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METHOD AND APPARATUS FOR DETERMINING DETERIORATION OF SECONDARY BATTERY, AND POWER SUPPLY SYSTEM THEREWITH

  • US 20080204031A1
  • Filed: 03/17/2008
  • Published: 08/28/2008
  • Est. Priority Date: 09/16/2005
  • Status: Active Grant
First Claim
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1. A method for detecting SOC and SOH of a storage battery comprising:

  • calculating an SOC value of the storage battery with use of an SOC calculation unit based on a measured voltage value or a measured current value of the storage battery and calculating an SOH value of the storage battery with use of an SOH calculation unit based on the SOC value;

    further calculating a new SOC value with use of the SOC calculation unit based on the SOH value and calculating a new SOH value with use of the SOH calculation unit based on the new SOC value, these further calculations of SOC value and SOH value being repeated a prescribed n times of at least one so as to obtain an nth calculated SOC value and an nth calculated SOH value;

    outputting the nth calculated SOH value as an SOH output value and outputting the nth calculated SOC value as an SOC output value; and

    storing the SOH output value into a memory.

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