Winding structure, stator, axial electric motor, power assembly, and output device

Abstract

Provided in the present invention are a winding structure, a stator, an axial electric motor, a power assembly, and an output device. The winding structure (30) comprises a plurality of conductor components (310), wherein the plurality of conductor components (310) are arranged in an annular body (300); each conductor component (310) comprises a main body portion (311), the main body portion (311) is arranged to extend in the radial direction of the annular body (300), the main body portions (311) of at least some of the plurality of conductor components (310) are connected in series by means of a connecting wire (G4), and lead-out wires (G5) are respectively provided at two ends of a winding formed by connecting the plurality of main body portions (311) in series. This structure not only facilitates the positioning of the main body portions (311) of the conductor components (310), but also facilitates the series connection of the conductor components (310) and the arrangement of the lead-out wires (G5) without requiring a complicated winding process, thereby simplifying the structure and facilitating assembly and preparation.

Description

Winding structure, stator, axial motor, powertrain and output device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on July 21, 2023, with application number 202310905620.9 and invention name “Winding structure, stator, axial motor, powertrain and output device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the field of motor technology, and more specifically, relates to a winding structure, a stator, an axial motor, a power assembly, and an output device. Background Art

[0003] The statements herein only provide background information related to the present application and do not necessarily constitute prior art. An electric motor, such as an electric motor or a generator, has a stator and a rotor. Among them, the stator structure of some electric motors is mainly composed of a stator core and a winding wound on the stator core; and the axial motor has gained more and more attention due to its advantages such as compact structure, high efficiency and high power density. Existing motors usually have a plurality of slots on the stator core, each phase coil has a plurality of pole pairs and its corresponding winding is wound in each slot, and a plurality of coils are arranged in each slot in a stacked manner; among them, the use of flat wire windings can better adapt to the shape of the stator slots and improve the full slot rate. However, the winding topology of the current axial motor is relatively complex and difficult to wind using flat wire.

[0004] Application Contents

[0005] The purpose of the embodiments of the present application is to provide a winding structure, a stator, an axial motor, a power assembly and an output device to solve the problem in the related art that the winding of the axial motor is difficult to wind using flat wire.

[0006] In a first aspect, an embodiment of the present application provides a winding structure, comprising a plurality of conductor components, wherein the plurality of conductor components are arranged in a ring shape;

[0007] The conductor component includes a main body portion, which extends radially along the annular body. The main bodies of at least some of the conductor components are connected in series through connecting wires, and lead wires are provided at both ends of the winding formed by the series connection of the multiple main bodies.

[0008] In the technical solution of the embodiment of the present application, a plurality of conductor components are provided and arranged in a ring shape to facilitate the position layout of each conductor component; the main body of the conductor component is arranged radially, and the main bodies of at least some of the multiple conductor components are connected in series through connecting wires, and lead wires are provided at both ends of the winding formed by the multiple main body components connected in series. This not only facilitates the position setting of the main body of the conductor component, but also facilitates the series connection of the conductor components and the setting of the lead wires. There is no need for a complicated winding process, the structure is simplified, and it is convenient for assembly and preparation.

[0009] In some embodiments, the cross-section of the conductor component is circular, elliptical, or polygonal. The cross-section of the conductor component is rectangular. The conductor component is a flat wire conductor, and the stator winding obtained by winding the flat wire conductor is used to construct the flat wire motor.

[0010] The conductor component of this structure is convenient for selecting the shape of the conductor component and for manufacturing the winding structure.

[0011] In some embodiments, the connecting line includes a first connecting line and a second connecting line, the conductor components are arranged in pairs, and one end of the two main bodies of each pair of conductor components is connected in series through the first connecting line; in the two pairs of conductor components in series: the other end of the main body of one pair of conductor components is connected to the other end of the main body of one pair of conductor components through the second connecting line.

[0012] This structure facilitates the series connection of conductor components, especially when two pairs of conductor components are connected using a first connecting line, which makes the connection more convenient. The other end of a main body in a pair of conductor components is connected to the other end of a main body in the other pair of conductor components through a second connecting line to connect the two pairs of conductor components in series, so that the other ends of the two main bodies in the middle of the two pairs of conductor components in series are connected using the second connecting line. The shape of the second connecting line can also be made first and then connected, which is also convenient for assembly and thus facilitates the production of the winding structure.

[0013] In some embodiments, the first connecting line has an integral span.

[0014] The span of the first connecting line is set to be a full span, which is convenient for batch molding and production to reduce costs, and is also convenient for connecting paired conductor components.

[0015] In some embodiments, the annular body is stacked with N main body layers along the axial direction, and the two main body parts of each pair of conductor components are respectively located in the Mth layer and the M-1th layer; N is an even number, M is an even number, and N≥M.

[0016] An even number of layers of main body parts are arranged at the position of each main body part to increase the magnetic force of the winding structure during operation; and the main body parts of each pair of conductor components are arranged at the Mth layer and the M-1th layer to facilitate the assembly of each pair of conductor components.

[0017] In some embodiments, along the axial direction of the annular body: the lead wires connected to both ends of the winding formed by the series-connected main body parts are located in the same layer, the main body parts connected to the lead wires are located in the first layer, the second connection wires located in the first layer are the first-layer connection wires, and the span of the first-layer connection wires is long or short;

[0018] The layer farthest from the first layer is the last layer, the second connecting line at the last layer is the last layer connecting line, and the span of the last layer connecting line is the full distance;

[0019] The second connection line connecting the Hth layer main body and the H+1th layer main body is a cross-layer connection line. The span of the cross-layer connection line is long, full or short. H is an even number and N≥H.

[0020] Placing the lead-out wires on the first layer facilitates their connection and extraction for ease of use. Setting the span of the first-layer connecting wires to long or short allows for more flexible setup of the first-layer connecting wires, facilitating the placement of conductor components for winding structure fabrication. Setting the span of the last-layer connecting wires to full length facilitates the formation and connection of the last-layer connecting wires. Setting the span of the cross-layer connecting wires to full length, long, or short lengths allows for more flexible setup of the cross-layer connecting wires, facilitating the placement of conductor components for winding structure fabrication.

[0021] In some embodiments, the winding structure forms P pairs of magnetic poles, the number of main bodies connected in series is A, the first main body and the Ath main body are respectively connected to the lead wire; in the second connecting line connecting the 2KPth main body and the 2KP+1th main body: the second connecting line connecting the 2KNPth main body and the 2KNP+1th main body is the first layer connecting line, the second connecting line connecting the (2K-1)NPth main body and the (2K-1)NP+1th main body is the last layer connecting line, and the remaining second connecting lines are cross-layer connecting lines, A is a positive integer, P is a positive integer, K is a positive integer, and 2KNP <A。

[0022] Through the above structure, the positions of the first layer connection lines, the last layer connection lines and the cross-layer connection lines and the numbers of the connected main parts can be determined to facilitate pre-processing and assembly connection.

[0023] In some embodiments, the conductor component further includes an inner segment and an outer segment, the inner segment is connected to the radial inner end of the main body, and the outer segment is connected to the radial outer end of the main body, and the two inner segments of each pair of conductor components are connected to form a first connecting line; in the two pairs of conductor components connected in series, the outer segment of the main body of one pair of conductor components is connected to the outer segment of the main body of one pair of conductor components to form a second connecting line.

[0024] The conductor components are provided with inner segments and outer segments, and the two inner segments of each pair of conductor components are connected to form a first connecting line, so as to facilitate the setting of the first connecting line and the series connection of the pair of conductor components; and the two outer segments are connected to form a second connecting line, so as to connect the two pairs of conductor components in series, which is also convenient for the setting of the second connecting line; in addition, this structure can also reduce the occupied space and reduce the volume of the winding structure.

[0025] In some embodiments, the conductor component is made of flat wire in one piece.

[0026] The conductor component is made of flat wire in one piece, that is, the inner section, the main body and the outer section are formed in one piece of flat wire, which can facilitate the processing and production of the conductor component to maintain the uniformity of the resistivity along the length of the conductor component, reduce the impedance of the conductor component, and improve the conductive performance of the conductor component.

[0027] In some embodiments, each pair of conductor components is manufactured by integrally forming a flat wire.

[0028] Each pair of conductor components is formed into one piece using a flat wire. That is, two conductor components are preformed using one flat wire, and the inner sections of the two conductor components are formed into one piece, which is convenient for processing and manufacturing, and also convenient for assembling the conductor components to form a winding structure.

[0029] In some embodiments, in the two pairs of conductor components connected in series, the two outer segments in the middle are welded together.

[0030] The two outer segments in the middle of the two pairs of conductor components that need to be connected in series are welded together, that is, the two outer segments forming the second connecting line are welded to improve the connection strength, ensure good conductivity between the two outer segments, reduce the impedance between the two outer segments, and facilitate connection.

[0031] In some embodiments, the winding structure forms P pairs of magnetic poles, where P is a positive integer.

[0032] The magnetic pairs formed by the winding structure are set to a positive integer, and the number of magnetic pairs can be set as needed to facilitate the design and application scope of the winding structure.

[0033] In some embodiments, the annular body is stacked with N main body layers along the axial direction, and the number of main body layers located in the same axial layer of the annular body and in the same magnetic pole is q, where N is an even number and q is a positive integer.

[0034] When the above structure is applied to a stator, the number of slots per pole per phase of the stator can be q, which facilitates the design and manufacture of the winding structure; q is a positive integer, and the number of slots per pole per phase is set as needed to improve the applicability of the winding structure design.

[0035] In some embodiments, when q≥2, the q main body portions located in the same axial layer of the annular body and in the same magnetic pole are arranged adjacent to each other.

[0036] By arranging q main bodies in the same layer and in the same magnetic pole adjacent to each other, the generated magnetic field can be more concentrated, thereby increasing the intensity of the generated magnetic field.

[0037] In some embodiments, the winding structure includes a single-phase winding, the winding being made using a plurality of conductor components connected in series;

[0038] Alternatively, the winding structure includes a multi-phase winding, which is made of a plurality of conductor components connected in series, each phase winding has the same structure, and the multi-phase winding is evenly distributed along the circumference of the winding structure.

[0039] The winding structure includes a single-phase winding, which is simple in structure and can be applied to a single-phase stator. When the winding structure includes a multi-phase winding, the multi-phase winding structure is set to be the same to simplify the structure of each phase winding, facilitate processing and manufacturing, and facilitate application to a multi-phase stator.

[0040] In a second aspect, an embodiment of the present application provides a stator comprising a winding structure as described in any of the above embodiments.

[0041] The stator of the embodiment of the present application uses the above-mentioned winding structure, which simplifies the structure and facilitates assembly and manufacturing.

[0042] In some embodiments, the stator further includes a stator core, and the stator core is provided with stator slots for accommodating the main body of the winding structure, and the main body is placed in the corresponding stator slots.

[0043] Setting up a stator core and placing the main body in the corresponding stator slot not only facilitates fixing the main body and then installing a fixed winding structure, but also can enhance the magnetic field strength generated by the winding structure through the stator core, thereby improving the power of the axial motor using the stator.

[0044] In some embodiments, the stator slots are provided on one axial side of the stator core; or, the stator slots are provided on two opposite axial sides of the stator core.

[0045] The stator slots are arranged on one side of the stator core, and the winding structure can be installed on one side of the stator core, so as to be suitable for an axial motor in which the rotor is arranged on one side of the stator.

[0046] Stator slots are respectively arranged on opposite sides of the stator core, and winding structures can be respectively installed on opposite sides of the stator core, so as to be suitable for an axial motor in which rotors are respectively arranged on opposite sides of the stator.

[0047] In a third aspect, an embodiment of the present application provides an axial motor, comprising a rotating shaft, a rotor, and a stator as described in any of the above embodiments, wherein the rotor is fixedly mounted on the rotating shaft, the stator is rotatably mounted on the rotating shaft, and the stator is located on the side of the rotor.

[0048] The axial motor of the embodiment of the present application uses the stator of the above embodiment, and the structure is simplified, which can reduce costs, improve manufacturing efficiency, and reduce the size of the axial motor.

[0049] In some embodiments, the stator is disposed on at least one side of the rotor; and / or the rotor is disposed on at least one side of the stator.

[0050] Arranging the stator on at least one side of the rotor can facilitate the position layout of the stator. Arranging the rotor on at least one side of the stator can facilitate the position layout of the rotor.

[0051] In some embodiments, there are multiple rotors, and a stator is provided between two adjacent rotors; and / or there are multiple stators, and a rotor is provided between two adjacent stators.

[0052] By providing multiple rotors, a multi-rotor axial motor structure can be realized. By providing multiple stators, a multi-rotor axial motor structure can be realized.

[0053] In a fourth aspect, an embodiment of the present application provides a powertrain, comprising a stator as described in any of the above embodiments; or comprising an axial motor as described in the above embodiments.

[0054] In a fifth aspect, an embodiment of the present application provides an output device, comprising an axial motor as described in any of the above embodiments; or comprising a powertrain as described in the above embodiments.

