Valve control battery safety valve has/z, FLZ to use? It's the pressure of opening valve and closing valve size have any influence on valve control battery?

( 1) Throttle valve ( Also called safety valve) The role of is as follows: 1) In normal floating condition, throttle valve exhaust away L can trace gases emissions, prevent gas accumulation of the battery. 2) Such as battery produces gas due to reasons such as overcharge, the valve to open, can timely discharge surplus gas, reduce the battery internal pressure. 3) Pressure exceeds constant value gas, shut down automatically after decompression, the gas in the air are not permitted to enter inside the battery, so as not to accelerate the self-discharge of the battery. 4) Throttle valve between the cover and furnish explosion-proof filter device. Filter adopts ceramic or other special materials, to filter acid and flame-proof. Filter has a certain thickness and granularity, such as the fire approached, can partition exploded inside the battery gases. ( 2) Pressure throttle opening valve and closing valve pressure have strict requirements, shall be determined according to gas composite pressure condition. Open valve pressure is too high, easy to make the gas inside the battery out of limit value, cause the battery shell expansion or crack, and the safety of the battery. Such as open valve pressure is too low, gas and water vapor serious losses, the battery may fail due to excessive water loss. In order to prevent external gas enter inside the battery, battery performance, to timely close throttle valve. Closing valve pressure is too low will cause the external gas into the internal battery, the battery is in open state, is not conducive to the gas composite battery. Closing valve pressure is too low for a long time can cause dry battery, thus greatly shorten the service life of battery. Generally, open the valve pressure slightly lower as well, and closing valve pressure close to the open valve as well.