CN112615444A

CN112615444A - Stator assembly and motor

Info

Publication number: CN112615444A
Application number: CN202011573766.0A
Authority: CN
Inventors: 朱秋阳; 祝伟杰
Original assignee: Shenzhen Weidu Intelligent Technology Co ltd
Current assignee: Shenzhen Weidu Intelligent Technology Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-04-06

Abstract

The invention discloses a stator assembly and a motor, wherein the stator assembly comprises a stator core, a plurality of square copper wires and a plurality of special-shaped switching metal pieces, the stator core is annularly provided with a plurality of wire grooves extending along the axial direction of the stator core, and the wire grooves are provided with openings communicated with the two axial ends of the stator core; the square copper wire enters a wire groove through an opening, and the wire groove is at least penetrated by the square copper wire; the special-shaped switching metal piece is arranged at the axial end part of the stator core, and two opposite ends of each special-shaped switching metal piece are respectively connected to the two square copper wires so as to electrically conduct the square copper wires. The technical scheme of the invention aims to ensure the full slot utilization rate of the stator core and simultaneously improve the manufacturing and mounting efficiency of the stator assembly.

Description

Stator assembly and motor

Technical Field

The invention relates to the technical field of motors, in particular to a stator assembly and a motor applying the stator assembly.

Background

Among the correlation technique, motor stator includes stator core and the thin round copper line of putting at stator core's wire casing of winding usually, but has great space between the two adjacent thin round copper lines, leads to stator core's wire casing utilization ratio lower, can change for the square copper line of cross-sectional area for guaranteeing the groove fullness rate, but in small-size motor's stator core, the square copper line has the problem of technology difficulty at the in-process of coiling, relies on workman manual operation seriously, lead to the installation effectiveness slower.

The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention mainly aims to provide a stator assembly, aiming at ensuring the full utilization rate of a stator core slot and improving the manufacturing and mounting efficiency of the stator assembly.

In order to achieve the above object, the present invention provides a stator assembly, comprising:

the stator core is annularly provided with a plurality of wire slots extending along the axial direction of the stator core, and the wire slots are provided with openings communicated with the two axial ends of the stator core;

the square copper wires enter the wire slot through the opening, and the wire slot is at least penetrated by one square copper wire; and

the stator core comprises a stator core, a plurality of special-shaped switching metal pieces and a plurality of square copper wires, wherein the stator core is provided with an axial end part, and the two axial end parts are respectively connected with the two ends of each special-shaped switching metal piece.

In an embodiment of the present application, a plurality of square copper wires at least partially pass through the opening of the slot and are located on the same axial end surface of the stator core, and one opposite ends of the special-shaped switching metal piece are respectively connected to two of the square copper wires located on the same end of the opening.

In an embodiment of the application, the special-shaped switching metal piece is arranged in a strip plate shape, and two ends of the special-shaped switching metal piece are respectively connected to two adjacent square copper wire connections.

In an embodiment of the application, the special-shaped switching metal piece is arranged in a rectangular block shape, the special-shaped switching metal piece is provided with two installation through holes which are arranged at intervals, and one end of each of two adjacent square copper wires penetrates through one installation through hole of the special-shaped switching metal piece.

In an embodiment of the application, the special-shaped switching metal piece comprises two fixed sections and an avoidance section, and the two fixed sections are respectively connected with two ends of the avoidance section in a bending manner;

the avoidance section penetrates through gaps of the square copper wires, so that the two fixing sections are respectively connected with one ends of the square copper wires arranged at intervals.

In an embodiment of the present application, the material of the special-shaped adapting metal piece is copper;

and/or the special-shaped switching metal piece is fixedly welded with the square copper wire.

In an embodiment of the application, the square copper wire comprises a connecting section and two inserting sections, and the two inserting sections are respectively connected to two opposite ends of the connecting section in a bending manner;

the two inserting sections penetrate through the two adjacent wire grooves respectively, so that the connecting section is abutted to the end face of the stator core, and the special-shaped switching metal piece is connected with one end, deviating from the connecting section, of the inserting section.

In an embodiment of this application, many the linkage segment of square copper line all is located stator core is ascending same terminal surface, and many the grafting section of square copper line all passes stator core deviates from the terminal surface of linkage segment.

In an embodiment of the application, a step surface is formed at one end of the insertion section, which is far away from the connecting section, so that one end of the special-shaped adapting metal piece is abutted and limited.

The present application further provides an electric machine comprising a stator assembly, the stator assembly comprising:

The stator assembly comprises a stator core, a plurality of square copper wires and a plurality of special-shaped switching metal pieces, wherein the stator core is annularly provided with a plurality of wire grooves extending along the axial direction of the stator core, each wire groove is provided with an opening communicated with two axial ends of the stator core, an operator enables the square copper wires to enter one wire groove through one opening, so that at least one square copper wire penetrates through each wire groove, the cross section area of each square copper wire is arranged in a square shape, and the effective area of the cross section area of each square copper wire is larger than that of a round copper wire of the same size, so that the square copper wires in the same wire groove can be arranged more tightly, the gap between every two adjacent copper wires is reduced, more square copper wires can be arranged in the wire grooves of the stator core, and the full-slot utilization rate of the wire grooves is improved. Meanwhile, the special-shaped switching metal pieces are arranged at the axial end parts of the stator core, and the two opposite ends of each special-shaped switching metal piece are respectively connected to the two square copper wires, so that the square copper wires are electrically conducted. So be used for connecting the square copper line through setting up special-shaped switching metalwork to need not make many square copper lines carry out a lot of and wind and put, and use the small-size motor in, the installation effectiveness is faster, and it is more convenient to operate, promotes the manufacturing installation effectiveness of stator assembly.

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 structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a stator assembly according to an embodiment of the present invention;

FIG. 2 is a schematic view of a stator assembly according to another aspect of the present invention;

FIG. 3 is a schematic cross-sectional view of a stator assembly of the present invention;

FIG. 4 is a schematic view of an assembly structure of a square copper wire and a stator core of the stator assembly of the present invention;

FIG. 5 is an exploded view of the stator assembly of the present invention;

FIG. 6 is a schematic view of a portion of the stator assembly of the present invention;

FIG. 7 is a partial schematic view of another state 1 stator assembly of the present invention;

fig. 8 is a partial structural view showing still another state of the stator assembly of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Stator assembly	221	Step surface
10	Stator core	30	Special-shaped switching metal piece
				11	Wire slot	31	Fixed segment
12	Opening of the container	32	Avoidance segment
				20	Square copper wire	33	Mounting through hole
21	Connecting segment	40	PCB board
				22	Plug-in section

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The present invention provides a stator assembly 100.

Referring to fig. 1 to 4, in the embodiment of the present invention, the stator assembly 100 includes a stator core 10, a plurality of square copper wires 20, and a plurality of special-shaped transition metal pieces 30, the stator core 10 is annularly provided with a plurality of slots 11 extending along an axial direction of the stator core 10, and the slots 11 have openings 12 communicating with two axial ends of the stator core 10; the square copper wire 20 enters a wire slot 11 through an opening 12, and at least one square copper wire 20 penetrates through one wire slot 11; the special-shaped switching metal members 30 are disposed at the axial end of the stator core 10, and opposite ends of each special-shaped switching metal member 30 are respectively connected to the two square copper wires 20, so that the plurality of square copper wires 20 are electrically connected.

Wherein, this stator core 10 can be the cylinder setting to in the installation is gripped to operating personnel, this stator core 10's center is formed with the installation space who supplies the rotor holding simultaneously, and a plurality of wire casings 11 set up along stator core 10's circumference, and a plurality of wire casings 11 all offer the mouth of stepping down that communicates this installation space, so that stator assembly 100 and rotor cooperate better. Furthermore, the cross-sectional area of the wire chase 11 may be in the regular shape of a rectangle or an isosceles trapezoid to better fit the cross-sectional area of the square copper wire 20. It should be noted that, a wire casing 11 is at least provided with one square copper wire 20 in a penetrating manner, that is, a plurality of square copper wires 20 can be accommodated in the wire casing 11 according to the user's needs, so as to further improve the full utilization rate of the wire casing 11.

