Stator wiring support and motor stator assembly

Abstract

The utility model discloses a stator wiring support, which comprises an annular insulating main body and a plurality of threading holes, and the plurality of threading holes are uniformly distributed on the upper surface of the annular insulating main body and penetrate through the annular insulating main body from top to bottom. Wherein the upper surface of the ring-shaped insulating main body is also provided with a wire slot, the wire slot avoids the positions of all the threading holes, and at least part of the threading holes are communicated with the wire slot. Moreover, the utility model also designs a brand-new motor stator assembly, which comprises a plurality of stator windings and a stator wiring support, the plurality of stator windings are annularly arranged, two adjacent stator windings are connected and matched with each other, and the annular insulating main body of the stator wiring support covers one ends of the plurality of stator windings; wherein the stator windings comprise wire inlet heads, the wire inlet heads of the plurality of stator windings respectively extend into the threading holes of the annular insulating main body, and at least part of the wire inlet heads of the stator windings are connected with the first conductive flat cables in the wire slots of the annular insulating main body.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a stator wiring bracket and a motor stator assembly. Background Art

[0002] In recent years, with the rapid development of new energy vehicles, technical indicators such as motor efficiency and power density have been continuously improved; among them, the dual-rotor axial flux motor is a special type of permanent magnet synchronous motor with a unique structure. Its rotor is located on the side of the stator rather than inside the stator, which allows the rotor to have a larger diameter, thereby obtaining higher torque output under the same force.

[0003] Currently, the stator of an existing dual-rotor axial flux motor is typically composed of multiple stator windings wound with copper wire, which need to be connected in series to form a complete stator winding. When winding the copper wire, sufficient wire ends must be left for connecting to the next stator winding. The wire ends of the connected stator windings must then be welded or riveted to complete the series connection.

[0004] The study found that the existing wiring method has the following deficiencies and disadvantages: (1) The wire harness lengths of the input and output terminals reserved for each stator winding are different, which increases the difficulty of winding; (2) Individual stator windings of different specifications need to be spliced ​​in sequence according to the stator winding wiring expansion diagram, which increases the difficulty of assembly; (3) The connecting copper wires are exposed, manually connected, and arranged irregularly, which is easy to interfere with other components, especially with the rotating rotor, causing the risk of interference and causing line short circuit; (4) Manual welding or riveting for wiring can easily affect the connection quality and make protection difficult; (5) If there are quality problems with the wiring, subsequent maintenance and repair are difficult. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a stator wiring bracket and a motor stator winding, so as to solve the problems of the existing multiple stator windings being difficult to wind, poor protection, easy short circuit due to irregular arrangement, poor connection quality and difficult subsequent maintenance when they are manually wired according to the stator winding wiring expansion diagram.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a stator wiring bracket, which includes: a circular insulating body and a plurality of wire threading holes, the plurality of wire threading holes are evenly distributed on the upper surface of the circular insulating body and penetrate the circular insulating body from top to bottom; wherein, the upper surface of the circular insulating body is also provided with a wire groove, the wire groove avoids the positions of all the wire threading holes, and at least some of the wire threading holes are connected to the wire groove.

[0007] In the above technical solution of the present invention, the present invention designs a new stator wiring bracket, which can be used for auxiliary wiring, so that the operator can use the stator wiring bracket to perform simple and accurate winding, thereby wiring the stator winding. It can be effectively set at one end of multiple stator windings. The operator can route and connect the wires according to the path of the wire slot in the stator wiring bracket, so as to effectively reduce the wiring difficulty, ensure that the splicing of a single stator winding does not require positioning direction and sequential arrangement, and reduce the probability of error.

[0008] In addition, based on the above design, due to the use of the stator terminal bracket designed by the present invention, the conductive cables and power cables used to connect the input terminals of the stator windings can be correspondingly arranged in the wire slots of the stator terminal bracket and are effectively insulated and isolated, so as not to interfere with other components and avoid damage caused by interference with other components.

[0009] Moreover, in this utility model, since the stator terminal bracket is provided with a wire threading hole, the wire entry head of the stator winding can pass through the wire threading hole to complete welding. The welding position is fixed and can be welded by automatic welding equipment. The welding quality is reliable and manual welding is not required. Moreover, welding is done inside the stator terminal bracket without causing damage to other components.

[0010] At the same time, the stator wiring bracket designed by the present invention and the wiring arrangement in the wire slot provided in the stator wiring bracket are quick and simple to dismantle. Both overall dismantling and individual stator winding dismantling are feasible without damaging the entire stator winding. The scrap rate is low and recycling and maintenance are convenient. It has good promotion prospects and application value.

[0011] Furthermore, in the stator wiring bracket described in the present invention, a plurality of screw holes are further provided on the upper surface of the annular insulating body, and the wire trough avoids the positions of all the screw holes.

[0012] In the above technical solution of the present invention, screw holes are provided on the upper surface of the above-mentioned annular insulating body to facilitate the use of screws to fix the annular insulating body of the stator wiring bracket with the external components of the motor, such as the motor housing, thereby effectively fixing the position of the annular insulating body to prevent the annular insulating body in the motor from uncontrollable displacement during subsequent work and affecting the normal operation of the motor.

[0013] Furthermore, in the stator wiring bracket described in the present invention, the upper surface of the annular insulating body is also provided with a plurality of avoidance holes, and the plurality of avoidance holes are arranged from top to bottom through the annular insulating body, and the wire groove avoids the positions of all the avoidance holes.

[0014] In the above technical solution of the present invention, a plurality of avoidance holes are provided on the upper surface of the annular insulating body of the stator terminal bracket because: the stator terminal bracket will be used in the stator of a dual-rotor axial flux motor; wherein, the dual-rotor axial flux motor has a stator and two rotors, the two rotors are arranged opposite to each other, and the stator is arranged between the two rotors; considering that in some embodiments, the stator winding needs to be fixed with screws, in order to avoid the stator fixing screws, avoidance holes need to be reserved so as to avoid interference problems.

[0015] Furthermore, in the stator connection bracket described in the present invention, the avoidance hole penetrates the outer circular wall of the annular insulating body from top to bottom.

[0016] In view of the structural characteristics of the stator assembly and rotor assembly of the dual-rotor axial flux motor, in order to effectively avoid the rotor assemblies on both sides of the stator assembly, the stator terminal bracket described in the present invention still needs to maintain an appropriate distance from the outer diameter of the rotor assembly when it is set on the stator assembly to prevent interference between the rotor assembly and the stator terminal bracket.

[0017] Correspondingly, another object of the present invention is to provide a motor stator assembly, which includes multiple stator windings and the above-mentioned stator wiring bracket of the present invention, wherein the multiple stator windings are arranged in a circular ring shape, two adjacent stator windings are connected and cooperated with each other, and the circular insulating body of the stator wiring bracket is covered on one end of the multiple stator windings; wherein, the stator winding includes a wire entry head, and the wire entry heads of the multiple stator windings are respectively extended into the wire threading holes of the circular insulating body, and at least some of the wire entry heads of the stator windings are connected to the first conductive bus bar in the wire slot of the circular insulating body.

[0018] Furthermore, in the motor stator assembly described in the present invention, a plurality of first conductive wires are provided in the wire slots of the annular insulating body, and first connection holes are provided at both ends of the plurality of first conductive wires to connect the wire input ends of different stator windings through the first connection holes.

[0019] Furthermore, in the motor stator assembly described in the present invention, a plurality of the first conductive wires are stacked in sequence in the wire slots of the annular insulating body, and two adjacent first conductive wires are not connected or contacted.

[0020] Furthermore, in the motor stator assembly described in the present invention, the stator winding also includes an outlet head, and the outlet heads are all arranged at the other end of the stator winding away from the annular insulating body; wherein the outlet heads of two adjacent stator windings are connected by a second conductive bus bar.

[0021] Furthermore, in the motor stator assembly described in the present invention, a plurality of second conductive wires are provided at the other end of the stator winding away from the annular insulating body, and second connection holes are provided at both ends of the plurality of second conductive wires to connect the output ends of different stator windings through the second connection holes.

[0022] Furthermore, the motor stator assembly described in the present invention also includes a three-phase power line, which is arranged in the wire groove of the annular insulating body of the stator wiring bracket, and the three wires of the three-phase power line are respectively connected to the incoming wire ends of three different stator windings.

[0023] The beneficial effects of the present invention are as follows: a new stator wiring bracket is designed, which can be specifically used for wiring of stator windings, wherein a wire slot is provided therein, and the wire slot can be provided with prefabricated conductive wires in advance, the conductive wires have a single shape, and can be produced on a large scale, thereby effectively shortening the production cycle, facilitating subsequent wiring with the stator winding input head, and reducing wiring difficulty; at the same time, the stator wiring bracket can also effectively protect the conductive wires and power lines, avoiding damage caused by interference with other components, and improving the protection level; the stator wiring bracket can be manufactured on a large scale, saving costs and improving production efficiency, and has a compact and reasonable structure, high fault tolerance, simple operation, and is suitable for automated production.

[0024] It can be seen that the stator wiring bracket designed by the present invention can effectively assist wiring. The operator can route and connect the wires according to the path of the wire slot in the stator wiring bracket, so as to effectively reduce the difficulty of wiring, enable the operator to wind the wires simply and accurately, thereby connecting multiple stator windings and reducing the probability of error; the stator wiring bracket has a firm and reliable structure, reduced later maintenance, a long service life and strong replaceability. Once the stator winding fails or is damaged, it can be quickly replaced, and the maintenance cost is reduced. It has good promotion prospects and application value.

[0025] Correspondingly, the motor stator assembly designed in the present invention also adopts the above-mentioned stator terminal bracket of the present invention. The motor stator assembly can be applied to the dual-rotor axial flux motor, which also has the above-mentioned advantages and beneficial effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a motor stator assembly according to the present invention in one embodiment from one viewing angle;

[0027] Figure 2 This is a schematic structural diagram of a motor stator assembly according to the present invention in another perspective under one embodiment;

[0028] Figure 3 This is a structural exploded diagram of a motor stator assembly according to one embodiment of the present invention;

[0029] Figure 4 This is a partial structural diagram of a motor stator assembly according to the present utility model in one embodiment;

[0030] Figure 5 This is a schematic structural diagram of a stator winding of a motor stator assembly according to one embodiment of the present invention;

[0031] Figure 6 This is an exploded view of the structure of the motor stator assembly according to one embodiment of the present invention with the stator connection bracket hidden;

[0032] Figure 7 This is a schematic structural diagram of a second conductive cable of a motor stator assembly according to one embodiment of the present invention;

[0033] Figure 8 This is a top view of the structure of a motor stator assembly according to one embodiment of the present invention, in which a plurality of first conductive cables are arranged in the wire slots of the stator wiring bracket;

[0034] Figure 9 This is a structural schematic diagram of a motor stator assembly according to one embodiment of the present invention, in which a plurality of first conductive cables are arranged in the wire slots of a stator wiring bracket;

[0035] Figure 10 for Figure 9 The structural exploded view of the stator connection bracket is shown.

[0036] Description of labels:

[0037] 1. Circular insulating body; 11. Threading hole; 12. Wire trough; 13. Screw hole; 14. Avoidance hole;

[0038] 2. Stator winding; 21. Inlet terminal; 22. Outlet terminal; 23. First conductive cable; 24. First connection hole; 25. Second conductive cable; 26. Second connection hole;

[0039] 3. Three-phase power line; 31. First conductor; 32. Second conductor; 33. Third conductor. DETAILED DESCRIPTION

[0040] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0041] Please refer to Figures 1 to 6As shown, in the present invention, a new motor stator assembly is designed, which can be mass-produced, has high production efficiency, can be effectively used in dual-rotor axial flux motors, and can be further used in fields such as electric vehicles.

[0042] like Figures 1 to 6 As shown, in this embodiment, the motor stator assembly specifically includes: a plurality of stator windings 2 and a stator wiring bracket; wherein, the plurality of stator windings 2 are specifically arranged in a circular ring shape, and two adjacent stator windings 2 are connected and cooperated with each other, and the stator wiring bracket also adopts a circular ring structure design, which can be specifically covered on one end of the plurality of stator windings 2 to assist in the wiring of the plurality of stator windings 2.

[0043] Accordingly, if Figure 7-10 As shown, in this embodiment, the stator wiring bracket specifically includes: a circular insulating body 1 and a plurality of wire holes 11. The circular insulating body 1 is specifically covered on one end of the plurality of stator windings 2. The plurality of wire holes 11 are evenly distributed on the upper surface of the circular insulating body 1 and pass through the circular insulating body 1 from top to bottom. The upper surface of the circular insulating body 1 is further provided with a wire groove 12, which avoids the position of all the wire holes 11 to accommodate the first conductive bus 23.

[0044] It is important to note that if Figure 8 and Figure 9 As shown, in actual setting, at least part of the wire holes 11 set on the upper surface of the annular insulating body 1 of the above-mentioned stator wiring bracket needs to be connected to the above-mentioned wire slots 12 to facilitate the subsequent electrical connection of the first conductive wires 23 set in the wire slots 12 with multiple stator windings 2.

[0045] like Figure 5 As shown, in this embodiment, multiple stator windings 2 include wire leads 21. The wire leads 21 of the multiple stator windings 2 are respectively extended into the wire holes 11 of the annular insulating body 1 of the stator terminal support. At this time, at least some of the wire leads 21 of the stator windings 2 can be connected to the first conductive wires 23 in the wire slots 12 of the annular insulating body 1. In this embodiment, the wire slots 12 of the annular insulating body 1 are provided with four first conductive wires 23, namely, first conductive wire a, first conductive wire b, first conductive wire c, and first conductive wire d. These four first conductive wires 23 are stacked and assembled, and each first conductive wire 23 has a first connection hole 24 at both ends (see Figure 10 ), to connect the wire ends 21 of different stator windings 2 through the first connecting holes 24; at the same time, the four first conductive wires 23 are stacked in sequence in the wire slots 12 of the annular insulating body 1, and no two adjacent first conductive wires 23 are connected or contacted to avoid short circuit.

[0046] Accordingly, see further Figure 2 It can be seen that in this embodiment, the multiple stator windings 2 further include outlet ends 22. The outlet ends 22 of the multiple stator windings 2 of the motor stator assembly are all arranged at the other end of the stator winding 2 away from the annular insulating body 1 of the stator wiring bracket. At this time, the outlet ends 22 of two adjacent stator windings 2 can be connected through the second conductive wire 25. Figure 7 It is not difficult to see that both ends of the second conductive wire 25 are provided with second connection holes 26 to connect the outlet ends 22 of different stator windings 2 through the above-mentioned second connection holes 26. The second conductive wire 25 can be welded and fixed to the outlet ends 22.

[0047] It should be noted that in this embodiment, in order to facilitate subsequent automated production to replace manual labor, in actual application, the specifications of a single stator winding 2 can be controlled to be unified to reduce the winding specifications, and at the same time, the lengths of the inlet ends 21 and outlet ends 22 of all stator windings 2 can be unified to reduce the difficulty and workload of subsequent winding.

[0048] In addition, if Figure 6 As shown, in this embodiment, a three-phase power line 3 is further accommodated in the wire slot 12 of the stator wiring bracket of the above-mentioned motor stator assembly. The three-phase power line 3 can specifically include three conductors, namely a first conductor 31, a second conductor 32 and a third conductor 33. The first conductor 31, the second conductor 32 and the third conductor 33 of the three-phase power line 3 are used to respectively connect to the incoming wire ends 21 of three different stator windings 2; wherein, the incoming wire end 21 of the stator winding 2 connected to the three-phase power line 3 is no longer connected to the above-mentioned first conductive wire 23, and the above-mentioned first conductor 31 will not contact the above-mentioned first conductive wire 23 when arranged in the wire slot 12, so as to improve safety.

[0049] In addition, if Figure 8 、 Figure 9 and Figure 10 As shown, in the stator terminal support of the novel structure designed in the present invention, the upper surface of the annular insulating body 1 of the stator terminal support is further provided with a plurality of screw holes 13, and the aforementioned wire grooves 12 are positioned away from the positions of all screw holes 13. The screw holes 13 are provided to facilitate the use of screws to securely connect the annular insulating body 1 of the stator terminal support to external components of the motor, such as the motor housing, thereby effectively fixing the position of the annular insulating body 1 and preventing uncontrolled displacement of the annular insulating body 1 within the motor during subsequent operation, which could affect the normal operation of the motor.

[0050] Similarly, avoidance holes 14 are further provided on the upper surface of the annular insulating body 1 of the stator terminal bracket. Multiple avoidance holes 14 are arranged from top to bottom through the annular insulating body 1, and the wire grooves 12 of the annular insulating body 1 will also avoid the positions of all avoidance holes 14; and, in this embodiment, the avoidance holes 14 penetrate the outer circular wall of the annular insulating body 1 of the stator terminal bracket from top to bottom.

[0051] It should be pointed out that the reason why multiple avoidance holes 14 are set on the upper surface of the annular insulating body 1 of the stator wiring bracket is because: the stator wiring bracket will be used in the stator of a dual-rotor axial flux motor; wherein, the dual-rotor axial flux motor has a stator and two rotors, the two rotors are arranged opposite to each other, and the stator is arranged between the two rotors.

[0052] In addition, considering that in some embodiments, the stator winding 2 needs to be fixed with screws, in order to avoid the screws, the stator wiring bracket designed in the present invention needs to reserve avoidance holes 14 so as to avoid interference problems.

[0053] At the same time, in view of the structural characteristics of the stator assembly and the rotor assembly of the dual-rotor axial flux motor, in order to effectively avoid the rotor assemblies on both sides of the stator assembly, the stator terminal bracket described in the present invention still needs to maintain an appropriate distance from the outer diameter of the rotor assembly when it is set on the stator assembly to prevent interference between the rotor assembly and the stator terminal bracket.

[0054] It can be seen that the stator wiring bracket designed by the present invention can effectively assist in wiring. The operator can route and connect the wires according to the path of the wire slot 12 in the stator wiring bracket, so as to effectively reduce the difficulty of wiring, enable the operator to wind the wires simply and accurately, and thus connect multiple stator windings 2, reducing the probability of error; the stator wiring bracket has a firm and reliable structure, reduced later maintenance, a long service life and strong replaceability. Once the stator winding 2 fails or is damaged, it can be quickly replaced, and the maintenance cost is reduced. It has good promotion prospects and application value.

[0055] From the above, it can be seen that the motor stator assembly designed by the present invention has optimized its own structure, which can be specifically applied to the wiring of the stator winding 2. A wire slot 12 is provided therein, and the wire slot 12 can be provided with a prefabricated conductive wire. The conductive wire has a single shape and can be produced on a large scale, thereby effectively shortening the production cycle, facilitating subsequent wiring with the wire head 21 of the stator winding 2, and reducing the difficulty of wiring; at the same time, the stator wiring bracket can also effectively protect the conductive wire and the power cord, avoiding damage caused by interference with other components, and improving the protection level; the stator wiring bracket can be mass-produced, saving costs and improving production efficiency. Its structure is compact and reasonable, the fault tolerance rate is high, the operation is simple, and it is suitable for automated production.

[0056] Correspondingly, the motor stator assembly designed in the present invention also adopts the above-mentioned stator terminal bracket of the present invention. The motor stator assembly can be applied to a dual-rotor axial flux motor, which also has the above-mentioned advantages and beneficial effects.

[0057] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A stator connection bracket, characterized in that: include: A circular ring-shaped insulating body and a plurality of wire threading holes, wherein the plurality of wire threading holes are evenly distributed on the upper surface of the circular ring-shaped insulating body and pass through the circular ring-shaped insulating body from top to bottom; wherein, a wire groove is also provided on the upper surface of the circular ring-shaped insulating body, wherein the wire groove avoids the positions of all the wire threading holes, and at least some of the wire threading holes are connected to the wire groove.

2. The stator connection bracket according to claim 1, characterized in that: The upper surface of the annular insulating body is further provided with a plurality of screw holes, and the wire trough avoids the positions of all the screw holes.

3. The stator connection bracket according to claim 2, characterized in that: The upper surface of the annular insulating body is further provided with a plurality of avoidance holes, and the plurality of avoidance holes are arranged through the annular insulating body from top to bottom, and the wire trough avoids the positions of all the avoidance holes.

4. The stator connection bracket according to claim 3, characterized in that: The avoidance hole penetrates the outer circular wall of the annular insulating body from top to bottom.

5. A motor stator assembly, characterized in that: It comprises a plurality of stator windings and a stator connection bracket according to any one of claims 1 to 4, wherein the plurality of stator windings are arranged in a circular ring shape, two adjacent stator windings are connected and cooperated with each other, and the circular insulating body of the stator connection bracket is covered on one end of the plurality of stator windings; wherein the stator windings include wire entry heads, and the wire entry heads of the plurality of stator windings are respectively extended into the wire threading holes of the circular insulating body, and at least some of the wire entry heads of the stator windings are connected to the first conductive bus wire in the wire slot of the circular insulating body.

6. The motor stator assembly according to claim 5, characterized in that: A plurality of first conductive wires are arranged in the wire slots of the annular insulating body. Both ends of the plurality of first conductive wires are provided with first connection holes for connecting to wire terminals of different stator windings through the first connection holes.

7. The motor stator assembly according to claim 6, characterized in that: A plurality of the first conductive wires are stacked in sequence in the wire slots of the annular insulating body, and no two adjacent first conductive wires are connected or contacted.

8. The motor stator assembly according to claim 5, characterized in that: The stator winding further includes an outlet terminal, which is arranged at the other end of the stator winding away from the annular insulating body; wherein the outlet terminals of two adjacent stator windings are connected via a second conductive busbar.

9. The motor stator assembly according to claim 8, characterized in that: A plurality of second conductive wires are provided at the other end of the stator winding away from the annular insulating body. Second connection holes are provided at both ends of the plurality of second conductive wires for connecting the outlet ends of different stator windings through the second connection holes.

10. The motor stator assembly according to claim 5, characterized in that: It also includes a three-phase power line, which is arranged in the wire groove of the annular insulating body of the stator wiring bracket, and the three wires of the three-phase power line are respectively connected to the wire ends of three different stator windings.

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