What are the reasons that affect the customized natural aging of lithium batteries?portable power station solar

　　Lithium battery customization is now ubiquitous in our daily lives, with the existence of lithium battery customization in phones, tablets, and other devices we use in our daily lives. It can be said that lithium battery customization can be found in everything from watches and mobile phones to laptops and electric vehicles. But everyone may have noticed that even though lithium batteries are being carefully maintained, there may still be natural aging. So what is the reason for the natural aging of lithium batteries?

　　1. The impact of design and manufacturing processes

　　The selection of materials is an important factor in the battery design process. The performance characteristics of different materials vary, and there are also differences in the performance of batteries developed. The cycling performance of the battery is only prolonged when the positive and negative electrode materials match well. In terms of ingredients, attention should be paid to the amount of positive and negative materials added.

　　2. The influence of charging cutoff voltage

　　The amount of lithium removed from NMC materials is directly proportional to the charging cutoff voltage, which means that the higher the charging cutoff voltage, the greater the amount of lithium removed from NMC materials, and correspondingly, the more unstable the material structure. Therefore, the charging cutoff voltage should be reasonably selected based on the design life of the ternary lithium battery pack.

　　3. Positive and negative pole compaction

　　Excessive compaction of the positive and negative electrodes can increase the energy density of the battery cell, but it can also reduce the cycling performance of the material to a certain extent. From a theoretical analysis, the greater the compaction, the greater the structural damage to the material. The structure of the material is the basis for ensuring that the lithium battery can be recycled, that is, the lifespan of the lithium battery.

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