Conducting ring confluence type flat wire winding stator, motor and assembly process

Abstract

The invention relates to a conducting ring confluence type flat wire winding stator, a motor and an assembly process, the stator comprises a stator core and flat wire windings, a plurality of layers of flat wire windings are inserted in stator grooves of the stator core, and the conducting ring confluence type flat wire winding stator is characterized in that the flat wire windings comprise U-shaped flat wires; the stator further comprises conducting rings, the conducting rings are of a multi-layer coaxial ring structure, each layer of conducting ring is arranged between two adjacent layers of flat wire windings in the stator groove, connecting points are arranged on the conducting rings, the connecting points are paired in pairs and are electrically connected through the conducting rings, and the paired connecting points are connected with one ends of different U-shaped flat wires respectively. Compared with the prior art, the method has the advantages that the stator is only subjected to external expansion treatment without torsion treatment, key equipment investment and the risk of copper wire damage are reduced, and the like.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a conductive ring converging type flat wire winding stator, a motor and an assembly process. Background Art

[0002] Compared with traditional round wire motors, flat wire motors have the advantage of higher slot fill rate. However, due to the high difficulty of flat wire stator production process and the large investment in production line construction, there are urgent problems to be solved. Flat wire motor windings also have some defects: First, the flat wire motor windings are composed of a variety of Upin and Ipin flat copper wires. Since most flat wire stators have flat copper wires with different spans, the difference in linear spans causes the flat copper wires to be stacked together in the axial direction of the stator, increasing the height of the winding end; secondly, in order to achieve the circuit connection of the flat wire winding, each layer of the welding end of the flat wire stator needs to be twisted at a specific angle, but because the copper wire has a certain amount of rebound, it is difficult to reach the required position during the twisting process, which greatly tests the structure of the twisting equipment, resulting in complex movement of the twisting equipment and high price, which significantly increases the investment cost of the stator production line, and the UVW three-phase windings are close to each other at the welding end, which significantly reduces the insulation performance of the motor.

[0003] Conventional flat wire motors require the required flat copper wires to be bent into U-shape and I-shape, namely Upin wire and Ipin wire, and the Upin wire and Ipin wire are inserted into the stator core from the hairpin end, and then the flat copper wires are connected at the welding end of the stator core to achieve circuit conduction of each branch.

[0004] However, the flat wire stator winding is composed of a variety of rectangular flat copper wires with different spans and sizes. When the flat wire stator winding involves more types of wire types, the process of inserting the flat copper wire into the stator core is more complicated, and when any layer of the core has more than one type of Upin flat copper wire, the risk of inserting the copper wire incorrectly increases. Secondly, in order to achieve the connection of the winding circuit, the flat wire stator needs to be twisted at each layer of the welding end. However, due to the certain resilience of the copper wire itself, it is difficult to ensure that each copper wire can reach the ideal position after twisting, and as long as any copper wire at the welding end does not enter the equipment, it is very easy to cause the stator to be scrapped. It is necessary to invest high manpower costs to correct the torsion parameters. Moreover, when the torsion angle is large, it is almost impossible to twist to the required position according to the set procedure; in addition, the twisting of the copper wire at the welding end causes the UVW three-phase winding wires to cross each other, reducing the insulation performance of the winding. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art that the flat wire winding adopts many types of U-shaped flat wires, the risk of incorrect insertion of copper wires is relatively high, the welding ends of the flat copper wires are inconvenient to perform circumferential twisting processing, and the crossing of copper wires reduces the insulation performance of the winding, and to provide a conductive ring converging flat wire winding stator, motor and assembly process.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The present solution provides a conductive ring converging type flat wire winding stator, comprising a stator core and a flat wire winding, wherein multiple layers of flat wire windings are inserted into the stator slots of the stator core, and wherein the flat wire windings comprise U-shaped flat wires; the stator further comprises a conductive ring, wherein the conductive ring is a multi-layer coaxial ring structure, wherein each layer of the conductive ring is arranged between two adjacent layers of the flat wire windings in the stator slots, wherein connection points are arranged on the conductive ring, wherein the connection points are paired in pairs and electrically connected through the conductive ring, and wherein the paired connection points are respectively connected to one end of different U-shaped flat wires.

[0008] Preferably, the flat wire winding further includes an I-type flat copper wire, and the connection points of the conductive ring are connected to the I-type flat copper wire; the stator further includes a busbar, and the busbar is connected to the I-type flat copper wire.

[0009] Preferably, the conductive ring further comprises an annular insulating plate, the insulating plate is coated on the outer side of the conductive ring, and the connection point is located on the side wall of the insulating plate.

[0010] Preferably, the connection points are alternately distributed on both sides of the insulation plate.

[0011] Preferably, a stopper is provided between adjacent connection points on the insulating plate, the stopper is made of insulating material, and the stopper is arranged between two adjacent layers of U-shaped flat wires in the stator slot.

[0012] Preferably, a connecting plate is further provided on the conductive ring, and the connecting plate is arranged parallel to the stator slots. The connecting plate is fixed on the insulating plate and is located between adjacent stator slots.

[0013] Preferably, one end of the U-shaped flat wire close to the conductive ring is bent away from the axis of the stator core, the spacing between adjacent U-shaped flat wires in the stator slot matches the width of the conductive ring, and the upper end surface of one end of the U-shaped flat wire close to the conductive ring is located in the same plane.

[0014] Preferably, two stator slots are spaced between two ends of the same U-shaped flat wire, and two stator slots are spaced between two paired connection points.

[0015] This solution provides an assembly process for a conductive ring converging flat wire winding stator, comprising the following steps:

[0016] S1: inserting the flat wire winding into the stator slot, wherein the U-shaped flat wire is inserted into the stator slot in sequence according to the size specifications;

[0017] S2: bend the end of the U-shaped flat wire close to the conductive ring in a direction away from the axis of the stator core;

[0018] S3: Place the conductive ring at the connection position on the flat wire winding, and weld the connection point of the conductive ring to the flat wire winding accordingly.

[0019] The present solution also provides a motor, comprising the above-mentioned conductive ring converging type flat wire winding stator.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] (1) This scheme inserts U-shaped flat wires with the same span but different specifications into the stator slots of the stator core in the same insertion method, places the conductive ring of the multi-layer coaxial ring structure between two adjacent layers of flat wire windings in the stator core, and connects the connection points on the conductive ring to each U-shaped flat wire, thereby obtaining a flat wire winding structure that meets the phase sequence distribution.

[0022] By using U-shaped flat wires with the same span, U-shaped flat wires of appropriate size can be inserted into the stator slots corresponding to the stator core in the same order, which reduces the linearity of the flat wire winding, reduces the difficulty of plugging in and the risk of wrong plugging, and improves the reliability of plugging in; using a conductive ring with a multi-layer concentric ring structure, the sequential flat wire windings are connected in alternating phase sequence through connectors connected in sequence through guide rings; it can avoid twisting one end of the U-shaped flat wire in the circumferential direction towards each other and cross-welding, reduces the difficulty of processing the flat wire, and can avoid the crossing of the U-shaped flat wire, improves the insulation performance of the flat wire, and improves the reliability of the flat wire winding connection.

[0023] (2) In this solution, the outer side of the conductive ring is covered with an insulating plate, and a block is set between adjacent U-shaped flat wires in the same stator slot. The connection plate set between adjacent stator slots separates the welding points between each U-shaped flat wire and the connector, so that there is sufficient gap between each welding point to avoid insulation problems caused by the close contact of copper wires of each phase, improve the reliability of the stator, and extend the service life of the flat wire winding. The connection plate ensures the stability of each layer of conductive rings, and improves the reliability of the stator during rotation.

[0024] (3) In this solution, each layer of U-shaped flat wire is deflected outward to facilitate the placement of the conductive ring between the U-shaped flat wires, avoiding twisting the U-shaped flat wire to both sides, causing the flat wire windings to be cross-distributed, and reducing insulation problems in the flat wire windings. This not only avoids the need to provide twisting equipment, reduces the investment cost of the production line and the risk of flat wire damage, but also improves the product yield. And because the welding end does not need to be twisted, the height of the welding end can be shortened, reducing the material cost of the stator. The outward expansion of the copper wire significantly increases the insulation spacing of the copper wire at the welding end, enhances the insulation performance of the winding, and enhances the heat dissipation effect of the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of a flat wire motor stator provided by the present invention;

[0026] Figure 2 A cross-sectional view of a flat wire motor stator provided by the present invention;

[0027] Figure 3 A schematic diagram of the structure of the stator welding end of the flat wire motor provided by the present invention;

[0028] Figure 4 A schematic structural diagram of the end surface of the stator core provided by the present invention;

[0029] Figure 5 for Figure 4 A partial enlarged view of the

[0030] Figure 6 The U-shaped flat copper wire provided by the present invention has two ends respectively occupying the 7th and 8th layers of the stator core;

[0031] Figure 7 The U-shaped flat copper wire provided by the present invention has two ends respectively occupying the fifth and sixth layers of the stator core;

[0032] Figure 8 The U-shaped flat copper wire provided by the present invention has two ends respectively occupying the third and fourth layers of the stator core;

[0033] Fig. 9 The U-shaped flat copper wire provided by the present invention has two ends respectively occupying the first layer and the second layer of the stator core;

[0034] Fig.10 A schematic diagram of the structure of a conductive ring provided by the present invention;

[0035] In the figure: 1. stator core, 11. stator slot, 2. conductive ring, 201. connection point, 202. connection plate, 203. block, 204. insulating plate, 3. flat wire winding, 4. bus bar, 301. Upin-7-8-3 flat copper wire, 302. Upin-5-6-3 flat copper wire, 303. Upin-3-4-3 flat copper wire, 304. Upin-1-2-3 flat copper wire. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0040] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] Example 1

[0043] like Figure 1 As shown, this embodiment provides a conductive ring converging flat wire winding stator, including a stator core 1 and a flat wire winding 3, wherein a plurality of layers of flat wire windings 3 are inserted into the stator slots 11 of the stator core 1, and the flat wire windings 3 include U-shaped flat wires, and two stator slots 11 are spaced between the two ends of the U-shaped flat wire; the stator also includes a conductive ring 2, which is a multi-layer coaxial ring structure, and each layer of the conductive ring 2 is arranged between two adjacent layers of the flat wire winding 3 in the stator slot 11, and a connection point 201 is provided on the conductive ring 2, and the connection points 201 are paired in pairs and electrically connected through the conductive ring 2, and the paired connection points 201 are respectively connected to one end of different U-shaped flat wires.

[0044] Working principle: U-shaped flat wires with the same span but different specifications are inserted into the stator slots 11 of the stator core 1 in the same insertion method, and the conductive ring 2 of the multi-layer coaxial ring structure is placed between two adjacent layers of flat wire windings 3 in the stator core, and the connection point 201 on the conductive ring 2 is connected to each U-shaped flat wire to obtain a flat wire winding structure that can meet the phase sequence distribution.

[0045] By using U-shaped flat wires with the same span, U-shaped flat wires of suitable sizes can be inserted into the stator slots 11 corresponding to the stator core 1 in the same order, thereby reducing the linearity of the flat wire winding, reducing the difficulty of plugging in and the risk of wrong plugging, and improving the reliability of plugging in; a conductive ring 2 with a multi-layer concentric ring structure is used to connect the evenly distributed but disordered flat wire windings in an alternating arrangement of the three-phase sequence of UVW through the conductive ring 2 according to the preset requirements of the connector 210; it can avoid twisting one end of the U-shaped flat wire in the circumferential direction towards each other and cross-welding it, thereby reducing the difficulty of processing the flat wire, and can avoid the crossing of the U-shaped flat wire, thereby enhancing the insulation performance of the flat wire and improving the reliability of the connection of the flat wire winding.

[0046] The flat wire winding 3 further comprises an I-type flat copper wire, and the connection point 201 of the conductive ring 2 is connected to the I-type flat copper wire; the stator further comprises a busbar 4, and the busbar 4 is connected to the I-type flat copper wire.

[0047] Preferred implementation mode, as Fig.10 As shown, the conductive ring 2 further includes a ring-shaped insulating plate 204, which is coated on the outside of the conductive ring 2, and the connection points 201 are located on the side wall of the insulating plate 204. The connection points 201 are alternately distributed on both sides of the insulating plate 204.

[0048] Furthermore, a stopper 203 is provided between adjacent connection points 201 on the insulating plate 204 . The stopper 203 is made of insulating material and is located between two adjacent layers of U-shaped flat wires in the stator slot 11 .

[0049] Furthermore, a connecting plate 202 is further provided on the conductive ring 2 . The connecting plate 202 is arranged parallel to the stator slots 11 . The connecting plate 202 is fixed on the insulating plate 204 and is located between adjacent stator slots 11 .

[0050] The outer side of the conductive ring 2 is covered with an insulating plate 204, and a stopper 203 is provided between adjacent U-shaped flat wires in the same stator slot 11, and the connection plate 202 provided between adjacent stator slots is used to separate the welding points between each U-shaped flat wire and the connector, so that there is sufficient gap between each welding point, so as to avoid insulation problems caused by the close contact of copper wires of each phase, improve the reliability of the stator, and extend the service life of the flat wire winding. The connection plate 202 is used to ensure the stability of each layer of conductive rings, and improve the reliability of the stator during rotation.

[0051] Preferred implementation mode, as Figure 2 As shown, one end of the U-shaped flat wire close to the conductive ring 2 is bent away from the axis of the stator core 1, the spacing between adjacent U-shaped flat wires in the stator slot 11 matches the width of the conductive ring 2, and the upper end surface of the U-shaped flat wire close to the conductive ring 2 is located in the same plane.

[0052] Optionally, two stator slots 11 are spaced between two ends of the same U-shaped flat wire, and two stator slots 11 are spaced between two paired connection points 1 .

[0053] Deflecting each layer of U-shaped flat wire outwards makes it easier to place the conductive ring between the U-shaped flat wires, avoiding twisting the U-shaped flat wires to both sides, causing the flat wire windings to be cross-distributed, and reducing insulation problems in the flat wire windings. This not only avoids the need for twisting equipment, reduces the investment cost of the production line, and improves the product yield. And because the welding end does not need to be twisted, the height of the welding end can be shortened, reducing the material cost of the stator.

[0054] This embodiment also provides an assembly process for a conductive ring converging type flat wire winding stator, comprising the following steps:

[0055] S1: inserting the flat wire winding into the stator slot 11, wherein the U-shaped flat wire is inserted into the stator slot 11 in sequence according to size specifications;

[0056] S2: bend the end of the U-shaped flat wire close to the conductive ring 2 in a direction away from the axis of the stator core 1;

[0057] S3: placing the conductive ring 2 at the connection position on the flat wire winding, and welding the connection point 201 of the conductive ring 2 to the flat wire winding accordingly.

[0058] This embodiment also provides a motor, including the above-mentioned conductive ring converging type flat wire winding stator.

[0059] This embodiment provides a three-phase 72-slot winding solution for a flat wire stator, with 2 branches and 24 poles. Among them, the spans of all Upin flat copper wires of the flat wire winding are all set to the same span, so as to avoid the increase in the height of the hairpin end caused by the stacking of copper wires in the axial height due to the use of different spans. At the same time, all layers of Upin flat copper wires use a type of Upin flat copper wire, so that Upin-1-2-3 flat copper wires, Upin-3-4-3 flat copper wires, Upin-5-6-3 flat copper wires, and Upin-7-8-3 flat copper wires are arranged in the same space, and can occupy 1-2 layers, 3-4 layers, 5-6 layers, and 7-8 layers respectively. The layers of Upin flat copper wires are arranged overlapping each other, which is convenient for plugging in. The similarity of the flat wire arrangement reduces the difficulty of plugging in the stator of the flat wire motor and reduces the risk of incorrect plugging in operations.

[0060] In order to achieve the connection of the overall circuit of the flat wire winding, a conductive ring is added to connect the required connection points of each slot and each layer. Under the premise that the welding end of the flat wire stator does not need to be twisted, the connection of the overall circuit of the flat wire winding can also be achieved.

[0061] The conductive ring is a multi-layered ring structure. The conductive ring adopts an integral insulation process to form a ring-shaped insulating plate 204, and there are evenly distributed blocks 203 on the insulating plate to separate the welding points. Connecting plates 202 are arranged between the insulating plates to achieve the connection of each layer, and the connection point 201 connected to the flat copper wire of the welding end is exposed. Due to the installation of the conductive ring, each layer of the welding end has sufficient insulation gaps, which avoids the insulation problem caused by the copper wires of each phase of the welding end being close together.

[0062] Specifically, Figure 1 and Figure 2 As shown, the flat wire motor stator includes a stator core 1, a conductive ring 2, a flat wire winding 3 and a busbar 4. For example, 2N = 8 flat copper wires are placed in the stator slot 11, the number of slots S = 72, and the number of poles is 24. The flat wire winding has two branches, and the three-phase windings U, V, and W are composed of N types of Upin wires.

[0063] like Figures 2 to 5 As shown, the flat wire winding 3 is composed of a number S of Upin-7-8-3 flat copper wires 301, Upin-5-6-3 flat copper wires 302, Upin-3-4-3 flat copper wires 303, and Upin-1-2-3 flat copper wires 304;

[0064] like Figure 6As shown, 72 Upin-7-8-3 flat copper wires are used, and both ends of the flat copper wires are respectively inserted into the L7 layer S1 core slot and the L8 layer S70 core slot, the L7 layer S2 core slot and the L8 layer S71 core slot, the L7 layer S3 core slot and the L8 layer S72 core slot, the L7 layer S4 core slot and the L8 layer S1 core slot, the L7 layer S5 core slot and the L8 layer S2 core slot, the L7 layer S6 core slot and the L8 layer S3 core slot, the L7 layer S7 core slot and the L8 layer S4 core slot, the L7 layer S8 core slot and the L8 layer S5 core slot, the L7 layer S9 core slot and the L8 layer S6 core slot, the L7 layer S10 core slot and the L8 layer S7 core slot, the L7 layer S11 core slot and the L8 layer S8 core slot, and the L7 layer S12 core slot With L8 layer S9 core slot, L7 layer S13 core slot and L8 layer S10 core slot, L7 layer S14 core slot and L8 layer S11 core slot, L7 layer S15 core slot and L8 layer S12 core slot, L7 layer S16 core slot and L8 layer S13 core slot, L7 layer S17 core slot and L8 layer S14 core slot, L7 layer S18 core slot and L8 layer S1 5 core slots, L7 layer S19 core slots and L8 layer S16 core slots, L7 layer S20 core slots and L8 layer S17 core slots, L7 layer S21 core slots and L8 layer S18 core slots, L7 layer S22 core slots and L8 layer S19 core slots, L7 layer S23 core slots and L8 layer S20 core slots, L7 layer S24 core slots and L8 layer S21 core slots, The L7 layer S25 core slot and the L8 layer S22 core slot, the L7 layer S26 core slot and the L8 layer S23 core slot, the L7 layer S27 core slot and the L8 layer S24 core slot, the L7 layer S28 core slot and the L8 layer S25 core slot, the L7 layer S29 core slot and the L8 layer S26 core slot, the L7 layer S30 core slot and the L8 layer S27 core slot, the L7 layer S3 1 core slot and L8 layer S28 core slot, L7 layer S32 core slot and L8 layer S29 core slot, L7 layer S33 core slot and L8 layer S30 core slot, L7 layer S34 core slot and L8 layer S31 core slot, L7 layer S35 core slot and L8 layer S32 core slot, L7 layer S36 core slot and L8 layer S33 core slot, L7 layer S37 core slot and L8 layer S34 core slot, L7 layer S38 core slot and L8 layer S35 core slot, L7 layer S39 core slot and L8 layer S36 core slot, L7 layer S40 core slot and L8 layer S37 core slot, L7 layer S41 core slot and L8 layer S38 core slot, L7 layer S42 core slot and L8 layer S39 core slot, L7 layer S43 core slot and L8 layer S4 0 core slot, L7 layer S44 core slot and L8 layer S41 core slot, L7 layer S45 core slot and L8 layer S42 core slot, L7 layer S46 core slot and L8 layer S43 core slot, L7 layer S47 core slot and L8 layer S44 core slot, L7 layer S48 core slot and L8 layer S45 core slot, L7 layer S49 core slot and L8 layer S46 core slot,The L7 layer S50 core slot and the L8 layer S47 core slot, the L7 layer S51 core slot and the L8 layer S48 core slot, the L7 layer S52 core slot and the L8 layer S49 core slot, the L7 layer S53 core slot and the L8 layer S50 core slot, the L7 layer S54 core slot and the L8 layer S51 core slot, the L7 layer S55 core slot and the L8 layer S52 core slot, the L7 layer S56 core slot and the L8 layer S53 core slot, the L7 layer S57 core slot and the L8 layer S54 core slot, the L7 layer S58 core slot and the L8 layer S55 core slot, the L7 layer S59 core slot and the L8 layer S56 core slot, the L7 layer S60 core slot and the L8 layer S57 core slot, the L7 layer S61 core slot and The L8 layer S58 core slot, the L7 layer S62 core slot and the L8 layer S59 core slot, the L7 layer S63 core slot and the L8 layer S60 core slot, the L7 layer S64 core slot and the L8 layer S61 core slot, the L7 layer S65 core slot and the L8 layer S62 core slot, the L7 layer S66 core slot and the L8 layer S63 core slot, the L7 layer S67 core slot and the L8 layer S64 core slot, the L7 layer S68 core slot and the L8 layer S65 core slot, the L7 layer S69 core slot and the L8 layer S66 core slot, the L7 layer S70 core slot and the L8 layer S67 core slot, the L7 layer S71 core slot and the L8 layer S68 core slot, the L7 layer S72 core slot and the L8 layer S69 core slot,

[0065] At this point, the stator winding L7 and L8 layers are fully inserted.

[0066] like Figure 7As shown, 72 Upin-5-6-3 flat copper wires are used, and both ends of the flat copper wires are respectively inserted into the L5 layer S1 core slot and the L6 layer S70 core slot, the L5 layer S2 core slot and the L6 layer S71 core slot, the L5 layer S3 core slot and the L6 layer S72 core slot, the L5 layer S4 core slot and the L6 layer S1 core slot, the L5 layer S5 core slot and the L6 layer S2 core slot, the L5 layer S6 core slot and the L6 layer S3 core slot, the L5 layer S7 core slot and the L6 layer S4 core slot, the L5 layer S8 core slot and the L6 layer S5 core slot, the L5 layer S9 core slot and the L6 layer S6 core slot, the L5 layer S10 core slot and the L6 layer S7 core slot, the L5 layer S11 core slot and the L6 layer S8 core slot, and the L5 layer S12 core slot With L6 layer S9 core slot, L5 layer S13 core slot and L6 layer S10 core slot, L5 layer S14 core slot and L6 layer S11 core slot, L5 layer S15 core slot and L6 layer S12 core slot, L5 layer S16 core slot and L6 layer S13 core slot, L5 layer S17 core slot and L6 layer S14 core slot, L5 layer S18 core slot and L6 layer S1 5 core slots, L5 layer S19 core slots and L6 layer S16 core slots, L5 layer S20 core slots and L6 layer S17 core slots, L5 layer S21 core slots and L6 layer S18 core slots, L5 layer S22 core slots and L6 layer S19 core slots, L5 layer S23 core slots and L6 layer S20 core slots, L5 layer S24 core slots and L6 layer S21 core slots, The L5 layer S25 core slot and the L6 layer S22 core slot, the L5 layer S26 core slot and the L6 layer S23 core slot, the L5 layer S27 core slot and the L6 layer S24 core slot, the L5 layer S28 core slot and the L6 layer S25 core slot, the L5 layer S29 core slot and the L6 layer S26 core slot, the L5 layer S30 core slot and the L6 layer S27 core slot, the L5 layer S3 1 core slot and L6 layer S28 core slot, L5 layer S32 core slot and L6 layer S29 core slot, L5 layer S33 core slot and L6 layer S30 core slot, L5 layer S34 core slot and L6 layer S31 core slot, L5 layer S35 core slot and L6 layer S32 core slot, L5 layer S36 core slot and L6 layer S33 core slot, L5 layer S37 core slot and L6 layer S34 core slot, L5 layer S38 core slot and L6 layer S35 core slot, L5 layer S39 core slot and L6 layer S36 core slot, L5 layer S40 core slot and L6 layer S37 core slot, L5 layer S41 core slot and L6 layer S38 core slot, L5 layer S42 core slot and L6 layer S39 core slot, L5 layer S43 core slot and L6 layer S4 0 core slot, L5 layer S44 core slot and L6 layer S41 core slot, L5 layer S45 core slot and L6 layer S42 core slot, L5 layer S46 core slot and L6 layer S43 core slot, L5 layer S47 core slot and L6 layer S44 core slot, L5 layer S48 core slot and L6 layer S45 core slot, L5 layer S49 core slot and L6 layer S46 core slot,The L5 layer S50 core slot and the L6 layer S47 core slot, the L5 layer S51 core slot and the L6 layer S48 core slot, the L5 layer S52 core slot and the L6 layer S49 core slot, the L5 layer S53 core slot and the L6 layer S50 core slot, the L5 layer S54 core slot and the L6 layer S51 core slot, the L5 layer S55 core slot and the L6 layer S52 core slot, the L5 layer S56 core slot and the L6 layer S53 core slot, the L5 layer S57 core slot and the L6 layer S54 core slot, the L5 layer S58 core slot and the L6 layer S55 core slot, the L5 layer S59 core slot and the L6 layer S56 core slot, the L5 layer S60 core slot and the L6 layer S57 core slot, the L5 layer S61 core slot and The L6 layer S58 core slot, the L5 layer S62 core slot and the L6 layer S59 core slot, the L5 layer S63 core slot and the L6 layer S60 core slot, the L5 layer S64 core slot and the L6 layer S61 core slot, the L5 layer S65 core slot and the L6 layer S62 core slot, the L5 layer S66 core slot and the L6 layer S63 core slot, the L5 layer S67 core slot and the L6 layer S64 core slot, the L5 layer S68 core slot and the L6 layer S65 core slot, the L5 layer S69 core slot and the L6 layer S66 core slot, the L5 layer S70 core slot and the L6 layer S67 core slot, the L5 layer S71 core slot and the L6 layer S68 core slot, the L5 layer S72 core slot and the L6 layer S69 core slot.

[0067] At this point, the stator winding L5 and L6 layers are fully inserted.

[0068] like Figure 8As shown, 72 Upin-3-4-3 flat copper wires are used, and both ends of the flat copper wires are respectively inserted into the L3 layer S1 core slot and the L4 layer S70 core slot, the L3 layer S2 core slot and the L4 layer S71 core slot, the L3 layer S3 core slot and the L4 layer S72 core slot, the L3 layer S4 core slot and the L4 layer S1 core slot, the L3 layer S5 core slot and the L4 layer S2 core slot, the L3 layer S6 core slot and the L4 layer S3 core slot, the L3 layer S7 core slot and the L4 layer S4 core slot, the L3 layer S8 core slot and the L4 layer S5 core slot, the L3 layer S9 core slot and the L4 layer S6 core slot, the L3 layer S10 core slot and the L4 layer S7 core slot, the L3 layer S11 core slot and the L4 layer S8 core slot, and the L3 layer S12 core slot With L4 layer S9 core slot, L3 layer S13 core slot and L4 layer S10 core slot, L3 layer S14 core slot and L4 layer S11 core slot, L3 layer S15 core slot and L4 layer S12 core slot, L3 layer S16 core slot and L4 layer S13 core slot, L3 layer S17 core slot and L4 layer S14 core slot, L3 layer S18 core slot and L4 layer S1 5 core slots, L3 layer S19 core slots and L4 layer S16 core slots, L3 layer S20 core slots and L4 layer S17 core slots, L3 layer S21 core slots and L4 layer S18 core slots, L3 layer S22 core slots and L4 layer S19 core slots, L3 layer S23 core slots and L4 layer S20 core slots, L3 layer S24 core slots and L4 layer S21 core slots, The L3 layer S25 core slot and the L4 layer S22 core slot, the L3 layer S26 core slot and the L4 layer S23 core slot, the L3 layer S27 core slot and the L4 layer S24 core slot, the L3 layer S28 core slot and the L4 layer S25 core slot, the L3 layer S29 core slot and the L4 layer S26 core slot, the L3 layer S30 core slot and the L4 layer S27 core slot, the L3 layer S3 1 core slot and L4 layer S28 core slot, L3 layer S32 core slot and L4 layer S29 core slot, L3 layer S33 core slot and L4 layer S30 core slot, L3 layer S34 core slot and L4 layer S31 core slot, L3 layer S35 core slot and L4 layer S32 core slot, L3 layer S36 core slot and L4 layer S33 core slot, L3 layer S37 core slot and L4 layer S34 core slot, L3 layer S38 core slot and L4 layer S35 core slot, L3 layer S39 core slot and L4 layer S36 core slot, L3 layer S40 core slot and L4 layer S37 core slot, L3 layer S41 core slot and L4 layer S38 core slot, L3 layer S42 core slot and L4 layer S39 core slot, L3 layer S43 core slot and L4 layer S4 0 core slot, L3 layer S44 core slot and L4 layer S41 core slot, L3 layer S45 core slot and L4 layer S42 core slot, L3 layer S46 core slot and L4 layer S43 core slot, L3 layer S47 core slot and L4 layer S44 core slot, L3 layer S48 core slot and L4 layer S45 core slot, L3 layer S49 core slot and L4 layer S46 core slot,The L3 layer S50 core slot and the L4 layer S47 core slot, the L3 layer S51 core slot and the L4 layer S48 core slot, the L3 layer S52 core slot and the L4 layer S49 core slot, the L3 layer S53 core slot and the L4 layer S50 core slot, the L3 layer S54 core slot and the L4 layer S51 core slot, the L3 layer S55 core slot and the L4 layer S52 core slot, the L3 layer S56 core slot and the L4 layer S53 core slot, the L3 layer S57 core slot and the L4 layer S54 core slot, the L3 layer S58 core slot and the L4 layer S55 core slot, the L3 layer S59 core slot and the L4 layer S56 core slot, the L3 layer S60 core slot and the L4 layer S57 core slot, the L3 layer S61 core slot and L4 layer S58 core slot, L3 layer S62 core slot and L4 layer S59 core slot, L3 layer S63 core slot and L4 layer S60 core slot, L3 layer S64 core slot and L4 layer S61 core slot, L3 layer S65 core slot and L4 layer S62 core slot, L3 layer S66 core slot and L4 layer S63 core slot, L3 layer S67 core slot and L4 layer S64 core slot, L3 layer S68 core slot and L4 layer S65 core slot, L3 layer S69 core slot and L4 layer S66 core slot, L3 layer S70 core slot and L4 layer S67 core slot, L3 layer S71 core slot and L4 layer S68 core slot, L3 layer S72 core slot and L4 layer S69 core slot,

[0069] At this point, the stator winding L3 and L4 layers are fully inserted.

[0070] like Fig. 9As shown, 72 Upin-1-2-3 flat copper wires are used, and both ends of the flat copper wires are respectively inserted into the L1 layer S1 core slot and the L2 layer S70 core slot, the L1 layer S2 core slot and the L2 layer S71 core slot, the L1 layer S3 core slot and the L2 layer S72 core slot, the L1 layer S4 core slot and the L2 layer S1 core slot, the L1 layer S5 core slot and the L2 layer S2 core slot, the L1 layer S6 core slot and the L2 layer S3 core slot, the L1 layer S7 core slot and the L2 layer S4 core slot, the L1 layer S8 core slot and the L2 layer S5 core slot, the L1 layer S9 core slot and the L2 layer S6 core slot, the L1 layer S10 core slot and the L2 layer S7 core slot, the L1 layer S11 core slot and the L2 layer S8 core slot, and the L1 layer S12 core slot with the L2 layer S9 core slot, the L1 layer S13 core slot and the L2 layer S10 core slot, the L1 layer S14 core slot and the L2 layer S11 core slot, the L1 layer S15 core slot and the L2 layer S12 core slot, the L1 layer S16 core slot and the L2 layer S13 core slot, the L1 layer S17 core slot and the L2 layer S14 core slot, the L1 layer S18 core slot and the L2 layer S1 5 core slots, L1 layer S19 core slots and L2 layer S16 core slots, L1 layer S20 core slots and L2 layer S17 core slots, L1 layer S21 core slots and L2 layer S18 core slots, L1 layer S22 core slots and L2 layer S19 core slots, L1 layer S23 core slots and L2 layer S20 core slots, L1 layer S24 core slots and L2 layer S21 core slots, The core slots of L1 layer S25 and L2 layer S22, the core slots of L1 layer S26 and L2 layer S23, the core slots of L1 layer S27 and L2 layer S24, the core slots of L1 layer S28 and L2 layer S25, the core slots of L1 layer S29 and L2 layer S26, the core slots of L1 layer S30 and L2 layer S27, the core slots of L1 layer S3 1 core slot and L2 layer S28 core slot, L1 layer S32 core slot and L2 layer S29 core slot, L1 layer S33 core slot and L2 layer S30 core slot, L1 layer S34 core slot and L2 layer S31 core slot, L1 layer S35 core slot and L2 layer S32 core slot, L1 layer S36 core slot and L2 layer S33 core slot, L1 layer S37 core slot and L2 layer S34 core slot, L1 layer S38 core slot and L2 layer S35 core slot, L1 layer S39 core slot and L2 layer S36 core slot, L1 layer S40 core slot and L2 layer S37 core slot, L1 layer S41 core slot and L2 layer S38 core slot, L1 layer S42 core slot and L2 layer S39 core slot, L1 layer S43 core slot and L2 layer S4 0 core slot, L1 layer S44 core slot and L2 layer S41 core slot, L1 layer S45 core slot and L2 layer S42 core slot, L1 layer S46 core slot and L2 layer S43 core slot, L1 layer S47 core slot and L2 layer S44 core slot, L1 layer S48 core slot and L2 layer S45 core slot, L1 layer S49 core slot and L2 layer S46 core slot,The L1 layer S50 core slot and the L2 layer S47 core slot, the L1 layer S51 core slot and the L2 layer S48 core slot, the L1 layer S52 core slot and the L2 layer S49 core slot, the L1 layer S53 core slot and the L2 layer S50 core slot, the L1 layer S54 core slot and the L2 layer S51 core slot, the L1 layer S55 core slot and the L2 layer S52 core slot, the L1 layer S56 core slot and the L2 layer S53 core slot, the L1 layer S57 core slot and the L2 layer S54 core slot, the L1 layer S58 core slot and the L2 layer S55 core slot, the L1 layer S59 core slot and the L2 layer S56 core slot, the L1 layer S60 core slot and the L2 layer S57 core slot, the L1 layer S61 core slot and The L2 layer S58 core slot, the L1 layer S62 core slot and the L2 layer S59 core slot, the L1 layer S63 core slot and the L2 layer S60 core slot, the L1 layer S64 core slot and the L2 layer S61 core slot, the L1 layer S65 core slot and the L2 layer S62 core slot, the L1 layer S66 core slot and the L2 layer S63 core slot, the L1 layer S67 core slot and the L2 layer S64 core slot, the L1 layer S68 core slot and the L2 layer S65 core slot, the L1 layer S69 core slot and the L2 layer S66 core slot, the L1 layer S70 core slot and the L2 layer S67 core slot, the L1 layer S71 core slot and the L2 layer S68 core slot, the L1 layer S72 core slot and the L2 layer S69 core slot.

[0071] At this point, the stator winding L1 and L2 layers are fully inserted.

[0072] like Fig.10 Each layer of flat copper wire at the welding end is expanded outward along the diameter for a certain distance. A conductive ring is placed in the expanded gap, and the annular insulating plate 204 enters the expanded gap. The connection point 201 is used for auxiliary positioning and installation. The welding point is isolated by the block 203, and the connecting plate 202 is used to connect the insulating plates 204 of each layer.

[0073] Due to the use of the conductive ring, it can be achieved that: the flat copper wires S29 of the L1, L3, L5, and L7 layers are connected to the flat copper wires S32 of the L2, L4, L6, and L8 layers respectively; the flat copper wires S30 of the L1, L3, L5, and L7 layers are connected to the flat copper wires S33 of the L2, L4, L6, and L8 layers respectively; the flat copper wires S31 of the L1, L3, L5, and L7 layers are connected to the flat copper wires S34 of the L2, L4, L6, and L8 layers respectively; the flat copper wires S32 of the L1, L3, L5, and L7 layers are connected to the flat copper wires S35 of the L2, L4, L6, and L8 layers respectively; the flat copper wires S33 of the L1, L3, L5, and L7 layers are connected to the flat copper wires S36 of the L2, L4, L6, and L8 layers respectively; The flat copper wires of layer S34 are connected to the flat copper wires of layer S37 of layer L2, L4, L6 and L8 respectively; the flat copper wires of layer S35 of layer L1, L3, L5 and L7 are connected to the flat copper wires of layer S38 of layer L2, L4, L6 and L8 respectively; the flat copper wires of layer S36 of layer L1, L3, L5 and L7 are connected to the flat copper wires of layer S39 of layer L2, L4, L6 and L8 respectively; the flat copper wires of layer S37 of layer L1, L3, L5 and L7 are connected to the flat copper wires of layer S40 of layer L2, L4, L6 and L8 respectively; the flat copper wires of layer S38 of layer L1, L3, L5 and L7 are connected to the flat copper wires of layer S41 of layer L2, L4, L6 and L8 respectively; the flat copper wires of layer S39 of layer L1, L3, L5 and L7 are connected to the flat copper wires of layer S42 of layer L2, L4, L6 and L8 respectively Connection of flat copper wires; connection of flat copper wires S40 of L1, L3, L5, L7 layers with flat copper wires S43 of L2, L4, L6, L8 layers respectively; connection of flat copper wires S41 of L1, L3, L5, L7 layers with flat copper wires S44 of L2, L4, L6, L8 layers respectively; connection of flat copper wires S42 of L1, L3, L5, L7 layers with flat copper wires S45 of L2, L4, L6, L8 layers respectively; connection of flat copper wires S43 of L1, L3, L5, L7 layers with flat copper wires S46 of L2, L4, L6, L8 layers respectively; connection of flat copper wires S44 of L1, L3, L5, L7 layers with flat copper wires S47 of L2, L4, L6, L8 layers respectively; connection of flat copper wires S45 of L1, L3, L5, L7 layers The flat copper wires S48 of the L2, L4, L6 and L8 layers are connected respectively; the flat copper wires S46 of the L1, L3, L5 and L7 layers are connected respectively with the flat copper wires S49 of the L2, L4, L6 and L8 layers; the flat copper wires S47 of the L1, L3, L5 and L7 layers are connected respectively with the flat copper wires S50 of the L2, L4, L6 and L8 layers; the flat copper wires S48 of the L1, L3, L5 and L7 layers are connected respectively with the flat copper wires S51 of the L2, L4, L6 and L8 layers; the flat copper wires S49 of the L1, L3, L5 and L7 layers are connected respectively with the flat copper wires S52 of the L2, L4, L6 and L8 layers; the flat copper wires S50 of the L1, L3, L5 and L7 layers are connected respectively with the flat copper wires S53 of the L2, L4, L6 and L8 layers;The flat copper wires S51 of L1, L3, L5, L7 are connected to the flat copper wires S54 of L2, L4, L6, L8 respectively; the flat copper wires S52 of L1, L3, L5, L7 are connected to the flat copper wires S55 of L2, L4, L6, L8 respectively; the flat copper wires S53 of L1, L3, L5, L7 are connected to the flat copper wires S56 of L2, L4, L6, L8 respectively; the flat copper wires S54 of L1, L3, L5, L7 are connected to the flat copper wires S57 of L2, L4, L6, L8 respectively; the flat copper wires S55 of L1, L3, L5, L7 are connected to the flat copper wires S58 of L2, L4, L6, L8 respectively; the flat copper wires S56 of L1, L3, L5, L7 are connected to the flat copper wires S57 of L2, L4, L6, L8 respectively 8 layers of S59 flat copper wire connection; L1, L3, L5, L7 layers of S57 flat copper wire connection with L2, L4, L6, L8 layers of S60 flat copper wire connection; L1, L3, L5, L7 layers of S58 flat copper wire connection with L2, L4, L6, L8 layers of S61 flat copper wire connection; L1, L3, L5, L7 layers of S59 flat copper wire connection with L2, L4, L6, L8 layers of S62 flat copper wire connection; L1, L3, L5, L7 layers of S60 flat copper wire connection with L2, L4, L6, L8 layers of S63 flat copper wire connection; L1, L3, L5, L7 layers of S61 flat copper wire connection with L2, L4, L6, L8 layers of S64 flat copper wire connection; L1, L3, L5, L7 layers of S62 flat copper wire connection The flat copper wires of L1, L3, L5, L7 are connected to the flat copper wires of L2, L4, L6, L8 respectively; the flat copper wires of L1, L3, L5, L7 are connected to the flat copper wires of L2, L4, L6, L8 respectively; the flat copper wires of L1, L3, L5, L7 are connected to the flat copper wires of L2, L4, L6, L8 respectively; the flat copper wires of L1, L3, L5, L7 are connected to the flat copper wires of L2, L4, L6, L8 respectively; the flat copper wires of L1, L3, L5, L7 are connected to the flat copper wires of L2, L4, L6, L8 respectively; the flat copper wires of L1, L3, L5, L7 are connected to the flat copper wires of L2, L4, L6, L8 respectively; the flat copper wires of L1, L3, L5, L7 are connected to the flat copper wires of L2, L4, L6, L8 respectively; the flat copper wires of L1, L3, L5, L7 are connected to the flat copper wires of L2, L4, L6, L8 respectively; the flat copper wires of L1, L3, L5, L7 are connected to the flat copper wires of L70, L2, L4, L6, L8 respectively; 5. The flat copper wires S68 of the L7 layer are connected to the flat copper wires S71 of the L2, L4, L6, and L8 layers respectively; the flat copper wires S69 of the L1, L3, L5, and L7 layers are connected to the flat copper wires S72 of the L2, L4, L6, and L8 layers respectively; the flat copper wires S70 of the L1, L3, L5, and L7 layers are connected to the flat copper wires S1 of the L2, L4, L6, and L8 layers respectively; the flat copper wires S71 of the L1, L3, L5, and L7 layers are connected to the flat copper wires S2 of the L2, L4, L6, and L8 layers respectively; the flat copper wires S72 of the L1, L3, L5, and L7 layers are connected to the flat copper wires S3 of the L2, L4, L6, and L8 layers respectively; the flat copper wires S1 of the L1, L3, L5, and L7 layers are connected to the flat copper wires S4 of the L2, L4, L6, and L8 layers respectively;The connection between the S2 flat copper wires of the L1, L3, L5, and L7 layers and the S5 flat copper wires of the L2, L4, L6, and L8 layers respectively; the connection between the S3 flat copper wires of the L1, L3, L5, and L7 layers and the S6 flat copper wires of the L2, L4, L6, and L8 layers respectively; the connection between the S4 flat copper wires of the L1, L3, L5, and L7 layers and the S7 flat copper wires of the L2, L4, L6, and L8 layers respectively; the connection between the S5 flat copper wires of the L1, L3, L5, and L7 layers and the S8 flat copper wires of the L2, L4, L6, and L8 layers respectively; the connection between the S6 flat copper wires of the L1, L3, L5, and L7 layers and the S9 flat copper wires of the L2, L4, L6, and L8 layers respectively; the connection between the S7 flat copper wires of the L1, L3, L5, and L7 layers The flat copper wires of L1, L3, L5, L7 and S8 are connected to the flat copper wires of L2, L4, L6, L8 respectively; the flat copper wires of L1, L3, L5, L7 and S9 are connected to the flat copper wires of L2, L4, L6, L8 respectively; the flat copper wires of L1, L3, L5, L7 and S10 are connected to the flat copper wires of L2, L4, L6, L8 respectively; the flat copper wires of L1, L3, L5, L7 and S11 are connected to the flat copper wires of L2, L4, L6, L8 respectively; the flat copper wires of L1, L3, L5, L7 and S12 are connected to the flat copper wires of L2, L4, L6, L8 respectively. 6, L8 layer S15 flat copper wire connection; L1, L3, L5, L7 layer S13 flat copper wire connection with L2, L4, L6, L8 layer S16 flat copper wire connection; L1, L3, L5, L7 layer S14 flat copper wire connection with L2, L4, L6, L8 layer S17 flat copper wire connection; L1, L3, L5, L7 layer S15 flat copper wire connection with L2, L4, L6, L8 layer S18 flat copper wire connection; L1, L3, L5, L7 layer S16 flat copper wire connection with L2, L4, L6, L8 layer S19 flat copper wire connection; L1, L3, L5, L7 layer S17 flat copper wire connection with L2, L4, L6, L8 layer S2 0 flat copper wire connection; L1, L3, L5, L7 layer S18 flat copper wire connection with L2, L4, L6, L8 layer S21 flat copper wire connection; L1, L3, L5, L7 layer S19 flat copper wire connection with L2, L4, L6, L8 layer S22 flat copper wire connection; L1, L3, L5, L7 layer S20 flat copper wire connection with L2, L4, L6, L8 layer S23 flat copper wire connection; L1, L3, L5, L7 layer S21 flat copper wire connection with L2, L4, L6, L8 layer S24 flat copper wire connection; L1, L3, L5, L7 layer S22 flat copper wire connection with L2, L4, L6, L8 layer S25 flat copper wire connection;

[0074] And, the flat copper wire S26 of L2, L4, L6 layers is connected to the flat copper wire S23 of L3, L5, L7 layers respectively; the flat copper wire S27 of L2, L4, L6 layers is connected to the flat copper wire S24 of L3, L5, L7 layers respectively; the flat copper wire S28 of L2, L4, L6 layers is connected to the flat copper wire S25 of L3, L5, L7 layers respectively; the flat copper wire S29 of L2, L4, L6 layers is connected to the flat copper wire S26 of L3, L5, L7 layers respectively; the flat copper wire S30 of L2, L4, L6 layers is connected to the flat copper wire S27 of L3, L5, L7 layers respectively; the flat copper wire S31 of L2, L4, L6 layers is connected to the flat copper wire S28 of L3, L5, L7 layers respectively;

[0075] The flat copper wires S23, S24, S25, S26, S27, and S28 of the L1 layer and the flat copper wires S26, S27, S28, S29, S30, and S31 of the L8 layer are the current input lines and current output lines of each branch of the flat wire three-phase winding.

[0076] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A conductive ring converging type flat wire winding stator, comprising a stator core (1) and a flat wire winding (3), wherein a plurality of layers of flat wire winding (3) are inserted into stator slots (11) of the stator core (1), characterized in that: The flat wire winding (3) comprises a U-shaped flat wire, and the stator further comprises a conductive ring (2), the conductive ring (2) being a multi-layer coaxial ring structure, each layer of the conductive ring (2) being arranged between two adjacent layers of the flat wire winding (3) in the stator slot (11), the conductive ring (2) being provided with connection points (201), the connection points (201) being paired in pairs and electrically connected via the conductive ring (2), and the paired connection points (201) being respectively connected to one end of different U-shaped flat wires.

2. The conductive ring converging type flat wire winding stator according to claim 1, characterized in that: The flat wire winding (3) further comprises an I-shaped flat copper wire, and the connection point (201) of the conductive ring (2) is connected to the I-shaped flat copper wire; the stator further comprises a busbar (4), and the busbar (4) is connected to the I-shaped flat copper wire.

3. The conductive ring converging type flat wire winding stator according to claim 1, characterized in that: The conductive ring (2) further comprises a ring-shaped insulating plate (204), wherein the insulating plate (204) is coated on the surface of the conductive ring (2), and the connection point (201) is located on the side wall of the insulating plate (204).

4. The conductive ring converging type flat wire winding stator according to claim 3, characterized in that: The connection points (201) are alternately distributed on both sides of the insulating plate (204).

5. The conductive ring converging type flat wire winding stator according to claim 3, characterized in that: A stopper (203) is provided between adjacent connection points (201) on the insulating plate (204); the stopper (203) is made of insulating material; and the stopper (203) is provided between two adjacent layers of U-shaped flat wires in the stator slot (11).

6. The conductive ring converging type flat wire winding stator according to claim 3, characterized in that: The conductive ring (2) is also provided with a connecting plate (202), the connecting plate (202) is arranged parallel to the stator slot (11), the connecting plate (202) is fixed on the insulating plate (204), and is located between adjacent stator slots (11).

7. The conductive ring converging type flat wire winding stator according to claim 1, characterized in that: One end of the U-shaped flat wire close to the conductive ring (2) is bent in a direction away from the axis of the stator core (1), the spacing between adjacent U-shaped flat wires in the stator slot (11) matches the width of the conductive ring (2), and the upper end surface of one end of the U-shaped flat wire close to the conductive ring (2) is located in the same plane.

8. The conductive ring converging type flat wire winding stator according to claim 1, characterized in that: Two stator slots (11) are spaced between the two ends of the same U-shaped flat wire, and two stator slots (11) are spaced between the two paired connection points (1).

9. An assembly process for a conductive ring converging flat wire winding stator according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: inserting the flat wire winding into the stator slot (11), wherein the U-shaped flat wire is inserted into the stator slot (11) in sequence according to size specifications; S2: bending the end of the U-shaped flat wire close to the conductive ring (2) in a direction away from the axis of the stator core (1); S3: placing the conductive ring (2) at the connection position on the flat wire winding, and welding the connection point (201) of the conductive ring (2) to the flat wire winding accordingly.

10. A motor, characterized in that: It comprises a conductive ring converging type flat wire winding stator as described in any one of claims 1-8.

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