How to judge whether the electric vehicle controller is short-circuited or the motor has entered water?

Electric vehicles are popular among consumers because of their environmental protection and convenience. But when the electric car breaks down, everyone is at a loss. Today the author tells you how to judge whether the electric vehicle is short-circuited in the controller or the motor is flooded? 　　 When the electric vehicle is not powered on, the rear wheel is tight. This problem is very common. The general performance is that it is not powered on. Once the rear wheel is powered on It will suck very tightly, and push the electric car forward with great resistance. This situation may be caused by a short circuit caused by water in the electric vehicle controller. The battery is full, but the motor will stop when the electric door is increased. The general method is to connect the DC voltage file of a multimeter to the electric vehicle charger jack, and check the battery voltage. If the voltage is normal when not riding, but Increase the switch. After the voltage drops to 42V, the motor trembles and the speed drops rapidly, indicating that this is a problem with the electric vehicle battery; but if the connection between the battery box fuse and the battery is good, increase the switch, the voltage is almost no Decrease, the front means the voltage drops, and the motor stops and runs when it stops, indicating that the lock control switch and its circuit are caused; but if the switch is increased, the voltage hardly drops, and the front means the voltage does not drop, and the motor runs when it stops. , It means that the controller's current protection is working; 　　 the brake handle does not return, no matter the brake is used, the common brake handle does not return, causing the automatic power-off device. At this time, no matter how fast you accelerate, you can’t drive. Check the brakes and move back and forth. That's it. How to judge whether the electric vehicle is short-circuited in the controller or water has entered the motor. If the electric vehicle cannot move, you can turn the motor wheel with your hand to see if there is any sense of obstruction. If there is no abnormality when walking, it means that the motor is okay. It should be caused by water in the controller plug. of. You need to unplug the battery of the electric vehicle and find the controller to shake off the water and dry it with a towel to restore it to its original position.　　Removal of common failures of spark plugs　　The common failures of spark plugs are mainly ablation, overheating, carbon deposits, etc. Once the failure can directly affect the operation of the engine, it will cause unstable engine operation, reduced horsepower, and difficulty in starting. When the spark plug electrode is severely ablated in a short period of time, check whether the heating value of the spark plug meets the specified requirements. If the heating value is low, you must replace the spark plug with a higher heating value. Prev: Common mistakes in battery charging, five ways to tell you how to break it!