Ventilated cooling rainproof high-speed motor of electric bicycle

Abstract

A ventilating cooling rain-proof high speed motor of an electric bicycle is provided with a motor rotor and a motor stator. The stator is provided with a shell; the shell is connected with an end cover and the connection cover of a gearbox; the motor shaft of the rotor is mounted in the end cover and the connection cover; an output shaft is driven by the motor shaft through a gear shift; the hub of the electric bicycle is driven by the output shaft; a box body is arranged out of the gear shift; the invention is characterized in that an air suction opening is arranged in the connection cover of the gearbox; a fan vane is mounted on the electric shaft; a ventilating hole and an air exhaust channel are arranged in the end cover; the air exhaust channel is provided with an air inlet and an air outlet; the outer side of the end cover is connected with a water and dust-proof hood. The motor can effectively reduce the temperature in a motor chamber and reduce the discharge circuit when the electric bicycle is in operation, thereby improving the working efficiency of the motor so as to prolong the continuous running mileages and lane climbing capacity. The water dust-proof hood is arranged out of the end cover, thus effectively preventing the outside impurities and rain from invading.

Description

technical field [0001] The invention relates to an electric bicycle motor, in particular to a ventilation, cooling and rainproof high-speed electric bicycle motor. Background technique [0002] Electric bicycles are flexible in use and wide in applicability, and can be ridden on streets and alleys and country roads; they don’t need manpower to pedal, and they are fast, labor-saving and time-saving; compared with motorcycles, they consume less energy and have no pollution; and their appearance is more beautiful , especially suitable for women, so it has developed rapidly in recent years. In the overall structure of the electric bicycle, its heart part - the motor plays a leading role in determining the quality of the electric bicycle. The quality of the motor directly affects factors such as the climbing ability and mileage of the electric bicycle. The existing electric vehicles have always been driven by low-speed hubs. The disadvantages are large power consumption, small t...

AI Technical Summary

Problems solved by technology

The existing electric vehicles have always been driven by low-speed hubs. The disadvantages are large power consumption, small torque, and poor climbing ability. Disadvantages of existing low-speed hub drives

However, due to the increase of the winding current and the alternating frequency of the magnetic flux in the core of the high-speed motor, the basic electrical loss increases, and the high-frequency additional loss is also increased, especially the wind friction loss and bearing loss caused by the high-speed rotation of the rotor surface are included in the total loss. It is closely related to the running speed and heat dissipation conditions of the motor

At the same time, due to the increase of power density and loss per unit volume and the reduction of the overall heat dissipation area, and the use of electric bicycles due to bad weather factors (rain and dust), the motor is in a fully enclosed state, which directly leads to large power consumption of the motor. , lower efficiency or even burnout and crash

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