中文摘要：

针对当前传统内燃机汽车技术的成熟与混合动力汽车和纯电动汽车技术的发展,为了更好地适应动力的匹配和得到更高的能量利用率,车用机、电、液多路功率流耦合技术蓬勃发展起来。多路功率流耦合问题是两路及两路以上的能量传递和能量交汇分配问题,阐述了当前最具有研究价值的机械耦合、电动耦合和液压耦合技术,为今后的车用机、电、液多功率流耦合系统的研究提供了一定的参考。

英文摘要：

According to the maturity of traditional internal combustion engine automobile technology and the development of hybrid vehicles and pure electric vehicle technology, in order to better adapt to power matching, and get a higher energy utiliza- tion rate, the power flow coupling technology of engine, electricity and liquid for vehicles has been developed vigorously. A power flow coupling problem is the problem of energy transfer and energy intersection distribution of two or more routes. This paper in- troduces mechanical coupling, electric coupling and hydraulic coupling, the most valuable coupling technology at present, and provides certain reference for the research of power flow coupling technology of engine, electricity and liquid for vehicles.