Method and apparatus for charging multiple energy storage devices
First Claim
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1. An energy storage and management system (ESMS) for a vehicle propulsion system, the ESMS comprising:
- an energy storage device;
a first DC/DC conversion device coupleable to an internal charging source for charging the energy storage device;
a second DC/DC conversion device coupleable to an external charging source for charging the energy storage device;
a plurality of switching devices for coupling the energy storage device to at least one of the first and second DC/DC conversion devices, the 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 energy storage device;
the first switching device being coupled between the common junction and the external charging source via a first path that does not include the second switching device; and
the second switching device being coupled between the common junction and the internal charging source via a second path that does not include the first switching 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 energy storage device from the internal charging source; and
selectively control operation of the second DC/DC conversion device and at least one switching device when charging the energy storage device from the external charging source.
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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.
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Citations
21 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 DC/DC conversion device coupleable to an internal charging source for charging the energy storage device; a second DC/DC conversion device coupleable to an external charging source for charging the energy storage device; a plurality of switching devices for coupling the energy storage device to at least one of the first and second DC/DC conversion devices, the 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 energy storage device; the first switching device being coupled between the common junction and the external charging source via a first path that does not include the second switching device; and the second switching device being coupled between the common junction and the internal charging source via a second path that does not include the first switching 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 energy storage device from the internal charging source; and selectively control operation of the second DC/DC conversion device and at least one switching device 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)
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14. A vehicle propulsion system, comprising:
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a vehicle drivetrain; an energy storage device coupled to the vehicle drivetrain; a first DC/DC conversion device coupleable to an internal charging source for charging the energy storage device; a second DC/DC conversion device coupleable to an external charging source for charging the energy storage device; a plurality of switching devices for coupling the energy storage device to at least one of the first and second DC/DC conversion devices, the 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 energy storage device; the first switching device being between the common junction and the external charging source 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 source via a second path that does not include the first switching 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 energy storage device from the internal charging source; and selectively control operation of the second DC/DC conversion device and at least one switching device when charging the energy storage device from the external charging source. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification