METHOD AND APPARATUS FOR CHARGING MULTIPLE ENERGY STORAGE DEVICES
First Claim
1. An energy storage and management system (ESMS) for a vehicle propulsion system, the ESMS comprising:
- an energy storage device;
a first voltage conversion device coupleable to an internal charging source for charging the energy storage device;
a second voltage conversion device coupleable to an external charging source for charging the energy storage device, the second voltage conversion device comprising two DC/DC converters that operate in combination to convert a rectified voltage derived from the external charging source;
a plurality of switching devices for coupling the energy storage device to at least one of the first and second voltage conversion devices, the plurality of switching devices comprising;
a first switching device coupled between the energy storage device and the first voltage conversion device; and
a second switching device coupled between the energy storage device and the second voltage conversion device; and
a control system configured to;
selectively control operation of the first voltage conversion device and the first switching device when charging the energy storage device from the internal charging source; and
selectively control operation of the second voltage conversion device and the first and second switching devices when charging the energy storage device from the external charging source.
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Accused Products
Abstract
An electric vehicle includes a controller configured to receive sensor feedback from a high voltage storage device and from a low voltage storage device, compare the sensor feedback to operating limits of the respective high and low voltage storage device, determine, based on the comparison a total charging current to the high voltage storage device and to the low voltage storage device and a power split factor of the total charging current to the high voltage device and to the low voltage device, and regulate the total power to the low voltage storage device and the high voltage storage device based on the determination.
1 Citation
16 Claims
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1. An energy storage and management system (ESMS) for a vehicle propulsion system, the ESMS comprising:
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an energy storage device; a first voltage conversion device coupleable to an internal charging source for charging the energy storage device; a second voltage conversion device coupleable to an external charging source for charging the energy storage device, the second voltage conversion device comprising two DC/DC converters that operate in combination to convert a rectified voltage derived from the external charging source; a plurality of switching devices for coupling the energy storage device to at least one of the first and second voltage conversion devices, the plurality of switching devices comprising; a first switching device coupled between the energy storage device and the first voltage conversion device; and a second switching device coupled between the energy storage device and the second voltage conversion device; and a control system configured to; selectively control operation of the first voltage conversion device and the first switching device when charging the energy storage device from the internal charging source; and selectively control operation of the second voltage conversion device and the first and second switching devices when charging the energy storage device from the external charging source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification