Key points for the maintenance and upkeep of the charging gun tip of a charger

The key points for the maintenance and upkeep of the charging gun tip of a charger mainly include the following aspects:

First, daily cleaning and inspection

Regular cleaning

Cleaning frequency: High-usage gun tips should be cleaned every 50 charges, while regular gun tips should be cleaned once a week.

Cleaning method: Dip a non-woven cloth in anhydrous alcohol and focus on wiping the 7 high-voltage contacts to remove dust and dirt.

Stubborn oxide layer treatment: Gently sand with fine sandpaper of 2000 mesh or above, applying even force to avoid damaging the contact surface. After grinding, wipe again with alcohol.

Visual inspection:

Check whether the gun head housing is damaged, deformed or the waterproof device is abnormal.

Check whether the connection between the gun tip and the charging pile and the vehicle charging port is tight, and whether there is any looseness or poor contact.

Second, precautions for use and operation

Correct plugging and unplugging:

Align with the charging port before inserting. Do not shake or forcibly pull out the gun.

When pulling out the gun, pay attention to the position of the handle latch to avoid rough dragging.

After charging is completed, press the lock button and slowly unplug the plug to prevent damage to the anti-theft function.

Environmental protection

Rainy season: Spray anti-oxidant (such as WD-40 Professional Edition) to prevent oxidation of metal contacts.

On sand and dust days: Install dust covers or magnetic protective covers to prevent sand and dust from entering the interior of the gun head.

Severe cold period: Apply low-temperature Grease (such as Chevron Grease) to ensure normal plugging and unplugging in a low-temperature environment.

Storage conditions:

When not in use, store the charging gun in a dry, well-ventilated place away from direct sunlight to prevent moisture and aging.

Third, regular maintenance and inspection

Internal inspection:

After turning off the power, remove the outer casing of the charging gun, check if the wires and plugs are loose or broken, and replace them in time if there are any problems.

Check whether the internal circuit boards and components are damaged or aged to ensure the normal operation of electronic components.

Contact point detection

Visual inspection: Observe whether there are any abnormal conditions such as discoloration, rust, or pits on the metal contact surface.

Multimeter test: Measure the contact point resistance to determine if there is a poor contact problem.

Spring plate inspection:

Gently touch the spring sheet with a pair of pointed-nose pliers to observe whether it bounces back smoothly.

If the spring sheet is deformed or broken, the original parts need to be replaced. When slightly deformed, the Angle can be carefully adjusted to restore elasticity.

Fourth, fault handling and maintenance

Common faults:

The charging gun cannot be locked after being inserted: Check if the metal contacts are oxidized or blocked by foreign objects, and clean or polish the contacts.

Severe overheating of the gun tip: Check if the internal cables are broken, test the continuity with a multimeter, and repair or replace the cables.

Abnormal flashing of the indicator light: Check if the connection is stable and clean the dirt on the contacts.

Maintenance steps:

Power-off operation: Ensure the power of the charging pile is turned off, unplug the gun head and let it stand for 10 minutes to release the residual current.

Protective measures: Wear insulating gloves and avoid direct contact with metal contacts.

Maintenance tools: Prepare tools such as screwdrivers, point-nose pliers, alcohol wipes, fine sandpaper, and multimeters.

Professional maintenance

If there is a malfunction of the circuit board or high-voltage components, do not handle it by yourself. It is recommended to contact a professional service provider or the after-sales service of the charging pile brand.

Fifth, preventive measures and suggestions

Avoid violent operations:

Do not plug or unplug the charging gun roughly to prevent damage to the contacts and spring plates.

When charging, the vehicle should be parked in a well-ventilated area to avoid high temperatures and direct sunlight.

Replace aged parts:

For charging guns that have been in use for more than two years, it is recommended to check the condition of the spring plates and cables, and replace them if necessary.

User Education

Play the correct operation demonstration video in a loop on the charging pile screen, set up a comparison stand for "intact gun heads" and "damaged gun heads", and give points rewards to car owners who operate in a standardized manner.