining portion for determining whether a temperature difference between the cell temperatures as compared by the comparing portion is exceeding a specified value or not, and a control portion for terminating charge when it is determined by the determining portion that the temperature difference between cell temperatures is exceeding the specified value.

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