Mechanical transmission automatic shift system used for electromobile

Abstract

The invention discloses a mechanical transmission automatic shift system used for an electromobile and belongs to the automatic shift technical field. The automatic shift system is characterized in that a clutch and a transmission are connected in series between a drive motor and a driving axle, and a clutch position sensor LHW and a control mechanism of the clutch position sensor LHW are additionally arranged on the clutch; the transmission is changed into an automated mechanical transmission (AMT), a vehicle speed sensor is close to the driving axle, and a motor ECU (electronic control unit) is connected with a mechanical automatic transmission ECU used for the electromobile; and the automatic mechanical transmission ECU is used for receiving a vehicle running state signal from each sensor and outputting a control signal of each actuator electromagnetic valve as well as various related display signals, controlling a gear-selecting mechanism, a gear-pushing mechanism, a clutch control mechanism and a motor to realize automatic shift. The automatic shift system provided by the invention has the advantages of improving the gear shift performance, improving the dynamic property and economy of a vehicle, shortening the joint time of the clutch, and prolonging the service life of the clutch, and reducing the impacting degree of the joint process, and improving the driving comfortableness.

Description

technical field [0001] The invention belongs to the technical scope of automatic shifting, and in particular relates to an automatic shifting system of a mechanical transmission for an electric vehicle. Background technique [0002] Electric vehicles are currently a research hotspot in countries all over the world, and they are one of the important ways to solve energy crisis and environmental pollution. Electric vehicles have higher requirements on the performance of the drive motor, requiring the motor to provide higher instantaneous torque in the constant torque area and higher operating speed in the constant power area, so as to meet the maximum speed, climbing and acceleration of the vehicle. performance requirements. However, electric vehicles generally use a one-stage fixed speed ratio reducer, so that the electric vehicle has only one gear, and the electric vehicle motor often works in a low-efficiency area, which not only wastes electric energy, reduces the driving...

AI Technical Summary

Problems solved by technology

[0003] The manual transmission shift operation is complicated and the power source needs to be cut off during the shift process, which affects the driving performance and comfort of electric vehicles

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