Stator continuous winding, stator and motor

Abstract

The utility model provides a stator continuous winding, a stator and a motor, the stator continuous winding comprises a multi-phase winding, any phase winding at least comprises two winding units which are sequentially arranged along the circumferential direction of a stator iron core, and two adjacent winding units are arranged in adjacent layers of the stator iron core in the radial direction. Each winding unit comprises a plurality of groups of turning parts arranged on the two axial sides of the stator core, any winding unit is wound at least across one layer in the radial direction of the stator core, and one group of turning parts of the cross-layer transition part are arranged in a manner that a part of turning parts are overlapped in the circumferential direction of the stator core, and the other group of turning parts of the cross-layer transition part are overlapped in the circumferential direction of the stator core. One part of the turning part is arranged in a surrounding manner, the other part of the turning part is arranged in a surrounding manner, or one part of the turning part is arranged in a surrounding manner and the other part of the turning part is overlapped. The beneficial effects of the utility model are that the stator continuous winding structure is high in symmetry degree, low in loop current and high in motor efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and particularly relates to a stator continuous winding, a stator and a motor. Background Art

[0002] In the prior art, when the motor stator winding is a continuous winding, it includes a plurality of continuous winding coils. The continuous winding coils are located in a plurality of slots of the stator core and are wound through the plurality of slots of the stator core in sequence to form a motor stator winding with a plurality of parallel branches. Among them, the conductors of the plurality of parallel branches need to be arranged in a cross-over and stacked manner in sequence, and after the cross-over and stacked arrangement, they are wound to form a coil group, and then the wound coil group is placed in the stator slots of the stator core. The manufacturing process of the continuous winding is complex and cumbersome, and the structure of the continuous winding is asymmetric, resulting in a high loop current and poor motor efficiency. Summary of the Invention

[0003] In view of the above problems, the utility model provides a stator continuous winding, a stator and a motor to solve the above or other previous problems existing in the prior art.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is: a stator continuous winding includes a multi-phase winding. In any one phase winding, it includes at least two winding units arranged in sequence along the circumferential direction of the stator core. The adjacent two winding units are arranged in the radially adjacent layers of the stator core. Each winding unit includes a plurality of turning parts arranged on both axial sides of the stator core. Along the radial direction of the stator core, any one winding unit is wound across at least one layer, and a group of turning parts in the cross-layer transition part is arranged such that: along the circumferential direction of the stator core, a part of the turning parts are arranged in an overlapping manner, and the other part of the turning parts are arranged in an enclosing manner, or a part of the turning parts are arranged in an enclosing manner, and the other part of the turning parts are arranged in an overlapping manner.

[0005] Further, each winding unit includes a plurality of continuous winding coils arranged in sequence along the circumferential direction of the stator core. The plurality of continuous winding coils are arranged in adjacent slots in the same layer of the stator core. Each continuous winding coil includes a plurality of turning parts arranged on both axial sides of the stator core.

[0006] Further, a plurality of turning parts of any one continuous winding coil in a part of the layers are arranged such that: along the circumferential direction of the stator core, the pitches of the respective turning parts located on both axial sides of the stator core are the same.

[0007] Further, a plurality of turning parts of any one continuous winding coil in the remaining layers are arranged such that: along the circumferential direction of the stator core, the pitches of the adjacent two turning parts located on both axial sides of the stator core are different.

[0008] Further, in any layer, the pitches of two adjacent turning parts located on either axial side of the stator core are the same.

[0009] Further, except for the turning parts of the cross-layer transition section, the other multiple groups of turning parts of any winding unit are arranged in an enclosed manner.

[0010] Further, the turning parts of the multiple cross-layer transition sections of any winding unit are all arranged on the same axial side of the stator core.

[0011] Further, among the multiple layers where any continuous winding coil is located, adjacent three layers are set as a layer group, and multiple layer groups are arranged in sequence along the radial direction of the stator core.

[0012] A stator includes the stator continuous winding as described above.

[0013] A motor includes the stator as described above.

[0014] Due to the above technical solution, any phase winding of the stator continuous winding includes at least two winding units. The multiple winding units are arranged at a certain pitch distance along the circumferential direction of the stator core. And each winding unit is of a continuous winding structure and includes multiple continuous winding coils that are arranged in sequence along the circumferential direction of the stator core and are located in adjacent slots of the stator core. And each continuous winding coil is of a continuous coil structure. Only the corresponding continuous winding coils need to be welded to form a parallel branch, with fewer solder joints. In any winding unit, among the turning parts of the cross-layer transition section along the circumferential direction of the stator core, a part is arranged in an overlapping manner and another part is arranged in an enclosed manner, or a part is arranged in an enclosed manner and another part is arranged in an overlapping manner. In any layer, the turning parts on both axial sides of the stator core are arranged in an enclosed manner, so that the cross-action of the continuous winding coils in the stator continuous winding structure is reduced, the symmetry is high, the loop current is low, and the motor efficiency is high. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the developed structure of a phase winding of Embodiment 1 of the present utility model;

[0016] Figure 2 is a schematic diagram of the developed structure of a winding unit of Embodiment 1 of the present utility model;

[0017] Figure 3 is a schematic diagram of the developed structure of another winding unit of Embodiment 1 of the present utility model;

[0018] Figure 4 is a schematic diagram of the developed structure of a phase winding of Embodiment 2 of the present utility model;

[0019] Figure 5It is a schematic diagram of the unfolded structure of a winding unit in the second embodiment of the present utility model;

[0020] Figure 6 It is another schematic diagram of the unfolded structure of a winding unit in the second embodiment of the present utility model;

[0021] Figure 7 It is a schematic diagram of the unfolded structure of a phase winding in the third embodiment of the present utility model;

[0022] Figure 8 It is a schematic diagram of the unfolded structure of a winding unit in the third embodiment of the present utility model;

[0023] Figure 9 It is another schematic diagram of the unfolded structure of a winding unit in the third embodiment of the present utility model;

[0024] Figure 10 It is a schematic diagram of the unfolded structure of a phase winding in the fourth embodiment of the present utility model;

[0025] Figure 11 It is a schematic diagram of the unfolded structure of a winding unit in the fourth embodiment of the present utility model;

[0026] Figure 12 It is another schematic diagram of the unfolded structure of a winding unit in the fourth embodiment of the present utility model.

[0027] In the figure:

[0028] 1. First winding unit 2. Second winding unit 10 / 20. First winding coil

[0029] 11 / 21. Second winding coil 12 / 22. Third winding coil B1. First end

[0030] B2. Second end 3. Interlayer transition part Detailed implementation manners

[0031] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] Figure 1 The schematic diagram of the structure of an embodiment of the present utility model is shown. This embodiment relates to a stator continuous winding, a stator and a motor. Any phase winding has at least two winding units. Each winding unit has a plurality of continuous winding coils. Each continuous winding coil winds one turn in one layer and then crosses at least one layer to enter the next layer for winding until all the layers occupied by the continuous winding coil in this phase are covered. Only the corresponding continuous winding coils need to be connected to form a branch winding. There are few solder joints, which is convenient for controlling the welding quality. The production process flow is simple, the manufacturing cost is low, and it is easy to realize automated production.

[0033] A stator continuous winding, such asFigures 1-12 As shown, it includes a polyphase winding. The polyphase winding is installed on the stator core, and the polyphase windings are arranged in sequence along the circumferential direction of the stator core. The number of phase windings is selected according to actual requirements. In any one-phase winding, it includes at least two winding units 1 and 2 arranged in sequence along the circumferential direction of the stator core. The multiple winding units 1 and 2 are all continuous winding structures. The multiple winding units 1 and 2 are arranged in sequence along the circumferential direction of the stator core. There is a certain pitch between two adjacent winding units 1 and 2. When arranging the multiple winding units 1 and 2, taking the first winding unit 1 and 2 as a reference, along the circumferential direction of the stator core, the second winding unit 1 and 2 moves a distance corresponding to a corresponding pitch to wind the second winding unit 1 and 2. Taking the second winding unit 1 and 2 as a reference, the third winding unit 1 and 2 moves another distance corresponding to a corresponding pitch to wind the third winding unit 1 and 2, and so on. The multiple winding units 1 and 2 are arranged in parallel and stacked in sequence along the circumferential direction of the stator core to wind the multiple winding units 1 and 2, constituting the overall structure of one-phase winding. The pitch distances moved by different winding units 1 and 2 during winding are different distance values and are selected according to actual requirements.

[0034] In any one-phase winding, the multiple winding units 1 and 2 are arranged in sequence along the circumferential direction of the stator core. The pitch distance between the incoming line end of the second winding unit 1 and 2 and the incoming line end of the first winding unit 1 and 2 corresponds to the pitch of the turning part near the incoming line end of the first winding unit 1 and 2. The pitch distance between the incoming line end of the third winding unit 1 and 2 and the incoming line end of the second winding unit 1 and 2 corresponds to the pitch of the turning part near the incoming line end of the second winding unit 1 and 2, and so on. The multiple winding units 1 and 2 are arranged in sequence in this way.

[0035] Each winding unit 1 and 2 fills all the slots of the stator core occupied by this phase winding in each layer. Each winding unit 1 and 2 is located in multiple layers of the stator core occupied. Different winding units 1 and 2 are located in different layers of the stator core. The two winding units 1 and 2 in adjacent layers are arranged in parallel and stacked. The multiple winding units 1 and 2 fill all the layers of all the slots of the stator core occupied by this phase winding, constituting the overall structure of one-phase winding.

[0036] Each winding unit 1, 2 includes multiple groups of connected straight portions and turning portions. Along the axial direction of the stator core, in any layer, one end of each winding unit 1, 2 passes through from one axial side of the stator core to the other side, and along the circumferential direction of the stator core, successively passes through multiple slots, forming multiple groups of turning portions on both axial sides of the stator core. According to the slots of the stator core occupied by each phase winding, one end of each winding unit 1, 2 enters from one side of the first slot of the stator core and exits from the other side, then enters the second slot on this side and exits from the other side of the second slot, ……, successively passes through multiple slots, forming multiple turning portions on both axial sides of the stator core, and forming straight portions in the slots of the stator core, thus forming a layer winding structure in an approximate S shape. Then, it crosses layers and enters another layer, repeating the above winding steps in this layer, winding in this layer, ……, successively winding in each layer occupied by the winding unit 1, 2 along the radial direction of the stator core, and successively arranging in the corresponding layers to form the structure of the winding unit 1, 2.

[0037] Each winding unit 1, 2 includes multiple continuous winding coils arranged along the circumferential direction of the stator core. The multiple continuous winding coils are arranged in adjacent slots of the stator core. Any continuous winding coil is wound along the circumferential direction of the stator core in each layer and is successively wound from the radially inner layer to the radially outer layer or from the radially outer layer to the radially inner layer, constituting a coil structure in an approximate S shape. That is, according to the slots and layers where the continuous winding coil needs to be arranged, in the radially inner layer of the stator core, along the axial direction of the stator core, one end of the continuous winding coil enters from the first end B1 of any slot of the stator core and extends out from the second end B2 of this slot, located in the radially inner layer of this slot. Then, along the circumferential direction of the stator core, this end of the continuous winding coil enters from the second end B2 of another slot and extends out from the first end B1 of this slot. Then, this end of the continuous winding coil enters from the first end B1 of the third slot and extends out from the second end B2 of the third slot, ……, the continuous winding coil is successively wound until the radially inner layers of all slots are filled, forming straight portions in the slots and multiple turning portions on both axial sides of the stator core. Then, it enters the next layer and repeats the above winding steps again until all layers of all slots are filled, constituting the structure of the continuous winding coil.

[0038] In any of the winding units 1, 2, the multiple inter-layer transition portions 3 of the multiple continuous winding coils are all located on the same axial side of the stator core. The multiple inter-layer transition portions 3 of the multiple continuous winding coils are arranged such that: along the circumferential direction of the stator core, the turning portions of the multiple continuous winding coils are arranged in two parts. One part of the turning portions is arranged in an overlapping manner, and the other part of the turning portions is arranged in an enclosing manner, or one part of the turning portions is arranged in an enclosing manner, and the other part of the turning portions is arranged in an overlapping manner. That is, in the inter-layer transition portions 3 of the multiple continuous winding coils, the turning portions of the multiple continuous winding coils are divided into two groups. Along the circumferential direction of the stator core, the first group of turning portions is arranged in an overlapping manner, and adjacent two turning portions in the group intersect. The second group of turning portions is arranged in an enclosing manner, and adjacent two turning portions in the group do not intersect. Or, the first group of turning portions is arranged in an enclosing manner, and adjacent two turning portions in the group do not intersect. The second group of turning portions is arranged in an overlapping manner, and adjacent two turning portions in the group intersect. The specific arrangement of the inter-layer transition portions 3 of the multiple continuous winding coils is selected according to actual requirements, and no specific requirements are made here.

[0039] In any phase winding, when the multiple winding units 1, 2 are wound, any one of the winding units 1, 2 is wound across at least one layer along the radial direction of the stator core. That is, when any one of the winding units 1, 2 is wound around the stator core, it is not arranged in adjacent layers. Adjacent two winding units 1, 2 are arranged in adjacent radial layers of the stator core. The number of layers that each winding unit 1, 2 crosses during cross-layer winding is selected according to the number of winding units 1, 2. For example, if any phase winding has two winding units 1, 2, each winding unit 1, 2 is wound across one layer during winding. One winding unit 1, 2 is arranged in the first, third, fifth, etc. radial layers of the stator core. After the first layer of this winding unit 1, 2 is wound, it crosses to the third layer and winds on the third layer. After the third layer is wound, it crosses to the fifth layer and winds on the fifth layer until this winding unit 1, 2 is completely wound on the stator core. The other winding unit 1, 2 is arranged in the second, fourth, sixth, etc. radial layers of the stator core. After the second layer of this winding unit 1, 2 is wound, it crosses to the fourth layer and winds on the fourth layer. After the fourth layer is wound, it crosses to the sixth layer and winds on the sixth layer until this winding unit 1, 2 is completely wound on the stator core. If any phase winding has three winding units 1, 2, then each winding unit 1, 2 crosses two layers during cross-layer winding. That is, the first winding unit 1, 2 is arranged in the first, fourth, seventh, etc. layers, the second winding unit 1, 2 is arranged in the second, fifth, eighth, etc. layers, and the third winding unit 1, 2 is arranged in the third, sixth, ninth, etc. layers.

[0040] Any continuous winding coil of any one of the winding units 1, 2 is wound radially across at least one layer along the stator core. A plurality of continuous winding coils in each winding unit 1, 2 are arranged on the same layer and are located in adjacent slots on the same layer. The number of layers crossed by the plurality of continuous winding coils during layer crossing is the same. The slots where the plurality of continuous winding coils on the same layer are located are different. For example, when a continuous winding coil is wound, it is arranged in the corresponding slots of the first layer, the third layer, the fifth layer, etc. of the stator core, and the remaining continuous winding coils are also arranged in the first layer, the third layer, the fifth layer, etc. of the stator core, and the slots where they are located are adjacent to the slots where the above-mentioned continuous winding coils are located.

[0041] In any one of the winding units 1, 2, when a plurality of continuous winding coils are arranged in a plurality of adjacent slots, the plurality of continuous winding coils are arranged in parallel and stacked. The pitches of the corresponding turning parts of adjacent continuous winding coils are different. The corresponding turning parts at any position of the plurality of continuous winding coils form a set of turning parts, and the corresponding straight parts at any position of the plurality of continuous winding coils form a set of straight parts; except for the cross-layer transition part 3, the plurality of turning parts in any set of turning parts located on the axial two sides of the stator core are arranged in a surrounding manner, that is, in any set of turning parts located on the axial two sides of the stator core, the turning parts of each continuous winding coil do not cross and are arranged concentrically. Along the axial direction of the stator core, the plurality of turning parts in each set of turning parts are arranged in parallel. In any set of turning parts, the pitches of the plurality of turning parts increase or decrease in sequence along the axial direction of the stator core, and are selected and set according to actual requirements.

[0042] Any continuous winding coil is arranged in a part of the layers such that the pitches of the respective turning parts located on the axial two sides of the stator core are the same along the circumferential direction of the stator core, that is, in a part of the layers, the pitches of the plurality of turning parts located on the axial two sides of any layer of the stator core are the same. The pitches of the turning parts located in different layers may be the same or different, and the pitch of the turning parts of any layer is selected and set according to actual requirements; in this part of the layers, it may be adjacent layers or non-adjacent layers, and is selected and set according to actual requirements. For example, among the plurality of layers where any continuous winding coil is located, the pitches of the plurality of turning parts located on the axial two sides of the third layer of the stator core are the same, the pitches of the plurality of turning parts located on the axial two sides of the ninth layer of the stator core are the same, and the pitches of the plurality of turning parts located on the axial two sides of the third layer of the stator core are the same as the pitches of the plurality of turning parts located on the axial two sides of the ninth layer of the stator core, and this pitch may be 9.

[0043] Any continuous winding coil is arranged in the remaining layers such that, along the circumferential direction of the stator core, the pitches of two adjacent turning portions located on the axial two sides of the stator core are different. In any one of these layers, there are multiple turning portions on both axial sides of the stator core, and the pitches of two adjacent turning portions on the axial two sides of the stator core are different, and these two adjacent turning portions are located on the axial two sides of the stator core. Taking two adjacent turning portions located on the axial two sides of the stator core as a group, in any layer, multiple groups of turning portions are arranged along the circumferential direction of the stator core. The pitches of the two turning portions in multiple groups are the same, covering this layer; or, among multiple groups of turning portions, the pitches of the turning portions in some groups are the same, and the pitches of the turning portions in the remaining groups are the same, but the pitches of the turning portions in the two parts of the groups are different; or, the pitches of the turning portions in multiple groups of turning portions are different; the pitches of the turning portions in multiple groups of turning portions are selected and arranged according to actual requirements.

[0044] In multiple layers of this part of the layers, the pitches of the turning portions in different layers can be the same or different, and are selected and arranged according to actual requirements. Multiple layers of this part of the layers can be adjacent layers or non - adjacent layers, and are selected and arranged according to actual requirements.

[0045] In any winding unit 1, 2, when multiple continuous winding coils are wound, in any layer, the arrangement patterns of the corresponding turning portions of each continuous winding coil in each group of turning portions on any one axial side of the stator core are the same, and the arrangement patterns of the corresponding turning portions of each continuous winding coil in two adjacent groups of turning portions on the axial two sides of the stator core are opposite. For example, at one axial end of the stator core, the arrangement pattern of the corresponding turning portions of each continuous winding coil in any one group of turning portions is: along the axial direction of the stator core, the turning portion of the first continuous winding coil, the turning portion of the second continuous winding coil, the turning portion of the third continuous winding coil,..., the turning portion of the nth continuous winding coil are arranged in sequence. At the other axial end of the stator core, the arrangement pattern of the corresponding turning portions of each continuous winding coil in any one group of turning portions is: along the axial direction of the stator core, the turning portion of the nth continuous winding coil, the turning portion of the (n - 1)th continuous winding coil, the turning portion of the (n - 2)th continuous winding coil,..., the turning portion of the first continuous winding coil are arranged in sequence.

