Electric vehicle with improved electric drive system
First Claim
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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Accused Products
Abstract
An apparatus includes at least one energy source and a drive system coupled to the at least one energy source. The drive system converts electrical power received from the at least one energy source and provides converted electrical power for driving at least one load. The drive system includes a first converter, a second converter, and a first switch module coupled to outputs of the first and second converters. When the apparatus is operating under a first mode, the first switch module is switched to assume a first state to allow a first output electrical power provided from the first converter and a second output electrical power provided from the second converter to be combined for driving a first load with the combined output electrical power.
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Citations
15 Claims
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1. An apparatus, comprising:
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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. - View Dependent Claims (2, 3, 4, 5)
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6. A vehicle, comprising:
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a first converter coupled to a first electric motor; a second converter coupled to a second electric motor; a third converter; a first switch module coupled to both an output of the first converter and an output of the third converter; 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 electric motor to be powered by the first converter and the second electric motor 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 electric motor to be powered by both the first converter and third converter, and the second electric motor 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 electric motor to be powered by the first converter, and the second electric motor to be powered by both the second converter and third converter in a third mode. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A system, comprising:
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a first energy source coupled to a first converter; a second energy source coupled to both a second converter and a third converter; a first load coupled to the first converter; a second load coupled to the second converter; a first switch module coupled to an output of the first converter and an output of the third converter; a second switch module coupled to the 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 second 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 second 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 second load to be powered by both the second converter and third converter in a third mode. - View Dependent Claims (14, 15)
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Specification