摘要
新能源有轨电车的动力电池间歇性工作、充放电时发热量大,一般需要配置各种形式的散热装置。采用变频空调设计电池箱的热管理系统,其热泵功能在高温或低温环境时可将箱内温度控制在合理范围之内。本工作提出一种适用于此热管理系统空调的多温融合温区控制方法,主要包括压缩机频率计算和动态温度区间控制两方面。用环境温度和电池温度修正回风温度,兼顾提高空调运行效率和响应速度,并以修正后的温度参数参与计算压缩机频率。箱内温度控制为较宽范围的温度区间,并以回风温度的变化趋势动态调整区间范围,减少空调制冷/制热时间的同时抑制回风温度异常上升。还介绍了通风机和冷凝风机的变频调速控制方法。对应用此方法的电池箱(及空调)进行试验测试,空调能耗下降约4%,电池最高温度降低近2℃。结果表明,所述方法既能实现电池箱温度调控需求、优化电池环境,又能降低热管理系统的运行能耗。应用所述热管理系统的动力电池箱经过试验考核后已装车运用。
The power battery of the new energy tram operates intermittently and generates significant heat during charging and discharging,with hysteresis in heat transfer from the inside of the battery module to the surface.Generally,various forms of heat dissipation devices need to be configured.When the thermal management system of the battery is designed using an inverter air conditioner,the battery can control the temperature within a reasonable range using its heat pump characteristics.This paper introduces a multi temperature fusion temperature zone control method suitable for this thermal management system,which primarily consists of a compressor frequency calculation method and dynamic temperature interval control.Based on the return air temperature,the ambient temperature is introduced to correct it as well as improve the air conditioner's operation efficiency;the battery temperature is introduced to make a secondary correction as well as improve the response speed of the air conditioner,and the corrected temperature is used to participate in the frequency calculation of the compressor.The temperature in the box is controlled as a wide range of temperature range,which is dynamically adjusted according to the change trend of return air temperature,so that the cooling or heating time of air conditioner is reduced and the abnormal rise of return air temperature is suppressed.The frequency conversion speed regulation control methods of the internal fan and condensing fan are also introduced.A comparative experimental test was performed on the battery box(and air conditioner)using this method.The energy consumption of the air conditioner is reduced by about 4%and the maximum temperature of the battery is reduced by nearly 2℃compared with the comparative control method.The results show that the method can not only realize the demand for temperature regulation of the battery box and optimizes the battery environment,but also reduce the energy consumption of the air conditioner.The power battery box with the thermal man
作者
吕艳宗
韩冰
王宏宇
徐杨非
张星
LV Yanzong;HAN Bing;WANG Hongyu;XU Yangfei;ZHANG Xing(CRRC Qingdao Sifang Rolling Stock Research Institute Co.,Ltd.,Qingdao 266031,Shandong,China;CRRC SRI Chongqing S&T Co.,Ltd.,Chongqing 401133,China)
出处
《储能科学与技术》
CAS
CSCD
北大核心
2022年第10期3231-3238,共8页
Energy Storage Science and Technology
基金
车载电容储能系统及控制技术研究(2017YFB1201004-13)
新型车载储能系统装备研制(2018YFB1201605-12)。
关键词
电池热管理
多温融合
动态温区
变频空调
battery thermal management
multi temperature integration
dynamic temperature zone
inverter air conditioner
