Repair and maintenance of unstable charging power of chargers

The repair and maintenance of unstable charging power of electric vehicle chargers need to start from aspects such as power supply, equipment, lines, batteries, environment and system Settings. The following are specific measures:

First, related to power supply

Check the power supply voltage: Changes in grid load and voltage fluctuations may cause unstable charging power. For instance, during peak electricity consumption periods, the grid voltage may drop, thereby affecting the output power of the charger. A voltmeter can be used to detect the power supply voltage. If the voltage is abnormal, contact the power department or use a voltage stabilizing device.

Maintain power lines: Regularly inspect power lines to check for any signs of aging, damage, poor contact, etc. If any problem is found, replace the circuit in time or repair the parts with poor contact.

Second, equipment-related

Check the charger:

Damage to the electronic components inside the charger, such as faults in the transformer or control chip, can lead to unstable output voltage or current. The output voltage and current of the charger can be detected by professional equipment. If they are unstable, the charger needs to be repaired or replaced.

Pay attention to the heat dissipation of the charger and keep it well-ventilated. If the charger has poor heat dissipation, it may cause the internal components to overheat, affecting performance. The debris around the charger can be cleared to ensure that the heat dissipation holes are unobstructed.

Check the charging piles:

Quality issues of charging piles, such as unreasonable internal circuit design and substandard component quality, may lead to unstable current during the charging process. Choose charging piles of regular brands and reliable quality.

Ensure that the power of the charging piles matches the charging demands of electric vehicles. If the power of the charging pile is too low, it will lead to insufficient power supply and unstable current. Excessive power may cause certain damage to the battery if used for a long time.

Check whether the charging interface is clean and in close contact. Clean the dust and debris at the interface appropriately to avoid poor contact causing unstable current transmission.

Third, related to the lines

Check the charging circuit. Issues such as excessive impedance, poor contact, short circuit, damage, and loose plugs can all weaken the stability of the power supply and thereby reduce power. Replace the circuit with a lower impedance, repair the parts with poor contact, deal with short circuits and damage problems, and ensure that the plug connection is tight.

Fourth, battery-related

Check the battery status: Battery aging, capacity decline, internal short circuit or excessively high or low temperature can all affect the charging power. Professional equipment can be used to check the health status of the battery. If the battery is severely aged, it needs to be replaced in time.

Maintain the battery management system: The battery management system is responsible for monitoring and managing the battery status. If it malfunctions, such as sensor failure or software errors, it will cause unstable charging current. Regularly inspect and maintain the battery management system. Once any problem is found, promptly take it to a professional repair shop for maintenance and handling.

Fifth, environment-related

Control temperature: Harsh conditions such as high temperature and high humidity may interfere with the normal operation of the charger. Under extreme temperature conditions, try to avoid prolonged charging or choose appropriate temperature control measures, such as charging in a room with a suitable temperature.

Avoid interference sources: Some external interference sources, such as strong electromagnetic interference and lightning, can also affect the stability of the charging current. During the charging process, try to avoid charging near these interference sources or choose shielding measures.

Sixth, related to system Settings

Some electric vehicles are equipped with a charging protection function. Once the battery is fully charged, the current will automatically decrease, causing fluctuations in the charging power. The charging Settings of the vehicle can be checked and adjusted according to actual needs.