The invention provides an extended-range electric four-wheel drive system and an automobile. The extended-range electric four-wheel drive system comprises an engine, a generator, a drive motor, a power battery, a two-gear electric drive transmission, a mechanical front drive axle, a mechanical rear drive axle, walking front wheels and walking rear wheels. A vehicle control unit is connected with the engine control unit, the generator control unit, the battery management system, the driving motor control unit and the gear shifting and differential lock control unit. A driving motor of the extended-range electric four-wheel drive system realizes motor and power generation functions at the same time. When the engine works normally, power required by power accessories and generated power are provided; the vehicle control unit adopts a power following strategy to control the rotating speed and the output power of the engine and the generator; and the two-gear electric drive gearbox normallyworks to form a full-time four-wheel drive structure. The structure and the control logic are simple and reliable, the universalization of parts is high, the cost is low, the road surface and climateadaptability is high, and the impact vibration resistance, the sealing performance and the structural durability are high.
本发明提供一种增程式电动四驱系统及汽车,增程式电动四驱系统包括发动机、发电机、驱动电机、动力电池、两档电驱动变速器、机械式前驱动桥、机械式后驱动桥、行走前轮和行走后轮连接。整车控制器连接发动机控制单元、发电机控制单元、电池管理系统、驱动电机控制单元和换挡及差速锁控制单元。增程式电动四驱系统的驱动电机同时实现电机和发电功能。在发动机正常工作时,提供动力附件所需和发电的功率;整车控制器采用功率跟随策略对发动机和发电机进行转速和输出功率控制;两档电驱动变速箱正常工作,形成全时四驱结构。结构和控制逻辑简单可靠,零部件通用化高,成本低,路面和气候适应性强,耐冲击振动性能、密封性能、结构耐久性强。
Extended-range electric four-wheel drive system and automobile
一种增程式电动四驱系统及汽车
2020-05-29
Patent
Electronic Resource
Chinese
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