September 26, 2023

New Energy Vehicle Battery Rupture Discs-Different Explosion Values Analysis

The battery explosion-proof valve of new energy vehicle battery rupture discs is a safety device that controls the pressure inside the battery. When the battery’s internal pressure exceeds a certain value, the explosion-proof valve will explode and release the pressure to prevent the battery from exploding.

The burst value of the battery explosion-proof valve refers to the amount of pressure inside the battery that the explosion-proof valve will open. This value is generally determined by the designer based on the performance and usage scenarios of the battery and usually varies between battery models. Generally speaking, the explosion value of a battery rupture discs  explosion-proof valve is between 0.5-1.0MPa.


Why Do Car Companies Have Different Blasting Value Requirements?

There are mainly the following reasons:

  • Differences in Battery Types and Performance

Different battery types and performance parameters determine the amount of internal pressure. For example, the working principles and performance of lithium-ion and nickel-metal hydride batteries are quite different, and their internal pressures will also differ. Therefore, car companies need to develop corresponding explosion-proof valve explosion values based on the type of battery used and performance requirements.

  • Different Vehicle Usage Scenarios

Different types of vehicles will have different working conditions and environmental requirements during use. For example, when an electric vehicle is driving at high speed for a long time or accelerating rapidly, the temperature and pressure inside the battery are higher than that of an ordinary hybrid vehicle, so the burst value needs to be adjusted accordingly to ensure safety.

  • Safety Considerations and Standard Requirements

When car companies set the explosion value of explosion-proof valves and consider battery performance and usage scenarios, they must also comply with relevant safety standards and regulatory requirements. Different regions and countries may have different safety standards and regulations. These standards have clear requirements for battery safety performance, including the explosion value of explosion-proof valves.

  • Car Companies’ Requirements and Technical Capabilities

They will consider their own technical capabilities and product positioning when formulating the explosion value of explosion-proof valves. Some car companies may improve battery safety performance by optimizing battery design and control systems, thereby reducing the explosion value of explosion-proof valves. Some car companies may adopt conservative design requirements to ensure product reliability and safety.


In general, the different burst value requirements of the explosion-proof valves of car companies are determined by various factors such as battery performance differences, vehicle usage scenarios, safety standards, and regulatory requirements, as well as the car companies’ requirements and technical capabilities. For each situation, car companies need to comprehensively consider these factors and formulate reasonable explosion-proof valve burst values to ensure the safety performance of the battery and meet relevant standards and requirements.

The explosion value of new energy battery explosion-proof valves is usually determined through engineering design, and the specific value will vary according to different battery types and design requirements. Generally speaking, the burst value will be determined based on the maximum working pressure of the battery and the pressure resistance of the material to ensure that it can work safely within the normal working pressure range. When the pressure exceeds the safe range, it can be opened in time to release it to avoid excessive pressure. High will cause the battery to explode.

Heju Stamping-New Energy Vehicle Battery Rupture Discs Manufacturer


Dongguan Heju Precision Electronic Technology Co., Ltd. is a company specializing in the production of battery rupture discs for new energy vehicles. It is one of the earliest companies in China to develop and produce battery bursting discs. It has many models, comprehensive specifications, and a single unit pressure range of up to 0.03MPA. CPK>2.0. It can cooperate with customers in developing new products and has passed the three major certification systems: ISO9001, ISO14001, and IATF16949. We continue to provide high-quality services to well-known domestic battery companies such as Sunwoda, China New Aviation, Guoxuan Hi-Tech, Haichen Energy Storage, Tafel, Ruipu Lanjun, etc., with a daily production capacity of one million to meet your production capacity needs.