Electric piston driven electric vehicle suitable for downhill braking

Abstract

The invention relates to an electric piston driven electric vehicle suitable for downhill braking. The electric vehicle comprises an electric piston motor, a flywheel connected with a crankshaft of the electric piston motor, a clutch arranged on the flywheel, a gearbox connected with the output shaft of the clutch, and a vehicle transmission system connected with the output shaft of the gearbox in a transmission manner. The ring gear on the outer edge of the flywheel is meshed with a driving gear of a starting system. The motor comprises a plurality of cylinder bodies, pistons made of permanent magnets in the cylinder bodies, and connecting rods used to connect the pistons with the crankshafts in a transmission manner. The crankshaft is arranged below each cylinder body. The upper end of the cylinder body is provided with an electromagnet which is on the same axis with the cylinder body. The coil of the electromagnet is connected with a coil driving circuit. The coil driving circuit is connected with a CPU unit. The electromagnet is arranged on a turnover mechanism. The upper dead center and the lower dead center of adjacent cylinder bodies are respectively provided with an upper travel switch and a lower travel switch connected with the CPU unit. The bottom of the cylinder body is provided with a Hall sensor connected with the CPU unit.

Description

[0001] This application is a divisional application, the application number of the original application is 201110027288.8, the application date is: January 25, 2011, and the name of the invention is: electric piston-driven electric vehicle suitable for downhill braking. technical field [0002] The invention relates to the technical field of electric vehicles driven by electric piston motors, in particular to an electric piston-driven electric vehicle suitable for downhill braking. Background technique [0003] Chinese patent document CN101860168A discloses an electric motor, which removes the traditional engine air supply, fuel supply, exhaust, and ignition systems, and replaces them with electromagnet components. The piston is embedded with a permanent magnet, and then the current direction of the electromagnet coil is controlled. The piston is controlled to move up and down in the cylinder, and the piston outputs power through the connecting rod and crankshaft mechanism. ...

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the above-mentioned electric piston motor in the prior art is that the magnetic polarity of the electromagnet is changed by frequently switching the direction of current flowing through the electromagnet coil, thereby controlling the direction of the force between the electromagnet and the piston, and then controlling the direction of the piston. However, in the actual implementation process, since the current direction of the electromagnet coil cannot be changed instantaneously, the continuity and stability of the output power or torque of the motor cannot be guaranteed

[0008] In addition, the existing electric vehicles often use motors to directly drive the wheels. Retrofitting existing gasoline and diesel vehicles into electric vehicles directly driven by motors is costly, cumbersome and difficult to implement.

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