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Method and system for heating a vehicle battery

  • US 9,340,121 B2
  • Filed: 04/14/2011
  • Issued: 05/17/2016
  • Est. Priority Date: 04/14/2011
  • Status: Active Grant
First Claim
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1. A method of heating a vehicle battery used for vehicle propulsion, comprising the steps of:

  • (a) sensing one or more battery conditions with battery sensors and one or more additional conditions with additional sensors, the battery conditions include a battery temperature and the additional conditions include a transmission state;

    (b) comparing the battery temperature to a temperature threshold; and

    (c) when the battery temperature is less than the temperature threshold and the transmission state is ‘

    park’

    , using both a charging operation and a discharging operation to rapidly cycle or oscillate a flow of electrical current into and out of the vehicle battery without regard to a torque request from a driver so as to quickly raise the battery temperature.

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