And mobile direct-current power supply utilizes automobile power

The utility model discloses a mobile direct-current power supply utilizing automobile power. The system comprises a station DC system, a mobile power supply, a power supply automatic switching systemand an automobile power supply system, the station DC system is connected with the mobile power supply, the mobile power supply is connected to the automobile power supply system through the power supply automatic switching system, and the power supply automatic switching system is connected to the occupation DC system through a power supply acquisition cable. According to the utility model, onlywhen direct-current voltage loss in the station is caused by alternating-current voltage loss in the station, the direct-current standby power supply is automatically put into operation, so that the risk that each direct-current device quits operation due to direct-current voltage loss in the station is avoided, and the operation reliability of the device is improved. 本实用新型公开了一个利用汽车动力的移动直流电源，包括站用直流系统、移动电源、电源自投系统和汽车电源系统，站用直