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Cognition device for battery residual capacity

  • US 5,434,495 A
  • Filed: 10/26/1989
  • Issued: 07/18/1995
  • Est. Priority Date: 03/31/1989
  • Status: Expired due to Fees
First Claim
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1. A device for determining residual capacity of a battery, comprising:

  • means for sensing output voltage of a battery;

    means for sensing ambient temperature of said battery;

    means for storing discharge characteristic data relating to the energy storage characteristics of said battery;

    means for correcting the sensed output voltage of said battery by an amount proportional to a load across said battery;

    means for reading characteristic data from said storing means corresponding to said sensed ambient temperature; and

    means for comparing said read characteristic data with said corrected output voltage and computing the residual capacity of said battery based on the characteristic data matching said corrected output voltage.

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