CN213661300U

CN213661300U - Stator assembly and motor

Info

Publication number: CN213661300U
Application number: CN202022635453.5U
Authority: CN
Inventors: 齐文明; 鲁浩; 游斌
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-07-09
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses a stator assembly and a motor, wherein the stator assembly comprises a stator core, a stator winding and m annular first metal pieces, the stator winding is arranged on the stator core, and the stator winding is provided with m multiplied by n leading-out ends; and a plurality of leading-out ends of the same phase are respectively and electrically connected with one corresponding first metal piece. The utility model discloses a stator module, through setting up the end of drawing forth of m looks with m first metalworks one-to-one respectively, a plurality of ends of drawing forth of same looks are connected with a corresponding first metalwork electricity respectively, can realize that a plurality of ends of drawing forth all are connected with outside motor controller electricity, and then make stator module and outside motor controller electricity connect, the utility model discloses a stator module spare part is few, simple structure, easily processing; moreover, raw materials and cost can be saved; and further mass production can be facilitated.

Description

Stator assembly and motor

Technical Field

The utility model belongs to the technical field of the motor technique and specifically relates to a stator module and motor are related to.

Background

In motor technical field, most lead-out wire connected mode, the structure is very complicated, and the part that uses is more, and complicated structure has increased the processing degree of difficulty, leads to the processing cost height, extravagant material is more, also does not benefit to batch production simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model provides a stator module, stator module has the advantage of simple structure, easily processing.

The utility model provides a motor, motor have as above stator module.

According to the utility model discloses stator module, stator module is applicable to m looks, every looks has the motor of n branch circuits that connect in parallel, stator module includes stator core, stator winding and m annular first metalworks, stator winding establishes on stator core, stator winding has mxn and draws forth the end; and the leading-out ends of the same phase are electrically connected with one corresponding first metal piece respectively.

According to the stator assembly provided by the embodiment of the utility model, the leading-out ends of the m phases are respectively arranged in one-to-one correspondence with the m first metal parts, and the leading-out ends of the same phase are respectively electrically connected with the corresponding one first metal part, so that the leading-out ends are all electrically connected with an external motor controller, and further the stator assembly is electrically connected with the external motor controller; moreover, raw materials and cost can be saved; and further mass production can be facilitated.

In some embodiments, each of the first metal pieces is provided with n first protruding portions, and the same corresponding n leading-out terminals are respectively connected with the n first protruding portions in a one-to-one correspondence manner.

In some embodiments, the first protrusion extends in an axial direction of the first metal piece.

In some embodiments, the first protrusions on a plurality of the first metal pieces are circumferentially spaced apart.

In some embodiments, the first protrusions on the first metal pieces are evenly spaced in the circumferential direction.

In some embodiments, each of the first metal pieces is provided with a second protruding portion, and the second protruding portion is suitable for being connected with an external motor controller.

In some embodiments, the second boss has a boss height greater than a boss height of the first boss in an axial direction of the first metal piece.

In some embodiments, in the circumferential direction of the first metal piece, the width of the second convex portion is greater than or equal to the sum of the widths of the n first convex portions on the same first metal piece.

In some embodiments, the first metal pieces are sequentially sleeved and arranged at intervals.

The first metal piece and the leading-out end are arranged on the axial outer side of the stator winding.

In some embodiments, the stator winding further has m × n star point terminals, and the stator assembly further includes a second metal piece having a ring shape, and the m × n star point terminals are electrically connected to the second metal piece, respectively.

According to the utility model discloses motor, including as above-mentioned stator module.

According to the motor provided by the embodiment of the utility model, the leading-out ends of the m phases are respectively arranged in one-to-one correspondence with the m first metal parts, and the leading-out ends of the same phase are respectively electrically connected with the corresponding one first metal part, so that the leading-out ends are all electrically connected with an external motor controller, and further the stator assembly is electrically connected with the external motor controller; moreover, raw materials and cost can be saved; and further mass production can be facilitated.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

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

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic view of a partial structure of a stator assembly according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at B;

figure 5 is a structural schematic diagram of another angle of a stator assembly according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first metal part according to an embodiment of the present invention.

Reference numerals:

the stator assembly 100 is provided with,

the stator core 1 is provided with a stator core,

stator winding 2, lead-out terminal 21, star point terminal 22,

the first metal piece 3, the first convex portion 31, the second convex portion 32,

a second metal piece 4 and a third convex part 41.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A stator assembly 100 and a motor according to an embodiment of the present invention are described below with reference to the accompanying drawings. The motor can be m-phase motor with n parallel branches in each phase.

