Motor compatible with star connection and angle connection and star connection and angle connection switching method based on motor

Abstract

The invention relates to a star connection and angle connection compatible motor, the motor comprises a stator assembly, a motor body, an integrated wire holder, a controller three-phase assembly and the like, the stator assembly and the integrated wire holder are installed on the motor body, the integrated wire holder comprises a wire holder body, a star connection assembly, a magnetic ring assembly and an angle connection assembly, and the phase corresponding to the insert of the star joint assembly and the phase corresponding to the insert of the corner joint assembly are in central symmetry. A star connection topology function can be realized when the integrated wire holder is positively mounted, and a corner connection topology function can be realized when the integrated wire holder is reversely mounted for the same parts. Compared with the prior art, the motor structure overcomes the defect that one stator can only achieve one electromagnetic topology, the motor structure is invented, the star connection function and the angle connection function can be achieved for one specific stator, meanwhile, the motor structure has the EMC performance, and the motor structure has the advantages of being good in universality, high in compatibility and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of motor connection, and in particular to a motor compatible with star connection and delta connection and a star-delta connection switching method based on the motor. Background Art

[0002] Flat wire motors have a high slot fill rate, and the same power has a smaller envelope volume; flat wires have good rigidity, can suppress some armature noise, and have good NVH performance; the contact area between flat wires is large, and the heat conduction and heat dissipation are good. Due to the unique advantages of flat wires, passenger electric vehicles in the current market tend to use flat wire motors instead of round wire motors. The disadvantages of flat wire motors are also obvious, mainly because the investment in flat wire production lines is large and the production line flexibility is poor. Therefore, the same flat wire production line can be compatible with more electromagnetic solutions to reduce costs.

[0003] The neutral point of the stator of the existing flat wire motor is not presented in the form of an independent terminal lead-out, but is set at the end of the stator wire package by welding or crimping. The disadvantage of this is that the finished motor can only be star-connected or delta-connected, and the compatibility is poor. It is impossible to use the same stator in both star-connected and delta-connected ways. In addition, at the three-phase connection of the traditional flat wire motor, only the three-phase high-voltage terminal of the motor is transitioned to the three-phase terminal of the motor controller, which only plays a connecting role and does not have EMC performance, that is, the interference size (EMI) and anti-interference ability (EMS) of electronic products in the electromagnetic field, which causes the low-voltage signal of the motor controller or the vehicle controller to be interfered with, affecting the accurate transmission of the signal and the life of the electronic components.

[0004] In summary, the existing flat wire motor can only realize one stator usage mode of star connection or delta connection, and the connection mode between the motor and the motor controller has poor anti-interference performance, which affects the accuracy of the signal. Summary of the invention

[0005] The purpose of the present invention is to provide a motor compatible with star connection and delta connection and a star-delta connection switching method based on the motor in order to improve the compatibility of the flat wire motor. By making the neutral point of the stator into three independent terminals for lead-out, the same motor and the same stator can realize the function of "star connection" and the function of "delta connection" without changing the position and sequence of the three-phase output lines, and obtain two motors with completely different output external characteristics, thereby improving the utilization rate of the production line of the flat wire motor.

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

[0007] A motor compatible with star connection and delta connection, the motor comprises a stator assembly, a motor body, an integrated terminal block and a controller three-phase assembly, the stator assembly and the integrated terminal block are mounted on the motor body, and the controller three-phase assembly is connected to the integrated terminal block.

[0008] Among them, the integrated terminal block includes a terminal block body, a star connection component, a magnetic ring component and a corner connection component. The star connection component and the corner connection component are arranged parallel to each other on the terminal block body. The surface of the terminal block body is divided into two parts, namely a part for installing the insert of the star connection component and a part for installing the insert of the corner connection component. The phase corresponding to the insert of the star connection component and the phase corresponding to the insert of the corner connection component are centrally symmetrical. When the insert of the star connection component or the insert of the corner connection component is connected to the terminal of the stator assembly, the phase of the insert and the phase of the terminal correspond one by one, wherein the terminal includes the phase of the neutral point.

[0009] Furthermore, the stator assembly has six separate terminals, and the phases corresponding to the terminals are: U+, V+, W+, U-, V- and W-, wherein U-, V- and W- are the phases of the neutral point;

[0010] The inserts of the star connection component include a star connection U+ insert, a star connection V+ insert, a star connection W+ insert, a star connection U- insert, a star connection V- insert, a star connection W- insert, and a star connection neutral board which are arranged in sequence. A star connection neutral board is installed on the top of the star connection U- insert, the star connection V- insert and the star connection W- insert. The inserts of the star connection component are filled with insulating material and arranged on the terminal block body.

[0011] Furthermore, the inside of the insert of the star connection component is provided with a threaded hole matched with the wiring terminal, and the outside of the insert of the star connection component is provided with straight lines or mesh lines.

[0012] Furthermore, the stator assembly has six separate terminals, and the corresponding phases of the terminals are U+, V+, W+, U-, V- and W-, respectively. The inserts of the corner assembly include corner W-inserts, corner V-inserts, corner U-inserts, corner W+ inserts, corner V+ inserts and corner U+ inserts arranged in sequence. The corner W-inserts and corner V+ inserts are connected through the W- / V+ connecting plate, the corner V-inserts and corner corner U+ inserts are connected through the V- / U+ connecting plate, the corner U-inserts and W+ inserts are connected through the U- / W+ connecting plate, and the space between each phase is filled with insulating material.

[0013] Furthermore, a threaded hole matching with the terminal block is provided inside the insert of the corner joint component, an anti-rotation hexagonal block is provided at the top of the insert of the corner joint component, and straight lines or mesh patterns are provided on the outer surface of the insert of the corner joint component.

[0014] Furthermore, an installation groove is provided between the star connection component and the corner connection component on the terminal block body, a magnetic ring component is provided in the installation groove, and the three-phase component of the controller passes through the magnetic ring component.

[0015] Furthermore, the magnetic ring component includes a common-mode inductor and an injection-molded base, and the common-mode inductor is a flat circular ring structure.

[0016] Furthermore, bolt holes are respectively provided on both sides of the terminal block body, and the terminal block body is connected to the motor body through the bolt holes. The bolt holes are divided into star-connected bolt holes and corner-connected bolt holes. When the stator assembly is connected to the star-connected assembly, the terminal block body is connected to the motor body through the star-connected bolt holes. When the stator assembly is connected to the corner-connected assembly, the terminal block body is connected to the casing or end cover of the motor body through the corner-connected bolt holes.

[0017] Furthermore, a star-joint mark is provided at the star-joint bolt through hole, and a corner-joint mark is provided at the corner-joint bolt through hole, and the mark includes negative text or positive text.

[0018] Another aspect of the present invention provides a method for switching between star connection and delta connection of the motor, the method comprising: when switching from star connection to delta connection, disconnecting the connection between the insert of the star connection component and the terminal of the stator component, and then rotating the terminal block body 180° to connect the terminal of the stator component and the insert of the delta connection component;

[0019] When switching from corner connection to star connection, disconnect the connection between the insert of the corner connection assembly and the terminal of the stator assembly, then rotate the terminal block body 180°, and connect the terminal of the stator assembly and the insert of the star connection assembly;

[0020] The specific steps for rotating the terminal block body by 180° are as follows:

[0021] Remove the integrated terminal block from the motor body, rotate the terminal block body 180° clockwise or counterclockwise, and then reinstall the rotated integrated terminal block on the motor body.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The present invention makes the stator neutral point U- / V- / W- into three independent terminals. Through the auxiliary connection of the external terminal block, the "star connection function" and "delta connection function" of the neutral point can be realized. The same armature can be expanded into two motors with different output external characteristics to meet the different external characteristic requirements of the market. This approach undoubtedly improves the utilization rate of the flat wire production line and can respond to market requirements more quickly.

[0024] (2) The present invention integrates the common-mode inductor magnetic ring component into the terminal block, thereby improving the electromagnetic compatibility of the motor, facilitating the accurate transmission of high and low voltage electrical signals of the motor controller and the vehicle controller, and extending the life of the electronic components in the controller.

[0025] (3) The present invention integrates the star connection component, the corner connection component and the common mode inductor magnetic ring component into the same terminal block, thereby reducing the mold opening cost of a single terminal block and the number of parts of the whole machine, improving the versatility of the terminal block, facilitating parts management and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the integrated wiring socket of the present invention;

[0028] Figure 3 A detailed diagram of the cooperation between the magnetic ring assembly and the integrated wiring socket of the present invention;

[0029] Figure 4 It is a structural diagram of the star connection assembly of the present invention;

[0030] Figure 5 It is a structural diagram of the magnetic ring assembly of the present invention;

[0031] Figure 6 It is a structural diagram of the corner joint assembly of the present invention;

[0032] In the figure, stator assembly 1, motor body 2, integrated terminal block 3, controller three-phase assembly 4, terminal block body 31, star connection assembly 32, magnetic ring assembly 333, corner connection assembly 34, star connection U+ insert 321, star connection V+ insert 322, star connection W+ insert 323, star connection U- insert 324, star connection V- insert 325, star connection W- insert 326, star connection neutral plate 327, corner connection W- insert 341, corner connection V- insert 342, corner connection U- insert 343, corner connection W+ insert 344, corner connection V+ insert 345, corner connection U+ insert 346, W- / V+ connecting plate 347, V- / U+ connecting plate 348, U- / W+ connecting plate 349, common mode inductor 331, injection molding base 332, star connection bolt through hole 311, corner connection bolt through hole 312. DETAILED DESCRIPTION

[0033] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0034] In order to improve the compatibility of the flat wire motor, the present invention proposes a motor that is compatible with star connection and delta connection. Figure 1As shown. The present invention leads out the six terminals of the stator assembly 1, which are U+ / U- / V+ / V- / W+ / W-, to the integrated terminal block 3, which has both a star connection structure and a delta connection structure. When the six terminals of the stator assembly 1 are connected to the corresponding six terminals of the integrated terminal block 3 with a delta connection function and then led out by the controller three-phase assembly 4, a motor topology with a delta connection function can be realized; when the six terminals of the stator assembly 1 are connected to the corresponding six terminals of the integrated terminal block 3 with a star connection function and then led out by the controller three-phase assembly 4, a motor topology with a star connection function can be realized; and no matter whether the delta connection function or the star connection function is realized, the same stator assembly 1 and the same integrated terminal block 3 are used, and the motor has good versatility and is conducive to mass production.

[0035] The present invention realizes the star connection function or the delta connection function of the motor winding by means of the integrated terminal block 3. The integrated terminal block 3 includes a star connection component 32 and a delta connection component 34. For the same motor and the same stator, the phase sequence of the three-phase output line and the neutral point of the stator is not changed. Figure 2 When the three-phase output line and the neutral connection plate are connected on the side of the star-connected bolt through hole 311, the motor topology corresponding to the function of the star-connected electromagnetic solution can be realized. The same motor and the same stator do not change the phase sequence and position of the three-phase output line and the neutral point of the stator. The same terminal block is rotated 180 degrees, that is, when the six output points on the side of the corner bolt through hole 312 are used, the motor topology corresponding to the function of the corner-connected electromagnetic solution can be realized. The integrated terminal block has a reasonable structure layout and strong compatibility, which is conducive to rapid response to market demand.

[0036] In the present invention, no matter whether the star connection scheme or the delta connection scheme is adopted, when the three-phase high-voltage terminal of the three-phase component 4 of the connection controller is connected with the three-phase high-voltage terminal of the motor body 2, it is necessary to pass through the magnetic ring component 33 including the common-mode inductor 331 and the injection molded base 332, thereby ensuring the EMC performance of high and low voltage electronic components, and at the same time meeting the performance test requirements of the whole vehicle to pass Class 5.

[0037] The motor proposed in the present invention includes: a motor stator assembly 1, a motor body 2, an integrated terminal block 3, a controller three-phase assembly 4, etc., wherein the stator assembly 1 contains 6 terminals; the structure of the integrated terminal block 3 mainly includes: a terminal block body 31, a star connection assembly 32, a magnetic ring assembly 33, a corner connection assembly 34, etc. The structural diagram of the integrated terminal block is shown in FIG. Figure 2 shown.

[0038] The material of the terminal block body 31 includes but is not limited to PPS, PPA, PEEK, etc. The terminal block body 31 is provided with a plurality of bolt through-hole features for connecting with the housing or end cover of the motor body 2. The terminal block body (31) is connected to the motor body 2 through the bolt through-holes. The bolt through-holes are divided into star-connected bolt through-holes 311 and corner-connected bolt through-holes 312. When the stator assembly 1 is connected to the star-connected assembly 32, the terminal block body 31 is connected to the motor body 2 through the star-connected bolt through-holes 311. When the stator assembly 1 is connected to the corner-connected assembly 34, the terminal block body (31) is connected to the housing or end cover of the motor body 2 through the corner-connected bolt through-holes 312. The number of vias includes but is not limited to 2, 4, 6, etc. When the terminal block is rotated to a certain angle, these bolt vias can still fully cooperate with the corresponding screw holes of the casing or end cover. Metal inserts are provided at the bolt vias. The terminal block is marked with "star connection" and "corner connection". The star connection side and the corner connection side of the terminal block have UVW and neutral point marks, which include but are not limited to "negative" and "positive". The terminal block is provided with a feature for placing a common-mode inductor device. Barrier ribs are provided between UVW phases to ensure electrical clearance and creepage distance. The thickness of the ribs includes but is not limited to 1mm, 1.5mm, 2mm, 2.5mm, etc., and the height of the ribs includes but is not limited to 6mm, 7mm, 8mm, 9mm, 10mm, etc.

[0039] The star connection assembly 32 mainly includes: a star connection U+ insert 321, a star connection V+ insert 322, a star connection W+ insert 323, a star connection U- insert 324, a star connection V- insert 325, a star connection W- insert 326, and a star connection neutral plate 327. The star connection neutral plate 327 is installed at the top of the star connection U- insert 324, the star connection V- insert 325, and the star connection W- insert 326. The U+ / V+ / W+ in the star connection component 32 is set in the terminal block body in the form of a metal insert with good conductivity, and the U- / V- / W- is made into a 327 star connection neutral plate in the form of a metal plate with good conductivity. Three U- / V- / W- metal inserts with threaded holes are set below the star connection neutral plate to facilitate the connection of the neutral connection phase of the stator component with the 327 star connection neutral plate, and each star connection phase is also filled with insulating material and set on the terminal block body 31. This can not only meet the star connection function, but also ensure the safety requirements such as electrical clearance and creepage distance. The structure is compact, which not only reduces the number of parts of the whole machine, but also improves the versatility of the terminal block, which is convenient for reducing costs and improving efficiency during mass production. The structural diagram of the star connection component 32 is shown in the figure. Figure 4 shown.

[0040] The material of the star-connected component 32 includes but is not limited to carbon steel, alloy steel, copper alloy, etc. The series of inserts are provided with threaded holes inside, and the specifications of the screw holes include but are not limited to M6, M8, etc. The outer surface of the insert is provided with anti-rotation features, which include but are not limited to straight lines, mesh patterns, etc. The material of the star-connected neutral plate 327 includes but is not limited to T1, T2, TU1, TU2, etc., and the thickness of the neutral plate 327 includes but is not limited to 2mm, 2.5mm, 3mm, etc.

[0041] The corner joint assembly 34 mainly includes: corner joint W-insert 341, corner joint V-insert 342, corner joint U-insert 343, corner joint W+ insert 344, corner joint V+ insert 345, corner joint U+ insert 346, W- / V+ connecting plate 347, V- / U+ connecting plate 348, and U- / W+ connecting plate 349. The corner W- insert 341 and the corner V+ insert 345 are connected through the W- / V+ connecting plate 347, the corner V- insert 342 and the corner U+ insert 346 are connected through the V- / U+ connecting plate 348, and the corner U- insert 343 and the W+ insert 344 are connected through the U- / W+ connecting plate 349, so that W- is connected to V+ in the form of a copper busbar, V- is connected to U+ in the form of a copper busbar, and U- is connected to W+ in the form of a copper busbar. In addition, the space between each phase is filled with insulating material, and the structure is compact, which not only realizes the corner connection function, but also ensures the safety requirements such as electrical clearance and creepage distance. The structural diagram of the corner assembly is shown in FIG. Figure 6 shown.

[0042] The insert of the corner joint component 34 is provided with a threaded hole inside, and the specifications of the threaded hole include but are not limited to M6, M8, etc. The outer surface of the insert is provided with an anti-rotation feature, which includes but is not limited to straight lines, mesh patterns, etc. The end of the insert is provided with an anti-rotation hexagonal feature. The W-insert 341 and the V+ insert 345 are connected together through the W- / V+ connecting plate 347, and the connection includes but is not limited to welding, interference connection, etc. The V-insert 342 and the U+ insert 346 are connected together through the V- / U+ connecting plate 348, and the connection includes but is not limited to welding, interference connection, etc. The U-insert 343 and the W+ insert 344 are connected together through the U- / W+ connecting plate 349, and the connection includes but is not limited to welding, interference connection, etc. The thickness of the W- / V+ connecting plate 347, the V- / U+ connecting plate 348, and the U- / W+ connecting plate 349 includes but is not limited to 2mm, 2.5mm, 3mm, etc.

[0043] The stator assembly 1 has six separate terminals, and the corresponding phases of the terminals are: U+, V+, W+, U-, V- and W-, where U-, V- and W- are the phases of the neutral point.

[0044] The terminal block body 31 is provided with an installation groove, in which a magnetic ring assembly 33 is arranged, and the controller three-phase assembly 4 passes through the magnetic ring assembly 33. The magnetic ring assembly 33 mainly includes: a common mode inductor 331 and an injection molded base 332. The common mode inductor 331 of the magnetic ring assembly 33 and the injection molded base 332 are assembled into a magnetic ring assembly 33 as shown in FIG. Figure 5 As shown, it is arranged on the integrated wiring seat body 31, and the magnetic ring component is arranged between the star connection component and the corner connection component. Figure 3 Regardless of whether the three-phase component 4 of the controller is connected to a star-connected component or a delta-connected component, it is necessary to pass through the magnetic ring component 33. Figure 1 , ensuring the EMC performance of high and low voltage electronic components, and at the same time meeting the performance requirements of Class 5 for the entire vehicle. The structural features of the common mode inductor 331 are Figure 4 The material of the common mode inductor 331 includes but is not limited to nanocrystal, ferrite, etc. The material of the injection molding base 332 includes but is not limited to PPS, PPA, PEEK, etc.

[0045] The three-phase interface of the motor stator extends out 6 terminals, namely U+ / U- / V+ / V- / W+ / W-, and the 6 terminals are connected to the integrated terminal block 3, which is provided with 6 interfaces corresponding to U+ / U- / V+ / V- / W+ / W- with star connection function, such as Figure 2 Corresponding to the star-side interface, the integrated terminal block is also equipped with 6 interfaces corresponding to U+ / U- / V+ / V- / W+ / W- with corner connection function, such as Figure 2 The integrated terminal block is completely symmetrical in space. When the star connection function is used, the 6 terminals of the stator are connected to the corresponding terminals on the star connection side. When the corner connection function is used, the integrated terminal block can be rotated 180 degrees to connect the 6 terminals of the stator to the 6 terminals on the corner connection side. This allows the motor with exactly the same components to output two different topology solutions.

[0046] Based on the above motor, the present invention further proposes a star-delta connection switching method, the method comprising: when switching from star connection to delta connection, disconnecting the connection between the insert of the star connection component 32 and the terminal of the stator component 1, and then rotating the terminal block body 31 by 180 degrees to connect the terminal of the stator component 1 and the insert of the delta connection component 34;

[0047] When switching from the corner connection to the star connection, disconnect the connection between the insert of the corner connection component 34 and the terminal of the stator component 1, then rotate the terminal block body 31 by 180°, and connect the terminal of the stator component 1 and the insert of the star connection component 32. The specific steps of rotating the terminal block body 31 by 180° are: remove the integrated terminal block 3 from the motor body 2, rotate the terminal block body 31 by 180° clockwise or counterclockwise, and then reinstall the rotated integrated terminal block 3 on the motor body 2.

[0048] The present invention makes the stator neutral point U- / V- / W- into three independent terminals for lead-out, and through the auxiliary connection of the external terminal block, the "star connection function" and "corner connection function" of the neutral point can be realized, and the same armature can be expanded into two motors with different output external characteristics to meet the different external characteristic requirements of the market. This approach undoubtedly improves the utilization rate of the flat wire production line and can respond to market requirements more quickly. Integrating the common-mode inductor magnetic ring component into the terminal block improves the electromagnetic compatibility of the motor, is beneficial to the precise transmission of high and low voltage electrical signals of the motor controller and the vehicle controller, and prolongs the life of the electronic components in the controller. In addition, the present invention integrates the star connection component, the corner connection component and the common-mode inductor magnetic ring component into the same terminal block, which reduces the mold opening cost of a single terminal block, reduces the number of parts of the whole machine, improves the versatility of the terminal block, is beneficial to parts management, and reduces costs.

[0049] 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 motor compatible with star connection and delta connection, characterized in that: The motor comprises a stator assembly (1), a motor body (2), an integrated wiring socket (3) and a controller three-phase assembly (4); the stator assembly (1) and the integrated wiring socket (3) are mounted on the motor body (2); the controller three-phase assembly (4) is connected to the integrated wiring socket (3); The integrated terminal block (3) comprises a terminal block body (31), a star connection component (32), a magnetic ring component (33) and a corner connection component (34); the star connection component (32) and the corner connection component (34) are arranged on the terminal block body (31) in parallel with each other; the surface of the terminal block body (31) is divided into two parts, namely, a part for installing an insert of the star connection component (32) and a part for installing an insert of the corner connection component (34); the phase corresponding to the insert of the star connection component (32) and the phase corresponding to the insert of the corner connection component (34) are centrally symmetrical; when the insert of the star connection component (32) or the insert of the corner connection component (34) is connected to the terminal of the stator component (1), the phase of the insert and the phase of the terminal correspond one-to-one; wherein the terminal includes the phase of the neutral point.

2. The motor compatible with star connection and delta connection according to claim 1, characterized in that: The stator assembly (1) has six separate terminals, and the phases corresponding to the terminals are: U+, V+, W+, U-, V- and W-, wherein U-, V- and W- are phases of the neutral point; The inserts of the star connection assembly (32) include a star connection U+ insert (321), a star connection V+ insert (322), a star connection W+ insert (323), a star connection U- insert (324), a star connection V- insert (325), a star connection W- insert (326), and a star connection neutral plate (327) which are arranged in sequence. The star connection neutral plate (327) is installed at the top of the star connection U- insert (324), the star connection V- insert (325), and the star connection W- insert (326). The inserts of the star connection assembly (32) are filled with insulating materials and arranged on the wiring seat body (31).

3. The motor compatible with star connection and delta connection according to claim 2, characterized in that: The inside of the insert of the star connection component (32) is provided with a threaded hole matched with a connection terminal, and the outside of the insert of the star connection component (32) is provided with straight lines or mesh lines.

4. The motor compatible with star connection and delta connection according to claim 1, characterized in that: The stator assembly (1) has six separate connection terminals, and the phases corresponding to the connection terminals are U+, V+, W+, U-, V- and W-, respectively. The inserts of the corner connection assembly (34) include a corner connection W- insert (341), a corner connection V- insert (342), a corner connection U- insert (343), a corner connection W+ insert (344), a corner connection V+ insert (345) and a corner connection U+ insert (346) which are arranged in sequence. The corner connection W- insert (341) and the corner connection V+ insert (345) are connected via a W- / V+ connection plate (347), the corner connection V- insert (342) and the corner connection U+ insert (346) are connected via a V- / U+ connection plate (348), and the corner connection U- insert (343) and the W+ insert (344) are connected via a U- / W+ connection plate (349), and the space between each phase is filled with insulating material.

5. The motor compatible with star connection and delta connection according to claim 4, characterized in that: The insert of the corner joint component (34) is provided with a threaded hole inside for matching with the connection terminal, the top of the insert of the corner joint component (34) is provided with an anti-rotation hexagonal block, and the outer surface of the insert of the corner joint component (34) is provided with straight lines or mesh patterns.

6. The motor compatible with star connection and delta connection according to claim 1, characterized in that: An installation groove is provided between the star connection component (32) and the corner connection component (34) on the wiring seat body (31), a magnetic ring component (33) is arranged in the installation groove, and the controller three-phase component (4) passes through the magnetic ring component (33).

7. The motor compatible with star connection and delta connection according to claim 6, characterized in that: The magnetic ring component (33) comprises a common mode inductor (331) and an injection molded base (332); the common mode inductor (331) is a flat circular ring structure.

8. The motor compatible with star connection and delta connection according to claim 1, characterized in that: Bolt through holes are respectively provided on both sides of the terminal block body (31), and the terminal block body (31) is connected to the motor body (2) through the bolt through holes. The bolt through holes are divided into star-connected bolt through holes (311) and corner-connected bolt through holes (312). When the stator assembly (1) is connected to the star-connected assembly (32), the terminal block body (31) is connected to the motor body (2) through the star-connected bolt through holes (311), and when the stator assembly (1) is connected to the corner-connected assembly (34), the terminal block body (31) is connected to the housing or end cover of the motor body (2) through the corner-connected bolt through holes (312).

9. The motor compatible with star connection and delta connection according to claim 8, characterized in that: A star connection mark is provided at the star connection bolt through hole (311), and a corner connection mark is provided at the corner connection bolt through hole (312), wherein the mark includes an intaglio or a positive mark.

10. A star-delta switching method for a motor according to any one of claims 1 to 9, characterized in that: The method comprises: when switching from star connection to corner connection, disconnecting the connection between the insert of the star connection component (32) and the connection terminal of the stator component (1), then rotating the terminal block body (31) by 180 degrees, and connecting the connection terminal of the stator component (1) and the insert of the corner connection component (34); When switching from a corner connection to a star connection, disconnect the connection between the insert of the corner connection component (34) and the terminal of the stator component (1), then rotate the terminal block body (31) by 180 degrees to connect the terminal of the stator component (1) and the insert of the star connection component (32); The specific steps of rotating the terminal block body (31) by 180° are as follows: The integrated terminal block (3) is removed from the motor body (2), the terminal block body (31) is rotated 180 degrees clockwise or counterclockwise, and then the rotated integrated terminal block (3) is reinstalled on the motor body (2).

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