微热管阵列应用于锂电池模块的散热实验

锂离子电池在大功率应用下的热控制和热管理已成为制约电动汽车商业化的瓶颈，为解决此问题，运用微热管阵列设计锂电池模块散热系统，在开放条件下对电池模块进行恒流18 A（1 C）和36 A（2 C）充放电测试，通过测量布置微热管阵列前后电池表面温度可知:在1 C和2 C充放电倍率下，散热系统能够有效的降低电池模块的温度及电池间温度差异，将温度和温度差值分别控制在40℃与5℃之内，可以解决温度对电池寿命和容量的影响问题.基于实验数据，对其中一2 C工况热量进行了计算，得到通过微热管阵列的对流散热量达到模块生热量的40%. 

Experiment on heat dispersion of lithium-ion battery based on micro heat pipe array

The thermal control and heat management of lithium-ion (Li-ion) batteries in high-power applications remains a challenge to be addressed before widespread commercialization. To solve the problem, micro heat pipe array (MHPA) is used to design Liion battery packs cooling system. Experiments were conducted utilizing Li-ion battery packs under open conditions with constant current of 18 A(1 C) and 36 A(2 C). The temperatures were measured with and without micro heat pipe arrays during the charge-discharge cycle. At the rates of 1 C and 2 C, the temperature results of the Li-ion battery packs validate the effectiveness of the functional heat conducting material-MHPA in lowering the temperature of the battery packs, as well as the temperature difference inside the packs, the temperature and temperature difference could be controlled within 40℃ and 5℃ respectively. Thus, they preliminarily solve the influence of temperature on battery life and capacity. Based on the experimental data, the heat in one of the 2 C working conditions was calculated, and the convection heat dissipation by MHPA reached 40% of the heat generation in the pack.