Power supply control device and storage medium
AssigneeDENSO TEN Limited
InventorsSeiya Morikawa, Takeshi Matsumoto
Life of this patent
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Abstract
A power supply control device includes: a first switch coupled between a main power supply and a load; a second switch coupled between a sub-power supply and the load; and a controller configured to perform on/off control of the first switch and the second switch. The controller is configured to: turn off the first switch and turn on the second switch, in response to an ignition switch being turned off; and turn off the second switch and then turn on the first switch, in response to the ignition switch being turned on.
Claims6
A power supply control device comprising:
- a first system configured to supply electric power from a main power supply to a load via a first switch;
- a second system configured to supply electric power from a sub-power supply to the load via a second switch;
- an inter-system switch coupled between the first system and the second system;
- and
- a controller configured to perform on/off control of the first switch and the second switch, wherein
- the controller is configured to:
- (i) turn off the first switch, (ii) turn on the second switch, and (iii) turn off the inter-system switch, in response to an ignition switch being turned off;
- and
- (i) turn off the second switch while the first switch is turned off, (ii) then turn on the first switch while the load is capable of keeping operation by electric power of a capacitor of the load, and (iii) turn on the inter-system switch when turning on the first switch, in response to the ignition switch being switched from being turned off to being turned on.
A non-transitory computer-readable storage medium storing a power supply control program that causes a controller to perform a process, the process comprising
- performing on/off control of a first switch of a first system configured to supply electric power from a main power supply to a load via the first switch and a second switch of a second system configured to supply electric power from a sub-power supply to the load via the second switch,
- wherein the process further comprises:
- (i) turning off the first switch, (ii) turning on the second switch, and (iii) turning on an inter-system switch coupled between the first system and the second system, in response to an ignition switch being turned off;
- and
- (i) turning off the second switch while the first switch is turned off, (ii) then turning on the first switch while the load is capable of keeping operation by electric power of a capacitor of the load, and (iii) turning on the inter-system switch when turning on the first switch, in response to the ignition switch being switched from being turned off to being turned on.
A power supply control device comprising:
- a first system configured to supply electric power from a main power supply to a load via a first switch;
- a second system configured to supply electric power from a sub-power supply to the load via a second switch;
- an inter-system switch coupled between the first system and the second system;
- and
- a controller configured to perform on/off control of the first switch and the second switch, wherein
- the controller is configured to:
- (i) turn off the first switch, (ii) turn on the second switch, and (iii) turn off the inter-system switch, in response to an ignition switch being turned off;
- and
- upon the ignition switch being turned on, (i) firstly turn off both of the first and second switches temporarily, (ii) then turn on the first switch while the second switch is maintained turned off and while the load is capable of keeping operation by electric power of a capacitor of the load, and (iii) turn on the inter-system switch when tuning on the first switch.
Dependencies are inferred from the claim text.