Energy Storage Science and Technology ›› 2023, Vol. 12 ›› Issue (10): 3108-3119.doi: 10.19799/j.cnki.2095-4239.2023.0364

• Energy Storage System and Engineering • Previous Articles     Next Articles

Strengthening the heat dissipation performance of liquid cooling plate by adding a diversion hole and a finned channel wall

Haodong ZHAO(), Furen ZHANG(), Bolin DU, Xue LI, Zhikai HUANG, Shizheng SUN   

  1. College of Electromechanical and Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China
  • Received:2023-05-29 Revised:2023-07-11 Online:2023-10-05 Published:2023-10-09
  • Contact: Furen ZHANG E-mail:z15730267714@163.com;zfr@cqjtu.edu.cn

Abstract:

Forming a local turbulence by adding fins in the liquid cooling channel is mainly performed to enhance the heat dissipation performance of a liquid cooling plate; however, this method leads to an increased pressure drop. To address this issue, a new cold plate structure with a baffle, a diversion hole in the channel, and a finned channel wall is designed herein. With regard to reducing the pressure drop and the average temperature, the influence of the number of diversion holes and fins is analyzed and discussed using a single factor method. The results show that the liquid cooling plate exhibits the best comprehensive heat dissipation performance when the numbers of the diversion holes and fins are 4 and 11, respectively. Using the multi-objective optimization method, the distances between different flow holes (X3) and between the flow holes and the starting point of the baffle (i.e., X1,X2,X4) are optimized to further optimize the heat dissipation performance of the liquid cooling plate. The results illustrate a further improved comprehensive performance of the model after the multi-objective optimization. The effects of the tilt angle and the opening width of the fin on the average temperature and pressure drop are discussed through orthogonal experiments. The optimization results show the opening width between the fins to have the greatest influence. The average temperature is reduced to 0.869 ℃, denoting a 2.4% reduction. The pressure drop is 18.257 Pa, yielding a 71.6% decrease. The changes in the Nusselt number, pressure drop, and comprehensive evaluation index of different cold plate structures at the Reynolds number changes ranging from 100 to 400 are discussed. This study promotes the application of battery thermal management heat dissipation by providing experimental basis for the research and development of the liquid cooling plate heat dissipation.

Key words: fin, diversion hole, multi-objective optimization, orthogonal experiment

CLC Number: