搭配低温散热器的PHEV电池冷却系统的节能效果

doi:10.3969/j.issn.1674-8484.2022.04.021

摘要/Abstract

摘要：

评价了插电式混合动力车(PHEV)搭配电池低温散热器(LTR)的节能效果与投入成本。设计了配备LTR与不配备LTR的2种电池冷却架构及其控制逻辑，提出了通勤、差旅、郊游3种用户实际行车工况，分析了这2种电池冷却架构单一用户工况收益以及中国大陆典型城市年均节能量，对比了这2种电池冷却架构的性价比。结果表明：单一用户低负荷行车工况下，搭配电池低温散热器LTR具备收益的工作区间为24~27 ℃。在所讨论的用车频率下，配搭配电池低温散热器的电池冷却系统的年收益低于3.14元，这与其成本投入不匹配。建议取消在PHEV上电池冷却系统的LTR。

关键词: 插电式混合动力车(PHEV), 电池热管理系统, 低温散热器(LTR), 节能

Abstract:

This paper quantitatively evaluated the energy saving effect and investment cost of the plug-in hybrid electric vehicles (PHEVs) with Low Temperature Radiator (LTR) for batteries. Designed the two kinds of battery cooling architectures equipped with and without LTR and its control logic, and propose three user actual driving conditions as commuter, trip and travel. After analyzed the benefits of the two kinds of battery cooling architectures in single drive cycle and the average annual energy saving of some typical cities in China, the cost performance of the two architectures were compared. The results show that under single low load cycle, the working interval of LTR with profit is 24~27 ℃. At the user actual driving frequencies discussed, the benefit of battery cooling system with LTR is less than 3.14 CNY per year, which does not match Its cost input. It is recommend to cancel the LTR in the battery cooling system of PHEVs.

Key words: plug-in hybrid electric vehicle (PHEV), battery thermal management systems, low temperature radiators (LTR), energy saving

中图分类号:

U462.3

雍安姣, 项阳, 付永宏, 汪爽, 郭廷, 王勇. 搭配低温散热器的PHEV电池冷却系统的节能效果[J]. 汽车安全与节能学报, 2022, 13(4): 796-803.

YONG Anjiao, XIANG Yang, FU Yonghong, WANG Shuang, GUO Ting, WANG Yong. Energy saving effect of PHEV battery cooling system with low temperature radiator[J]. Journal of Automotive Safety and Energy, 2022, 13(4): 796-803.

图/表 13

整备质量	1.597 t
载荷质量	75 kg
电池容量	13 kWh
EV模式SOC	25% ~90%

表1 某PHEV车型主要参数

图1 某PHEV车型电池热管理架构图

图2 1RC电模型原理图

图3 电模型仿真结果与实验结果

图4 WLTC工况速度曲线及分段

图5 3种常用工况早间出行道路情况

图6 PHEV电池包保温性能简化模型示意图

图7 PHEV在各环境温度下电池包降温曲线

图8 PHEV在各环境温度下的初始温度

图9 PHEV 2种电池冷却配置的耗能与能效比

月份	工作日d	假期 d	用车工况 / 次
月份	工作日d	假期 d	通勤	差旅	郊游
一月	22	9	40	2	4
二月	11	17	18	2	8
三月	21	10	38	2	5
四月	22	8	40	2	4
五月	21	10	38	2	5
六月	19	11	34	2	5
七月	23	8	42	2	4
八月	22	9	40	2	4
九月	21	9	38	2	4
十月	19	12	34	2	6
十一月	21	9	38	2	4
十二月	22	9	40	2	4
总计	244	121	440	24	57

表2 2019年法定假日分布与用户工况分布

图10 典型城市配备LTR的年均节能量

图11 典型城市配备LTR的年均节能率

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