(Summary description)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.