摘要
锂离子电池作为电动汽车的主流动力源,其组件导热系数是计算热传导过程中导热量最重要的参数。针对现有测量锂离子电池组件导热系数方法测量时间长、测量误差大,样品制备复杂等现状,提出了一种基于红外测温原理叠层稳态热测量方法,该方法采用激光加热叠层表面,通过红外热像仪测量表面温升,完成测量平台的搭建。测量聚丙烯材料的导热系数表明,该方法能够准确测量固体材料的导热系数,且测量模型简单,测量速度快。采用非接触式的测量方法,测量误差小,为测量锂离子电池组件的导热系数提供了新的方法,具有较好的工程应用前景。
As the main power source of electric vehicles,the component thermal conductivity of lithium-ion battery is the most important parameter to calculate the heat conduction in the process of heat conduction.In view of the existing methods for measuring thermal conductivity of lithium ion battery components,such as long measurement time,large measurement error,and complex sample preparation,a laminated steady-state thermal measurement method based on infrared temperature measurement principle is proposed.The method uses laser to heat the laminated surface,and measures the surface temperature rise by infrared thermal imager to build a measurement platform.The thermal conductivity of Polypropylene(PP)was measured.The experimental results show that this method can accurately measure the thermal conductivity of solid materials,and the measurement model is simple,the measurement speed is fast,the non-contact measurement method is adopted,and the measurement error is small.It provides a new method for measuring the thermal conductivity of lithium ion battery components,and has a good engineering application prospect.
作者
刘永健
LIU Yongjian(School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)
出处
《农业装备与车辆工程》
2023年第7期161-165,共5页
Agricultural Equipment & Vehicle Engineering
关键词
锂离子电池
导热系数
叠层结构
稳态热测量法
非接触式
lithium ion battery
thermal conductivity
laminated structure
steady-state thermal measurement
non-contact type
