A motor stator and a motor

Abstract

The utility model discloses a motor stator and motor relates to motor technical field, motor stator, including coil winding, be annular arrangement, end disc subassembly, including fixed disc, along stator axle side connection coil winding, A phase busbar, place in fixed disc side away from coil winding, B phase busbar, including first section and second section, wherein second section and A phase busbar along stator axial projection have overlap, C phase busbar, in stator axial projection direction, with A phase busbar and / or B phase busbar exist overlap, this motor stator and motor, through three -phase busbar's axial design, can adapt the motor stator / fixed disc of smaller radial dimension, A phase busbar, B phase busbar and C phase busbar's overlap design, can effectively adapt the motor stator / fixed disc of smaller circumferential dimension, to overcome the space limitation, complete three -phase busbar's layout in limited space.

Description

Technical Field

[0001] This application relates to the field of motor technology, and more specifically, to a motor stator and a motor. Background Technology

[0002] The motor stator includes multiple sets of coil windings and a wiring section. The coil windings include coil supports and windings. The phase wire terminals of the multiple sets of coil windings (such as flat wires and round wires) need to be connected through the busbar of the wiring section to form a phase wire interface.

[0003] In the process of implementing this application, the applicant discovered the following problems with the prior art:

[0004] Firstly, in small-sized motor stators, the three-phase busbar is placed on the side of the coil winding shaft. Due to the need to connect the phase wire terminals of multiple coil windings, the size of the busbar cannot be arbitrarily reduced, making it difficult for the three-phase busbar to meet the spatial layout requirements for high-efficiency production.

[0005] Secondly, the phase line interface needs to be connected to the three-phase busbar and the common interface needs to be connected to the star point busbar. The assembly logic of the three-phase busbar and the star point busbar in the existing technology is relatively complicated, the manual assembly efficiency is low, and it is even more unfavorable to automated equipment.

[0006] In summary, how to solve the problem that the stator size and three-phase busbar size of small-sized motors cannot be proportionally reduced, resulting in the three-phase busbars being unable to meet the spatial layout requirements for high-efficiency production; and how to improve the overall assembly logic are problems that urgently need to be solved by those skilled in the art. Utility Model Content

[0007] In view of this, the purpose of this utility model is to provide a motor stator that realizes a reasonable structural layout of the A-phase busbar, B-phase busbar and C-phase busbar on a small-sized motor, simplifies the assembly logic of the three-phase busbar, and is more conducive to automated assembly.

[0008] Another objective of this utility model is to provide a motor including the above-mentioned motor stator, which has the same technical features and can solve the same technical problems.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An electric motor stator includes coil windings arranged in a ring about the stator shaft;

[0011] The motor stator further includes:

[0012] An end plate assembly includes a fixed plate connected to the coil winding at an end along the stator shaft;

[0013] Phase A busbar is located on the side of the fixed plate away from the coil winding;

[0014] The B-phase busbar includes a first section and a second section, wherein the second section at least partially overlaps with the A-phase busbar along the axial projection of the stator shaft.

[0015] The C-phase busbar, whose axial projection on the stator shaft at least partially overlaps with the A-phase busbar and / or the B-phase busbar.

[0016] Preferably, the endpad assembly further includes:

[0017] The A-phase positioning component is constructed on the fixed disk, and the A-phase positioning component has a groove in the radial direction of the stator shaft;

[0018] The B-phase positioning component and the C-phase positioning component are constructed on the fixed disk, and the B-phase positioning component and the C-phase positioning component are provided with slots along the axial direction of the stator shaft.

[0019] Preferably, the B-phase positioning component includes a B-phase buckle and a B-phase wire groove;

[0020] The C-phase positioning component includes:

[0021] The C-phase buckle and the boss are constructed on the fixed plate. The boss forms a C-phase wire groove (1421). The boss supports at least a portion of the C-phase busbar to form a height difference with the A-phase busbar and / or the B-phase busbar.

[0022] Preferably, the A-phase busbar and the C-phase busbar are planar arc-shaped, and the first section of the A-phase busbar and the B-phase busbar are located on the same plane.

