A storage battery device of an embodiment is to be mounted on a vehicle for power supply to an on-vehicle device, and includes: a first battery unit including battery cells connected in series between a first input output voltage charge-discharge terminal pair to supply low-voltage power via the first input output voltage charge-discharge terminal pair; a second battery unit connected in series to a high potential side of the first battery unit, including battery cells connected in series between the first battery unit and a second input output voltage charge-discharge terminal to supply high-voltage power in cooperation with the first battery unit via the first input output voltage charge-discharge terminal on a low potential side and the second input output voltage charge-discharge terminal; and a direct-current voltage converter that performs DC voltage conversion of a power supply from the second battery unit, to be able to supply power via the first input output voltage charge-discharge terminal pair. The storage battery device can thus simultaneously supply low-voltage power and high-voltage power with maintained reliability.
STORAGE BATTERY DEVICE
SPEICHERBATTERIEVORRICHTUNG
DISPOSITIF DE BATTERIE D'ACCUMULATEURS
2022-07-27
Patent
Elektronische Ressource
Englisch
IPC: | 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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |