Stator structure, winding method, motor and compressor

Abstract

The invention provides a stator structure, a winding method, a motor and a compressor, the stator structure comprises a stator iron core, the stator iron core is provided with a plurality of winding teeth, the cross section of the stator iron core is taken as a projection plane, the stator iron core is divided into six same areas along the circumferential direction, and the six same areas are arranged on the stator iron core. Two oppositely arranged areas in the six areas form a one-phase winding, the one-phase winding comprises a main winding and an auxiliary winding, the main winding is composed of a first tooth and a second tooth which are oppositely arranged, and the auxiliary winding is composed of a third tooth and a fourth tooth which are oppositely arranged; the first teeth are wound at one end of the stator core and then pass through the second teeth for winding, and the third teeth are wound at the other end of the stator core and then pass through the fourth teeth for winding. According to the invention, the technical problem of complex post-treatment wiring processing caused by inter-phase crossing of stator winding wire passing in the prior art can be solved.

Description

Technical Field

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

[0002] Traditional permanent magnet synchronous motor winding methods mainly include single star connection and delta connection. For specific slot-pole combinations, for example, for 12-slot 10-pole motors, conventional series-parallel winding and star-delta connection methods are used. The motor energy efficiency has no obvious advantage over the commonly used 9-slot 6-pole and 12-slot 8-pole motors. When the 12-slot 10-pole motor adopts series-parallel winding, 6 wire crossings are required. The existing 3-layer wire crossing skeleton is used, and there is crossover. A single winding connection method cannot meet the motor efficiency requirements, and there is phase crossover in the winding wire crossing, there are many terminal terminals, and the post-processing is complicated.

[0003] Since the stator winding in the prior art has phase crossing and there are technical problems such as complex post-processing wiring, the present invention studies and designs a stator structure, a winding method, a motor and a compressor. Summary of the invention

[0004] Therefore, the present invention provides a stator structure, a winding method, a motor and a compressor, which can solve the technical problem in the prior art that there is phase crossing in the stator winding, resulting in complicated post-processing wiring processing.

[0005] In order to solve the above problems, the present invention provides a stator structure, including: a stator core, the stator core having a plurality of winding teeth, with the cross section of the stator core as the projection plane, the stator core is divided into six identical areas along the circumferential direction, two areas of the six areas arranged opposite to each other constitute a phase winding, the winding of one phase comprises a main winding and an auxiliary winding, the main winding consists of a first tooth and a second tooth arranged opposite to each other, and the auxiliary winding consists of a third tooth and a fourth tooth arranged opposite to each other; the first tooth is wound at one end of the stator core and then passes the wire to the second tooth for winding, and the third tooth is wound at the other end of the stator core and then passes the wire to the fourth tooth for winding.

[0006] In some embodiments, a first skeleton is disposed at one end of the stator core, and a second skeleton is disposed at the other end of the stator core, and the first skeleton and the second skeleton have the same structure.

[0007] In some embodiments, the main winding is wound by inputting wire from the reverse side of the stator core, and after the first tooth is wound, the wire passes through the first frame to the second tooth for winding, and after the second tooth is wound, the wire comes out from the other end of the stator core, and after the third tooth is wound, the wire passes through the second frame to the fourth tooth for winding, and after the fourth tooth is wound, the wire comes out from one end of the stator core.

[0008] In some embodiments, the main winding and the secondary winding include an inlet terminal, a winding part, a wire passing part, and an outlet terminal. The main winding is star-connected, and the secondary winding is delta-connected, and the main winding and the secondary winding are connected in parallel in each phase.

[0009] In some embodiments, the three-phase windings include a U-phase winding, a W-phase winding and a V-phase winding, and the output end of the main winding of the U-phase winding, the input end of the secondary winding of the U-phase winding and the output end of the secondary winding of the W-phase winding are connected as the lead-out line of the U-phase winding; the output end of the main winding of the V-phase winding, the input end of the secondary winding of the V-phase winding and the output end of the secondary winding of the U-phase winding are connected as the lead-out line of the V-phase winding; the output end of the main winding of the W-phase winding, the input end of the secondary winding of the W-phase winding and the output end of the secondary winding of the V-phase winding are connected as the lead-out line of the W-phase winding.

[0010] In some embodiments, the three-phase windings include a U-phase winding, a W-phase winding and a V-phase winding, and the output end of the main winding of the U-phase winding, the input end of the secondary winding of the U-phase winding and the output end of the secondary winding of the V-phase winding are connected as the lead-out wire of the U-phase winding; the output end of the main winding of the V-phase winding, the input end of the secondary winding of the V-phase winding and the output end of the secondary winding of the W-phase winding are connected as the lead-out wire of the V-phase winding; the output end of the main winding of the W-phase winding, the input end of the secondary winding of the W-phase winding and the output end of the secondary winding of the U-phase winding are connected as the lead-out wire of the W-phase winding.

[0011] In some embodiments, the incoming line ends of the three-phase main windings are star-connected as a common end, the lead wires are arranged at the other end of the stator core, and the common end is arranged at one end of the stator core.

[0012] In some embodiments, the main winding is composed of a winding wound on the first tooth and a winding wound on the second tooth connected in series end to end; the secondary winding is composed of a winding wound on the third tooth and a winding wound on the fourth tooth connected in series end to end.

[0013] In some embodiments, along the circumference of the stator core, the first teeth of the three-phase main windings are spaced 120 degrees apart; and the third teeth of the three-phase auxiliary windings are spaced 120 degrees apart.

[0014] The present invention also provides a winding method for the stator structure, wherein the three-phase windings are U-phase, W-phase and V-phase;

[0015] The main winding of the U phase is wound from the incoming line end, wound counterclockwise on the first tooth, passed through the first frame, and then wound clockwise on the second tooth, and ended at the outgoing line end; the main winding of the V phase is wound from the incoming line end, wound counterclockwise on the first tooth, passed through the first frame, and then wound clockwise on the second tooth, and ended at the outgoing line end; the main winding of the W phase is wound from the incoming line end, wound counterclockwise on the first tooth, passed through the first frame, and then wound clockwise on the second tooth, and ended at the outgoing line end.

[0016] In some embodiments, the auxiliary winding of the U phase is wound from the incoming wire end, wound clockwise on the third tooth, passed through the second skeleton, and then wound counterclockwise on the fourth tooth, and ended at the outgoing wire end); the auxiliary winding of the V phase is wound from the incoming wire end, wound clockwise on the third tooth, passed through the second skeleton, and then wound counterclockwise on the fourth tooth, and ended at the outgoing wire end; the auxiliary winding of the W phase is wound from the incoming wire end, wound clockwise on the third tooth, passed through the second skeleton, and then wound counterclockwise on the fourth tooth, and ended at the outgoing wire end.

[0017] In some embodiments, the main winding inlet of the U phase, the main winding inlet of the V phase and the main winding inlet of the W phase are star-connected as a common terminal; the main winding outlet of the U phase, the secondary winding inlet of the U phase and the secondary winding outlet of the W phase are connected as the U phase lead-out line; the main winding outlet of the V phase, the secondary winding inlet of the V phase and the secondary winding outlet of the U phase are connected as the V phase lead-out line; the main winding outlet of the W phase, the secondary winding inlet of the W phase and the secondary winding outlet of the V phase are connected as the W phase lead-out line.

[0018] The present invention also provides a motor, comprising the aforementioned stator structure.

[0019] The present invention also provides a compressor, comprising the aforementioned stator structure.

[0020] A stator structure, winding method, motor and compressor provided by the present invention have the following beneficial effects:

[0021] The first tooth is wound on one end of the stator core and then passed through the wire to the second tooth for winding, and the third tooth is wound on the other end of the stator core and then passed through the wire to the fourth tooth for winding. Without changing the symmetry of the magnetic circuit, the back electromotive force is improved and the motor efficiency is improved, thereby solving the problems of low motor efficiency, winding crossing and complex post-processing wiring in the traditional connection method. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0023] Figure 1 The structure of the stator structure of the present invention is schematically shown in FIG. Figure 1 ;

[0024] Figure 2 The structure of the stator structure of the present invention is schematically shown in FIG. Figure 2 ;

[0025] Figure 3 is a schematic diagram of the winding at the other end of the stator core in the stator structure of the present invention;

[0026] Figure 4 It is a diagram of winding parallel connection in the stator structure of the present invention;

[0027] Figure 5 It is a schematic diagram of the winding at one end of the stator core in the stator structure of the present invention.

