Sen Zhan , Lingfeng Liang , Zonghua Li , Cheng Yu , Fuzhen Wang
{"title":"Topology optimization of liquid cooling plate for lithium battery heat dissipation based on a bionic leaf-vein structure","authors":"Sen Zhan , Lingfeng Liang , Zonghua Li , Cheng Yu , Fuzhen Wang","doi":"10.1016/j.ijheatmasstransfer.2024.125898","DOIUrl":null,"url":null,"abstract":"<div><p>Considering the safety and effectiveness of lithium-ion batteries for new-energy vehicles under extreme working conditions, a topology optimization design method based on a bionic leaf-vein structure is proposed in this paper. Taking the liquid cooling plate for a lithium-ion battery as the research object, heat dissipation channels with a bionic leaf-vein structure were designed. The number, angle, width, and height of initial cold plate (ICP) were analyzed through orthogonal experiments. The optimized cooling plate (OCP) with a bionic leaf-vein structure was obtained by solving with the non-dominated sorting genetic algorithm-II (NSGA-II). Then, the two-dimensional structure of the OCP was used as the initial solution, and topology optimization was performed with an initially uniformly distributed density field. Maximum heat transfer and minimum dissipative work were used as the multi-objective functions to obtain the bionic topological cooling plate (BTCP) and the topological cooling plate (TCP). Finally, the performance of the BTCP and TCP were compared with that of the OCP. The results showed that the OCP has better heat dissipation compared to the ICP, with the maximum temperature (<em>T<sub>max</sub></em>) reduced by 1.06 °C and maintained around 33 °C. Additionally, the pressure drop (<em>ΔP</em>) is reduced by 40.03%, and the standard temperature difference (<em>T<sub>σ</sub></em>) is reduced by 8.98%. The <em>T<sub>max</sub></em> of the BTCP was reduced by 0.71 °C compared to that of the OCP. Furthermore, the <em>ΔP</em> and <em>T<sub>σ</sub></em> are reduced by 71.25% and 40.79%, respectively. Compared with the TCP, the thermal homogeneity of the BTCP increases by 29% even though the <em>ΔP</em> increases by 2.87 Pa. Analysis of the comprehensive indexes shows that the performance of the TCP and BTCP improves by 80% and 96%, respectively, on the basis of that of the OCP. Moreover, the BTCP features a better channel structure, which ensures thermal homogeneity and saves computation time of the model.</p></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":null,"pages":null},"PeriodicalIF":5.0000,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Heat and Mass Transfer","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0017931024007294","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Considering the safety and effectiveness of lithium-ion batteries for new-energy vehicles under extreme working conditions, a topology optimization design method based on a bionic leaf-vein structure is proposed in this paper. Taking the liquid cooling plate for a lithium-ion battery as the research object, heat dissipation channels with a bionic leaf-vein structure were designed. The number, angle, width, and height of initial cold plate (ICP) were analyzed through orthogonal experiments. The optimized cooling plate (OCP) with a bionic leaf-vein structure was obtained by solving with the non-dominated sorting genetic algorithm-II (NSGA-II). Then, the two-dimensional structure of the OCP was used as the initial solution, and topology optimization was performed with an initially uniformly distributed density field. Maximum heat transfer and minimum dissipative work were used as the multi-objective functions to obtain the bionic topological cooling plate (BTCP) and the topological cooling plate (TCP). Finally, the performance of the BTCP and TCP were compared with that of the OCP. The results showed that the OCP has better heat dissipation compared to the ICP, with the maximum temperature (Tmax) reduced by 1.06 °C and maintained around 33 °C. Additionally, the pressure drop (ΔP) is reduced by 40.03%, and the standard temperature difference (Tσ) is reduced by 8.98%. The Tmax of the BTCP was reduced by 0.71 °C compared to that of the OCP. Furthermore, the ΔP and Tσ are reduced by 71.25% and 40.79%, respectively. Compared with the TCP, the thermal homogeneity of the BTCP increases by 29% even though the ΔP increases by 2.87 Pa. Analysis of the comprehensive indexes shows that the performance of the TCP and BTCP improves by 80% and 96%, respectively, on the basis of that of the OCP. Moreover, the BTCP features a better channel structure, which ensures thermal homogeneity and saves computation time of the model.
期刊介绍:
International Journal of Heat and Mass Transfer is the vehicle for the exchange of basic ideas in heat and mass transfer between research workers and engineers throughout the world. It focuses on both analytical and experimental research, with an emphasis on contributions which increase the basic understanding of transfer processes and their application to engineering problems.
Topics include:
-New methods of measuring and/or correlating transport-property data
-Energy engineering
-Environmental applications of heat and/or mass transfer