Title:
POWER-SUPPLY CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/204219
Kind Code:
A1
Abstract:
The present invention includes: A DC/DC converter that, serving as a back-up for a first power supply, supplies power from a second power supply to a relay; a third power supply that is charged by the first power supply and outputs the charged power to the relay; a switch of the third power supply; and a control unit that controls the DC/DC converter, the switch, and the second power supply. In a state where the control unit turns OFF the DC/DC converter, and turns the switch ON to cause the third power supply to be in a charging state, the control unit: turns the switch OFF to stop the charging of the third power supply, if the voltage of the third power supply is at least a first threshold; turns the switch ON to restart charging of the third power supply, if the voltage of the third power supply is no more than a second threshold which is lower than the first threshold; and turns the DC/DC converter ON, if the voltage of the third power supply is no more than a third threshold which is lower than the second threshold.
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Inventors:
NISHIWAKI KAZUTAKA (JP)
Application Number:
PCT/JP2023/015520
Publication Date:
October 26, 2023
Filing Date:
April 18, 2023
Export Citation:
Assignee:
VEHICLE ENERGY JAPAN INC (JP)
International Classes:
H02J7/34; B60L1/00; B60L3/00; H02J7/00; H02J9/06
Foreign References:
| JPH0946921A | 1997-02-14 | |||
| JP2007089350A | 2007-04-05 |
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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