锂离子电池热模型的研究动态

锂离子电池具有高能量密度、高功率密度、高循环次数及高电压等特点,在新能源产业占据越来越重要的地位。锂离子电池的循环效率、容量、功率、安全性、可靠性和寿命等诸多性能与温度密切相关。热模型可以模拟电池在应用条件下的热行为,研究电池产热、传热、散热的规律,实时计算电池内部和表面的温度变化以及温度场信息,为电池和电池组热管理系统设计与优化提供依据。首先介绍了锂离子电池热模型的类型及产热来源,然后阐述了锂离子电池电化学-热耦合模型、热滥用模型和电-热耦合模型的研究进展,最后根据当前锂离子电池热模型存在的问题对其今后的发展方向进行展望。

Progress of Research on Thermal Models of Lithium-ion Battery

Lithium-ion battery has the characteristics of high energy density, high power density, more recycle times, and high voltage, etc., thus it has become more increasingly important in the new energy industry. Its performances, such as cycle efficiency, capacity, power, safety, reliability, and life, are closely related to temperature. Thermal models can be used to simulate the thermal behavior of the battery under application conditions, study the laws of heat generation, heat transfer, and heat dissipation, and calculate its internal and surface temperature changes as well as its temperature field in real time, providing a basis for the design and optimization of the battery and its thermal management system. First, the classification of thermal models and the heat source of lithium-ion battery are introduced. Then, the progress of research on its electrochemistry-thermal coupled model, thermal abuse model, and electro-thermal coupled model is elaborated. Finally, in light of the problems in the thermal models of lithium-ion battery, the developing trend in the future is forecasted.