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ESTIMATED CHARGING AMOUNT CALCULATOR OF RECHARGEABLE BATTERY

  • US 20130249490A1
  • Filed: 03/18/2013
  • Published: 09/26/2013
  • Est. Priority Date: 03/22/2012
  • Status: Abandoned Application
First Claim
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1. An estimated charging amount calculator of a rechargeable battery comprising:

  • a terminal voltage estimating means that estimates a terminal voltage of a rechargeable battery based on an estimated charging amount, which is a physical quantity expressing an amount of charge of the rechargeable battery per unit time, and a history of a charge/discharge of the rechargeable battery;

    a charge/discharge current calculation means that uses a detected value of the terminal voltage of the rechargeable battery as an input, and calculates a charge/discharge current of the rechargeable battery such that an estimated value of the terminal voltage produced by the terminal voltage estimating means approaches to the detected value;

    an integration process means that accepts the charge/discharge current calculated by the charge/discharge current calculation means as an input, and performs an integration process of the charge/discharge current of the rechargeable battery; and

    an estimated charging amount calculation means (S40, S40a) that calculates an estimated charging amount based on an integrated value of the integration process means.

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