关键词: 电动, 四轮驱动, 农用车, 牵引试验, 经济性

Abstract: To solve the problem of traditional agriculture vehicle in environmental protection, power performance, a new type of multifunctional agricultural vehicle with electric fourwheel drive was developed and tested for its traction performance. In the power system scheme, the rear drive axle was driven by one central motor, the front drive axle used two independently driven hub motors, and the system matching design was carried out according to the operation of agricultural vehicles and driving conditions. The tractive operation dynamics of the whole machine were analyzed, and the traction characteristics and economic analysis were carried out. The results showed that the electric agricultural vehicle had good traction performance and economy. In terms of traction performance, the maximum traction force of the machine of rear wheel drive was 1 925 N and the maximum traction efficiency was 74%. In terms of economy, the energy consumption per unit area and the cost per unit area of intertillage were reduced to 42.4% and 80.1%, respectively, of that of traditional oil tractor. The electric agricultural vehicle meets the needs for green and environmentfriendly new agricultural production in places such as greenhouses and facilities such as facility agriculture and sightseeing leisure agriculture while also providing a reference for the design of new electric agricultural vehicles.

Key words: electric, four wheel drive, agricultural vehicles, traction test, economy