Regular testing of the waterproof performance of electric vehicle chargers

Regular testing of the waterproof performance of electric vehicle chargers is of vital importance. The following are the key points and suggestions for relevant testing:

Necessity of Testing

As a key component for the normal operation of electric vehicles, the waterproof performance of electric vehicle chargers is directly related to the safety of use and normal operation. Although chargers usually have waterproof and moisture-proof treatments, long-term use or harsh environments may lead to a decline in their waterproof performance. Therefore, regular inspections are necessary.

Testing standards and grades

IP67 waterproof rating: The charger should reach this rating, which means it can be immersed in a certain depth of water for a short time without damage. The interface part is prone to water ingress and requires special attention to waterproofing.

Charging port design: The fast charging port and slow charging port are usually designed to be concave and inclined, with insulating sealing rings around them to prevent rainwater from entering. Even if a small amount of rainwater enters, it will flow out from the drainage hole below the charging port.

Detection methods and cycles

Air tightness test: Use an air tightness tester to test the charger, simulate different water pressure environments, and check for any leakage.

Visual inspection: Regularly check the charger's casing, interfaces and sealing rings for any signs of damage or aging.

Testing cycle: Although there is no fixed testing cycle, it is recommended to conduct regular tests based on the usage environment and frequency. For instance, in damp or rainy areas, or when chargers are frequently exposed outdoors, the detection frequency should be increased.

Detection Precautions

Professional equipment: Professional waterproof testing equipment is used to ensure the accuracy of the test results.

Safe operation: During the inspection process, it is essential to strictly follow the safety operation procedures to prevent electric shock or other safety accidents.

Record and Maintenance: Establish inspection records, documenting the time, results and measures taken for each inspection. For the problems found, timely repair or replacement should be carried out.

Daily maintenance and care

Avoid soaking: Although the charger has a certain degree of water resistance, it should still be avoided to be immersed in water for a long time.

Regular cleaning: Clean the charger's casing and interfaces, remove dust and debris, and keep it in good working condition.

Proper storage: When not in use, the charger should be stored in a dry and well-ventilated place to avoid moisture or heat.