Power assembly for pure electric heavy truck

Abstract

The invention discloses a power assembly for a pure electric heavy truck. The power assembly comprises a driving motor, a gearbox mechanical body and a control mechanism, wherein the driving motor isconnected with the gearbox mechanical body through a spline; the control mechanism is arranged above the gearbox mechanical body; the driving motor is a pure electric permanent magnet synchronous motor, the gearbox mechanical body is a synchronizer-free gearbox including six forward gears, and the control mechanism is an electrically controlled pneumatic control mechanism. The power assembly is not provided with an auxiliary box and a synchronizer, so that the structure of the gearbox is greatly simplified; by utilizing a synchronizer-free structure, the faults that a frication ring of the synchronizer of the gearbox easily falls and is easily worn are avoided, the service cycle of a transmission is increased, and the service life of the transmission is prolonged; and by replacing a traditional electric shifting mechanism with the electrically controlled pneumatic control mechanism, the switching of shifts is controlled, so that the service life of a shifting mechanism is prolonged. Meanwhile, the power assembly is not provided with a physical reverse gear, the switching of shifts is realized through the electrically controlled pneumatic control mechanism, the structure is compact,and easily damaged components such as the synchronizer are not adopted, so that the power assembly is high in reliability and can meet the market demands.

Description

technical field [0001] The invention belongs to the technical field of automobiles and relates to a power assembly of a pure electric heavy truck. Background technique [0002] Studies have shown that in vehicle exhaust emissions, the emissions of a heavy truck are equivalent to the emissions of 60-100 cars. Today, with rising fuel prices and deteriorating urban environments, the advantages of pure electric vehicles with zero emissions are becoming more and more obvious. Therefore, it is an inevitable trend to reduce vehicle exhaust emissions, improve the natural environment, and use new energy pure electric heavy trucks. [0003] At present, most of the assembly structures applied to pure electric heavy trucks are partially modified on the basis of the structure with auxiliary tanks. However, since the number of gears of the main box is usually 6, the gears of the gearbox with the structure of the auxiliary box are basically more than 6, and the synchronizer of the auxili...

AI Technical Summary

Problems solved by technology

However, since the number of gears of the main box is usually 6, the gears of the gearbox with the structure of the auxiliary box are basically more than 6, and the synchronizer of the auxiliary box is easy to wear, the reliability is poor, the maintenance cost is high, and the maintenance cycle is short

Moreover, the assembly of the current pure electric heavy-duty truck usually adopts an electric shift mechanism, which has a low service life.

Images