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BATTERY STATE ESTIMATING DEVICE AND POWER SUPPLY DEVICE

  • US 20160327613A1
  • Filed: 01/16/2015
  • Published: 11/10/2016
  • Est. Priority Date: 01/29/2014
  • Status: Abandoned Application
First Claim
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1. A battery state estimating device comprising:

  • a first estimating part that estimates internal resistance of a secondary battery at predetermined timing;

    a first calculating part that calculates a first ratio of the internal resistance of the secondary battery in an initial state to the internal resistance of the secondary battery at the predetermined timing;

    a storage that stores associated data that associates an internal resistance ratio which is a ratio of the internal resistance of the secondary battery in the initial state to the internal resistance of the secondary battery in a degraded state with a full charge capacity ratio which is a ratio of a full charge capacity of the secondary battery in the initial state to the full charge capacity of the secondary battery in the degraded state; and

    a second estimating part that estimates the full charge capacity of the secondary battery at the predetermined timing based on the first ratio calculated by the first calculating part with reference to the associated data.

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