CN108696005B

CN108696005B - Sectional iron core and disc type motor

Info

Publication number: CN108696005B
Application number: CN201811008331.4A
Authority: CN
Inventors: 汤磊; 陈坤林
Original assignee: Zhejiang PanGood Power Technology Co Ltd
Current assignee: Zhejiang PanGood Power Technology Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2020-12-15
Anticipated expiration: 2038-08-31
Also published as: CN108696005A

Abstract

The invention discloses a segmented iron core and a disc type motor, wherein the segmented iron core is formed by coating an SMC iron core on the peripheral surface of a laminated iron core, the appearance which is difficult to process is formed by processing the SMC iron core which is easy to form, and the laminated iron core has a relatively single integral structure, so that the specification of a die for processing the laminated iron core is less, the die is easy to process, and the processing difficulty of the segmented iron core is reduced. And the electromagnetic performance of the segmented iron core is higher than that of a laminated iron core which is only used by SMC materials, and the utilization rate of the iron core is higher than that of the laminated iron core which is only used.

Description

Sectional iron core and disc type motor

Technical Field

The invention relates to the technical field of motors, in particular to a segmented iron core and a disc type motor.

Background

A disc type iron core of the disc type motor is divided into an integral iron core and a segmented iron core. For most of the disc motor structures with a single middle stator, the disc iron core adopts a segmented iron core.

At present, the segmented iron core is generally formed by stacking a plurality of silicon steel sheets with different section sizes or by an SMC (sheet molding compound) integral forming method. The silicon steel sheets with different cross section sizes are laminated, and a plurality of specifications of silicon steel sheet types lead to the need of a plurality of specifications of dies, thereby increasing the process difficulty; although the SMC is easy to form by adopting an SMC integral forming method, the SMC material has poor electromagnetic performance, low magnetic permeability and large loss.

Therefore, how to improve the electromagnetic performance based on the reduction of the manufacturing difficulty of the segmented iron core becomes a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

In view of this, the present invention provides a segmented core and a disc motor, and aims to solve the technical problem of how to improve the electromagnetic performance on the basis of reducing the manufacturing difficulty of the segmented core.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a segmentation iron core, includes the SMC iron core of lamination iron core and winding coil, the SMC iron core cladding is in lamination iron core's outer peripheral face.

Preferably, in the above segmented core, the SMC core includes an SMC bar having an outer peripheral surface for providing a coil and an SMC insertion groove provided in the SMC bar, the SMC insertion groove fitting the laminated core.

Preferably, in the above segmented core, one end face of the SMC bar is provided with a first SMC pole shoe.

Preferably, in the above segmented core, an end face of the SMC bar opposite to where the first SMC pole is located is provided with a second SMC pole.

Preferably, in the segment core, the SMC inner caulking groove has a rectangular structure.

Preferably, in the above segmented core, the SMC embedding slot is provided with a plurality of steps.

Preferably, in the segmented core, the laminated core is formed by laminating a plurality of laminated sheets, and the laminated sheets are silicon steel sheets, amorphous alloy sheets, permalloy sheets or iron-cobalt alloy sheets.

Preferably, in the segmented core, the laminated core is formed by laminating the same-size laminated sheets.

Preferably, in the segmented core, the laminated core is formed by laminating a plurality of segments of gradually reduced-size laminations.

The invention also discloses a disc motor which comprises the segmented iron core.

According to the technical scheme, the segmented iron core is coated on the outer peripheral surface of the laminated iron core by the SMC iron core, the appearance which is difficult to process is formed by processing the SMC iron core which is easy to form, and the laminated iron core is relatively single in overall structure, so that the specification of a die for processing the laminated iron core is small, the die is easy to process, and the processing difficulty of the segmented iron core is reduced. And the electromagnetic performance of the segmented iron core is higher than that of a laminated iron core which is only used by SMC materials, and the utilization rate of the iron core is higher than that of the laminated iron core which is only used.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a disc motor according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of an SMC core structure according to an embodiment of the present invention;

fig. 3 is an exploded view of a segmented core according to an embodiment of the present invention;

fig. 4 is an exploded view of another segmented core according to an embodiment of the present invention.

Wherein 100 is SMC iron core, 200 is laminated iron core, 300 is coil, 101 is SMC bar, 102 is SMC embedded groove, 103 is first SMC pole shoe, 104 is second SMC pole shoe, 1021 is step part.

Detailed Description

Disc motor: a disc motor is also called an axial field motor, and the direction of the magnetic field inside the motor is along the axial direction. Axial field motors are also known as disc motors because they are generally flat.

SMC: the soft magnetic composite material is a magnetic conductive iron core formed by pressing iron powder coated by a special insulating material, and can be manufactured into a flexible shape according to actual requirements.

Therefore, the core of the invention is to provide the segmented iron core and the disc type motor so as to improve the electromagnetic performance on the basis of reducing the manufacturing difficulty of the segmented iron core.

The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.

Referring to fig. 1 to 4, the segmented core according to the embodiment of the present invention includes an SMC core 100 wound with a coil 300 and a laminated core 200, wherein the SMC core 100 is wrapped around an outer circumferential surface of the laminated core 200.

The segmented iron core is formed by coating the SMC iron core 100 on the peripheral surface of the laminated iron core 200, the appearance which is difficult to process is formed by processing the SMC iron core 100 which is easy to form, and the laminated iron core 200 has a relatively single integral structure, so that the die specification for processing the laminated iron core 200 is less, the die is easy to process, and the processing difficulty of the segmented iron core is reduced. And the electromagnetic performance of the segmented iron core is higher than that of the laminated iron core 200 which is only used by SMC materials, and the utilization rate of the iron core is higher than that of the laminated iron core which is only used by the laminated iron core 200.

In the embodiment of the present invention, the SMC core 100 covers the outer peripheral surface of the laminated core 200, and both ends of the laminated core 200 are not covered. The SMC core 100 covers the entire outer circumferential surface or a part of the outer circumferential surface of the laminated core 200, wherein when the part of the outer circumferential surface is covered, a part of the laminated core 200 is exposed, and a part of the laminated core 200 may be concentrated to be exposed, or both ends of the laminated core may have parts exposed.

The SMC core 100 includes an SMC bar 101 and an SMC embedding groove 102 provided in the SMC bar 101, wherein an outer peripheral surface of the SMC bar 101 is used to provide the coil 300, and the SMC embedding groove 102 mounts the laminated core 200. In order to ensure the overall electromagnetic performance, the shape of the SMC embedded groove 102 in the embodiment of the present invention conforms to the shape of the outer peripheral surface of the laminated core 200, for example, the SMC embedded groove 102 has a rectangular structure; alternatively, the SMC internally fitting groove 102 is provided with a plurality of stepped portions 1021.

In order to optimize the solution described above, one end face of the SMC bar 101 is provided with a first SMC pole piece 103. Further, the end face of the SMC-bar 101 opposite to where the first SMC-pole piece 103 is located is provided with a second SMC-pole piece 104.

The laminated core 200 is formed by laminating a plurality of laminated sheets, and the laminated sheets are silicon steel sheets, amorphous alloy sheets, permalloy sheets or iron-cobalt alloy sheets. The laminated core 200 of the embodiment of the present invention has a simple structure, for example, in order to facilitate the processing of a rectangular structure, the laminated core 200 having a rectangular structure can be formed by the same size of laminated core during the lamination process.

In addition, in order to further improve the electromagnetic performance of the whole segmented core, the laminated core 200 may be formed by laminating a plurality of segments of laminated sheets with different sizes, preferably, in order to maximally adapt to the outer shape (usually, a trapezoid structure) of the segmented core, the number of the laminated sheets with different sizes is preferably as large as possible, but in consideration of the processing difficulty, in the embodiment of the present invention, the laminated core 200 is formed by laminating a plurality of segments of laminated sheets with gradually decreasing sizes, and a structure with three segments of laminated sheets is specifically described in the drawing, wherein the size of the laminated sheets in each segment is the same, and the sizes of the adjacent segments are different.

The invention also discloses a disc motor which comprises the segmented iron core. Since the segmented core has the advantages, the disc motor comprising the segmented core also has corresponding effects, which are not described in detail herein.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a segmentation iron core, its characterized in that, SMC iron core including lamination iron core and winding coil, the SMC iron core includes the SMC line stick and sets up the SMC inner embedded groove of SMC line stick, wherein, the outer peripheral face of SMC line stick is used for setting up the coil, the installation of SMC inner embedded groove the lamination iron core, the SMC inner embedded groove is the rectangle structure, the lamination iron core is folded by the lamination of same size and is pressed and form, the SMC iron core cladding is in the outer peripheral face of lamination iron core, just the both ends of lamination iron core are exposed outside the SMC iron core.

2. A segmented core as claimed in claim 1, characterised in that one end face of the SMC-bar is provided with a first SMC-pole shoe.

3. The segmented core as claimed in claim 2, wherein an end face of said SMC bar opposite to where said first SMC pole is located is provided with a second SMC pole.

4. The segmented core according to claim 1, wherein the laminated core is formed by laminating a plurality of laminated sheets, and the laminated sheets are silicon steel sheets, amorphous alloy sheets, permalloy sheets or iron-cobalt alloy sheets.

5. A disc motor comprising a segmented core as claimed in any one of claims 1 to 4.