TWI716322B - Electric mechanical structure and stator core component thereof - Google Patents

Abstract

An electric mechanical structure and a stator core component thereof include an arc yoke portion, two side connecting portions, and two arc tooth portions. An arc length of the arc yoke portion is greater than an arc length of each arc tooth portion. Each of the arc yoke portion and the two arc tooth portion has two sides. Each side connecting portion is connected between one side of the arc yoke portion and one side of one of the two arc tooth portions. A slit is located between the other sides of the two arc tooth portions. The arc yoke portion, the two side connecting portions, and the two arc tooth portions together form a winding space. The two arc tooth portions and/or the arc yoke portion have several arc-shaped inclined grooves.

Description

Motor structure and its stator core component

The invention relates to a motor structure, in particular to a permanent magnetic flux switching type motor structure and its stator core component.

The conventional integrated fan motor is based on a permanent magnet flux switching (FSPM) motor. The rotor of the motor has a salient pole combined fan blade. In order to maintain the overall output power and torque of the motor, the stator and magnet of the motor need to be The salient pole fan blades on the rotor are correspondingly constructed as inclined structures.

However, since other parts of the above-mentioned stator need to match the structure of the stator core, it is difficult to manufacture other parts. For example: in order to match the structure of the stator core, the magnet needs to be made into a parallelepiped; the space for the magnet cannot be completely filled; and, when winding, the oblique stator slot is not easy to wire, which will reduce the slot occupation rate. In addition, although some people have proposed a motor-compressor concept with a skewed slot stator and skewed magnets as the stator structure, it still needs improvement.

In view of this, it is necessary to provide a technical solution different from the past to solve the problems existing in the conventional technology.

An object of the present invention is to provide a motor structure that utilizes the arc-shaped inclined groove of the arc tooth portion of the stator iron core, so as to improve the performance of the motor and reduce the cost.

The second objective of the present invention is to provide a stator core component that utilizes the arc-shaped inclined groove of the arc tooth part to facilitate the improvement of the motor performance and the reduction of the cost.

In order to achieve the above objective, one aspect of the present invention provides a stator core component, including: an arc yoke portion having two sides; two side connecting portions; and two arc tooth portions, each having two sides; wherein the arc yoke portion The arc length of each arc tooth part is greater than the arc length of each arc tooth part, and each side connecting part is connected between one side of the arc yoke part and one side of the two arc tooth parts. There is a gap between the other side, the arc yoke part, the two side connecting parts and the two arc tooth parts jointly enclose a winding space, the two arc tooth parts and/or the arc yoke part have several arc shapes Oblique groove.

In an embodiment of the present invention, the two arc tooth portions and the arc yoke portion respectively have a convex arc surface and a concave arc surface, and the convex arc surface of each arc tooth portion and the concave arc surface of the arc yoke portion The space between the two arc-shaped inclined grooves is the same, and the arc-shaped inclined grooves are located on the concave arc surface of the two arc tooth portions and/or the convex arc surface of the arc yoke portion.

In an embodiment of the present invention, at least one of the arc-shaped oblique grooves extends from one of the two arc tooth parts to the other of the two arc tooth parts.

In an embodiment of the present invention, the spacing between the arc-shaped inclined grooves is the same.

In an embodiment of the present invention, the arc-shaped oblique grooves are divided into a plurality of groups, and the arc-shaped oblique grooves in the plurality of groups are curved into arcs in different directions.

In an embodiment of the present invention, each of the arc-shaped oblique grooves has a groove width and a groove bottom width, and the groove bottom width is greater than or equal to the groove width.

In an embodiment of the present invention, there are two arc edges between the two sides of each arc tooth part and between the two sides of the arc yoke part, and each of the arc-shaped inclined grooves penetrates the two arcs of the two arc tooth parts. Edge or two arc edges of the arc yoke.

