Article(id=1194645352985891501, tenantId=1146029695717560320, journalId=1189645257101713411, issueId=1194655769917367247, articleNumber=null, orderNo=null, doi=10.19822/j.cnki.1671-6329.20240080, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1762755247588, onlineDateStr=2025-11-10, pubDate=1746374400000, pubDateStr=2025-05-05, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1762755247588, onlineIssueDateStr=2025-11-10, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1762755247588, creator=13701087609, updateTime=1762755247588, updator=13701087609, issue=Issue{id=1194655769917367247, tenantId=1146029695717560320, journalId=1189645257101713411, year='2025', volume='', issue='5', pageStart='1', pageEnd='62', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1762757731179, creator=13701087609, updateTime=1762757731179, updator=13701087609, preIssue=null, nextIssue=null, ext=null, issueFiles=null}, startPage=34, endPage=36, ext={EN=ArticleExt(id=1194645353241744047, articleId=1194645352985891501, tenantId=1146029695717560320, journalId=1189645257101713411, language=EN, title=Research on Drivability Evaluation of Battery Electric Vehicles with Disconnect Devices, columnId=null, journalTitle=Automotive Digest, columnName=null, runingTitle=null, highlight=null, articleAbstract=

To enhance driving performance during drive mode transitions in battery electric vehicles, a controllable disengagement device is integrated between the front axle electric drive assembly and the differential, enabling timely switching between four-wheel-drive (4WD) and two-wheel-drive (2WD) modes. First, a dual-motor four-wheel-drive pure electric vehicle configuration incorporating the disengagement device is constructed, and the energy flow characteristics of 2WD and 4WD modes are analyzed. Second, mode transition conditions are designed based on driving scenario requirements, and a phased torque transfer control strategy is developed. Finally, seven categories of drivability evaluation scenarios are proposed, along with objective evaluation metrics. Experimental validation demonstrates that the proposed configuration significantly enhances the vehicle’s driving performance and ride comfort.

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为提升纯电动汽车驱动模式切换过程中的驾驶性能，通过在前轴电驱总成与差速器间增设可控断开装置，实现四驱与两驱模式的适时切换。首先，构建双电机四驱纯电动汽车加装断开装置的构型，分析两驱与四驱模式能量流特征。其次，基于驾驶工况需求设计模式切换条件，开发分阶段扭矩转移控制策略。最后，提出7类驾驶性评价工况，并建立客观评价指标。实车验证表明所提出的构型有效提升了车辆驾驶性能及乘坐舒适性。

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类别	参数	数值
整车参数	长/宽/高/mm	4 980/1 915/1 490
	轴距/mm	3 000
前动力电机	峰值功率/kW	202
	峰值转矩/N·m	306
后动力电机	峰值功率/kW	253
	峰值转矩/N·m	450
动力电池	能量/kW·h	111

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样车参数

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类别	参数	数值
整车参数	长/宽/高/mm	4 980/1 915/1 490
	轴距/mm	3 000
前动力电机	峰值功率/kW	202
	峰值转矩/N·m	306
后动力电机	峰值功率/kW	253
	峰值转矩/N·m	450
动力电池	能量/kW·h	111

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工况	评价结果
静止两驱切换为四驱	无可感知的冲击耸动，偶尔可听到金属吸合声，不会引起抱怨
静止四驱切换为两驱
蠕行两驱切换为四驱	蠕行过程车速稳定，无可感知的冲击耸动
蠕行四驱切换为两驱
等速两驱切换为四驱	等速过程车速稳定，无可感知的冲击耸动
等速四驱切换为两驱
滑行两驱切换为四驱	减速顺畅，减速感线性，无可感知的冲击耸动
滑行四驱切换为两驱
制动两驱切换为四驱	减速顺畅，减速感线性，无可感知的冲击耸动
制动四驱切换为两驱
加速两驱切换为四驱	加速顺畅，加速感线性，无可感知的冲击耸动

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驾驶性评价结果

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工况	评价结果
静止两驱切换为四驱	无可感知的冲击耸动，偶尔可听到金属吸合声，不会引起抱怨
静止四驱切换为两驱
蠕行两驱切换为四驱	蠕行过程车速稳定，无可感知的冲击耸动
蠕行四驱切换为两驱
等速两驱切换为四驱	等速过程车速稳定，无可感知的冲击耸动
等速四驱切换为两驱
滑行两驱切换为四驱	减速顺畅，减速感线性，无可感知的冲击耸动
滑行四驱切换为两驱
制动两驱切换为四驱	减速顺畅，减速感线性，无可感知的冲击耸动
制动四驱切换为两驱
加速两驱切换为四驱	加速顺畅，加速感线性，无可感知的冲击耸动

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