Maintenance of electric vehicle controller

The 1. should always check the plug-in connection to see if there is any looseness, poor contact or detachment.

When the display of the display panel is abnormal, the connector should be checked first. No matter how it is operated, the iiu will not go. The first thing that comes to mind is the battery wiring. Secondly, check the connector of the motor or Hall sensor (some do not use connectors or the connector is in the controller box). Failure of the speed control bar and failure of the brake to cut off power are mostly caused by problems with the connector.

2. in rainy days, to prevent water circuit. Water entering the controller may cause all short circuits, burning of components, scrapping of the entire circuit board, and even failures such as flying cars, braking and continuous power failure during use.

3. keep the controller dry. A simple way to determine the dryness of the controller is to use a multimeter to measure the positive and negative resistance of each interface of the circuit board and the resistance value between each interface. In general, the positive and negative resistances of each interface itself should not be constant. If all the resistances are the same (0 or small), and the resistance between each interface is 0 or close to 0, the results of repeated experiments are consistent, indicating that the controller is not dry and should be dried until the resistance between each interface is ∞, the interface itself becomes larger and the resistance in the positive and negative directions is obviously different, indicating that the controller is dry.

For users with some common sense of air, after the controller enters water, the controller box cover should be opened first, excess water should be removed, the front and back sides should be carefully dried with cotton balls, dried in air or baked at low temperature to dry, and the circuit board will not leave corrosive substances.

At present, most of the controller shells are made fully sealed, and some of the controllers are made modular and fully sealed. However, the controller is required to work with temperature changes. Air with moisture may still condense on the circuit. Short-circuiting of dense nodes of the circuit will burn down components and cause faults. Attention should still be paid during use.