Disclosed is a plug-in vehicle with secondary DC-DC converter. A vehicle includes a traction battery, an auxiliary battery, a charger, and two DC-DC converters. A first DC-DC converter is connected between the traction battery and the auxiliary battery through a main contactor. A second DC-DC converter is connected between the charger and the auxiliary battery. The charger is configured to charge the auxiliary battery via the second DC-DC converter when the charger is receiving power. The second DC-DC converter is configured to charge the auxiliary battery when the first DC-DC converter is disconnected from the traction battery. The second DC-DC converter can charge the auxiliary battery independent of the charger charging the traction battery. The second DC-DC converter may be configured to generally maximize power conversion efficiency in a range of power outputs associated with charging the auxiliary battery.
Plug-in vehicle with secondary DC-DC converter
2015-04-29
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |