A multi-power motor for electric vehicles

Abstract

The invention discloses a multi-power motor for an electric vehicle. The multi-power motor for the electric vehicle comprises a cooling fan part, a commutating electric brush part, a stator-rotor part and an air filtering part, wherein the cooling fan part comprises a main shaft, cooling fans and a cooling fan shell; the rectifying electric brush part comprises electromagnets, a commutator, a commutator changeover panel, an electric brush group, top bearings and a commutating electric brush shell; the stator-rotor part comprises a stator-rotor shell, a stator, a coil winding and a rotor; and the air filtering part comprises a tail bearing, an air filter element, an end cover and support upright posts. By the motor, the output power and the mechanical characteristic of the motor can be adjusted according to a working condition change; lifting and falling of electric brushes are controlled through controlling power-on and power-off modes of the electromagnets; the commutator changeover panel is connected to coils with different numbers of turns; the power output and the mechanical characteristic of the motor are changed; and different working modes are achieved to deal with the working condition change.

Description

technical field [0001] The invention relates to the field of motors, in particular to a multi-power motor for electric vehicles. Background technique [0002] At present, the single-power motor is widely used in electric vehicles, that is, only a single power is used for power output without considering the working environment of the electric vehicle. However, electric vehicles have different requirements for the output power of the motor in many working environments. For example, when an electric vehicle is started under high load or complex road conditions, the motor needs to output high power. In other words, it will increase the demand for the battery pack and shorten the mileage of the electric vehicle; moreover, when the speed-up process of the electric vehicle is completed, the motor only needs to output a small power to maintain the movement of the electric vehicle. For a motor that can only output a single power, the excess output power will also shorten the mileag...

AI Technical Summary

Problems solved by technology

[0003] In addition, with the development of the field of electric vehicles, electric vehicles are gradually used in various working environments. Under some relatively harsh working conditions, dust or particles will be absorbed inside the motor due to ventilation or static electricity. The dirt adheres to the rotor, coil, heat sink and fan blades, which will cause the motor to heat up, resulting in an increase in the resistance of the motor coil, which not only consumes extra power, but also may cause the motor to stall, thereby burning the motor; plus Existing motors are all cast at one time, which cannot meet the later upgrade and replacement of parts

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