Research on thermal runaway of lithium-ion batteries for new energy vehicles
Lithium batteries,as an important power source for new energy vehicles,are widely used due to their high energy density and long cycle life.However,frequent battery fires and thermal runaway problems have hindered the development of electric vehicles.In order to solve the problem of thermal runaway of lithium battery,the mechanism of thermal runaway of lithium battery was studied,and the concept,mechanism and influencing factors of thermal runaway of lithium battery were analyzed.The chemical reactions and heat transfer mechanisms in the process of thermal runaway were elaborated,and through experiments and theoretical analysis,corresponding prevention and control strategies for thermal runaway in single cell and lithium battery internal short circuits and overcharging states were proposed.A mathematical model was established to calculate the battery temperature to prevent thermal runaway,providing theoretical support and practical guidance for improving the safety of lithium batteries.
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维普
