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Dongguan Puwei Waterproof and Breathable Membrane Material Co., Ltd. is a high-tech company integrating R&D, production, sales and service. The company introduces international advanced technology, focuses on the development and application of expanded polytetrafluoroethylene, and has been committed to EPTFE new materials……

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Battery PACK pressure explosion-proof pressure relief balance valve, 3Kpa to open the fast pressure relief channel

Battery PACK pressure explosion-proof pressure relief balance valve, 3Kpa to open the fast pressure relief channel

In order to better serve customers and meet market demand, PUW has developed a pressure explosion-proof pressure relief balance valve that can quickly relieve pressure at 3Kpa. It complies with the international standards for new energy vehicles and has obtained relevant patents. It has high safety performance, easy use, low cost, good air tightness, excellent protection performance, good waterproofness and convenient detection. Features: 1. Overpressure quickly ventilates and relieves pressure, and the protection level is above IPX7 2. Aluminum alloy material, stronger reliability and longer service life 3. The rapid pressure relief value can be customized, and the pressure relief value can be selected according to different battery PACK shell materials 4. Simple installation, thread type and flange type, more reliable performance! Application advantages: 1. Reduce maintenance costs and improve safety index 2. The structure is small and can be installed in a small space 3. Quickly inflate the air tightness of the battery PACK 4. Support customization and improve suitability After PUW entered the automotive field in 2013, it has been committed to the research and development, production and sales of protective products in the field of auto parts. PUW entered the field of automotive 3-electric protection (battery, electric drive, electronic control), and formally developed it in 2014 The battery explosion-proof valve has quickly become a leader in automobile battery protection, and has successively provided services for SAIC, Geely, BYD, Dongfeng Electric, Wanxiang, BAK, CATL, BAIC, etc.
Time of issue : 2021-03-09
811 power battery pack pressure balance regulating valve, waterproof and dustproof balance pressure

811 power battery pack pressure balance regulating valve, waterproof and dustproof balance pressure

Recently, the 811 power battery has caused experts in electric car companies to discuss its safety. Many car companies believe that the 811 battery is obviously a double-edged sword. Brings a lot of security risks. The 811 battery is actually the ratio of nickel, cobalt, and manganese in the ternary lithium battery. Because there was a ratio of "523" and "622" before, "811" has also become its name, also called 811 battery. No matter what battery is installed in an electric vehicle, it has high requirements for its stability and thermal failure. For the 811 battery used in electric vehicle battery packs, in addition to physical heat insulation and flame retardant, high-efficiency battery constant temperature system, higher than international design standards, etc., the pressure balance adjustment of the battery pack is also a very critical part. For this key part, the low-pressure battery pack pressure balance regulator developed by PUW can balance the internal and external pressures. Since the battery pack itself has IP67 waterproof and dustproof indicators, it is fully sealed to a certain extent, so under different temperature, environment and altitude pressure, there will be a pressure difference between the inside and outside of the battery pack, and this balance device is to adjust the pressure inside and outside. of. Simply put, it can only pass through the air, while blocking water and dust. Features of PUW pressure balance regulating valve: 1. Overpressure quickly ventilates and relieves pressure, and the protection level is above IPX7 2. Aluminum alloy material, stronger reliability and longer service life 3. The rapid pressure relief value can be customized, and the pressure relief value can be selected according to different battery PACK shell materials 4. Simple installation, thread type and flange type, more reliable performance! Application advantages: 1. Reduce maintenance costs and improve safety index 2. The structure is small and can be installed in a small space 3. Quickly inflate the air tightness of the battery PACK 4. Support customization and improve suitability After PUW entered the automotive field in 2010, it has successively provided services for automotive lights, automotive electronic controls, automotive motors, and automotive batteries. The automotive battery pressure balance regulator developed in 2014 has been recognized by major car companies and battery manufacturers after it went public. And quickly became the leader in car battery protection.
Time of issue : 2021-03-09
Constant pressure balanced explosion-proof valve, battery pack thermal runaway, rapid pressure relief and exhaust

Constant pressure balanced explosion-proof valve, battery pack thermal runaway, rapid pressure relief and exhaust

The reason for the thermal runaway of the battery pack is simple: the battery is overheated, causing thermal runaway. Of course, there are many reasons for overheating, such as uneven temperature of the battery pack, high local temperature; overcharge and overdischarge. External short circuit, internal short circuit, etc.; external force also has mechanical causes, such as collision, squeezing, puncture, and water ingress. In order to solve the impact of thermal runaway and the safety of thermal diffusion, the constant pressure balanced explosion-proof valve developed by PUW Puwei can quickly release pressure and exhaust when it reaches a certain pressure value. The product is mainly used in the field of battery PACK and other occasions that require waterproof, breathable, explosion-proof, and rapid pressure relief to balance internal and external air pressure. Air permeability: ≥600ml/min@1.5Kpa Explosion-proof pressure (customizable): 3±1Kpa Temperature resistance range: -40~150℃ Product specifications: PBA4K-50 Flame retardant rating: UL 94-V0 Protection level: IP68 (1 meter water depth for 48 hours), IP6K9K Basic functions: pressure balance, waterproof, breathable and explosion-proof, pressure relief and exhaust (air pressure balance inside and outside the battery pack) Pressure relief (when the battery cell is abnormal, the pressure can be quickly relieved and exhausted to prevent excessive pressure from damaging other structures of the battery PACK) Explosion-proof pressure can be customized according to customer requirements, and can be divided into low-pressure blasting (3~5Kpa), medium-pressure blasting (10-20Kpa), and high-pressure blasting (above 30Kpa). Meet ROHS environmental protection requirements.
Time of issue : 2021-03-09
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