[0028] The accompanying drawings are marked as follows:

[0029] 1. First tooth; 2. Second tooth; 3. Third tooth; 4. Fourth tooth. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0032] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0033] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0034] See also Figure 1-5 As shown, according to an embodiment of the present invention, a stator structure is provided, comprising: a stator core, the stator core having a plurality of winding teeth, with the cross section of the stator core as a projection plane, the stator core is divided into six identical areas along the circumferential direction, two areas of the six areas arranged opposite to each other constitute a one-phase winding, the one-phase winding comprises a main winding and an auxiliary winding, the main winding consists of a first tooth 1 and a second tooth 2 arranged opposite to each other, the auxiliary winding consists of a third tooth 3 and a fourth tooth 4 arranged opposite to each other; the first tooth 1 is wound at one end of the stator core and then passes through the wire to the second tooth 2 for winding, the third tooth 3 is wound at the other end of the stator core and then passes through the wire to the fourth tooth 4 for winding. In this technical solution, the first tooth 1 is wound on one end of the stator core and then passed through the wire to the second tooth 2 for winding, and the third tooth 3 is wound on the other end of the stator core and then passed through the wire to the fourth tooth 4 for winding. Without changing the symmetry of the magnetic circuit, the back electromotive force is improved and the efficiency of the motor is improved, thereby solving the problems of low efficiency of motors with traditional connection methods, winding crossing and complex post-processing wiring.

[0035] In some embodiments, a first skeleton is disposed at one end of the stator core, and a second skeleton is disposed at the other end of the stator core, and the first skeleton and the second skeleton have the same structure.

[0036] The stator core in the stator structure of the present invention is provided with 12 winding teeth arranged at intervals in the circumferential direction, each of the winding teeth is spaced 30 degrees apart, and the winding is axially wound on the winding teeth. For a three-phase AC motor, each phase winding is wound around 4 winding teeth, with one winding tooth as the reference tooth 1, and the winding wound on the corresponding tooth 1 opposite to it at a spatial position of 180 degrees constitutes a set of windings, called the main winding; the winding wound on another reference tooth 2 adjacent to the corresponding tooth 1 in a certain direction and the corresponding tooth 2 opposite to it at a spatial position of 180 degrees constitutes another set of windings, called the auxiliary winding.

[0037] The main winding and the auxiliary winding of the three-phase AC motor include an inlet terminal, a winding part, a wire passing part, and an outlet terminal. The main winding is star-connected, the auxiliary winding is delta-connected, and the main winding and the auxiliary winding of each phase are connected in parallel.

[0038] For a 12-slot 10-pole three-phase AC motor, conventional winding connection methods can no longer meet motor performance requirements. The stator structure of the present invention can improve the back electromotive force and motor efficiency without changing the symmetry of the magnetic circuit. At the same time, the stator structure of the present invention uses the front and back sides of the iron core to wind and pass the wires separately, making the winding passing and post-processing wiring simpler, simplifying the skeleton structure, and using the same skeleton at both ends to reduce the skeleton mold cost.

[0039] The stator structure of the present invention, the motor stator includes a stator core and windings wound on its winding teeth. The stator core has 12 winding teeth evenly distributed in the circumferential direction, and the four windings on two adjacent winding teeth and two winding teeth 180 degrees symmetrical in space are one phase winding of the three-phase motor, and each phase winding includes a main winding and a secondary winding, the main winding is composed of a reference tooth and a winding on a corresponding tooth, and the secondary winding is composed of a reference tooth and a winding on a corresponding tooth.

[0040] In some embodiments, the main winding starts with the wire entering from the back side of the stator core, the first tooth 1 is wound and then passed through the first frame to the second tooth 2 for winding, the second tooth 2 is wound and then the wire is led out from the other end of the stator core, the third tooth 3 is wound and then passed through the second frame to the fourth tooth 4 for winding, and the fourth tooth 4 is wound and then the wire is led out from one end of the stator core. The front and back sides of the core are used for winding and passing the wire separately, which makes the winding passing and post-processing wiring simpler, simplifies the frame structure, and uses the same frame at both ends to reduce the frame mold cost.

[0041] The stator structure of the present invention is suitable for a stator with a tooth slot number of S, a pole number of 2*P, and a motor phase number of m, satisfying: S=2*P±2=4*m.

[0042] In some embodiments, the main winding and the secondary winding include an inlet terminal, a winding part, a wire passing part, and an outlet terminal. The main winding is star-connected, and the secondary winding is delta-connected, and the main winding and the secondary winding are connected in parallel in each phase.

[0043] The star connection of a three-phase circuit refers to a connection method in which three ends are connected together to lead out the neutral line, and three live wires are led out from three heads. The angle connection refers to a connection method in which the end of each phase in a three-phase power supply or load is connected to the front end of the subsequent phase, and then the end line is led out from three connection points. The main winding adopts a star connection, and the secondary winding adopts an angle connection. The main winding and the secondary winding of each phase are connected in parallel. The winding winding method, according to this scheme, has a higher winding coefficient. The use of a mixed star and angle winding can increase the winding coefficient, eliminate the magnetomotive force subharmonics of 12S10P, reduce the iron loss of the motor, and improve efficiency.

[0044] In some embodiments, the three-phase windings include a U-phase winding, a W-phase winding and a V-phase winding, and the output end of the main winding of the U-phase winding, the input end of the secondary winding of the U-phase winding and the output end of the secondary winding of the W-phase winding are connected as the lead-out line of the U-phase winding; the output end of the main winding of the V-phase winding, the input end of the secondary winding of the V-phase winding and the output end of the secondary winding of the U-phase winding are connected as the lead-out line of the V-phase winding; the output end of the main winding of the W-phase winding, the input end of the secondary winding of the W-phase winding and the output end of the secondary winding of the V-phase winding are connected as the lead-out line of the W-phase winding.

[0045] In some embodiments, the three-phase windings include a U-phase winding, a W-phase winding and a V-phase winding, and the output end of the main winding of the U-phase winding, the input end of the secondary winding of the U-phase winding and the output end of the secondary winding of the V-phase winding are connected as the lead-out wire of the U-phase winding; the output end of the main winding of the V-phase winding, the input end of the secondary winding of the V-phase winding and the output end of the secondary winding of the W-phase winding are connected as the lead-out wire of the V-phase winding; the output end of the main winding of the W-phase winding, the input end of the secondary winding of the W-phase winding and the output end of the secondary winding of the U-phase winding are connected as the lead-out wire of the W-phase winding.

[0046] Winding according to this method avoids winding and wire crossing, and the post-processing wiring is simple. The same frame can be used at both ends of the motor to reduce mold opening costs.

[0047] In some embodiments, the incoming line ends of the three-phase main windings are star-connected as a common end, the lead wires are arranged at the other end of the stator core, and the common end is arranged at one end of the stator core.

[0048] In some embodiments, the main winding is composed of a winding wound on the first tooth 1 and a winding wound on the second tooth 2 connected in series end to end; the secondary winding is composed of a winding wound on the third tooth 3 and a winding wound on the fourth tooth 4 connected in series end to end.

[0049] The two tooth windings in the same-phase main winding and auxiliary winding are connected in series, and the three-phase motor windings are symmetrical in three phases and spaced 120 degrees apart.

[0050] In some embodiments, along the circumference of the stator core, the first teeth 1 of the three-phase main windings are spaced 120 degrees apart; and the third teeth 3 of the three-phase auxiliary windings are spaced 120 degrees apart.

[0051] The main winding is composed of a winding wound on the reference tooth 1 and a winding wound on the corresponding tooth 1 connected in series end to end; the secondary winding is composed of a winding wound on the reference tooth 2 and a winding wound on the corresponding tooth 2 connected in series end to end.

[0052] The reference teeth of the three-phase main winding are spaced 120 degrees apart from each other; the reference teeth of the three-phase auxiliary winding are spaced 120 degrees apart from each other. The main winding starts winding by feeding in the back side of the stator core, and after winding on the reference teeth, passes the wire through the first frame to the corresponding teeth for winding. After winding, the wire comes out from the front side of the stator core. The auxiliary winding starts winding by feeding in the front side of the stator core, and after winding on the reference teeth, passes the wire through the second frame to the corresponding teeth for winding. After winding, the wire comes out from the front side of the stator core. The first frame and the second frame have the same structure and are respectively installed on the front and back sides of the stator core. The outlet end of the U-phase main winding, the inlet end of the U-phase secondary winding and the outlet end of the W-phase secondary winding are connected as the U-phase lead-out line; the outlet end of the V-phase main winding, the inlet end of the V-phase secondary winding and the outlet end of the U-phase secondary winding are connected as the V-phase lead-out line; the outlet end of the W-phase main winding, the inlet end of the W-phase secondary winding and the outlet end of the V-phase secondary winding are connected as the W-phase lead-out line. Or, the outlet end of the U-phase main winding, the inlet end of the U-phase secondary winding and the outlet end of the V-phase secondary winding are connected as the U-phase lead-out line; the outlet end of the V-phase main winding, the inlet end of the V-phase secondary winding and the outlet end of the W-phase secondary winding are connected as the V-phase lead-out line; the outlet end of the W-phase main winding, the inlet end of the W-phase secondary winding and the outlet end of the U-phase secondary winding are connected as the W-phase lead-out line. The inlet end of the three-phase main winding is star-connected as a common end. The main winding is wound counterclockwise on the reference tooth, and the corresponding tooth is wound clockwise. The secondary winding is wound clockwise on the reference tooth, and the corresponding tooth is wound counterclockwise. In this way, the winding coefficient is higher. The lead wire is set on the front side of the iron core. The common terminal is set on the back side of the iron core.

[0053] The present invention also provides a winding method for the stator structure, wherein the three-phase windings are U-phase, W-phase and V-phase;

[0054] The main winding of the U phase is wound from the incoming line end, wound counterclockwise on the first tooth 1, passed through the first frame, and then wound clockwise on the second tooth 2, and ended at the outgoing line end; the main winding of the V phase is wound from the incoming line end, wound counterclockwise on the first tooth 1, passed through the first frame, and then wound clockwise on the second tooth 2, and ended at the outgoing line end; the main winding of the W phase is wound from the incoming line end, wound counterclockwise on the first tooth 1, passed through the first frame, and then wound clockwise on the second tooth 2, and ended at the outgoing line end.

[0055] The U-phase main winding is wound from the incoming terminal UZJ, wound counterclockwise on the reference tooth, passed the wire through the first frame on the front of the stator core, and then wound clockwise on the corresponding tooth, and ended at the outgoing terminal UZC; the V-phase main winding is wound from the incoming terminal VZJ, wound counterclockwise on the reference tooth, passed the wire through the first frame on the front of the stator core, and then wound clockwise on the corresponding tooth, and ended at the outgoing terminal VZC; the W-phase main winding is wound from the incoming terminal WZJ, wound counterclockwise on the reference tooth, passed the wire through the first frame on the front of the stator core, and then wound clockwise on the corresponding tooth, and ended at the outgoing terminal WZC.

[0056] In some embodiments, the auxiliary winding of the U phase is wound from the incoming line end, wound clockwise on the third tooth 3, passed through the second skeleton, and then wound counterclockwise on the fourth tooth 4, and ended at the outgoing line end; the auxiliary winding of the V phase is wound from the incoming line end, wound clockwise on the third tooth 3, passed through the second skeleton, and then wound counterclockwise on the fourth tooth 4, and ended at the outgoing line end; the auxiliary winding of the W phase is wound from the incoming line end, wound clockwise on the third tooth 3, passed through the second skeleton, and then wound counterclockwise on the fourth tooth 4, and ended at the outgoing line end.

[0057] The U-phase auxiliary winding is wound from the incoming terminal UFJ, wound clockwise on the reference tooth, passed the wire through the second frame on the reverse side of the stator core, and then wound counterclockwise on the corresponding tooth, and ended at the outgoing terminal UFC; the V-phase auxiliary winding is wound from the incoming terminal VFJ, wound clockwise on the reference tooth, passed the wire through the second frame on the reverse side of the stator core, and then wound counterclockwise on the corresponding tooth, and ended at the outgoing terminal VFC; the W-phase auxiliary winding is wound from the incoming terminal WFJ, wound clockwise on the reference tooth, passed the wire through the second frame on the reverse side of the stator core, and then wound counterclockwise on the corresponding tooth of the winding tooth, and ended at the outgoing terminal WFC.

[0058] The reference teeth can be fixed clockwise or counterclockwise, but the winding directions of the two teeth of the same winding are opposite, and the winding directions of the adjacent winding teeth of different windings are opposite. The synthetic potential generated by the adjacent two teeth windings of the same phase is the largest, and the synthetic potential generated by the full-phase winding is the largest.