To achieve the above objective, another aspect of the present invention provides a motor structure, including: a stator, including a plurality of stator core components, a plurality of magnetic parts and a plurality of windings, the plurality of stator core components and the plurality of windings The magnetic parts are spaced apart to form a ring shape, and the magnetic properties of any two adjacent magnetic parts are different. Each of the windings is wound between any two adjacent stator core members. The stator core member includes an arc yoke and two side joints. And two arc tooth parts, an arc length of the arc yoke part is greater than an arc length of each arc tooth part, the arc yoke part and the two arc tooth parts have two sides respectively, and each side connecting part is connected to the arc yoke Between one side of the arc part and one side of the two arc tooth parts, there is a gap between the other side of the two arc tooth parts, the arc yoke part, the two side connecting parts and the two arc tooth parts Together to form a winding space, the two arc tooth portions and/or the arc yoke portion have a plurality of arc-shaped oblique grooves; and a rotor is configured to be able to rotate relative to the stator, and the rotor has a plurality of oblique blades, The oblique blades are arranged opposite to the arc-shaped oblique groove.

In an embodiment of the present invention, the inclination direction of the plurality of oblique blades is the same as the inclination direction of at least one of the arc-shaped oblique grooves.

In an embodiment of the present invention, the plurality of magnetic elements are a plurality of vertical magnetic elements.

In an embodiment of the present invention, the two arc tooth portions and the arc yoke portion respectively have a convex arc surface and a concave arc surface, and the convex arc surface of each arc tooth portion and the concave arc surface of the arc yoke portion The space between the two arc-shaped inclined grooves is the same, and the arc-shaped inclined grooves are located on the concave arc surface of the two arc tooth portions and/or the convex arc surface of the arc yoke portion.

In an embodiment of the present invention, at least one of the arc-shaped oblique grooves extends from one of the two arc tooth parts to the other of the two arc tooth parts.

In an embodiment of the present invention, the spacing between the arc-shaped inclined grooves is the same.

In an embodiment of the present invention, the arc-shaped oblique grooves are divided into a plurality of groups, and the arc-shaped oblique grooves in the plurality of groups are curved into arcs in different directions.

In an embodiment of the present invention, each of the arc-shaped oblique grooves has a groove width and a groove bottom width, and the groove bottom width is greater than or equal to the groove width.

In an embodiment of the present invention, there are two arc edges between the two sides of each arc tooth part and between the two sides of the arc yoke part, and each of the arc-shaped inclined grooves penetrates the two arcs of the two arc tooth parts. Edge or two arc edges of the arc yoke.

In the motor structure and the stator core member of the present invention, the arc length of the arc yoke part through the stator core member is greater than the arc length of each arc tooth part, the arc yoke part and the two arc tooth parts have two sides, respectively, Each side connecting part is connected between one side of the arc yoke part and one side of the two arc tooth parts, and there is a gap between the other side of the two arc tooth parts, the arc yoke part, the two The side connecting part and the two arc tooth parts enclose a winding space, and the two arc tooth parts and/or the arc yoke part have a plurality of arc-shaped inclined grooves. If it is used in the motor manufacturing process, iron core and magnet processing can be eliminated, and the amount of windings can be reduced, resulting in a lighter weight and reduced copper loss, which can effectively reduce the cogging torque, thereby reducing the noise and vibration of the motor during operation.

In order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following will specifically cite the preferred embodiments of the present invention, together with the accompanying drawings, and describe in detail as follows. Furthermore, the directional terms mentioned in the present invention, such as up, down, top, bottom, front, back, left, right, inside, outside, side, surrounding, center, horizontal, horizontal, vertical, vertical, axial, The radial direction, the uppermost layer or the lowermost layer, etc., are only the direction of reference to the attached drawings. Therefore, the directional terms used are used to describe and understand the present invention, rather than to limit the present invention.

Referring to FIG. 1, one aspect of the present invention provides a stator core component, which may include: an arc yoke portion 1, two side connecting portions 2 and two arc tooth portions 3. The arc yoke portion 1 and the two arc tooth portions 3 have two sides respectively, and an arc length of the arc yoke portion 1 is greater than an arc length of each of the arc tooth portions 3, for example, the arc of the arc yoke portion 1 in the radial cross section The length is greater than the arc length of each arc tooth portion 3 in the radial cross section, and the arc length is, for example, the arc track length of the arc yoke portion 1 and the arc tooth portion 3 between the concave arc side line and the convex arc side line of the radial cross section; Each side connecting portion 2 is connected between one side of the arc yoke portion 1 and one side of the two arc tooth portions 3. The side connecting portion 2 can also be used to provide a magnetic member M, such as a vertical magnetic member (Permanent magnets such as rubidium iron boron magnets); there is a gap P between the other sides of the two arc tooth portions 3. In this example, the gap P can be used as a slot opening, which can make the product can be easily wound It can also achieve the magnetic circuit separating the two teeth to reduce magnetic leakage.

Moreover, as shown in Figure 1, the arc yoke portion 1, the two side connecting portions 2 and the two arc tooth portions 3 jointly enclose a winding space S, which can be used for winding to form a winding (such as a coil) W; The two arc tooth portion 3 and/or the arc yoke portion 1 have a number of arc-shaped oblique grooves 4 (as shown in Figure 1, the extension track of the arc-shaped oblique groove 4 does not overlap with a virtual tangent 4N, for It is highlighted that the extension track of the arc-shaped oblique groove 4 is non-linear, and the use of the non-linear arc-shaped extension track of the arc-shaped oblique groove 4 can improve the magnetic flux path guiding effect and can effectively reduce the twisting torque.

Specifically, as shown in Figure 1, a line between the two ends of the extension track of the arc-shaped oblique groove 4 is non-parallel to the edge of the two arc tooth portions 3 or the arc yoke portion 1, for example, When the arc tooth portion 3 or the arc yoke portion 1 is placed upright on a plane, the extension track of the arc-shaped oblique groove 4 extends obliquely, and its obliquely extending direction and angle can be changed according to actual needs, such as the left Oblique or right oblique, etc., but not limited to this). The following examples illustrate the implementation of the above embodiments of the present invention, but it is not limited thereto.

For example, the above-mentioned embodiments of the stator core components can be realized by using a metal laminate manufacturing technology, such as selective metal welding technology, such as using Fe-Si-Cr materials. For an embodiment, please refer to "Kai-Jyun Jhong, Tsung -Wei Chang, Wen-Hsi Lee, Mi-Ching Tsai, and I-Hua Jiang, Characteristic of high frequency Fe-Si-Cr material for motor application by selective laser melting, AIP Advances 9, 035317 (2019)" paper, but Not limited to this. Thereby, through metal laminated manufacturing technology, such as using Fe-Si-Cr material, many parts of the arc-shaped inclined groove forming the stator core member can be directly stacked, without additional processing and excavation of the groove, which can effectively realize the stator iron The embodiment of the core member achieves the effect that cannot be achieved by the conventional stator core.

Optionally, in an embodiment, as shown in Figure 1, the two arc tooth portions 3 and the arc yoke portion 1 have a convex arc surface and a concave arc surface, for example: the two arc tooth portions 3 and The radial cross section of the arc yoke portion 1 is curved toward a virtual center (not shown) to form two opposing arc surfaces, and the arc surface close to the virtual center of the two opposing arc surfaces is an inner concave arc surface (for example, as shown in Figure 1). The surface marking the position of the 4N dashed line is concave), the arc surface far from the virtual center of the two opposing arc surfaces is an outer convex arc (for example, the back surface of the position where the 4N dashed line is marked in Figure 1 is convex); The distance between the convex arc surface of the arc tooth portion 3 and the concave arc surface of the arc yoke portion 1 is the same. For example, the arc-shaped inclined grooves 4 may be located on the concave arc surface of the two arc tooth portions 3 or the arc yoke The convex arc surface of the part 1, but not limited to this. For example, the arc-shaped oblique grooves 4 can also be located on the concave arc surface of the two arc tooth parts 3 and the convex arc surface of the arc yoke part 1 to suit the actual Application requirements; here only the arc-shaped oblique groove 4 is located on the concave arc surface of the arc tooth portion 3 as an example, but not limited to this. Thereby, the arc-shaped oblique grooves can be used to guide the magnetic flux path. The effect is no less than that of the conventional oblique slot stator. In addition to achieving the same performance output, it can also reduce the cogging torque. It should be noted that in this example, the arc-shaped oblique groove 4 forms an arc-shaped oblique groove structure. Compared with other configurations, in addition to further reducing the twisting torque, it can also simplify the permanent magnet manufacturing process. The magnet used in this example (such as M in Figure 1) is a conventional straight magnet that is easy to obtain; the permanent magnet in Figure 2 (such as 912 in Figure 2) is an unconventional oblique magnet that is not easy to make In contrast, the above embodiments of the present invention have differentiated advantages in magnet processing difficulty and acquisition cost.

