The invention provides a control circuit for high-voltage power utilization safety of an electric vehicle. The control circuit comprises plural high-voltage connectors with interlock switches, a vehicle control unit VCU, a battery pack and a high voltage distributing box, wherein after the interlock switches of the plural high-voltage connectors are mutually connected in series, one ends of the interlock switches are accessed into a power source of 12V, and the other ends of the interlock switches are accessed into the vehicle control unit VCU; the battery pack comprises a battery management system BMS and a master positive contactor, the battery management system BMS is connected with the vehicle control unit VCU through a CAN bus, and after the battery management system BMS is connected with control coils of the master positive contactor in series, the battery management system BMS is grounded; the positive pole of the battery pack is connected to the positive pole of the high voltage distributing box through a normally open contact of the master positive contactor, and the negative pole of the battery pack is connected with the negative pole of the high voltage distributing box. The safety control circuit disclosed by the invention collects connection conditions of all the high-voltage connectors of the vehicle to control the battery pack to supply the high-voltage power, so that the high-voltage power utilization safety of the vehicle is improved.
Control circuit for high-voltage power utilization safety of electric vehicle
2015-10-07
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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