A power conversion device in an electric vehicle that uses a short-circuit capacitor and is capable of detecting a short circuit of the capacitor by using a simple structure. The power conversion device includes an inductor connected on a main battery side with a switching member provided between the inductor and a power line. The power line connects a first capacitor and a second capacitor as well as an electric load in parallel. A controller is provided for controlling the on/off of the switching member. The first capacitor and the second capacitor are each a small capacitor configured to be short-circuited upon application of an excess voltage. The power conversion device is provided with a detection member for detecting a short circuit of any one of the first capacitor and the second capacitor. The detection member is connected in series to the first capacitor and the second capacitor.
Power conversion device in electric vehicle
2016-05-03
Patent
Electronic Resource
English
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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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