WO2020027557A1

WO2020027557A1 - Method for manufacturing stator and inner rotor of generator

Info

Publication number: WO2020027557A1
Application number: PCT/KR2019/009502
Authority: WO
Inventors: 선상규
Original assignee: 선상규
Priority date: 2018-07-30
Filing date: 2019-07-30
Publication date: 2020-02-06
Also published as: KR20200013404A

Abstract

The present invention relates to a stator and an inner rotor of a generator, which can improve rotational force and significantly reduce vibration and noise by minimizing cogging torque caused by a correspondence in an airgap flux density by a slot of the stator, and distortion of a current. According to the present invention, a tip is formed at an outer end of a coil winding piece of a stator core of the generator, and the inner rotor is formed having a ring structure and a ring structure with a cross-shaped support, and rotates at the same speed as an outer rotor.

Description

Generator stator and inner rotor manufacturing method

The present invention relates to a stator and an inner rotor of a generator, and more particularly, to configure a stator, an inner rotor and an outer rotor to drive in an electric vehicle. The present invention relates to a stator and an inner rotor of a generator, and a method of manufacturing the same.

In general, the magnitude of the electromotive force generated by a generator is proportional to the strength of the magnetic field, the length of the conductor, and the relative speed of the magnetic field and the conductor.

Therefore, the electromotive force can be increased by increasing the strength of the magnetic field or forming a long conductor, or by increasing the relative speed of the magnetic field and the conductor.

Typically, the relative speed of the magnetic field and the conductor is increased to increase the electromotive force. In the case of the conventional generator, when the rotor torque is high by using the magnetic stator and the magnetic rotor, low torque such as electric vehicles, tidal power, wind power, and road power generation is required. The desired electromotive force could not be obtained.

A generator capable of obtaining desired electromotive force using two rotors has been developed. An example of the "generator" of No. 10-1454805 is shown in FIG.

6 is a structure in which electromotive force is obtained at low rotational speed by rotating the rotor 120 having a magnet and the inner casing 150 which is a magnetic body in the same direction, and the rotor 120 having a magnet as an advantage. And magnetic coils are induced between cores of the stator 130 formed of a complex soft material or a nonmagnetic material between the simultaneous rotating bodies called the inner casing 150, which is a magnetic body, and generates electromotive force to the stator 130. At the same time, it eliminates the attraction to attach to each other, suppresses cogging and eddy currents, and greatly reduces heat generation and rotational resistance, thereby increasing power generation efficiency.

The present invention is to supplement such a conventional technology ("generator" of No. 10-1454805), the object of which is the cogging torque (Cogging Torque) caused by the change of the pore flux density by the stator slot of the generator and the distortion of the current By minimizing), the present invention provides a generator stator and an inner rotor for an electric vehicle that are simple to design and manufacture to improve the rotational power of the generator and to significantly reduce vibration and noise.

The present invention relates to a method for manufacturing a stator and an inner rotor of a generator, wherein the stator core is formed in a circular tray shape with a thin side of the core side; Forming a through hole for inserting the shaft at the center of the stator core side portion; The stator core side through hole is formed with a key groove to be coupled to the shaft; The stator core inner edge is molded into a circular coil winding support;

Through-hole molding allows the core outer rim to form a plurality of coil winding pieces and tips depending on the number of slots;

In addition, the inner rotor core has two types of laminated forms, one of which simultaneously forms a ring support and a ring (+) shape inward to support the ring; The other is to form a core having only a ring shape and then all joined by rivets for lamination.

According to an embodiment of the present invention, a strong magnetic field passes through the stator by simultaneously rotating the inner rotor and the outer rotor at the center with the stator having a core formed of a composite soft material or a nonmagnetic material at the center, but the inner inner Eliminates cogging phenomena and eddy currents between inner rotor, stator and outer rotor due to strong magnetic field between rotor and outer outer rotor, and reduces rotational resistance than conventional generators. Since it can increase the desired electromotive force, there is an advantage to save the power energy because the external rotational power is not required large.

1 is a cross-sectional view showing an assembly of a generator of the present invention.

2 is a plan view and a side view of a stator of the present invention;

3 is a plan view and a side view of the inner rotor of the present invention;

4 is a plan view of the inner rotor core coupling of the present invention

5 is a plan view of the shaft of the present invention.

6 is a plan view of a generator according to the related art

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to FIGS. 1 to 6. 1 is a cross-sectional view showing an assembly of an electric generator according to an embodiment of the present invention, and FIG. 2 is a plan view and a side view of a stator according to an embodiment of the present invention.

The stator core 101 has a tray shape, and a stator side portion 102 is formed at one side thereof, and a through hole 103 for inserting the shaft 500 is formed at the center of the stator side portion 102, and the through hole 103 is formed. The through-hole key groove 104 is formed, and the outer surface of the stator core 101 is formed of the coil winding piece support 107, and the plurality of slot through holes 106 are formed according to the number of slots 105. The coil winding piece 108 and the tip 109 are formed.

The coil winding piece 108 and the tip 109 constitute the slot 105 one by one, and are disconnected between the slot 105 and the slot 105 so that the coil 110 enters.

The wound coil 110 is supported by the stator side portion 102 and drawn out through the wire drawing sleeve 400.

Accordingly, one side of the wire drawing sleeve 400 has an edge, and a sleeve through hole 402 for inserting the shaft 500 is formed, and the sleeve through hole 402 is connected to the shaft 500. A sleeve key groove 403 is formed to be coupled, and a wire outlet 401 is hollow-formed in the direction of the shaft 500 between the inner circumferential surface and the outer circumferential surface, and the outer circumferential surface is a bearing for supporting an outer rotor 300 on both sides. 305a and 305b are combined.

3 is a plan view and a side view of the inner rotor according to an embodiment of the present invention.

Inner rotor (200) is a stacked form of two types, inner rotor core a (Inner Rotor Core a: 201a) is a hollow form of the core ring (Core Ling: 202) only through-hole a ( 206a) and the inner rotor core b (Inner Rotor Core b: 201b) is in the shape of the core ring (Core Ling: 202) and the core ring support (203) in the form of a cross (+) is left to support it. The ring support through hole 204 and the through hole b 206b are formed.

In order to couple the inner rotor core a 201a and the inner rotor core b 201b, the inner rotor core a 201b is attached to both sides of the inner rotor core b 201b, and then the rivet 208 is attached thereto. Lay together.

The inner rotor core a 201 a and the inner rotor core b 201 b have a width in proportion to the stator core 101, and an air gap with the stator core 101 is very narrow.

4 is a plan view of the inner rotor core coupling according to an embodiment of the present invention.

The inner rotor core coupling member 250 is composed of a female coupling member 251 and a male coupling member 252.

The female coupling member 251 and the male coupling member 252 are hollow through-holes 256, respectively,

A bearing 253 is deeply inserted into one inner surface of the through hole 256 of the male coupling member 252 so that the shaft 500 is slipped, and a male thread 255 is formed on the other outer peripheral surface thereof. The inner circumferential surface of the female coupling member 252 is formed with a female thread line 254.

Accordingly, the inner rotor core coupling member 250 including the female coupling member 251 and the male coupling member 252 has left and right sides of the coring support through hole 204 with the core ring support 203 interposed therebetween. Join to engage in.

In addition, the outer rotor 300 is formed into a hollow circular housing 301, the inner peripheral surface of the circular housing 301 is provided with a plurality of magnets 302, each side of the circular housing 301 A side support member L 303a and a side support member R 303b are coupled to each other by the side support member coupling screw 304, and the side support member L 303a and the side support member R 303b are bearing a ( 305a and a bearing b 305b are coupled to slip on the shaft 500.

5 is a shaft plan view according to an embodiment of the present invention.

The shaft 500 is fixed to the stator core 101 by molding the through-hole key groove 104 and the sleeve key groove 403 of the wire drawing sleeve 400.

In the above, the stator, the inner rotor, and the manufacturing method of the generator of the present invention have been described with reference to a preferred embodiment of the present invention, but modifications, changes, and modifications can be made without departing from the spirit of the present invention. Various modifications will be possible. Therefore, the protection scope of the present invention should be construed to include all changes, modifications or adjustments.

(Explanation of the sign)

1: assembly of generators

100: stator 101: stator core

102: stator side portion 103: center through hole

104: through-hole keyway 105: slot

106: slot through hole 107: coil winding piece support

108: coil winding 109: Tip 110: coil

200: inner rotor

201a: inner rotor core a 201b: inner rotor core b

202: core ring 203: core ring support

204: core ring support through hole

206a: inner core b through hole 206b: inner core b through hole

208 rivet 209 rivet hole

250: inner rotor core coupling member

251: female coupling member 252: male coupling member

253: bearing 254: female thread 255: male thread

256: through hole

300: outer rotor

301: circular housing 302: magnet

303a: Side support member L 303b: Side support member R

304: side support member coupling screw

305a: bearing a 305b: bearing b

400: wire drawing sleeve 401: wire drawing outlet

402: sleeve through hole 403: sleeve keyway

500: shaft

501: stator engagement keyway 502: sleeve engagement keyway

503: side support member L keyway

Claims

A shaft 500 composed of a fixed shaft;

An inner rotor 200 coupled to slip on an outer circumferential surface of an intermediate point of the shaft 500;

A stator 100 coupled to be fixed to the side of the inner rotor 200 coupled to the shaft 500;

A wire drawing sleeve 400 fixedly coupled to the shaft 500 to derive the coil 110 of the stator 100;

A side support member R 303b coupled to one outer circumferential surface of the wire drawing sleeve 400 by using a bearing 305b;

A side support member L 303a coupled to one side outer circumferential surface of the shaft 500 by using a bearing 305a; And

Stator and inner rotor of the generator, characterized in that the edge of the side support member R (305b) and the side support member L (305a) is formed to have an outer rotor (300) coupled to the side support member coupling screw 304 And a preparation method thereof.
The method of claim 1,

The stator core 101 is formed in the form of a tray on one side of the stator side portion 102; The through hole 103 for inserting the shaft 500 is formed in the center of the stator side portion 102; A through hole key groove 104 is formed in the through hole 103; An outer surface of the stator core 101 is formed of a coil winding piece support 107; Forming a plurality of slot through holes 106 in accordance with the number of slots 105, a plurality of coil winding piece 108 protruding radially at regular intervals and a plurality of tips having a circumferentially formed structure (Tips: 109) Molding);

The coil winding piece 108 and the tip 109 constitute the slot 105 one by one, and are disconnected between the slot 105 and the slot 105 to enter the coil 110; The wound coil 110 is supported by the stator side portion 102 and drawn out through the wire drawing sleeve 400;

One side of the wire drawing sleeve 400 has an edge; The central portion is formed with a sleeve through hole (402) for inserting the shaft (500); The sleeve through hole (402) forms a sleeve keyway (403) for engagement with the shaft (500); Between the inner circumferential surface and the outer circumferential surface, a wire outlet 401 is blow-molded in the direction of the shaft 500; An outer circumferential surface of the generator stator and inner rotor, and a manufacturing method thereof, characterized in that the outer rotor 300 is coupled to the bearing (305a, 305b) on both sides to slip.
The method of claim 1,

The inner rotor (200) is a form in which two types are stacked, and the inner rotor core a (201a) is hollow so that the through hole a (206a) is formed to have only a core ring (Core Ling: 202) shape. and; The inner rotor core b 201b is in the shape of the core ring 202 and has a core ring support 203 having a cross shape therein for supporting it. shaping b 206b;

In order to couple the inner rotor core a 201a and the inner rotor core b 201b, the inner rotor core a 201b is attached to both sides of the inner rotor core b 201b, and then the rivet 208 is attached thereto. Laminated and joined;

The inner rotor core a 201 a and the inner rotor core b 201 b define a predetermined width in proportion to the stator core 101, and an air gap with the stator core 101 is very narrow. A stator and an inner rotor of the generator, and a manufacturing method thereof.
The method of claim 1,

Inner rotor core coupling member 250 is composed of a female coupling member 251 and a male coupling member 252; The female coupling member 251 and the male coupling member 252 are each formed with a hollow through hole 256;

A bearing (253) is deeply inserted into one inner surface of the through hole (256) of the male coupling member (252) so that the shaft (500) is coupled to slip; A male thread line 255 is formed on the other outer circumferential surface, and a female thread line 254 is formed on the inner circumferential surface of the female coupling member 252;

The inner rotor core coupling member 250 including the female coupling member 251 and the male coupling member 252 is disposed at left and right sides of the coring support through hole 204 with the core ring support 203 interposed therebetween. Stator and inner rotor of the generator characterized in that the coupling to engage with and a manufacturing method thereof.
The method of claim 1,

The outer rotor 300 is molded into a hollow circular housing 301; A plurality of magnets 302 are provided on an inner circumferential surface of the circular housing 301; Side surfaces of the circular housing 301 are provided with side support members L 303a and side support members R 303b, respectively, and are coupled to the side support member coupling screws 304; The side support member L 303a and the side support member R 303b are coupled to the shaft 500 by using the bearing a 305a and the bearing b 305b. Stator and inner rotor of the generator and its manufacturing method.
The method of claim 1,

The shaft 500 is a stator of the generator, characterized in that for molding the through-hole key groove 104 of the stator core 101 and the sleeve key groove 403 of the wire drawing sleeve 400 to fix them WINE ROTOR AND MANUFACTURING METHOD THEREOF.