Consistency screening method for power lithium battery cells

Under the current production capacity and technological level, reasonable screening is an important means to solve the consistency problem of power lithium batteries. The purpose of screening is to select power lithium battery cells with similar parameters, and to use scientific consistency screening methods to identify the quality differences between different power lithium battery cells, which is to improve the performance, utilization efficiency and safety of power lithium battery packs. Basic security of sex.

By measuring various parameters of the power lithium battery monomer, and applying a high-throughput, fast, efficient, and accurate consistency screening method, the power lithium battery monomer with close consistency is screened out to form a power lithium battery pack, so as to improve consistency the goal of. This method of improving consistency is to combine power lithium battery cells with relatively similar performance parameters to form a power lithium battery pack, rather than pursuing the ultimate identical properties of each power lithium battery cell. Therefore, this method can maximize Making full use of all the produced power lithium battery cells, taking into account both cost and efficiency, is a more suitable method for large-scale promotion in practical applications.

The existing screening methods for the consistency of power lithium battery cells are basically based on the idea of consistent product intrinsic characteristics. However, the inherent characteristics of power lithium battery cells are complex, and it is difficult to have a method that can effectively solve all the problems currently faced. According to the structure of the power lithium battery pack and the actual situation of the power lithium battery cells, determine the consistency requirements of the power lithium battery pack for the power lithium battery cells, and then select the most suitable screening method, that is, the consistency screening method should be targeted Universality, rather than universality, is an important feature that should be paid attention to and objectively recognized in consistency research.Also read:24v 400ah lithium battery

If the consistency screening method for the power lithium battery cells is to divide the intervals directly according to the value of the parameters, the power lithium battery cells falling in the same interval are a group. Parameters are the object of investigation, and the power lithium battery cells will continue to be grouped in more detail. That is, based on various parameters of power lithium battery cells, multi-level classification and screening are carried out. For example, the self-discharge rate is used as the first-level screening parameter, and the power lithium battery cells with a large self-discharge rate are eliminated, and then the power lithium battery cells are screened by the capacity and internal resistance parameters.

An effective screening method for the consistency of power lithium battery cells should be simple, fast, and high-throughput, based on the accuracy of testing equipment, and aim at the operating performance of power lithium battery packs. There are various methods for the consistency screening of power lithium battery cells, and there are different classifications according to different conditions. If classified according to the category of screening parameters, it can be divided into static screening and dynamic screening.

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