The stator assembly 100 of the present invention includes a stator core 10, a plurality of square copper wires 20, and a plurality of special-shaped transition metal pieces 30, wherein the stator core 10 is provided with a plurality of slots 11 extending along the axial direction of the stator core 10, each slot 11 is provided with an opening 12 communicating with two axial ends of the stator core 10, an operator enters the square copper wire 20 into one slot 11 through one opening 12, so that at least one square copper wire 20 is arranged in each slot 11, since the cross-sectional area of the square copper wire 20 is arranged in a square shape, and the cross-sectional area of the square copper wire 20 is larger than the effective area of a round copper wire of the same size, thereby make the square copper line 20 that is located same wire casing 11 can arrange inseparabler, reduce the space between two adjacent copper lines, make stator core 10's wire casing 11 in can set up more square copper lines 20, promoted the full utilization ratio in groove of wire casing 11. Meanwhile, the special-shaped switching metal pieces 30 are disposed at the axial end of the stator core 10, and opposite ends of each special-shaped switching metal piece 30 are respectively connected to the two square copper wires 20, so that the plurality of square copper wires 20 are electrically conducted. So be used for connecting square copper line 20 through setting up special-shaped switching metalwork 30 to need not make many square copper lines 20 carry out a lot of and wind and put, and use the small-size motor in, the installation effectiveness is faster, and it is more convenient to operate, promotes stator assembly 100's manufacturing installation effectiveness.

In an embodiment of the present application, referring to fig. 1, 4 and 5, a plurality of square copper wires 20 at least partially pass through the openings 12 of the slots 11 and are located on the same end surface of the stator core 10 in the axial direction, and opposite ends of a special-shaped transition metal 30 are respectively connected to one ends of the two square copper wires 20 located on the same opening 12. Wherein, for the convenience of user's installation, thereby this many square copper wires 20 at least part passes wire casing 11 and is located stator core 10's the same terminal surface of axial ascending, so the user only needs to carry out the connection of a plurality of dysmorphism switching metalworks 30 at stator core 10's the same terminal surface of axial ascending, need not to go deep into wire casing 11, make the installation of a plurality of dysmorphism switching metalworks 30 convenient and swift more, single dysmorphism switching metalwork 30's both ends all are located the same opening 12's of stator core 10 one end simultaneously, in order to avoid dysmorphism switching metalwork 30 to need to span the axial both ends of stator assembly 100, thereby avoid increasing whole stator assembly 100's volume, in order to be more convenient for stator assembly 100.

Further, referring to fig. 6 to 8, the special-shaped metal switching member 30 is disposed in a long plate shape, and two ends of the special-shaped metal switching member 30 are respectively connected to two adjacent square copper wires 20. Specifically, this dysmorphism switching metalwork 30 can be the setting of rectangular form board, so can guarantee two adjacent square copper wires 20 electric connection and switch on, avoid the volume that dysmorphism switching metalwork 30 occupy too big simultaneously to further avoid increasing whole stator assembly 100's volume, so that stator assembly 100's installation is used more conveniently.

Alternatively, referring to fig. 6 to 8, the special-shaped transferring metal member 30 is disposed in a rectangular block shape, two mounting through holes 33 are formed in the special-shaped transferring metal member 30, and one end of each of two adjacent square copper wires 20 passes through one of the mounting through holes 33 of the special-shaped transferring metal member 30. Specifically, this dysmorphism switching metalwork 30 is the cubic setting of rectangle, and through set up the installation through-hole 33 that two intervals set up at dysmorphism switching metalwork 30, so pass opening 12 of wire casing 11 and be located the two adjacent square copper wires 20's of the same terminal surface of stator core 10 axial one end can pass two installation through-holes 33, in order to realize that this two adjacent square copper wires 20 electric connection switches on, this installation is also comparatively accurate and convenient and fast simultaneously, this dysmorphism switching metalwork 30 is the cubic setting of rectangle and has also increased the area of contact of two square copper wires 20 and dysmorphism switching metalwork 30, in order to further improve the stability after two square copper wires 20 install.

Alternatively, referring to fig. 6 to 8, the special-shaped transition metal piece 30 includes two fixing sections 31 and an avoiding section 32, and the two fixing sections 31 are respectively bent to connect two ends of the avoiding section 32; the escape segment 32 passes through the gaps of the plurality of square copper wires 20, so that the two fixed segments 31 are respectively connected with one ends of the two square copper wires 20 arranged at intervals. Specifically, because the rule of the rule winding of the motor of different model demands is different, thereby there is the interval of need making two side copper wires 20 far away to connect, so this dysmorphism switching metalwork 30 includes two canned paragraph 31 and dodges the section 32, connect the one end of the side copper wire 20 that two intervals set up respectively through two canned paragraph 31, and make and dodge the section 32 and pass the clearance of a plurality of side copper wires 20, thereby in order to realize the electric conduction connection of two side copper wires 20 far away in the interval, wherein should dodge the section 32 and can be the arc setting, with the adaptation in stator core 10's outline and other dysmorphism switching metalworks 30, so make stator assembly 100's overall structure compacter.

It should be noted that, a plurality of dysmorphism switching metalwork 30 can be different shapes setting simultaneously, can be partly to be rectangular form setting, and partly be rectangular block shape setting to and partly be including two fixed sections 31 and dodge section 32, thereby can select the required shape and size of dysmorphism switching metalwork 30 according to actual need, so that stator core 10, square copper line 20 and the assembly of dysmorphism switching metalwork 30 are compacter. Meanwhile, the thickness values of the plurality of special-shaped switching metal parts 30 can be kept consistent, so that when the plurality of special-shaped switching metal parts 30 are installed on the square copper wires 20 partially located at the same height, the plurality of special-shaped switching metal parts 30 are installed and then located on the same surface, and one end of the stator assembly 100 is arranged in a plane. To further avoid increasing the volume of the entire stator assembly 100, so as to facilitate the installation and use of the stator assembly 100.

Referring to fig. 1, 2 and 5, in order to further improve the space utilization of the stator assembly 100, so that the portions of square copper wires 20 extending out of the same opening 12 can have different heights, so that the shaped transition metal piece 30 can have a layered three-dimensional design, namely, a plurality of the shaped transition metal fittings 30 may be stacked to electrically connect a plurality of square copper wires 20, so that the category of the shaped transition metal pieces 30 connected with the adjacent two copper wires 20 on the same tooth can be arranged on the same layer, so that the special-shaped transition metal piece 30 connected with the two adjacent copper wires 20 which are remotely connected across the slot, and the special-shaped transition metal piece 30 is remotely connected with the long-distance cross slot, and the two categories can be arranged at the second layer or higher layer of the three-dimensional space of the stator assembly 100 so as to improve the utilization rate of the space.

Optionally, referring to fig. 1 and 5, the stator assembly 100 further includes a PCB 40, the PCB 40 is disposed on a side of the stator core 10 away from the connecting section 21, and the PCB 40 is fixedly connected to the plurality of special-shaped transition metal members 30. In order to further ensure the stability of the plurality of special-shaped switching metal parts 30 after installation, the PCB 40 with the bonding pads and the special-shaped switching metal parts 30 at the same height are adopted for fixation and reinforcement, and the special-shaped switching metal parts 30 are welded and fixed on the PCB 40, so that all coil groups are mutually structurally connected, the end strength is enhanced, and the vibration caused by the electromagnetic force influence of the winding is reduced. It should be noted that the PCB 40 is opened with a through hole for the copper wire 20 to pass through.

In an embodiment of the present application, the material of the special-shaped transferring metal member 30 is copper; the special-shaped adapting metal piece 30 can be made of copper, so that the electrical conduction connection between the square copper wires 20 can be ensured, and the price of copper is low, thereby reducing the overall cost of the stator assembly 100. Of course, the special-shaped transition metal piece 30 may also be made of a metal material such as copper-molybdenum alloy, which may be selected by those skilled in the art and will not be described herein.

Optionally, the special-shaped transition metal piece 30 is welded and fixed with the square copper wire 20. Specifically, the special-shaped transition metal piece 30 is welded and fixed to the square copper wire 20 through various welding processes, so that the connection reliability between the special-shaped transition metal piece 30 and the square copper wire 20 is ensured, and the special-shaped transition metal piece can be connected and conducted by a soldering or other welding method selected by a person skilled in the art.

