In recent years, energy issues have become a global concern, and the development of new energy has become an inevitable trend in the automotive industry. Therefore, the country has increased its support for pure electric vehicles.As the power source of power vehicles, power batteries have become the focus of the new energy vehicle industry. How to successfully produce a qualified and stable battery has become the top priority for the development of the new energy vehicle industry. The sealing test of new energy vehicle battery packs,Air tightness testingIt has also become a point of concern.

The sealing and waterproof performance of new energy battery packs need to reach a certain level.Under normal circumstances, the battery pack is relatively large in size, with a length of about 1 meter, and the internal volume of the battery is also relatively large.Therefore, it is more difficult to use compressed air to test the air tightness of battery packs than ordinary products, and there are higher requirements for the stability and precision of air tightness detectors.

Difficulties in testing new energy battery packs:

1: New energy battery packs are large in size and have large internal volumes. Generally, the air tightness testing time is more than 1 minute. The longer the testing time, the higher the stability requirements for the air tightness detector.

2: The detection of battery packs requires non-destructive testing. A battery pack is relatively expensive. If the traditional water immersion method is used for testing, it may cause internal damage to the battery pack, making secondary maintenance difficult.

Because the battery pack generally has reserved waterproof and breathable holes, the battery pack can be directly inflated for air tightness testing.Connect the air tightness tester and the waterproof breathable hole of the battery pack through the air pipe, so that a certain amount of compressed air can be charged into the interior of the battery pack, and then inflated, stabilized, and tested. In three stages, the air tightness detector detects the gas changes inside the battery pack in real time, and uses this to determine whether there is leakage in the battery pack.

Hirays air tightness detector uses imported pressure sensors and pressure regulating valves, and cooperates with the intelligent analysis and control system independently developed by Hirays. The test accuracy can reach 1pa. The algorithm has also been recognized by the national patent.

Developed by Hai RuisiAir tightness testing equipmentIt has high precision, stable testing, and mature technology in sealing and waterproof testing of new energy battery packs.We have tested the sealing performance of various battery packs, including new energy electric vehicle battery pack air tightness testing, electric bus battery pack sealing testing, and lithium battery air tightness testing.If you are interested in our air tightness testing equipment, please call Hirays Technology.