Stator and winding method thereof, motor and compressor

Abstract

The application relates to a stator and a winding method thereof, a motor and a compressor. The stator comprises a plurality of bodies connected in rotation and a coil wound around the bodies. The plurality of bodies are divided into a plurality of sub-zones along a first direction. Each sub-zone comprises a plurality of body groups arranged in sequence. Body groups arranged in the same sequence in different sub-zones are the same body group. Each body group comprises at least two bodies. The winding method comprises: before the coil is wound from a body group in one sub-zone to the same body group in another sub-zone, the coil is pre-wound on any one or more bodies between the two body groups. The stator, the winding method thereof, the motor and the compressor can avoid the problem of loose wire caused by winding the stator into a circle, and improve the quality of the motor.

Description

Technical Field

[0001] This application relates to the field of electric motors, and more particularly to a stator and its winding method, an electric motor, and a compressor. Background Technology

[0002] With increasingly fierce competition in the motor market, fully automatic stator winding machines are generally used to improve production efficiency and reduce production time, replacing manual winding. To complement these automatic machines, wire-wound stators often employ plastic coating or a bobbin, replacing the traditional method of using insulating groove paper or spacer paper for insulation, significantly improving production efficiency. However, in actual production, after stator winding, the stator needs to be rounded. Inspection of the rounded stators has revealed issues such as loose wire, and even instances of enameled wire breaking out, leading to poor motor withstand voltage and affecting motor quality. Summary of the Invention

[0003] The purpose of this application is to provide a stator and its winding method, a motor and a compressor, which can avoid the problem of loose wire caused by the stator winding into a circle and improve the quality of the motor.

[0004] Therefore, in a first aspect, embodiments of this application provide a method for winding a stator, wherein the stator includes a plurality of bodies rotatably connected and a coil wound around the bodies, the plurality of bodies are divided into a plurality of partitions along a first direction, each partition includes a plurality of sequentially arranged body groups, and body groups with the same arrangement order in different partitions are considered the same body group, each body group includes at least two bodies, and the winding method includes:

[0005] Before the coil is wound from the body group in one partition to the same body group in another partition, the coil is pre-wound on any one or more of the bodies between the two body groups.

[0006] In one possible implementation, the coil is wound from one body group in one partition to the same body group in an adjacent partition, wherein there are two bodies between the two identical body groups, and the coil is pre-wound on either body.

[0007] There are two or more bodies between two identical body groups, and the coil is pre-wound on one or more bodies located in the middle.

[0008] In one possible implementation, the winding direction of the coil during pre-winding is the same as the winding direction of the corresponding body when winding the coil.

[0009] In a possible implementation, the pre-winding includes:

[0010] According to the number of the bodies between the same body group in two partitions, a body in the middle is selected, and the body is wound in a first winding direction for one or an integer multiple of one turn, the first winding direction being the same as the direction when the corresponding body winds the coil.

[0011] In a possible implementation, when winding the coil in the same partition, the coil is sequentially wound on the bodies in each body group, and the winding directions of adjacent bodies in the same body group are opposite, and the winding directions of the bodies arranged in the same order in adjacent body groups are opposite.

[0012] In a possible implementation, the body includes a core and a connecting frame connected in a second direction, the core is an electrically conductive member, the connecting frame is an insulating member, a plurality of connecting frames are rotationally connected in the first direction, the coil is wound on the core in an insulating manner to form a winding, and the connecting frame includes a protruding portion, and the winding method includes:

[0013] The pre-winding is performed on the protruding portion.

[0014] In a possible implementation, the partition includes adjacent first and second partitions, each of the partitions includes adjacent first and second body groups, and the winding method includes:

[0015] After the coil is wound on adjacent cores in the first body group in the first partition in opposite directions, the coil is pre-wound on any protruding portion between the first body groups in the two partitions, and then the coil is wound on adjacent cores in the first body group in the second partition in opposite directions.

[0016] After the coil is wound on adjacent cores in the second body group in the first partition in opposite directions, the coil is pre-wound on any protruding portion between the second body groups in the two partitions, and then the coil is wound on adjacent cores in the second body group in the second partition in opposite directions.

[0017] In the first and second partitions, the winding directions of the coils on the cores arranged in the same order in the first and second body groups are opposite.

[0018] In a possible implementation, the partition further includes a third partition, the second partition is located between the first and third partitions in the first direction, and the winding method includes:

[0019] After the coil is wound in opposite directions on the adjacent cores in the first body group in the second subzone, the coil is pre-wound on any of the protruding portions of the first body group in the third subzone, and then wound in opposite directions on the adjacent cores in the second body group in the third subzone.

[0020] After the coil is wound in opposite directions on the adjacent cores in the second body group in the second subzone, the coil is pre-wound on any of the protruding portions of the first body group in the third subzone, and then wound in opposite directions on the adjacent cores in the second body group in the third subzone.

[0021] In the third subzone, the winding directions of the coil on the cores with the same arrangement sequence in the first body group and the second body group are the same as those in the first subzone.

[0022] In a second aspect, the embodiments of the present application provide a stator, which comprises a plurality of bodies connected in rotation and a coil wound around the bodies. The plurality of bodies are divided into a plurality of subzones along a first direction, each of the subzones comprises a plurality of body groups arranged in sequence, and the body groups with the same arrangement sequence in different subzones are the same body group. Each of the body groups comprises at least two bodies, and the bodies comprise:

[0023] a core configured as a conductive member;

[0024] a connecting frame configured as an insulating member, a plurality of the connecting frames are connected in rotation along the first direction, the core is connected to the connecting frame along a second direction, and the connecting frame comprises a protruding portion.

[0025] In the process of winding the coil from the body group in one subzone to the same body group in another subzone, the coil is pre-wound on the protruding portion of any one or more of the bodies between the two wound body groups.

[0026] In a possible implementation, the protruding portion is provided with a clamping groove, and when pre-wound, the coil is wound in the clamping groove.

[0027] The clamping grooves are oppositely arranged on both sides of the protruding portion along the first direction, or

[0028] The clamping grooves are arranged in a circumferential ring around the protruding portion.

[0029] In a third aspect, the embodiments of the present application provide an electric machine comprising the stator described in any one of the above.

[0030] In a fourth aspect, the embodiments of the present application provide a compressor comprising the electric machine described in any one of the above.

[0031] According to the stator and the winding method thereof, the motor and the compressor provided by the embodiments of the present application, the stator comprises a plurality of bodies connected in rotation and a coil wound around the bodies. The plurality of bodies connected in the first direction are divided into a plurality of sub-zones, each of which comprises a plurality of body groups arranged in sequence. The body groups arranged in the same sequence in different sub-zones are the same body group, and each body group comprises at least two bodies. When the coil needs to be wound around the body groups in different sub-zones, one or more bodies are selected from the bodies in the sub-zone to be crossed, and the coil is pre-wound on the selected body. In this way, the distance crossed by the coil in the first direction is not too large, and the rotation between the bodies does not cause the coil to be too loose or even to fall off when the plurality of bodies are rotated to form the stator. Thus, the pre-winding method when crossing the sub-zone solves the problem of loose coil after the stator is wound and formed into a circle, avoids the coil from falling off, and improves the quality of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor. In addition, the same components are marked with the same reference numerals in the drawings, and the drawings are not drawn according to the actual scale.

[0033] Figure 1 A structure schematic diagram of a stator straight arrangement provided by an embodiment of the present application is shown, wherein the direction indicated by the arrow L is the first direction;

[0034] Figure 2 A flowchart of a stator winding method provided by an embodiment of the present application is shown;

[0035] Figure 3 A structure schematic diagram of a stator after being formed into a circle provided by an embodiment of the present application is shown;

[0036] Figure 4 A structure schematic diagram of a stator straight arrangement provided by an embodiment of the present application is shown, wherein the direction indicated by the arrow L is the first direction; Figure 3

[0037] Figure 5 A structure schematic diagram of a stator straight arrangement provided by an embodiment of the present application is shown, wherein the direction indicated by the arrow L is the first direction; DETAILED DESCRIPTION

[0038] ​In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0039] Figure 1 A structure schematic diagram of a stator straight arrangement provided by an embodiment of the present application is shown, wherein the direction indicated by the arrow L is a first direction. Figure 2 A flow chart of a winding method of a stator provided by an embodiment of the present application is shown.

[0040] Referring to Figure 1 and Figure 2 , the stator comprises a plurality of bodies 1 connected in rotation and a coil 2 wound around the bodies 1, the coil 2 is wound around the bodies 1 to form a winding of the stator. The plurality of bodies 1 are divided into a plurality of sub-zones A along the first direction L, each sub-zone A comprises a plurality of body groups B arranged in sequence, and the body groups B arranged in sequence in different sub-zones are the same body group B, and each body group B comprises at least two bodies 1.

[0041] Optionally, the stator is used to cooperate with a rotor to form part of a core component in an electric machine. In the electric machine, according to different pole numbers, phase numbers and the like, the number of the bodies 1 provided, the number of the sub-zones A divided, the number of the body groups B formed in each sub-zone A, the number of the bodies 1 in each body group B and the like will also be different, which are not specifically limited here.

[0042] It can be understood that when winding the stator, a plurality of bodies 1 arranged along the first direction L will be wound by a full-automatic winding machine to form a winding in a certain winding method, and then the plurality of bodies 1 arranged in straight lines are relatively rotated by a certain angle to arrange the plurality of bodies 1 in a circumferential direction to form a circle. Among them, the winding method adopted by the winding formed before the stator forms a circle can be various, according to the shape of the coil winding and the embedding and wiring mode, which can be divided into centralized type and distributed type. In order to ensure that the electric machine has high efficiency and operation performance, the distributed winding will be adopted, and the distributed winding further comprises a concentric winding and a lap winding, which are not described in detail here.

[0043] Optionally, to accommodate fully automatic winding machines, plastic coating or a bobbin is often used instead of the original method of insulation using insulating groove paper or spacer paper, such as the plastic coating method used in this application, but it is not limited to this. The coil 2 is made of conductive metal wire such as copper and covered with an insulating layer, which can be enameled wire, and will not be described in detail here. Furthermore, the diameter of the selected coil 2 and the density when winding it in the body 1 are related to the number of poles, the number of phases, and the winding method of the stator, and can be selected adaptively according to the actual situation, without specific limitations here.

[0044] This application provides a stator winding method, which includes: before winding the coil 2 from a body group B in one partition A to the same body group B in another partition A, the coil 2 is pre-wound on one or more body groups 1 between the two body groups B. When winding the coil 2 onto the body 1, if the coil 2 needs to cross from one partition A to another body group B in another partition A, one or more body groups 1 are selected from the multiple body groups 1 to be crossed, and pre-wound on them. This ensures that during cross-partition winding, the distance crossed by the coil 2 along the first direction L is not too large, and when the multiple body groups 1 are rotated to form a circle to create the stator, the rotation between the body groups 1 will not cause the wound coil to be too loose or even fall off. Thus, by using this cross-partition pre-winding method, the problem of loose wire after forming a circle is solved, wire derailment is avoided, and the quality of the motor is improved.

[0045] Optionally, when coil 2 is wound across zones from one zone A to another, it can cross over to an adjacent zone A, or it can cross over to another zone A separated by one or more zones A; no specific limitation is made here. Preferably, to ensure the winding effect, coil 2 is generally wound sequentially across zones to the next adjacent zone A when winding across zones. The following describes the winding method of the stator of this application in detail using this sequential winding method as an example.

[0046] In an optional embodiment, in different partitions A, the number of bodies 1 arranged in the same body group B can be two or more than two, and when the number is more than two, the number is preferably an integer multiple of two, which is not limited herein. When crossing from one partition A to another partition A, the number of bodies 1 spaced between the two same body groups B needing to be wound is at least two, and when the number is more than two, the number is generally set to an integer multiple of two. When the number is two, pre-winding can be performed on any one of the bodies 1, or pre-winding can also be performed on both of the bodies 1, which is not limited herein. When the number is more than two, pre-winding can also be performed on several bodies 1, but in order to avoid too much winding causing the coil 2 to easily jump out, one or more bodies 1 located in the middle of the plurality of bodies 1 spaced apart can be selected for pre-winding.

[0047] Optionally, when one or more bodies 1 located in the middle are selected for pre-winding, the number of bodies 1 between the two body groups B crossing the partitions is an integer multiple of two, so the number of bodies 1 located in the middle is two, and when pre-winding is performed, one of the two bodies 1 located in the middle can be selected for pre-winding, or both of the bodies 1 can be selected for pre-winding, which is not limited herein.

[0048] It can be understood that the coil 2 has a winding direction when pre-wound on one or more bodies 1, and the body 1 selected for pre-winding also winds the coil 2, and the pre-winding direction can be the same as or opposite to the direction in which the body 1 winds the coil, which is not limited herein. Preferably, in order to ensure good use effect, the winding direction of the coil 2 when pre-wound is the same as the winding direction of the corresponding body 1 when winding the coil. The stator winding method of the present application is described in detail below with the example that the pre-winding direction is the same as the winding direction of the body 1 when winding the coil 2, and subsequent examples will not be emphasized separately.

[0049] In an optional embodiment, pre-winding includes: according to the number of bodies 1 between the same body group B in the two partitions A, selecting one body 1 located in the middle, and winding the body 1 in a first winding direction a1 for one turn or an integer multiple of one turn for pre-winding, and the first winding direction is the same as the direction of the corresponding body 1 when winding the coil 2. Preferably, the body 1 is wound in the first winding direction a1 for one turn, so as to avoid long-distance overwinding and coil falling caused by too much winding when pre-winding.

[0050] It can be understood that, in pre-winding, one or more bodies 1 at a suitable position can be selected for pre-winding according to the number of bodies 1 to be crossed and the actual distance, etc. When multiple bodies 1 are selected for pre-winding, multiple adjacent bodies 1 can be selected for pre-winding, or multiple non-adjacent bodies 1 can be selected for pre-winding, which is not limited here.

[0051] Optionally, the wound coil 2 and the coil 2 wound on the body 1 itself need not to interfere with each other during pre-winding, and the winding position selected on the body 1 during pre-winding can be adaptively adjusted according to the actual structure of the body 1 and the winding method, etc. as long as the wire inlet end and the wire outlet end of the coil 2 during pre-winding can be matched with the wire outlet end of the previous body group B and the wire inlet end of the next body group B, without affecting the winding difficulty and effect, which is not described in detail here.

[0052] The stator winding method provided by the embodiments of the present application will be further described in detail below with reference to the drawings taking a three-phase motor as an example.

[0053] Referring to Figures 2 to 5 , before the stator is formed into a circle, the plurality of bodies 1 are divided into a first sub-area A1 and a second sub-area A2 along a first direction L, each sub-area A includes adjacent first, second and third body groups B1, B2 and B3, and each body group B includes two bodies 1. It can be understood that the first, second and third body groups B1, B2 and B3 in each sub-area A correspond to U, V and W in the three-phase motor respectively, and the plurality of bodies 1 arranged in sequence along the first direction can be recorded as U1, U2, V1, V2, W1, W2, U3, U4, V3, V4, W3, W4 respectively. The stator winding method comprises:

[0054] S101, winding of the coil 2 in the same sub-area A, the coil 2 is wound on the bodies 1 in each body group B in turn, and the winding directions of adjacent bodies 1 in the same body group B are opposite, and the winding directions of the bodies 1 with the same arrangement sequence in adjacent body groups B are opposite.

[0055] S102, before the coil 2 is wound from the body group B in one sub-area A to the same body group B in another sub-area A, the coil 2 is pre-wound on any one or more bodies 1 between the two body groups B.

[0056] In the above steps, when winding the coil 2, the winding of the same body group B is generally completed before winding another body group B, and so on. In the first direction L, the second body group B2 in the same sub-area A is located between the first body group B1 and the third body group B3, and after the winding of all the first body groups B1 in different sub-areas A is completed, the winding of all the second body groups B2 is performed, and finally the winding of all the third body groups B3 is performed.

[0057] When the winding of each body group B is completed, the winding process includes the winding between two bodies 1 in the group and the inter-group winding of two body groups B across the area. For the winding of the first body group B1, when the intra-group winding is performed, among the two bodies 1 in the first body group B1 of the first sub-area A1, the coil 2 is wound on the body U1 sequentially arranged in the first position in the first winding direction a1 and wound on the body U2 sequentially arranged in the second position in the opposite winding direction, so as to form a magnetic opposite structure; before the inter-group winding of the same group is performed, there are bodies V1, V2, W1, W2 of the second body group B2 and the third body group B3 between the two first body groups B1 across the area, after the coil 2 is unwound from the outlet of U2, the coil 2 is wound on the first body group B1 of the second sub-area A2 after pre-winding one turn on the body V2 or W1 located in the middle, and the winding directions of U3 and U4 are opposite when the coil 2 is wound on the first body group B1 of the second sub-area A2, and the winding direction of U3 is opposite to the winding direction of U1, and the winding direction of U4 is opposite to the winding direction of U2.

[0058] When the winding of the second body group B2 is performed, when the intra-group winding is performed, among the two bodies 1 in the second body group B2 of the first sub-area A1, the coil 2 is wound on the body V1 sequentially arranged in the first position in the second winding direction a2 (opposite to the first winding direction) and wound on the body V2 sequentially arranged in the second position in the opposite winding direction, so as to form a magnetic opposite structure while the winding direction of the adjacent group is opposite; before the inter-group winding of the same group is performed, there are bodies W1, W2, U3, U4 of the third body group B3 and the first body group B1 of the second sub-area A2 between the two second body groups B2 across the area, after the coil 2 is unwound from the outlet of V2, the coil 2 is wound on the second body group B2 of the second sub-area A2 after pre-winding one turn on the body W2 or U3 located in the middle, and the winding directions of V3 and V4 are opposite when the coil 2 is wound on the second body group B2 of the second sub-area A2, and the winding direction of V3 is opposite to the winding direction of V1, and the winding direction of V4 is opposite to the winding direction of V2.

[0059] In the winding of the third body group B3, when the winding within the group is performed, among the two bodies 1 in the third body group B3 of the first sub-area A1, the body W1 in which the coil 2 is sequentially arranged in the first position is wound in the first winding direction a1, and the body W2 in which the coil 2 is sequentially arranged in the second position is wound in the opposite winding direction, so as to form the structure with opposite magnetism while being opposite to the winding direction of the adjacent group; before the cross-group winding belonging to the same group is performed, there are the bodies U3, U4, V3, V4 of the first body group B1 and the second body group B2 in the second sub-area A2 between the two third body groups B3 in the cross-area, after the coil 2 is led out from the leading-out port of W2, the coil 2 is pre-wound one turn at the middle U4 or V3, and then the coil 2 is wound to the third body group B3 in the second sub-area A2, the winding directions of W3 and W4 are opposite when the coil 2 is wound to the third body group B3 in the second sub-area A2, and the winding direction of W3 is opposite to the winding direction of W1, and the winding direction of W4 is opposite to the winding direction of W2.

[0060] It can be understood that, in the winding process described above, when the coil 2 is pre-wound on the corresponding body 1, the winding direction of the coil 2 is the same as the direction in which the body 1 is wound.

[0061] It can be understood that, when wound by using the stator winding method described above, the problem of loose winding during the rounding of the stator can be solved only by changing the winding method on the basis of the original stator structure, or the structure of the stator itself can be adjusted, which is not specifically limited here.

[0062] The stator and the stator winding method provided by the embodiments of the present application are described in detail below in the case where the structure of the stator itself is improved.

[0063] Referring to Figure 3 and Figure 4 , the present application provides a stator, which comprises a plurality of bodies 1 connected in rotation and a coil 2 wound on the bodies 1 in an insulating manner, the body 1 comprises a core 11 and a connecting frame 12 connected in a second direction (the diameter direction of the circle after rounding, not marked in the figure), the core 11 is an electrically conductive part, and the connecting frame 12 is an insulating part, a plurality of connecting frames 12 are connected in rotation in a first direction L1, the coil 2 is wound on the core 11 in an insulating manner to form a winding, and the connecting frame comprises a protruding part 121.

[0064] Optionally, the core 11 has a groove, the coil 2 is wound at the groove position, and the connecting frame 12 is arranged as a skeleton structure of the core 11, so that when the core 11 is rounded, the connecting frame 12 is arranged at the inner circle and part of the outer circle of the circle, and the protruding part 121 is arranged on one side of the outer circle of the connecting frame 12 in the axial direction of the circle.

[0065] It can be understood that the connecting frame 12 can be provided as a plastic part, and the protruding part 121 is made of the same material and is integrally formed. The connecting frame 12 located at the outer ring part is provided with a yoke wall 122 of the skeleton, and the protruding part 1212 is provided on the side away from the groove. Moreover, the yoke wall 122 is provided with a wire inlet hole and a wire outlet hole communicated with the groove, so as to facilitate the coil 2 to enter and exit the different bodies 1 to form a winding in the groove, and the position, size and the like of the wire inlet hole and the wire outlet hole can be adaptively adjusted according to the actual situation, which is not specifically limited here.

[0066] In an optional embodiment, the protruding part 121 is provided with a clamping groove 121a, and the coil 2 is wound in the clamping groove 121a during pre-winding. The clamping grooves 121a are oppositely arranged on both sides of the protruding part 121 along the first direction L, or the clamping grooves 121a are arranged in a circumferential ring shape along the protruding part 121. In order to ensure the stability of the coil 2 during pre-winding by the clamping grooves 121a, and avoid falling off.

[0067] Optionally, the clamping grooves 121a provided on the protruding part 121 can also be provided as other structures capable of clamping the pre-wound coil 2, and the size and depth of the clamping grooves 121a can be adaptively matched according to the diameter and the number of turns of the wound coil 2, which is not specifically limited here.

[0068] Based on the stator in the above, the stator winding method includes pre-winding on the protruding part 121. Similarly, the winding of the stator in the three-phase motor in the above is taken as an example.

[0069] The winding method includes: each zone A includes adjacent first and second zones A1 and A2, and each zone A includes adjacent first and second body groups B1 and B2. The winding method includes: after the coil 2 is wound in opposite directions on the adjacent cores 11 in the first body group B1 in the first zone A1, the coil 2 is pre-wound on any protruding part 121 between the first body groups B1 in the two zones A, and then wound in opposite directions on the adjacent cores 11 in the first body group B1 in the second zone A2; after the coil 2 is wound in opposite directions on the adjacent cores 11 in the second body group B2 in the first zone A1, the coil 2 is pre-wound on any protruding part 121 between the second body groups B2 in the two zones A, and then wound in opposite directions on the adjacent cores 11 in the second body group B1 in the second zone A2. In the first and second zones A1 and A2, the winding directions of the coil 2 on the cores 11 with the same arrangement sequence in the first and second body groups B1 and B2 are opposite.

[0070] It can be understood that the winding method of the first partition A1 and the second partition A2 is the same as the method described in the above embodiment, and the difference is that the coil 2 is pre-wound on the protrusion 121 of the connecting frame 12. The specific winding method is described in the above embodiment, and will not be described in detail here.

[0071] In an optional embodiment, the partition A further comprises a third partition, the second partition A2 is located between the first partition A1 and the third partition along the first direction L, and the winding method comprises: after the coil 2 is wound on the adjacent cores 11 in the first body group B1 in the second partition A2 in opposite directions, the coil 2 is pre-wound on any protrusion 121 of the second body group B2, and then wound on the adjacent cores 11 in the first body group B1 in the third partition in opposite directions; after the coil 2 is wound on the adjacent cores 11 in the second body group B2 in the second partition A2 in opposite directions, the coil 2 is pre-wound on any protrusion 121 of the first body group B1 in the third partition, and then wound on the adjacent cores 11 in the second body group B2 in the third partition in opposite directions, wherein in the third partition, the winding direction of the coil 2 on the cores 11 arranged in the same order in the first body group B1 and the second body group B2 is the same as that in the first partition A1.

[0072] It can be understood that the winding method after adding the third partition is theoretically consistent with the winding method described in the above embodiment with the first partition A1 and the second partition A2, and will not be described in detail here.

[0073] The application also provides an electric machine, which is provided with a cooperating stator and rotor, and the stator is the stator described in the above embodiment, which will not be described in detail here.

[0074] The application also provides an electric machine, which is provided with a cooperating stator and rotor, and the winding method adopted in the stator is the winding method described in the above embodiment, which will not be described in detail here.

[0075] The application also provides a compressor, which is provided with the electric machine described in the above embodiment, which will not be described in detail here.

[0076] It should be noted that the "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like mentioned in the specification mean that the described embodiment can include a specific feature, structure or characteristic, but not necessarily every embodiment includes the specific feature, structure or characteristic. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it is within the knowledge of those skilled in the art to realize such feature, structure or characteristic in combination with other embodiments described explicitly or implicitly.

[0077] It should be readily understood that "on," "over," and "above" in the present disclosure are to be interpreted in the broadest context, such that "on" means not only "directly on" but also includes the meaning of "on" with intermediate features or layers therebetween, and "over" or "above" includes not only the meaning of "over" or "above" but also the meaning of "over" or "above" with no intermediate features or layers therebetween (i.e., directly on).

[0078] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0079] It should be noted that, in the present document, the relational terms such as "first" and "second" and the like can merely be used to differentiate one entity or action from another, and do not necessarily require or imply any actual relationship or order between or among these entities or actions. Moreover, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements in the list, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element preceded by "comprising" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0080] Finally, it should be noted that the above-described embodiments are merely intended for describing and illustrating, but not limiting, the technical solutions of the present application; even though the present application has been described in detail with reference to the above-described embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the above-described embodiments, or equivalently replace some or all of the technical features thereof; and such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for winding a stator, the stator comprising a plurality of bodies rotatably connected and coils wound around the bodies, the plurality of bodies being divided into a plurality of partitions along a first direction, each partition comprising a plurality of body groups arranged in sequence, and body groups arranged in the same order in different partitions being the same body group, each body group comprising at least two bodies, characterized in that, The winding method includes: Before the coil is wound from the body group in one partition to the same body group in another partition, the coil is pre-wound on any one or more of the bodies between the two body groups; The body includes an iron core and a connecting frame connected along a second direction. The iron core is a conductive element, and the connecting frame is an insulating element. Multiple connecting frames are rotatably connected along a first direction. The coil is wound around the iron core to form a winding. The connecting frame includes a protrusion. The winding method includes: The pre-winding is performed on the protrusion.

2. The winding method according to claim 1, characterized in that, The coil is wound from the body group in one partition to the same body group in an adjacent partition, with two bodies between the two identical body groups, and the coil is pre-wound on either body.

3. The winding method according to claim 1, characterized in that, The coil is wound from the body group in one partition to the same body group in an adjacent partition, wherein there are two or more bodies between the two identical body groups, and the coil is pre-wound on one or more bodies located in the middle.

4. The winding method according to claim 1, characterized in that, The winding direction of the coil during pre-winding is the same as the winding direction of the corresponding body when winding the coil.

5. The winding method according to claim 1, characterized in that, The pre-winding includes: Based on the number of bodies in the same body group in the two partitions, select the middle body and wind it around the body one turn or an integer multiple of one turn in a first winding direction, the first winding direction being the same as the direction in which the corresponding body winds the coil.

6. The winding method according to claim 1, characterized in that, When the coil is wound in the same partition, the coil is wound sequentially around the body in each body group, and the winding directions of adjacent bodies in the same body group are opposite. The coils are wound in opposite directions in bodies with the same arrangement order in adjacent body groups.

7. The winding method according to claim 1, characterized in that, The partition includes adjacent first and second partitions, and each partition includes adjacent first and second body groups. The winding method includes: After the coil is wound in opposite directions on adjacent iron cores in the first body group in the first partition, and after the coil is pre-wound on any of the protrusions between the first body groups in the two partitions, it is wound in opposite directions on adjacent iron cores in the first body group in the second partition. After the coil is wound in opposite directions around adjacent iron cores in the second body group in the first partition, and then pre-wound at any of the protrusions between the second body groups in the two partitions, the coil is wound in opposite directions around adjacent iron cores in the second body group in the second partition. In the first and second partitions, the coils are wound in opposite directions around the iron cores arranged in the same order in the first and second body groups.

8. The winding method according to claim 7, characterized in that, The partition further includes a third partition, and the second partition is located between the first partition and the third partition along the first direction. The winding method includes: After the coil is wound in the second partition with the adjacent iron cores in the first body group in opposite directions, and after the coil is pre-wound on any of the protrusions in the second body group, it is wound in the third partition with the adjacent iron cores in the first body group in opposite directions. After the coil is wound in the second partition with adjacent iron cores in the second body group in opposite directions, and after the coil is pre-wound on any of the protrusions of the first body group in the third partition, it is wound in the third partition with adjacent iron cores in the second body group in opposite directions. In the third partition, the winding direction of the coil around the iron cores arranged in the same order in the first body group and the second body group is the same as that in the first partition.

9. A stator, characterized in that, The stator includes a plurality of bodies rotatably connected and coils wound around the bodies. The plurality of bodies are divided into a plurality of partitions along a first direction. Each partition includes a plurality of sequentially arranged body groups, and body groups with the same arrangement order in different partitions are considered the same body group. Each body group includes at least two bodies. The bodies include: The iron core is configured as a conductive component; A connecting frame, configured as an insulating component, is provided. Multiple connecting frames are rotatably connected along a first direction. The iron core is connected to the connecting frame along a second direction. Each connecting frame includes a protrusion. As the coil is wound from one body group in one partition to the same body group in another partition, the coil is pre-wound on the protrusions of any one or more bodies between the two wound body groups.

10. The stator according to claim 9, characterized in that, The protrusion is provided with a slot, and during pre-winding, the coil is wound into the slot. The card slots are disposed opposite to each other on both sides of the protrusion along the first direction, or... The slots are arranged in a ring around the circumference of the protrusion.

11. An electric motor, characterized in that, Includes the stator as described in claim 9 or 10.

12. A compressor, characterized in that, Including the motor as described in claim 11.

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