Optionally, in an embodiment, as shown in Figure 1, at least one of the arc-shaped oblique grooves 4 extends from one of the two arc-tooth parts 3 to the other of the two arc-tooth parts 3. One. In this way, the magnetic flux path can be assisted and the stagger torque can be reduced.

Optionally, in an embodiment, as shown in Figure 1, the spacing between the arc-shaped inclined grooves 4 is the same. In this way, the effect of equidistant guiding of the magnetic flux path can be achieved, and the stutter torque can be effectively reduced. However, it is not limited to this, and the spacing between the arc-shaped oblique grooves 4 can also be of different types, for example, a variety of spacings are formed to meet different usage requirements.

Optionally, in an embodiment, as shown in FIG. 1, the arc-shaped oblique grooves 4 are divided into a plurality of groups, and the arc-shaped oblique grooves 4 in the plurality of groups are curved into arcs in different directions. For example: if divided into two groups, the arc-shaped sloping grooves 4 in the two groups can be bent into arcs in different directions, for example, the arc-shaped sloping grooves in a first group are toward the upper right virtual center Form an arc, and the arc-shaped oblique groove in the second group forms an arc toward the virtual center of the lower left; but not limited to this, if divided into four groups, the arc-shaped oblique in the four groups The ditch 4 can respectively form an arc toward the virtual center of the upper left, upper right, lower left, and lower right. The arcs of different arc-shaped inclined grooves can be selected as the same or different according to actual needs. In this way, the magnetic flux path guiding effect can be designed in response to special applications, which can effectively expand the breadth of product application.

Optionally, in one embodiment, as shown in Figure 1, each of the arc-shaped inclined grooves 4 has a groove width and a groove bottom width. The groove bottom width may be greater than or equal to the groove width, for example, The width of the groove opening is the width of the arc-shaped oblique groove 4 opened on the surface of the arc tooth portion 3 (such as a concave arc surface) or the arc yoke portion 1 (such as a convex arc surface), and the width of the groove bottom is the arc The width of the curved groove 4 at the concave bottom surface of the curved tooth portion 3 (such as a concave curved surface) or the curved yoke portion 1 (such as a convex curved surface). If the width of the groove bottom is greater than the width of the groove opening, the curved The radial section of the oblique groove 4 can be, for example, a female dovetail groove shape (which can be formed by metal lamination manufacturing technology); if the width of the groove bottom is equal to the width of the groove opening, the radial cross section of the arc-shaped oblique groove 4 can be formed, for example, ㄇ or The U shape (for example, it can be formed by metal laminate manufacturing or surface processing technology), which can be understood by those skilled in the art, and will not be repeated. In this way, the effect of adjusting the magnetic flux can be achieved and assisting in improving the staggered torque.

Optionally, in an embodiment, as shown in Figure 1, between the two sides (such as the left and right sides) of the arc tooth portion 3 and between the two sides (such as the left and right sides) of the arc yoke portion 1 There are two arc edges (such as upper and lower arc edges) respectively, and each arc-shaped oblique groove 4 penetrates the two arc edges of the two arc tooth portions 3 or the two arc edges of the arc yoke portion 1. Thereby, the guiding effect of the magnetic flux path can be improved, and the staggered torque can be effectively reduced.

