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Charge/discharge control method for battery pack and charge/discharge control apparatus for battery pack

  • US 6,828,758 B2
  • Filed: 02/11/2003
  • Issued: 12/07/2004
  • Est. Priority Date: 02/20/2002
  • Status: Expired due to Term
First Claim
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1. A charge/discharge control apparatus for a battery pack having a plurality of cells, comprising:

  • a voltage detection portion that measures a voltage of each set of a predetermined number of cells provided in the battery pack;

    a computation portion that computes a state quantity of each set of the predetermined number of cells based on the voltage measured by the voltage detection portion; and

    a charge/discharge control portion that performs a charge/discharge control based on only a least state quantity that is a least one of the state quantities of the sets of the predetermined number of cells, the charge/discharge control being performed so that only the least one of the state quantities is within a predetermined range.

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