Device for detecting residual capacity of battery

  • US 4,849,700 A
  • Filed: 03/15/1988
  • Issued: 07/18/1989
  • Est. Priority Date: 03/19/1987
  • Status: Expired due to Term
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First Claim
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1. A device for detecting the residual capacity of a battery, comprising:

  • current measuring means for measuring a discharge current of the battery;

    voltage measuring means for measuring a voltage of the battery;

    converting means for converting one of the measured discharge current of the battery and the measured battery voltage into a value conforming to discharge characteristics of the battery; and

    comparing means for comparing the conversion value with the other of the measured discharge current of the battery and the measured battery voltage, to output the result of comparison in the form of a residual capacity detect signal.

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