The reason why the lithium battery cannot be charged and the green light is always on is that the charger converter or fuse is defective, the battery is defective and the wire connection is disconnected or virtually connected. .
1. The charger converter or fuse is defective.
If the electric vehicle cannot be charged and the green light is still on, you should first determine whether there is anything abnormal with the charger. It is very likely that the converter or fuse is defective. the electric vehicle is defective. The converter or fuse needs to be replaced. If the problem cannot be resolved, the only option is to replace it with a suitable charger.
2. The battery is defective.
If a small battery in the battery pack is shorted, the green light will stay on during charging.arge. You can find a maintenance technician to check whether there is any abnormality in each battery. After finding the fault, try to see if it can be repaired. If it cannot be solved, you can only replace the battery with a new one.
3. The connection cable is disconnected or poorly connected.
In addition to the two main reasons above, there may also be connection line disconnection or virtual connection. Typically, the interface is disconnected or has a virtual connection. You can try unplugging and plugging in the charger several times and charging it several times. If the green light still stays on, you can try replacing the connection cable.
Also, it should be noted that you usually cannot detect specific problems yourself. You must therefore be attentive when anomalies or malfunctionss occur in electric vehicles.
What is a lithium battery?
Lithium battery is a type of battery that uses lithium metal or alloy lithium as the negative electrode material and uses a non-aqueous electrolyte solution. The first lithium battery came from the great inventor Edison, using the following reaction: Li+MnO2=LiMnO2 This reaction is a redox reaction.
As the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal have very high environmental requirements. Therefore, lithium batteries have not been used for a long time. Today, lithium batteries have become common.
What should I do if the lithium battery cannot be charged after undervoltage?
There are usually several reasons why the vehicle lithium batteryElectric batteries cannot be charged in winter:
1. End of battery life
Solution: Replace or repair the battery.
2. The battery fuse fuse is broken.
Solution: Replace the fuse.
3. There is poor contact between the battery safety tube and the safety seat.
Solution: Adjust the position of the two to make good contact, or replace the fuse.
4. Charger has no or low output voltage
Solution: Replace or repair the charger.
5. There is poor contact between the charger and the 220V AC power supply.
Solution: Disconnect the power supply.
6. The charger indicator light is abnormal, causing the charger to become saturated.
Solution: Replace or repair the charger.
7. There is no voltage between the positive and negative poles of the dial
Solution: The connector is in poor contact or disconnected: reconnect orreplace the wire.
8. The light tube is damaged
Solution: Replace or repair the light tube.
9. There is a circuit break on the dial circuit board.
Solution: Replace or repair the instrument circuit board.
Detailed information:
Proper use can extend battery life to a certain extent.
1. Do not charge while driving.
Battery life is determined by the number of charge and discharge cycles. The more you charge and discharge, the faster the lifespan decreases. Therefore, you should not charge your electric car just for driving, but when the maximum battery life is 60-70%.
2. The charging time should not be too long
Many electric vehicle users thinkt that the longer the charging time, the greater the battery energy. This is very wrong. Charging time is usually extended within an hour after replacing the charger. Prolonged overcharging can easily cause battery deformation, water loss, etc. This directly harms battery life.
3. It's best to use smart plugs
Many electric car users charge when they get home from work, and then turn off the power when they go to work the next day. . In fact, most chargers are not guaranteed to automatically cut off power when the battery is fully charged. The best way is to buy a smart plug and set the charging time, so you can solve the problem of sleeping at night.
4. It is strictly forbidden to lose power during exercise
Theelectric bike cannot be charged until it can move, this will seriously damage the battery performance. Multiple deep discharges can significantly reduce battery life. If the battery is low on the road, it is best to pedal in advance to avoid deep discharge.
5. Do not charge at too high or too low a temperature
During the charging process, the battery itself will generate a small amount of heat. Charging at too high a temperature will increase the bottle temperature and damage battery performance. The temperature is too low. The battery acceptance capacity is low, the activity is weakened, the battery power is insufficient, the number of charging and discharging times increases, and the battery life is shortened.
The undervoltage protection function of electric vehicles is aprotection mechanism implemented to prevent excessive battery discharge while driving the electric vehicle. So, what should I do if the lithium battery cannot be charged after undervoltage?
1. If the lithium battery cannot be charged after undervoltage, the car owner can choose the fast charging method, directly use a high-power charger to charge, or directly go to a fast charging station to store the lithium battery. battery. Lithium battery. After charging, use a multimeter to check the lithium battery. Measure the battery voltage to see if the voltage has recovered.
2. You can also use lithium batteries of the same specification and use wires to connect two lithium batteries in parallel for repair. However, you need to connect the positive and negative poles when wiring and use the new lithium.Battery to replace the old battery. Discharging can restore voltage. After discharging for a period of time, you can use a multimeter to measure and check whether the voltage of the old battery has been successfully restored.
3. Or use a charger with lower power than the original one. Typically, charging takes about half an hour. Using the original charger can effectively restore the battery.