[0046] In any of the winding units 1, 2, only in the set of turning portions of the cross-layer transition portion 3 do multiple turning portions intersect. In the sets of turning portions in other parts of any layer, there is no intersecting setting. During the winding process of multiple continuous winding coils in any of the winding units 1, 2, the crossing actions between the multiple continuous winding coils are reduced, making the winding process of each winding unit 1, 2 simple. In any phase winding, multiple winding units 1, 2 are arranged in parallel stacks in sequence along the circumferential direction of the stator core. In each set of turning portions at both axial ends of the stator core in each layer, the turning portions do not intersect. In a set of turning portions of the cross-layer transition portion 3, at least some of the turning portions intersect. The cross-layer transition portions 3 in each of the winding units 1, 2 are adjacent to each other and are all located on the same axial side of the stator core, reducing the crossing actions of each continuous winding coil during the winding process of a phase winding, simplifying the winding process, avoiding multiple cross-winding arrangements, and making the symmetry of the stator continuous winding structure good and the loop current small, which is convenient for manufacturing.

[0047] In some feasible embodiments, preferably, in any layer, the pitches of two adjacent turning portions located on any one side of the stator core in the axial direction are the same. That is, in any layer, along the circumferential direction of the stator core, the pitches of multiple sets of turning portions are the same.

[0048] In multiple layers where any continuous winding coil is located, the winding layout methods of the continuous winding coils in each layer can be the same or different. Preferably, three adjacent layers are set as a layer group, and multiple layer groups are arranged in sequence along the radial direction of the stator core.

[0049] In any of the winding units 1, 2, when multiple continuous winding coils are stacked and wound, first place the continuous winding coils that do not intersect in the cross-layer transition portion 3 in sequence, and then place the continuous winding coils that intersect with them. Control the position of the cross-layer transition portion 3 in the winding unit 1, 2 according to the stacking order of the multiple continuous winding coils.

[0050] A stator includes the above-mentioned stator continuous winding.

[0051] A motor includes the above-mentioned stator.

[0052] The following will be described in detail with some specific embodiments.

[0053] Embodiment 1

[0054] A stator continuous winding is installed on a stator core. The stator continuous winding includes three-phase windings and has three parallel branches. The stator core has 54 slots, and the radial number of layers of the stator core is ten layers;

[0055] Each phase winding includes two winding units 1 and 2, which are arranged in sequence along the circumferential direction of the stator core. The two winding units 1 and 2 are arranged with a first pitch therebetween, and the first pitch is 9. When the two winding units 1 and 2 are wound in a cross-layer manner, they are wound across one layer, that is, along the radial direction of the stator core, the two winding units 1 and 2 are wound at intervals of one layer from the inner layer to the outer layer in sequence. Among them, one winding unit 1 and 2 is arranged on the first layer, the third layer, the fifth layer, the seventh layer, and the ninth layer, and the other winding unit 1 and 2 is arranged on the second layer, the fourth layer, the sixth layer, the eighth layer, and the tenth layer.

[0056] Each winding unit 1 and 2 includes three consecutive winding coils. Along the circumferential direction of the stator core, the three consecutive winding coils are arranged in adjacent three slots. After each consecutive winding coil is continuously wound in one layer along the circumferential direction of the stator core, it crosses one layer along the radial direction of the stator core and enters another layer, and is continuously wound along the circumferential direction of the stator core in the other layer. After the winding is completed, it crosses one layer along the radial direction of the stator core and enters another layer, and is continuously wound along the circumferential direction of the stator core in this layer,... and the winding is carried out in sequence until the continuous winding coil completes all layer windings.

[0057] For the convenience of description, it is set that: the above two winding units 1 and 2 are the first winding unit 1 and the second winding unit 2, and the above three consecutive winding coils are the first winding coil 10, 20, the second winding coil 11, 21, and the third winding coil 12, 22. Along the axial direction of the stator core, the two sides of the stator core are the first end B1 and the second end B2 respectively.

[0058] Specifically, as Figures 1-3 shown, the first winding coil 10 of the first winding unit 1 is wound in the first radial layer of the stator core by alternately separating 11 slots and 7 slots in sequence, wound in the third radial layer of the stator core by alternately separating 9 slots in sequence, wound in the fifth radial layer of the stator core by alternately separating 7 slots and 11 slots in sequence, wound in the seventh radial layer of the stator core by alternately separating 11 slots and 7 slots in sequence, wound in the ninth radial layer of the stator core by alternately separating 9 slots in sequence. The cross-layer transition part 3 is located at the first axial end of the stator core, and the specific setting is as follows:

[0059] The first winding coil 10 of the first winding unit 1 is wound starting from the radial first layer of the stator core. In the first layer, one end of the first winding coil 10 enters from slot 01 and exits from slot 12, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 19, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 30, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 37, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 48, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, and then crosses layers and enters the third layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8; In the third layer, it enters from slot 02 and exits from slot 11, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 20, forming a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 29, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 38, forming a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 47, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, and then crosses layers and enters the fifth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10; In the fifth layer, it enters from slot 03 and exits from slot 10, forming a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 21, forming a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 28, forming a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 39, forming a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 46, forming a turning portion with a pitch of 7 at the second end B2 of the stator core, and then crosses layers and enters the seventh layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9; In the seventh layer, it enters from slot 01 and exits from slot 12, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 19, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 30, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 37, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 48, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, and then crosses layers and enters the ninth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8;On the ninth layer, it enters from slot 02 and exits from slot 11, forming a turning part with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 20, forming a turning part with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 29, forming a turning part with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 38, forming a turning part with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 47, forming a turning part with a pitch of 9 at the second end B2 of the stator core, and extends out from the first end B1 of slot 47.;

[0060] The second winding coil 11 of the first winding unit 1 is wound in turn with an alternating separation of 9 slots on the first radial layer of the stator core, wound in turn with an alternating separation of 7 slots and 11 slots on the third radial layer of the stator core, wound in turn with an alternating separation of 11 slots and 7 slots on the fifth radial layer of the stator core, wound in turn with an alternating separation of 9 slots on the seventh radial layer of the stator core, wound in turn with an alternating separation of 7 slots and 11 slots on the ninth radial layer of the stator core. The cross-layer transition part 3 is located at the first axial end of the stator core, and is specifically arranged as follows:

[0061] The second winding coil 11 of the first winding unit 1 is wound starting from the radial first layer of the stator core. In the first layer, one end of the first winding coil 10 enters from slot 02 and exits from slot 11, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 20, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 29, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 38, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 47, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, and then crosses layers and enters the third layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10; In the third layer, it enters from slot 03 and exits from slot 10, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 21, forms a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 28, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 39, forms a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 46, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, and then crosses layers and enters the fifth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9; In the fifth layer, it enters from slot 01 and exits from slot 12, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 19, forms a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 30, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 37, forms a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 48, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, and then crosses layers and enters the seventh layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8; In the seventh layer, it enters from slot 02 and exits from slot 11, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 20, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 29, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 38, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 47, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, and then crosses layers and enters the ninth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10;At the ninth layer, it enters from slot 03 and exits from slot 10, forming a turning part with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 21, forming a turning part with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 28, forming a turning part with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 39, forming a turning part with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 46, forming a turning part with a pitch of 7 at the second end B2 of the stator core, and extends out from the first end B1 of slot 46.;

