Solutions to unstable current encountered during the use of electric vehicle chargers

When encountering the problem of unstable current during the use of an electric vehicle charger, the following solutions can be adopted:

First, check the power supply and charging equipment

Ensure the stability of the power supply voltage

Unstable current may be related to fluctuations in power supply voltage. Check whether the grid voltage in the charging area is stable to avoid charging during periods with significant voltage fluctuations.

If conditions permit, a voltage regulator or UPS (Uninterruptible Power Supply) can be used to stabilize the power supply voltage.

Check the charging equipment:

Confirm whether there are any faults or aging phenomena in the charging equipment such as chargers, charging cables and sockets. For instance, problems such as aging of the internal wiring and poor contact of the charging cable may all lead to unstable current.

If any problem with the charging equipment is found, a new charger, charging cable or socket should be replaced in time.

Check the charging pile (if a public charging pile is used) :

Confirm whether the charging piles are regular and reliable, and avoid using inferior or faulty charging piles.

Check whether the display screen of the charging pile is showing normally, whether the charging interface is loose, and whether there are any abnormal sounds during charging, etc.

Second, check the vehicle battery and battery management system

Check the battery status:

Battery aging or damage may cause unstable charging current. Regularly check the battery's power, voltage, temperature and other parameters to promptly identify any battery issues.

If the battery performance drops significantly and fails to meet the daily usage requirements, it may be necessary to consider replacing the battery.

Check the Battery Management System (BMS) :

The BMS is responsible for monitoring and managing the battery status. If the BMS malfunctions, it may misjudge the battery's status, resulting in unstable charging current.

Make sure the BMS software is the latest version to eliminate current fluctuations caused by software issues. If the BMS malfunctions, it should be promptly taken to a professional repair shop for maintenance and handling.

Third, improve the charging environment and habits

Select an appropriate charging environment:

Try to avoid charging under extreme temperature conditions. Both high and low temperatures may affect the stability of the charging current.

If charging is carried out under extreme weather conditions, corresponding protective measures can be taken, such as using insulation or cooling equipment.

Form good charging habits:

Avoid frequent charging and over-discharging. Try to charge the battery only when its power drops below a certain level (such as 30% to 40%).

Do not frequently charge the battery to 100%. It is recommended to set the upper limit of charging at around 80% to 90%.

During the charging process, try to avoid using high-power devices such as air conditioners to reduce the load on the battery.

Fourth, professional diagnosis and maintenance

Seek professional repair:

If none of the above methods can solve the problem of unstable current, it is recommended to send the vehicle to a professional maintenance station for detailed inspection and repair.

Maintenance personnel will use professional equipment and technical means to conduct a comprehensive inspection of the vehicle's charging system, battery system, etc., identify the problems and carry out repairs.

Fifth, preventive measures

Regular maintenance and inspection:

Regularly maintain and inspect vehicles and charging equipment to promptly identify and address potential issues.

Regularly inspect the charging lines, charging interfaces and other components for any signs of aging or damage, and replace the damaged parts in a timely manner.

Use regular accessories:

When replacing chargers, charging cables and other accessories, one should choose products from regular brands and reliable quality to avoid using inferior accessories that may cause damage to the vehicle battery.

In summary, addressing the issue of unstable current encountered during the use of electric vehicle chargers requires a multi-faceted approach, including inspecting the power supply and charging equipment, checking the vehicle battery and BMS, improving the charging environment and habits, seeking professional diagnosis and maintenance, and taking preventive measures, etc. By taking comprehensive measures, the problem of unstable current can be effectively solved, ensuring the normal use of electric vehicles and the battery life.