CN217010450U

CN217010450U - Dual-power generator structure of small internal combustion engine

Info

Publication number: CN217010450U
Application number: CN202123378597.8U
Authority: CN
Inventors: 卿明树; 唐勇
Original assignee: Lifan Technology Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-19
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a dual-power generator structure of a small internal combustion engine, which comprises a stator assembly and a rotor assembly; the stator assembly comprises a stator core, and the stator core is provided with a plurality of tooth poles which are uniformly distributed around one circumference of the stator core; the rotor assembly comprises a rotor shell, and a magnetic pole piece is arranged on the inner side of the rotor shell and corresponds to each tooth pole; a first coil group and a second coil group are wound on the stator iron core, wherein the first coil group comprises a plurality of first coils wound on adjacent tooth stages to form a first output pole; the second coil group comprises a plurality of second coils wound on the rest of the tooth stages to form a second output pole. The utility model can output different voltages or powers simultaneously, meet the requirements of various electric equipment or loads, does not need to add any additional device, has unchanged installation structure, is convenient to directly replace a magneto on the original engine, and has simple structure and low upgrading and replacing cost.

Description

Dual-power generator structure of small internal combustion engine

Technical Field

The utility model relates to the technical field of generator structures, in particular to a dual-power generator structure of a small internal combustion engine.

Background

The present motorcycles, particularly the three-wheeled freight or passenger motorcycles, have been developed into multifunctional and multipurpose vehicles, such as cold chain transportation, air-conditioning locomotives and the like; due to the limitation of the structural space of the motorcycle, electric energy driving devices are mostly adopted, the voltage/power grade of the electric equipment is mostly about 48V/60V/72V/500-1500W, and the engine is required to output higher voltage and higher electric power so as to meet the requirement of ensuring the normal work of the electric power equipment in the running and transportation process of the locomotive. The conventional method adopted at present comprises the following steps:

the first method comprises the following steps: besides the driving power of the motorcycle engine, an additional range-extending generator is needed to be added, and the use of electric equipment is met in a mode of independently outputting electric power; this increases the cost of the locomotive and occupies the space of the locomotive body.

The second mode: the magneto system of the existing engine is modified to output voltages of 48V/60V/72V and the like, but the power generation output power is not high due to the structural limitation of the original magneto, generally only about 200 plus 300W, and a 12V grade power supply cannot be simultaneously provided to meet the requirements of the locomotive on the use of a 12V grade electric load device (such as a starting motor, an instrument display, a lighting lamp, a steering lamp, a horn and a battery), and the 12V grade load can be used only through DC-DC conversion, so that the use requirements cannot be met, and the cost is increased.

Disclosure of Invention

Aiming at the defects in the prior art, the technical problems to be solved by the utility model are as follows: the utility model provides a can export the magneto structure of different voltages simultaneously, satisfies multiple consumer or load needs, need not increase any extra device, and mounting structure is unchangeable simultaneously, is convenient for directly replace the magneto on the former engine, simple structure, and the small-size internal-combustion engine dual supply generator structure that the replacement cost is low is upgraded.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a small-sized internal combustion engine dual-power generator structure comprises a stator assembly and a rotor assembly; the stator assembly comprises a stator core, and the stator core is provided with a plurality of tooth poles which are uniformly distributed around one circumference of the stator core; the rotor assembly comprises a rotor shell, and a magnetic pole piece is arranged on the inner side of the rotor shell and corresponds to each tooth pole;

a first coil group and a second coil group are wound on the stator core, wherein the first coil group comprises a plurality of first coils wound on adjacent tooth stages to form a first output pole; the second coil group comprises a plurality of second coils wound on the rest of the tooth stages to form a second output pole.

And optimally, the number of the tooth poles corresponding to the first output pole and the second output pole is a multiple of 3.

Preferably, the stator core comprises a plurality of core plates which are arranged coaxially and are mutually attached together, and the teeth are distributed along the outer circumferential surface of the core plates and arranged along the radial direction of the core plates.

Preferably, the rotor shell is of a cylinder structure, and the magnetic pole pieces are arranged on the inner wall of the rotor shell.

Preferably, the magnetic pole pieces comprise N-pole magnetic pole pieces and S-pole magnetic pole pieces, and are alternately arranged along the circumferential direction of the inner wall of the rotor shell.

Preferably, the magnetic pole pieces are permanent magnets.

Compared with the prior art, the utility model has the beneficial effects that:

1. two groups of coil windings are provided on the same iron core to form a dual-voltage or dual-power output power supply, the simultaneous use of low-voltage and high-voltage loads of a locomotive is met after voltage rectification regulation, and a storage battery is charged at the same time. Compared with the existing additionally added range-extended generator locomotive, the electric power requirement can be met, the cost of the locomotive is greatly reduced, the structures of a crankshaft, a box body, a left cover and the like of the existing internal combustion engine do not need to be changed, the original magneto part of the existing internal combustion engine is replaced without damage, and the structure is simple and reliable.

2. Different voltage, power or current demands that adaptation that can be better are further increased through the different setting mode of first coil group and second coil group.

Drawings

FIG. 1 is a schematic front view of a stator assembly according to the present invention;

FIG. 2 is a side view cross-sectional structure of FIG. 1;

FIG. 3 is a schematic view of a rotor assembly according to the present invention;

in the figure, 1 stator core, 2 teeth poles, 301 first coil, 302 second coil, 4 rotor shell, 5 pole pieces.

Detailed Description

The utility model is further illustrated with reference to the following figures and examples.

Example (b):

as shown in fig. 1-3, a dual power generator structure for a small internal combustion engine comprises a stator assembly and a rotor assembly; the stator assembly comprises a stator core 1, wherein the stator core 1 is provided with a plurality of tooth poles 2 which are uniformly distributed around one circumference of the stator core. The stator core 1 comprises a plurality of core plates which are arranged coaxially with the axis and are mutually attached together, and the gear poles 2 are distributed along the outer circumferential surface of each core plate and are arranged along the radial direction of each core plate. The rotor assembly comprises a rotor shell 4, and a magnetic pole piece 5 is arranged on the inner side of the rotor shell 4 and corresponds to each gear pole 2. The rotor shell 4 is of a cylinder structure, and the magnetic pole pieces 5 are arranged on the inner wall of the rotor shell 4. The magnetic pole pieces 5 comprise N-pole magnetic pole pieces 5 and S-pole magnetic pole pieces 5, and are alternately arranged along the circumferential direction of the inner wall of the rotor shell 4. The magnetic pole piece 5 is a permanent magnet.

A first coil 301 group and a second coil 302 group are wound on the stator core 1, wherein the first coil 301 group comprises a plurality of first coils 301 wound on adjacent tooth levels to form a first output pole; the second coil 302 group includes a plurality of second coils 302 wound around the remaining tooth stages, forming a second output pole. In this embodiment, the magneto is a three-phase motor, and the first output pole and the second output pole both have 3 output connection terminals to output different voltages or powers. And in actual processing, the number of the tooth poles 2 corresponding to the first output pole and the second output pole is a multiple of 3.

Specifically, fig. 1 shows a stator assembly, which is formed by laminating, riveting and integrally injection-molding core plates with 97 (90-120) outer diameter, 32 (30-40) inner diameter, 0.3 (0.2-0.5) thickness and 23 (20-30) lamination height, which are high in magnetic conductivity and low in loss, to form a stator core 1 as a coil support; the stator core 1 structure adopts 12/18 tooth poles 2 (coil poles).

In fig. 1, teeth 1 to 9 (18 teeth 2: 1 to 12 teeth) in the tooth 2 are wound to form a first output pole of a high voltage class (48/60/72V) by the first coil 301, and a second output pole of a low voltage class (12V) by the second coil 302 in teeth 10 to 12 (18 teeth 2: 13 to 18 teeth).