[0055] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0057] FIG1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

[0058] FIG2 is a schematic structural diagram of an axial motor according to some embodiments of the present application;

[0059] FIG3 is a schematic structural diagram of an axial motor according to some other embodiments of the present application;

[0060] FIG4 is a schematic structural diagram of an axial motor according to some other embodiments of the present application;

[0061] FIG5 is a schematic structural diagram of an axial motor according to some other embodiments of the present application;

[0062] FIG6 is a schematic diagram of the exploded structure of a stator according to some embodiments of the present application;

[0063] FIG7 is a schematic structural diagram of a conductor component according to some embodiments of the present application;

[0064] FIG8 is a schematic structural diagram of a pair of conductor components according to some embodiments of the present application;

[0065] FIG9 is a schematic diagram of the connection structure of the U-phase winding of the winding structure in some embodiments of the present application;

[0066] FIG10 is a schematic diagram of the connection structure of the V-phase winding of the winding structure in FIG9;

[0067] FIG11 is a schematic diagram of the connection structure of the W-phase winding of the winding structure in FIG9 ;

[0068] FIG12 is a schematic diagram of the connection structure of the U-phase winding of the winding structure in some embodiments of the present application;

[0069] FIG13 is a schematic diagram of the connection structure of the U-phase winding of the winding structure of other embodiments of the present application;

[0070] FIG14 is a schematic diagram of the connection structure of the U-phase winding of the winding structure in some other embodiments of the present application;

[0071] FIG15 is a schematic diagram of the connection structure of the U-phase winding of the winding structure in some other embodiments of the present application;

[0072] FIG16 is a schematic diagram of the connection structure of the U-phase winding of the winding structure in some other embodiments of the present application;

[0073] FIG17 is a schematic diagram of the connection structure of the U-phase winding of the winding structure in some other embodiments of the present application;

[0074] FIG18 is a schematic diagram of the connection structure of the U-phase winding of the winding structure in some embodiments of the present application;

[0075] FIG19 is a schematic diagram of the connection structure of the U-phase winding of the winding structure of other embodiments of the present application;

[0076] FIG20 is a schematic diagram of the connection structure of the U-phase winding of the winding structure in some further embodiments of the present application.

[0077] Among them, the main markings of the figures in the figure are: 1000, vehicle; 1001, powertrain; 100, axial motor; 200, transmission; 1002, controller; 1003, battery; 10, rotor; 11, rotating shaft; 20, stator; 21, stator core; 211, stator slot; 22, fixing bracket; 30, winding structure; 300, annular body; 310, conductor component; 311, main body; 312, inner segment; 313, outer segment; G4, connecting line; G41, first connecting line; G42, second connecting line; G421, first-layer connecting line; G422, last-layer connecting line; G423, cross-layer connecting line; G424, inter-layer connecting line; G5, lead-out line. DETAILED DESCRIPTION

[0078] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0079] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0080] In the description of the embodiments of this application, the technical terms "first," "second," etc., are used solely to distinguish between different objects and should not be understood to indicate or imply relative importance, or to implicitly specify the quantity, specific order, or primary-secondary relationship of the technical features indicated. Therefore, a feature designated "first" or "second" may explicitly or implicitly include one or more of such features.

[0081] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments in any suitable manner.

[0082] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0083] In the description of the embodiments of this application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more (including two groups), and "multiple sheets" refers to two or more (including two sheets). "Several" means one or more, unless otherwise specifically defined.

[0084] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0085] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0086] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0087] In the description of the embodiments of this application, unless otherwise specified or limited, the technical term "adjacent" refers to proximity in position. For example, if there are three components A1, A2, and B, and the distance between A1 and B is greater than the distance between A2 and B, then A2 is closer to B than A1, that is, A2 is adjacent to B, or B is adjacent to A2. For another example, when there are multiple components C, the multiple components C are C1, C2, ..., C N , when one of the C components, such as C2, is closer to the B component than other C components, then B is adjacent to C2, or it can be said that C2 is adjacent to B.

[0088] In the embodiments of this application, the motor is also called an electric motor. A motor generally consists of a rotor and a stator. A motor is a device that converts electrical energy into mechanical energy and vice versa. It includes motors and generators. The fixed part of the motor is called the stator, while the rotating part is called the rotor.

[0089] For an electric motor, the stator refers to the stationary part of the motor, whose function is to generate a rotating magnetic field. The rotor refers to the rotating component of the motor, whose function is to realize the conversion of electrical energy into mechanical energy. The stator generally generates a rotating magnetic field through its windings to drive the rotor to rotate. The stator winding refers to the winding installed on the stator. Winding is a general term for a phase or an entire electromagnetic circuit composed of multiple coils or coil groups. Coil group: refers to the q coils belonging to the same phase winding under one pole pitch in the motor connected in series into a group, which is called a coil group, also called a pole phase group. The current direction and electromagnetic effect of each coil in the pole phase group are the same, and these coils together generate the magnetic poles in the phase winding.

[0090] Some other terms in the embodiments of this application are explained as follows.

[0091] Phase winding: refers to a set of windings connected in series or parallel by one or more parallel branches according to the prescribed connection method.

[0092] Parallel branches: One or more groups of coils in a motor, connected together according to the prescribed wiring method, are called parallel branches. For motors with low power ratings, all the winding pole-phase groups are generally simply connected in series according to the prescribed wiring method into one branch, and then connected to the power supply. However, for motors with higher power ratings, due to the higher current requirements, all the winding pole-phase groups must first be connected in series into two or more branches, and then connected in parallel according to the prescribed wiring method to the power supply. This is called a parallel branch.

[0093] Pole Pair Count: When the motor windings are energized, they generate a magnetic field, which in turn forms magnetic poles. These poles appear in pairs of north and south poles, also known as the pole pair count. When the pole pair count is P, the number of poles is 2P, and the number of poles should be an even number.

[0094] Pole pitch refers to the distance between each magnetic pole of a motor along the circumferential surface of the air gap. Pole pitch can be expressed as the number of stator slots in the stator core. For example, pole pitch is Z / 2P, where Z is the total number of stator slots in the stator core and P is the number of pole pairs. Stator slots are the slots in the stator core that hold the coils.

[0095] Pitch: This refers to the distance between the centers of the two active sides of a coil on the stator circumference. Counted in stator slots, this is the number of slots occupied by the two active sides of a coil. Pitch can be represented by y, where the value of y is expressed in slots. For example, if y = 8, it is customarily expressed as (1-9) slots. This means that one side of the coil fits into the first slot, and the other side fits into the ninth slot. The distance between the centerlines of the slots spanned by the two sides is 8 slots (the first and ninth slots are each counted halfway).

[0096] When the pitch y is equal to the pole pitch, it is called the full pitch, also known as the full pitch; when the pitch y is less than the pole pitch, it is called the short pitch; when the pitch y is greater than the pole pitch, it is called the long pitch.

[0097] Span: refers to the distance between the two sides of the same element in the motor winding on the armature surface, usually expressed by the number of stator slots opened on the stator core.

[0098] A connecting wire is a conductive wire that connects the two active sides of a coil. A connecting wire pitch is the equivalent span between the conductors in the slots it connects. Depending on the pitch span, connecting wires can be categorized as full-pitch, short-pitch, or long-pitch. Full-pitch refers to a connecting wire with a pitch equal to the pole pitch. Short-pitch refers to a connecting wire with a pitch less than the pole pitch. Long-pitch refers to a connecting wire with a pitch greater than the pole pitch.

[0099] Lead wire: refers to the conductive wire connecting the two ends of the winding to lead out the control circuit connected to the motor, which is used to supply power to the coil in the winding so that the coil generates a magnetic field.

[0100] Number of slots per pole per phase: The number of slots per pole per phase is generally represented by q. The number of slots per pole per phase is the number of slots occupied by each phase winding of the motor under each magnetic pole.

[0101] Electric motors can be divided into radial motors and axial motors. A radial motor refers to a motor in which the stator and rotor are arranged radially, such as a motor in which the stator is located on the outer periphery of the rotor or the rotor is located on the outer periphery of the stator, that is, a motor in which the stator is sleeved on the outer periphery of the rotor or the rotor is sleeved on the outer periphery of the stator is a radial motor. An axial motor refers to a motor in which the stator and rotor are arranged axially. Axial motors are gaining more and more attention due to their compact structure, high efficiency, and high power density. For axial motors, the stator is located on the side of the rotor, and accordingly, the rotor is also located on the side of the stator. For the sake of convenience of description, the side of the rotor close to the stator is defined as the stator side, and the side of the stator close to the rotor is defined as the rotor side.

[0102] The stator generally consists of a stator core (also called a stator iron core) and windings. The windings are wound around the stator core. To facilitate winding, the stator core also has stator slots to accommodate the windings. The stator core strengthens the magnetic field generated by the windings, thereby increasing the power of the stator. Of course, for some motors, to reduce weight, it is also possible to omit the stator core and directly use the magnetic field generated by the windings, thus forming an ironless stator.

[0103] The torque output of a motor is determined by the voltage applied to the winding wire, the wire density, and the number of coils. The maximum speed is determined by the current flowing through the coils. The slot fill factor is the ratio of the cross-sectional area occupied by the copper wire within the stator slots to the total available space within the slots. The greatest challenge in stator manufacturing is maximizing the amount of copper wire that can be inserted into each slot (often referred to as the "slot fill factor") to achieve maximum torque output.

[0104] Flat wire windings are made from flat wire, which can better adapt to the shape of the stator slots and improve the slot fill rate. Flat wire refers to a conductor with a width greater than thickness and a rectangular cross-section.

[0105] Current axial motor winding topologies typically use wire to directly wind coils onto the stator core, or to wind the coils before mounting them on the stator core. However, due to the wide width of the flat wire, bending it in the width direction is difficult, making coil winding with flat wire challenging. Furthermore, for high-power motors, the flat wire has a larger cross-section. Using flat wire directly to wind coils results in a loose coil, which reduces the slot fill factor.

[0106] Based on the above considerations, in order to solve the problem that the winding of the axial motor is difficult to wind using flat wire, an embodiment of the present application provides a winding structure, in which multiple conductor components are connected in series through connecting wires, and the conductor components are arranged in a ring shape, so that the position layout of each conductor component is convenient. Lead wires are set at both ends of the multiple main body parts formed in series. This not only facilitates the position setting of the main body of the conductor component, but also facilitates the setting of connecting the conductor component in series to the lead wire. There is no need for complicated winding process, the structure is simplified, and it is convenient for assembly and preparation.

[0107] The stator disclosed in the embodiments of the present application can be used in an axial motor. The axial motor can be used as a power structure in a powertrain, output device, etc. as a power source. The powertrain can also be used in an output device. The output device can be, but is not limited to, an electric toy, a power tool, an electric bicycle, an electric motorcycle, an electric car, a ship, a spacecraft, etc. Electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0108] The output device can be an electric vehicle or a vehicle chassis. The axial motor can be integrated with one or more of the power supply, controller, gearbox, etc. to form a powertrain.

[0109] For the convenience of explanation, an output device is provided in accordance with an embodiment of the present application, and the output device is described by taking a vehicle as an example.

[0110] Please refer to Figure 1, which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A powertrain 1001 is provided inside the vehicle 1000, and the powertrain 1001 can be provided at the bottom, head or tail of the vehicle 1000. The powertrain 1001 can be used to provide driving force to the vehicle 1000. The vehicle 1000 can also include a controller 1002 and a battery 1003. The controller 1002 is used to control the operation of the powertrain 1001, for example, to control the start, speed change and stop of the powertrain 1001. The controller 1002 can also be used to control the battery 1003 to supply power to the powertrain 1001, for example, to meet the power requirements of the vehicle 1000 during start-up, navigation and driving.

[0111] In some embodiments, the powertrain 1001 includes an axial motor 100, which serves as a power source for the powertrain 1001. It is understood that the powertrain 1001 is not limited to being used in the vehicle 1000, but may also be used in other devices requiring power output.

[0112] In some embodiments, the powertrain 1001 may further include a transmission 200 connected to the axial motor 100 to achieve torque change in the axial motor 100. A transmission (also known as a gearbox) is a mechanism used to change the speed and torque of an input device. It can set the output shaft to an input shaft transmission ratio at a fixed value or change the output shaft to input shaft transmission ratio.

[0113] In some embodiments, the controller 1002 may be integrated with the axial electric machine 100 to form a powertrain 1001 .

[0114] In some embodiments, the battery 1003 may be integrated with the axial electric machine 100 to form a powertrain 1001 .

[0115] In some embodiments, the transmission 200 and the controller 1002 may be integrated with the axial electric machine 100 to form a powertrain 1001 .

[0116] In some embodiments, the transmission 200, the controller 1002, and the battery 1003 may be integrated with the axial motor 100 to form a powertrain 1001. Of course, the powertrain 1001 may also integrate other structures, such as thermal management devices.

[0117] Please refer to FIG. 2 , which is a schematic structural diagram of an axial motor 100 provided in one embodiment of the present application.

[0118] An embodiment of the present application provides an axial motor 100 , including a rotating shaft 11 , a stator 20 and a rotor 10 . The rotor 10 is fixedly mounted on the rotating shaft 11 , and the stator 20 is rotatably mounted on the rotating shaft 11 . The stator 20 is located on a side of the rotor 10 .

