摘要
为获得纯电动汽车动力传动系统合理的设计方案,对纯电动商用车匹配单级减速器、2挡变速器或3挡变速器的能耗和成本进行了分析研究.基于电动机效率自主生成法建立了备选电动机数据库,以经济性为目标对数据库中每一电动机适用的传动系速比进行优化,建立了动力传动系统成本模型,并对系统总成本进行预估.结果表明:对于大部分电动机,匹配2挡变速器较单级减速器系统平均能耗可降低2%～10%、平均成本可降低1%～4%,而匹配3挡变速器较2挡能耗降低比例小于4%、成本降低幅度小,甚至出现成本增加情况.因此,基于能耗和成本平衡角度,将2挡传动系统定为该车型最合理的设计方案,并从效率最优角度匹配获得该纯电动商用车动力传动系统的参数.
To achieve the optimal design of powertrain for electric vehicles(EVs),the consumption and cost of EVs with one-speed,two-speed and three-speed transmission system were analyzed and compared.A finite-element-based method was proposed to generate torque-speed curves and efficiency maps of electric motors rapidly,and a motor database with more than two thousand motors was built based on the method.The speed ratio of each motor in database was optimized,and a cost model was built to estimate the total cost for powertrain.The results show that compared with the EVs with one-speed transmission,the consumption of EVs with two-speed transmission is decreased by 2%-10%in average,and the cost is decreased by 1%-4%.Compared with the two-speed type,the EVs with three-speed transmission has slight decrease of less than 4%,while the cost may be even increased.The EVs with two-speed transmission is practically best in a balanced view,and further increase of speeds can not lead to better solution.
作者
邱立琦
王良模
邹小俊
宋伟
叶进
QIU Liqi;WANG Liangmo;ZOU Xiaojun;SONG Wei;YE Jin(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing,Jiangsu 210094,China;Nanjing IVECO Automobile Co.,Ltd.,Nanjing,Jiangsu 210028,China)
出处
《江苏大学学报（自然科学版）》
EI
CAS
北大核心
2019年第1期16-21,共6页
Journal of Jiangsu University：Natural Science Edition
基金
汽车仿真与控制国家重点实验室开放基金资助项目(20160105)
