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On-board battery charger for electric vehicles and control method thereof

  • US 9,283,861 B2
  • Filed: 11/01/2013
  • Issued: 03/15/2016
  • Est. Priority Date: 06/05/2013
  • Status: Expired due to Fees
First Claim
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1. An on-board battery charger which cooperates with a battery management system (BMS) and charges batteries by converting alternating current power input from an external charging facility into direct current power, the on-board battery charger comprising a memory and a processor, the memory configured to store program instructions and the processor configured to execute the program instructions, the program instructions when executed configured to:

  • sense a voltage value of power input from the charging facility in the initial stage of charging which the charging facility is connected to charge the batteries;

    receive a pulse width modulation (PWM) signal of a current value of the power from the charging facility;

    calculate an output voltage value to be output to the batteries using the sensed voltage value of the input power;

    calculate an output current value to be output to the batteries using a duty value of the received PWM signal; and

    transmit the calculated output voltage and current values to the cooperating BMS to calculate an estimated charging time.

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