Automatic composition selection method for Ni-MH battery

Abstract

The invention relates to an automatic component sorting method for a nickel-hydrogen battery. The automatic component selection method of Ni-MH batteries includes: first, an adaptive charging process, during which the battery is charged; second, a constant current discharge process, during which the fully charged battery is discharged at a constant current, Enter the third step after discharge; third, the sorting process, the sorting process adopts two-step sorting, the first sorting is to sort according to the voltage change V of each battery in the first step above, and the voltage change V =Vt-V0; Vt is the voltage value after battery charging is completed, and V0 is the voltage value before battery charging; the second step of sorting is to further refine the sorting on the basis of the sorting results of the first step, and the second step Sorting is carried out according to the battery capacity value Q measured by each battery in the above step 1, Q=∑Δf(i)*Δt, f(i) represents the average current value within Δt time. Using the above method, the sorting is accurate.

Description

technical field [0001] The invention relates to the field of nickel-hydrogen battery production, in particular to an automatic component selection method for nickel-hydrogen batteries. Background technique [0002] Nickel-metal hydride batteries are generally called secondary batteries because they can be repeatedly charged and discharged, and they can be used as power batteries for cars. The power battery pack requires the consistency of each battery in the battery pack, which mainly refers to the charging and discharging speed and battery capacity of the battery. At this stage, battery manufacturers have been using the traditional manual operation method, using manual loading and unloading, and manual sorting of batteries, which is labor-intensive and has obvious human errors; in recent years, many manufacturers have improved the formation equipment and used the host computer to collect battery formation signals. And to display the battery information and then perform man...

AI Technical Summary

Problems solved by technology

At this stage, battery manufacturers have been using the traditional manual operation method, using manual loading and unloading, and manual sorting of batteries, which is labor-intensive and has obvious human errors; in recent years, many manufacturers have improved the formation equipment and used the host computer to collect battery formation signals. And to display the battery information and then perform manual sorting, but in this method, the upper computer algorithm is simple, only need to record the battery charging time and discharging time according to the initial input constant current value to indicate the battery capacity, which cannot truly and accurately reflect The chemical changes inside the battery, and the formation process of the secondary battery is controlled by time, resulting in the inconsistency of the battery formation; at the same time, manual sorting will also increase the human factor in the battery sorting