WO2012162974A1

WO2012162974A1 - Electric car outer rotor generator

Info

Publication number: WO2012162974A1
Application number: PCT/CN2011/079378
Authority: WO
Inventors: 邱刚义; 黄美如; 邱阳; 田琼
Original assignee: Qiu Gangyi; Huang Meiru; Qiu Yang; Tian Qiong
Priority date: 2011-06-01
Filing date: 2011-09-06
Publication date: 2012-12-06
Also published as: CN102810960A

Abstract

An electric car outer rotor generator (10) disposed on a driven wheel of an electric car. The outer rotor generator (10) comprises an inner stator (11) and an outer rotor (12). The inner stator is fixedly connected to a driven shaft (20) of the electric car. The outer rotor is connected to the driven shaft of the electric car in a rotatable manner, and is sleeved over the inner stator. Multiple sets of winding coils (31) are disposed around the inner stator. An inner wall of the outer rotor is further provided with multiple permanent magnets (32) evenly arranged at a preset interval. When the outer rotor rotates relative to the inner stator, magnetic induction line cutting movement is incurred between the winding coils and the permanent magnets. The electric car outer rotor generator has a simple structure, and can make effective use of the kinetic energy from the fast rotation of the driven wheel of a running car to generate electricity, so as to reasonably convert the mechanical energy into the electrical energy.

Description

Electric car outer rotor generator

Technical field

The present invention relates to an outer rotor generator, and more particularly to an outer rotor generator that utilizes a driven wheel of an electric car to generate electricity. Background technique

It is known that during the running of a car, the engine outputs power, and after being converted by the shifting system, it is transmitted to the driving wheels, so that the driving force can be generated for the car. Under the driving force of the driving wheel, the driven wheel of the automobile is also pulled and rotated. However, since the automobile is in operation, the automobile instrument, the lighting, and other auxiliary electrical appliances need to consume electric energy, and only rely on the automobile. The battery is used for power supply, the power consumption is large, and the energy utilization rate is not ideal. Considering that the driven wheel has a large rotating speed when the car is running, the driven wheel only idling at a high speed, and the utilization rate of the kinetic energy is low, thereby causing a certain amount of mechanical energy waste. Therefore, it is an urgent need to consider and solve the problem that the kinetic energy of the high-speed rotation of the driven wheel of the automobile is used to generate electricity, and the kinetic energy is converted into electric energy to generate auxiliary electric energy for use by a part of the automobile electric appliance. Summary of the invention

The technical problem to be solved by the present invention is to provide an electric car outer rotor generator, which can effectively utilize the high-speed rotation of the driven wheel when the vehicle is running to generate electricity, and reasonably convert the mechanical energy into electric energy, and the structure is single and scientific and environmentally friendly. High life.

To achieve the above object, the present invention provides an electric car outer rotor generator disposed on a driven wheel of the electric car, the outer rotor generator including: an inner stator fixedly coupled to the electric car And an outer rotor rotatably coupled to the driven axle of the electric car and sleeved on the outer portion of the inner stator; wherein the outer stator of the inner stator is further provided with multiple sets of windings a coil, the inner cylinder wall of the outer rotor is further provided with a plurality of permanent magnets uniformly distributed at a predetermined interval, and when the outer rotor rotates relative to the inner stator, the winding turns and the permanent magnet are generated Cutting the magnetic line motion.

Further, the outer rotor further includes: an outer rotor body connected by the first outer rotor bearing To the driven axle and to the outside of the inner stator; and an outer rotor cover connected to the driven axle by a second outer rotor bearing and located inside the inner stator; The outer rotor body and the outer rotor cover are in a snap-fit connection.

Further, an outer side of the first outer rotor bearing and/or the second outer rotor bearing is further provided with an oil seal.

Further, the outer circumference of the outer rotor body is detachably coupled to the hub by a wheel coupling screw, and the wheel hub is sleeved with a tire.

Further, the outer rotor generator further includes an electric disc brake disposed on the driven axle for braking the outer rotor.

According to the outer rotor generator of the present invention, the kinetic energy of the driven wheel during driving of the automobile can be effectively utilized to generate electricity, the mechanical energy can be reasonably converted into electric energy, and the auxiliary electric energy can be further provided to the automobile, thereby avoiding the waste of kinetic energy and the structural unit. Scientific and environmentally friendly, it has a wide range of practicalities. At the same time, since the outer rotor and the hub are detachably connected, the outer rotor generator of the present invention is easily disassembled, the maintenance process is finished, and the service life is effectively extended, which is economical.

DRAWINGS

The invention will be described in detail below with reference to the drawings and specific embodiments. among them:

1 is a schematic structural view of an electric car outer rotor generator of the present invention;

2 is an exploded perspective view of an electric car outer rotor generator of the present invention;

3 is a side view of the outer rotor body of the electric car outer rotor generator of the present invention. Preferred embodiment of the invention

Hereinafter, the present invention will be specifically described by way of exemplary embodiments. However, it is to be understood that the elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

Referring to Figure 1, there is shown an electric car outer rotor generator 10 according to the present invention, disposed on a driven wheel of the electric car, wherein the outer rotor generator 10 includes: an inner stator 11, a fixed connection On the driven axle 20 of the electric car; and the outer rotor 12, rotatably connected The driven axle 20 of the electric car is sleeved on the outside of the inner stator 11. The inner stator 11 further includes a plurality of sets of winding turns 31, and the plurality of sets of winding turns 31 are disposed on the outer peripheral portion of the inner stator 11; the outer rotor 12 is further provided with a plurality of permanent magnets 32. The plurality of permanent magnets 32 are evenly distributed on the inner cylinder wall of the outer rotor 12 at predetermined intervals as a rotating magnetic field. When the outer rotor 12 rotates relative to the inner stator 11, a magnetic flux line motion is generated between the winding turns 31 and the permanent magnets 32, thereby generating electrical energy according to the principle of electromagnetic induction. It should be understood that the number of the above permanent magnets and winding turns is not unique, and a suitable number of permanent magnets and winding turns can be set according to different requirements of the actual output electrical energy.