[0023] Preferably, the coil winding includes a coil frame, and the outer ring of the coil frame is provided with a flange, and the flange is formed with a notch;

[0024] The fixed plate has a column base on the side near the coil winding, and the column base matches the shape of the notch.

[0025] Preferably, the motor stator further includes a star-point array, which is connected to the common terminal of the coil winding;

[0026] An outer protective plate is constructed at the flange location, and a bearing surface is formed between the outer protective plate and the flange, with the star-shaped array assembled on the bearing surface.

[0027] Preferably, the inner ring of the fixed disk is further provided with a positioning hole, and the coil frame is constructed with a positioning post, wherein the positioning hole and the positioning post are matched in shape.

[0028] Preferably, the A-phase bus, the B-phase bus, and the C-phase bus all have terminals for connecting the phase wire terminals of the coil winding.

[0029] Preferably, the fixing plate is further provided with perforated holes at the positions where the A-phase busbar, the B-phase busbar, and the C-phase busbar are installed.

[0030] An electric motor comprising the motor stator described in any one of the preceding claims.

[0031] The motor stator provided by this utility model has at least the following advantages compared with the prior art:

[0032] 1. Through the axial design of the three-phase busbar, it can be adapted to motor stators / fixed disks with smaller radial dimensions. The overlapping design of the A-phase busbar, B-phase busbar and C-phase busbar can effectively adapt to motor stators / fixed disks with smaller circumferential dimensions, thereby overcoming space limitations and completing the layout of the three-phase busbar in a limited space.

[0033] 2. The A-phase bus is assembled radially from the side of the fixed plate along the motor stator. After welding to the phase wire terminals, the A-phase bus maintains a secure position. The B-phase and C-phase buses are pressed downwards sequentially along the axial direction of the motor stator to secure their respective positions. This logic effectively controls the number of positioning components on the upper surface of the fixed plate, improving space utilization and facilitating the adaptation to smaller end plates. Furthermore, this assembly logic is simple and orderly, improving manual assembly efficiency and facilitating the process design of automated processing equipment.

[0034] 3. Through this structural design, the coil frame is integrally formed with slots for assembling the star-point array, which enables workers to assemble the star-point array without distinguishing the assembly position. Only the welding position of the star-point array needs to be aligned with the common terminal of the winding. No other alignment work is required, which can reduce manual assembly steps and is more conducive to automated assembly design logic and assembly efficiency.

[0035] The motor provided by this utility model includes the motor stator described above and has the same beneficial effects. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0037] Figure 1A schematic diagram of the structure of the motor stator provided in this application;

[0038] Figure 2 This is a partial structural diagram of this application;

[0039] Figure 3 This is a schematic diagram of the structure of the fixed disk in this application;

[0040] Figure 4 For this application Figure 2 An explosion diagram;

[0041] Figure 5 This is a partial structural diagram of the coil frame in this application.

[0042] In the picture:

[0043] 100. End plate assembly; 110. Fixing plate; 111. Positioning hole; 112. Hole; 120. Phase A positioning component; 130. Phase B positioning component; 131. Phase B latch; 132. Phase B cable groove; 133. Protruding edge; 140. Phase C positioning component; 141. Phase C latch; 142. Boss; 1421. Phase C cable groove; 115. Column foot;

[0044] 210. Phase A busbar; 220. Phase B busbar; 221. First section; 222. Second section; 230. Phase C busbar; 240. Terminal block;

[0045] 300. Coil winding; 310. Coil frame; 311. Flange; 312. Outer sheath; 313. Bearing surface; 314. Positioning post; 315. Notch; 320. Winding wire; 321. Phase wire terminal; 322. Common terminal;

[0046] 400, Star-shaped arrangement. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] The purpose of this utility model is to provide a motor stator that achieves a reasonable structural layout of the A-phase busbar 210, B-phase busbar 220 and C-phase busbar 230 on a small-sized motor, simplifies the assembly logic of the three-phase busbar, and is more conducive to automated assembly.

[0049] Another objective of this invention is to provide a motor that includes the aforementioned motor stator, has the same technical features, and can solve the same technical problems.

[0050] An electric motor stator includes coil windings 300 arranged in a ring, comprising: an end plate assembly 100 including a fixed plate 110 connected to the coil windings 300 along the stator axial side; an A-phase bus 210 disposed on the side of the fixed plate 110 away from the coil windings 300; a B-phase bus 220 including a first section 221 and a second section 222, wherein the second section 222 overlaps with the A-phase bus 210 in the stator axial projection direction; and a C-phase bus 230 overlapping with the A-phase bus 210 and / or the B-phase bus 220 in the stator axial projection direction.

[0051] Phase A bus 210, Phase B bus 220 and Phase C bus 230 each have terminals 240 for connecting the phase wire terminals 321 of the coil winding 300.

[0052] Phase A busbar 210 and Phase C busbar 230 are planar arc-shaped, and the first section 221 of Phase A busbar 210 and Phase B busbar 220 are located on the same plane.

[0053] Specifically, such as Figure 1 As shown, the motor stator includes multiple coil windings 300 arranged in a ring. On the upper side of the coil windings 300, that is, on the axial upper side of the motor stator, the coil windings 300 are connected to a fixing plate 110, which is used to assemble a three-phase busbar.

[0054] A single coil winding 300 includes a coil frame 310, a magnet and a winding 320. The two ends of the winding 320 are a phase line terminal 321 and a common terminal 322, respectively. The phase line terminal 321 is connected to the terminal 240 of the three-phase busbar, and the common terminal 322 is connected to the star busbar 400.

[0055] like Figure 2 As shown, the three-phase busbars are fixed on the upper side of the fixed plate 110, with the A-phase busbar 210 attached to the fixed plate 110 and located at the bottom of the three-phase busbars. The A-phase busbar 210 is flat and arc-shaped, corresponding to the shape of the fixed plate 110.

[0056] like Figure 2As shown, the B-phase busbar 220 includes a first section 221 and a second section 222. The first section 221 is fixed to the fixed plate 110, and it is located on the same plane as the A-phase busbar 210. The first section 221 and the second section 222 are integrated through an inclined transition section, meaning that the B-phase busbar 220 is a flat metal plate with one end higher. In the axial projection of the stator shaft, part of the second section 222 overlaps with the A-phase busbar 210. Through the structural design of the B-phase busbar 220 with a height difference, the fitting space between the A-phase busbar 210 and the B-phase busbar 220 can be reduced, making it suitable for small-sized motor stators.

[0057] like Figure 2 As shown, the C-phase busbar 230 is a planar arc shape, mounted on the fixed plate 110, and is higher than the A-phase busbar 210 and the B-phase busbar 220 near the C-phase busbar 230, offset from them. In the axial projection of the motor stator, the C-phase busbar 230 overlaps with the ends of the A-phase busbar 210 and the B-phase busbar 220.

[0058] In some embodiments, the C-phase bus 230 may overlap with the A-phase bus 210 or the B-phase bus 220 in the axial projection of the motor stator.

[0059] In some embodiments, the C-phase busbar 230 can be similar to the B-phase busbar 220, having a structure with a height difference. Specifically, the middle section is attached to the fixed plate 110, and the sections near the A-phase busbar 210 and the B-phase busbar 220 form a height difference through inclined sections.

[0060] In this solution, the axial design of the three-phase busbars can accommodate the motor stator / fixed plate 110 with a smaller radial dimension. The overlapping design of the A-phase busbar 210, B-phase busbar 220 and C-phase busbar 230 can effectively accommodate the motor stator / fixed plate 110 with a smaller circumferential dimension, thereby overcoming space limitations and completing the layout of the three-phase busbars in a limited space.

[0061] The end plate assembly 100 also includes: an A-phase positioning member 120 constructed on the fixed plate 110, the A-phase positioning member 120 having a slot in the radial direction of the stator shaft; a B-phase positioning member 130 and a C-phase positioning member 140 constructed on the fixed plate 110, the B-phase positioning member 130 and the C-phase positioning member 140 having slots along the axial direction of the motor stator.

