Stator assembly, stator assembly series winding method, stator assembly parallel winding method and motor

Abstract

The invention discloses a stator assembly, belongs to the technical field of motors, solves the problems of poor fixing effect of outgoing lines of coil windings and low production efficiency, and adopts the technical scheme that the stator assembly mainly comprises a stator iron core and the coil windings, and a plurality of winding teeth for winding the coil windings are uniformly distributed on the outer ring of the stator iron core along the circumferential direction; the stator assembly is provided with a plurality of winding teeth, a wire outlet groove is formed between every two adjacent winding teeth, the coil winding comprises a leading-out wire and a gap bridge wire which are led out and led in from the wire outlet grooves, the leading-out wire and the gap bridge wire are located on the same axial end side of the stator assembly, and the gap bridge wire is arranged along the outer side of the leading-out wire so as to limit the position of the leading-out wire. The lead-out wire fixing device is mainly used for achieving automatic fixing of the lead-out wire and improving the fixing effect. The invention also aims to disclose a stator assembly series winding method, a stator assembly parallel winding method and a motor.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, in particular to a stator assembly, a series winding method and a parallel winding method of a stator assembly, and a motor. Background Art

[0002] Brushless motors are motors that use electronic commutation technology and have better performance and reliability than traditional brushed motors. The winding process of brushless motors is an important part of the motor manufacturing process, and its quality is directly related to the electromagnetic performance, temperature rise, noise and other indicators of the motor.

[0003] Since the lead wires of the coil windings in the stator of the brushless motor are easy to interfere with the rotor, in the prior art, the lead wires of the coil windings are usually fixed with cable ties to prevent loosening or with glue to prevent loosening. However, the cable ties and glue fixation have poor operability for employees and cannot meet the requirements of automated production, resulting in low production efficiency. In addition, the glue is easy to flow and the cable ties are easy to loosen, resulting in poor fixing effect. Summary of the invention

[0004] The purpose to be achieved by the present invention is to provide a stator assembly, which solves the problems of poor fixing effect of the lead wires of the coil winding and low production efficiency, and realizes automatic fixing of the lead wires while improving the fixing effect.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a stator assembly, including a stator core and a coil winding, the outer ring of the stator core is evenly distributed along the circumferential direction with a plurality of winding teeth for winding the coil winding, and a wire outlet slot is formed between two adjacent winding teeth, the coil winding includes a lead-out wire and a bridge wire from the wire outlet slot and the wire in, the lead-out wire and the bridge wire are located on the same axial end side of the stator assembly, and the bridge wire is routed along the outer side of the lead-out wire to limit the position of the lead-out wire.

[0006] After adopting the above technical scheme, the present invention has the following advantages: the lead-out wire and the bridge wire are located on the same axial end side of the stator assembly, and only the bridge wire is needed to effectively fix the position of the lead-out wire. The physical fixing effect of the bridge wire is stronger and is not easily affected by environmental factors. The fixing effect of the lead-out wire is effectively improved, and the risk of the lead-out wire loosening is reduced. There is no need to additionally set up glue, cable ties and other structures, which avoids the problem of unstable fixing caused by the fluidity of the glue in the prior art and the loosening of the cable ties. If disassembly or rewiring is required, the bridge wire is relatively easy to adjust, and it will not be difficult to untie like the cable ties, nor will it leave glue residues that are difficult to remove. The bridge wire can also be completed through the automation of the winding process, thereby significantly improving production efficiency.

[0007] Furthermore, at least two lead-out wires are provided, and at most one lead-out wire is provided outside the bridge wire.

[0008] By adopting the above-mentioned technical solution, the positions of as many lead wires as possible can be defined, and the influence of loose lead wires on other structures of the motor can be minimized. The lead wires can be passed through the bridge wires by setting up additional mechanical structures or manually, so that all lead wires can be fixed.

[0009] Furthermore, the portion of the lead-out wire that contacts the bridge wire is bent relative to the lead-out wire.

[0010] By adopting the above technical solution, the bent portion of the lead-out wire can be reliably fixed on the bridge wire, further achieving a better limiting effect on the lead-out wire.

[0011] Furthermore, the inner ring of the stator core is axially provided with limit posts, which are arranged along the circumferential direction of the stator core and located on the inner side of the lead wire, and the bridge wire is routed along the outer side of the limit post to confine the lead wire between the limit post and the bridge wire.

[0012] By adopting the above technical solution, the limit column provides an additional fixing point, so that the lead-out wire can be firmly fixed between the limit column and the lead-out wire, thereby enhancing the fixing effect and ensuring the stable position of the lead-out wire and the bridge wire. The limit column provides a clear path guidance for the bridge wire, which is conducive to automated production.

