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Method and apparatus for indicating battery state of hybrid car

  • US 6,784,640 B2
  • Filed: 02/19/2003
  • Issued: 08/31/2004
  • Est. Priority Date: 02/19/2002
  • Status: Expired due to Fees
First Claim
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1. A method for indicating a battery state of a hybrid car, the method comprising the steps of:

  • detecting Δ

    V/Δ

    I which is a change value of voltage and current from a first state and a second state of a battery being charged/discharged; and

    determining whether charging/discharging is performed in a battery protective state based on the Δ

    V/Δ

    I, and indicating that the battery protective state is established when charging/discharging is performed in the protective state.

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