[0062] The third winding coil 12 of the first winding unit 1 is wound in the radial first layer of the stator core with a 7-slot and an 11-slot interval alternately, in the radial third layer of the stator core with an 11-slot and a 7-slot interval alternately, in the radial fifth layer of the stator core with a 9-slot interval alternately, in the radial seventh layer of the stator core with a 7-slot and an 11-slot interval alternately, and in the radial ninth layer of the stator core with an 11-slot and a 7-slot interval alternately. The cross-layer transition part 3 is located at the first axial end of the stator core, and the specific setting is as follows:

[0063] The third winding coil 12 of the first winding unit 1 is wound starting from the radial first layer of the stator core. In the first layer, one end of the first winding coil 10 enters from slot 03 and exits from slot 10, forming a turning part with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 21, forms a turning part with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 28, forms a turning part with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 39, forms a turning part with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 46, forms a turning part with a pitch of 7 at the second end B2 of the stator core. Then it makes a cross-layer and enters the third layer. The cross-layer transition part 3 is located at the first end B1 of the stator core, and the pitch of the formed turning part is 9. In the third layer, it enters from slot 01 and exits from slot 12, forms a turning part with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 19, forms a turning part with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 30, forms a turning part with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 37, forms a turning part with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 48, forms a turning part with a pitch of 11 at the second end B2 of the stator core. Then it makes a cross-layer and enters the fifth layer. The cross-layer transition part 3 is located at the first end B1 of the stator core, and the pitch of the formed turning part is 8. In the fifth layer, it enters from slot 02 and exits from slot 11, forms a turning part with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 20, forms a turning part with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 29, forms a turning part with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 38, forms a turning part with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 47, forms a turning part with a pitch of 9 at the second end B2 of the stator core. Then it makes a cross-layer and enters the seventh layer. The cross-layer transition part 3 is located at the first end B1 of the stator core, and the pitch of the formed turning part is 10. In the seventh layer, it enters from slot 03 and exits from slot 10, forms a turning part with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 21, forms a turning part with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 28, forms a turning part with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 39, forms a turning part with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 46, forms a turning part with a pitch of 7 at the second end B2 of the stator core. Then it makes a cross-layer and enters the ninth layer. The cross-layer transition part 3 is located at the first end B1 of the stator core, and the pitch of the formed turning part is 9;On the ninth layer, it enters from slot 01 and exits from slot 12, forming a turning part with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 19, forming a turning part with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 30, forming a turning part with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 37, forming a turning part with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 48, forming a turning part with a pitch of 11 at the second end B2 of the stator core, and extends out from the first end B1 of slot 48.;

[0064] The first winding coil 20 of the second winding unit 2 is wound successively and alternately with a separation of 7 slots and 11 slots on the second radial layer of the stator core, with a separation of 9 slots successively and alternately on the fourth radial layer of the stator core, with a separation of 7 slots and 11 slots successively and alternately on the sixth radial layer of the stator core, with a separation of 11 slots and 7 slots successively and alternately on the eighth radial layer of the stator core, and with a separation of 9 slots successively and alternately on the tenth radial layer of the stator core. The cross-layer transition part 3 is located at the first axial end of the stator core, and is specifically arranged as follows:

[0065] The first winding coil 20 of the second winding unit 2 is wound starting from the second radial layer of the stator core. In the second layer, one end of the first winding coil 20 enters from slot 10 and exits from slot 21, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 28, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 39, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 46, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 03, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, and then crosses layers and enters the fourth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8; In the fourth layer, it enters from slot 11 and exits from slot 20, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 29, forming a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 38, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 47, forming a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 02, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, and then crosses layers and enters the sixth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10; In the sixth layer, it enters from slot 12 and exits from slot 19, forming a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 30, forming a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 37, forming a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 48, forming a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 01, forming a turning portion with a pitch of 7 at the second end B2 of the stator core, and then crosses layers and enters the eighth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9; In the eighth layer, it enters from slot 10 and exits from slot 21, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 28, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 39, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 46, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 03, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, and then crosses layers and enters the tenth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8;On the tenth layer, it enters from slot 11 and exits from slot 20, forming a turning part with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 29, forming a turning part with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 38, forming a turning part with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 47, forming a turning part with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 02, forming a turning part with a pitch of 9 at the second end B2 of the stator core, and extends out from the first end B1 of slot 02.;

[0066] The second winding coil 21 of the second winding unit 2 is wound successively with an alternating separation of 9 slots on the second radial layer of the stator core, with an alternating separation of 11 slots and 7 slots on the fourth radial layer of the stator core, with an alternating separation of 7 slots and 11 slots on the sixth radial layer of the stator core, with an alternating separation of 9 slots on the eighth radial layer of the stator core, and with an alternating separation of 11 slots and 7 slots on the tenth radial layer of the stator core. The cross-layer transition part 3 is located at the first axial end of the stator core, and is specifically arranged as follows:

[0067] The second winding coil 21 of the second winding unit 2 is wound starting from the second radial layer of the stator core. In the second layer, one end of the first winding coil 20 enters from slot 11 and exits from slot 20, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 29, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 38, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 47, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 02, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, and then makes a cross-layer transition to enter the fourth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10; in the fourth layer, it enters from slot 12 and exits from slot 19, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 30, forms a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 37, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 48, forms a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 01, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, and then makes a cross-layer transition to enter the sixth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9; in the sixth layer, it enters from slot 10 and exits from slot 21, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 28, forms a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 39, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 46, forms a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 03, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, and then makes a cross-layer transition to enter the eighth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8; in the eighth layer, it enters from slot 11 and exits from slot 20, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 29, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 38, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 47, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 02, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, and then makes a cross-layer transition to enter the tenth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10;On the tenth layer, it enters from slot 12 and exits from slot 19, forming a turning part with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 30, forming a turning part with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 37, forming a turning part with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 48, forming a turning part with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 01, forming a turning part with a pitch of 7 at the second end B2 of the stator core, and extends out from the first end B1 of slot 01.;

