Battery Pack Vent with Valve

Featured Product from Shenzhen Milvent Technology Co., Limited

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With the development of electronic products and new energy vehicles, consumers  have an increasing demand for power supply and energy storage, and have a higher and  higher demand for environmental protection new energy products. Batteries gradually  replace lead-acid batteries and are widely used in the fields of electronics, new energy  vehicles and energy storage.

With the development of electronic products and new energy vehicles, consumers  have an increasing demand for power supply and energy storage, and have a higher and  higher demand for environmental protection new energy products. Batteries gradually  replace lead-acid batteries and are widely used in the fields of electronics, new energy  vehicles and energy storage.

Milvent's new energy battery explosion-proof valve has three levels of protection for the battery:

Stage 1: The passive venting function can balance the pressure inside and outside the battery pack product, while preventing the dust and water.

This curve simulates an environment with a rise of 50°C within 50 minutes. It simulates the situation of starting a car on high speed in cold weather. Under the condition of airtight, the internal pressure will reach about 18KPA.

With Milvent's battery pack vents with explosion-proof valve, the differential pressure can  be quickly reduced to less than 1kPa

Stage 2: when the temperature in the battery pack rises rapidly and the pressure and heat accumulate rapidly, the explosion-proof valve is actively started and the valve is opened To discharge excessive pressure and protect the battery.

PIC 2. The internal curve changes when the battery heats up rapidly for a long time

This curve simulates rapid temperature rise for a long time in the case of out-of-control  battery heat, and the pressure exceeds the pressure tolerated by the battery pack shell by  150kpa. The battery pack will burst if the battery pack is not vented quickly.

Milvent battery pack explosion-proof valve is fit for above application, and the internal  design has the function of active ventilation + passive ventilation valve. In the case that  the passive ventilation cannot meet the requirements of ventilation, the active ventilation  valve can be opened to provide additional pressure for exhaust.It can be seen from the  simulation curve that the pressure is about 70KPA, far less than the pressure value of  150kpa.Can effectively protect the battery pack.

Stage 3: When the pressure returns to normal, the valve of stage 2 will resume and close and be ready at any time.Active ventilation continues.

PIC 3. Rapid temperature rise of short time battery and normal internal curve changes.

This curve simulates the situation of rapid temperature rise in a short time under  the condition of out-of-control battery heat, pressure exceeding 150kPa tolerated by  battery pack housing, and then resuming normal operation.

Milvent battery pack explosion-proof valve is fit for above application, and the  internal design has the function of active air vent valve, which can be reused: it can be  opened and then closed as the battery pack pressure returns to normal, to continue the  next repetition work.

Milvent's explosion-proof valve breaks through the design and improves the  destruction-type design on the market. When the battery pack gets out of control and  returns to normal in a short time, Mill's battery pack explosion-proof valve can be reused.  From the practical application of the battery case is more complex, also may occasionally  heats up quickly and then return to normal, not a momentary short more than normal  pressure, the battery is not continue to use, as our mobile phone batteries, sometimes  running program is overmuch, cause overload battery heating up too fast, but excess load  program operation, mobile phone batteries will be back to normal, the temperature of the  battery also can continue to use.

Milvent's battery explosion-proof valve is designed to be reusable to protect the  battery against complex and changing conditions.

From the perspective of technology development, automotive power battery technology is the bottleneck technology that restricts the industrialization process of electric vehicles. With the industrialization of electric vehicles gradually thorough, and key enterprises are intensify efforts to the development of power battery industry, based on new materials and structure of the ratio can power battery technology has become a global focus and enhance the vehicle power battery safety, life, low temperature characteristics of lower cost is the direction of the industrial technology development.So it is very important to use the explosion-proof valve with high reliability.

Currently Milvent battery pack venting with explosion-proof valves are available in  both plastic and metal materials.Please feel free to consult us, we will provide professional  services.

Our email is milvent@milvent.com www.milvent.com