Regarding the sealing test of new energy vehicles, Hirays Technology has mentioned in previous case sharing that in the field of new energy vehicles, the safety of use of any component must be ensured.In order to ensure the safety of people using the charging gun control box, manufacturers will conduct sealing tests on the charging gun control box during production.

This time we will share the air tightness test case of the new energy vehicle charging gun control box for your reference. We hope it can be helpful to everyone.

(Sealing tester for new energy vehicle charging gun control box)

1. The appearance of the new energy vehicle charging gun control box and the display of detection difficulties

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

(New energy vehicle charging gun control box)

2. Due to the high precision of the instrument, the wires at the front and rear ends make it impossible to conduct an overall fixed inspection during inspection, which is disadvantageous for direct inspection. It is impossible to judge the air tightness of the charging gun through the gas leakage value.

2. Breakthrough in the difficult sealing test of the car charging gun control box

1. In view of the special shape of the control box, Hirays specially customized a special mold. The entire mold is cast according to the overall shape of the control box. After the control box is put in, it snaps just right. The front and rear connecting wires are placed on the grooves at the front and rear of the mold, so that a closed space can be formed by closing the upper and lower molds during inspection;

(Details of the sealing test mold for the new energy vehicle charging gun control box)

2. Place the control box into the tooling mold and connect it to our instrument. There is a valve island, gas tank and other components inside the instrument as well as the program we have set. After the connection is made, press the start button when inspecting 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 based on the gas saturation inside the mold.

(Details of the sealing test of the new energy vehicle charging gun control box are displayed)

3. If the control box is not sealed and air leakage occurs, the leakage value displayed in the instrument will become larger and larger, and the pressure value will decrease at the same time.At this time, it can be determined whether the control box is leaking, and the instrument test result will also show NG, which means the air tightness test failed.If the tested control box does not leak, the gas in the tooling mold will be in a constant state after inflation. The pressure value and leakage value displayed on the instrument are also stable. The instrument test result will display OK, indicating that the sealing test has passed.

(New energy vehicle charging gun control box tooling display)

3. Sealing tester parameters of car charging gun control box

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