Method 1: Check the inlet and outlet of the charge, the electric vehicle is not charged, the first thing to be excluded is the charger, check the inlet end, only need to plug in the power, the charger can be soft start the red light, then, it is normal, on the contrary, no light or green light, the charger is faulty.
To check the output end, you need to use a multimeter, plug in the input end, and test the voltage of the output end. If the voltage is not checked, it is a fault of the output end, and directly replace the charger.
Method 2: Check the battery interface, check the battery charging port with a multimeter, detect whether there is voltage output, if there is no voltage, there is a line fault, go to the repair shop directly to check and replace.
Method 3: There is a common situation, our battery is often composed of multiple batteries, electric vehicle batteries are mostly 12V for one, 48V is 4 batteries, then, when a section of the battery due to bulge, impact, undervoltage, line body fall off, etc., will also lead to no charge.
This method of charging is also relatively simple, generally reflected in plugging in the red light immediately to green, or fully charged, but the dashboard still shows that it is not full, which must consider a battery failure, replace this battery can save a lot of battery replacement costs.
If the electric vehicle battery is not charged, first check whether the charger is connected properly and whether the plug is loose or damaged. After ensuring that the connection is secure, check that the charger is working properly and may need to be replaced or repaired.
Second, check the battery for damage, such as falling wires or damaged joints, and repair or replace the relevant parts. Also check whether the controller is faulty, if there is a fault need to find a professional repair.
Also, check that the battery is fully charged and may need to be charged for some time before it can be restored. If these methods do not work, it is recommended to find a professional technician to repair.
1, battery life: battery life ends. Solution: Replace or repair the battery. 2. Fuse: The fuse in the battery safety tube is broken or the contact between the battery safety tube and the safety seat is poor. Solution: Replace the fuse. Adjust the position of the two so that they are in good contact, or replace the fuse.
3. Voltage problem: the electrical appliance has no output voltage or low output voltage, or the charger has poor contact with the AC 220V power supply. Solution: Replace or repair the charger; Plug in the power supply. 4. Abnormal indicator light: Abnormal charger indicator light causes false full. Solution: Replace or repair the charger. This is the electric car battery does not charge the solution.
The solution for electric vehicle battery charging is as follows
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The first activation method can try fast charging, in short, push the electric vehicle to the fast charging station for two hours. When the charge is finished. Use a multimeter to measure, if the voltage rises, then use the original charger to charge, so that in general, the battery can be activated.
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The second activation method can be parallel repair method, as the name suggests is to find a group of new batteries with the same primary battery model, and the new battery and the old battery in parallel, and then through the new battery discharge, after several rounds of cycles, the old battery performance will slowly recover, and there is a certain probability that it can be reactivated.
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The third activation method can be used to charge the small, that is, to charge the small power charger first, and then use the original charger to charge. Taking 72V electric vehicles as an example, a 60V charger can be used to charge for half an hour, and then the original 72V charger is used to charge, so there is a certain chance that the battery can be reactivated.