[0062] The B-phase positioning component 130 includes a B-phase latch 131 and a B-phase cable groove 132; the C-phase positioning component 140 includes a C-phase latch 141 and a boss 142, the boss 142 being constructed on the fixed plate 110, the boss 142 forming a C-phase cable groove 1421, the boss 142 supporting the C-phase busbar 230 to at least partially form a height difference with the A-phase busbar 210 and / or the B-phase busbar 220.

[0063] Specifically, such as Figure 3 As shown, an A-phase positioning component 120 is provided on the fixed disk 110. The A-phase positioning component 120 has an L-shaped structure and forms a slot with the fixed disk 110. The slot is arranged radially outward along the stator. There are three A-phase positioning components 120. At the position of each A-phase positioning component 120, the fixed disk 110 is provided with a hollow hole 112.

[0064] like Figure 3 As shown, the B-phase positioning component 130 includes three B-phase latches 131 disposed on the fixing plate 110. One of the B-phase latches 131 is positioned higher and located near the A-phase busbar 210, used to engage the second section 222. The B-phase positioning component 130 also includes two arc-shaped protrusions 133, which form B-phase grooves 132 for positioning the B-phase busbar 220. At each B-phase positioning component 130 location, the fixing plate 110 has a perforated hole 112.

[0065] like Figure 3 As shown, the openings of both the B-phase slot 132 and the B-phase buckle 131 are arranged upwards along the motor stator axis.

[0066] like Figure 3 As shown, the fixed disk 110 also has a boss 142, on which a C-phase wire groove 1421 is formed, so that the C-phase busbar 230 is higher than the A-phase busbar 210 and the B-phase busbar 220 in the axial direction of the motor stator. The C-phase buckle 141 is configured to cooperate with the boss 142, and the fixed disk 110 has a hollow hole 112 at each C-phase positioning part 140 position.

[0067] like Figure 4 As shown, phase A bus 210 is assembled radially from the side of the fixed plate 110 along the motor stator. Phase A bus 210 can maintain a good position after being welded to the phase wire terminal 321. Phase B bus 220 and phase C bus 230 are pressed downwards sequentially along the axial direction of the motor stator to position them respectively. This logic effectively controls the number of positioning parts on the upper surface of the fixed plate 110, improves the space utilization on the upper side of the fixed plate 110, and more effectively adapts to small-sized end plates. Furthermore, this assembly logic is relatively simple and orderly, which is beneficial for improving manual assembly efficiency and facilitating the process design of automated processing equipment.

[0068] The coil winding 300 includes a coil frame 310, with a flange 311 formed on the outer ring of the coil frame 310, and a notch 315 formed on the flange 311; the fixing plate 110 has a column base 115 on the side near the coil winding 300, and the column base 115 matches the shape of the notch 315.

[0069] Specifically, such as Figure 5 As shown, the outer side of the coil frame 310 has two symmetrical flanges 311, and a notch 315 is formed between the two flanges 311. Figure 1 Multiple flanges 311 and notches 315 are arranged in a ring.

[0070] like Figure 2 As shown, the lower side of the fixing plate 110 has a plurality of columns 115 arranged in a circle. The columns 115 can be inserted into the notches between the flanges 311, thereby assembling the fixing plate 110 onto the coil winding 300.

[0071] It also includes a star-shaped array 400, which connects to the common terminal 322 of the coil winding 300; an outer protective plate 312 is constructed at the flange 311 of the coil frame 310, and a bearing surface 313 is formed between the outer protective plate 312 and the flange 311, and the star-shaped array 400 is assembled on the bearing surface 313.

[0072] Specifically, such as Figure 5 As shown, the coil frame 310 is also constructed with an outer protective plate 312. The outer protective plate 312 is located on the outer ring of the flange 311. A groove is formed between the outer protective plate 312 and the flange 311. The groove has a bearing surface 313. In the motor stator, multiple coil frames 310 can be combined to form an annular groove for assembling the star array 400.

[0073] With this structural design, the coil bobbin 310 is integrally formed with a slot for assembling the star-point array 400, which enables workers to assemble the star-point array 400 without distinguishing the assembly position. It is only necessary to align the welding position of the star-point array 400 with the common terminal 322 of the winding 320. No other alignment work is required, which can reduce manual assembly steps and is more conducive to automated assembly design logic and assembly efficiency.

