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Maintenance-free lead-acid storage battery nondestructive testing method and nondestructive testing instrument

A lead-acid battery, non-destructive testing technology, applied in the direction of instruments, measuring electricity, measuring devices, etc., can solve the problems of waste of resources and pollute the environment in the detection method, achieve significant economic and social benefits, improve accuracy, and avoid false scrapping Effect

Inactive Publication Date: 2014-11-19
双新电器(郑州)制造有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a maintenance-free lead-acid battery non-destructive testing method to solve the problems of resource waste and environmental pollution in existing testing methods, and to provide a non-destructive testing instrument using the method

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Embodiment Construction

[0039] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0040] The maintenance-free lead-acid battery non-destructive testing method of the present invention comprises the following steps:

[0041] (1) Firstly, the battery to be tested is discharged at a constant current with a set time and a set current, and the internal resistance r of the battery to be tested is calculated: r=(Vo-V1) / I, where Vo is the voltage before discharge; V1 is The voltage after discharge, I is the discharge current;

[0042] (2) Determine the battery according to the calculated internal resistance of the battery and the charging status of the battery to be tested: when rr0, it is judged that the battery is a bad battery; if the battery to be tested is an uncharged battery, when r>r0, it needs to be charged before judging;

[0043] The calculation process of the internal resistance of a standard battery is as follows: Cal...

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Abstract

The invention discloses a maintenance-free lead-acid storage battery nondestructive testing method and nondestructive testing instrument. Internal resistance of a battery under test is first calculated through constant current discharge, and is compared with standard internal resistance; determination is made based on a comparison result and a charging status of the battery; and if the battery is uncharged and the internal resistance thereof is greater than the standard internal resistance, then the battery should be tested and determined after being charged. By this testing method, the quality of a storage battery can be determined based on voltage and current variations in the period without dissection of the battery, the quality of a maintenance-free lead-acid storage battery can be determined accurately, the testing accuracy is improved, the scrapping of a large number of storage batteries due to incorrect determination is avoided, and economic and social benefits are significant. The testing instrument is provided with a charging circuit and a discharging circuit which are controlled by a controller, can be used for adjusting the current and voltage during charge and discharge through a controllable rectifier circuit, and meets testing needs.

Description

technical field [0001] The invention relates to a maintenance-free lead-acid battery non-destructive testing method and a non-destructive testing instrument. Background technique [0002] At present, the number of various vehicles is increasing, and in recent years, the number of new motor vehicles in my country has exceeded 10 million each year, and each vehicle is equipped with 1 or 2 12V lead-acid batteries, accounting for 90% of them. More than % are maintenance-free lead-acid batteries. If you add the maintenance-free lead-acid batteries that electric vehicles are equipped with, the number is quite large. [0003] In the early detection of open-type ordinary lead-acid batteries, the quality of the batteries can be checked by three methods: observation method, discharge method, and specific gravity measurement, and the accuracy rate is quite high. Because in many cases, the status of the battery can be judged by observing the changes of the polar plate and electrolyte i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 宋万生
Owner 双新电器(郑州)制造有限公司
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