As an industry that China has vigorously developed in recent years, new energy vehicles have received strong support from the state, and many complete vehicle and parts manufacturers have emerged.“Thirteenth Five-Year Plan”The draft planning outline proposes to implement a new energy vehicle promotion plan, vigorously develop pure electric vehicles and plug-in hybrid vehicles, and focus on breakthroughs in power battery energy density, high and low temperature adaptability, waterproofing,Air tightness testing equipmentand other key technologies, the country’s cumulative production and sales of new energy vehicles have reached 5 million units.

Different from previous fuel power, new energy vehicles are driven by hydrogen power and power batteries. The safety requirements of the parts involved are higher, and more parts are required.Air tightness testingPut forward higher requirements.Hirays Technology’s air tightness detection technology is used in variable speed motors and power battery packsAir tightness testing, automobile controller air tightness testing, charging gun waterproof testing, charging pile waterproof testing, DC converters and other new energy components are widely used. Mature air tightness testing technology and reliable product air tightness testing capabilities help find customers to improve product quality.

Hirays provides some testing methods for air tightness testing of some parts of new energy vehicles and provides reference for various manufacturers.

Air tightness testing of new energy vehicle motor water channels

New energy automobiles use variable speed motors to realize the transmission. The motor casing is equipped with a cooling water channel. In order to ensure the complete sealing of the water channel and prevent water from leaking and damaging the electrical components of the motor, many manufacturers have adopted the universal air tightness detector produced by Hirays Technology., the test pressure of the motor housing water channel is 250kPa (or 2.5bar), and the water leakage is no leakage for 5 minutes. The indicator tested by the air tightness detector is 250kPa, inflating for 20S, balancing for 40S, and the leakage value ≦3Pa/s is qualified.This is also the motor housing air tightness testing standard adopted by BYD and other automotive industries.