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Circuits and methods for heating batteries in parallel using resonance components in series

  • US 8,829,856 B2
  • Filed: 07/21/2011
  • Issued: 09/09/2014
  • Est. Priority Date: 07/30/2010
  • Status: Active Grant
First Claim
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1. A heating circuit for a battery comprising a first battery and a second battery, the heating circuit comprising a first switch unit, a second switch unit, a first damping component, a second damping component, a first current storage component, a second current storage component, a switching control module and a first energy storage component, wherein:

  • the first battery, the first damping component, the first current storage component, the first energy storage component and the first switch unit are connected in a first loop to constitute a first charging/discharging circuit;

    the second battery, the second damping component, the second current storage component, the first energy storage component and the second switch unit are connected in a second loop to constitute a second charging/discharging circuit;

    when the first energy storage component is charged or discharges, a direction of a charging/discharging current in the second charging/discharging circuit is reverse to a direction of a charging/discharging current in the first charging/discharging circuit; and

    the switching control module is electrically connected with the first switch unit and the second switch unit, and the switching control module is configured to control the first switch unit and the second switch unit to switch on in alternate, so as to control electric energy to flow among the first battery, the first energy storage component and the second battery.

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