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Battery tester for electric vehicle

  • US 9,335,362 B2
  • Filed: 11/05/2012
  • Issued: 05/10/2016
  • Est. Priority Date: 07/17/2007
  • Status: Active Grant
First Claim
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1. A method of testing a battery of an electric vehicle, comprising:

  • coupling to a databus of the electric vehicle;

    monitoring data carried on the data bus and retrieving information related to current flowing into the battery of the electric vehicle;

    monitoring data carried on the databus and retrieving information related to a voltage of the battery during operation of the electric vehicle;

    compensating for any delay between the monitored current and the monitored voltage to thereby compensate for a time difference between when current flowing into the battery was measured and when a voltage of the battery was measured; and

    diagnosing the battery based upon a parameter calculated from the compensated monitored current and monitored voltage.

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