The invention relates to a double-motor four-gear transmission electric drive axle system which comprises a differential mechanism assembly, double motors, a first gear shifting mechanism and a second gear shifting mechanism. The differential mechanism assembly comprises a differential mechanism, a first output half shaft and a second output half shaft; the double motors, the first gear shifting mechanism and the second gear shifting mechanism are symmetrically arranged on the two sides of the first output half shaft respectively, and the double motors are connected with the differential mechanism through the first gear shifting mechanism and the second gear shifting mechanism in sequence. The first gear shifting mechanism comprises two groups of gear shaft systems with different reduction ratios, and each group of gear shaft system is selectively in transmission connection or not connected with the double motors; the second gear shifting mechanism comprises a planetary gear train, and an inner gear ring in the planetary gear train is selectively connected with or not connected with the planet carrier or the shell. Compared with the prior art, the low-gear large-torque requirement and the high-gear high-speed requirement can be considered at the same time, and it is guaranteed that the two motors are both in the optimal efficiency rotating speed interval.
本发明涉及一种双电机四挡传动电驱桥系统,包括差速器总成、双电机、第一换挡机构、第二换挡机构;差速器总成包括差速器、第一输出半轴及第二输出半轴;双电机、第一换挡机构和第二换挡机构均分别对称部署于第一输出半轴的两侧,双电机依次通过第一换挡机构和第二换挡机构与差速器相连;第一换挡机构包括减速比不同的两组齿轮轴系,每组齿轮轴系可选择地与双电机传动连接或不连接;第二换挡机构包括行星轮系,行星轮系内的内齿圈可选择地与行星架或壳体相接合或不接合。与现有技术相比,本发明可同时兼顾低挡位大扭矩需求及高挡位高速需求,同时保证两个电机均在最佳效率转速区间。
Dual-motor four-gear transmission electric drive axle system
一种双电机四挡传动电驱桥系统
2024-02-06
Patent
Elektronische Ressource
Chinesisch
Efficient four-gear electric drive axle transmission system
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