TWI753577B - Motor device and motor stator - Google Patents

Abstract

A motor device and a motor stator are provided. The motor stator includes a plurality of stator frames and a plurality of copper windings. Each of the stator frames has a winding portion, a first blocking portion disposed in one end of the winding portion, and a second blocking portion disposed in the other one end of the winding portion. A ring groove is formed among the winding portion, the first blocking portion, and the second blocking portion of each of the stator frames. Each of the copper windings surrounds the corresponding winding portion so as to fill the ring groove of the corresponding winding portion in a stacked manner. Accordingly, each of the copper windings can greatly increase a slot ratio on the stator frames.

Description

Motor device and motor stator

The present invention relates to a motor device and a motor stator, in particular to a motor device and a motor stator with a high slot ratio.

The existing motor stator has a plurality of winding elements and a plurality of winding groups, each of the winding elements has a winding groove, and each of the winding groups is wound around the winding groove in a concentrated winding manner. However, enameled wires are mostly used for the windings of the existing motor stators, that is to say, the cross section of each winding is circular, so although each winding is fully wound around the winding element The winding groove, but there will be a gap between each adjacent enameled wire, that is to say, the winding group in the winding groove is limited by the shape to produce a stacking effect of gaps, resulting in the winding groove. There is still a lot of space inside that cannot be filled.

However, when an enameled wire with a thicker wire diameter (larger cross-sectional area) is used for winding, the enameled wire is difficult to bend and wind on the corresponding windings, resulting in the disadvantage that the existing motor stator still needs to be improved in manufacturing. .

Therefore, the inventor believes that the above-mentioned defects can be improved. Nate has devoted himself to research and application of scientific principles, and finally proposes an invention with reasonable design and effective improvement of the above-mentioned defects.

The technical problem to be solved by the present invention is to provide a motor device and a motor stator in view of the deficiencies of the prior art, which can effectively improve the possible defects of the prior motor stator.

An embodiment of the present invention discloses a motor device, which includes: a motor rotor having a rotating shaft, the motor rotor defining an axial direction along the length direction of the rotating shaft; and a motor stator disposed on the motor rotor The outer circumference, and the motor stator does not contact the outer circumference of the motor rotor, the motor stator includes: a plurality of stator windings, each with a winding part, a first stop part located at one end of the winding part, and a first stop part located at one end of the winding part. a second stop part at the other end of the winding part; each of the stator windings together forms a ring groove between the first stop part, the second stop part and the winding part; Each of the winding portions has two first side surfaces and two second side surfaces; and a plurality of copper sheet windings, respectively surrounding the winding portions of a plurality of the stator windings, thereby filling the winding portions in a stacked manner a ring groove; each of the copper sheet windings includes: a plurality of first sections and a plurality of second sections, which are staggered in a head-to-tail manner; and an insulator covering the two first sections segment and two of the second segments.

An embodiment of the present invention further discloses a motor stator, which includes a plurality of stator windings, each of which has a winding portion, a first stop portion located at one end of the winding portion, and a second stopper located at the other end of the winding portion A stop part; each of the stator windings together forms a ring groove between the first stop part, the second stop part and the winding part; each of the winding parts has two first stop parts one side surface and two second side surfaces; and a plurality of copper sheet windings, respectively surrounding the winding portions of a plurality of the stator windings, so as to fill the annular slots in a stacked manner; each of the copper sheet windings It includes: a plurality of first sections and a plurality of second sections, which are staggered in a head-to-tail manner; and an insulator covering two of the first sections and two of the second sections .

To sum up, one of the beneficial effects of the present invention is that the motor device provided by the present invention can respectively surround a plurality of the stator windings through a plurality of the copper sheet windings, thereby filling the rings in a stacked manner The slot design enables the motor stator to have a higher slot occupancy rate compared to the existing motor stator. Furthermore, under the condition that the motor stator and the conventional motor stator can provide the same magnetic field strength, the manufacturing difficulty of the motor stator can be effectively reduced compared with the conventional motor stator.

For further understanding of the features and technical content of the present invention, please refer to the following detailed descriptions and drawings related to the present invention, however, the drawings provided are only for reference and description, not for limiting the present invention.

The following are specific embodiments to illustrate the embodiments of the “motor device and motor stator” disclosed in the present invention, and those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are merely schematic illustrations, and are not drawn according to the actual size, and are stated in advance. The following embodiments will further describe the related technical contents of the present invention in detail, but the disclosed contents are not intended to limit the protection scope of the present invention. In addition, the term "or", as used herein, should include any one or a combination of more of the associated listed items, as the case may be.

It should be understood that although terms such as "first", "second" and "third" may be used herein to describe various elements or signals, these elements or signals should not be limited by these terms. These terms are primarily used to distinguish one element from another element, or a signal from another signal. In addition, the term "or", as used herein, should include any one or a combination of more of the associated listed items, as the case may be.

[First Embodiment]

Referring to FIGS. 1 to 5 , which are the first embodiment of the present invention, the present embodiment discloses a motor device 100 . The motor device 100 includes a motor rotor 1 and a motor stator 2 . It should be noted that the above-mentioned motor rotor 1 and motor stator 2 are collectively defined as the motor device 100 in this embodiment. However, the present invention is not limited to this. For example, in other embodiments not shown in the present invention, the motor stator 2 can also be used alone (eg, sold) or used in combination with other components. The structure of each element of the motor device 100 will be introduced separately below, and the connection relationship between the various elements of the motor device 100 will be described in a timely manner.

As shown in FIGS. 1 and 2 , the motor rotor 1 includes a rotating shaft 11 , two carriers 12 disposed on the rotating shaft 11 , and a plurality of iron cores 13 disposed between the two carriers 12 . , and a plurality of permanent magnet pieces 14 respectively arranged between the plurality of the iron cores 13 . The motor rotor 1 defines an axial direction AD along the length direction of the rotating shaft 11 . It should be noted that the configuration relationship among the rotating shaft 11 of the motor rotor 1, the two carriers 12, the plurality of the iron cores 13, and the plurality of the permanent magnet pieces 14 is not the focus of this case. It is a technology known to those skilled in the art, so it will not be described in detail here.

Referring to FIG. 2 and FIG. 3 , the motor stator 2 is disposed on the outer circumference of the motor rotor 1 , and the motor stator 2 does not contact the outer circumference of the motor rotor 1 , so that the motor stator 2 does not touch the outer circumference of the motor rotor 1 . The motor rotor 1 rotates. The motor stator 2 includes a plurality of stator windings 21 , a plurality of copper sheet windings 22 , and a plurality of insulating and thermally conductive adhesives 23 .

As shown in FIGS. 4 and 5 , each of the stator windings 21 has a winding portion 211 , a first stop portion 212 located at one end of the winding portion 211 , and a first stopper portion 212 located at the other end of the winding portion 211 . The second blocking portion 213 . Each of the stator windings 21 together forms a ring groove GP between the first blocking portion 212 , the second blocking portion 213 , and the winding portion 211 .

It should be noted that each of the stator windings 21 is composed of a main body and two end caps in this embodiment, and a long rib protrudes from both sides of the main body, so that the The cross section is roughly H-shaped, the two end caps are arranged on both ends of the body, and the shapes of the two end caps correspond to the body, so that the two sides of the stator winding 21 are formed with a certain shape. The first blocking portion 212 and the second blocking portion 213, the body has the winding portion 211 between the first blocking portion 212 and the second blocking portion 213, and the body The ring groove GP is formed together with the outer edges of the two end caps, but the present invention is not limited to what is described in this embodiment. For example, each of the stator windings 21 may also be directly formed with the annular groove GP from the body.

Specifically, in the cross section of each stator winding 21 perpendicular to the axial direction AD, each stator winding 21 is substantially H-shaped, and the first stopper 212 has a The length L1 (or arc length) is greater than the length L2 (or arc length) of the second stopper portion 213 , but the present invention is not limited to what is described in this embodiment.

In addition, each of the wrapping portions 211 is substantially a rectangular quadrangular column, so that the outer edge of each wrapping portion 211 has two first side surfaces 2111 and two second side surfaces 2112, and the two first side surfaces 2111 They are the long side surfaces of the wrapping portion 211 respectively, the two second side surfaces 2112 are the short side surfaces of the wrapping portion 211 respectively, each of the first side surfaces 2111 is rectangular, and each of the second side surfaces 2112 is a rectangle. Rectangular, that is to say, the cross section of each of the winding portions 211 is rectangular, but the present invention is not limited to what is described in this embodiment. For example, in other embodiments of the present invention that are not shown, each of the winding portions 211 may also be substantially trapezoidal quadrangular columns, that is, that is to say, the transverse direction of each of the winding portions 211 The cross section is trapezoidal, each of the first side surfaces is rectangular, and each of the second side surfaces 2112 is trapezoidal.

A plurality of copper sheet windings 22 surround the winding portions 211 of the plurality of stator windings 21 respectively, so as to fill the annular groove GP in a stacked manner. Each of the copper sheet windings 22 has a plurality of first segments 221 , a plurality of second segments 222 , and an insulator 223 . Specifically, a plurality of the first sections 221 and a plurality of the second sections 222 are staggered in a head-to-tail manner, that is to say, the two ends of any one of the first sections 221 are respectively The second segment 222 is connected, and the first segment 221 is respectively connected to both ends of any second segment 222 . For the convenience of description, in this embodiment, a plurality of the first sections 221 are respectively arranged at positions corresponding to the two first side surfaces 2111 , and a plurality of the second sections 222 are respectively arranged at positions corresponding to the two The position of the second side surface 2112 will be described, but the present invention is not limited to what is described in this embodiment. For example, the connecting position between the first section 221 and the second section 222 may also be located in the middle of the first side surface 2111 or the second side surface 2112 .

In other words, when any one of the copper sheet windings 22 surrounds the corresponding stator winding 21 , a plurality of the first sections 221 are arranged on the two first side surfaces 2111 and are located on the two first side surfaces 2111 . The number of the plurality of first sections 221 on the first side surface 2111 is the same, and the shape and width of each first section 221 corresponding to the position of the first side surface 2111 are the same; The second section 222 is disposed on the two second side surfaces 2112, and the number of the plurality of second sections 222 located on the two second side surfaces 2112 is the same, and each of the second sections The shape and width of the second side surface 2112 corresponding to the position of 222 are the same. That is to say, each of the first sections 221 and each of the second sections 222 are rectangular in this embodiment.

Further, the plurality of first sections 221 and the plurality of second sections 222 of each of the copper sheet windings 22 are connected to each other by welding so as to be electrically conductive, and the connection by welding can The width of any one of the first segments 221 and any one of the second segments 222 can be adjusted according to the size (eg, width) of the annular groove GP, but the present invention is not limited to what is described in this embodiment. For example, each of the copper sheet windings 22 may also be integrally formed with a plurality of the first sections 221 and a plurality of the second sections 222 .

Referring back to FIG. 2 , FIG. 3 , and FIG. 5 , the insulator 223 covers the plurality of first sections 221 and the plurality of second sections 222 , so that any two adjacent and stacked all The first section 221 and any two adjacent and stacked second sections 222 are insulated. Each of the insulating and thermally conductive adhesives 23 wraps the corresponding copper sheet winding 22, so that each of the copper sheet windings 22 is fixed on the corresponding stator winding 21. Accordingly, each of the insulating and thermally conductive adhesives 23 can strengthen the insulation effect between any two adjacent and stacked first sections 221 and any two adjacent and stacked second sections 222, and at the same time the copper sheet windings 22 The heat energy is discharged, thereby greatly improving the heat dissipation effect of the motor stator 2 .

[Second Embodiment]

As shown in FIG. 6 , which is the second embodiment of the present invention, this embodiment is similar to the above-mentioned first embodiment, and the similarities between the two embodiments will not be repeated. The differences between the embodiments are mainly:

In any one of the copper sheet windings 22 and the corresponding surrounding stator windings 21 , the copper sheet winding 22 forms an M layer on the winding portion 211 and an N layer stacked on the Mth layer, and M and N is a positive integer greater than 1. That is, the copper sheet windings 22 of the first layer to the Mth layer are adjacent to the winding portion 211 than the copper sheet windings 22 of the M+1th layer to the M+Nth layer.

Further, as shown in FIG. 6 , in the cross section of each stator winding 21 perpendicular to the axial direction AD, the thickness of the stacked first section 221 of the M layer is the same as the thickness of the first section 221 of the M layer. The height H of the second stopper portion 213 on the side of the annular groove GP adjacent to the second stopper portion 213 is substantially the same, and the first section 221 from the M+1th layer to the M+Nth layer is approximately the same. The width W decreases in the direction away from the corresponding winding portion 211 , and the width of the first section 221 from the M+1th layer to the M+Nth layer decreases by a difference G, The difference G can be adjusted according to the size of different motor stators.

In other words, when any one of the copper sheet windings 22 surrounds the corresponding stator winding 21, the cross-sections of the two parallel to the axial direction AD are substantially trapezoidal, so that the The space in the annular groove GP of the stator winding 21 is increased, thereby increasing the slot occupancy rate.

[Advantageous effects of the embodiment]

To sum up, one of the beneficial effects of the present invention is that the motor device 100 provided by the present invention can surround a plurality of the stator windings 21 by a plurality of the copper sheet windings 22 respectively, so as to fill up in a stacked manner. The design of the annular groove GP enables the motor stator 2 to have a higher slot occupancy rate than the conventional motor stator. Furthermore, under the condition that the motor stator 2 and the conventional motor stator can provide the same magnetic field strength, the manufacturing difficulty of the motor stator 2 can be effectively reduced compared with the conventional motor stator.

The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, any equivalent technical changes made by using the contents of the description and drawings of the present invention are included in the application of the present invention. within the scope of the patent.

