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Charging control apparatus

  • US 5,703,466 A
  • Filed: 08/02/1996
  • Issued: 12/30/1997
  • Est. Priority Date: 08/02/1995
  • Status: Expired due to Term
First Claim
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1. A charging control apparatus for charging a secondary battery, comprising:

  • a decision circuit for determining a discharged status of a secondary battery prior to when the secondary battery starts being charged; and

    a charging pattern control circuit for controlling a charging current supplied to the secondary battery at progressively smaller constant stepwise levels according to a charging pattern based on the discharged status of the secondary battery as determined by said decision circuit each time a voltage across the secondary battery reaches a first predetermined value, and charging the secondary battery with the charging current which is controlled at said progressively smaller constant stepwise levels.

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