Two Air-cooling Configurations for Battery Management System

Shuang Lv, Qie Sun, Ronald Wennersten

Abstract


The calendar life and performance of power battery are closely related to its operating temperature; hence, the battery thermal management system (BTMS) is the key technology for electric vehicle. An air cooling based thermal management system for 18650 battery pack is studied in this paper. First, A coupled electrochemical thermal model is constructed to evaluate the heat generation under different discharge rate. Then transient temperature distribution of one cell during discharge is studied. Following that, the effect of air mass flow rate on the temperature of the cells and the maximum temperature appear area are investigated. Results show that the temperature uniformity could be satisfied for the designed U-type structure when the air mass flow rate is larger than 0.02 kg/s. But it is hardly to achieve the requirement of temperature uniformity for Z-type, and the maximum temperature appears at the first column at the airflow direction.

Keywords


Battery thermal management system, Airing cooling, Z-type and U-type, Temperature distribution


DOI
10.12783/dteees/iceee2018/27863

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