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Battery System

  • US 20170141589A1
  • Filed: 06/15/2015
  • Published: 05/18/2017
  • Est. Priority Date: 06/30/2014
  • Status: Active Grant
First Claim
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1. A battery system that connects a first battery and a second battery in parallel through a switch SW, the battery system comprising:

  • an estimator which estimates a charging current of the first battery at least from an internal resistance of the first battery; and

    an estimator which estimates a charging current of the second battery at least from an internal resistance of the second battery,wherein the switch SW is switched by a procedure in which a sum of a stored charge in the first battery and a stored charge in the second battery increases, based on the charging current of the first battery and the charging current of the second battery.

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