The power supply device includes a low voltage battery (1), a high voltage battery (2), a starter generator (6), a DC-DC converter (7), a changeover switch (40), and a controller (20). The changeover switch 40 switches a connection of the starter generator to the low voltage battery or the high voltage battery. When the DC-DC converter is normal, the control device controls the changeover switch to connect the starter generator to any one of the batteries of the high voltage battery and the low voltage battery and connects the other battery of the high voltage battery and the low voltage battery to the starter generator via the DC-DC converter, and when an abnormality or a failure has occurred in the DC-DC converter, the control device controls the changeover switch to connect the starter generator to the other battery without via the DC-DC converter and controls an output of the starter generator corresponding to the connected other battery.
VEHICLE POWER SUPPLY DEVICE AND CONTROL METHOD THEREFOR
STROMVERSORGUNGSVORRICHTUNG FÜR EIN FAHRZEUG UND STEUERVERFAHREN DAFÜR
DISPOSITIF D'ALIMENTATION ÉLECTRIQUE DE VÉHICULE ET PROCÉDÉ DE COMMANDE ASSOCIÉ
2022-08-03
Patent
Electronic Resource
English
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / 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 |
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