基于无机超导热管的车用锂离子电池组散热性能

鄂加强^{1, 2, 3}，胡小峰^{1, 2, 3}，胡辽平²，龙艳平^{1, 2, 3}，朱蓉甲^{1, 2, 3}

(1. 湖南大学 汽车车身先进设计制造国家重点实验室，湖南 长沙，410082；
2. 湖南大学 机械与运载工程学院，湖南 长沙，410082；
3. 湖南大学 先进动力总成技术研究中心，湖南 长沙，410082)

摘 要：针对目前车用锂离子电池散热困难等问题，以10 A·h车用动力锂离子电池组为研究对象，基于无机超导热管散热方法建立电池组三维热仿真模型，在不同工况下对用不同直径的无机超导热管进行模拟仿真。仿真结果表明：达到稳定状态后，无机超导热管散热方式能确保电池单体的温度控制在20~50 ℃；当放电电流为10 A且放电时间为10 min时，无机超导热管散热后的车用锂离子电池温度不超过48 ℃，散热效果较好，满足设计要求。

关键词：锂离子电池；散热；无机超导热管；仿真

Capacity of heat dissipation for automotive lithium ion battery based on inorganic superconductivity technology

E Jia-qiang^{1, 2, 3}, HU Xiao-feng^{1, 2, 3}, HU Liao-ping², LONG Yan-ping^{1, 2, 3}, ZHU Rong-jia^{1, 2, 3}

(1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,
Hunan University, Changsha 410082, China;
2. College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China;
3. Research Center of Advanced Power Assembly Technology, Hunan University, Changsha 410082, China)

Abstract:Due to heat dissipation problem of lithium ion battery in the automobile, taking 10 A·h automotive lithium ion battery as the object of the research, a three-dimensional thermal simulation model for lithium ion battery in the automotive was established based on inorganic superconductive heat pipe dissipation methods. Simulation was performed under different conditions by using different diameters of inorganic superconductive heat pipe. The results show that the temperature of battery surface can be controlled in 20-50 ℃ after reaching stable condition using the superconductive heat pipe. The inorganic superconductive heat pipe has the best cooling effect when the temperature of automotive lithium-ion battery is lower than 48 ℃ when the discharge current is 10 A and the discharge time is 10 min and can meet the design requirements.

Key words:lithium ion battery; heat dissipation; inorganic superconducting heat pipe; simulation