Electromobile power assembly and application thereof

Abstract

The invention relates to an electromobile power assembly and an application of the electromobile power assembly. The electromobile power assembly comprises an integrated drive motor, a transmission, a clutch, a differential mechanism and an oil pump; a motor shaft of the drive motor is in drive connection with one end of an input shaft of the transmission; the other end of the input shaft of the transmission is connected with the oil pump; the input shaft of the transmission is in drive connection with a differential mechanism gear of the differential mechanism through a first transmission gear and a second transmission gear; the clutch is arranged on the input shaft of the transmission and is in drive connection with the first transmission gear; and the drive motor is provided with a motor sensor. The electromobile power assembly effectively switches the gear according to the actual condition of an electromobile, so that the operating conditions of the electromobile better accords with the actual road condition, the working efficiency of the electromobile is improved, meanwhile, the performance of the existing electromobile is optimized, the starting is stable, the gear is smoothly and rapidly switched, the operation of the electromobile is efficient and safe, and the smoothness and the reliability of the operation the whole electromobile are improved.

Description

technical field [0001] The invention relates to an electric vehicle power assembly and its application, belonging to the technical field of electric vehicles. Background technique [0002] With the rise of fuel prices and the continuous enhancement of people's awareness of environmental protection, electric vehicles have the characteristics of "zero" emissions. High-speed electric vehicles generally use clutches and traditional manual transmissions to change gears, the operation is complicated, and the driver's labor intensity is high. In addition, clutches and transmissions will greatly increase the cost of electric vehicles, which is not conducive to the miniaturization of electric vehicles; at present, automatic The gear shifting has not yet realized a very smooth control system that starts directly at high speed; the control strategy of automatic gear shifting only judges the timing of gear shifting based on the vehicle speed, ignoring the actual working conditions of th...

AI Technical Summary

Problems solved by technology

[0002] With the rise of fuel prices and the continuous enhancement of people's awareness of environmental protection, electric vehicles have the characteristics of "zero" emissions. High-speed electric vehicles generally use clutches and traditional manual transmissions to change gears, the operation is complicated, and the driver's labor intensity is high. In addition, clutches and transmissions will greatly increase the cost of electric vehicles, which is not conducive to the miniaturization of electric vehicles; at present, automatic The gear shifting has not yet realized a very smooth control system that starts directly at high speed; the control strategy of automatic gear shifting only judges the timing of gear shifting based on the vehicle speed, ignoring the actual working conditions of the vehicle, so that the speed of the vehicle may reach the point of shifting. If the actual operating condition is climbing, the power of the motor limits the output torque under this acceleration, and there may be operating failures: failure to climb uphill, resulting in power failure of the vehicle, and motor blockage Burning or frequent gear shifting will seriously affect the life of the gear shifting actuator and the safety and reliability of the vehicle; therefore, it is necessary to provide an electric vehicle powertrain that can automatically switch gears according to the driving conditions of the electric vehicle. Actively adapt to road surface changes and driving needs to improve the power and economy of electric vehicles

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