Method and apparatus for charging multiple energy storage devices
First Claim
Patent Images
1. An energy storage and management system (ESMS) comprising:
- a plurality of energy ports, each being coupleable to a charging device or an energy storage device;
a plurality of DC electrical conversion devices selectively coupled to the plurality of energy ports;
a plurality of switching devices each selectively engaged to control a charging power provided to one or more of the plurality of energy ports; and
a controller configured to;
receive sensor feedback from each energy storage device coupled to an energy port of the plurality of energy ports;
receive sensor feedback from each charging device coupled to an energy port of the plurality of energy ports;
compare the sensor feedback from each energy storage device to the sensor feedback from each charging device; and
selectively control operation of the plurality of DC electrical conversion devices and plurality of switching devices based on the comparison.
2 Assignments
2 Petitions
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.
69 Citations
19 Claims
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1. An energy storage and management system (ESMS) comprising:
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a plurality of energy ports, each being coupleable to a charging device or an energy storage device; a plurality of DC electrical conversion devices selectively coupled to the plurality of energy ports; a plurality of switching devices each selectively engaged to control a charging power provided to one or more of the plurality of energy ports; and a controller configured to; receive sensor feedback from each energy storage device coupled to an energy port of the plurality of energy ports; receive sensor feedback from each charging device coupled to an energy port of the plurality of energy ports; compare the sensor feedback from each energy storage device to the sensor feedback from each charging device; and selectively control operation of the plurality of DC electrical conversion devices and plurality of switching devices based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vehicle propulsion system comprising:
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an electric motor; an energy storage system configured to provide power to the electric motor, the energy storage system comprising a plurality of energy storage devices; a charger interface coupleable to a charging device configured to receive charging power therefrom for charging the energy storage system; and an energy storage and management system (ESMS) coupled to the energy storage system and the charger interface to selectively transfer the charging power from the charger interface to the energy storage system, the ESMS comprising; a plurality of energy ports, each coupleable to a respective one of the plurality of energy storage devices or the charger interface; a plurality of buck-boost converters selectively coupled to the plurality of energy ports; and a plurality of contactors each selectively engaged to control a charging power provided to one or more of the plurality of energy ports; and a controller configured to; receive sensor feedback from each energy storage device coupled to an energy port of the plurality of energy ports; receive sensor feedback from the charging interface coupled to an energy port of the plurality of energy ports; compare the sensor feedback from each energy storage device to the sensor feedback from the charging interface; and selectively control operation of the plurality of buck-boost converters and plurality of contactors based on the comparison. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An energy storage and management system (ESMS) for a vehicle propulsion system, the ESMS comprising:
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a plurality of energy storage devices including; a first energy storage device; and a second energy storage device; a plurality of DC/DC conversion devices including; a first DC/DC conversion device coupleable to an external charging device and configured to charge the plurality of energy storage devices; a second DC/DC conversion device coupleable to an internal charging device and configured to charge the plurality of energy storage devices; and a third DC/DC conversion device coupled to the second DC/DC conversion device; a plurality of switching devices including; a first switching device and a second switching device coupled to a common junction that has a common path to the first energy storage device; the first switching device being between the common junction and the external charging device via a first path that does not include the second switching device; and the second switching device being between the common junction and the internal charging device via a second path that does not include the first switching device; and a third switching device coupled between the second energy storage device and the third DC/DC conversion device; and a control system configured to; selectively control operation of the first DC/DC conversion device and at least one switching device when charging the first and second energy storage devices from the external charging device; and selectively control operation of the second and third DC/DC conversion devices and at least one switching device when charging the first and second energy storage devices from the internal charging device. - View Dependent Claims (17, 18, 19)
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Specification