A method for testing the properties of lead-acid battery grid alloys

Abstract

The invention discloses a performance testing method for a grid alloy of a lead storage battery. The method comprises the following steps: firstly, preparing three standard sample blocks and two detection sample bars by the grid alloy, then successively performing polishing, grinding, chemical polishing treatment and interfacial corrosion on the detection surface of the first standard sample block, and detecting the metallographic phase structure of the first standard sample block at the moment; then testing hardness of the second standard sample block by using a sclerometer; then detecting the electrochemical corrosion performance of the third standard sample block by using a three-electrode system to obtain a cyclic voltammetry curve so as to judge whether the electrochemical corrosion performance of the standard sample block is qualified or not; and performing an extension test on the first detection sample bar, performing a creeping test on the second detection sample bar, and judging whether the grid alloy is qualified or not when all test programs are finished. The method disclosed by the invention can comprehensively detect the quality and performance of the grid alloy so as to accurately judge the property of the grid alloy, and the problem of batch quality caused by the grid in follow-up storage battery production is avoided.

Description

technical field [0001] The invention relates to a material performance detection technology, in particular to a method for testing the performance of a lead storage battery grid alloy. Background technique [0002] At present, lead-acid batteries are used in a wide range of fields, such as electric vehicles, electric road vehicles, telecommunications, electric power, portable equipment, energy storage, medical equipment and other fields. The grid is an important part of the lead-acid battery. It is the carrier and conductor of the active material of the lead-acid battery. The electrical energy released by the active material participating in the electrochemical reaction and the external electrical energy required for charging are all conducted through the grid. Therefore, the performance of the alloy material used to manufacture the grid will directly affect the service life of the battery. In the existing production process of lead-acid batteries, people usually make an ev...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that existing lead-acid battery grid alloy detection methods cannot accurately judge the comprehensive performance of the material, thereby easily causing batch quality defects in the battery, and to provide a lead-acid battery grid Alloy performance test method can conduct a comprehensive test on the quality and performance of the grid alloy, so as to accurately judge the performance of the grid alloy and avoid batch quality problems caused by the grid in the subsequent battery production