As shown in FIG. 2, in order to facilitate fabrication and installation, the outer rotor 12 further includes: an outer rotor body 121 connected to the driven axle 20 via a first outer rotor bearing 41 and located at the inner stator The outer rotor cover 122 is coupled to the driven axle 20 via a second outer rotor bearing 42 and is located inside the inner stator. Optionally, a snap-fit connection is made between the outer rotor body 121 and the outer rotor cover 122 to ensure the reliability and stability of the connection relationship between the outer rotor body 121 and the outer rotor cover 122. Due to the action of the first outer rotor bearing 41 and the second outer rotor bearing 42, the rotation of the outer rotor 12 can be ensured to be smooth, natural, safe and reliable.

At the same time, the outer side of the first outer rotor shaft 741 and the second outer rotor shaft 7 42 are respectively provided with an oil seal 43 to prevent leakage of lubricating oil and prevent dust from entering the inner part of the bearing to ensure The normal operation of the outer rotor generator.

It is worth noting that the outer portion of the outer rotor body 121 can be detachably coupled to the hub 45 by a fastener, such as a wheel coupling screw 44, on which the tire 46 is sleeved. Since the inner stator 11 is provided with a plurality of sets of winding turns 31, the outer rotor 12 is provided with a plurality of permanent magnets 32. When the outer rotor 12 follows the driven wheel tire 46 to rotate on the ground, the inner stator 11 is opposite to the outer rotor 12. The magnetic line motion is cut to generate electrical energy, and the electrical energy is stored in a corresponding electrical storage device for use as auxiliary electrical energy for automotive instrumentation, illumination, and other accessory electrical appliances.

Since the outer rotor 12 of the present invention and the hub 45 are detachably connected, when the tire

When the wear occurs, only the wheel coupling screw 44 is removed, the wheel 45 is replaced with the worn tire 46, and the new hub and the tire are replaced, thereby effectively overcoming the existing outer rotor generator due to the outer rotor and The hub is a one-piece structure. When the hub or tire wears, it will cause defects in the entire generator to be scrapped. Therefore, the maintenance of the outer rotor generator of the present invention is convenient and more convenient. Plus save economic costs.

In order to easily control the rotation of the outer rotor 12, the outer rotor generator further includes an electric disc brake 47 disposed on the driven axle 20 and located inside the driven wheel for when required The outer rotor 12 is moved to stop rotation.

In summary, the outer rotor generator according to the present invention can be disposed on the two driven wheels of the automobile, so that it can effectively utilize the kinetic energy of the high-speed rotation of the driven wheel when the vehicle is running, reasonably The mechanical energy is converted into electric energy, and the auxiliary electric energy of the auxiliary electric appliance of the automobile is further provided, thereby avoiding the waste of kinetic energy. The structure of the invention is simple, scientific and environmentally friendly, and can be applied to various power vehicles, so it has wide practicality. On the other hand, since the outer rotor and the hub are detachably connected, when the tire wears, the new wheel hub and the tire are replaced by disassembling the wheel coupling screw, so that the outer rotor generator of the present invention is easy to assemble and disassemble, and the maintenance process is obtained. It is tubular and effectively extends its service life and is economical.

It is to be understood that the present invention is described by the embodiment of the invention, and various modifications and equivalents may be made to these features and embodiments without departing from the spirit and scope of the invention. In addition, these features and embodiments may be modified to adapt to the specific circumstances and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all the embodiments falling within the scope of the claims of the present invention fall within the scope of the invention.

Claims

Claim

An electric car outer rotor generator disposed on a driven wheel of the electric car, wherein the outer rotor generator comprises:

An inner stator fixedly coupled to the driven axle of the electric car;

An outer rotor rotatably coupled to the driven axle of the electric car and sleeved outside the inner stator;

Wherein, the outer circumference of the inner stator is further provided with a plurality of sets of winding turns, and the inner cylinder wall of the outer rotor is further provided with a plurality of permanent magnets uniformly distributed at predetermined intervals, when the outer rotor is opposite to the The internal stator rotates, and a cutting magnetic line motion is generated between the winding turns and the permanent magnet.

2. The electric car outer rotor generator according to claim 1, wherein the outer rotor further comprises:

An outer rotor body coupled to the driven axle by a first outer rotor bearing and located outside the inner stator;

An outer rotor cover is coupled to the driven axle by a second outer rotor bearing and located inside the inner stator;

Wherein, the outer rotor body and the outer rotor cover are engaged with each other.

The electric car outer rotor generator according to claim 2, wherein an outer side of the first outer rotor bearing and/or the second outer rotor bearing is further provided with an oil seal.

The electric car outer rotor generator according to claim 2, wherein the outer portion of the outer rotor body is detachably coupled to the hub via a wheel coupling screw, and the wheel hub is provided with a tire.

5. The electric car outer rotor generator according to claim 1, wherein the outer rotor generator further comprises an electric disc brake disposed on the driven axle for braking the outer Rotor.