[0074] The inner ring of the fixed plate 110 is also provided with a positioning hole 111, and the coil frame 310 is constructed with a positioning post 314, with the positioning hole 111 matching the shape of the positioning post 314.

[0075] Combination Figure 2 and Figure 5The inner ring of the fixed plate 110 is provided with multiple positioning holes 111, and the inner side of the coil frame 310 is constructed with multiple positioning posts 314. The positioning posts 314 are inserted into the positioning holes 111. Combined with the cooperation of the post foot 115 and the notch 315, the assembly stability of the fixed plate 110 and the coil winding 300 is further improved.

[0076] In addition to the motor stator disclosed in the above embodiments, this utility model also provides a motor including the above-mentioned motor stator. For the structure of other parts of the motor, please refer to the prior art, which will not be repeated here.

[0077] The present invention provides a detailed description of a motor stator and a motor. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of these embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A motor stator, comprising coil windings (300) arranged in a ring about the stator shaft, characterized in that, Also includes: The end plate assembly (100) includes a fixed plate (110) which is connected to the coil winding (300) at the end of the stator shaft. Phase A busbar (210) is placed on the side of the fixed plate (110) away from the coil winding (300); The B-phase busbar (220) includes a first section (221) and a second section (222), wherein the second section (222) at least partially overlaps with the A-phase busbar (210) along the axial projection of the stator shaft; The C-phase busbar (230), whose axial projection on the stator shaft at least partially overlaps with the A-phase busbar (210) and / or the B-phase busbar (220).

2. The motor stator according to claim 1, characterized in that, The end panel assembly (100) also includes: An A-phase positioning member (120) is constructed on the fixed disk (110), and the A-phase positioning member (120) has a slot in the radial direction of the stator shaft; The B-phase positioning member (130) and the C-phase positioning member (140) are constructed on the fixed disk (110), and the B-phase positioning member (130) and the C-phase positioning member (140) are provided with slots along the axial direction of the stator shaft.

3. The motor stator according to claim 2, characterized in that, The B-phase positioning component (130) includes a B-phase buckle (131) and a B-phase wire groove (132). The C-phase positioning element (140) includes: The C-phase latch (141) and the boss (142) are constructed on the fixed plate (110). The boss (142) forms a C-phase wire groove (1421). The boss (142) supports at least a portion of the C-phase bus (230) to form a height difference with the A-phase bus (210) and / or the B-phase bus (220).

4. The motor stator according to claim 3, characterized in that, The A-phase busbar (210) and the C-phase busbar (230) are planar arc-shaped, and the first section (221) of the A-phase busbar (210) and the B-phase busbar (220) are located on the same plane.

5. The motor stator according to claim 1, characterized in that, The coil winding (300) includes a coil frame (310), and the outer ring of the coil frame (310) is provided with a flange (311), and the flange (311) is provided with a notch (315). The fixed plate (110) has a column base (115) on the side near the coil winding (300), and the column base (115) matches the shape of the notch (315).

6. The motor stator according to claim 5, characterized in that, It also includes a star-shaped array (400) that connects to the common terminal (322) of the coil winding (300). An outer protective plate (312) is constructed at the flange (311), and a bearing surface (313) is formed between the outer protective plate (312) and the flange (311), and the star-shaped array (400) is assembled on the bearing surface (313).

7. The motor stator according to claim 6, characterized in that, The inner ring of the fixed plate (110) is also provided with a positioning hole (111), and the coil frame (310) is constructed with a positioning post (314), and the positioning hole (111) and the positioning post (314) are matched in shape.

8. The motor stator according to any one of claims 1-7, characterized in that, The A-phase bus (210), the B-phase bus (220) and the C-phase bus (230) each have a terminal (240) for connecting the phase wire terminal (321) of the coil winding (300).

9. The motor stator according to claim 8, characterized in that, The fixed plate (110) is also provided with a hollow hole (112) at the position where the A-phase busbar (210), the B-phase busbar (220) and the C-phase busbar (230) are installed.

10. An electric motor, characterized in that, Includes the motor stator as described in any one of claims 1-9.

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