[0068] The third winding coil 22 of the second winding unit 2 is wound in the radial second layer of the stator core with a separation of 11 slots and 7 slots alternately, wound in the radial fourth layer of the stator core with a separation of 11 slots and 7 slots alternately, wound in the radial sixth layer of the stator core with a separation of 9 slots alternately, wound in the radial eighth layer of the stator core with a separation of 7 slots and 11 slots alternately, wound in the radial tenth layer of the stator core with a separation of 7 slots and 11 slots alternately. The cross-layer transition part 3 is located at the first axial end of the stator core, and is specifically arranged as follows:

[0069] The third winding coil 22 of the second winding unit 2 is wound starting from the second radial layer of the stator core. In the second layer, one end of the first winding coil 20 enters from slot 12 and exits from slot 19, forming a turning portion with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 30, forming a turning portion with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 37, forming a turning portion with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 48, forming a turning portion with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 01, forming a turning portion with a pitch of 7 at the second end B2 of the stator core. Then it crosses layers and enters the fourth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9. In the fourth layer, it enters from slot 10 and exits from slot 21, forming a turning portion with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 28, forming a turning portion with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 39, forming a turning portion with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 46, forming a turning portion with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 03, forming a turning portion with a pitch of 11 at the second end B2 of the stator core. Then it crosses layers and enters the sixth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8. In the sixth layer, it enters from slot 11 and exits from slot 20, forming a turning portion with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 29, forming a turning portion with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 38, forming a turning portion with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 47, forming a turning portion with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 02, forming a turning portion with a pitch of 9 at the second end B2 of the stator core. Then it crosses layers and enters the eighth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10. In the eighth layer, it enters from slot 12 and exits from slot 19, forming a turning portion with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 30, forming a turning portion with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 37, forming a turning portion with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 48, forming a turning portion with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 01, forming a turning portion with a pitch of 7 at the second end B2 of the stator core. Then it crosses layers and enters the tenth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9;On the tenth layer, it enters from slot 10 and exits from slot 21, forming a turning part with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 28, forming a turning part with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 39, forming a turning part with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 46, forming a turning part with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 03, forming a turning part with a pitch of 11 at the second end B2 of the stator core and extends out from the first end B1 of slot 03.

[0070] The first winding coil 10 of the first winding unit 1 is connected to the second winding coil 21 of the second winding unit 2 to form a first branch. The second winding coil 11 of the first winding unit 1 is connected to the first winding coil 20 of the second winding unit 2 to form a second branch. The third winding coil 12 of the first winding unit 1 is connected to the third winding coil 22 of the second winding unit 2 to form a first branch.

[0071] Embodiment 2

[0072] As Figures 4-6 shown, compared with Embodiment 1, the radial number of layers of the stator core is different. In this application, the radial number of layers of the stator core is eight, and other settings are the same, which will not be elaborated here.

[0073] The first winding coil 10 of the first winding unit 1 is connected to the third winding coil 22 of the second winding unit 2 to form a first branch. The second winding coil 11 of the first winding unit 1 is connected to the second winding coil 21 of the second winding unit 2 to form a second branch. The third winding coil 12 of the first winding unit 1 is connected to the first winding coil 20 of the second winding unit 2 to form a first branch.

[0074] Embodiment 3

[0075] Compared with Embodiment 1, the number of slots separated by three consecutive winding coils in each winding unit during winding is different, and other settings are the same, as specifically shown below.

[0076] Specifically, as Figures 7-9 shown, in this embodiment, the first winding coil 10 of the first winding unit 1 is wound by alternately separating 11 slots and 7 slots in the first radial layer of the stator core, alternately separating 7 slots and 11 slots in the third radial layer of the stator core, alternately separating 9 slots in the fifth radial layer of the stator core, alternately separating 11 slots and 7 slots in the seventh radial layer of the stator core, and alternately separating 7 slots and 11 slots in the ninth radial layer of the stator core. The cross-layer transition part 3 is located at the first axial end of the stator core, and the specific settings are as follows:

[0077] The first winding coil 10 of the first winding unit 1 is wound starting from the radial first layer of the stator core. In the first layer, one end of the first winding coil 10 enters from slot 01 and exits from slot 12, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 19, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 30, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 37, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 48, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, and then makes a cross-layer entry into the third layer. The cross-layer transition part 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9; In the third layer, it enters from slot 03 and exits from slot 10, forming a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 21, forming a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 28, forming a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 39, forming a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 46, forming a turning portion with a pitch of 7 at the second end B2 of the stator core, and then makes a cross-layer entry into the fifth layer. The cross-layer transition part 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10; In the fifth layer, it enters from slot 02 and exits from slot 11, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 20, forming a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 29, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 38, forming a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 47, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, and then makes a cross-layer entry into the seventh layer. The cross-layer transition part 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8; In the seventh layer, it enters from slot 01 and exits from slot 12, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 19, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 30, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 37, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 48, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, and then makes a cross-layer entry into the ninth layer. The cross-layer transition part 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9;On the ninth layer, it enters from slot 03 and exits from slot 10, forming a turning section with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 21, forming a turning section with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 28, forming a turning section with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 39, forming a turning section with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 46, forming a turning section with a pitch of 7 at the second end B2 of the stator core, and extends out from the first end B1 of slot 46.;

[0078] The second winding coil 11 of the first winding unit 1 is wound successively and alternately with a separation of 9 slots on the first radial layer of the stator core, with a separation of 11 slots and 7 slots successively and alternately on the third radial layer of the stator core, with a separation of 7 slots and 11 slots successively and alternately on the fifth radial layer of the stator core, with a separation of 9 slots successively and alternately on the seventh radial layer of the stator core, and with a separation of 11 slots and 7 slots successively and alternately on the ninth radial layer of the stator core. The cross-layer transition part 3 is located at the first axial end of the stator core, and is specifically arranged as follows:

[0079] The second winding coil 11 of the first winding unit 1 is wound starting from the radial first layer of the stator core. In the first layer, one end of the first winding coil 10 enters from slot 02 and exits from slot 11, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 20, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 29, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 38, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 47, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, and then makes a cross-layer transition to enter the third layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8; In the third layer, it enters from slot 01 and exits from slot 12, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 19, forms a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 30, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 37, forms a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 48, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, and then makes a cross-layer transition to enter the fifth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9; In the fifth layer, it enters from slot 03 and exits from slot 10, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 21, forms a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 28, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 39, forms a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 46, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, and then makes a cross-layer transition to enter the seventh layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10; In the seventh layer, it enters from slot 02 and exits from slot 11, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 20, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 29, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 38, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 47, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, and then makes a cross-layer transition to enter the ninth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8;On the ninth layer, it enters from slot 01 and exits from slot 12, forming a turning part with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 19, forming a turning part with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 30, forming a turning part with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 37, forming a turning part with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 48, forming a turning part with a pitch of 11 at the second end B2 of the stator core, and extends out from the first end B1 of slot 48.;

[0080] The third winding coil 12 of the first winding unit 1 is wound successively with an alternating separation of 7 slots and 11 slots on the first radial layer of the stator core, with an alternating separation of 9 slots on the third radial layer of the stator core, with an alternating separation of 11 slots and 7 slots on the fifth radial layer of the stator core, with an alternating separation of 7 slots and 11 slots on the seventh radial layer of the stator core, and with an alternating separation of 9 slots on the ninth radial layer of the stator core. The cross-layer transition part 3 is located at the first axial end of the stator core, and is specifically arranged as follows:

[0081] The third winding coil 12 of the first winding unit 1 is wound starting from the radial first layer of the stator core. In the first layer, one end of the first winding coil 10 enters from slot 03 and exits from slot 10, forming a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 21, forms a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 28, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 39, forms a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 46, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, and then crosses layers to enter the third layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10; in the third layer, it enters from slot 02 and exits from slot 11, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 20, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 29, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 38, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 47, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, and then crosses layers to enter the fifth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8; in the fifth layer, it enters from slot 01 and exits from slot 12, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 19, forms a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 30, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 37, forms a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 48, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, and then crosses layers to enter the seventh layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9; in the seventh layer, it enters from slot 03 and exits from slot 10, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 21, forms a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 28, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 39, forms a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 46, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, and then crosses layers to enter the ninth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10;On the ninth layer, it enters from slot 02 and exits from slot 11, forming a turning part with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 20, forming a turning part with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 29, forming a turning part with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 38, forming a turning part with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 47, forming a turning part with a pitch of 9 at the second end B2 of the stator core, and extends out from the first end B1 of slot 48.;

[0082] The first winding coil 20 of the second winding unit 2 is wound on the second radial layer of the stator core with a 11-slot and 7-slot alternation at intervals, on the fourth radial layer of the stator core with a 7-slot and 11-slot alternation at intervals, on the sixth radial layer of the stator core with a 9-slot alternation at intervals, on the eighth radial layer of the stator core with a 11-slot and 7-slot alternation at intervals, on the tenth radial layer of the stator core with a 7-slot and 11-slot alternation at intervals. The cross-layer transition part 3 is located at the first axial end of the stator core, and is specifically arranged as follows:

[0083] The first winding coil 20 of the second winding unit 2 is wound starting from the second radial layer of the stator core. In the second layer, one end of the first winding coil 20 enters from slot 10 and exits from slot 21, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 28, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 39, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 46, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 03, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, and then makes a cross-layer and enters the fourth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9; In the fourth layer, it enters from slot 12 and exits from slot 19, forming a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 30, forming a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 37, forming a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 48, forming a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 01, forming a turning portion with a pitch of 7 at the second end B2 of the stator core, and then makes a cross-layer and enters the sixth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10; In the sixth layer, it enters from slot 11 and exits from slot 20, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 29, forming a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 38, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 47, forming a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 02, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, and then makes a cross-layer and enters the eighth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8; In the eighth layer, it enters from slot 10 and exits from slot 21, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 28, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 39, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 46, forming a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 03, forming a turning portion with a pitch of 11 at the second end B2 of the stator core, and then makes a cross-layer and enters the tenth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9;On the tenth layer, it enters from slot 12 and exits from slot 19, forming a turning part with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 30, forming a turning part with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 37, forming a turning part with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 48, forming a turning part with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 01, forming a turning part with a pitch of 7 at the second end B2 of the stator core and extending out from the first end B1 of slot 01.;

[0084] The second winding coil 21 of the second winding unit 2 is wound successively and alternately with a separation of 9 slots on the second radial layer of the stator core, wound successively and alternately with a separation of 11 slots and 7 slots on the fourth radial layer of the stator core, wound successively and alternately with a separation of 7 slots and 11 slots on the sixth radial layer of the stator core, wound successively and alternately with a separation of 9 slots on the eighth radial layer of the stator core, wound successively and alternately with a separation of 11 slots and 7 slots on the tenth radial layer of the stator core. The cross-layer transition part 3 is located at the first axial end of the stator core, and is specifically arranged as follows:

[0085] The second winding coil 21 of the second winding unit 2 is wound starting from the second radial layer of the stator core. In the second layer, one end of the first winding coil 20 enters from slot 11 and exits from slot 20, forming a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 29, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 38, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 47, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 02, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, and then crosses layers and enters the fourth layer. The cross-layer transition part 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8; In the fourth layer, it enters from slot 10 and exits from slot 21, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 28, forms a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 39, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, then enters from slot 46, forms a turning portion with a pitch of 7 at the first end B1 of the stator core, then enters from slot 03, forms a turning portion with a pitch of 11 at the second end B2 of the stator core, and then crosses layers and enters the sixth layer. The cross-layer transition part 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9; In the sixth layer, it enters from slot 12 and exits from slot 19, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 30, forms a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 37, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, then enters from slot 48, forms a turning portion with a pitch of 11 at the first end B1 of the stator core, then enters from slot 01, forms a turning portion with a pitch of 7 at the second end B2 of the stator core, and then crosses layers and enters the eighth layer. The cross-layer transition part 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10; In the eighth layer, it enters from slot 11 and exits from slot 20, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 29, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 38, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, then enters from slot 47, forms a turning portion with a pitch of 9 at the first end B1 of the stator core, then enters from slot 02, forms a turning portion with a pitch of 9 at the second end B2 of the stator core, and then crosses layers and enters the tenth layer. The cross-layer transition part 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8;On the tenth layer, it enters from slot 10 and exits from slot 21, forming a turning part with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 28, forming a turning part with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 39, forming a turning part with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 46, forming a turning part with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 03, forming a turning part with a pitch of 11 at the second end B2 of the stator core, and extends out from the first end B1 of slot 03.;

[0086] The third winding coil 22 of the second winding unit 2 is wound on the second radial layer of the stator core with a 7-slot and 11-slot alternation at intervals, on the fourth radial layer of the stator core with a 9-slot alternation at intervals, on the sixth radial layer of the stator core with an 11-slot and 7-slot alternation at intervals, on the eighth radial layer of the stator core with a 7-slot and 11-slot alternation at intervals, on the tenth radial layer of the stator core with a 9-slot alternation at intervals. The cross-layer transition part 3 is located at the first axial end of the stator core, and is specifically arranged as follows:

