Vehicle power supply apparatus
First Claim
1. A vehicle power supply apparatus to be mounted on a vehicle that includes an engine, the vehicle power supply apparatus comprising:
- a motor generator coupled to the engine;
a first electricity storage device able to be coupled to the motor generator;
a second electricity storage device able to be coupled to the motor generator in parallel to the first electricity storage device;
a switch switchable between a first electrically conductive state that allows the motor generator and the first electricity storage device to be coupled to each other and a first cutoff state that allows the motor generator and the first electricity storage device to be isolated from each other;
a switch controller configured to cause the switch to be switched from the first electrically conductive state to the first cutoff state when the motor generator is controlled into a powering state;
an electricity storage device determiner configured to determine whether the second electricity storage device is in a normal state in which the second electricity storage device is able to discharge normally or in an abnormal state in which the second electricity storage device is unable to discharge normally; and
a motor controller configured to control the motor generator,the switch controller causing the switch to be switched from the first cutoff state to the first electrically conductive state in a situation where the first electricity storage device discharges beyond a threshold, on a condition that the switch is switched to the first cutoff state in accordance with the controlling of the motor generator into the powering state and the second electricity storage device is determined by the electricity storage device determiner as being in the normal state, andthe switch controller causing the first cutoff state of the switch to be maintained in the situation where the first electricity storage device discharges beyond the threshold, on a condition that the switch is switched to the first cutoff state in accordance with the controlling of the motor generator into the powering state and the second electricity storage device is determined by the electricity storage device determiner as being in the abnormal state, andthe motor controller switching the motor generator from the powering state to a power-generation state on a condition that the second electricity storage device is determined by the electricity storage device determiner as being in the abnormal state and the first cutoff state of the switch is thereby maintained by the switch controller.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicle power supply apparatus includes a motor generator, a first electricity storage device, a second electricity storage device, a switch, a switch controller, and an electricity storage device determiner. The switch controller is configured to cause the first cutoff state of the switch, switchable between a first electrically conductive state that allows the motor generator and the first electricity storage device to be coupled to each other and a first cutoff state that allows the motor generator and the first electricity storage device to be isolated from each other, to be maintained in a situation where the first electricity storage device discharges beyond a threshold, on a condition that the switch is switched to the first cutoff state in accordance with controlling of the motor generator into a powering state and the second electricity storage device is determined as being in an abnormal state.
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Citations
11 Claims
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1. A vehicle power supply apparatus to be mounted on a vehicle that includes an engine, the vehicle power supply apparatus comprising:
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a motor generator coupled to the engine; a first electricity storage device able to be coupled to the motor generator; a second electricity storage device able to be coupled to the motor generator in parallel to the first electricity storage device; a switch switchable between a first electrically conductive state that allows the motor generator and the first electricity storage device to be coupled to each other and a first cutoff state that allows the motor generator and the first electricity storage device to be isolated from each other; a switch controller configured to cause the switch to be switched from the first electrically conductive state to the first cutoff state when the motor generator is controlled into a powering state; an electricity storage device determiner configured to determine whether the second electricity storage device is in a normal state in which the second electricity storage device is able to discharge normally or in an abnormal state in which the second electricity storage device is unable to discharge normally; and a motor controller configured to control the motor generator, the switch controller causing the switch to be switched from the first cutoff state to the first electrically conductive state in a situation where the first electricity storage device discharges beyond a threshold, on a condition that the switch is switched to the first cutoff state in accordance with the controlling of the motor generator into the powering state and the second electricity storage device is determined by the electricity storage device determiner as being in the normal state, and the switch controller causing the first cutoff state of the switch to be maintained in the situation where the first electricity storage device discharges beyond the threshold, on a condition that the switch is switched to the first cutoff state in accordance with the controlling of the motor generator into the powering state and the second electricity storage device is determined by the electricity storage device determiner as being in the abnormal state, and the motor controller switching the motor generator from the powering state to a power-generation state on a condition that the second electricity storage device is determined by the electricity storage device determiner as being in the abnormal state and the first cutoff state of the switch is thereby maintained by the switch controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A vehicle power supply apparatus to be mounted on a vehicle that includes an engine, the vehicle power supply apparatus comprising:
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a motor generator coupled to the engine; a first electricity storage device able to be coupled to the motor generator; a second electricity storage device able to be coupled to the motor generator in parallel to the first electricity storage device; a switch switchable between a first electrically conductive state that allows the motor generator and the first electricity storage device to be coupled to each other and a first cutoff state that allows the motor generator and the first electricity storage device to be isolated from each other; and circuitry configured to cause the switch to be switched from the first electrically conductive state to the first cutoff state when the motor generator is controlled into a powering state, determine whether the second electricity storage device is in a normal state in which the second electricity storage device is able to discharge normally or in an abnormal state in which the second electricity storage device is unable to discharge normally, cause the switch to be switched from the first cutoff state to the first electrically conductive state in a situation where the first electricity storage device discharges beyond a threshold, on a condition that the switch is switched to the first cutoff state in accordance with the controlling of the motor generator into the powering state and the second electricity storage device is determined as being in the normal state, cause the first cutoff state of the switch to be maintained in the situation where the first electricity storage device discharges beyond the threshold, on a condition that the switch is switched to the first cutoff state in accordance with the controlling of the motor generator into the powering state and the second electricity storage device is determined as being in the abnormal state, and switch the motor generator from the powering state to a power-generation state on a condition that the second electricity storage device is determined by the electricity storage device determiner as being in the abnormal state and the first cutoff state of the switch is thereby maintained by the switch controller.
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Specification