Just took over an electric car shop, do not know how to repair, do not know where to start learning, ask God
Electric vehicles in the use of the process, will inevitably occur "strike" phenomenon, understand the basic maintenance of common sense, so that you save a lot of worry. There are two steps to repair an electric car, that is, finding faults and repairing them. And the premise and key to repair is to find the fault quickly, find out the cause of the trouble, and then repair it.
Measure the battery box contact, can immediately judge because the power supply part of the car does not turn the fault. If there is no voltage display, open the power lock, instrument panel indicator light is not bright, then determine: fuse fuse broken, should replace the insurance pipe, wire fall off, welding broken ends, or should be replaced by new lines. If there is voltage display, turn on the power lock, the dashboard indicator light is not lit, then the power lock is broken, and the power switch is changed to replace the new lock.
The car does not turn (ie the motor does not turn)1, the use of electric vehicle testing instrument to test whether the motor lead voltage, can immediately determine the line and control of the fault line. The result of the measurement is that there is voltage, it is decided that the motor is broken or the controller leads to the lead fault of the motor, so it should be excluded. If there is no voltage in the measurement result, the control line is faulty and the next check should be carried out.2. Disconnect the brake plug of the controller, then turn the electric switch. When the car rotates, it is decided that the brake switch is out of order and that it has caused a short circuit fault. A new brake switch should be replaced. If the car does not turn, then use a good speed switch, replace the original transfer. If the car rotates, then determine: the original speed, turn the handle has been bad, causing the electric car does not turn, should be replaced by new controller.
Open the power lock, the car does not stop (shock car phenomenon), can not brake the carTest method is to speed up the controller, the plug is disconnected, you can immediately determine the speed switch or controller failure. If you disconnect the plug speed control switch, turn on the switch to lock the car stopped, judge: to the governor has been bad; if you disconnect the plug to the governor, the electric door lock is opened, the car turn, determine the controller has been bad, should be renewed.
