What are the main problems in the development of power supply system of lithium battery?

The main problems in the development of the current power supply system of the power lithium battery are: The safety and service life of the power battery are significantly reduced after the group is formed, and even serious accidents such as battery combustion and explosion occur frequently. The main reasons for the above problems are the lag in the research of power lithium battery group technology, group application technology and equipment. To realize the integration of power lithium battery system and provide users with power lithium battery system integration technology and products is an important task to solve the current problems and promote the development of power lithium battery.

At present, the single power lithium battery has basically the conditions for promotion, but the existing group technology, group application technology and equipment level are not yet mature. In other words, single-powered lithium batteries basically solve the safety and life problems. The key to promoting the development of powered lithium batteries is battery grouping technology and BMS technology.

The quality of the single cell determines the quality of the power pack after the group. In the application of power battery, the performance consistency of the single cell is particularly important. For the current level of control of the single cell production process, it is a realistic method to select, group, and assemble the cells produced according to their actual performance. At present, the screening and grouping method used in industrial production is based on a few static parameters of the cells after conversion. The group parameter control standard determines the consistency of the individual cell status of the batteries at the completion of the distribution group. In the use of batteries, the difference in the status of individual cells in the battery will gradually become apparent. The cell management system(BMS) manages the use of batteries and adjusts the status of individual cells in batteries to maintain the state consistency of individual cells in batteries to a certain extent, so as to avoid the acceleration of battery performance due to differences in cell status. Decline. The development of power lithium battery needs the improvement of the control level of the battery production process, the scientific method of battery selection and configuration and the effective battery management system.

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