纯电重型商用车四电机系统动力性及经济性研究

doi:10.19562/j.chinasae.qcgc.2023.01.008

Abstract

Abstract:

In order to study the power performance and economy of the pure electric heavy-duty commercial vehicles applied with the centralized central drive four motor-4AMT transmission system， according to the vehicle dynamics principle， based on the same vehicle configuration， the vehicle dynamics model with the centralized central drive four motor-4AMT transmission system and the single motor-6AMT transmission system respectively is established firstly. Secondly， different parameters such as motors， gearbox， shift points and numbers of working motors are set. Then， according to the dynamic and economic test cycles， the dynamic and economic results are obtained from simulation and verified by the tests. The results show that the centralized central drive four motor-4AMT transmission system has obvious advantages in power and economy performance.

Key words: single motor-6AMT transmission system, centralized drive four motor-4AMT transmission system, power performance, economy, pure electric heavy-duty commercial vehicle

Wenkai Huang,Huijun Cheng,Aihua Chu. Study on Power Performance and Economy of Four Motor System of Pure Electric Heavy-Duty Commercial Vehicle[J].Automotive Engineering, 2023, 45(1): 70-76.

Figures/Tables 19

References 13

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项目	指标	单位
动力性	0-80 km/h 满载加速时间	s
	60-80 km/h 满载超车加速时间	s
	满载持续最大车速	km/h
	4% 爬坡车速	km/h
	12% 爬坡车速	km/h
	满载最大爬坡度	%
经济性	C-WTVC满载百公里综合能耗	kW·h
	C-WTVC半载百公里综合能耗	kW·h
	C-WTVC空载百公里综合能耗	kW·h

整备质量/kg	25 000
满载质量/kg	55 000
半载质量/kg	33 000
轮胎半径/mm	527
整车阻力	F=2552.3+6.6083v+0.4014v²
主减速比	4.11

项目	单电机	多电机（1/4）	多电机（4/4）
类型	永磁同步电机	永磁同步电机
功率	峰值360 kW	峰值150 kW	峰值600 kW
转矩	峰值2 800 N·m	峰值300 N·m	峰值4 800 N·m
最大转速	4 000 r/min	14 000 r/min	3 500 r/min
质量	240 kg	35 kg	140 kg

性能指标	目标值	单电机方案	四电机方案
0-80 km/h起步加速时间（满载）/s	≤60	58.6	46.9
60-80 km/h超越加速时间（满载）/s	≤25	23.4	18.7
满载持续最高车速/（km·h^-1）	≥100	115.7	122.0
4%爬坡车速/（km·h^-1）	≥30	37.4	44.9
12%爬坡车速/（km·h^-1）	≥10	13.8	16.6
最大爬坡度（满载）/%	≥27	31.3	32.5

性能指标	目标值	单电机方案	四电机方案
C-WTVC百公里综合能耗（满载）/（kW·h）	≤165	159.6	159.3
C-WTVC百公里综合能耗（半载）/（kW·h）		131.4	119.5
C-WTVC百公里综合能耗（空载）/（kW·h）		112.2	92.1

Study on Power Performance and Economy of Four Motor System of Pure Electric Heavy-Duty Commercial Vehicle

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性能指标	目标值	单电机方案	四电机方案	对比
0-80 km/h起步加速时间（满载）/s	≤60	58.9	47.1	20%
60-80 km/h超越加速时间（满载）/s	≤25	23.7	17.9	24.5%
满载持续最高车速/（km·h^-1）	≥100	115.5	122.1	5.7%
4%爬坡车速/（km·h^-1）	≥30	37.3	44.7	19.8%
12%爬坡车速/（km·h^-1）	≥10	13.7	16.5	20.4%
最大爬坡度（满载）/%	≥27	31.1	32.3	3.9%
C-WTVC百公里综合能耗（满载）/（kW·h）	≤165	160.3	159.2	0.7%
C-WTVC百公里综合能耗（半载）/（kW·h）		132.1	119.3	9.7%
C-WTVC百公里综合能耗（空载）/（kW·h）		112.8	92.3	18.2%

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