What factors will affect the life of Lead Acid replacements?
Lead Acid replacements are now ubiquitous in our lives. We use mobile phones, tablet computers, etc., all have Lead Acid replacements. It can be said that Lead Acid replacements are small in watches, mobile phones, laptops, electric vehicles, etc. . However, everyone may have discovered that although the lithium battery has been carefully maintained, there will still be natural aging. So what causes the natural aging of the lithium battery?
1. Impact of planning and manufacturing processes
In the battery planning process, the selection of materials is an important factor. Different materials have different functions and characteristics, and the functions of the batteries developed are also different. The cycle performance of the positive and negative materials matching is good, and the cycle life of the battery will be long. In terms of ingredients, pay attention to the amount of positive and negative materials added.
2. Influence of charge cut-off voltage
The amount of delithiation of the NMC material is proportional to the charge cut-off voltage, that is to say, the higher the charge cut-off voltage, the greater the delithiation amount of the NMC material, and the more unstable the structure of the material is. Therefore, the charging cut-off voltage should be reasonably selected according to the planned life of the ternary lithium battery pack.
3. Positive and negative electrode compaction
If the positive and negative electrodes are compacted too high, although the energy density of the cell can be improved, it will also reduce the cycle 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 cycle of the life of the lithium battery.