摘要
当前的电动汽车技术,充电桩、动力电池以及车辆本身正朝着高压和大电流充电的方向发展。在此背景下,大功率充电的安全性成为了行业内广泛关注和讨论的焦点议题。大功率充电为电动汽车快速补能提供了新的解决方式。由于大功率充电接口的载流过大,快速的温度升高所导致的热安全隐患使其无法满足长时间补能要求,需要较强的冷却能力以确保充电过程的顺利进行。液冷是目前大功率充电接口最常用的冷却方式,然而不同载流大小、冷源占空比和环境温度影响下的稳定性还有待进一步研究确定。因此,本文针对液冷大功率充电接口在载流大小、冷源占空比和环境温度三种常见工况参数下的温升情况进行对比,研究大功率充电接口的热安全影响。
In the current electric vehicle technology,charging piles,power batteries and the vehicle itself are developing in the direction of high voltage and high current charging.In this context,the safety of high-power charging has become the focus of extensive attention and discussion in the industry.High-power charging provides a new solution for rapid energy replenishment of electric vehicles.Due to the large current carrying capacity of the high-power charging interface,the thermal safety hazard caused by the rapid temperature rise makes it unable to meet the requirements of long-term energy replenishment,and requires strong cooling capacity to ensure the smooth charging process.Liquid cooling is the most commonly used cooling method for high-power charging interfaces.However,the stability under the influence of different current carrying capacity,cold source duty cycle and ambient temperature remains to be further studied.Therefore,this paper compares the temperature rise of the liquid-cooled high-power charging interface under three common working conditions:current carrying capacity,cold source duty cycle and ambient temperature,and studies the thermal safety impact of the high-power charging interface.
作者
薛子章
古玉
张宝强
王娇娇
李晓
Xue Zizhang;Gu Yu;Zhang Baoqiang;Wang Jiaojiao;Li Xiao(CATARC New Energy Vehicle Test Center(Tianjin)Co.,Ltd.,Tianjin 300300)
关键词
大功率充电接口
环境温度
热安全
high-power charging interface
environmental temperature
thermal safety