[0087] The third winding coil 22 of the second winding unit 2 is wound starting from the second radial layer of the stator core. In the second layer, one end of the first winding coil 20 enters from slot 12 and exits from slot 19, forming a turning portion with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 30, forming a turning portion with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 37, forming a turning portion with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 48, forming a turning portion with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 01, forming a turning portion with a pitch of 7 at the second end B2 of the stator core. Then it makes a cross-layer transition and enters the fourth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10. In the fourth layer, it enters from slot 11 and exits from slot 20, forming a turning portion with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 29, forming a turning portion with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 38, forming a turning portion with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 47, forming a turning portion with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 02, forming a turning portion with a pitch of 9 at the second end B2 of the stator core. Then it makes a cross-layer transition and enters the sixth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 8. In the sixth layer, it enters from slot 10 and exits from slot 21, forming a turning portion with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 28, forming a turning portion with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 39, forming a turning portion with a pitch of 11 at the second end B2 of the stator core. Then it enters from slot 46, forming a turning portion with a pitch of 7 at the first end B1 of the stator core. Then it enters from slot 03, forming a turning portion with a pitch of 11 at the second end B2 of the stator core. Then it makes a cross-layer transition and enters the eighth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 9. In the eighth layer, it enters from slot 12 and exits from slot 19, forming a turning portion with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 30, forming a turning portion with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 37, forming a turning portion with a pitch of 7 at the second end B2 of the stator core. Then it enters from slot 48, forming a turning portion with a pitch of 11 at the first end B1 of the stator core. Then it enters from slot 01, forming a turning portion with a pitch of 7 at the second end B2 of the stator core. Then it makes a cross-layer transition and enters the tenth layer. The cross-layer transition portion 3 is located at the first end B1 of the stator core, and the pitch of the formed turning portion is 10;On the tenth layer, it enters from slot 11 and exits from slot 20, forming a turning part with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 29, forming a turning part with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 38, forming a turning part with a pitch of 9 at the second end B2 of the stator core. Then it enters from slot 47, forming a turning part with a pitch of 9 at the first end B1 of the stator core. Then it enters from slot 02, forming a turning part with a pitch of 9 at the second end B2 of the stator core and extends out from the first end B1 of slot 02.

[0088] The first winding coil 10 of the first winding unit 1 is connected to the first winding coil 20 of the second winding unit 2 to form a first branch. The second winding coil 11 of the first winding unit 1 is connected to the third winding coil 22 of the second winding unit 2 to form a second branch. The third winding coil 12 of the first winding unit 1 is connected to the second winding coil 21 of the second winding unit 2 to form a first branch.

[0089] Embodiment 4

[0090] As Figures 11-12 shown, compared with Embodiment 3, the radial number of layers of the stator core is different. In this application, the radial number of layers of the stator core is eight, and other settings are the same, which will not be elaborated here.

[0091] The first winding coil 10 of the first winding unit 1 is connected to the third winding coil 22 of the second winding unit 2 to form a first branch. The second winding coil 11 of the first winding unit 1 is connected to the second winding coil 21 of the second winding unit 2 to form a second branch. The third winding coil 12 of the first winding unit 1 is connected to the first winding coil 20 of the second winding unit 2 to form a first branch.

[0092] Due to the above technical solution, any phase winding of the stator continuous winding includes at least two winding units. The multiple winding units are arranged at a certain pitch distance along the circumferential direction of the stator core, and each winding unit is a continuous winding structure, which includes multiple continuous winding coils arranged in sequence along the circumferential direction of the stator core and arranged in adjacent slots of the stator core. And each continuous winding coil is a continuous coil structure. Only the corresponding continuous winding coils need to be welded to form a parallel branch, and the number of solder joints is small. In any winding unit, in the turning part of the cross-layer transition part along the circumferential direction of the stator core, a part is arranged in an overlapping manner and another part is arranged in an enclosing manner, or a part is arranged in an enclosing manner and another part is arranged in an overlapping manner. In any layer, the turning parts on both axial sides of the stator core are arranged in an enclosing manner, so that the cross-action of the continuous winding coils in the stator continuous winding structure is reduced, the symmetry is high, the loop current is low, and the motor efficiency is high.

[0093] The above has described the embodiments of the present utility model in detail, but the above content is only the preferred embodiments of the present utility model and should not be considered as limiting the scope of implementation of the present utility model. Any equivalent changes and improvements made within the scope of the application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. A stator continuous winding, comprising a multi-phase winding, characterized in that: In any one-phase winding, it includes at least two winding units arranged in sequence along the circumferential direction of the stator core. Adjacent two of the said winding units are arranged in radially adjacent layers of the stator core. Each of the said winding units includes multiple sets of turning parts arranged on both axial sides of the stator core. Along the radial direction of the stator core, any one of the said winding units is wound across at least one layer, and a set of turning parts in the cross-layer transition part is arranged such that: along the circumferential direction of the stator core, a part of the turning parts is arranged in an overlapping manner, and the other part of the turning parts is arranged in an enclosing manner, or a part of the turning parts is arranged in an enclosing manner, and the other part of the turning parts is arranged in an overlapping manner.

2. The stator continuous winding according to claim 1, characterized in that: Each of the said winding units includes multiple continuous winding coils arranged in sequence along the circumferential direction of the stator core. The multiple continuous winding coils are arranged in adjacent slots in the same layer of the stator core. Each of the said continuous winding coils includes multiple turning parts arranged on both axial sides of the stator core.

3. The stator continuous winding according to claim 2, wherein: Multiple turning parts of any one of the said continuous winding coils in a part of the layers are arranged such that: along the circumferential direction of the stator core, the pitches of the respective turning parts located on both axial sides of the stator core are the same.

4. The stator continuous winding according to claim 3, characterized in that: Multiple turning parts of any one of the said continuous winding coils in the remaining layers are arranged such that: along the circumferential direction of the stator core, the pitches of two adjacent turning parts located on both axial sides of the stator core are different.

5. The stator continuous winding according to claim 4, characterized in that: In any one layer, the pitches of two adjacent turning parts located on any one axial side of the stator core are the same.

6. The stator continuous winding according to any one of claims 2-5, characterized in that: Except for the turning parts in the cross-layer transition part, the other multiple sets of turning parts of any one of the said winding units are arranged in an enclosing manner.

7. The stator continuous winding according to claim 6, wherein: The turning parts of multiple cross-layer transition parts of any one of the said winding units are all arranged on the same axial side of the stator core.

8. The stator continuous winding according to claim 7, characterized in that: Among the multiple layers where any one of the said continuous winding coils is located, adjacent three layers are set as a layer group, and along the radial direction of the stator core, multiple of the said layer groups are arranged in sequence.

9. A stator, characterized in that: It includes the stator continuous winding according to any one of claims 1-8.

10. A motor, characterized in that: It includes the stator according to claim 9.

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