In addition, please refer to FIG. 2, which is a combined perspective view of a permanent magnetic flux switching fan motor related to the present invention. Among them, the permanent magnet flux switching (FSPM) fan motor 9 has a stator 91 and a rotor 92. The stator 91 includes a plurality of stator core units 911, a plurality of magnets 912, and a plurality of coils 913. The plurality of stator core units 911 and the plurality of magnets 912 form a ring shape at intervals, and any two adjacent magnets 912 The magnetism is different, each of the coils 913 is wound between any two adjacent stator core units 911; the rotor 92 is combined with several salient pole fan blades 921 and is configured to be able to rotate relative to the stator 91, for example: an inner rotor motor In the configuration, a part of the rotor 92 may be located inside the stator 91; but not limited to this, in an outer rotor motor configuration, a part of the rotor 92 may be located outside the stator 91.

As shown in Fig. 3, in the permanent magnet flux switching fan motor 9, in order to maintain the overall output and torque of the motor and reduce the influence of the rotor 92 on the motor performance, the stator 91 needs to be connected to the rotor 92 The salient pole fan blades 921 are placed at the same angle. Therefore, the plurality of stator core units 911 and the plurality of magnets 912 need to cooperate with the salient pole fan blades 921 on the rotor 92 to be constructed as an oblique structure. For example, the plurality of stator core units 911 must be processed to produce an oblique structure. And the magnet 912 needs to be processed into an inclined parallelepiped.

However, since the magnet 912 needs to be processed into an oblique parallelepiped, in addition to increasing the cost of magnet manufacturing, due to processing accuracy, etc., the stator cannot completely fill the space for placing the magnet; subsequently, in the coil 913 When winding, the inclined structure is less easy to wire the stator than the non-inclined structure, resulting in a decrease in slot occupation rate.

In contrast, if the above-mentioned stator 91 is replaced by the above-mentioned embodiment of the stator core member of the present invention, for example, as shown in Figure 1, each side connecting portion 2 of the stator core member of the present invention is connected to the arc Between one side of the yoke 1 and one side of the two arc tooth parts 3, the gap P is provided between the other side of the two arc tooth parts 3, the arc yoke part 1, the two side joint parts 2 and the two arc tooth portions 3 enclose the winding space. The two arc tooth portions 3 and/or the arc yoke portion 1 have a plurality of arc-shaped inclined grooves 4, and the side connecting portion 2 can be used to set the vertical magnetic The piece M uses the stator core member of the present invention and several vertical magnetic pieces M to be spaced apart to form a ring shape. The magnetic properties of any two adjacent vertical magnetic pieces M are different. The arc yoke portion 1, the two side connecting portions 2, and The two arc tooth portions 3 enclose the winding space and can be used to wind two sets of windings W, so that each winding W is wound between any two adjacent stator core members.

Therefore, if the above-mentioned embodiment of the stator core member of the present invention is used to construct the permanent magnetic flux switching fan motor, the vertical magnetic member can be directly used, and there is no need to use the inclined structure of the stator core unit and the magnet, because the magnet does not need to be Processed into an inclined parallelepiped can not only reduce the cost of increasing magnet production, but also improve the problem that the stator cannot completely fill the space for placing the magnet; moreover, when winding, it can also avoid the inclined structure of the stator The wiring is not easy to cause a decrease in the slot occupation rate.

It should be noted that the non-tilted stator formed by the above-mentioned embodiment of the stator core member of the present invention will be easier to arrange the coils neatly on the winding, thereby reducing the amount of windings and reducing the weight; moreover, the amount of copper used for winding is The reduction and resistance value decrease, so the copper loss is reduced; due to the non-tilted design, compared with the tilted design, the cogging torque can be effectively reduced, thereby reducing the noise and vibration of the motor during operation.

For example, if the above-mentioned embodiment of the stator core member of the present invention is applied to form a vertical permanent magnetic flux switching fan motor, compared to the original inclined permanent magnetic flux switching fan motor (hereinafter referred to as the inclined motor) , The original 1605mm ³ of magnets required for tilt motors can be reduced to 1080mm ³ , which can greatly reduce the amount of magnets by 32%. The original tilt motor stator core consumption is 6750mm ³ reduced to 5796mm ³ , which can greatly reduce the core material by 14.1%. In addition to saving materials, the original tilt motor's cogging torque of 22.65 mN-m can be reduced to 15.08 mN-m, can greatly reduce 33.4% sudden torque.