[0059] In some embodiments, the main winding inlet of the U phase, the main winding inlet of the V phase and the main winding inlet of the W phase are star-connected as a common terminal; the main winding outlet of the U phase, the secondary winding inlet of the U phase and the secondary winding outlet of the W phase are connected as the U phase lead-out line; the main winding outlet of the V phase, the secondary winding inlet of the V phase and the secondary winding outlet of the U phase are connected as the V phase lead-out line; the main winding outlet of the W phase, the secondary winding inlet of the W phase and the secondary winding outlet of the V phase are connected as the W phase lead-out line.

[0060] The U-phase main winding inlet terminal UZJ, the V-phase main winding inlet terminal VZJ and the W-phase main winding inlet terminal WZJ are star-connected as a common terminal. The U-phase main winding outlet terminal UZC, the U-phase auxiliary winding inlet terminal UFJ and the W-phase auxiliary winding outlet terminal WFC are connected as the U-phase lead-out line; the V-phase main winding outlet terminal VZC, the V-phase auxiliary winding inlet terminal VFJ and the U-phase auxiliary winding outlet terminal UFC are connected as the V-phase lead-out line; the W-phase main winding outlet terminal WZC, the W-phase auxiliary winding inlet terminal WFJ and the V-phase auxiliary winding outlet terminal VFC are connected as the W-phase lead-out line.

[0061] In the same motor, half of the windings are star-connected, the other half are delta-connected and finally connected in parallel, which can increase the back electromotive force and improve the motor efficiency without changing the symmetry of the magnetic circuit. The stator structure of the present invention adopts double-sided winding and wire passing, and the existing skeleton can be directly used to reduce the cost of skeleton mold opening. The double-sided winding makes the rear-end wiring simpler.

[0062] The stator structure of the present invention utilizes the mutual cooperation between the main and auxiliary windings, and can achieve different back electromotive force requirements by setting the number of turns of the main and auxiliary windings. At the same time, the main winding and auxiliary winding passing parts are divided into two skeletons for passing the wires. Each skeleton only needs to pass the wire once per phase, which effectively avoids phase crossing during passing the wires and greatly simplifies the structure of the skeleton.

[0063] In the stator structure of the present invention, the stator core uses 12 winding teeth, and the 12 winding teeth are the same, and the direction and the composition of the teeth in each phase are not unique. The embodiment of the stator structure of the present invention provides one of the optimal wiring methods.

[0064] The present invention also provides a motor, comprising the above-mentioned stator structure.

[0065] The present invention also provides a compressor, comprising the above-mentioned stator structure.

[0066] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A stator structure, characterized in that: include: A stator core, the stator core having a plurality of winding teeth, with the cross section of the stator core as a projection plane, the stator core is divided into six identical areas along the circumferential direction, two areas of the six areas arranged opposite to each other form a phase winding, the winding of one phase comprises a main winding and an auxiliary winding, the main winding comprises a first tooth (1) and a second tooth (2) arranged opposite to each other, the auxiliary winding comprises a third tooth (3) and a fourth tooth (4) arranged opposite to each other; the first tooth (1) is wound at one end of the stator core and then passes through the wire to the second tooth (2) for winding, and the third tooth (3) is wound at the other end of the stator core and then passes through the wire to the fourth tooth (4) for winding.

2. The stator structure according to claim 1, characterized in that: A first frame is disposed at one end of the stator core, and a second frame is disposed at the other end of the stator core. The first frame and the second frame have the same structure.

3. The stator structure according to claim 2, characterized in that: The main winding is wound by feeding the wire from the reverse side of the stator core, the first tooth (1) is wound and then the wire passes through the first frame to the second tooth (2) for winding, the second tooth (2) is wound and then the wire exits from the other end of the stator core, the third tooth (3) is wound and then the wire passes through the second frame to the fourth tooth (4) for winding, and the fourth tooth (4) is wound and then the wire exits from one end of the stator core.

4. The stator structure according to claim 1, characterized in that: The main winding and the secondary winding include an incoming line terminal, a winding part, a line passing part, and an outgoing line terminal. The main winding adopts a star connection, and the secondary winding adopts a delta connection. The main winding and the secondary winding of each phase are connected in parallel.