In an embodiment of the present application, referring to fig. 4, the square copper wire 20 includes a connection section 21 and two insertion sections 22, and the two insertion sections 22 are respectively connected to two opposite ends of the connection section 21 in a bent manner; the two insertion sections 22 respectively penetrate through the two adjacent slots 11, so that the connection section 21 abuts against the end surface of the stator core 10, and the special-shaped adapting metal piece 30 is connected with one end of the insertion section 22, which is far away from the connection section 21. Specifically, this square copper line 20 includes linkage segment 21 and two grafting sections 22, can be so that two grafting sections 22 bend respectively with the help of the mould shaping and connect in the relative both ends of linkage segment 21, square copper line 20 can be the setting of U type promptly, so insert through opening 12 department with two grafting sections 22 follow two adjacent wire casing 11 respectively, thereby make the linkage segment 21 of square copper line 20 can directly butt stator core 10 axial ascending terminal surface department, and connect the grafting section 22 of a dysmorphism switching metalwork 30 in two square copper lines 20 and deviate from the one end of linkage segment 21, so in order to realize the fixed of many square copper lines 20. It should be noted that the square copper wire 20 may be directly disposed, so that the special-shaped adapting metal piece 30 connected to both ends of the square copper wire 20 may also be used to mount and fix a plurality of square copper wires 20, which may be specifically selected by those skilled in the art.

Further, the connecting sections 21 of the plurality of square copper wires 20 are located on the same axial end surface of the stator core 10, and the inserting sections 22 of the plurality of square copper wires 20 penetrate through the end surface of the stator core 10 departing from the connecting sections 21. Specifically, the linkage segment 21 through making many square copper wires 20 all is located stator core 10 same terminal surface of axial ascending, and make the grafting section 22 of many square copper wires 20 all pass the terminal surface that stator core 10 deviates from linkage segment 21, so that all dysmorphism switching metalwork 30 all are located same end of stator core 10, so in order that operating personnel installs or dismantles a plurality of dysmorphism switching metalwork 30 from same terminal surface of stator core 10, it is more convenient to operate, improve a plurality of dysmorphism switching metalwork 30 early stage installation effectiveness and later maintenance efficiency.

Furthermore, a step surface 221 is formed at an end of the plug section 22 away from the connecting section 21 for abutting and limiting an end of the special-shaped adapter metal piece 30. Wherein, this side's copper line 20 grafting section 22 deviates from the one end of linkage segment 21 and is formed with step face 221, can place the both ends of dysmorphism switching metalwork 30 respectively after step face 221 earlier when so operating personnel installs and weld steadily, so in order to further improve the accuracy of the installation of dysmorphism switching metalwork 30 and reduce the operation difficulty, and then guarantee the stability after the installation of dysmorphism switching metalwork 30, and improved the installation effectiveness.

The present invention further provides a motor, which includes a stator assembly 100, and the specific structure of the stator assembly 100 refers to the above embodiments, and since the motor adopts all technical solutions of all the above embodiments, the motor at least has all beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A stator assembly, comprising:

2. The stator assembly according to claim 1, wherein a plurality of said square copper wires are at least partially inserted through the openings of said slots and located on the same axial end surface of said stator core, and opposite ends of one of said shaped transition metal members are respectively connected to ends of two of said square copper wires located on the same axial end surface of said stator core.

3. The stator assembly according to claim 2, wherein the shaped transition metal member is in the form of an elongated plate, and two ends of the shaped transition metal member are respectively connected to two adjacent square copper wire connections.

4. The stator assembly according to claim 2, wherein the special-shaped switching metal piece is rectangular, two mounting through holes are formed in the special-shaped switching metal piece at intervals, and one end of each of two adjacent square copper wires penetrates through one of the mounting through holes of the special-shaped switching metal piece.

5. The stator assembly according to claim 2, wherein the special-shaped transition metal piece comprises two fixed sections and an avoiding section, and the two fixed sections are respectively connected with two ends of the avoiding section in a bending way;

6. The stator assembly of claim 1, wherein the material of the shaped transition metal piece is copper;

7. The stator assembly according to any one of claims 1 to 6, wherein the square copper wire comprises a connecting section and two insertion sections, and the two insertion sections are respectively connected to two opposite ends of the connecting section in a bent manner;

8. The stator assembly according to claim 7, wherein the connecting sections of the square copper wires are located on the same end face of the stator core in the axial direction, and the inserting sections of the square copper wires penetrate through the end face of the stator core, which is away from the connecting sections.

9. The stator assembly according to claim 8, wherein a step surface is formed at one end of the inserting section, which is far away from the connecting section, so as to be used for abutting and limiting one end of the special-shaped adapting metal piece.

10. An electrical machine comprising a stator assembly according to any one of claims 1 to 9.