A power supply system including: a first voltage subsystem including a first battery connected to a load via a relay; a second voltage subsystem including a second battery, the second battery having a lower voltage than the first battery; and a DC/DC converter disposed between the first voltage subsystem and the second voltage subsystem, wherein before switching the relay to be closed, the DC/DC converter is configured to: provide a lower voltage than a voltage of the second battery to the first voltage subsystem; subsequently provide the voltage of the second battery to the first voltage subsystem; and subsequently increase the voltage of the second battery to be equal to a voltage of the first battery and provide the voltage of the second battery to the first voltage subsystem.
Power supply system, DC/DC converter
2023-11-08
Patent
Electronic Resource
English
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
DC-DC CONVERTER, POWER SUPPLY SYSTEM USING DC-DC CONVERTER, AND AUTOMOBILE USING POWER SUPPLY SYSTEM
European Patent Office | 2018
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