5. The stator structure according to claim 4, characterized in that: The three-phase windings include a U-phase winding, a W-phase winding and a V-phase winding. The output end of the main winding of the U-phase winding, the input end of the secondary winding of the U-phase winding and the output end of the secondary winding of the W-phase winding are connected as the lead-out wire of the U-phase winding; the output end of the main winding of the V-phase winding, the input end of the secondary winding of the V-phase winding and the output end of the secondary winding of the U-phase winding are connected as the lead-out wire of the V-phase winding; the output end of the main winding of the W-phase winding, the input end of the secondary winding of the W-phase winding and the output end of the secondary winding of the V-phase winding are connected as the lead-out wire of the W-phase winding.

6. The stator structure according to claim 4, characterized in that: The three-phase windings include a U-phase winding, a W-phase winding and a V-phase winding. The output end of the main winding of the U-phase winding, the input end of the secondary winding of the U-phase winding and the output end of the secondary winding of the V-phase winding are connected as the lead-out wire of the U-phase winding; the output end of the main winding of the V-phase winding, the input end of the secondary winding of the V-phase winding and the output end of the secondary winding of the W-phase winding are connected as the lead-out wire of the V-phase winding; the output end of the main winding of the W-phase winding, the input end of the secondary winding of the W-phase winding and the output end of the secondary winding of the U-phase winding are connected as the lead-out wire of the W-phase winding.

7. The stator structure according to claim 4, characterized in that: The incoming end of the three-phase main winding is star-connected as a common end, the lead-out line is arranged at the other end of the stator core, and the common end is arranged at one end of the stator core.

8. The stator structure according to claim 1, characterized in that: The main winding is composed of a winding wound on the first tooth (1) and a winding wound on the second tooth (2) connected in series end to end; the secondary winding is composed of a winding wound on the third tooth (3) and a winding wound on the fourth tooth (4) connected in series end to end.

9. The stator structure according to claim 1, characterized in that: Along the circumference of the stator core, the first teeth (1) of the three-phase main windings are spaced 120 degrees apart; and the third teeth (3) of the three-phase auxiliary windings are spaced 120 degrees apart.

10. The winding method of a stator structure according to any one of claims 1 to 9, characterized in that: The three-phase windings are U phase, W phase and V phase; The main winding of the U phase is wound from the incoming line end, wound counterclockwise on the first tooth (1), wound clockwise on the second tooth (2) after passing the wire through the first frame, and ended at the outgoing line end; the main winding of the V phase is wound from the incoming line end, wound counterclockwise on the first tooth (1), wound clockwise on the second tooth (2) after passing the wire through the first frame, and ended at the outgoing line end; the main winding of the W phase is wound from the incoming line end, wound counterclockwise on the first tooth (1), wound clockwise on the second tooth (2) after passing the wire through the first frame, and ended at the outgoing line end.

11. The winding method of the stator structure according to claim 10, characterized in that: The auxiliary winding of the U phase is wound from the incoming line end, wound clockwise on the third tooth (3), passed through the second frame, and then wound counterclockwise on the fourth tooth (4), and the winding ends at the outgoing line end; the auxiliary winding of the V phase is wound from the incoming line end, wound clockwise on the third tooth (3), passed through the second frame, and then wound counterclockwise on the fourth tooth (4), and the winding ends at the outgoing line end; the auxiliary winding of the W phase is wound from the incoming line end, wound clockwise on the third tooth (3), passed through the second frame, and then wound counterclockwise on the fourth tooth (4), and the winding ends at the outgoing line end.

12. The winding method of the stator structure according to claim 10, characterized in that: The main winding inlet of the U phase, the main winding inlet of the V phase and the main winding inlet of the W phase are star-connected as a common terminal; the main winding outlet of the U phase, the secondary winding inlet of the U phase and the secondary winding outlet of the W phase are connected as the U phase lead-out line; the main winding outlet of the V phase, the secondary winding inlet of the V phase and the secondary winding outlet of the U phase are connected as the V phase lead-out line; the main winding outlet of the W phase, the secondary winding inlet of the W phase and the secondary winding outlet of the V phase are connected as the W phase lead-out line.

13. A motor, characterized in that: The invention comprises the stator structure according to any one of claims 1 to 9.

14. A compressor, characterized in that: The invention comprises the stator structure according to any one of claims 1 to 9.

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