Therefore, applying the above-mentioned embodiment of the stator core member of the present invention, another aspect of the present invention provides a motor structure, including: a stator, including a plurality of stator core members, a plurality of magnetic parts and a plurality of windings, the plurality of stators The core member and the plurality of magnetic members are spaced apart to form a ring shape, and the magnetic properties of any two adjacent magnetic members are different. Each of the windings is wound between any two adjacent stator core members. The stator core member includes an arc The yoke portion, the two side connecting portions, and the two arc tooth portions, an arc length of the arc yoke portion is greater than an arc length of each arc tooth portion, the arc yoke portion and the two arc tooth portions have two sides, each of the sides The connecting portion is connected between one side of the arc yoke portion and one side of the two arc tooth portions, a gap is provided between the other side of the two arc tooth portions, and the arc yoke portion and the two sides are connected The two arc tooth parts and the two arc tooth parts jointly enclose a winding space, the two arc tooth parts and/or the arc yoke part have a plurality of arc-shaped inclined grooves; and a rotor is configured to be able to rotate relative to the stator, the rotor It has several oblique blades (such as forming a blade structure that can be used for axial flow fans or salient pole blades that can be used for permanent magnetic flux switching fans, etc.), the oblique blades are separated from the arc-shaped oblique groove Relative settings. Wherein, the implementation of the stator core member has been described above, and will not be repeated here.

In an embodiment, the plurality of magnetic elements are a plurality of vertical magnetic elements; in addition, the inclination direction of the plurality of oblique blades is the same as the inclination direction of at least one of the plurality of arc-shaped oblique grooves, for example, the plurality of The inclination direction of the oblique blades and the inclination direction of the arc-shaped oblique grooves can be the same, which can improve the effect of guiding the magnetic flux path. In this way, by arranging the arc-shaped oblique grooves, not only can the output power and torque be improved, but also the amount of magnet and iron core materials can be reduced, and the processing procedure can be simplified, which can greatly save costs.

It should be understood that the above-mentioned motor structure embodiments of the present invention can be applied to the configuration of motors, fans, generators, etc., and the structure can also be adjusted according to special needs, so as to be suitable for providing power vehicles (such as vehicles, boats, etc.). , Airplanes, helicopters, etc.), but not limited to this.

In summary, the above-mentioned motor structure of the present invention and the embodiment of the stator core member of the present invention, the arc length of the arc yoke part through the stator core member is greater than the arc length of each arc tooth part, the arc yoke part and the two arcs The tooth parts have two sides respectively, and each side connecting part is connected between one side of the arc yoke part and one side of the two arc tooth parts, and there is a gap between the other side of the two arc tooth parts, The arc yoke part, the two side connecting parts and the two arc tooth parts enclose a winding space, and the two arc tooth parts and/or the arc yoke part have a plurality of arc-shaped inclined grooves. If it is used in the motor manufacturing process, iron core and magnet processing can be eliminated, and the amount of windings can be reduced, resulting in a lighter weight and reduced copper loss, which can effectively reduce the cogging torque, thereby reducing the noise and vibration of the motor during operation.

Although the present invention has been disclosed in preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be subject to the scope of the attached patent application.

1: Arc yoke 2: side joint 3: Arc tooth 4: Arc-shaped oblique groove 4N: Virtual Tangent M: Magnetic parts P: gap S: winding space Wv winding 9: Permanent magnet flux switching fan motor 91: stator 911: Stator core unit 912: Magnet 913: Coil 92: Rotor 921: Salient Fan Blade

[Figure 1]: A combined perspective view of a stator core member combined with magnetic parts and windings in an embodiment of the present invention. [Figure 2]: A combined perspective view of a permanent magnetic flux switching fan motor related to the present invention. [Figure 3]: An enlarged schematic view of the stator core member combined with a magnetic member in Figure 2.

