Method for detecting capacity of storage battery

Abstract

The invention relates to a method for detecting the capacity of a storage battery. The method includes the steps that when the storage battery is discharged, discharge currents and real-time discharge voltages of the storage battery are detected and acquired; the largest discharge duration of the storage battery is calculated according to the real-time discharge voltages and discharge moments; the actual battery capacity of the storage battery is calculated according to the largest discharge duration and the discharge currents; the performance of the storage battery is judged according to the actual battery capacity and the nominal capacity of the storage battery. According to the method for detecting the capacity of the storage battery, existing manual physical detection operation is replaced by informationization automatic analysis. The performance of the storage battery is accurately and efficiently detected in real time through analysis and automatic comparison of the real-time discharge situation of the storage battery. The service life of the storage battery can be effectively prolonged, the failure rate of the storage battery can be reduced, and then tedious procedures for detecting the performance of the storage battery (especially a large-scale storage battery pack) are technically shortened.

Description

technical field [0001] The invention relates to a method for detecting the capacity of a battery, in particular to a method for detecting the capacity of a battery with high precision and reliability. Background technique [0002] During the use of the battery, the performance of the battery will definitely attenuate. How to judge or know the current performance of the battery is a very important issue. [0003] The existing methods for judging battery performance are mostly physical or chemical methods, as follows: [0004] 1. Judging by the appearance of the battery, whether there is deformation, protrusion, leakage, scorching, rupture, explosion, oxide leakage, etc. [0005] 2. Use a potentiometer to measure the electromotive force of the battery to judge the battery performance. [0006] 3. Use measuring instruments to detect the internal resistance of the battery, and then judge the performance of the battery. [0007] These existing methods mentioned above have very...

AI Technical Summary

Problems solved by technology

[0008] 1. The existing battery performance testing methods must require maintenance personnel to carry out physical testing, which not only has high labor costs, but also has problems such as inaccurate testing results due to differences in manual operations;

[0009] 2. Unable to achieve real-time and normalization;

[0010] 3. For the use environment with a large number of batteries, the performance management of batteries needs to consume a lot of economic costs, high maintenance costs, and can not achieve refined performance testing and maintenance management

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