首页|Study on on-line failure detection method of lithium-ion battery based on Mie scattering theory
Study on on-line failure detection method of lithium-ion battery based on Mie scattering theory
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Lithium-ion battery has attracted more and more attention under the background of energy crisis and environmental pollution,and safety issues have become the focus of attention.A new detection method is proposed in this paper to overcome the problems of poor versatility,low accuracy and poor sensitivity in aerosol and smoke detection in the early warning of lithium-ion battery failure.It is a photodetector based on Mie scattering theory,which can assist tem-perature,voltage and current data to realize online detection.The experiments have shown that a lithium-ion battery with a battery capacity of only 300 mA was overcharged under low power conditions.The aerosol and smoke gener-ated by the battery failure and rupture were easily detected by the detector.A small amount of aerosol and smoke could be detected under overdischarge conditions,and the feasibility of the method was fully verified.The results show that on-line detection of lithium-ion battery failure can be achieved under extreme conditions with few nuisance alarms,and it is characterized by low cost,high speed,high efficiency and good universality.
LI Wen、Lü Binbin、XU Minggang、HAO Sijia
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Institute of Mechanical and Electrical Engineering,North China University of Technology,Beijing 100144,China
国家自然科学基金Beijing Science and Technology Innovation Service Ability Building
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