Permanent magnet electric device, an electric car and driving, brake and range increasing method thereof

Abstract

The present invention discloses a permanent magnet electric device, an electric car and a driving, brake and range increasing method thereof. The electronic device comprises a power supply modulator, a driving control device, a fixed body and a rotating body. The rotating body is an annular machinery loop with a rotating shaft is provided with at least four permanent magnet rotor units, having the same direction with the magnetic pole, arranged at intervals; the fixed body is a machinery disc with a fixed shaft and at least provided with a stator unit, wherein the periodical relative air gap between the stator unit and the rotor unit is not larger than 30mm; the electric pole direction of the stator unit is opposite to the magnetic pole moving opposite to the rotor unit; the power supply modulator obtains a user instruction and outputs corresponding time sequence current according to the driving control device / an electromagnetic braking device to allow the electric device to realize driving / braking; and the electric car includes a car frame, a battery pack and at least one wheel and is at least provided with a set of the electric device, and a range increasing system is configured to supply electric energy for a secondary battery pack in a setting logic state.

Description

technical field [0001] The invention relates to the field of electric vehicle and its power source power design, in particular to a mechanical design of an electric device, a sequential current design method for driving current and braking, and a range-extending method for the electric vehicle. Background technique [0002] At present, the electric bicycle market is usually equipped with a motor installed on the wheel shaft. The motor is designed as an outer rotor. The outer rotor is mechanically connected to the rim of the wheel through the spokes, and the wheel is rotated by the torque of the motor. The hot spot in the electric vehicle industry is the development of passenger wheel hub motors, also known as wheel built-in motors. Industry experts generally believe that because the weight of the current hub motor components far exceeds the hub body (generally including hub motors, brake discs, brake calipers, and active suspension motors) , suspension, damping spring, etc.)...

AI Technical Summary

Problems solved by technology

PWQ technology is generally used in control. The main problem of this kind of permanent magnet brushless DC motor is the approximation control of sine wave deformation. Although its power supply is modulated by PWQ technology, the control method is limited by the traditional internal motor. design

[0005] Short mileage is the weakness of electric vehicles at this stage. The industry generally believes that before high-energy batteries enter commercial use, it is unrealistic to increase the mileage of electric vehicles by increasing the number of batteries. Therefore, the current mainstream of the automobile market is to develop a dual-source hybrid of oil and electricity. The design concept of the car is: when the car starts or at low speed, the power of the electric motor is used, and when the car reaches a certain speed threshold, it is converted to use the power of the internal combustion engine, thereby reducing the power caused by the incomplete combustion of the internal combustion engine when the car starts or at low speed. Exhaust pollution; its technical basic structure is characterized by: the fuel tank provides fuel output power to the internal combustion engine system; on the basis of this traditional design, a set of electric motor system electrically connected to the battery pack is added in parallel, and the electric motor is provided by the battery pack to provide electric energy output power; two The road power transmits the power of the internal combustion engine or electric motor to the wheel hub through the oil and electric power conversion device sharing the mechanical transmission system. This kind of dual-source power design can be called an oil and electric power parallel system, and its obvious disadvantage is high manufacturing cost.

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