[0013] Another object of the present invention is to provide a winding series method for a stator assembly using any of the technical solutions described above, wherein the coil windings are connected in series in the stator core, and the lead wires of the coil windings enter from the lead slots and are wound around the winding teeth, and then are wound around the opposite winding teeth through bridge wires, and the bridge wires are routed along the half-zone of the stator core having the lead wires.

[0014] By adopting the above technical solution, the bridge wire is routed along the half zone of the lead wire along the stator core, which can form a clear limiting effect on the lead wire and avoid omissions in the fixation of the lead wire. The clear routing path is also further conducive to automated production.

[0015] Furthermore, there are a plurality of bridge wires, and two adjacent bridge wires at least partially overlap, and at least part of the lead wires are located between the two overlapping bridge wires outside the stator core.

[0016] By adopting the above-mentioned technical solution, the lead wire is located between two overlapping bridge wires outside the stator core, which further limits the position of the lead wire and further improves the fixing effect of the lead wire.

[0017] Furthermore, the bridge line has an outlet groove without lead-out wires and an inlet wire.

[0018] By adopting the above technical solution, the path of the bridge wire can be better planned through the specific outlet groove, avoiding mutual interference between the bridge wire and the lead-out wire, reducing complex wiring steps and improving production efficiency.

[0019] Further, the stator assembly includes twelve winding teeth, and a first winding tooth, a second winding tooth, a third winding tooth, a fourth winding tooth, a fifth winding tooth, a sixth winding tooth, a seventh winding tooth, an eighth winding tooth, a ninth winding tooth, a tenth winding tooth, an eleventh winding tooth, and a twelfth winding tooth are arranged counterclockwise along the stator core. The stator assembly series winding method includes S1: the starting line of the coil winding is fed into the outlet slot between the first winding tooth and the twelfth winding tooth to form a lead-out line;

[0020] S2: After winding the first winding tooth and the second winding tooth, the wire is led out along the wire outlet groove between the first winding tooth and the second winding tooth, and then counterclockwise along the outer side of the lead-out wire in S1 to form a bridge wire;

[0021] S3: The bridge wire is fed into the wire outlet groove between the seventh winding tooth and the eighth winding tooth;

[0022] S4: After winding the seventh winding tooth and the eighth winding tooth, the wire is led out along the wire outlet groove between the eighth winding tooth and the ninth winding tooth and fed into the wire to form a lead-out wire;

[0023] S5: After winding the ninth winding tooth and the tenth winding tooth, the wire is led out along the wire outlet groove between the ninth winding tooth and the tenth winding tooth, and then the wire is led out counterclockwise along the outer side of the lead-out wire in S4 to form a bridge wire;

[0024] S6: The bridge wire is fed into the wire outlet groove between the third winding tooth and the fourth winding tooth;

[0025] S7: After winding the third winding tooth and the fourth winding tooth, the wire is led out along the wire outlet groove between the fourth winding tooth and the fifth winding tooth and fed into the wire to form a lead-out wire;

[0026] S8: After winding the fifth winding tooth and the sixth winding tooth, the wire is led out along the wire outlet groove between the fifth winding tooth and the sixth winding tooth, and then the wire is led out counterclockwise along the outer side of the lead-out wire in S7 to form a bridge wire;

[0027] S9: The bridge wire is fed into the wire outlet grooves along the eleventh winding tooth and the twelfth winding tooth;

[0028] S10: After winding the eleventh winding tooth and the twelfth winding tooth, the tail wire of the coil winding is led out along the wire outlet groove between the twelfth winding tooth and the first winding tooth to form a lead-out wire.

[0029] By adopting the above technical solution, the coil windings are connected in series, and the bridge wire limits the position of the lead wire, thereby reducing the risk of the lead wire becoming loose.

[0030] Another object of the present invention is to provide a winding parallel method for a stator assembly using any of the technical solutions described above, wherein the coil windings are connected in parallel in the stator core, the lead wires of the coil windings are fed into the lead slots and then wound on the winding teeth in sequence, and the bridge wires surround the outer circumference of the stator core for at least one circle.

[0031] By adopting the above-mentioned technical solution, the bridge wire surrounds the outer circumference of the stator core at least once, which can provide a more secure fixing effect and reduce the risk of displacement of the lead wire due to vibration or mechanical movement. The clear bridge line is more conducive to production.

[0032] Further, the stator assembly includes twelve winding teeth, and a first winding tooth, a second winding tooth, a third winding tooth, a fourth winding tooth, a fifth winding tooth, a sixth winding tooth, a seventh winding tooth, an eighth winding tooth, a ninth winding tooth, a tenth winding tooth, an eleventh winding tooth, and a twelfth winding tooth are arranged counterclockwise along the stator core, and the parallel winding method of the stator assembly includes S1: the starting line of the coil winding is fed into the outlet slot between the first winding tooth and the twelfth winding tooth to form a lead-out line;

[0033] S2: After winding the first winding tooth and the second winding tooth, a wire is led out from a wire outlet groove between the first winding tooth and the second winding tooth to form a lead wire;

[0034] S3: feeding the wire along the wire outlet groove between the third winding tooth and the fourth winding tooth, first winding the wire around the third winding tooth and then winding the wire around the fourth winding tooth;

[0035] S4: The outgoing wire and the incoming wire along the outgoing wire groove between the fourth winding tooth and the fifth winding tooth form a lead-out wire;

[0036] S5: feeding the wire along the wire outlet groove between the fifth winding tooth and the sixth winding tooth, first winding the wire around the fifth winding tooth and then winding the wire around the sixth winding tooth;

[0037] S6: Leading out a wire along the wire outlet groove between the fifth winding tooth and the sixth winding tooth to form a lead-out wire;

[0038] S7: feeding the wire along the wire outlet groove between the seventh winding tooth and the eighth winding tooth, first winding the wire around the seventh winding tooth and then winding the wire around the eighth winding tooth;

[0039] S8: The outgoing wire and the incoming wire along the outgoing wire groove between the eighth winding tooth and the ninth winding tooth form a lead-out wire;

[0040] S9: feeding the wire along the wire outlet groove between the ninth winding tooth and the tenth winding tooth;

[0041] S10: After winding the ninth winding tooth and the tenth winding tooth, leading out the wire along the wire outlet groove between the ninth winding tooth and the tenth winding tooth to form a lead wire;

[0042] S11: feeding the wire along the wire outlet groove between the eleventh winding tooth and the twelfth winding tooth, and winding the wire around the eleventh winding tooth;

[0043] S12: Leading out the wire along the wire outlet groove between the tenth winding tooth and the eleventh winding tooth, crossing the bridge counterclockwise along the end plate limit column to form a bridge wire;

[0044] S13: After the bridge wire is wound around the outside of the lead wires in S1, S2, S4, S6, S8, S10, and S12 for one circle, it is fed into the wire outlet groove between the eleventh winding tooth and the twelfth winding tooth and wound around the twelfth winding tooth;

[0045] S14: The tail wire of the coil winding is led out along the wire outlet slot between the first winding tooth and the twelfth winding tooth to form a lead-out wire.

[0046] By adopting the above-mentioned technical solution, the coil windings are connected in parallel, and the bridge wires can limit the positions of the lead wires in S1, S2, S4, S6, S8, S10, and S12, thereby minimizing the loosening of the lead wires.

[0047] Another object of the present invention is to disclose an electric motor, comprising a rotor and a stator assembly as described in any of the above technical solutions that cooperates with the rotor.

[0048] By adopting the above technology, the lead wires of the motor are effectively fixed through the bridge wires, and the fixing method is also relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The present invention will be further described below in conjunction with the accompanying drawings:

[0050] Figure 1 It is a structural schematic diagram of the stator core of the present invention;

[0051] Figure 2 It is a structural schematic diagram of the stator assembly of the present invention;

[0052] Figure 3 It is a schematic diagram of the stator assembly when the coil windings of the present invention are connected in series;

[0053] Figure 4 It is a schematic diagram of winding when the coil windings of the present invention are connected in series;

[0054] Figure 5 It is a circuit diagram of the coil windings of the present invention when they are connected in series;

[0055] Figure 6 It is a schematic diagram of the stator assembly when the coil windings of the present invention are connected in parallel;

[0056] Figure 7 It is a schematic diagram of the winding when the coil windings of the present invention are connected in parallel;

[0057] Figure 8 It is a circuit diagram when the coil windings of the present invention are connected in parallel;

[0058] In the figure, 100, stator core; 101, first winding tooth; 102, second winding tooth; 103, third winding tooth; 104, fourth winding tooth; 105, fifth winding tooth; 106, sixth winding tooth; 107, seventh winding tooth; 108, eighth winding tooth; 109, ninth winding tooth; 110, tenth winding tooth; 111, eleventh winding tooth; 112, twelfth winding tooth; 113, wire outlet slot; 120, limiting column; 200, coil winding; 210, lead wire; 211, starting wire; 212, tail wire; 220, bridge wire. DETAILED DESCRIPTION

[0059] 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 only part of the embodiments of the present invention, rather than all the embodiments.

[0060] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein.

[0061] It should be understood that in various embodiments of the present invention, the size of the serial numbers of the processes does not mean the order of execution. The execution order of the processes should be determined by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0062] It should be understood that in the present invention, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0063] It should be understood that in the present invention, "plurality" refers to two or more than two. "And / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, X and / or Y can represent: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "Contains X, Y and Z", "Contains X, Y, Z" means that X, Y, and Z are all included, "Contains X, Y or Z" means that one of X, Y, and Z is included, and "Contains X, Y and / or Z" means that any one, any two, or three of X, Y, and Z are included.

[0064] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0065] Embodiment 1:

[0066] like Figures 1 to 8 As shown, the present invention provides a stator assembly, wherein the rotor is located outside the stator assembly, and the stator assembly includes a stator core 100 and a coil winding 200. The outer ring of the stator core 100 is evenly distributed along the circumferential direction with a plurality of winding teeth for winding the coil winding 200, and a wire outlet slot 113 is formed between two adjacent winding teeth. The coil winding 200 includes a lead-out wire 210 and a bridge wire 220 for leading out and leading in from the wire outlet slot 113. The lead-out wire 210 and the bridge wire 220 are located on the same axial end side of the stator assembly, and the bridge wire 220 is routed along the outside of the lead-out wire 210 to limit the position of the lead-out wire 210.

[0067] Only the bridge wire 220 is needed to effectively fix the position of the lead wire 210. The physical fixing effect of the bridge wire 220 is stronger and not easily affected by environmental factors. The fixing effect of the lead wire 210 is effectively improved, and the risk of the lead wire 210 getting loose is reduced. The lead wire 210 is minimized from breaking, short circuiting, etc. to prevent the lead wire 210 from interfering with the rotor. There is no need to additionally set up glue, cable ties, and other structures, thereby avoiding the problem of unstable fixing caused by the fluidity of the glue in the prior art and the loosening of the cable ties. If disassembly or rewiring is required, the bridge wire 220 is relatively easy to adjust, and it will not be difficult to untie like a cable tie, nor will it leave glue residues that are difficult to remove. The bridge wire 220 can also be completed automatically through the winding process, thereby significantly improving production efficiency.

[0068] It should be noted that routing the bridge wire 220 along the outside of the lead wire 210 specifically means that the bridge wire 220 is located outside the lead-out direction of the lead wire 210 and the bridge wire 220 presses the lead wire 210 .

[0069] In order to further enhance the fixing effect of the lead-out wire 210, the portion where the lead-out wire 210 contacts the bridge wire 220 is bent relative to the lead-out wire 210. The bent portion can play a certain supporting role, thereby increasing the contact area between the lead-out wire 210 and the bridge wire 220, thereby enhancing the limiting effect and making it difficult for the lead-out wire 210 to slip out of the bridge wire 220.

[0070] It should be noted that the bending angle of the lead-out line 210 relative to the bridge line 220 can be any suitable angle such as 90° or 120°.

[0071] Furthermore, the inner ring of the stator core 100 is axially provided with a limit column 120, which is arranged along the circumferential direction of the stator core 100 and is located on the inner side of the lead-out wire 210, and the bridge wire 220 is routed along the outer side of the limit column 120 to confine the lead-out wire 210 between the limit column 120 and the bridge wire 220. The limit column 120 provides an additional fixing point, so that the lead-out wire 210 can be firmly fixed between the limit column 120 and the lead-out wire 210, thereby enhancing the fixing effect and ensuring the stable position of the lead-out wire 210 and the bridge wire 220. The limit column 120 also provides a clear path guidance for the bridge wire 220, which is conducive to automated production.

[0072] It should be noted that in this embodiment, the limiting column 120 is an annular structure, which is arranged along the circumferential direction of the stator core 100 to limit the inner side of all the bridge wires 220. Of course, the limiting column 120 can also be arranged in multiple, and multiple limiting columns 120 are arranged in the circumferential direction of the stator core 100. Among them, the lead wire 210 is provided with at least two in the automated winding process, the winding is continuous, and the tail end of the bridge wire 220 is wound on the winding column to form a new lead wire 210, which requires a threading action. For this reason, at most one lead wire 210 can be allowed to be arranged on the outside of the bridge wire 220 to minimize the influence of the loose lead wire 210 on other structures of the motor. Of course, a robot or manual can be used to insert this lead wire 210 into the previous bridge wire 220 to obtain a limit fixation.

[0073] In order to avoid mutual interference between the bridge wire 220 and the lead wire 210, the bridge wire 220 is led out and in through the lead wire slot 113 without the lead wire 210. By entering and exiting the specific lead wire slot 113, the path of the bridge wire 220 can be better planned, avoiding mutual interference between the bridge wire 220 and the lead wire 210, reducing complex wiring steps, and improving production efficiency.

[0074] Among them, the stator core 100 has twelve winding teeth, and the first winding tooth 101, the second winding tooth 102, the third winding tooth 103, the fourth winding tooth 104, the fifth winding tooth 105, the sixth winding tooth 106, the seventh winding tooth 107, the eighth winding tooth 108, the ninth winding tooth 109, the tenth winding tooth 110, the eleventh winding tooth 111, and the twelfth winding tooth 112 are arranged counterclockwise along the stator core 100.

[0075] Among them, the winding methods of the stator assembly in the existing brushless motor are usually series connection and parallel connection.

[0076] like Figures 3 to 5 As shown, when the coil winding 200 is connected in series in the stator core 100, the lead wire 210 of the coil winding 200 enters the lead slot 113 and is wound on the winding teeth, and then is wound on the opposite winding teeth through the bridge wire 220. The bridge wire 220 has a half-area routing of the lead wire 210 along the stator core 100. It can form a clear limiting effect on the lead wire 210, avoid the situation of missing the fixation of the lead wire 210, and the clear routing path is also further conducive to automated production.

[0077] Furthermore, there are multiple bridge wires 220, two adjacent bridge wires 220 at least partially overlap, and at least part of the lead wires 210 are located between the two overlapping bridge wires 220 outside the stator core 100. The position of the lead wire 210 is further limited, and the fixing effect of the lead wire 210 is further improved.

[0078] Specifically, the winding series connection method of the stator assembly includes S1: the starting line 211 of the coil winding 200 is fed into the outlet slot 113 between the first winding tooth 101 and the twelfth winding tooth 112 to form the lead-out line 210;

[0079] S2: After winding the first winding tooth 101 and the second winding tooth 102, the wire is discharged along the wire outlet groove 113 between the first winding tooth 101 and the second winding tooth 102 (without feeding the wire), and then passes through the bridge counterclockwise to form a bridge wire 220;

[0080] S3: The bridge wire 220 enters the wire outlet groove 113 between the seventh winding tooth 107 and the eighth winding tooth 108;

[0081] S4: After winding the seventh winding tooth 107 and the eighth winding tooth 108, the wire is led out along the wire outlet groove 113 between the eighth winding tooth 108 and the ninth winding tooth 109 and then fed in to form the lead wire 210;

[0082] S5: After winding the ninth winding tooth 109 and the tenth winding tooth 110, the wire is discharged along the wire outlet groove 113 between the ninth winding tooth 109 and the tenth winding tooth 110 (without feeding the wire), and then crosses the bridge counterclockwise to form a bridge wire 220;

[0083] S6: The bridge wire 220 enters the wire outlet groove 113 between the third winding tooth 103 and the fourth winding tooth 104;

[0084] S7: After winding the third winding tooth 103 and the fourth winding tooth 104, the wire is led out along the wire outlet groove 113 between the fourth winding tooth 104 and the fifth winding tooth 105 and fed into the wire to form the lead wire 210;

[0085] S8: After winding the fifth winding tooth 105 and the sixth winding tooth 106, the wire is discharged along the wire outlet groove 113 between the fifth winding tooth 105 and the sixth winding tooth 106 (without feeding the wire), and then crosses the bridge counterclockwise to form a bridge wire 220;

[0086] S9: feeding the wire into the wire outlet groove 113 along the eleventh winding tooth 111 and the twelfth winding tooth 112;

[0087] S10 : After winding the eleventh winding tooth 111 and the twelfth winding tooth 112 , the tail wire 212 of the coil winding 200 is led out along the wire outlet groove 113 between the twelfth winding tooth 112 and the first winding tooth 101 to form the lead wire 210 .

[0088] While the coil windings 200 are connected in series, the bridge wire 220 limits the position of the lead wire 210 to reduce the risk of the lead wire 210 being loosened. In step S2, the bridge wire 220 is routed along the outer side of the lead wire 210 in S1 to limit the position of the lead wire 210 in S1. In step S5, the bridge wire 220 is routed along the outer side of the lead wire 210 in S4 to limit the position of the lead wire 210 in S4. In step S8, the bridge wire 220 is routed along the outer side of the lead wire 210 in S7 to limit the position of the lead wire 210 in S7.

[0089] It is understandable that in other embodiments, in order to limit the positions of all lead wires, the lead wires in step S10 may be threaded inside the bridge wires in step S2 or inside the bridge wires in step S8. Specifically, the threading may be performed by a robot or manually.

[0090] like Figures 6 to 8 As shown, when the coil windings 200 are connected in parallel in the stator core 100, the lead wires 210 of the coil windings 200 are fed into the lead slots 113 and are wound on the winding teeth in sequence, and the bridge wires 220 surround the outer circumference of the stator core 100 at least once. The bridge wires 220 surround the outer circumference of the stator core 100 at least once, which can provide a more secure fixing effect, reduce the risk of displacement of the lead wires 210 due to vibration or mechanical movement, and a clear bridge wire 220 path is more conducive to production.

[0091] Specifically, the winding parallel connection method of the stator assembly includes S1: the starting line 211 of the coil winding 200 is fed into the outlet slot 113 between the first winding tooth 101 and the twelfth winding tooth 112 to form the lead-out line 210;

[0092] S2: After winding the first winding tooth 101 and the second winding tooth 102, the wire is led out from the wire outlet groove 113 between the first winding tooth 101 and the second winding tooth 102 to form the lead wire 210;

[0093] S3: feeding the wire along the wire outlet groove 113 between the third winding tooth 103 and the fourth winding tooth 104, first winding around the third winding tooth 103 and then winding around the fourth winding tooth 104;

[0094] S4: The outgoing wire and the incoming wire along the outgoing wire groove 113 between the fourth winding tooth 104 and the fifth winding tooth 105 form the lead wire 210;

[0095] S5: feeding the wire along the wire outlet groove 113 between the fifth winding tooth 105 and the sixth winding tooth 106, first winding the wire around the fifth winding tooth 105 and then winding the wire around the sixth winding tooth 106;

[0096] S6: Leading out the wire along the wire outlet groove 113 between the fifth winding tooth 105 and the sixth winding tooth 106 to form a lead wire 210;

[0097] S7: feeding the wire along the wire outlet groove 113 between the seventh winding tooth 107 and the eighth winding tooth 108, first winding the wire around the seventh winding tooth 107 and then winding the wire around the eighth winding tooth 108;

[0098] S8: The outgoing wire and the incoming wire along the outgoing wire slot 113 between the eighth winding tooth 108 and the ninth winding tooth 109 form a lead wire 210;

[0099] S9: feeding the wire along the wire outlet groove 113 between the ninth winding tooth 109 and the tenth winding tooth 110;

[0100] S10: After winding the ninth winding tooth 109 and the tenth winding tooth 110, the wire is led out along the wire outlet groove 113 between the ninth winding tooth 109 and the tenth winding tooth 110 to form a lead wire 210;

[0101] S11: feeding the wire along the wire outlet groove 113 between the eleventh winding tooth 111 and the twelfth winding tooth 112, and winding the wire around the eleventh winding tooth 111;

[0102] S12: The wire is led out along the wire outlet groove 113 between the tenth winding tooth 110 and the eleventh winding tooth 111, and crosses the bridge counterclockwise along the end plate limit column 120 to form a bridge wire 220;

[0103] S13: After the bridge wire 220 is wound around the outer side of the lead wire 210 in S1, S2, S4, S6, S8, S10, and S12, it is fed into the wire outlet groove 113 between the eleventh winding tooth 111 and the twelfth winding tooth 112 and wound around the twelfth winding tooth 112;

[0104] S14 : The tail wire 212 of the coil winding 200 is led out along the wire outlet slot 113 between the first winding tooth 101 and the twelfth winding tooth 112 to form the lead wire 210 .

[0105] When the coil windings 200 are connected in parallel, the bridge wire 220 can limit the position of the lead wires 210 in S1, S2, S4, S6, S8, S10, and S12, and reduce the loosening of the lead wires 210 as much as possible. It can be understood that in other embodiments, in order to limit the position of all lead wires, the lead wires in step S14 can be inserted inside the bridge wires in step S12. Specifically, the insertion can be performed by a robot or manually.

[0106] It can be understood that in other embodiments, the number of winding teeth in the stator assembly can also be other suitable numbers, such as 6, 18, etc., and the winding method of the stator assembly can be inferred based on the above winding method.

[0107] Embodiment 2:

[0108] This embodiment discloses a motor, including a rotor and a stator assembly as described in any of the above embodiments that cooperates with the rotor. The lead wires of the motor are effectively fixed by bridge wires, and the fixing method is relatively simple.

[0109] The rotor can be located outside the stator assembly to form an outer rotor motor to prevent the lead wire from interfering with the rotor. Of course, the rotor can also be located inside the stator assembly to form an inner rotor motor.

[0110] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A stator assembly, comprising a stator core (100) and a coil winding (200), wherein the outer ring of the stator core (100) is evenly distributed along the circumference with a plurality of winding teeth for winding the coil winding (200), characterized in that: An outlet slot (113) is formed between two adjacent winding teeth, and the coil winding (200) comprises an outlet wire (210) and a bridge wire (220) for outlet and inlet wires from the outlet slot (113), the outlet wire (210) and the bridge wire (220) being located on the same axial end side of the stator assembly, and the bridge wire (220) being routed along the outer side of the outlet wire (210) to limit the position of the outlet wire (210).

2. The stator assembly according to claim 1, characterized in that: At least two lead-out lines (210) are provided, and at most one lead-out line (210) is provided outside the bridge line (220).

3. The stator assembly according to claim 1, characterized in that: The portion of the lead wire (210) that contacts the bridge wire (220) is bent relative to the lead wire (210).

4. The stator assembly according to claim 1, characterized in that: The inner ring of the stator core (100) is provided with a limiting column (120) along the axial direction, the limiting column (120) is arranged along the circumferential direction of the stator core (100) and is located on the inner side of the lead wire (210), and the bridge wire (220) is routed along the outer side of the limiting column (120) to limit the lead wire (210) between the limiting column (120) and the bridge wire (220).

5. A winding series method using the stator assembly according to any one of claims 1 to 4, characterized in that: The coil windings (200) are connected in series in the stator core (100); the lead wires (210) of the coil windings (200) are fed through the lead slots (113) and wound around winding teeth, and then wound around opposite winding teeth via bridge wires (220); the bridge wires (220) are routed along a half zone of the stator core (100) having the lead wires (210).

6. The series winding method of the stator assembly according to claim 5, characterized in that: A plurality of bridge wires (220) are provided, two adjacent bridge wires (220) at least partially overlap, and at least part of the lead wire (210) is located between the two overlapping bridge wires (220) outside the stator core (100).

7. The series winding method of the stator assembly according to claim 5, characterized in that: The bridge wire (220) is connected to and exits from a wire outlet slot (113) that is not provided with a lead-out wire (210).

8. The series winding method of the stator assembly according to claim 5, characterized in that: The invention is characterized in that the stator assembly comprises twelve winding teeth, and a first winding tooth (101), a second winding tooth (102), a third winding tooth (103), a fourth winding tooth (104), a fifth winding tooth (105), a sixth winding tooth (106), a seventh winding tooth (107), an eighth winding tooth (108), a ninth winding tooth (109), a tenth winding tooth (110), an eleventh winding tooth (111), and a twelfth winding tooth (112) are arranged counterclockwise along the stator core (100), and the stator assembly series winding method comprises S1: a starting line (211) of the coil winding (200) is fed into a wire outlet slot (113) between the first winding tooth (101) and the twelfth winding tooth (112) to form a lead-out line (210); S2: after winding the first winding tooth (101) and the second winding tooth (102), the wire is led out along the wire outlet groove (113) between the first winding tooth (101) and the second winding tooth (102), and then passes through the bridge counterclockwise along the outer side of the lead-out wire (210) in S1 to form a bridge wire (220); S3: the bridge wire (220) enters the wire outlet groove (113) between the seventh winding tooth (107) and the eighth winding tooth (108); S4: After winding the seventh winding tooth (107) and the eighth winding tooth (108), the wire is led out along the wire outlet groove (113) between the eighth winding tooth (108) and the ninth winding tooth (109) and the wire is fed in to form a lead-out wire (210); S5: after winding the ninth winding tooth (109) and the tenth winding tooth (110), the wire is led out along the wire outlet groove (113) between the ninth winding tooth (109) and the tenth winding tooth (110), and then passes through the bridge counterclockwise along the outer side of the lead-out wire (220) in S4 to form a bridge wire (220); S6: the bridge wire (220) enters the wire outlet groove (113) between the third winding tooth (103) and the fourth winding tooth (104); S7: After winding the third winding tooth (103) and the fourth winding tooth (104), the wire is led out along the wire outlet groove (113) between the fourth winding tooth (104) and the fifth winding tooth (105) and the wire is led in to form a lead-out wire (210); S8: After winding the fifth winding tooth (105) and the sixth winding tooth (106), the wire is led out along the wire outlet groove (113) between the fifth winding tooth (105) and the sixth winding tooth (106), and then passes through the bridge counterclockwise along the outer side of the lead-out wire (220) in S7 to form a bridge wire (220); S9: the bridge wire (220) enters the wire outlet groove (113) along the eleventh winding tooth (111) and the twelfth winding tooth (112); S10: After winding the eleventh winding tooth (111) and the twelfth winding tooth (112), the tail wire (212) of the coil winding (200) is led out along the wire outlet groove (113) between the twelfth winding tooth (112) and the first winding tooth (101) to form a lead-out wire (210).

9. A parallel winding method using the stator assembly according to any one of claims 1 to 4, characterized in that: The coil windings (200) are connected in parallel in the stator core (100); the lead wires (210) of the coil windings (200) are fed into the lead wire slots (113) and are sequentially wound on the winding teeth; and the bridge wires (220) surround the outer circumference of the stator core (100) for at least one turn.

10. The parallel winding method of the stator assembly according to claim 9, characterized in that: The stator assembly comprises twelve winding teeth, wherein a first winding tooth (101), a second winding tooth (102), a third winding tooth (103), a fourth winding tooth (104), a fifth winding tooth (105), a sixth winding tooth (106), a seventh winding tooth (107), an eighth winding tooth (108), a ninth winding tooth (109), a tenth winding tooth (110), an eleventh winding tooth (111), and a twelfth winding tooth (112) are arranged counterclockwise along the stator core (100). The stator assembly parallel winding method comprises S1: a starting line (211) of the coil winding (200) is fed into a wire outlet slot (113) between the first winding tooth (101) and the twelfth winding tooth (112) to form a lead-out line (210); S2: After winding the first winding tooth (101) and the second winding tooth (102), a wire is led out from a wire outlet groove (113) between the first winding tooth (101) and the second winding tooth (102) to form a lead wire (210); S3: feeding the wire along the wire outlet groove (113) between the third winding tooth (103) and the fourth winding tooth (104), first winding the wire around the third winding tooth (103) and then winding the wire around the fourth winding tooth (104); S4: The outgoing wire and the incoming wire along the outgoing wire groove (113) between the fourth winding tooth (104) and the fifth winding tooth (105) form a lead-out wire (210); S5: feeding the wire along the wire outlet groove (113) between the fifth winding tooth (105) and the sixth winding tooth (106), first winding the wire around the fifth winding tooth (105) and then winding the wire around the sixth winding tooth (106); S6: Leading out a wire along the wire outlet groove (113) between the fifth winding tooth (105) and the sixth winding tooth (106) to form a lead-out wire (210); S7: feeding the wire along the wire outlet groove (113) between the seventh winding tooth (107) and the eighth winding tooth (108), first winding the wire around the seventh winding tooth (107) and then winding the wire around the eighth winding tooth (108); S8: The outgoing wire and the incoming wire along the outgoing wire groove (113) between the eighth winding tooth (108) and the ninth winding tooth (109) form a lead-out wire (210); S9: feeding the wire along the wire outlet groove (113) between the ninth winding tooth (109) and the tenth winding tooth (110); S10: After winding the ninth winding tooth (109) and the tenth winding tooth (110), a wire is led out along a wire outlet groove (113) between the ninth winding tooth (109) and the tenth winding tooth (110) to form a lead wire (210); S11: feeding the wire along the wire outlet groove (113) between the eleventh winding tooth (111) and the twelfth winding tooth (112), and winding the wire around the eleventh winding tooth (111); S12: The wire is led out along the wire outlet groove (113) between the tenth winding tooth (110) and the eleventh winding tooth (111), and crosses the bridge counterclockwise along the end plate limit column (120) to form a bridge wire (220); S13: After the bridge wire (220) is wound around the outside of the lead wire (210) in S1, S2, S4, S6, S8, S10, and S12, it is fed into the wire outlet groove (113) between the eleventh winding tooth (111) and the twelfth winding tooth (112) and wound around the twelfth winding tooth (112); S14: The tail wire (212) of the coil winding (200) is led out along the wire outlet groove (113) between the first winding tooth (101) and the twelfth winding tooth (112) to form a lead-out wire (210).

11. An electric motor, comprising a rotor, characterized in that: It also includes a stator assembly according to any one of claims 1 to 4 that cooperates with the rotor.

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