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Electric vehicle with improved electric drive system

  • US 9,780,702 B2
  • Filed: 03/10/2014
  • Issued: 10/03/2017
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • at least one energy source;

    a bi-directional DC/DC converter coupled to the energy source; and

    a drive system coupled to the DC/DC converter comprising;

    a first converter coupled to a first load;

    a second converter coupled to an auxiliary load;

    a third converter;

    a first switch module coupled to both an output of the first converter and an output of the third converter; and

    a second switch module coupled to both an output of the second converter and an output of the third converter; and

    a controller configured to;

    switch off both the first and second switch modules to allow the first load to be powered by the first converter and the auxiliary load to be powered by the second converter in a first mode;

    switch on the first switch module and switch off the second switch module to allow the first load to be powered by both the first converter and third converter, and the auxiliary load to be powered by the second converter in a second mode; and

    switch off the first switch module and switch on the second switch module to allow the first load to be powered by the first converter, and the auxiliary load to be powered by both the second converter and third converter in a third mode.

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