Control method of switching between series and parallel drive modes of dual-motor hybrid electric vehicle

doi:10.3969/j.issn.1674-8484.2021.01.011

Abstract

Abstract:

A non-power interrupt switching method was proposed based on a coordinated control of three power sources with analyzing of series and parallel driving modes for a dual-motor hybrid electric vehicle (HEV) to realize a series-parallel switching control of the dual-motor HEV. The series-to-parallel switching process includes three stages: engine operating point transferring, clutch coupling, and power source switching. The parallel-to-series switching process includes three stages: power source switching, clutch opening, and engine operating point transferring. The results show that the vehicle tests at a speed of 80 km/h verify the control method, the series-to-parallel switching process lasts 1.76 s, the switching impact is less than 10 m/s ³. and the parallel-to- series switching process lasts 2.57 s, the switching impact is less than 5 m/s ³, and there is no power interruption during the whole switching process. Therefore, the series-parallel switching control method can be successfully implementedy.

Key words: hybrid electric vehicle (HEV), dual-motor structure, series-parallel switching, control method

CLC Number:

U464.235

ZHU Hao, ZHANG Tianqiang, LIU Yuanzhi, XU Jialiang. Control method of switching between series and parallel drive modes of dual-motor hybrid electric vehicle[J]. Journal of Automotive Safety and Energy, 2021, 12(1): 106-115.

Figures/Tables 14

References 12

[1]	李骏, 宫艳峰, 李康, 等. 一汽集团乘用车动力总成低碳技术策略[J]. 汽车工程, 2010,32(7):555-559.
	LI Jun, GONG Yanfeng, LI Kang, et al. FAW’s low carbon strategies for car powertrain[J]. Automotive Engineering, 2010,32(7):555-559. (in Chinese)
[2]	于镒隆, 张立庆, 李旭, 等. 混合动力发动机技术现状与发展趋势[J]. 小型内燃机与车辆技术, 2018(6):75-81.
	YU Yilong, ZHANG Liqing, LI Xu, et al. The technology status and development trends of hybrid vehicle’s engines[J]. Small Internal Combu Engine Vehi Tech, 2018(6):75-81. (in Chinese)
[3]	刘华. 2016款雅阁混动车i-MMD系统详解(一)[J]. 汽车维护与修理, 2017(4):85-88.
	LIU Hua. Detailed explanation of the 2016 Accord Hybrid i-MMD system (1)[J]. Auto Maintenance & Repair, 2017(4):85-88. (in Chinese)
[4]	刘华. 2016款雅阁混动车i-MMD系统详解(二)[J]. 汽车维护与修理, 2017(5):80-83.
	LIU Hua. Detailed explanation of the 2016 Accord Hybrid i-MMD system (2)[J]. Auto Maintenance Repair, 2017(5):80-83. (in Chinese)
[5]	王成, 郭淑英, 刘凌. 串联式混合动力系统在公交客车中的开发与应用[J]. 机械工程学报, 2009(2):18-24.
	WANG Cheng, GUO Shuying, LIU Ling. Development and application of serial hybrid electric powertrain system in the bus[J]. J Mech Engi, 2009(2):18-24. (in Chinese)
[6]	刘乐. 串联混合动力汽车建模与能源管理系统控制策略研究[D]. 长春: 吉林大学, 2011.
	LIU Le. Study on model and control strategy of energy management system for SHEV[D]. Changchun: Jilin University, 2011. (in Chinese)
[7]	冯代伟. 串联型液压混合动力汽车的能量管理策略研究[D]. 成都: 电子科技大学, 2012.
	FEGN Daiwei. Study on power management strategies for a series hydraulic hybrid vehicle[D]. Chengdu: University of Electronic Science and Technology of China, 2012.
[8]	冷宏祥, 葛海龙, 孙俊, 等. 上汽荣威550插电式混合动力系统的特点[J]. 科技导报, 2016(6):90-97. doi: 10.3981/j.issn.1000-7857.2016.06.010 URL
	LENG Hongxiang, GE Hailong, SUN Jun, et al. Characteristics of SAIC Roewe 550 plug-in hybrid power system[J]. Sci Tech Review, 2016(6):90-97. (in Chinese)
[9]	张雄, 张安伟, 段心林. 广汽机电耦合系统G_MC的开发和应用[J]. 重庆理工大学学报, 2019(2):50-55.
	ZHANG Xiong, ZHANG Anwei, DUAN Xinlin. Development and application of GUANGQI electric and mechanical couple system (G-MC)[J]. J Chongqing Univ of Tech, 2019(2):50-55. (in Chinese)
[10]	Higuchi N, Sunaga Y, Tanaka M, et al. Development of a new two-motor plug-in hybrid system[R]. SAE Paper, 2013-01-1476.
[11]	Ide H, Sunaga Y, Higuchi N. Development of sport hybrid i-MMD control System for 2014 model year accord[J]. Honda R&D Tech Rev, 2013,25(2):33-41.
[12]	王光平. 双轴并联混合动力客车电机主动同步换档技术研究[D]. 长春: 吉林大学, 2006.
	WANG Guangping. Study on motor active synchronistic technology during shifting in parallel hybrid electric vehicle[D]. Changchun: Jilin University, 2006. (in Chinese)

整车整备质量	1.86 t
发动机排量	1.2 L
发动机最大转矩	170 Nm
发动机额定功率	80 kW
发动机额定转速	5 500 r/min
发电机额定转矩	80 Nm
发电机额定功率	80 kW
发电机额定转速	12 000 r/min
驱动电机额定转矩	280 Nm
驱动电机额定功率	120 kW
电池峰值放电功率	60 kW
电池峰值充电功率	40 kW

整车整备质量	1.86 t
发动机排量	1.2 L
发动机最大转矩	170 Nm
发动机额定功率	80 kW
发动机额定转速	5 500 r/min
发电机额定转矩	80 Nm
发电机额定功率	80 kW
发电机额定转速	12 000 r/min
驱动电机额定转矩	280 Nm
驱动电机额定功率	120 kW
电池峰值放电功率	60 kW
电池峰值充电功率	40 kW

模式	数值定义	文字定义
整车驱动模式/请求	9	并联驱动模式
	10	过渡过程
	11	串联驱动模式
	12	并联到串联切换请求
	13	串联到并联切换请求
串并联切换阶段	2	发动机工作点调整阶段
	3	离合器关闭阶段
	4	动力源切换阶段
	5	离合器打开阶段
	8	串联阶段
	9	并联阶段
离合器状态	0	分离
离合器状态	2	吸合

模式	数值定义	文字定义
整车驱动模式/请求	9	并联驱动模式
	10	过渡过程
	11	串联驱动模式
	12	并联到串联切换请求
	13	串联到并联切换请求
串并联切换阶段	2	发动机工作点调整阶段
	3	离合器关闭阶段
	4	动力源切换阶段
	5	离合器打开阶段
	8	串联阶段
	9	并联阶段
离合器状态	0	分离
离合器状态	2	吸合