As shown in fig. 1-2, the stator assembly 100 according to the embodiment of the present invention includes a stator core 1, a stator winding 2 and m annular first metal members 3, for example, the stator winding 2 may include a hairpin end and a weld end, which are respectively disposed at two axial sides of the stator core 1.

Specifically, referring to fig. 1-2, a stator winding 2 is provided on a stator core 1, the stator winding 2 having m × n outlet terminals 21; the plurality of terminals 21 of the same phase are electrically connected to a corresponding one of the first metal members 3. Alternatively, each first metal piece 3 may be a copper piece, thereby reducing costs.

It can be understood that, stator core 1 can support stator winding 2, is convenient for winding stator winding 2, and m annular first metalwork 3 can be connected with m looks leading-out terminal 21 electricity respectively, and each is connected a first metalwork 3, and first metalwork 3 is suitable for and is connected with outside machine controller electricity, and from this, through first metalwork 3, can all be connected with outside machine controller electricity with a plurality of leading-out terminals 21 of each looks, and then make stator module 100 and outside machine controller electricity be connected. Thus, the integrity of the electrical structure can be ensured. In some embodiments, the first metal part 3 and the leading-out terminal 21 are both axially outside the stator winding 2, and specifically, the first metal part 3 and the leading-out terminal 21 are both axially outside the welding terminal, so that interference between the first metal part 3 and the stator winding 2 and interference between the welding positions of the first metal part 3 and the leading-out terminal 21 and the stator winding 2 are avoided, and thus a circuit fault caused by that a part of the leading-out terminal 21 is not connected with the first metal part 3 can be avoided, where the part of the leading-out terminal 21 may be one leading-out terminal 21 or may be multiple leading-out terminals 21.

In the related technology, most outgoing lines are connected with a motor controller, the structure is very complex, more parts are used, the complex structure increases the processing difficulty, the processing cost is high, more materials are wasted, and batch production is not facilitated; in addition, most of the motor stator windings have short distances of a plurality of leading-out ends of each phase, and a structure for connecting the leading-out ends is not needed to be designed independently, but the leading-out ends of each phase of the stator windings are far distances, so that the leading-out ends are difficult to be connected by using a connection mode in the prior art.

According to the embodiment of the present invention, the stator assembly 100 is provided with the m-phase leading-out ends 21 respectively corresponding to the m first metal members 3 one-to-one, and the leading-out ends 21 of the same phase are electrically connected to the corresponding first metal members 3 respectively, so that the leading-out ends 21 are electrically connected to the external motor controller, and further the stator assembly 100 is electrically connected to the external motor controller, the stator assembly 100 of the present invention has fewer parts, simple structure and easy processing; moreover, raw materials and cost can be saved; thereby being convenient for mass production; the motor has good reliability.

In some embodiments of the present invention, referring to fig. 1-2, the same corresponding n leading-out terminals 21 are far away and need to be connected in series through a metal member, n first protruding portions 31 are provided on each first metal member 3, the same corresponding n leading-out terminals 21 are respectively connected with the n first protruding portions 31 in a one-to-one correspondence, therefore, each leading-out terminal 21 of the same phase can be connected with the corresponding first bulge 31, the first bulge 31 can be better matched with the leading-out terminal 21, the connection area of the first metal piece 3 and the leading-out terminal 21 is increased, the connection of the first metal piece 3 and the leading-out terminal 21 is more reliable, meanwhile, the contact area of the first protruding part 31 and each leading-out terminal 21 is uniform, so that the connection between the first metal piece 3 and the leading-out terminal 21 is firmer, the local overheating phenomenon is reduced, and the probability of motor circuit faults can also be reduced.

Further, as shown in fig. 1-2, the first protrusion 31 extends along the axial direction of the first metal part 3, and since the leading-out terminal 21 of the stator winding 2 extends along the axial direction, the first protrusion 31 extends along the axial direction of the first metal part 3 to better match with the leading-out terminal 21, so that the connection between the first protrusion 31 and the leading-out terminal 21 is more reliable.

According to some embodiments of the present invention, each first protruding portion 31 and the corresponding leading-out terminal 21 can be welded, and thus, the reliability of the connection between the first protruding portion 31 and the leading-out terminal 21 can be enhanced, so that the probability of the circuit failure of the stator assembly 100 caused by the disconnection between the first protruding portion 31 and the leading-out terminal 21 can be reduced. The first metal piece 3 is provided with the first protruding portion 31, so that the welding area of the first metal piece 3 and the leading-out terminal 21 can be increased, the first metal piece 3 and the leading-out terminal 21 can be welded conveniently, and meanwhile the reliability of welding of the first metal piece 3 and the leading-out terminal 21 can be guaranteed.

In some embodiments of the present invention, as shown in fig. 3 to 4, the first protruding portions 31 on the plurality of first metal members 3 are circumferentially spaced, and since the leading ends 21 of the stator winding 2 are circumferentially spaced along the stator core 1, the first protruding portions 31 on the plurality of first metal members 3 are circumferentially spaced to adapt to the distribution of m × n leading ends 21, so that each first protruding portion 31 is electrically connected with the corresponding leading end 21.

Further, the first protrusions 31 on the plurality of first metal pieces 3 are arranged at even intervals in the circumferential direction. Because the leading-out terminals 21 of the stator winding 2 are uniformly arranged at intervals along the circumferential direction of the stator core 1, the first protruding parts 31 on the plurality of first metal pieces 3 are uniformly arranged at intervals in the circumferential direction to adapt to the distribution of m × n leading-out terminals 21, so that each first protruding part 31 is conveniently and electrically connected with the corresponding leading-out terminal 21. Moreover, the first protrusions 31 are uniformly spaced to facilitate processing.

According to some embodiments of the present invention, as shown in fig. 1-2, each first metal piece 3 is provided with a second protruding portion 32, and the second protruding portion 32 is suitable for being connected with an external motor controller. It can be understood that the second protrusion portion 32 can facilitate the connection of the first metal part 3 with an external motor controller, and thus, through the first protrusion portion 31, the first metal part 3 can be electrically connected with the leading-out terminal 21, and through the second protrusion portion 32, the first metal part 3 can be electrically connected with the external motor controller, so as to achieve the electrical connection of the leading-out terminal 21 with the external motor controller, and further, to electrically connect the stator assembly 100 with the external motor controller.

In some embodiments of the present invention, referring to fig. 2, in the axial direction of the first metal piece 3, the protrusion height of the second protrusion 32 is greater than the protrusion height of the first protrusion 31. Since the second protruding portion 32 is to be electrically connected to an external motor controller, the protruding height of the second protruding portion 32 is greater than the protruding height of the first protruding portion 31, so that the second protruding portion 32 can be conveniently connected to the external motor controller, and the first protruding portion 31 is prevented from interfering with the external motor controller.

In some embodiments of the present invention, referring to fig. 2 and 6, in the circumferential direction of the first metal part 3, the width of the second protruding portion 32 is greater than or equal to the sum of the widths of the n first protruding portions 31 on the same first metal part 3, so that the second protruding portion 32 can be prevented from being locally overheated.

According to some embodiments of the utility model, combine fig. 3-5, a plurality of first metalworks 3 overlap in proper order and establish and the interval sets up, from this, can be so that mutually noninterfere between per two first metalworks 3, and mutual insulation, can reduce a plurality of first metalworks 3 simultaneously and occupy stator module 100's axial space. Further, a plurality of first metalworks 3 are all the naked electric conductor that does not take the paint film, in order to guarantee that first metalwork 3 is insulating with stator winding 2, need to carry out insulating coating to stator winding 2 near the one end of first metalwork 3 and handle, a plurality of first metalworks 3 overlap in proper order and establish and the interval sets up and can have sufficient coating powder to dip in the space, furthermore, at least 2.5mm of interval between per two first metalworks 3, therefore, can guarantee insulating coating interval further, guarantee that the coating powder can fully dip in stator winding 2.

In some embodiments of the present invention, with reference to fig. 1-2, the stator winding 2 further has m × n star point line ends 22, the stator assembly 100 further includes an annular second metal member 4, and the m × n star point line ends 22 are electrically connected to the second metal member 4 respectively. The second metal piece 4 may connect the m × n star point terminals 22 together, such that the electrical connection of the stator assembly 100 is star connection, the second metal piece 4 may be a center of the star connection, and the annular second metal piece 4 may facilitate connection of the m × n star point terminals 22 arranged at intervals in the circumferential direction of the stator core 1 to the second metal piece 4. Further, referring to fig. 1-2, the second metal part 4 may be provided with a plurality of circumferentially spaced third protruding portions 41, the third protruding portions 41 are adapted to be electrically connected to the star point terminals 22, the number of the third protruding portions 41 may be m × n, each third protruding portion 41 corresponds to one star point terminal 22, the number of the third protruding portions 41 may also be less than m × n, and a part of the m × n star point terminals 22 is correspondingly connected to one third protruding portion 41 until the m × n star point terminals 22 are all connected to the third protruding portions 41. Alternatively, the second metal piece 4 may be a copper piece, so that the cost can be reduced.

