CN111009978A

CN111009978A - Single-phase generator for illumination

Info

Publication number: CN111009978A
Application number: CN201911312991.6A
Authority: CN
Inventors: 王远锋; 石斌; 邬向东
Original assignee: Anhui Evotec Power Generation Co ltd
Current assignee: Anhui Evotec Power Generation Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-04-14

Abstract

The invention discloses a single-phase generator for illumination, which comprises a generator shell, a stator assembly arranged in the generator shell and a rotor assembly moving relative to the stator assembly, wherein the stator assembly comprises a stator core and a plurality of stator coils arranged on the stator core; the invention provides a single-phase generator for illumination, which is light in weight and long in service time for illuminating surfaces of bicycles.

Description

Single-phase generator for illumination

Technical Field

The invention belongs to the field of generators, and particularly relates to a single-phase generator for illumination.

Background

The linear generator is an electromechanical energy conversion device which can directly convert mechanical energy into electric energy to be output, and compared with the traditional rotary generator, the power generation device reduces the intermediate links of energy conversion, has the advantages of simple structure and small mass and volume, and can be widely used for linear power generation systems, such as a free piston power generation system, a direct drive type wave power generation system, an oscillation power generation system and the like.

The linear generator can be divided into a moving coil type and a moving magnet type according to the form of a rotor, wherein the coil moves as the rotor, the linear generator with the permanent magnet fixed is called a moving coil type linear generator, the permanent magnet moves as the rotor, and the linear generator with the coil fixed is called a moving magnet type linear generator. At present, the linear generator can obtain higher power density, but the following defects still exist: the structure is relatively complex, and the processing, the manufacturing and the assembly are not facilitated; the linear generator has high loss, particularly high iron loss, so that the efficiency of the generator is low, and the generating efficiency needs to be further improved.

Along with the low carbon environmental protection theory of people is stronger and stronger, people go on a journey and mostly adopt to ride the bicycle, especially on solving last kilometer problems such as public transit, subway, current sharing bicycle has been widely accepted and used by people, however, all do not have lighting device on current bicycle, it is relatively poor to drive a vehicle the sight at night, on the one hand the cyclist can't see the road surface, on the other hand cars that go etc. also hardly discover the cyclist next to the road surface, just so brought very big danger for bicycle riders. And a plurality of enthusiasts who like to ride the bicycle like riding at night, so that the sight is poor, and great potential safety hazards are brought to riding of the enthusiasts. Without solving the above problems, it is urgently required to install a lighting device for lighting on a bicycle. However, when a battery is mounted, the small battery has a small storage capacity, short service time and heavy weight, and thus a burden is imposed on a rider. The best way is to add a small generator that can generate electricity by the rotation of the bicycle wheel to generate electricity, which solves the above problems.

Disclosure of Invention

The invention aims to provide a single-phase generator for illumination, which is light in weight and long in service time for illuminating surfaces of bicycles.

The invention provides a single-phase generator for illumination, which comprises a generator shell, a stator assembly and a rotor assembly, wherein the stator assembly is arranged in the generator shell, the rotor assembly moves relative to the stator assembly, the stator assembly comprises a stator core and a plurality of stator coils arranged on the stator core, the rotor assembly comprises a moving shaft, a plurality of rotor magnetic poles are uniformly distributed outside the moving shaft, the moving shaft drives the rotor magnetic poles to move relative to the stator coils, and the length of the rotor magnetic poles arranged on the moving shaft is greater than that of the stator core.

Preferably, the stator core is uniformly provided with coil slots, the mouth of each coil slot is provided with a limit shoulder, and the stator coils are arranged in the coil slots on the inner side of the limit shoulders.

Preferably, the length of the generator shell is greater than that of the stator core, two ends of the moving shaft are respectively provided with two ends of the stator core and extend out, one end of the moving shaft extends out of the generator shell, the other end of the moving shaft is provided with a coaxial column hole, a limiting column is sleeved in the coaxial column hole, and the limiting column is fixed with the generator shell.

