基于R290工质的电动汽车集成式热管理系统性能研究

doi:10.19562/j.chinasae.qcgc.2025.05.013

Abstract

Abstract:

To meet the stringent thermal management requirements of electric vehicles and address global climate change issues， in this paper an integrated thermal management system is developed for electric vehicles based on R290 refrigerant. The system's performance is analyzed and validated through simulation and experiments. The results show that the cooling and heating capacities of the R290 dual-side indirect thermal management system increase with the increase of the compressor speed， while the coefficient of performance （COP） decreases with the increase of the compressor speed. The heating capacity from the compressor’s hot gas bypass increases with higher system pressures. Under high-temperature cooling conditions at 40 ℃， the system’s maximum cooling capacity is 9.25 kW. Under low-temperature heating conditions at -18 ℃， the maximum heating capacity is 7.24 kW. At extremely low temperatures of -20 ℃， the maximum heating capacity from the compressor’s hot gas bypass is 4.3 kW.

Key words: electric vehicles, integrated thermal management system, R290, hot gas bypass

Yi Luo,Wenbin Ma,Ling Su,Yueqiao Liu,Bo Xiao. Research on the Performance of an Integrated Thermal Management System for Electric Vehicles Based on R290 Refrigerant[J].Automotive Engineering, 2025, 47(5): 931-939.

Figures/Tables 16

References 13

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测试工况	压缩机转速/ （r·min^-1）	压缩机功率/ W	电池冷板进水温度/℃	Chiller换热量/ W	WCC换热量/ W	Radiator换热量/ W	COP
1	2 170.24	1 007.81	20.00	4 016.24	4 879.95	7 890.90	3.99
2	3 705.75	1 920.40	20.00	6 016.24	7 648.71	10 666.57	3.14
3	5 733.47	3 219.59	20.00	8 016.24	10 753.10	13 770.87	2.49
4	8 760.04	5 230.50	20.00	10 016.24	14 462.50	17 480.15	1.91
5	10 000.00	6 194.78	21.70	11 016.20	16 282.14	19 299.74	1.78
6	6 801.35	3 841.96	20.00	9 016.24	12 282.15	12 299.87	2.35
7	8 449.62	4 949.02	20.00	10 016.24	14 223.21	14 240.87	2.02
8	10 000.00	6 091.06	20.00	11 016.21	16 193.99	16 211.56	1.81

测试工况	压缩机转速/ （r·min^-1）	压缩机功率/W	HTC出风温度/℃	Radiator吸热量/W	Chiller换热量/ W	WCC换热量/ W	HTC换热量/ W	COP
1	4 148.09	1 644.32	45.00	3 436.63	3 453.49	4 851.26	4 869.22	2.95
2	5 773.16	2 133.92	45.00	3 661.02	3 678.02	5 491.99	5 509.93	2.57
3	8 168.83	2 726.64	45.00	3 822.12	3 839.24	6 157.05	6 174.98	2.26
4	10 000.00	2 812.42	39.43	3 801.62	3 818.86	6 209.59	6 227.69	2.21
5	3 784.08	1 549.12	45.00	517.62	3 534.42	4 851.26	4 869.22	3.13
6	5 224.01	2 019.38	45.00	758.46	3 775.39	5 491.99	5 509.93	2.72
7	7 301.27	2 587.61	45.00	940.37	3 957.42	6 157.05	6 174.98	2.38
8	10 000.00	3 001.58	43.48	1 019.95	4 037.13	6 673.66	6 691.62	2.15

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Research on the Performance of an Integrated Thermal Management System for Electric Vehicles Based on R290 Refrigerant

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