1: Arc yoke

2: side joint

3: Arc tooth

4: Arc-shaped oblique groove

4N: Virtual Tangent

M: Magnetic parts

P: gap

S: winding space

W: winding

Claims (16)

A stator core component includes: One arc yoke with two sides; Two side joints; and Two arc tooth parts, each with two sides; Wherein an arc length of the arc yoke part is greater than an arc length of each arc tooth part, and each side connecting part is connected between one side of the arc yoke part and one side of the two arc tooth parts, the There is a gap between the other sides of the two arc tooth parts, the arc yoke part, the two side connecting parts and the two arc tooth parts jointly enclose a winding space, the two arc tooth parts and/or the arc yoke part There are several arc-shaped oblique grooves. The stator core member according to claim 1, wherein the two arc tooth portions and the arc yoke portion respectively have a convex arc surface and a concave arc surface, and the convex arc surface of each arc tooth portion and the arc yoke portion The spacing between the concave arc surfaces is the same, and the several arc-shaped oblique grooves are located on the concave arc surface of the two arc tooth portions and/or the convex arc surface of the arc yoke portion. The stator core member according to claim 1, wherein at least one of the plurality of arc-shaped oblique grooves extends from one of the two arc-tooth parts to the other of the two arc-tooth parts. The stator core member according to claim 1, wherein the spacing between the arc-shaped inclined grooves is the same. The stator core member according to claim 1, wherein the arc-shaped inclined grooves are divided into a plurality of groups, and the arc-shaped inclined grooves in the plurality of groups are curved in different directions. The stator core member according to claim 1, wherein each of the arc-shaped oblique grooves has a groove width and a groove bottom width, and the groove bottom width is greater than or equal to the groove width. The stator core member according to claim 1, wherein there are two arc edges between the two sides of each arc tooth portion and between the two sides of the arc yoke portion, and each of the arc-shaped inclined grooves penetrates the two arc teeth The two arc sides of the part or the two arc sides of the arc yoke. A motor structure including: The stator includes several stator core components, several magnetic parts and several windings. The several stator core components and the several magnetic parts form a ring at intervals, and the magnetic properties of any two adjacent magnetic parts are different. Each of the windings is wound between any two adjacent stator core members. The stator core member includes an arc yoke portion, two side connecting portions and two arc tooth portions. An arc length of the arc yoke portion is greater than each of the arc teeth The arc yoke part and the two arc tooth parts have two sides respectively, and each side connecting part is connected between one side of the arc yoke part and one side of the two arc tooth parts, There is a gap between the other sides of the two arc tooth parts, the arc yoke part, the two side connecting parts and the two arc tooth parts jointly enclose a winding space, the two arc tooth parts and/or the arc yoke The part has several arc-shaped oblique grooves; and A rotor is configured to be able to rotate relative to the stator, the rotor has a plurality of oblique blades, and the oblique blades are arranged opposite to the arc-shaped oblique groove. The motor structure according to claim 8, wherein the inclination direction of the plurality of oblique blades is the same as the inclination direction of at least one of the plurality of arc-shaped oblique grooves. The motor structure according to claim 8, wherein the plurality of magnetic parts are a plurality of vertical magnetic parts. The motor structure of claim 8, wherein the two arc tooth portions and the arc yoke portion have a convex arc surface and a concave arc surface, respectively, and the convex arc surface of each arc tooth portion and the concave arc of the arc yoke portion The distances between the surfaces are the same, and the arc-shaped oblique grooves are located on the concave arc surface of the two arc tooth portions and/or the convex arc surface of the arc yoke portion. The motor structure according to claim 8, wherein at least one of the plurality of arc-shaped inclined grooves extends from one of the two arc-tooth parts to the other of the two arc-tooth parts. The motor structure according to claim 8, wherein the spacing between the arc-shaped inclined grooves is the same. The motor structure according to claim 8, wherein the arc-shaped inclined grooves are divided into a plurality of groups, and the arc-shaped inclined grooves in the plurality of groups are curved in different directions. The motor structure according to claim 8, wherein each of the arc-shaped oblique grooves has a groove bottom width and a groove bottom width, and the groove bottom width is greater than or equal to the groove bottom width. The motor structure according to claim 8, wherein there are two arc sides between the two sides of each arc tooth portion and between the two sides of the arc yoke portion, and each of the arc-shaped oblique grooves penetrates through the two arc tooth portions Two arc edges or two arc edges of the arc yoke.

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