Small-sized pure electric automobile power assembly

Abstract

The invention relates to a power assembly for a miniature pure electric vehicle; wherein, a first transmission shaft is connected with an output shaft of a motor by an automatic clutch; a first gear of a first shaft and a second gear of the first shaft are fixedly sheathed on the first transmission shaft; a first gear of a second shaft and a second gear of the second shaft are hollowly sheathed with on a second transmission shaft; a variable synchronous joint sleeve is arranged between the first gear of the second shaft and the second gear of the second shaft; the variable synchronous joint sleeve is connected with the second transmission shaft by a spline and can move axially on the second transmission shaft; the second transmission shaft is also fixedly sheathed with a decelerating active gear which is often meshed with a decelerating driven gear on the second transmission shaft. The power assembly takes the motor as power, adopts self-adaptive control of the motor, an automatic clutch and a speed change mechanism, so that the whole power assembly is simple and compact in structure, easy in assembly, light in weight, low in cost and comfortable in operation, not only fundamentally solves the problem of environmental pollution but also effectively reduces the producing cost of the electric vehicle.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and in particular relates to a power assembly of a small pure electric vehicle. Background technique [0002] At present, due to the pollution of fuel vehicles to the environment and the rising international oil prices, various automobile manufacturers have stepped up the research of electric vehicles, especially small pure electric vehicles, which have become the research direction of domestic and foreign automobile companies. [0003] Small pure electric vehicle refers to a new type of vehicle with a vehicle mass below 900kg and purely powered by electricity. The power indicators of small pure electric vehicles refer to the test standard of GB 18385-2001: the maximum speed ≥ 100km / h; 20%. The economic indicators of small pure electric vehicles refer to the test standards of GB 18386-2001: energy consumption rate ≤ 10kWh / 100km; driving range ≥ 100km; braking energy recovery rate ≥ 10%. Th...

AI Technical Summary

Problems solved by technology

Although the fuel cell vehicle has the advantages of energy saving and environmental protection, the driving mechanism it adopts is still a gearbox + differential mode. Due to the shortcomings of the gearbox, such as complex structure, difficult assembly, heavy weight, and high manufacturing cost, it will greatly increase the cost of the entire vehicle. production cost

At the same time, fuel cells are very expensive and basically rely on imports, and fuel cell engines have poor peak power output capabilities, slow dynamic response, and cannot recover braking energy. The model is not suitable for the technical requirements and economic requirements of small pure electric vehicles

Images