100: Motor unit 1: Motor rotor 11: Spindle 12: Carrier 13: Iron core 14: Permanent magnets 2: Motor stator 21: stator winding 211: Winding Department 2111: The first side 2112: Second side 212: The first stop 213: Second stop 22: Copper sheet winding 221: First Section 222: Second Section 223: Insulator 23: Insulation thermal conductive glue GP: Ring Groove AD: Axial direction G: Difference W: width H: height L1, L2: length M, N: layer

FIG. 1 is an exploded schematic view of a motor device according to a first embodiment of the present invention.

FIG. 2 is an exploded schematic view of the motor stator according to the first embodiment of the present invention.

FIG. 3 is a perspective view of the stator winding of the motor stator surrounded by copper sheet windings according to the first embodiment of the present invention.

4 is an exploded schematic view of the copper sheet windings and stator windings of the motor stator according to the first embodiment of the present invention.

FIG. 5 is a schematic cross-sectional view along the line V-V of FIG. 3 .

FIG. 6 is a schematic cross-sectional view of a stator winding of a motor stator surrounded by copper sheet windings according to a second embodiment of the present invention.

2: Motor stator

21: stator winding

211: Winding Department

2111: The first side

212: The first stop

213: Second stop

22: Copper sheet winding

221: First Section

223: Insulator

GP: Ring Groove

L1, L2: length

Claims (10)

A motor device, comprising: a motor rotor having a rotating shaft, the motor rotor defining an axial direction along the length direction of the rotating shaft; and a motor stator disposed on the outer circumference of the motor rotor, and the The motor stator does not contact the outer circumference of the motor rotor, and the motor stator includes: a plurality of stator winding parts, each with a winding part, a first stop part located at one end of the winding part, and a first stop part located at the other end of the winding part. a second stop part at one end; each of the stator windings together forms a ring groove between the first stop part, the second stop part and the winding part; each of the winding parts The part has two first side surfaces and two second side surfaces; and a plurality of copper sheet windings, respectively surrounding the winding portions of the plurality of the stator windings, so as to fill the annular slots in a stacked manner; each The copper sheet winding includes: a plurality of first sections and a plurality of second sections, which are staggered in a head-to-tail manner; and an insulator covering the plurality of the first sections and the plurality of all the the second section. The motor device of claim 1, wherein, in a cross section of each of the stator windings parallel to the axial direction, each of the stator windings is substantially H-shaped, and the first The length of a stop portion is greater than the length of the second stop portion. The motor device according to claim 2, wherein in any one of the copper sheet windings and the corresponding surrounding stator windings, the copper sheet windings form M layers on the winding portion and are stacked on the Mth coil. N layers on layers, and M and N are greater than 1 A positive integer of ; in the cross section of each of the stator windings parallel to the axial direction, the width of the first section of the M+1th layer to the M+Nth layer is away from the corresponding The direction of the winding portion decreases. The motor device of claim 3, wherein, in a cross section of each of the stator windings parallel to the axial direction, all of the M+1-th to M+N-th layers The width of the first section decreases by a difference. The motor device according to claim 1, wherein the motor stator further has a plurality of insulating and thermally conductive adhesives, and each of the insulating and thermally conductive adhesives wraps the corresponding copper sheet winding, so that each of the copper sheet windings is fixed on the corresponding stator windings. A motor stator, comprising: a plurality of stator windings, each with a winding portion, a first stop portion located at one end of the winding portion, and a second stop portion located at the other end of the winding portion; each A ring groove is jointly formed between the first blocking part, the second blocking part and the winding part of the stator winding; each of the winding parts has two first side surfaces and two second side surfaces. two side surfaces; and a plurality of copper sheet windings, respectively surrounding the winding portions of the plurality of stator windings, so as to fill the annular slots in a stacked manner; each of the copper sheet windings includes: a plurality of first A section and a plurality of second sections are staggered in a head-to-tail manner; and an insulator covers the plurality of the first sections and the plurality of the second sections. The motor stator of claim 6, wherein, in a cross section of each of the stator windings, each of the stator windings is substantially H-shaped, and the length of the first stopper is greater than the length of the second stop. The motor stator according to claim 7, wherein in any one of the copper sheet windings and the corresponding surrounding stator windings, the copper sheet windings form M layers on the winding portion and are stacked on the Mth coil. N layers on the layer, and M and N are positive integers greater than 1; in the cross section of each of the stator windings, the first section of the M+1th layer to the M+Nth layer is The width decreases away from the corresponding wrapping portion. The motor stator of claim 8, wherein, in a cross-section of each of the stator windings in a relative axial direction, the M+1 th to M+N th layers The width of the first segment decreases by a difference. The motor stator according to claim 6, wherein the motor stator further has a plurality of insulating and thermally conductive adhesives, and each of the insulating and thermally conductive adhesives wraps the corresponding copper sheet winding, so that each of the copper sheet windings is fixed on the corresponding stator windings.

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