Testing method for determining quality of lead-acid battery cell

Abstract

The invention discloses a testing method for determining the quality of a lead-acid battery cell, and the method comprises the steps: carrying out the AC impedance testing and short-time high-power large current discharge testing of a selected lead-acid battery cell, calculating the range of the deviation between the test result data with the AC impedance standard value and minimum voltage reference threshold value of a lead-acid battery of the same type, and determining the quality of the lead-acid battery cell. The method can determine the quality of the lead-acid battery cell efficiently, quickly and accurately. Compared with a battery voltage measurement and discharge process detection method, the method is solid in theoretical basis, and is shorter in testing time. The method can sort out the batteries in poor quality, guarantees the excellent performance of the lead-acid battery, and prevents a single lead-acid battery in poor quality from causing the discarding of the whole battery pack.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a test method for judging the quality of a single lead-acid battery. Background technique [0002] Lead-acid batteries have the advantages of mature technology, low cost, high safety and stable performance, and play a pivotal role in the battery market. And because the battery pack is lagging behind, the cycle life of the whole battery pack accounts for a large part of the returned batteries, and at the same time, the capacity of the battery with false high voltage will decline in a short period of time. To judge whether the battery performance is good or bad in daily life, you must use a multimeter Measure the floating charge voltage of each single battery to judge the performance of the battery, but measuring the voltage of each single battery has been proved to be difficult to judge whether the quality of each single battery is normal. The actual situation may be that when ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the invention of the present invention is to overcome the disadvantages of the prior art lead-acid storage battery pros and cons testing, its workload is large, time-consuming and labor-intensive; it cannot ensure the good performance of the process behind the storage battery, and cannot ensure the smooth operation of the battery pack, and provides It has a stronger theoretical basis and a shorter test time. At the same time, it can select outdated batteries in advance, ensuring the excellent performance of the lead-acid batteries used, and avoiding the scrapping of the entire battery pack caused by a single lagging battery. Test method for judging the pros and cons of single lead-acid batteries