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release time:2024-10-16 Hits: Popular:AG11 battery
Difficulties and significance of LR1130 battery health status research
The health status and life research of lithium-ion batteries are increasingly valued, but the battery SOH research is still in its infancy. There are three important reasons.
1. Long research cycle and strict control of experimental conditions
The cycle life cycle of lithium-ion batteries is long, and the battery aging experiment cycle is very long. During the test, the temperature, charge and discharge current, and charge and discharge cut-off voltage must be strictly controlled, and the battery aging must be evaluated every time.
2. Difficulty in monitoring and analyzing the internal state of the battery
The SOH research of lithium-ion batteries involves the internal state variables of the battery, such as the internal temperature, electrolyte concentration, and internal resistance of the battery in the electrochemical model. It is very difficult to accurately monitor the internal state of the battery, and these state variables must be quantitatively analyzed, which makes the problems to be solved in the battery SOH research difficult.
3. Coupling of various influencing factors
The temperature, charge and discharge rate, and discharge depth of the battery are all factors that affect the aging and life of the battery, and these factors are common. The research on battery SOH requires the decoupling of various influencing factors. However, these factors are interrelated, and the decoupling conditions are difficult to control, so it is difficult to perform decoupling analysis at present.
The significance of lithium-ion battery health status research
Battery SOH research is difficult and progress is slow, but SOH research is of great value to the use, maintenance and evaluation of batteries, and can provide basis and reference for planning, policy and industrial development, which is of great significance
1. Significance for battery management
The battery management system estimates the battery state of charge and remaining power, which is related to the battery capacity. If the battery management system can grasp the aging law and health status of the battery, it will help it to manage the battery throughout the battery life cycle.
2. Significance for battery use and maintenance
SOH research is conducive to mastering the factors affecting battery aging and providing theoretical guidance for battery use and maintenance. For battery use and maintenance, understanding the factors affecting battery aging can reduce the high and low temperature and overcharge and overdischarge that are detrimental to battery use; knowing the current health status of the battery can help judge the inherent hidden dangers and life of the battery, and provide reference for battery maintenance and replacement.
3. Significance for battery economic evaluation
Accurate evaluation of SOH is of great significance to the economic evaluation of batteries. Different application scenarios, usage methods and maintenance methods of lithium-ion batteries cause differences in battery life, which leads to differences in economic evaluations such as battery use costs and economic benefits. By establishing a battery aging model through SOH research, data support can be provided for analyzing the economic performance of batteries, which will provide effective assistance for company investment decisions, government policy formulation and industrial development planning.
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