基于浸没式液冷冷却的锂电池热管理系统数值计算研究  

Numerical Simulation of Thermal Management System of Lithium Battery Based on Immersion Liquid Cooling

作　　者：裴波 王磊 杨栋梁 孔楠 卢鑫[2] 秦江[2] Pei Bo;Wang Lei;Yang Dongliang;Kong Nan;Lu Xin;Qin Jiang(Wuhan Institute of Marine Electric Propulsion,Wuhan 430064,China;Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]武汉船用电力推进装置研究所,武汉430064 [2]哈尔滨工业大学,哈尔滨150001

出　　处：《船电技术》2020年第11期1-5,共5页Marine Electric & Electronic Engineering

摘　　要：随着电动交通工具的普及,电动驱动、续航里程、运行稳定性已经成为人们衡量电动设备性能的关键指标,而动力电池组的温度是决定电动交通工具性能的重要因素,在高温或低温环境对电池组进行相应的散热及预热势在必行。本文通过CFD建模的方式分析电池组在使用浸没式冷却方式的情况下,根据不同的导热油进口温度,分析电池组的预热和散热的情况以及预热所需时间。并通过matlab建立热泵供冷和供热的数学模型,在热泵不同的运行模式下计算得出热泵的能耗,随着导热油进口温度的增加,电池组恢复到正常温度的时间逐渐降低,在导热油进口温度为45℃下,只需4 min即可将电池组温度升高至0℃以上,而导热油温度为25℃时,需要8 min才能将温度提升至0℃以上,预热所需时间相差一半。With the popularity of electric vehicles,electric drive,endurance mileage and operation stability have become the key factors for people to measure the performance of electric equipment,and the temperature of power battery pack is an important factor to determine the performance of electric vehicles.So it is imperative to dissipate the heat of the battery pack in high temperature environment or preheat the battery in low temperature environment.In this paper,the CFD modeling method is used to analyze the preheating and heat dissipation of the battery pack and the time required for preheating according to the different inlet temperature of heat-transfer oil.The mathematical model of heat pump cooling and heating is established by MATLAB.The energy consumption of heat pump is calculated under its different operation modes.With the increase of the inlet temperature of heat transfer oil,the time span for the battery group to return to normal temperature gradually decreases.When the inlet temperature of heat transfer oil is at 45℃,the temperature of battery group can be increased to 0℃in 4 minutes,while the temperature of heat transfer oil is at 25℃,8 minutes should be needed for the temperature up to 0℃.

关 键 词：动力电池组 预热 能耗 导热油进口温度 

分 类 号：TM912[电气工程—电力电子与电力传动]