In a drive unit including a motor, an inverter, a first electric storage device, a step up-down converter, first and second capacitors, a DC-DC converter, and a relay, the DC-DC converter is driven, while a target duty ratio of the step up-down converter is set such that a total loss of the step up-down converter and the DC-DC converter becomes larger than a maximum loss value of the step up-down converter, and the step up-down converter is controlled, when the relay is turned off to discharge charge of the first capacitor and the second capacitor.
DRIVE UNIT, VEHICLE, AND CONTROL METHOD FOR DRIVE UNIT
2018-06-28
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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |