POWER SUPPLY SYSTEM AND VEHICLE INCLUDING THE SAME, AND METHOD OF CONTROLLING THE SAME
First Claim
1. A power supply system for supplying electric power to first and second load devices, comprising:
- a first electric power line pair electrically connected to said first load device;
a plurality of rechargeable power storage unitsa plurality of voltage conversion units arranged corresponding to said plurality of power storage units respectively, said plurality of voltage conversion units being connected in parallel to said first electric power line pair and each being configured to perform a voltage conversion operation between said first electric power line pair and corresponding said power storage unit;
a plurality of disconnection units arranged corresponding to said plurality of power storage units respectively, each for electrically disconnecting corresponding said power storage unit and corresponding said voltage conversion unit from each other;
a second electric power line pair having one end electrically connected between a first voltage conversion unit representing one of said plurality of voltage conversion units and corresponding said disconnection unit and another end electrically connected to said second load device; and
a control unit for controlling said plurality of voltage conversion units, when one disconnection unit among said plurality of disconnection units electrically disconnects corresponding said power storage unit and corresponding said voltage conversion unit from each other, such that electric power supply to said first load device and electric power supply to said second load device are continued through said first electric power line pair and through said second electric power line pair respectively by using electric power from remaining said power storage unit.
1 Assignment
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Accused Products
Abstract
When power storage units (10) and (20) are both in a normal condition, system relays (SMR1) and (SMR2) are maintained in an ON state. A converter (18) performs a voltage conversion operation in accordance with a voltage control mode (boost), and a converter (28) performs a boost operation in accordance with an electric power control mode. If some kind of fault condition occurs in the power storage unit (10) and the system relay (SMR1) is driven to an OFF state, the converters (18) and (28) stop the voltage conversion operation and maintain an electrically conducting state between the power storage units (10) and (20) and a main positive bus (MPL), a main negative bus (MNL).
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Citations
13 Claims
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1. A power supply system for supplying electric power to first and second load devices, comprising:
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a first electric power line pair electrically connected to said first load device; a plurality of rechargeable power storage units a plurality of voltage conversion units arranged corresponding to said plurality of power storage units respectively, said plurality of voltage conversion units being connected in parallel to said first electric power line pair and each being configured to perform a voltage conversion operation between said first electric power line pair and corresponding said power storage unit; a plurality of disconnection units arranged corresponding to said plurality of power storage units respectively, each for electrically disconnecting corresponding said power storage unit and corresponding said voltage conversion unit from each other; a second electric power line pair having one end electrically connected between a first voltage conversion unit representing one of said plurality of voltage conversion units and corresponding said disconnection unit and another end electrically connected to said second load device; and a control unit for controlling said plurality of voltage conversion units, when one disconnection unit among said plurality of disconnection units electrically disconnects corresponding said power storage unit and corresponding said voltage conversion unit from each other, such that electric power supply to said first load device and electric power supply to said second load device are continued through said first electric power line pair and through said second electric power line pair respectively by using electric power from remaining said power storage unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A vehicle, comprising:
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a power supply system for supplying electric power to first and second load devices; and a drive force generation unit for generating drive force for running as said first load device; said power supply system including a first electric power line pair electrically connected to said first load device, a plurality of rechargeable power storage units, a plurality of voltage conversion units arranged corresponding to said plurality of power storage units respectively, said plurality of voltage conversion units being connected in parallel to said first electric power line pair and each being configured to perform a voltage conversion operation between said first electric power line pair and corresponding said power storage unit, a plurality of disconnection units arranged corresponding to said plurality of power storage units respectively, each for electrically disconnecting corresponding said power storage unit and corresponding said voltage conversion unit from each other, a second electric power line pair having one end electrically connected between a first voltage conversion unit representing one of said plurality of voltage conversion units and corresponding said disconnection unit and another end electrically connected to said second load device, and a control unit for controlling said plurality of voltage conversion units, when one disconnection unit among said plurality of disconnection units electrically disconnects corresponding said power storage unit and corresponding said voltage conversion unit from each other, such that electric power supply to said first load device and electric power supply to said second load device are continued through said first electric power line pair and through said second electric power line pair respectively by using electric power from remaining said power storage unit. - View Dependent Claims (12)
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13. A method of controlling a power supply system for supplying electric power to first and second load devices, said power supply system including
a first electric power line pair electrically connected to said first load device, a plurality of rechargeable power storage units, a plurality of voltage conversion units arranged corresponding to said plurality of power storage units respectively, said plurality of voltage conversion units being connected in parallel to said first electric power line pair and each being configured to perform a voltage conversion operation between corresponding said power storage unit and said first electric power line pair, a plurality of disconnection units arranged corresponding to said plurality of power storage units respectively, each for electrically disconnecting corresponding said power storage unit and corresponding said voltage conversion unit from each other, and a second electric power line pair having one end electrically connected between a first voltage conversion unit representing one of said plurality of voltage conversion units and corresponding said disconnection unit and another end electrically connected to said second load device, said method comprising the steps of: -
detecting whether a fault condition is present, for each of said plurality of power storage units; electrically disconnecting, when the fault condition of any one power storage unit among said plurality of power storage units is detected, the power storage unit of which fault condition has been detected and corresponding said voltage conversion unit from each other by using corresponding said disconnection unit; and controlling said plurality of voltage conversion units such that electric power supply to said first load device and electric power supply to said second load device are continued through said first electric power line pair and through said second electric power line pair respectively by using electric power from remaining power storage unit except for disconnected said power storage unit.
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Specification