基于多工况分析的插电式混合动力汽车节能控制策略

doi:10.3969/j.issn.1674-8484.2020.04.015

汽车安全与节能学报 ›› 2020, Vol. 11 ›› Issue (4): 546-552.DOI: 10.3969/j.issn.1674-8484.2020.04.015

基于多工况分析的插电式混合动力汽车节能控制策略

牛亚卓(), 聂国乐, 杨建军^*(), 刘双喜, 白巴特尔

中国汽车技术研究中心有限公司,天津 300300, 中国

收稿日期:2020-06-17 出版日期:2020-12-30 发布日期:2021-01-04
通讯作者: 杨建军
作者简介:*杨建军,高级工程师。E-mail： yangjianjun@catarc.ac.cn。
牛亚卓(1989—),男(汉),河北,工程师。E-mail:niuyazhuo@catarc.ac.cn。

Energy saving control strategy of PHEV based on multi-condition analysis

NIU Yazhuo(), NIE Guole, YANG Jianjun^*(), LIU Shuangxi, BAI Bateer

1. China Automotive Technology and Research Center Co. Ltd, Tianjin 300300 China

Received:2020-06-17 Online:2020-12-30 Published:2021-01-04
Contact: YANG Jianjun

摘要/Abstract

摘要：

为了获得插电式混合动力汽车(PHEV)的能量管理控制策略及其节油效果,分别采用稳态工况、加速工况、制动工况以及新欧洲行驶循环(NEDC)工况,开展不同运行模式的试验分析,并搭建传统动力仿真模型进行对比。结果表明：仅低充电状态(SOC)、中低油门开度下,电机和发动机的转矩分配策略受到影响;该车辆整车需求功率在5 kW以内时采用纯电驱动,避开了发动机低效率区域;车辆进入制动能量回收模式时,电机仅提供最大50 kW的回收功率。车辆的节油率达到23.4%。因此,该PHEV车型实现了合理的运行模式管理,高效的发动机运行效率以及高效的能量利用率。

关键词: 插电式混合动力汽车(PHEV), 能量管理控制策略, 运行模式, 电池荷电状态(SOC), 制动功率, 仿真建模

Abstract:

An energy management control strategy and its fuel saving effect was obtained for plug-in hybrid electric vehicles (PHEV). Experimental analysis was made under different operating modes: Steady-state conditions, accelerated conditions, braking conditions and New European Driving Cycle (NEDC) conditions. The results were compared with a new built model of traditional dynamic simulation. The results show that the torque distribution strategy of motor and engine is affected only under low charge state (SOC) and medium and low throttle opening. When the whole vehicle demand power is within 5 kW, it adopts pure electric drive to avoid the low engine efficiency area. When the vehicle enters the braking energy recovery mode, the motor only provides the maximum recovery power of 50 kW. The vehicle fuel economy reaches 23.4%. Therefore, this PHEV vehicle realizes reasonable operation mode management with high engine operation efficiency and high energy utilization.

Key words: plug-in hybrid electric vehicle (PHEV), energy management control strategy, operation mode, state of charge (SOC), braking power, simulation modeling

中图分类号:

U461.8

牛亚卓, 聂国乐, 杨建军, 刘双喜, 白巴特尔. 基于多工况分析的插电式混合动力汽车节能控制策略[J]. 汽车安全与节能学报, 2020, 11(4): 546-552.

NIU Yazhuo, NIE Guole, YANG Jianjun, LIU Shuangxi, BAI Bateer. Energy saving control strategy of PHEV based on multi-condition analysis[J]. Journal of Automotive Safety and Energy, 2020, 11(4): 546-552.

图/表 12

整车	整备质量	1.6 t
整车	轴距	2.7 m
发动机	最大功率	110 kW
	最大转矩	250 Nm
	最高转速	6 000 r·min^-1
变速器	挡位	6
	各挡速比	3.461、2.150、1.464、1.078、1.093、0.921
	主减速比	4.059、3.140
电机	最大功率	80 kW
	最大转矩	330 Nm
	最高转速	7 000 r·min^-1
电池	电压	350 V
电池	容量	8.8 kW

表1 研究对象车辆参数

图1 混动构型及驱动模式

图2 稳态车速的转矩分配策略

图3 稳态工况整车转矩输出特性

图4 瞬态工况驱动功率分配关系

图5 加速工况整车功率输出特性

图6 30%油门加速过程

图7 不同制动强度的电机制动功率

图8 制动强度0.2的制动过程

图9 NEDC发动机工况点

图10 发动机功率概率密度分布

图11 仿真与试验总成输出转矩对比

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基于多工况分析的插电式混合动力汽车节能控制策略

Energy saving control strategy of PHEV based on multi-condition analysis

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