[0119] The rotating shaft 11 is the shaft for outputting power in the axial motor 100. The rotating shaft 11 is fixedly connected to the rotor 10 and can rotate to output power under the drive of the rotor 10. The stator 20 is rotatably mounted on the rotating shaft 11 so that the rotating shaft 11 can rotate relative to the stator 20.

[0120] The stator 20 is located on a side of the rotor 10 , which means that the stator 20 is located on one side of the rotor 10 in the axial direction, so that the stator 20 drives the rotor 10 to rotate, thereby driving the rotating shaft 11 to rotate.

[0121] The axial direction refers to the axial direction of the rotating shaft 11 , and the axial direction of the rotating shaft 11 is also the axial direction of the stator 20 and the axial direction of the rotor 10 . Therefore, the axial direction also refers to the axial direction of the rotor 10 .

[0122] The radial direction refers to the radial direction of the rotating shaft 11 , and the radial direction of the rotating shaft 11 is also the radial direction of the stator 20 and the radial direction of the rotor 10 . Therefore, the radial direction also refers to the radial direction of the rotor 10 .

[0123] The circumferential direction refers to a direction around the axis of the rotating shaft 11 , which is also a direction around the axis of the rotor 10 .

[0124] In some embodiments, there can be one rotor 10 and one stator 20, and the stator 20 is located on one side of the rotor 10. The axial motor 100 has a simple structure and a small size. In this structure, the side of the rotor 10 close to the stator 20 is the stator side.

[0125] Please refer to FIG. 3 , which is a schematic structural diagram of an axial motor 100 provided in one embodiment of the present application.

[0126] In some embodiments, an axial motor 100 includes two stators 20 and a rotor 10. The two stators 20 are located on opposite sides of the rotor 10. This allows the two stators 20 to drive the rotor 10 to rotate, thereby increasing output power. Furthermore, this axial motor 100 has a more compact structure. In this structure, since the stators 20 are located on opposite sides of the rotor 10, both opposite sides of the rotor 10 are stator sides.

[0127] Please refer to FIG. 4 , which is a schematic structural diagram of an axial motor 100 provided in one embodiment of the present application.

[0128] In some embodiments, an axial motor 100 includes two rotors 10 and a stator 20. The two rotors 10 are located on opposite sides of the stator 20. This allows a single stator 20 to drive both rotors 10, and in turn, a single rotating shaft 11, thereby increasing output power. Furthermore, this axial motor 100 has a more compact structure. In this structure, since the stator 20 is located on one side of each rotor 10, the side of the rotor 10 closest to the stator 20 is the stator side.

[0129] Please refer to FIG5 , which is a schematic structural diagram of an axial motor 100 provided in one embodiment of the present application.

[0130] In some embodiments, the axial motor 100 includes multiple rotors 10 and multiple stators 20. A stator 20 is positioned between two adjacent rotors 10, and a rotor 10 is positioned between two adjacent stators 20. The multiple stators 20 drive the multiple rotors 10 to rotate, which in turn drives the shaft 11 to rotate, thereby increasing output power. In this structure, the side of each rotor 10 closest to the stator 20 is the stator side.

[0131] Please refer to FIG. 6 , which is a schematic diagram of the exploded structure of the stator 20 according to some embodiments of the present application.

[0132] Please refer to FIG2 . One embodiment of the present application provides a stator 20 including a stator core 21 and a winding structure 30 . The winding structure 30 is mounted on the stator core 21 , and the stator core 21 is provided with stator slots 211 for mounting the winding structure 30 . The winding structure 30 is provided on the stator core 21 so as to generate a rotating magnetic field when in use. The stator core 21 is provided to facilitate the fixed installation of the winding structure 30 , and the stator core 21 can be used to enhance the distribution and strength of the magnetic field generated by the winding structure 30 , thereby increasing the power of the axial motor 100 using the stator 20 .

[0133] The stator core 21 can be made of magnetically conductive materials such as silicon steel sheets. The stator core 21 of the axial motor 100 can be formed by winding silicon steel sheets to reduce eddy current losses and improve the operating efficiency of the axial motor 100 using the stator 20. Of course, the stator core 21 can also be made of other magnetically conductive materials.

[0134] In some embodiments, the stator 20 further includes a fixing bracket 22. The fixing bracket 22 is a structural member used to fix and support the stator core 21. The stator core 21 is mounted on the fixing bracket 22. The fixing bracket 22 supports the stator core 21 and, in turn, the winding structure 30, facilitating installation and use of the stator 20.

[0135] In some embodiments, the fixing bracket 22 can be made of steel plates to effectively support the stator core 21. Furthermore, during connection, the stator core 21 and the fixing bracket 22 can be welded together so that the fixing bracket 22 can effectively support the stator core 21. In particular, when the stator core 21 is formed by winding silicon steel sheets, welding the fixing bracket 22 to the stator core 21 can also help to stabilize the shape of the stator core 21, facilitating installation of the winding structure 30 on the stator core 21.

[0136] In some embodiments, a stator slot 211 is provided on one axial side of the stator core 21 .

[0137] One side of the stator core 21 refers to one side along the axial direction of the stator core 21. Stator slots 211 are provided on one side of the stator core 21, and the winding structure 30 can be installed on this side of the stator core 21 to form a stator 20 structure with windings provided on one side.

[0138] A stator slot 211 is provided on one side of the stator core 21 , and a winding structure 30 can be installed on one side of the stator core 21 so that the stator 20 using the stator core 21 can be suitable for the axial motor 100 , and the axial motor 100 can have a rotor 10 provided on one side of its stator 20 .

[0139] In some embodiments, referring to FIG. 4 , stator slots 211 are respectively defined on two opposite axial sides of the stator core 21 .

[0140] The opposite sides of the stator core 21 refer to the opposite sides along the axial direction of the stator core 21. Stator slots 211 are provided on the opposite sides of the stator core 21, and winding structures 30 can be installed on both sides of the stator core 21 to form a stator 20 structure with windings provided on both sides.

[0141] Stator slots 211 are respectively provided on opposite sides of the stator core 21, and winding structures 30 can be respectively installed on opposite sides of the stator core 21, so that the stator 20 using the stator core 21 can be suitable for the axial motor 100, and the axial motor 100 can respectively provide rotors 10 on opposite sides of its stator 20.

[0142] Please refer to Figures 6 to 11, Figure 6 is a schematic diagram of the decomposed structure of the stator 20 of some embodiments of the present application; Figure 7 is a schematic diagram of the structure of a single conductor component 310 of some embodiments of the present application; Figure 8 is a schematic diagram of the structure of a pair of conductor components 310 in the paired conductor components of some embodiments of the present application; Figure 9 is a schematic diagram of the connection structure of the U-phase winding of the winding structure 30 of some embodiments of the present application; Figure 10 is a schematic diagram of the connection structure of the V-phase winding of the winding structure 30 in Figure 9; Figure 11 is a schematic diagram of the connection structure of the W-phase winding of the winding structure 30 in Figure 9.

[0143] An embodiment of the present application provides a winding structure 30, including multiple conductor components 310, which are arranged in a ring body 300; as shown in Figure 7, the conductor component 310 includes a main body 311, which is arranged to extend radially along the ring body 300. The main bodies 311 of at least some of the multiple conductor components 310 are connected in series through a connecting wire G4, and lead wires G5 are provided at both ends of the coil formed by the multiple main bodies 311 connected in series.

[0144] Conductor component 310 is an electrical conductor made of wire. The wire used to make the winding is typically made of copper to minimize resistance and allow for greater current flow. It is understood that the wire may also be made of other materials with better conductivity. For example, in some embodiments, the wire may be made of aluminum or other materials.

[0145] The ring body 300 refers to a structure that is annular as a whole. Multiple conductor components 310 are arranged in the ring body 300: this means that the winding structure 30 formed by these conductor components 310 is annular. When the winding structure 30 includes a single-phase winding, the single-phase winding is arranged and manufactured using the conductor components 310, and its overall shape is annular. In this case, the ring body 300 is the entire winding structure 30. When the winding structure 30 includes a multi-phase winding, each phase winding is arranged and manufactured using the conductor components 310, and each phase winding is annular as a whole. The winding structure 30 formed by the multi-phase winding is also annular as a whole. In this case, the ring body 300 is the structure formed by one of the phase windings; the ring bodies 300 formed by the multi-phase winding are combined to form the winding structure 30.

[0146] The main body 311 is a partial structure of the conductor component 310 and is extended along the radial direction of the annular body 300 so as to be applied in the axial motor 100 .

[0147] The connection line G4 is a conductive line connecting the two main body parts 311 .

[0148] The main bodies 311 of multiple conductor components 310 are connected in series via a connecting wire G4. This means that the main bodies 311 of these conductor components 310 are connected in series using the connecting wire G4 to form a complete coil winding structure 30. When these main bodies 311 are connected in series, there will be two main bodies 311 located at either end of the series. Lead wires G5 are provided on these two main bodies 311 located at the end to connect to the drive and control circuits, thereby supplying power to the winding structure 30 to generate a magnetic field. The use of the connecting wire G4 to connect the main bodies 311 in series facilitates connection and installation of the main bodies 311. Even after the main bodies 311 are installed, they can be connected via the connecting wire G4 to form a coil winding, eliminating the need to wind the conductor components 310 into coils and then install them on the stator core 21, thereby facilitating the manufacture of the winding structure 30.

[0149] In the technical solution of the embodiment of the present application, a plurality of conductor components 310 are provided, and the conductor components 310 are arranged in a ring-shaped body 300 to facilitate the position layout of each conductor component 310; the main body 311 of the conductor component 310 is arranged radially, and the main bodies 311 of at least some of the multiple conductor components 310 are connected in series through a connecting line G4, and lead wires G5 are provided at both ends of the multiple main bodies 311 formed in series. This not only facilitates the position setting of the main body 311 of the conductor component 310, but also facilitates the setting of connecting the conductor component 310 and the lead wire G5 in series. There is no need for a complicated winding process, the structure is simplified, and it is convenient for assembly and preparation.

[0150] In some embodiments, the cross-sectional shape of the conductor component 310 is circular, elliptical, or polygonal.

[0151] The cross-section of the conductor component 310 refers to the cross-section perpendicular to the length of the conductor component 310. If the cross-section of the conductor component 310 is circular, the conductor component 310 uses a circular conductor. If the cross-section of the conductor component 310 is elliptical, the conductor component 310 uses an elliptical conductor. If the cross-section of the conductor component 310 is polygonal, the conductor component 310 uses a polygonal conductor. The polygon can be a triangle, a quadrilateral, or a polygon with more than four sides. The quadrilateral can be a parallelogram, a trapezoid, or an irregular quadrilateral. The parallelogram can be a rectangle, a square, a rhombus, or other parallelogram. The polygon with more than four sides can be a pentagon, a hexagon, etc.

[0152] The cross-sectional shape of the conductor component 310 is circular, elliptical, or polygonal, which facilitates the shape selection of the conductor component 310 and the fabrication of the winding structure 30 .

[0153] In some embodiments, the connecting line G4 includes a first connecting line G41 and a second connecting line G42, the conductor components 310 are arranged in pairs, and one end of the two main bodies 311 of each pair of conductor components 310 is connected in series through the first connecting line G41; in the two pairs of conductor components 310 in series: the other end of the main body 311 of one pair of conductor components 310 is connected to the other end of the main body 311 of the other pair of conductor components 310 through the second connecting line G42.

[0154] The first connecting wire G41 is a connecting wire that connects one end of the main body portion 311 of the paired conductor members 310 .

[0155] The second connecting line G42 is a connecting line that connects the two pairs of conductor components 310 in series. The second connecting line G42 connects the other ends of the two main bodies 311 in the middle of the two pairs of conductor components 310 in series, thereby achieving the series connection of the two pairs of conductor components 310. The other end of one main body 311 in one pair of conductor components 310 is connected to the other end of one main body 311 in the other pair of conductor components 310 via the second connecting line G42, thereby achieving the series connection of the two pairs of conductor components 310. When the two pairs of conductor components 310 are connected in series, the other ends of the two main bodies 311 in the middle are connected in series via the second connecting line G42.

[0156] The first connecting line G41 and the second connecting line G42 are provided to facilitate the series connection of the conductor components 310, especially the two pairs of conductor components 310 are connected using the first connecting line G41, which makes the connection more convenient. The other end of the main body 311 of one pair of conductor components 310 is connected to the other end of the main body 311 of the other pair of conductor components 310 through the second connecting line G42 to connect the two pairs of conductor components 310 in series, so that the other ends of the two main bodies 311 in the middle of the two pairs of conductor components 310 in series are connected using the second connecting line G42. The shape of the second connecting line G42 can also be made first and then connected, which is also convenient for assembly and further facilitates the production of the winding structure 30.

[0157] In some embodiments, the connecting wire G4 includes a first connecting wire G41 and a second connecting wire G42. The conductor components 310 are arranged in pairs. One end of the main body 311 of the conductor component 310, particularly the radially inner end, can be connected to the radially inner end of the main body 311 of the conductor component 310 on one side of the series connection via the first connecting wire G41. The other end of the main body 311 of the conductor component 310, particularly the radially outer end, can be connected to the radially outer end of the main body 311 of the conductor component 310 on the other side of the series connection via the second connecting wire G42. In this structure, the first connecting wire G41 is arranged radially inward of the manufactured winding structure 30, while the second connecting wire G42 is located radially outward of the manufactured winding structure 30.

[0158] In some embodiments, the connecting wire G4 includes a first connecting wire G41 and a second connecting wire G42. The conductor components 310 are arranged in pairs. Then, one end of the main body 311 of the conductor component 310, particularly the radially outer end, can be connected to the radially outer end of the main body 311 of the conductor component 310 on one side of the series connection via the first connecting wire G41; the other end of the main body 311 of the conductor component 310, particularly the radially inner end, can be connected to the radially inner end of the main body 311 of the conductor component 310 on the other side of the series connection via the second connecting wire G42. In this structure, the first connecting wire G41 is arranged radially outside the manufactured winding structure 30, while the second connecting wire G42 is located radially inside the manufactured winding structure 30.

[0159] In some embodiments, the two conductor components 310 are configured as a pair of conductor components 310, and the two conductor components 310 in the pair of conductor components 310 are connected by a first connecting wire G41 to form a winding coil of one phase.

[0160] In some embodiments, the span of the first connection line G41 is an entire distance.

[0161] The span of the first connecting wire G41 is set to be a full pitch, which is convenient for batch molding and manufacturing to reduce costs, and is also convenient for connecting paired conductor components 310.

[0162] In some embodiments, the annular body 300 is stacked with N layers of main bodies 311 along the axial direction, and the two main bodies 311 of each pair of conductor components 310 are respectively located in the Mth layer and the M-1th layer; N is an even number, M is an even number, and N≥M.

[0163] The annular body 300 is stacked with N layers of main bodies 311 along the axial direction. This means that at each position corresponding to each main body 311, N layers of main bodies 311 are stacked along the axial direction of the winding structure 30. When the winding structure 30 is mounted on the stator core 21, N layers of main bodies 311 are stacked in each stator slot 211 along the axial direction of the stator 20.

[0164] The two main bodies 311 of the paired conductor components 310 are respectively arranged on the Mth layer and the M-1th layer, so that the installation positions of the paired conductor components 310 can be clearly defined, which facilitates the installation and fixation of the main bodies 311 of the paired conductor components 310 .

[0165] The position of each main body portion 311 is set to an even-numbered layer of main body portions 311 to increase the magnetic force of the winding structure 30 when it is working; and the main body portion 311 of each pair of conductor components 310 is set at the Mth layer and the M-1th layer, which can facilitate the assembly of each pair of conductor components 310 in the entire winding structure 30.

[0166] In some embodiments, along the axial direction of the annular body 300: the lead wire G5 connected to the two ends of the winding formed by the series-connected main body 311 is located in the same layer, the main body 311 connected to the lead wire G5 is in the first layer, the second connecting wire G42 in the first layer is the first layer connecting wire G421, and the span of the first layer connecting wire G421 is long or short; the layer away from the first layer is the last layer, the second connecting wire G42 in the last layer is the last layer connecting wire G422, and the span of the last layer connecting wire G422 is a whole distance; the second connecting wire G42 connecting the H-th layer main body 311 and the H+1-th layer main body 311 is a cross-layer connecting wire G423, and the span of the cross-layer connecting wire G423 is long or whole or short, H is an even number and N≥H.

[0167] The axial direction of the annular body 300 is also the axial direction of the winding structure 30 . When the winding structure 30 is applied in the stator 20 , the axial direction of the winding structure 30 is also the axial direction of the stator 20 .

[0168] Since N layers of main body parts 311 are stacked at the corresponding position of the main body part 311, and the main body parts 311 in the same phase winding are connected in series, the main body parts 311 at both ends of the same phase winding are arranged in the same axial layer of the annular body 300, which not only facilitates layout design, but also facilitates the connection of the lead wire G5.

[0169] The layer where the main body 311 connected to the lead wire G5 is located can be defined as the first layer, and the layer farthest from the first layer along the axial direction of the winding structure 30 is the last layer. For example, when the winding structure 30 is installed on the stator core 21 and the main body 311 is stacked in the corresponding stator slot 211 of the stator core 21, if the first layer is located at the bottom of the stator slot 211, the last layer is located at the mouth of the stator slot 211; and if the first layer is located at the mouth of the stator slot 211, the last layer is located at the bottom of the stator slot 211.

[0170] Since the two main bodies 311 of the paired conductor components 310 are located on the Mth layer and the M-1th layer, respectively, the connecting line G4 on the first layer and the connecting line G4 on the last layer are both second connecting lines G42. The second connecting line G42 on the first layer is defined as a first-layer connecting line G421, and the second connecting line G42 on the last layer is defined as a last-layer connecting line G422. Since the main body 311 is stacked with an even number of layers, and the main body 311 forming a phase winding is connected in series and arranged in a ring shape, then except for the first layer connecting line G421 and the last layer connecting line G422, most of the second connecting lines G42 connect the T-th layer main body 311 and the T-1-th layer main body 311, T is an even number, and this part of the second connecting lines G42 is defined as inter-layer connecting lines G424, and the span of the inter-layer connecting lines G424 is an entire distance; there is also a part of the second connecting lines G42 that needs to connect the H-th layer main body 311 and the H+1-th layer main body 311, and these second connecting lines G42 are defined as cross-layer connecting lines G423.

[0171] Placing the lead-out wire G5 on the first layer facilitates the connection and lead-out of the lead-out wire G5 for easy use; setting the span of the first-layer connecting wire G421 to a long distance or a short distance makes the setting of the first-layer connecting wire G421 more flexible, thereby facilitating the setting of the conductor component 310 for making the winding structure 30; setting the span of the last-layer connecting wire G422 to a full distance facilitates the shaping and connection of the last-layer connecting wire G422. Setting the span of the cross-layer connecting wire G423 to a full distance, a long distance, or a short distance makes the setting of the cross-layer connecting wire G423 more flexible, thereby facilitating the setting of the conductor component 310 for making the winding structure 30. Since most of the second connecting wires G42 are interlayer connecting wires G424, setting the span of the interlayer connecting wires G424 to a full distance facilitates the shaping, manufacturing, and connection of the main body 311 and the interlayer connecting wires G424.

[0172] Setting the span of the first-layer connecting wire G421 to a short distance can effectively reduce the harmonics of the winding structure 30 and suppress the rotor eddy current loss. Setting the span of the cross-layer connecting wire G423 to a short distance can also effectively reduce the harmonics of the winding structure 30 and suppress the rotor eddy current loss.

[0173] In some embodiments, the winding structure 30 forms P pairs of magnetic poles, the number of main bodies 311 connected in series is A, and the first main body 311 and the Ath main body 311 are respectively connected to the lead wire G5; in the second connecting line G42 connecting the 2KPth main body 311 and the 2KP+1th main body 311: the second connecting line G42 connecting the 2KNPth main body 311 and the 2KNP+1th main body 311 is the first layer connecting line G421, the second connecting line G42 connecting the (2K-1)NPth main body 311 and the (2K-1)NP+1th main body 311 is the last layer connecting line G422, and the remaining second connecting lines G42 are cross-layer connecting lines G423, A is a positive integer, P is a positive integer, K is a positive integer, and 2KNP <A。

[0174] The number of main bodies 311 connected in series is A, meaning that the number of main bodies 311 forming a single phase winding is A, and these main bodies 311 are arranged in series. The conductor components 310 are then arranged in A / 2 pairs. These main bodies 311 are numbered 1, 2, 3, ...A in the order in which they are connected in series. The first main body 311 and the Ath main body 311 are each connected to a lead wire G5. The 2KNPth main body 311 is connected to the 2KNP+1th main body 311 via a first-layer connecting wire G421. The (2K-1)NPth main body 311 is connected to the (2K-1)NP+1th main body 311 via a last-layer connecting wire G422. The remainder of the second connecting wire G42 between the 2KPth main body 311 and the 2KP+1th main body 311 is a cross-layer connecting wire G423. This structure can determine the positions of the first-layer connection line G421, the last-layer connection line G422, and the cross-layer connection line G423, as well as the numbers of the connected main body parts 311, so as to facilitate pre-processing and assembly connection.

[0175] In some embodiments, the conductor component 310 also includes an inner segment 312 and an outer segment 313, the inner segment 312 is connected to the radial inner end of the main body 311, and the outer segment 313 is connected to the radial outer end of the main body 311, and the two inner segments 312 of each pair of conductor components 310 are connected to form a first connecting line G41; in the two pairs of conductor components 310 connected in series, the outer segment 313 of the main body 311 of one pair of conductor components 310 is connected to the outer segment 313 of the main body 311 of the other pair of conductor components 310 to form a second connecting line G42.

[0176] The inner section 312 is a section of the conductor component 310 that is connected to the radially inner side of the main body 311. The outer section 313 is a section of the conductor component 310 that is connected to the radially outer side of the main body 311. The main body 311 extends radially along the annular body 300. The radial direction of the annular body 300 coincides with the radial direction of the winding structure 30. When the winding structure 30 is used in the stator 20, the radial direction of the winding structure 30 is aligned with the radial side of the stator 20.

[0177] The radially inner side refers to the side along the radial direction of the stator 20 and closer to the center of the stator 20; it also refers to the side along the radial direction of the winding structure 30 and closer to the center of the annular winding structure 30. The radially outer side is the side opposite to the radially inner side, that is, the side along the radial direction of the winding structure 30 and farther from the center of the annular winding structure 30.

[0178] The conductor components 310 are provided with inner segments 312 and outer segments 313. The two inner segments 312 of each pair of conductor components 310 are connected to form a first connecting line G41. That is, the two inner segments 312 of two conductor components 310 connected in series are connected to form the first connecting line G41, so as to facilitate the provision of the first connecting line G41 and the series connection of the pair of conductor components 310. It is understandable that a separate first connecting line G41 can also be provided to connect the main bodies 311 of the two pairs of conductor components 310.

[0179] The two outer segments 313 in the middle of the two pairs of conductor components 310 to be connected in series are connected to form a second connecting line G42. That is, the two outer segments 313 are connected to form the second connecting line G42, so that the two pairs of conductor components 310 are connected in series. This also facilitates the arrangement of the second connecting line G42. In other words, the two outer segments 313 of the two conductor components 310 in series are connected to form the second connecting line G42. It is understood that a separate second connecting line G42 can also be provided to connect the two main bodies 311 in the middle of the two pairs of conductor components 310 in series.

[0180] In addition, this structure arranges the first connecting wire G41 on the radial inner side of the main body 311 and the second connecting wire G42 on the radial outer side of the main body 311, which can also reduce the occupied space and the volume of the winding structure 30.

[0181] In some embodiments, the conductor component 310 is made of a flat wire in one piece.

[0182] The conductor component 310 is made of flat wire in one piece, that is, the inner section 312, the main body 311 and the outer section 313 are formed in one piece using flat wire, which can facilitate the processing and production of the conductor component 310 to maintain the uniformity of the resistivity of the conductor component 310 along the length, reduce the impedance of the conductor component 310, and improve the conductive performance of the conductor component 310.

[0183] In some embodiments, each pair of conductor components 310 is manufactured by integrally forming a flat wire.

[0184] As shown in Figure 8 , each pair of conductor components 310 is integrally formed using flat wire. That is, a single flat wire is used to preform both conductor components 310, and the inner sections 312 of the two conductor components 310 are integrally formed, facilitating both processing and assembly of the conductor components 310 to form the winding structure 30. Furthermore, this structure ensures a consistent preformed structure for the first connecting wires G41, allowing for a neat and tight arrangement within the inner circumference of the annular winding structure 30. This effectively reduces the height of the radially inner end of the winding structure 30, improving manufacturability.

[0185] In some embodiments, in the two pairs of conductor components 310 connected in series, the two outer segments 313 in the middle are welded together.

[0186] The two outer segments 313 in the middle of the two pairs of conductor components 310 that need to be connected in series are welded together. In other words, the two outer segments 313 that form the second connecting wire G42 are welded together to improve the connection strength, ensure good electrical conductivity between the two outer segments 313, reduce the impedance between the two outer segments 313, and facilitate connection. It is understood that the two outer segments 313 in the middle of the two pairs of conductor components 310 that need to be connected in series can also be fixedly connected using other methods, such as connection through terminal blocks, binding, etc. In addition, the shape of each outer segment 313 can be prefabricated in this structure, and the main body 311 is stacked in the axial direction. Accordingly, the outer segments 313 can be formed in a stacked winding form at the periphery of the winding structure 30, that is, the two outer segments 313 that need to be welded together can be stacked in the axial direction. In this way, there will be no nesting of long-distance and short-distance connecting wires G4, so that the spacing between the two pairs of outer segments 313 that need to be welded together is consistent, thereby improving welding quality and manufacturability. Alternatively, the two connected outer segments 313 can also be butt-connected in the circumferential direction.

[0187] In some embodiments, the winding structure 30 forms P pairs of magnetic poles, where P is a positive integer.

[0188] The number of magnetic pairs formed by the winding structure 30 is set to a positive integer, and the number of magnetic pairs can be set as needed to facilitate the design and application scope of the winding structure 30.

[0189] In some embodiments, the annular body 300 is stacked with N layers of main bodies 311 along the axial direction. The number of main bodies 311 located in the same axial layer of the annular body 300 and in the same magnetic pole is q, where N is an even number and q is a positive integer.

[0190] When the above structure is applied to the stator 20, the number of slots per pole per phase of the stator 20 can be q, so as to facilitate the design and production of the winding structure 30; q is a positive integer, and the number of slots per pole per phase is set as needed to improve the applicability of the design of the winding structure 30.

[0191] In some embodiments, when q≥2, the q main bodies 311 located in the same axial layer of the annular body 300 and in the same magnetic pole are arranged adjacent to each other.

[0192] The q main bodies 311 located in the same axial layer of the annular body 300 and in the same magnetic pole mean that the q main bodies 311 are located in the same axial layer of the annular body 300 and in the same magnetic pole.

[0193] By arranging the q main bodies 311 in the same layer and in the same magnetic pole adjacent to each other, the generated magnetic field can be more concentrated, thereby increasing the intensity of the generated magnetic field.

[0194] In some embodiments, the winding structure 30 includes a single-phase winding, which is made by using a plurality of conductor components 310 connected in series.

[0195] The winding structure 30 includes a single-phase winding, has a simple structure, and can be applied to a single-phase stator 20 .

[0196] In some embodiments, the winding structure 30 includes a multi-phase winding, which is made of multiple conductor components 310 connected in series. The structure of each phase winding is the same, and the multi-phase winding is evenly distributed along the circumference of the winding structure 30.

[0197] When the winding structure 30 includes multi-phase windings, the multi-phase winding structures 30 are configured to be identical to simplify the structure of each phase winding, facilitate processing and manufacturing, and facilitate application to the multi-phase stator 20 .

[0198] Please refer to FIGS. 9 to 11 again, and also refer to FIGS. 6 and 8. The label S1 row represents the magnetic poles, and there are 8 magnetic poles, each magnetic pole including 6 stator slots 211. The label S2 row represents the numbers of the stator slots 211. There are 48 stator slots 211, numbered from J1, J2 to J48. The label S3 column represents the phases of the windings. FIG. 9 is the U-phase winding, FIG. 10 is the V-phase winding, and FIG. 11 is the W-phase winding. The phases of the three-phase windings of U, V, and W differ by 120 degrees. The label S4 column represents the numbers of the number N of the layers of the main body part 311. There are 4 layers in the main body part 311, that is, N = 4, numbered from T1 to T4. The T1 layer is the first layer, and the T4 layer is the last layer. The label S5 indicates the connection sequence numbers of the respective main body parts 311 connected in series in each phase winding, and it indicates the positions of the respective layers of the main body parts 311 in each stator slot 211. Among them, the total number A of the main body parts 311 is 64, from 1 to 64. The first main body part 311 and the 64th main body part 311 are connected to lead out wire G5. The conductor components 310 are A / 2 pairs, that is, 32 pairs are provided. Then, the E-th main body part 311 is connected to the (E - 1)-th main body part 311 through the first connection wire G41, E is an even number, and the E-th main body part 311 and the (E - 1)-th main body part 311 are respectively located in the M-th layer and the (M - 1)-th layer, M is an even number, M ≤ N, E ≤ A. When the B-th main body part 311 and the (B + 1)-th main body part 311 are respectively located in the T-th layer and the (T - 1)-th layer, B is an even number, then the B-th main body part 311 and the (B + 1)-th main body part 311 are connected by the interlayer connection wire G424, B < A, T is an even number, T ≤ N. The 2KNP-th main body part 311 and the (2KNP + 1)-th main body part 311 are connected by the first layer connection wire G421. For example, the 32nd main body part 311 and the 33rd main body part 311 are connected by the first layer connection wire G421. The ((2K - 1)NP)-th main body part 311 and the ((2K - 1)NP + 1)-th main body part 311 are connected by the last layer connection wire G422. For example, the 16th main body part 311 and the 17th main body part 311 are connected by the last layer connection wire G422, and the 48th main body part 311 and the 49th main body part 311 are connected by the last layer connection wire G422. When the 2KP-th main body part 311 and the (2KP + 1)-th main body part 311 are respectively located in the H-th layer and the (H + 1)-th layer, H is an even number and N ≥ H, the 2KP-th main body part 311 and the (2KP + 1)-th main body part 311 are connected by the cross-layer connection wire G423. For example, the 8th main body part 311 and the 9th main body part 311 are connected by the cross-layer connection wire G423, the 24th main body part 311 and the 25th main body part 311 are connected by the cross-layer connection wire G423, the 40th main body part 311 and the 41st main body part 311 are connected by the cross-layer connection wire G423, and the 56th main body part 311 and the 57th main body part 311 are connected by the cross-layer connection wire G423. P is the number of pole pairs; P is a positive integer, K is a positive integer, and 2KNP < A.As can be seen from FIG9 , the number of slots per pole and per phase is q=2.

[0199] The U-phase winding, the V-phase winding, and the W-phase winding are identical in connection structure, except that the stator slots 211 are shifted backward by two numbers during winding.

[0200] In the embodiments of Figures 9 to 11, the span of the first connecting wire G41 is a full span, the span of the first-layer connecting wire G421 is a short span, the span of the last-layer connecting wire G422 is a full span, the span of the cross-layer connecting wire G423 is a full span, and the span of the inter-layer connecting wire G424 is a full span. This structure allows the first connecting wires G41 preformed on the radially inner side of the winding structure 30 to have the same span and a consistent number of cross-layers, allowing the radial inner side of the winding structure 30 to be arranged neatly and tightly. The radial outer side of the winding structure 30 is preferably formed into a stacked winding form to facilitate improved consistency in the spacing between weld points, improving welding quality and manufacturability.

[0201] In one embodiment, please refer to FIG. 12, and also refer to FIGS. 6 and 8. The label S1 row represents the magnetic poles, where there are 8 magnetic poles, and each magnetic pole includes 6 stator slots 211. The label S2 row represents the numbers of the stator slots 211. There are 48 stator slots 211, numbered from J1, J2 to J48. The label S3 column represents the phase of the winding, and FIG. 12 shows the U-phase winding. The label S4 column represents the numbers of the layers N of the main body portion 311. There are 4 layers in the main body portion 311, that is, N = 4, numbered from T1 to T4, with T1 being the first layer and T4 being the last layer. The label S5 indicates the connection sequence numbers of the respective main body portions 311 connected in series in each phase winding, which indicates the positions of the respective main body portions 311 located in each stator slot 211. Among them, the total number A of the main body portions 311 is 64, from 1 to 64. The first main body portion 311 and the 64th main body portion 311 are connected to lead out wire G5. The conductor components 310 are A / 2 pairs, that is, 32 pairs are provided. Then, the E-th main body portion 311 is connected to the (E - 1)-th main body portion 311 through the first connection wire G41, where E is an even number, and the E-th main body portion 311 and the (E - 1)-th main body portion 311 are respectively located in the M-th layer and the (M - 1)-th layer, M is an even number, M ≤ N, and E ≤ A. When the B-th main body portion 311 and the (B + 1)-th main body portion 311 are respectively located in the T-th layer and the (T - 1)-th layer, B is an even number, then the B-th main body portion 311 and the (B + 1)-th main body portion 311 are connected to each other through the interlayer connection wire G424, B < A, T is an even number, and T ≤ N. The 2KNP-th main body portion 311 and the (2KNP + 1)-th main body portion 311 are connected through the first layer connection wire G421. For example, the 32nd main body portion 311 and the 33rd main body portion 311 are connected through the first layer connection wire G421. The ((2K - 1)NP)-th main body portion 311 and the ((2K - 1)NP + 1)-th main body portion 311 are connected through the last layer connection wire G422. For example, the 16th main body portion 311 and the 17th main body portion 311 are connected through the last layer connection wire G422, and the 48th main body portion 311 and the 49th main body portion 311 are connected through the last layer connection wire G422. When the 2KP-th main body portion 311 and the (2KP + 1)-th main body portion 311 are respectively located in the H-th layer and the (H + 1)-th layer, H is an even number and N ≥ H, the 2KP-th main body portion 311 and the (2KP + 1)-th main body portion 311 are connected through the cross-layer connection wire G423. For example, the 8th main body portion 311 and the 9th main body portion 311 are connected through the cross-layer connection wire G423, the 24th main body portion 311 and the 25th main body portion 311 are connected through the cross-layer connection wire G423, the 40th main body portion 311 and the 41st main body portion 311 are connected through the cross-layer connection wire G423, and the 56th main body portion 311 and the 57th main body portion 311 are connected through the cross-layer connection wire G423. P is the number of pole pairs; P is a positive integer, K is a positive integer, and 2KNP < A. As can be seen from FIG. 12, the number of slots per pole per phase q = 2.

[0202] In Figure 12, the span of the first connecting wire G41 is a full distance, the span of the first layer connecting wire G421 is a long distance, the span of the last layer connecting wire G422 is a full distance, the span of the cross-layer connecting wire G423 is a full distance, and the span of the inter-layer connecting wire G424 is a full distance. This structure can make the first connecting wire G41 preformed on the radial inner side of the winding structure 30 have the same span and number of cross-layers, so that the radial inner side of the winding structure 30 can be arranged neatly and tightly. The radial outer side of the winding structure 30 forms a stacked winding form, which is convenient for improving the consistency of the spacing between the welds, improving the welding quality and manufacturability. In Figure 12, the span of the first layer connecting wire G421 is set to a long distance to facilitate the flexible layout of the position of the lead wire G5.

[0203] In another embodiment, refer to FIG. 13, and also refer to FIGS. 6 and 8. The label S1 row represents the magnetic poles, where there are 8 magnetic poles, and each magnetic pole includes 6 stator slots 211. The label S2 row represents the numbers of the stator slots 211. There are 48 stator slots 211, numbered from J1, J2 to J48. The label S3 column represents the phase of the winding, and FIG. 13 shows the U-phase winding. The label S4 column represents the numbers of the number of layers N of the main body portion 311. The main body portion 311 has 4 layers, i.e., N = 4, numbered from T1 to T4, with T1 layer being the first layer and T4 layer being the last layer. The label S5 indicates the connection sequence number of each main body portion 311 connected in series in each phase winding, which indicates the positions of the main body portions 311 in each layer located in each stator slot 211. Among them, the total number A of the main body portions 311 is 64, from 1 to 64. The first main body portion 311 and the 64th main body portion 311 are connected to lead-out wire G5. The conductor components 310 are A / 2 pairs, that is, 32 pairs are provided. Then, the E-th main body portion 311 is connected to the (E - 1)-th main body portion 311 through the first connection wire G41, E is an even number, and the E-th main body portion 311 and the (E - 1)-th main body portion 311 are respectively located in the M-th layer and the (M - 1)-th layer, M is an even number, M ≤ N, E ≤ A. When the B-th main body portion 311 and the (B + 1)-th main body portion 311 are respectively located in the T-th layer and the (T - 1)-th layer, B is an even number, then the B-th main body portion 311 and the (B + 1)-th main body portion 311 are connected through the inter-layer connection wire G424, B < A, T is an even number, T ≤ N. The 2KNP-th main body portion 311 and the (2KNP + 1)-th main body portion 311 are connected through the first layer connection wire G421. For example, the 32nd main body portion 311 and the 33rd main body portion 311 are connected through the first layer connection wire G421. The ((2K - 1)NP)-th main body portion 311 and the ((2K - 1)NP + 1)-th main body portion 311 are connected through the last layer connection wire G422. For example, the 16th main body portion 311 and the 17th main body portion 311 are connected through the last layer connection wire G422, and the 48th main body portion 311 and the 49th main body portion 311 are connected through the last layer connection wire G422. When the 2KP-th main body portion 311 and the (2KP + 1)-th main body portion 311 are respectively located in the H-th layer and the (H + 1)-th layer, H is an even number and N ≥ H, the 2KP-th main body portion 311 and the (2KP + 1)-th main body portion 311 are connected through the cross-layer connection wire G423. For example, the 8th main body portion 311 and the 9th main body portion 311 are connected through the cross-layer connection wire G423, the 24th main body portion 311 and the 第25个主体部311通过跨层连接线G423相连,第40个主体部311与第41个主体部311通过跨层连接线G423相连,第56个主体部311与第57个主体部311通过跨层连接线G423相连。P is the number of pole pairs; P is a positive integer, K is a positive integer, and 2KNP < A. As can be seen from FIG. 13, the number of slots per pole per phase q = 2.

[0204] It should be noted that there seems to be an incomplete expression in the original text where it says "第24个主体部311与第25个主体部311通过跨层连接线G423相连,第40个主体部311与第41个主体部311通过跨层连接线G423相连,第56个主体部311与第57个主体部311通过跨层连接线G423相连。" in the middle of the translation. It is recommended to check and correct the original text for a more accurate translation.In Figure 13, the span of the first connecting wire G41 is a full distance, the span of the first layer connecting wire G421 is a short distance, the span of the last layer connecting wire G422 is a full distance, the span of the cross-layer connecting wire G423 is a short distance, and the span of the inter-layer connecting wire G424 is a full distance. This structure can make the first connecting wire G41 preformed on the radial inner side of the winding structure 30 have the same span and number of layers, so that the radial inner side of the winding structure 30 can be arranged neatly and tightly. The radial outer side of the winding structure 30 forms a stacked winding form, which is convenient for improving the consistency of the spacing between the welds, improving the welding quality and manufacturability. In Figure 13, the span of the cross-layer connecting wire G423 is a short distance, forming a short-distance winding, which can further reduce harmonics and help suppress rotor eddy current losses.

[0205] In another embodiment, please refer to FIG. 14, and also refer to FIGS. 6 and 8. The label S1 row represents the magnetic poles, where there are 8 magnetic poles, and each magnetic pole includes 6 stator slots 211. The label S2 row represents the numbers of the stator slots 211. There are 48 stator slots 211, numbered from J1, J2 to J48. The label S3 column represents the phase of the winding. FIG. 14 shows the U-phase winding. The label S4 column represents the numbers of the number of layers N of the main body portion 311. The main body portion 311 has 4 layers, that is, N = 4, numbered from T1 to T4, with T1 layer being the first layer and T4 layer being the last layer. The label S5 indicates the connection sequence number of each main body portion 311 connected in series in each phase winding, which indicates the positions of the main body portions 311 of each layer located in each stator slot 211. Among them, the total number A of the main body portions 311 is 64, from 1 to 64. The first main body portion 311 and the 64th main body portion 311 are connected to lead-out wire G5. The conductor components 310 are A / 2 pairs, that is, 32 pairs are provided. Then, the E-th main body portion 311 is connected to the (E - 1)-th main body portion 311 through the first connection wire G41, where E is an even number, and the E-th main body portion 311 and the (E - 1)-th main body portion 311 are respectively located on the M-th layer and the (M - 1)-th layer, M is an even number, M ≤ N, and E ≤ A. When the B-th main body portion 311 and the (B + 1)-th main body portion 311 are respectively located on the T-th layer and the (T - 1)-th layer, B is an even number, then the B-th main body portion 311 and the (B + 1)-th main body portion are connected by an interlayer connection wire G424, B < A, T is an even number, and T ≤ N. The 2KNP-th main body portion 311 and the (2KNP + 1)-th main body portion 311 are connected by a first-layer connection wire G421. For example, the 32nd main body portion 311 and the 33rd main body portion 311 are connected by a first-layer connection wire G421. The ((2K - 1)NP)-th main body portion 311 and the ((2K - 1)NP + 1)-th main body portion 311 are connected by a last-layer connection wire G422. For example, the 16th main body portion 311 and the 17th main body portion 311 are connected by a last-layer connection wire G422, and the 48th main body portion 311 and the 49th main body portion are connected by a last-layer connection wire G422. When the 2KP-th main body portion 311 and the (2KP + 1)-th main body portion 311 are respectively located on the H-th layer and the (H + 1)-th layer, H is an even number and N ≥ H, the 2KP-th main body portion 311 and the (2KP + 1)-th main body portion 311 are connected by an inter-layer connection wire G423. For example, the 8th main body portion 311 and the 9th main body portion 311 are connected by an inter-layer connection wire G423, the 24th main body portion 311 and the 25th main body portion 311 are connected by an inter-layer connection wire G423, the 40th main body portion 311 and the 41st main body portion 311 are connected by an inter-layer connection wire G423, and the 56th main body portion 311 and the 57th main body portion 311 are connected by an inter-layer connection wire G423. P is the number of pole pairs; P is a positive integer, K is a positive integer, and 2KNP < A. As can be seen from FIG. 14, the number of slots per pole per phase q = 2.

[0206] In Figure 14, the span of the first connecting wire G41 is a full distance, the span of the first layer connecting wire G421 is a short distance, the span of the last layer connecting wire G422 is a full distance, the span of the cross-layer connecting wire G423 is a long distance, and the span of the inter-layer connecting wire G424 is a full distance. This structure can make the first connecting wire G41 preformed on the radial inner side of the winding structure 30 have the same span and number of layers, so that the radial inner side of the winding structure 30 can be arranged neatly and tightly. The radial outer side of the winding structure 30 forms a stacked winding form, which is convenient for improving the consistency of the spacing between the welds, improving the welding quality and manufacturability. In Figure 14, the span of the cross-layer connecting wire G423 is a long distance, so that the position of the main part 311 of the conductor component 310 of the winding structure 30 can be flexibly arranged and connected.

[0207] In another embodiment, refer to FIG. 15, and also refer to FIGS. 6 and 8. Here, the label S1 row represents the magnetic poles, where there are 8 magnetic poles, and each magnetic pole includes 6 stator slots 211. The label S2 row represents the numbers of the stator slots 211. There are 48 stator slots 211, numbered from J1, J2 to J48. The label S3 column represents the phase of the winding, and FIG. 15 shows the U-phase winding. The label S4 column represents the numbers of the layers N of the main body part 311. There are 4 layers in the main body part 311, that is, N = 4, numbered from T4 to T1, with T4 being the first layer and T1 being the last layer. The label S5 indicates the connection sequence number of each main body part 311 connected in series in each phase winding, which indicates the positions of the main body parts 311 in each stator slot 211. Among them, the total number A of the main body parts 311 is 64, from 1 to 64. The first main body part 311 and the 64th main body part 311 are connected to lead out wire G5. The conductor components 310 are A / 2 pairs, that is, 32 pairs are provided. Then, the E-th main body part 311 is connected to the (E - 1)-th main body part 311 through the first connection wire G41, where E is an even number, and the E-th main body part 311 and the (E - 1)-th main body part 311 are respectively located in the M-th layer and the (M - 1)-th layer, where M is an even number, M ≤ N, and E ≤ A. When the B-th main body part 311 and the (B + 1)-th main body part 311 are respectively located in the T-th layer and the (T - 1)-th layer, where B is an even number, then the B-th main body part 311 and the (B + 1)-th main body part 311 are connected by the interlayer connection wire G424, where B < A, T is an even number, and T ≤ N. The 2KNP-th main body part 311 and the (2KNP + 1)-th main body part 311 are connected by the first-layer connection wire G421. For example, the 32nd main body part 311 and the 33rd main body part 311 are connected by the first-layer connection wire G421. The ((2K - 1)NP)-th main body part 311 and the ((2K - 1)NP + 1)-th main body part 311 are connected by the last-layer connection wire G422. For example, the 16th main body part 311 and the 17th main body part 311 are connected by the last-layer connection wire G422, and the 48th main body part 311 and the 49th main body part 311 are connected by the last-layer connection wire G422. When the 2KP-th main body part 311 and the (2KP + !)-th main body part 311 are respectively located in the H-th layer and the (H + 1)-th layer, where H is an even number and N ≥ H, the 2KP-th main body part 311 and the (2KP + 1)-th main body part 311 are connected by the cross-layer connection wire G423. For example, the ⑧th main body part 311 and the 9th main body part 311 are connected by the cross-layer connection wire G423, the 24th main body part 311 and the 25th main body part 311 are connected by the cross-layer connection wire G423, the 40th main body part 311 and the 41st main body part 311 are connected by the cross-layer connection wire G423, and the 56th main body part 311 and the 57th main body part 311 are connected by the cross-layer connection wire G423. P is the number of pole pairs; P is a positive integer, K is a positive integer, and 2KNP < A. As can be seen from FIG. 15, the number of slots per pole per phase q = 2.

[0208] In Figure 15, the span of the first connecting wire G41 is a full distance, the span of the first layer connecting wire G421 is a short distance, the span of the last layer connecting wire G422 is a full distance, the span of the cross-layer connecting wire G423 is a full distance, and the span of the inter-layer connecting wire G424 is a full distance. This structure can make the first connecting wire G41 preformed on the radial inner side of the winding structure 30 have the same span and number of cross-layers, so that the radial inner side of the winding structure 30 can be arranged neatly and tightly. The radial outer side of the winding structure 30 forms a stacked winding form, which is convenient for improving the consistency of the spacing between the solder joints, improving the welding quality and manufacturability. In Figure 15, the first layer is set at the T4 layer, and the T1 layer is used as the last layer, so that the position of the main body 311 of the conductor component 310 can be flexibly arranged and connected, and it is also convenient for the setting and lead-out of the lead-out wire G5.

[0209] In another embodiment, please refer to FIG. 16, and also refer to FIGS. 6 and 8. The label S1 row represents the magnetic poles, and there are 8 magnetic poles, each magnetic pole including 6 stator slots 211. The label S2 row represents the numbers of the stator slots 211. There are 48 stator slots 211, numbered from J1, J2 to J48. The label S3 column represents the phases of the windings, and FIG. 16 shows the U-phase winding. The label S4 column represents the numbers of the layer numbers N of the main body 311. There are 6 layers of the main body 311, that is, N = 6, numbered from T1 to T6, with T1 layer being the first layer and T6 layer being the last layer. The label S5 indicates the connection sequence numbers of the respective main bodies 311 connected in series in each phase winding, which indicates the positions of the respective layers of the main body 311 located in each stator slot 211. Among them, the total number A of the main bodies 311 is 96, from 1 to 96. The first main body 311 and the 96th main body 311 are connected to lead out wire G5. The conductor components 310 are A / 2 pairs, that is, arranged in 48 pairs. Then, the E-th main body 311 is connected to the (E - 1)-th main body 311 through the first connection line G41, where E is an even number, and the E-th main body 311 and the (E - 1)-th main body 311 are respectively located in the M-th layer and the (M - 1)-th layer, M is an even number, M ≤ N, and E ≤ A. When the B-th main body 311 and the (B + 1)-th main body 311 are respectively located in the T-th layer and the (T - 1)-th layer, B is an even number, then the B-th main body 311 and the (B + 1)-th main body 311 are connected by the inter-layer connection line G424, B < A, T is an even number, and T ≤ N. The 2KNP-th main body 311 and the (2KNP + 1)-th main body 311 are connected by the first-layer connection line G421. For example, the 48th main body 311 and the 49th main body 311 are connected by the first-layer connection line G421. The ((2K - 1)NP)-th main body 311 and the ((2K - 1)NP + 1)-th main body 311 are connected by the last-layer connection line G422. For example, the 24th main body 311 and the 25th main body 311 are connected by the last-layer connection line G422, and the 72nd main body 311 and the 73rd main body 311 are connected by the last-layer connection line G422.When the 2KP-th main body part 311 and the 2KP+1-th main body part 311 are respectively located on the H-th layer and the H+1-th layer, where H is an even number and N≥H, the 2KP-th main body part 311 and the 2KP+1-th main body part 311 are connected by a cross-layer connecting line G423. For example, the 8th main body part 311 and the 9th main body part 311 are connected by a cross-layer connecting line G423, the 16th main body part 311 and the 17th main body part 311 are connected by a cross-layer connecting line G423, the 32nd main body part 311 and the 33rd main body part 311 are connected by a cross-layer connecting line G423, the 40th main body part 311 and the 41st main body part 311 are connected by a cross-layer connecting line G423, the 56th main body part 311 and the 57th main body part 311 are connected by a cross-layer connecting line G423, the 64th main body part 311 and the 65th main body part 311 are connected by a cross-layer connecting line G423, the 80th main body part 311 and the 81st main body part 311 are connected by a cross-layer connecting line G423, and the 88th main body part 311 and the 89th main body part 311 are connected by a cross-layer connecting line G423. P is the number of pole pairs; P is a positive integer, K is a positive integer, and 2KNP<A. As can be seen from Fig. 16, the number of slots per pole per phase q = 2.

[0210] In Fig. 16, the span of the first connecting line G41 is a full pitch, the span of the first-layer connecting line G421 is a short pitch, the span of the last-layer connecting line G422 is a full pitch, the span of the cross-layer connecting line G423 is a full pitch, and the span of the inter-layer connecting line G424 is a full pitch. This structure can make the first connecting line G41 preformed on the radial inner side of the winding structure 30 have the same span and number of cross-layers, so that the radial inner side of the winding structure 30 can be arranged neatly and tightly. The radial outer side of the winding structure 30 forms an overlapping winding form, which is convenient for improving the consistency of the solder joint spacing, improving the welding quality and manufacturability. In Fig. 16, the number of stacked layers of the main body part 311 is set to 6 layers to increase the number of turns of the coils in series in the winding structure 30, so as to expand the motor power and torque range.

[0211] In another embodiment, please refer to FIG. 17, and also refer to FIGS. 6 and 8. The label S1 row represents the magnetic poles, and there are 8 magnetic poles, each magnetic pole including 6 stator slots 211. The label S2 row represents the numbers of the stator slots 211. There are 48 stator slots 211, numbered from J1, J2 to J48. The label S3 column represents the phase of the winding, and FIG. 17 shows the U-phase winding. The label S4 column represents the number of the layer N of the main body portion 311. There are 6 layers in the main body portion 311, that is, N = 6, numbered from T1 to T6, with T1 being the first layer and T6 being the last layer. The label S5 indicates the connection sequence number of each main body portion 311 connected in series in each phase winding, which indicates the positions of the main body portions 311 in each layer located in each stator slot 211. Among them, the total number A of the main body portions 311 is 96, numbered from 1 to 96. The first main body portion 311 and the 96th main body portion 311 are connected to lead out wire G5. The conductor components 310 are set in A / 2 pairs, that is, 48 pairs. Then, the E-th main body portion 311 is connected to the (E - 1)-th main body portion 311 through the first connection wire G41, where E is an even number, and the E-th main body portion 311 and the (E - 1)-th main body portion 311 are respectively located in the M-th layer and the (M - 1)-th layer, M is an even number, M ≤ N, and E ≤ A. When the B-th main body portion 311 and the (B + 1)-th main body portion 311 are respectively located in the T-th layer and the (T - 1)-th layer, where B is an even number, then the B-th main body portion 311 and the (B + 1)-th main body portion 311 are connected by the interlayer connection wire G424, B < A, T is an even number, and T ≤ N. The 2KNP-th main body portion 311 and the (2KNP + 1)-th main body portion 311 are connected by the first layer connection wire G421. For example, the 48th main body portion 311 and the 49th main body portion 311 are connected by the first layer connection wire G421. The ((2K - 1)NP)-th main body portion 311 and the ((2K - 1)NP + 1)-th main body portion 311 are connected by the last layer connection wire G422. For example, the 24th main body portion 311 and the 25th main body portion 311 are connected by the last layer connection wire G422, and the 72nd main body portion 311 and the 73rd main body portion 311 are connected by the last layer connection wire G422.When the 2KP-th main body part 311 and the (2KP + 1)-th main body part 311 are respectively located on the H-th layer and the (H + 1)-th layer, where H is an even number and N ≥ H, the 2KP-th main body part 311 and the (2KP + 1)-th main body part 311 are connected by a cross-layer connecting line G423. For example, the 8th main body part 311 and the 9th main body part 311 are connected by a cross-layer connecting line G423, the 16th main body part 311 and the 17th main body part 311 are connected by a cross-layer connecting line G423, the 32nd main body part 311 and the 33rd main body part 311 are connected by a cross-layer connecting line G423, the 40th main body part 311 and the 41st main body part 311 are connected by a cross-layer connecting line G423, the 56th main body part 311 and the 57th main body part 311 are connected by a cross-layer connecting line G423, the 64th main body part 311 and the 65th main body part 311 are connected by a cross-layer connecting line G423, the 80th main body part 311 and the 81st main body part 311 are connected by a cross-layer connecting line G423, and the 88th main body part 311 and the 89th main body part 311 are connected by a cross-layer connecting line G423. P is the number of pole pairs; P is a positive integer, K is a positive integer, and 2KNP < A. As can be seen from Fig. 17, the number of slots per pole per phase q = 2.

[0212] In Fig. 17, the span of the first connecting line G41 is full pitch, the span of the first-layer connecting line G421 is short pitch, the span of the last-layer connecting line G422 is full pitch, the span of the cross-layer connecting line G423 is short pitch, and the span of the inter-layer connecting line G424 is full pitch. This structure can make the first connecting line G41 preformed on the radial inner side of the winding structure 30 have the same span and the same number of cross-layers, so that the radial inner side of the winding structure 30 can be arranged neatly and closely. The radial outer side of the winding structure 30 forms an overlapping winding form, which is convenient for improving the consistency of the solder joint spacing, improving the welding quality and manufacturability. In Fig. 17, the number of stacked layers of the main body part 311 is set to 6 layers to increase the number of turns of the coils connected in series in the winding structure 30, so as to expand the motor power and torque range. Making the span of the cross-layer connecting line G423 be short pitch to form a short-pitch winding can further reduce harmonics and is beneficial to suppressing rotor eddy current loss.

[0213] In another embodiment, please refer to FIG. 18, and also refer to FIGS. 6 and 8. The label S1 row represents the magnetic poles, where there are 6 magnetic poles, and each magnetic pole includes 6 stator slots 211. The label S2 row represents the numbers of the stator slots 211. There are 36 stator slots 211, numbered from J1, J2 to J36. The label S3 column represents the phase of the winding, and FIG. 18 shows the U-phase winding. The label S4 column represents the numbers of the layers N of the main body 311. The main body 311 has 4 layers, that is, N = 4, numbered from T1 to T4, with T1 layer being the first layer and T4 layer being the last layer. The label S5 indicates the connection sequence number of each main body 311 connected in series in each phase winding, which indicates the positions of the main bodies 311 in each stator slot 211. Among them, the total number A of the main bodies 311 is 48, numbered from 1 to 48. The first main body 311 and the 48th main body 311 are connected to lead-out wire G5. The conductor components 310 are A / 2 pairs, that is, 24 pairs are provided. Then, the E-th main body 311 is connected to the (E - 1)-th main body 311 through the first connection wire G41, where E is an even number, and the E-th main body 311 and the (E - 1)-th main body 311 are respectively located in the M-th layer and the (M - 1)-th layer, M is an even number, M ≤ N, and E ≤ A. When the B-th main body 311 and the (B + 1)-th main body 311 are respectively located in the T-th layer and the (T - 1)-th layer, where B is an even number, then the B-th main body 311 and the (B + 1)-th main body 311 are connected by the inter-layer connection wire G424, B < A, T is an even number, and T ≤ N. The 2KNP-th main body 311 and the (2KNP + 1)-th main body 311 are connected by the first-layer connection wire G421. For example, the 24th main body 311 and the 25th main body 311 are connected by the first-layer connection wire G421. The ((2K - 1)NP)-th main body 311 and the ((2K - 1)NP + 1)-th main body 311 are connected by the last-layer connection wire G422. For example, the 12th main body 311 and the 13th main body 311 are connected by the last-layer connection wire G422, and the 36th main body 311 and the 37th main body 311 are connected by the last-layer connection wire G422. When the 2KP-th main body 311 and the (2KP + 1)-th main body 311 are respectively located in the H-th layer and the (H + 1)-th layer, where H is an even number and N ≥ H, the 2KP-th main body 311 and the (2KP + 1)-th main body 311 are connected by the cross-layer connection wire G423. For example, the 6th main body 311 and the 7th main body 311 are connected by the cross-layer connection wire G423, the 18th main body 311 and the 19th main body 311 are connected by the cross-layer connection wire G423, the 30th main body 311 and the 31st main body 311 are connected by the cross-layer connection wire G423, and the 42nd main body 311 and the 43rd main body 311 are connected by the cross-layer connection wire G423. P is the number of pole pairs; P is a positive integer, K is a positive integer, and 2KNP < A. As can be seen from FIG. 18, the number of slots per pole per phase q = 2.

[0214] In Figure 18, the span of the first connecting wire G41 is a full distance, the span of the first layer connecting wire G421 is a short distance, the span of the last layer connecting wire G422 is a full distance, the span of the cross-layer connecting wire G423 is a full distance, and the span of the inter-layer connecting wire G424 is a full distance. This structure can make the first connecting wire G41 preformed on the radial inner side of the winding structure 30 have the same span and number of cross-layers, so that the radial inner side of the winding structure 30 can be arranged neatly and tightly. The radial outer side of the winding structure 30 forms a stacked winding form, which is convenient for improving the consistency of the welding point spacing, improving the welding quality and manufacturability. In Figure 18, the stator slot 211 has 36 slots and the number of poles is 6, so that the number of motor poles and the number of stator slots 211 can be adjusted as needed to improve the applicability of the winding structure 30 and expand the motor power and torque range.

[0215] In another embodiment, refer to FIG. 19, and also refer to FIGS. 6 and 8. The label S1 row represents the magnetic poles, where there are 12 magnetic poles, and each magnetic pole includes 3 stator slots 211. The label S2 row represents the numbers of the stator slots 211, where there are 36 stator slots 211, numbered from J1, J2 to J36. The label S3 column represents the phase of the winding, and FIG. 19 shows the U-phase winding. The label S4 column represents the numbers of the number of layers N of the main body portion 311, where the main body portion 311 has 4 layers, i.e., N = 4, numbered from T1 to T4, and the T1 layer is the first layer and the T4 layer is the last layer. The label S5 indicates the connection sequence number of each main body portion 311 connected in series in each phase winding, which indicates the positions of the main body portions 311 of each layer located in each stator slot 211; among them, the total number A of the main body portions 311 is 48, numbered from 1 to 48. The first main body portion 311 and the 48th main body portion 311 are connected to lead out the wire G5. The conductor components 310 are A / 2 pairs, that is, 24 pairs are provided. Then, the E-th main body portion 311 and the (E - 1)-th main body portion 311 are connected by the first connection wire G41, E is an even number, and the E-th main body portion 311 and the (E - 1)-th main body portion 311 are respectively located in the M-th layer and the (M - 1)-th layer, M is an even number, M ≤ N, and E ≤ A. When the B-th main body portion 311 and the (B + 1)-th main body portion 311 are respectively located in the T-th layer and the (T - 1)-th layer, B is an even number, then the B-th main body portion 311 and the (B + 1)-th main body portion 311 are connected by the interlayer connection wire G424, B < A, T is an even number, and T ≤ N. The (2K - 1)NP-th main body portion 311 and the (2K - 1)NP + 1-th main body portion 311 are connected by the last layer connection wire G422, for example, the 24th main body portion 311 and the 25th main body portion 311 are connected by the last layer connection wire G422. When the 2KP-th main body portion 311 and the 2KP + 1-th main body portion 311 are respectively located in the H-th layer and the (H + 1)-th layer, H is an even number and N ≥ H, the 2KP-th main body portion 311 and the 2KP + 1-th main body portion 311 are connected by the cross-layer connection wire G423, for example, the 12th main body portion 311 and the 13th main body portion 311 are connected by the cross-layer connection wire G423, and the 36th main body portion 311 and the 37th main body portion 311 are connected by the cross-layer connection wire G423. P is the number of pole pairs; P is a positive integer, K is a positive integer, and 2KNP < A. As can be seen from FIG. 19, the number of slots per pole per phase q = 1.

[0216] In Figure 19, the span of the first connecting wire G41 is a full pitch, the span of the last layer connecting wire G422 is a full pitch, the span of the cross-layer connecting wire G423 is a full pitch, and the span of the inter-layer connecting wire G424 is a full pitch. This structure can make the first connecting wire G41 preformed on the radial inner side of the winding structure 30 have the same span and number of cross-layers, so that the radial inner side of the winding structure 30 can be arranged neatly and tightly. The radial outer side of the winding structure 30 forms a stacked winding form, which facilitates improving the consistency of the weld spacing, improving welding quality and manufacturability. In Figure 19, the stator slots 211 are 36 slots, the number of poles is 12, and the number of slots per pole per phase q is 1. Therefore, the number of motor poles and the number of stator slots 211 can be adjusted as needed to improve the applicability of the winding structure 30 and expand the motor power and torque range.

[0217] In another embodiment, please refer to FIG. 20, and also refer to FIGS. 6 and 8. The label S1 row represents the magnetic poles, among which there are 6 magnetic poles, and each magnetic pole includes 9 stator slots 211. The label S2 row represents the numbers of the stator slots 211. There are 54 stator slots 211, numbered from J1, J2 to J54. The label S3 column represents the phase of the winding. FIG. 20 shows the U-phase winding. The label S4 column represents the numbers of the layers N of the main body part 311. There are 4 layers in the main body part 311, that is, N = 4, numbered from T1 to T4, and the T1 layer is the first layer and the T4 layer is the last layer. The label S5 indicates the connection sequence number of each main body part 311 connected in series in each phase winding, which indicates the positions of the main body parts 311 of each layer located in each stator slot 211. Among them, the total number A of the main body parts 311 is 72, numbered from 1 to 72. The first main body part 311 and the 72nd main body part 311 are connected to lead out wire G5. The conductor components 310 are A / 2 pairs, that is, 36 pairs are arranged. Then, the E-th main body part 311 and the (E - 1)-th main body part 311 are connected by the first connection wire G41, where E is an even number, and the E-th main body part 311 and the (E - 1)-th main body part 311 are respectively located in the M-th layer and the (M - 1)-th layer, M is an even number, M ≤ N, and E ≤ A. When the B-th main body part 311 and the (B + 1)-th main body part 311 are respectively located in the T-th layer and the (T - 1)-th layer, where B is an even number, then the B-th main body part 311 and the (B + 1)-th main body part 311 are connected by the interlayer connection wire G424, B < A, T is an even number, and T ≤ N. The 2KNP-th main body part 311 and the (2KNP + 1)-th main body part 311 are connected by the first layer connection wire G421. For example, the 24th main body part 311 and the 25th main body part 311 are connected by the first layer connection wire G421, and the 48th main body part 311 and the 49th main body part 311 are connected by the first layer connection wire G421. The ((2K - 1)NP)-th main body part 311 and the ((2K - 1)NP + 1)-th main body part 311 are connected by the last layer connection wire G422. For example, the 12th main body part 311 and the 13th main body part 311 are connected by the last layer connection wire G422, the 36th main body part 311 and the 37th main body part 311 are connected by the last layer connection wire G422, and the 60th main body part 311 and the 61st main body part 311 are connected by the last layer connection wire G422.When the 2KP-th main body part 311 and the (2KP + 1)-th main body part 311 are respectively located on the H-th layer and the (H + 1)-th layer, where H is an even number and N ≥ H, the 2KP-th main body part 311 and the (2KP + 1)-th main body part 311 are connected by a cross-layer connecting line G423. For example, the 6-th main body part 311 and the 7-th main body part 311 are connected by a cross-layer connecting line G423, the 18-th main body part 311 and the 19-th main body part 311 are connected by a cross-layer connecting line G423, the 30-th main body part 311 and the 31-th main body part 311 are connected by a cross-layer connecting line G423, the 42-th main body part 311 and the 43-th main body part 311 are connected by a cross-layer connecting line G423, the 54-th main body part 311 and the 55-th main body part 311 are connected by a cross-layer connecting line G423, and the 66-th main body part 311 and the 67-th main body part 311 are connected by a cross-layer connecting line G423. P is the number of pole pairs; P is a positive integer, K is a positive integer, and 2KNP < A. As can be seen from Figure 20, the number of slots per pole per phase q = 3.