It can be understood that the third protrusion 41 can increase the connection area between the second metal part 4 and the star point line end 22, so that the connection between the second metal part 4 and the star point line end 22 is more reliable, and meanwhile, the contact area between the third protrusion 41 and each star point line end 22 is uniform, so that the connection between the second metal part 4 and the star point line end 22 is further firmer, the local overheating phenomenon is reduced, and the probability of the motor circuit fault can also be reduced.

Further, as shown in fig. 1-2, the third protrusion 41 extends along the axial direction of the second metal part 4, and since the star point terminal 22 of the stator winding 2 extends along the axial direction, the extension of the third protrusion 41 along the axial direction of the second metal part 4 can better match the star point terminal 22, so that the connection between the third protrusion 41 and the star point terminal 22 is more reliable.

According to some embodiments of the present invention, each third lobe 41 and the corresponding star point line end 22 can be welded, and thus, the reliability of the connection of the third lobe 41 and the star point line end 22 can be enhanced, so that the probability of the circuit failure of the stator assembly 100 caused by the disengagement of the third lobe 41 and the star point line end 22 can be reduced. The third protrusion 41 is disposed on the second metal part 4, so that the welding area between the second metal part 4 and the star point line end 22 can be increased, and the reliability of welding between the second metal part 4 and the star point line end 22 can be ensured while the second metal part 4 is welded to the star point line end 22.

According to the utility model discloses a some embodiments, first metalwork 3 and second metalwork 4 all can adopt stamping die to make, and simple structure is suitable for carrying out batch production. After the first metal piece 3 and the second metal piece 4 are manufactured, under clamping of a relevant welding auxiliary tool, TIG welding is carried out on a plurality of first metal pieces 3 and m multiplied by n leading-out ends 21 of m-phase n paths, TIG welding is carried out on a plurality of second metal pieces 4 and m multiplied by n star point line ends 22 of m-phase n paths, and welding spots of the metal pieces are guaranteed to be moderate in size and full and smooth.

The motor according to the embodiment of the present invention includes the stator assembly 100 as described above.

According to the embodiment of the utility model, through setting up the leading-out ends 21 of m looks with m first metalworks 3 one-to-one respectively, a plurality of leading-out ends 21 of the same looks are connected with a corresponding first metalwork 3 electricity respectively, can realize that a plurality of leading-out ends 21 all are connected with the outside motor controller electricity, and then make stator module 100 be connected with the outside motor controller electricity, the utility model discloses a stator module 100 spare part is few, simple structure, easily processing; moreover, raw materials and cost can be saved; and further mass production can be facilitated.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A stator assembly for an m-phase electric machine having n parallel legs per phase, the stator assembly comprising:

a stator core;

the stator winding is arranged on the stator iron core and provided with m multiplied by n leading-out ends;

the leading-out ends of the m annular first metal pieces are electrically connected with one corresponding first metal piece respectively.

2. The stator assembly of claim 1, wherein each of the first metal members is provided with n first protruding portions, and the n corresponding leading-out terminals are respectively connected with the n first protruding portions in a one-to-one correspondence.

3. The stator assembly of claim 2, wherein the first lobe extends in an axial direction of the first metallic piece.

4. The stator assembly of claim 2 wherein the first lobes on the first metallic piece are circumferentially spaced.

5. The stator assembly of claim 4 wherein the first lobes on the first metallic piece are evenly circumferentially spaced.

6. The stator assembly of claim 2 wherein each of said first metallic pieces has a second lobe thereon, said second lobe adapted to be connected to an external motor controller.

7. The stator assembly of claim 6, wherein a lobe height of the second lobe is greater than a lobe height of the first lobe in an axial direction of the first metal piece.

8. The stator assembly of claim 6, wherein the width of the second lobe is greater than or equal to the sum of the widths of n first lobes on the same first metallic piece in the circumferential direction of the first metallic piece.

9. The stator assembly of claim 1, wherein the plurality of first metal pieces are sequentially sleeved and spaced apart.

10. The stator assembly of claim 1, wherein the first metal piece and the pigtail are both disposed axially outward of the stator windings.

11. The stator assembly of any of claims 1-10, wherein the stator winding further has m x n star point terminals, the stator assembly further comprising a second metallic piece in a ring shape, the m x n star point terminals being electrically connected to the second metallic piece, respectively.

12. An electrical machine comprising a stator assembly according to any of claims 1-11.