Energy Storage Science and Technology ›› 2020, Vol. 9 ›› Issue (6): 1790-1797.doi: 10.19799/j.cnki.2095-4239.2020.0142

• Energy Storage Materials and Devices • Previous Articles     Next Articles

Heat dissipation performance of a power battery module based on thermoelectric cooling

Junwei LI(), Hengyun ZHANG(), Xiaoyu WU, Ying WANG   

  1. School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
  • Received:2020-04-13 Revised:2020-04-20 Online:2020-11-05 Published:2020-10-28
  • Contact: Hengyun ZHANG E-mail:a341203@hotmail.com;zhanghengyun@sues.edu.cn

Abstract:

This study investigates the thermoelectric cooling performance for a battery module. Cylindrical battery modules are arranged in a 3×5 array, and thermoelectric cooling systems are symmetrically arranged on both sides. A one-dimensional thermal resistance network of battery modules is established using a theoretical analysis to evaluate the thermal performance. The thermal resistance of the thermoelectric cooler (TEC) double-sided symmetric layout is obtained through an experimental measurement. The theoretical analysis method is used to study the maximum cooling power, COP, and optimal working current of the TEC by changing the TEC current, battery temperature, cold and hot-side thermal resistances, and TEC arrangement. The results show that the cold-side temperature of the TEC first decreases then increases with the TEC current increase, whereas the hot-side temperature gradually increases with the TEC input current increase. The cooling power first increases then decreases as the TEC current increases. The COP value of the TEC gradually decreases as the current increases. The cooling efficiency when the battery temperature is 30—50 ℃ is between 0.45 and 0.60. The optimal operating current corresponding to the maximum cooling power is between 5.50 A and 6.25 A. The cold- and hot-side thermal resistances affect the cooling power and the optimal cooling current of the TEC. The optimal TEC current corresponding to the maximum cooling power is greatly affected by the hot-side thermal resistance, but barely affected by the cold-side thermal resistance.

Key words: thermoelectric cooling (TEC), thermal management, thermal resistance network, thermoelectric cooling performance, steady state analysis

CLC Number: