Car charging gun control box is one of the products in the field of new energy vehicles. During production, manufacturers will pay more attention to its stability and safety, and conduct air tightness testing for it. This is also one of the important indicators to ensure the safety of consumers.Hirays Technology has provided many mature solutions for air tightness testing in the field of new energy vehicles, and has also made major breakthroughs in testing technology.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.

(Air tightness detector of car charging gun control box)

1. Demonstration of difficulties in detecting car charging gun control box

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

(car 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 perform an overall fixed inspection during inspection, which is detrimental to direct inspection. It is impossible to judge the air tightness of the charging gun control box through the gas leakage value.

2. Demonstration of the air tightness testing process of the car charging gun control box

1. In view of the special shape of the charging gun control box, Hirays specially customized a special mold. The entire mold is cast according to the overall shape of the charging gun 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 air tightness testing mold for the car charging gun control box)

2. Place the charging gun 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.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 air tightness testing of car charging gun control box)

3. If the charging gun 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 charging gun 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 air tightness test has passed.

3. Air tightness detector parameters of car charging gun control box

The copyright belongs to Hirays Technology. Reprinting and counterfeit originality are prohibited. Any violation will be at your own risk.