基于三介质换热器的电动汽车热管理系统及其性能分析

doi:10.19562/j.chinasae.qcgc.2023.11.002

Abstract

Abstract:

The electric vehicle can achieve energy conservation， emission reduction， energy storage and peak shaving， which is of great significance for the realization of China's "carbon peaking and carbon neutrality" goals. For the problems of the current thermal management system for electric vehicles of complex heat exchange processes， low system energy efficiency， and the difficulty in integration and lightweight， in this paper， a thermal management system based on the three-fluid heat exchanger for electric vehicles is proposed. The calculation model of the three-fluid heat exchanger is established through prototype experiments and tests， and the performance model of the thermal management system of the three-fluid heat exchanger is established by combining the load model and heat pump model. Besides， the operating performance of the proposed thermal management system under different conditions is analyzed and compared with the existing typical thermal management systems for electric vehicles. The results show that the energy consumption of the thermal management system with the three-fluid heat exchanger is 2.3% and 15.1% lower than that of the existing air-cooled condenser system and liquid-cooled condenser system respectively at 36 ℃ and 60 km/h in summer. And the energy consumption of the thermal management system with the three-fluid heat exchanger in the outdoor waste heat recovery mode and indoor waste heat recovery mode is reduced by 5.9% and 19.7% respectively compared with the system without waste heat recovery at 0 ℃ and 60 km/h in winter.

Key words: electric vehicle, three-fluid heat exchanger, thermal management system, performance analysis

Tianchan Yu,Yuan Wang,Wenxing Shi,Chenjiyu Liang,Xianting Li,Junping Cen,Min Luo. Performance Analysis of a Thermal Management System for Electric Vehicles Based on the Three-Fluid Heat Exchanger[J].Automotive Engineering, 2023, 45(11): 2001-2013.

Figures/Tables 19

References 23

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测量仪表	校准设备	型号	技术特征
温度传感系统	标准铂电阻温度计、标准电阻	Fluke 5609、BZ3电阻	二等
压力变送器	全自动压力校验仪	ConST811	±0.5 Pa
质量流量计	科里奥利流量计	Emerson CMF050M300N	U=0.06%（k=2）
压力表	数字压力表	ConST211	0.05级

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Performance Analysis of a Thermal Management System for Electric Vehicles Based on the Three-Fluid Heat Exchanger

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		2	33	60
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		9	36	100
	冬季	10	-10	60	乘员舱乘员：2名空气循环模式：外循环乘员舱设定温度：20 ℃
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		14	10	60
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		16	0	40
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系统参数	热泵系统参数	压缩机排量：27 cm³·r^-1 冷却液流量：0.6 m³·h^-1 送风量：350 m³·h^-1 三介质换热器空气-制冷剂换热面积：1.64 m² 三介质换热器空气-冷却液换热面积：1.64 m² 三介质换热器制冷剂-冷却液换热面积：0.19 m² 舱内蒸发器换热面积：2.29 m²
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