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Example sharing of sealing test for charging gun control box of new energy vehicle

As for the sealing test of new energy vehicles, Harris technology has mentioned in the past case sharing. In the field of new energy vehicles, no matter any component, it must ensure the safety of its use. In order to ensure the safety of charging gun control box, manufacturers will test the sealing of charging gun control box during production.

This time, we will share the air tightness test case of new energy vehicle charging gun control box for your reference, hoping to be helpful to you.

(sealing tester for charging gun control box of new energy vehicle)

1、 New energy vehicle charging gun control box shape and detection difficulties display

1. The overall shape of the control box for air tightness test is regular, wrapped with black waterproof shell material, and the front and rear ends are wires connecting external devices, so the overall precision is high;

(charging gun control box of new energy vehicle)

2. Due to the high precision of the instrument, the wire at both ends of the front and the back makes it impossible to carry out the whole fixed detection, which is unfavorable to the direct detection, and it is unable to judge the air tightness of the charging gun through the gas leakage value.

2、 The breakthrough of sealing test difficulty for control box of automobile charging gun

1. According to the special shape of the control box, Harris has specially customized a special mold. The whole mold is cast according to the overall shape of the control box. After the control box is put in, it is just clamped well. The front and rear ends of the butt wires are placed on the front and rear grooves of the mold, so that the upper and lower molds can be closed to form a closed space during testing;

(mold details of tightness test for control box of new energy vehicle charging gun)

2. Put the control box into the tooling die and connect it with our instrument. There is a valve island, air tank and other parts inside the instrument and the program we set. After connecting, press the start button when checking the control box. At this time, the upper and lower molds begin to close, and clean gas without impurities is filled into the mold. The instrument display screen will judge the sealing degree of the control box through the gas saturation inside the mold.

(details of sealing test for charging gun control box of new energy vehicle)

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

(new energy vehicle charging gun control box tooling display)

3、 Parameters of sealing tester for control box of automobile charging gun

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