Title:
POWER SUPPLY CONTROL CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2024/095656
Kind Code:
A1
Abstract:
Provided is a power supply control circuit that makes it possible to extend the power supply time from a power supply to a load when a main power supply such as a sub-battery fails. The power supply control circuit (1) comprises: a first circuit (2) connecting a main battery (52) and a sub-battery (53) via a DC/DC converter (20); a second circuit (3) connecting a main battery (52) and a load (54); and a third circuit (4) connecting the sub-battery (53) and a load (54) via a semiconductor switch (32). In addition, the semiconductor switch (32) is turned on and supplies power from the sub-battery (53) to the load (54) when the main battery (52) fails, and the direction leading from the load (54) side to the sub-battery (53) serves as the forward direction of a parasitic diode (32a) in the semiconductor switch (32). Furthermore, the DC/DC converter (20) boosts voltage from the main battery (52) and supplies the result to the sub-battery (53).
Inventors:
MASUI HIDEAKI (JP)
Application Number:
PCT/JP2023/035852
Publication Date:
May 10, 2024
Filing Date:
October 02, 2023
Export Citation:
Assignee:
YAZAKI CORP (JP)
International Classes:
H02J1/00; B60R16/02; H02J7/34; H02J9/06
Domestic Patent References:
| WO2022114197A1 | 2022-06-02 |
Foreign References:
| JP2012135206A | 2012-07-12 | |||
| JP2019146305A | 2019-08-29 |
Attorney, Agent or Firm:
TAKINO, Fumio et al. (JP)
Download PDF: