Research on Heat Dissipation Performance of Battery Pack Based on Vertical Arrangement of Flat Plate Heat Pipes Wuhan Univ. of Technology

Format:

Book

Conference/Event

Author/Creator:

Zheng, Xingmang, author.

Conference Name:

WCX SAE World Congress Experience (2020-04-21 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2020

Summary:

Temperature is a direct factor affecting battery performance. If the temperature of the battery is too high or the temperature difference between cells is too large, it will accelerate the degradation of battery performance, reduce the battery life, and may cause safety problems such as thermal runaway in severe cases. Efficient thermal management of batteries is important to improve battery performance and safety. The flat plate heat pipe(FPHP) has high thermal conductivity, strong isothermal performance and light weight, it's an ideal heat dissipating component for battery thermal management.In this study, the FPHP is used as the heat conduction component of the battery pack. Firstly, the position of the FPHP with minimum thermal resistance is obtained through experiments. Based on this, the heat dissipation effect of the FPHP on the battery pack is studied, and the purpose of reducing the maximum temperature of the pack and balancing the temperature difference between cells is achieved.In this study, a square LiFePO4 battery pack is taken as the research object. The one-dimensional heat model of the battery is established according to the thermal characteristics of the battery, and the heat source characteristics of the battery are analyzed by simulation. Then, establish the battery pack-FPHPs-fin thermal management system. And the thermal management performance of the battery pack under the conditions with and without FPHP was studied by different discharge magnifications experiments. Comparing the simulation results with the experimental results, the superiority of the FPHP at different discharge rates was obtained.Studies have shown that this thermal management system keeps the cell temperature difference within 3 . Used in electric vehicles, it provides a new method for high-power batteries thermal management in the future

Notes:

Vendor supplied data

Publisher Number:

2020-01-0162

Access Restriction:

Restricted for use by site license