With the development of the new energy vehicle industry and consumer demand for the performance of new energy vehicles, automotive wiring harnesses have been transformed from simple power lines into signal lines that can meet both energy supply and "neural network system" realization of various functional molds.Therefore, in order to ensure the quality of automobiles and ensure the safety of production and driving, manufacturers must conduct air tightness testing of wiring harnesses before leaving the factory.Next, Hirays Technology will introduce to you the issues related to air tightness testing of new energy vehicle wiring harnesses. The following content is an introduction to the solution.
1. The importance of air tightness testing of new energy vehicle wiring harnesses
Automotive wiring harness is one of the most critical components inside the car. Its quality, safety and reliability have a decisive impact on the quality of the car.If the air tightness of the wiring harness is not good, it may cause signal transmission failure and functional equipment loss of function; or it may cause short circuits and fires when exposed to water, or insulation layer failure and leakage, etc.Therefore, the air tightness of automobile wiring harness is one of the focus issues in the production of new energy vehicles.
2. Difficulties in air tightness detection of new energy vehicle wiring harnesses
New energy vehicle wiring harnesses are mainly composed of wires, connectors, wrapping tapes and other auxiliary materials. They are the carriers for controlling vehicle electrical signals. They have complex structures and diverse functions, and the parts to be detected and air tightness requirements are quite different.In addition, the domestic automobile wiring harness detection system has a single function, backward means, and foreign automobile wiring harness detection is expensive, etc., which have caused detection difficulties.
3. Hirays Technology New Energy Vehicle Wiring Harness Air Tightness Tester
In order to solve the above detection difficulties and fill the gap in the market of new energy vehicle wiring harness air tightness testers, Hirays Technology has developed a new energy vehicle wiring harness air tightness tester based on the characteristics of the wiring harness. The following are actual photos of the product.
3. Key points for air tightness testing of Haris Technology’s new energy vehicle wiring harnesses
Because the wire harness is not easy to fix, a corresponding mold needs to be fixed during testing to facilitate air tightness testing.Put the wire harness that needs to be tested for air tightness into the mold, and then inflate the wire harness. The changes felt by the precision pressure sensor of the wire harness air tightness testing equipment are transmitted to the detection system. Finally, after a series of calculations, the gas leakage value can be obtained. Based on the leakage value, the sealing performance and IP waterproof level of the wire harness can be detected.This detection method is not limited to the type and grade requirements of the wire harness. It can detect different wire harnesses by combining different molds and system parameter settings, which is very suitable for full-line sealing testing.(The picture below shows the details of the air tightness detection of one end of the wiring harness by this equipment)
Detailed view of Hirays Technology new energy vehicle wiring harness air tightness detector
4. Related functions of new energy vehicle wiring harness air tightness detector
1. This tester can support leakage testing methods such as leakage testing, obstruction testing, positive pressure testing, and negative pressure testing. It has a wide testing range and users can choose according to their own testing needs.
2 , Using a large-size touch screen as the human-machine interface, you can easily monitor the test results and set various parameters during the waterproof test process.
3 . It has an alarm function for qualified and unqualified products, which can eliminate the possibility of manual misjudgment and misdetection.
4 , with 4-channel switch input and 8-channel relay output, it can be controlled by external sensors and switch buttons, and can control external relays, solenoid valves and other actuators, conveniently realizing full automation of the test.
5 The tester has 200 user subroutines. By setting the subroutine parameters on the touch screen, the user can connect different subroutines in series to form a test process. Through the I/O interface of the leakage meter, the leakage meter can accept control signals from external sensors and control external actuators (relays, solenoid valves, etc.).Thereby automating the testing process.
6. It has a test data recording function, and the test data can be downloaded to a USB flash drive and displayed on the computer.
7. It has barcode scanning function, which can track and record defective products and repair status; host computer function, etc.
New energy vehicle wiring harness air tightness detector functional interface
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