FIG. 2 shows a rotor assembly, which is formed by drawing and punching a Q235 material into a cylindrical rotor housing 4 structure with an outer diameter of 112 (100- & ltSUB & gt 130) ], an inner diameter of 99 (92- & ltSUB & gt 122) ], and a thickness of 3.5 (3- & ltSUB & gt 5) ], wherein the inner wall of the rotor housing 4 is respectively adhered with 12-18 pole pieces 5 with extremely high remanence and high coercivity to provide a rotating magnetic field.

The utility model can simultaneously provide output collocation of multiple double power supply grades of 12V/48V, 12V/60V/, 12V/72V by designing a magnetor structure with small volume, high voltage, high power and double power supplies, and the generated power reaches 800-1500W. The electromagnetic motor can not only meet the use requirement of 48V/60V/72V/high-power equipment, but also meet the use requirement of 12V-grade electric loads of a locomotive, does not need to add any additional device, has unchanged mounting structure and directly replaces a magneto on the original engine; the requirements of multiple voltages, high power and small volume are really realized.

Compare with the magneto that utilizes current engine reform transform into 48V 60/72V's single power supply mode, the utility model scheme power is greater than the generating power of current magneto far away, the current magneto power after the transformation is low and can not provide 12V grade power and satisfy the locomotive and use 12V grade power load commonly used, need pass through DC-DC conversion, because the power generation output is little, can only satisfy partial 12V grade load and use, can cause the long-term insufficient electricity of locomotive battery, this kind of mode has both satisfied the operation requirement, and the cost has been increased again.

In the utility model, the raw materials are mixed,

1. the coils of the two groups of power supplies are arranged on the same stator core structure, the structure is simple and compact, the magnetic energy product of the magnetic pole of the magneto rotor is fully utilized, and the power generation efficiency is improved.

2. The number of coils and the number of magnetic poles are 1: 1, structure (b).

3. The dual-power magnetor is designed according to the combustion characteristics of different internal combustion engines and has wide application range.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and although the present invention has been described in detail by referring to the preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention can be made without departing from the spirit and scope of the technical solutions, and all the modifications and equivalent substitutions should be covered by the claims of the present invention.

Claims

1. A small-sized internal combustion engine dual-power generator structure comprises a stator assembly and a rotor assembly; the stator assembly comprises a stator core, and the stator core is provided with a plurality of tooth poles which are uniformly distributed around one circumference of the stator core; the rotor assembly comprises a rotor shell, and a magnetic pole piece is arranged on the inner side of the rotor shell and corresponds to each tooth pole;

the motor is characterized in that a first coil group and a second coil group are wound on a stator core, wherein the first coil group comprises a plurality of first coils wound on adjacent tooth levels to form a first output pole; the second coil group comprises a plurality of second coils wound on the rest of the tooth stages to form a second output pole.

2. The dual-power generator structure of the small internal combustion engine as claimed in claim 1, wherein the number of the corresponding tooth poles of the first output pole and the second output pole is a multiple of 3.

3. The dual-power generator structure of a small internal combustion engine as claimed in claim 2, wherein the stator core includes a plurality of core plates coaxially disposed and attached to each other, and the teeth are distributed along the outer circumferential surface of the core plates and radially disposed along the core plates.

4. The dual-power generator structure of a small internal combustion engine as claimed in claim 1, wherein the rotor housing is a cylindrical structure, and the magnetic pole pieces are disposed on the inner wall of the rotor housing.

5. The dual-power generator structure of the small internal combustion engine according to claim 4, wherein the magnetic pole pieces comprise N-pole magnetic pole pieces and S-pole magnetic pole pieces, and are arranged alternately along the circumferential direction of the inner wall of the rotor shell.

6. The dual-power generator structure of the small internal combustion engine as claimed in claim 1, wherein the magnetic pole pieces are permanent magnets.