Preferably, the external fixed cover of moving axis has connect columniform active cell iron yoke, active cell magnetic pole cover sets up the active cell iron yoke outside, is provided with the solid fixed ring of magnetic pole between two adjacent active cell iron yokes, be provided with the clamping ring on the solid fixed ring of magnetic pole foreign side, the active cell magnetic pole is arranged in between the solid fixed ring of two adjacent magnetic poles and is compressed tightly by the clamping ring on the solid fixed ring of two magnetic poles.

Preferably, the center of the stator core coincides with the center of the generator housing, and two ends of the rotor yoke respectively extend out from two ends of the stator core, and the extension length is slightly less than half of the distance from the end part of the stator core to the inner end face of the generator housing.

Preferably, anti-collision rings are respectively sleeved on the moving shafts at the two ends of the rotor iron yoke, and rotor magnetic poles and magnetic pole pressure rings are uniformly distributed on the rotor iron yoke.

The single-phase generator for illumination of the technical scheme of the invention has the beneficial effects that,

1. small, light in weight, the installation of being convenient for installs and provides the illumination for riding passerby on the bicycle that straightly goes up, can not bring weight burden for riding passerby.

2. The solar energy power generation device generates power when being used, does not have the problem of electric energy exhaustion, does not need to consume time for charging, and is convenient and quick.

3. The bicycle lighting device has the advantages that the sight of a rider is improved for bicycle lighting, and safety guarantee is provided for the rider.

Drawings

FIG. 1 is a schematic view of a single-phase generator for illumination according to the present invention,

fig. 2 is an enlarged view of a portion a in fig. 1.

Detailed Description

In order to facilitate the understanding of the technical solutions of the present invention for those skilled in the art, the technical solutions of the present invention will be further described with reference to the drawings attached to the specification.

As shown in fig. 1 and 2, the single-phase generator for illumination according to the present invention includes a generator housing 1, a stator assembly disposed in the generator housing 1, and a mover assembly moving relative to the stator assembly. The stator assembly includes a stator core 4 and a number of stator coils 5 mounted on the stator core 4. The rotor component comprises a moving shaft 6, and a plurality of rotor magnetic poles 8 are uniformly distributed outside the moving shaft 6. The moving shaft 6 drives the rotor magnetic pole 8 to move relative to the stator coil 5. The length of a rotor magnetic pole 8 arranged on the moving shaft 4 is larger than that of the stator iron core 4. The moving shaft 6 drives the rotor magnetic pole 8 to move relative to the stator coil 5, so that the rotor magnetic pole 8 and the stator coil 5 move relatively to realize power generation. And the length of the rotor magnetic pole 8 arranged on the moving shaft 4 is larger than that of the stator iron core 4, so that the generator can generate electricity at each moment when the moving shaft 4 moves, the moving shaft 6 cannot move in a no-load manner, and the generating efficiency is effectively improved.

As shown in fig. 1 and 2, in the technical solution of the present invention, the stator core 4 is uniformly provided with coil slots, and the mouth of the coil slot is provided with a limit shoulder 12. The stator coil 5 is placed in the coil groove inside the limit shoulder 12. The fixing of the stator coil 5 is realized by the limiting shoulder 12, and the problem that the stator coil shakes when the engine works or moves along with the bicycle is avoided.

As shown in fig. 1 and 2, in the technical scheme of the invention, the length of a generator housing 1 is greater than that of a stator core 4, two ends of a moving shaft 6 are respectively provided with two ends of the stator core 4 to extend out, one end of the moving shaft extends out of the generator housing 1, the other end of the moving shaft 6 is provided with a coaxial column hole, a limiting column 2 is sleeved in the coaxial column hole, and the limiting column 2 is fixed with the generator housing 1. The limiting column 2 realizes the guiding and lateral supporting of the moving shaft 6. The moving shaft 6 extends out of the generator shell 1, is connected with or provided with a driving mechanism and is used for driving the moving shaft 6 to reciprocate.

