The rapid development of modern science and technology and the requirements for environmental protection have madeNew energy electric vehicles emerged and gradually occupied a larger market.As the main energy storage component of electric vehicles, the battery pack is loaded with battery packs. It is the core component of new energy electric vehicles and can directly have an important impact on the performance of new energy electric vehicles.For the safety of vehicles, when designing battery packs, battery manufacturers will take corresponding protective measures based on the vehicle's usage environment to eliminate safety hazards as much as possible. There are also certain requirements for the waterproof capabilities of battery packs.

Battery pack air tightness testing site

Generally speaking, power batteries have been tested for waterproofing before leaving the factory, so there is no problem driving the vehicle in rainy days.butIf we happen to encounter heavy rain or flooding, then water is likely to enter the battery pack, causing adverse reactions to the power battery pack.How to produce a qualified and stable battery has become the top priority for the development of the new energy vehicle industry. The sealing test and air tightness testing of new energy vehicle battery packs have also become a focus of attention.

New energy vehicle battery pack sealing test

The customer requirements for this test are:battery packDoIP67waterproof levelTightness test，Because the power lithium battery pack product has a large area, a small internal space, and a thin material, it can withstand less pressure.Therefore, Hiraysi Technology adopts the following equipment and methods:

On-site demonstration of battery pack waterproof testing

Equipment used: HiraysHC Positive and negative pressure air tightness detector

Detection method: Use the pressure drop method. Generally, the hole of the breathing valve is directly inflated through the breathing valve on the battery pack, without the need for tooling and fixtures.

The size of the battery pack is different, and the test time used is also different. Usually the battery pack is relatively large, and the test time ranges from a few minutes to more than ten minutes.Usually, the test pressure used for battery packs is relatively low, because too high a pressure will cause the battery pack to deform.

HCThe air tightness detector is testing the tightness of the battery pack

Air tightness testers for battery packs have slowly become popular in the market. Batteries are the core components of automobiles and directly affect the safety of the entire vehicle. Battery pack manufacturers have thought very carefully about the overall design of the battery pack and the testing requirements for the air tightness of the battery pack. With the increase in battery pack production output of manufacturers on the market and the control of production line costs.