Research of Thermal Behaviour of Li-ion Battery Module Based on Liquid Cooling

Abstract

An effective battery thermal management system (BTMS) is crucial to ensure the battery temperature in an appropriate range and prolong the battery life. In this paper, a liquid cooling thermal management method for a li-ion battery module which is consisting of 12 prismatic batteries is set up, three circuitous channels embedded with a cooling plate are studied. Meanwhile, the performance evaluations of the battery module by considering different cooling conditions and battery arrangement are investigated numerically. The effects of the flow area of cooling plate and mass flow rate of coolant on the peak temperature and temperature difference of the battery module during charge/discharge process are examined. The larger flow area is experienced with a lower maximum temperature. Increases of maximum temperature and temperature difference are shown at lower mass flow rate. This paper provides guidance for the design and optimization of the module and thermal management.