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Why is there inconsistency in 200ah lifepo4 battery balance maintenance

(Summary description)The inconsistency of the 200ah lifepo4 battery balance first comes from the manufacture of single cells. There are many processes in the production process of lithium-ion batteries, and the manufacturing process is relatively difficult.

Why is there inconsistency in 200ah lifepo4 battery balance maintenance

(Summary description)The inconsistency of the 200ah lifepo4 battery balance first comes from the manufacture of single cells. There are many processes in the production process of lithium-ion batteries, and the manufacturing process is relatively difficult.

Information

In practical applications, in order to achieve a certain level of voltage, power and energy, a large number of lithium-ion batteries are usually required in series and parallel to provide power for the vehicle. It can be clearly found from practice that each single battery has great differences in each physical element, especially the capacity and internal resistance are quite different. The problem of inconsistency is an important problem that needs to be solved. Why do inconsistencies arise?

200ah lifepo4 battery balance

1. Inconsistencies in the production process

The inconsistency of the 200ah lifepo4 battery balance first comes from the manufacture of single cells. There are many processes in the production process of lithium-ion batteries, and the manufacturing process is relatively difficult. A slight deviation in the parameters or responses of any procedure will affect the consistency of the finished battery.

2. Inconsistencies in the use process

Even though lithium-ion batteries have been strictly screened before grouping, after a period of use, the inconsistency of battery packs will still gradually manifest and become more and more serious. The reasons are as follows: Inconsistency of initial battery performance parameters It gradually accumulates and grows larger during use. The battery pack of electric vehicles and rail transit vehicles is composed of many single cells, which will show a strong "barrel effect" during use. Problems such as overcharge, overdischarge and overheating are prone to occur. These problems will accelerate the degradation rate of battery pack performance, resulting in the gradual accumulation and amplification of battery pack inconsistencies. The difference in the use environment has a greater impact on the inconsistency of the battery pack. The spatial position of the battery pack on the vehicle is fixed, and the thermal field of the battery is easily distributed unevenly, which leads to different temperatures of the single cells in different positions. The temperature of each single cell will lead to different ambient temperature, and the ambient temperature will affect the temperature of the battery, which will cause the performance parameters of each single cell to decay at different rates and increase the inconsistency of the battery pack.

With the increasingly serious problems of global energy crisis and environmental pollution, all countries in the world are committed to promoting the development of new energy fields. 200ah lifepo4 battery balance as a new energy energy storage element, its airtightness is relatively good, more importantly, its charging characteristics are relatively prominent, the overall service life is long, and its advantages such as safety and environmental protection stand out from many power batteries, and are widely used in In the field of electric vehicles and rail transit, balanced maintenance is necessary.
 

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