As shown in fig. 1 and 2, in the technical solution of the present invention, a cylindrical mover iron yoke 7 is fixedly sleeved outside a moving shaft 6, and a mover magnetic pole 8 is sleeved outside the mover iron yoke 7. A magnetic pole fixing ring 10 is arranged between two adjacent rotor iron yokes 8, and a pressing ring 11 is arranged on the peripheral surface of the magnetic pole fixing ring 10. The rotor magnetic pole 8 is arranged between two adjacent magnetic pole fixing rings 10 and is pressed by the pressing rings 11 on the two magnetic pole fixing rings 10. The magnetic pole fixing ring 10 and the pressure ring 11 are used for fixing and installing the rotor magnetic pole 8, and the rotor magnetic pole 8 is prevented from loosening in the working process of the generator.

As shown in fig. 1 and 2, in the technical solution of the present invention, the center of the stator core 4 coincides with the center of the generator housing 1, and two ends of the rotor yoke 7 respectively extend from two ends of the stator core 4, and the extending length is slightly less than half of the distance from the end of the stator core 4 to the inner end surface of the generator housing 1. This distance is set so that the moving shaft has a sufficient distance in the reciprocating movement to allow the moving shaft 6 to generate power at every instant of movement.

As shown in fig. 1 and 2, in the technical solution of the present invention,

anti-collision rings

3 and 9 are respectively sleeved on the moving shafts 6 at both ends of the mover iron yoke 7. The rotor iron yoke 7 is fully distributed with rotor magnetic poles 8 and magnetic pole pressure rings 10. The

anti-collision rings

3 and 9 effectively avoid the collision of the moving shaft with the generator shell 1 in the moving process.

Technical solution of the invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive method concept and technical solution, or to apply the inventive concept and technical solution to other occasions without modification.

Claims

1. The single-phase generator for illumination is characterized by comprising a generator shell, a stator assembly and a rotor assembly, wherein the stator assembly is arranged in the generator shell, the rotor assembly moves relative to the stator assembly, the stator assembly comprises a stator core and a plurality of stator coils arranged on the stator core, the rotor assembly comprises a moving shaft, a plurality of rotor magnetic poles are uniformly distributed outside the moving shaft, the moving shaft drives the rotor magnetic poles to move relative to the stator coils, and the length of the rotor magnetic poles arranged on the moving shaft is greater than that of the stator core.

2. The single-phase generator for illumination as claimed in claim 1, wherein the stator core is uniformly provided with coil slots, the mouth parts of the coil slots are provided with limit shoulders, and the stator coils are arranged in the coil slots inside the limit shoulders.

3. The single-phase generator for illumination as claimed in claim 1, wherein the generator housing has a length greater than that of the stator core, two ends of the moving shaft respectively extend from the two ends of the stator core, one end of the moving shaft extends from the generator housing, the other end of the moving shaft is provided with a coaxial post hole, a limiting post is sleeved in the coaxial post hole, and the limiting post is fixed with the generator housing.

4. The single-phase generator for illumination according to claim 1, wherein a cylindrical rotor iron yoke is fixedly sleeved outside the movable shaft, the rotor magnetic pole sleeve is arranged outside the rotor iron yoke, a magnetic pole fixing ring is arranged between two adjacent rotor iron yokes, a pressing ring is arranged on the outer circumferential surface of the magnetic pole fixing ring, and the rotor magnetic pole is arranged between two adjacent magnetic pole fixing rings and is pressed by the pressing rings on the two magnetic pole fixing rings.

5. The single-phase generator as claimed in claim 4, wherein the center of the stator core coincides with the center of the generator housing, and the two ends of the rotor yoke respectively extend from the two ends of the stator core by a length slightly less than half of the distance from the end of the stator core to the inner end surface of the generator housing.

6. The single-phase generator for illumination as claimed in claim 4, wherein anti-collision rings are respectively sleeved on the movable shafts at two ends of the rotor iron yoke, and the rotor iron yoke is fully provided with rotor magnetic poles and magnetic pole compression rings.