Adaptive energy recovery control strategy based on road conditions and driving habits

doi:10.3969/j.issn.1674-8484.2023.01.013

Abstract

Abstract:

In order to improve the energy-saving level of electric vehicles, an adaptive energy recovery control strategy that can be adjusted according to external environmental conditions and driving habits was designed by using the method of combining theoretical analysis and actual road test calibration. The energy consumption comparison test was carried out by real vehicles under 3 typical road conditions. The results shows that compared with the fixed-intensity energy recovery strategy, the adaptive sliding energy recovery system can effectively identify the current driving conditions and driving habits and adaptively adjust the vehicle’s sliding energy recovery intensity, which can reduce energy consumption by 4.35%, 3.55% and 0.86% in mountainous, suburban and high-speed road conditions, respectively, which proves that the adaptive energy recovery control strategy proposed can significantly improve the energy saving level of electric vehicles.

Key words: energy recovery control strategy, adaptive control, driving habit, road condition, gradient

CLC Number:

U461.8

WU Hao, DING Wenmin, WEI Gaungjie, HU Jun, YOU Daoliang. Adaptive energy recovery control strategy based on road conditions and driving habits[J]. Journal of Automotive Safety and Energy, 2023, 14(1): 106-117.

Figures/Tables 18

References 15

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判断条件（“且”）		路况标志位
v_avg / (km?h^-1)	怠速停车次数n_stp / 次	路况标志位
< 20	≥ 3	城市拥堵
< 20	<	城市一般
20≤v_avg< 45	-	城市顺畅
45≤v_avg< 60	-	郊区一般
60≤v_avg< 75	-	郊区顺畅
≥ 75	-	高速

判断条件（“且”）		路况标志位
v_avg / (km?h^-1)	怠速停车次数n_stp / 次	路况标志位
< 20	≥ 3	城市拥堵
< 20	<	城市一般
20≤v_avg< 45	-	城市顺畅
45≤v_avg< 60	-	郊区一般
60≤v_avg< 75	-	郊区顺畅
≥ 75	-	高速

整备质量	1.8 t
测试质量	1.95 t
电池电量	60 kW? h
驱动形式	单电机、前驱
电机峰值扭矩	280 Nm
电机峰值功率	120 kW
SOC初始状态	100 %
附件设置	关闭空调、风扇、大灯

整备质量	1.8 t
测试质量	1.95 t
电池电量	60 kW? h
驱动形式	单电机、前驱
电机峰值扭矩	280 Nm
电机峰值功率	120 kW
SOC初始状态	100 %
附件设置	关闭空调、风扇、大灯

序号	类别	工况	程序	车辆?驾驶员	每100 km电耗 / kWh		节能率 %
序号	类别	工况	程序	车辆?驾驶员	优化组	对照组	节能率 %
01	两车对比	城郊		V1车(在前) ?司机1； V2车?司机2	15.47	16.22	3.53
02		城郊		V1车?司机2； V2车(在前) ?司机1	14.07	14.4	3.53
03		高速	V1车-基础 V2车-新	V1车(在前) ?司机1；V2车?司机2	18.91	18.94	0.32
04		高速	V1车-基础 V2车-新	V1车?司机2； V2车(在前) ?司机1	18.77	18.86	0.32
05		山区		V1车(在前) ?司机1；V2车?司机2	17.28	17.02	2.91
06		山区		V1车?司机2； V2车(在前) ?司机1	16.7	17.98	2.91
07	单车对比	城郊	新	V2车，司机1	14.57	?	3.57
08		城郊	基础	V2车，司机1	?	15.11	3.57
09		高速	新	V2车，司机1	22	?	1.39
10		高速	基础	V2车，司机1	?	22.31	1.39
11		山区	新	V2车，司机1	17.23	?	5.79
12		山区	基础	V2车，司机1	?	18.29	5.79