A method for preventing maintenance-free lead-acid battery from bursting
A lead-acid battery, maintenance-free technology, applied to battery pack components, circuits, electrical components, etc., can solve problems such as battery explosion, and achieve the effect of improving safety
Active Publication Date: 2019-08-23
FENGFAN
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Problems solved by technology
Although maintenance-free lead-acid batteries are designed with fire-resistant air filters and vent holes, during the use of the battery, due to improper operation, static electricity or internal defects of the battery, open flames may be generated, and open flames may also be introduced from the outside to ignite hydrogen and oxygen. The mixed gas causes the battery to burst
Method used
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[0014] The innovation of the invention lies in: before and during the use of the lead-acid battery, the interior of the lead-acid battery is filled with high-density flame-retardant gas. The test verifies that by adopting the method of the present invention, most of the hydrogen and oxygen generated in the storage battery are forcibly discharged. Because the internal hydrogen concentration is very low, there will be no explosion of the battery, thus effectively improving the safety of the battery.
[0015] The method of the invention comprises filling the inside of the maintenance-free lead-acid battery with flame-retardant gas before use, and maintaining the inside of the maintenance-free lead-acid battery with the flame-retardant gas, the density of which is greater than that of oxygen. Common industrial flame retardant gases mainly include nitrogen (N 2 ), argon (Ar) and carbon dioxide (CO 2 ), the comparison of various gas parameters is shown in the table below:
[0016...
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The invention provides a method for preventing a maintenance-free lead acid storage battery from cracking. The method comprises the steps as follows: the maintenance-free lead acid storage battery is fully filled with a flame-retardant gas before being used, and the flame-retardant gas is kept in the maintenance-free lead acid storage battery in the use procedure; and the density of the flame-retardant gas is greater than that of oxygen. By the method provided by the invention, hydrogen and oxygen generated before use of the storage battery and in the use procedure can be forcibly discharged by the flame-retardant gas; and once the storage battery generates an open fire due to a misoperation, static electricity or an internal defect of the battery or the open fire is introduced from the outside, the storage battery does not crack due to very low concentration of the internal hydrogen, so that the use security of the maintenance-free lead acid storage battery is effectively improved.
Description
technical field [0001] The invention relates to a storage battery production method, in particular to a method for preventing maintenance-free lead-acid storage batteries from bursting, and belongs to the technical field of storage batteries. Background technique [0002] With the rapid development of the automobile industry, automobiles have gradually become popular in families. The sales of lead-acid batteries are increasing year by year, and more and more users are exposed to lead-acid battery products. Lead-acid batteries are also used more and more in non-vehicle fields such as lighting and power supply. Maintenance-free lead-acid batteries, as the name suggests, the biggest feature is "maintenance-free". Compared with ordinary lead-acid batteries, its electrolyte consumption is very small, and there is basically no need to replenish distilled water within the service life. The shell of maintenance-free lead-acid batteries They are generally closed. In recent years, ...
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IPC IPC(8): H01M2/12
CPCH01M50/30Y02E60/10
Inventor 王廷华宋艳龙王再红王怀宇魏立平曲宝光李刚赵海涛
Owner FENGFAN