摘要
为探索重型纯电动商用车高低温环境下整车能量流变化规律,文章基于底盘测功机开展了不同环境温度下的重型纯电动车能量流测试,研究影响整车能量消耗量和续驶里程的主要因素。相比于常温环境,车辆在低温环境和高温环境下的电池总放电量分别减少5.1%和2.8%,续驶里程分别缩减23.6%和6.7%。通过整车能量解析发现,相对于常温环境,低温环境下车辆克服行驶阻力消耗的电量约增加8.4%,空调制热和电池正温度系数(PTC)热敏电阻开启消耗电量约占总放电量7.3%。高温环境下,电池液冷消耗电量最高,约占总放电量的3.1%,其次是直流-直流(DC/DC)变换器消耗电量,约占总放电量的2.2%,而空调制冷消耗电量不足总放电量的1%。为此,合理优化整车热管理控制策略,对降低车辆在高低温环境下的能量消耗量,提高续驶里程具有重要意义。
In order to explore the variation law of vehicle energy flow in high and low temperature environment of heavy-duty pure electric commercial vehicles,this article conducts energy flow tests on heavy-duty pure electric vehicles under different ambient temperatures using a chassis dynamometer.The study aims to investigate the primary factors affecting the vehicle's energy consumption and driving range.Compared to normal temperature conditions,the total battery discharge decreased by 5.1%and 2.8%in low-temperature and high-temperature environments,respectively,with the driving range decreasing by 23.6%and 6.7%.Through whole-vehicle energy analysis,it is found that under low-temperature conditions,the electricity consumes to overcome driving resistance increased by approximately 8.4%,the power consumption of air conditioning heating and battery positive temperature coefficient(PTC)thermistor is about 7.3%of the total discharge power.In high-temperature environments,battery liquid cooling consumes the most electricity,accounting for about 3.1%of the total discharge,followed by the direct current to direct current(DC/DC)converter consumption,which accountes for about 2.2%of the total discharge,air conditioning refrigeration consumes less than 1%of the total discharge.Therefore,optimizing the vehicle's thermal management control strategy is crucial for reducing energy consumption and improving driving range in both low-and high-temperature environments.
作者
许丹丹
高东志
李彤
黄鹏程
李腾腾
XU Dandan;GAO Dongzhi;LI Tong;HUANG Pengcheng;LI Tengteng(CATARC Automotive Test Center(Tianjin)Company Limited,Tianjin 300300,China)
出处
《汽车实用技术》
2025年第10期6-11,共6页
Automobile Applied Technology
关键词
重型纯电动车
能量流测试
能量消耗量
续驶里程
pure electric heavy-duty vehicle
energy flow test
energy consumption
driving range
