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Various patterns - valve-controlled lead-acid batteries-Shenzhen Power Kingdom Co., Ltd.

by:Power Kingdom     2020-02-28
Failure modes of valve-controlled lead-acid batteries, for valve control type lead acid battery, usually performance deterioration mechanism has the following several ways. Open type lead-acid battery when charging, in addition to the active material regeneration, and the water in the sulfuric acid electrolyte gradually generated by electrolytic hydrogen and oxygen. When the gas from the battery cover air flow leads to the atmosphere, every 18 11 grams of water decomposition. 7 kcal heat, and for valve control type lead acid battery, charging internal oxygen flow to the cathode, oxygen in the negative plate making active substances spongiform lead oxide, and low effective supplement the losing of water electrolysis, valve-controlled lead-acid battery depends on the electric shell wall heat conduction to heat dissipation, battery when installation, good ventilation and lower the condition of room temperature is very important. In order to further reduce the risk of thermal runaway, float charging voltage is usually specific depending on different producers and different temperature. Manufacturers are generally given float charging pressure and temperature compensation of the battery. Valve control type lead acid batteries, this form of performance deterioration was more serious, due to oxygen cycle reaction, the cathode active material is continuous oxide generated lead sulfate, effectively maintain the discharge state, thus reducing the potential negative plate, and for a given float charging pressure positive plate group of potential is higher accordingly. Compounds and oxidizing atmosphere, caused more oxygen precipitation, valve-controlled lead-acid battery exacerbated corrosion and loss of active material.
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