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Waterproof test case sharing of charger

Charger is an indispensable tool for people in modern life. Whether it's traveling or resting at home, it will be used to charge. As the transmission medium of current board, its waterproof is very important. If its waterproof is not good, it is easy to lead to the risk of electric leakage in the process of use. Therefore, before the charger leaves the factory, businesses will carry out waterproof test on it. This time, we will share the waterproof test of the charger, hoping to help you.

Waterproof tester for charger

1、 Shape analysis of charger

1. The waterproof test is conducted on an ordinary charger. The whole charger is wrapped with black shell material. The shell material has a high degree of precision. The back of the charger is connected with the wire to transmit current, and there is no obvious butt joint gap;

Charger

2. There are two docking devices in front of the charger. The whole charger is irregular in shape, so it can't be detected directly. The traditional waterproof test method can't be applied to its overall shape.

2、 Breakthrough of waterproof test difficulty of charger

1. Due to the higher precision and irregular shape of the whole charger, Harris specially customized a mold for the charger. As long as it is placed in the mold, the whole shape is just right. The wire is vertically placed with a special groove for clamping, and the upper and lower molds will be closed to form a closed space when testing;

Charger waterproof test mold details

Waterproof test tooling details of charger

2. After the charger is put into the tooling die, there is a valve island, air tank and other parts inside the instrument and the program we set. After connecting, when testing the charger, press the start button. At this time, the upper and lower molds begin to close, the instrument will fill the mold with clean gas without impurities through the conduit, and the instrument display screen will judge the waterproof degree of the charger through the gas saturation inside the mold;

Waterproof test tooling of charger

3. If the charger is not sealed and air leakage occurs, the leakage value in the instrument will show more and more data, and the pressure value will drop. At this time, it can determine whether the charger is leaking, and the instrument test results will also show ng, which means that the air tightness test fails. If the charger tested does not leak, the gas in the tooling die will be in a constant state after inflation, and the pressure value and leakage value displayed on the instrument are also stable. The test result of the instrument will display the word OK, indicating that the waterproof test has passed.

3、 Parameters of charger waterproof tester

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