The battery management system is not as dispensable as some battery manufacturers say, but must have, and it must be used throughout the battery pack application. The application of lithium power battery puts forward higher requirements for the battery management system, and ensuring the safety of the power battery pack is the primary task of the lithium power battery management system.

　　The ideal lithium power battery has a high degree of performance consistency. As long as the battery is overcharged during use, there is no safety problem. The actual situation is that the quality of the mobile phone battery fully meets the standard when it leaves the factory, but there are explosions during use. There are also reports of fires, explosions and product recalls in battery packs for notebook computers.

　　Batteries have safety issues from production to end-of-life recycling. Even if they are in full compliance with international safety standards when they leave the factory, they will evolve from a safe state to an unsafe state during use, and the performance of good quality single-cell batteries will gradually decline and reach the end of life. , A single battery of poor quality will gradually experience various abnormal deterioration and decline in its performance during use, and enter the unsafe state of concern. This is a cumulative process of change.

　　The battery management system is not as dispensable as some battery manufacturers say, but must have it, and it also runs through the battery pack application. There have been many researches on battery management systems at home and abroad, and they have begun to be applied in many fields, and have been able to meet the needs of some markets. The application of lithium power batteries puts forward higher requirements on battery management systems to ensure the safety of power battery packs. It is the primary task of the lithium power battery management system.