[0218] In Figure 20, the span of the first connecting line G41 is a full pitch, the span of the first-layer connecting line G421 is a short pitch, the span of the last-layer connecting line G422 is a full pitch, the span of the cross-layer connecting line G423 is a full pitch, and the span of the inter-layer connecting line G424 is a full pitch. This structure can make the first connecting line G41 preformed on the radial inner side of the winding structure 30 have the same span and number of cross-layers, so that the radial inner side of the winding structure 30 can be arranged neatly and tightly. The radial outer side of the winding structure 30 forms an overlapping winding form, which is convenient for improving the consistency of the solder joint spacing, improving the welding quality and manufacturability. In Figure 20, the stator slots 211 are 54 slots and the number of magnetic poles is 6. Thus, the number of magnetic poles of the motor and the number of stator slots 211 can be adjusted as needed to improve the applicable range of the winding structure 30 and expand the motor power and torque range.

[0219] The present embodiment provides a winding structure 30, comprising a plurality of conductor components 310 arranged in a ring-shaped body 300. The conductor components 310 include a main body 311, an inner section 312, and an outer section 313 integrally formed from flat wire. The main body 311 extends radially along the ring-shaped body 300, the inner section 312 is connected to the radially inner end of the main body 311, and the outer section 313 is connected to the radially outer end of the main body 311. The main bodies 311 of the plurality of conductor components 310 are connected in series via a connecting wire G4, and lead wires G5 are provided at each end of the plurality of main bodies 311 connected in series. The connecting wire G4 includes a first connecting wire G41 and a second connecting wire G42. The conductor components 310 are arranged in pairs, and each pair of conductor components 310 is integrally formed from flat wire. The two inner sections 312 of each pair of conductor components 310 are connected to form a first connecting line G41. The span of the first connecting line G41 is set to a full pitch to facilitate batch molding and production to reduce costs, and also to facilitate the connection of paired conductor components 310. In the two pairs of conductor components 310 connected in series, the two outer sections 313 in the middle are connected to form a second connecting line G42. Each pair of conductor components 310 is made of flat wire as a whole. In the two pairs of conductor components 310 connected in series, the two outer sections 313 in the middle are welded together. The annular body 300 is stacked with N layers of main body parts 311 in the axial direction. The two main body parts 311 of each pair of conductor components 310 are respectively located in the Mth layer and the M-1th layer; N is an even number, M is an even number, and N ≥ M. Along the axial direction of the annular body 300: the lead-out line G5 connecting the two ends of the series-connected main body 311 is located in the same layer, the main body 311 connected to the lead-out line G5 is in the first layer, the second connecting line G42 in the first layer is the first layer connecting line G421, and the span of the first layer connecting line G421 is long or short; the layer away from the first layer is the last layer, the second connecting line G42 in the last layer is the last layer connecting line G422, and the span of the last layer connecting line G422 is a whole distance; the second connecting line G42 connecting the H-th layer main body 311 and the H+1-th layer main body 311 is a cross-layer connecting line G423, and the span of the cross-layer connecting line G423 is long, whole or short, H is an even number and N≥H. The winding structure 30 forms P pairs of magnetic poles, the number of main bodies 311 connected in series is A, the first main body 311 and the Ath main body 311 are respectively connected to the lead wire G5; in the second connecting wire G42 connecting the 2KPth main body 311 and the 2KP+1th main body 311: the second connecting wire G42 connecting the 2KNPth main body 311 and the 2KNP+1th main body 311 is the first layer connecting wire G421, the second connecting wire G42 connecting the (2K-1)NPth main body 311 and the (2K-1)NP+1th main body 311 is the last layer connecting wire G422, and the remaining second connecting wires G42 are cross-layer connecting wires G423, A is a positive integer, P is a positive integer, K is a positive integer, and 2KNP <A。This structure ensures that the preformed first connecting wires G41 on the radially inner side of the winding structure 30 have uniform spans and number of layers, allowing for uniform and compact alignment of the radially inner side of the winding structure 30. The radially outer side of the winding structure 30 forms a lapped winding pattern, facilitating consistent weld spacing, improving weld quality and manufacturability. Furthermore, the number of motor poles and stator slots 211 can be adjusted as needed to expand the applicability of the winding structure 30 and extend the motor's power and torque range.

[0220] Please refer to FIG. 6 and FIG. 8 . According to some embodiments of the present application, the present application further provides a stator 20 , comprising the winding structure 30 as described in any of the above embodiments.

[0221] The stator 20 of the present embodiment uses the above-mentioned winding structure 30, which is simplified and easy to assemble. In addition, the winding structure 30 is made of flat wire, which increases the proportion of winding coils per unit area, thereby improving the output torque of the axial motor 100 using the stator 20.

[0222] In some embodiments, the stator 20 further includes a stator core 21 . The stator core 21 is provided with stator slots 211 for accommodating the main body 311 of the winding structure 30 . The main body 311 is placed in the corresponding stator slots 211 .

[0223] The stator core 21 is set up, and the main body 311 is placed in the corresponding stator slot 211. This not only facilitates the fixing of the main body 311 and the installation of the fixed winding structure 30, but also can enhance the magnetic field strength generated by the winding structure 30 through the stator core 21, thereby improving the power of the axial motor 100 using the stator 20.

[0224] In some embodiments, the stator slots 211 are provided on one axial side of the stator core 21 ; or, the stator slots 211 are respectively provided on two opposite axial sides of the stator core 21 .

[0225] A stator slot 211 is provided on one side of the stator core 21 , and a winding structure 30 can be installed on one side of the stator core 21 so that the stator 20 using the stator core 21 can be suitable for the axial motor 100 , and the axial motor 100 has a rotor 10 provided on one side of its stator 20 .

[0226] Stator slots 211 are provided on opposite sides of the stator core 21, and winding structures 30 can be installed on opposite sides of the stator core 21. This allows the stator 20 using the stator core 21 to be suitable for use in an axial motor 100, in which the rotor 10 is provided on opposite sides of the stator 20. Providing stator slots 211 on opposite sides of the stator core 21 and installing winding structures 30 on opposite sides of the stator core 21 can also improve integration.

[0227] In some embodiments, when stator slots 211 are provided on opposite sides of the stator core 21, the stator slots 211 on opposite sides of the stator core 21 may be spaced apart. This allows the axially intermediate portion of the stator core 21 to form a magnetically conductive plate structure that separates the stator slots 211 on both sides. This magnetically conductive plate structure can, to a certain extent, shield the magnetic fields of the winding structures 30 on both sides of the stator 20 from mutual influence, thereby improving the output torque and output efficiency of the axial motor 100 using the stator 20. Furthermore, the provision of this magnetically conductive plate structure can also increase the structural strength of the stator core 21, thereby enhancing the structural strength of the stator 20.

[0228] In some embodiments, when the winding structure 30 is applied to the stator 20, the stator 20 may also not be provided with a stator core 21. That is, the winding structure 30 is applied to a stator 20 without an iron core to reduce the weight of the stator 20, thereby reducing the weight of the axial motor 100 using the stator 20.

[0229] In some embodiments, when the winding structure 30 is applied to a coreless stator 20 , the stator 20 may further include a support frame, and the winding structure 30 may be mounted on the support frame, and the support frame may be used to fix and support the winding structure 30 to improve the structural strength of the stator 20 .

[0230] In some embodiments, when the winding structure 30 is supported by a support frame, the support frame can be manufactured separately and then a mounting groove can be formed thereon to mount and fix the winding structure 30. The support frame can be made of materials such as plastic, resin, and aluminum alloy.

[0231] In some embodiments, when the winding structure 30 is supported by a support frame, after the winding structure 30 is manufactured, mold injection molding can be used to form a support frame on the winding structure 30, so that the winding structure 30 and the support frame form an integrated structure to stably support the winding structure 30, so that the shape of the winding structure 30 remains stable and easy to use, and when generating a rotating magnetic field, it can withstand the reverse force of the magnetic field to drive the rotor 10 to rotate.

[0232] Please refer to Figure 2. According to some embodiments of the present application, the present application also provides an axial motor 100, including a rotating shaft 11, a rotor 10 and a stator 20 as described in any of the above embodiments, the rotor 10 is fixedly mounted on the rotating shaft 11, the stator 20 is rotatably mounted on the rotating shaft 11, and the stator 20 is located on the side of the rotor 10.

[0233] The axial motor 100 of the embodiment of the present application uses the stator 20 of the above embodiment, and the structure is simplified, which can reduce costs, improve manufacturing efficiency, and reduce the size of the axial motor 100.

[0234] In some embodiments, referring to FIG. 2 to FIG. 4 , the stator 20 is disposed on at least one side of the rotor 10 ; and / or the rotor 10 is disposed on at least one side of the stator 20 .

[0235] Arranging the stator 20 on at least one side of the rotor 10 can facilitate the position layout of the stator 20. Arranging the rotor 10 on at least one side of the stator 20 can facilitate the position layout of the rotor 10.

[0236] In some embodiments, referring to FIG. 3 to FIG. 5 , there are multiple rotors 10 , and a stator 20 is disposed between two adjacent rotors 10 ; and / or, there are multiple stators 20 , and a rotor 10 is disposed between two adjacent stators 20 .

[0237] By providing a plurality of rotors 10 , an axial motor 100 structure with multiple rotors 10 can be realized. By providing a plurality of stators 20 , an axial motor 100 structure with multiple rotors 10 can be realized.

[0238] Please refer to FIG1 . According to some embodiments of the present application, the present application further provides a power assembly 1001 , including the stator 20 as described in any of the above embodiments; or including the axial motor 100 as described in the above embodiments.

[0239] Please refer to FIG. 1 . According to some embodiments of the present application, the present application further provides an output device, including the axial motor 100 as described in any of the above embodiments; or including the powertrain 1001 as described in the above embodiments.

[0240] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A winding structure, characterized in that: It comprises a plurality of conductor parts, wherein the plurality of conductor parts are arranged in a ring shape; The conductor component includes a main body portion, which is extended radially along the annular body. The main bodies of at least some of the conductor components are connected in series through a connecting wire, and lead wires are respectively provided at both ends of a winding formed by the series connection of the multiple main bodies.

2. The winding structure according to claim 1, characterized in that: The cross-sectional shape of the conductor component is circular, elliptical or polygonal.

3. The winding structure according to claim 1 or 2, characterized in that: The connecting wire includes a first connecting wire and a second connecting wire, the conductor parts are arranged in pairs, and one end of the two main bodies of each pair of the conductor parts is connected in series through the first connecting wire; in the two pairs of conductor parts connected in series, the other end of the main body of one of the conductor parts in one pair is connected to the other end of the main body of one of the conductor parts in the other pair through the second connecting wire.

4. The winding structure according to claim 3, characterized in that: The span of the first connecting line is an integral span.

5. The winding structure according to claim 3 or 4, characterized in that: The annular body is stacked with N layers of main bodies along the axial direction, and the two main bodies of each pair of conductor components are respectively located at the Mth layer and the M-1th layer; N is an even number, M is an even number, and N≥M.

6. The winding structure according to claim 5, characterized in that: In the axial direction of the annular body, the lead wires connected to the two ends of the winding formed by the main body parts connected in series are located in the same layer, the main body parts connected to the lead wires are located in the first layer, the second connecting wires located in the first layer are the first layer connecting wires, and the span of the first layer connecting wires is long distance or short distance; A layer far away from the first layer is the last layer, the second connection line in the last layer is the last layer connection line, and the span of the last layer connection line is the full span; The second connection line connecting the main body of the Hth layer and the main body of the H+1th layer is a cross-layer connection line, the span of the cross-layer connection line is long, full or short, H is an even number and N≥H.

7. The winding structure according to claim 6, characterized in that: The winding structure forms P pairs of magnetic poles, the number of the main bodies connected in series is A, the first main body and the Ath main body are respectively connected to the lead wires; in the second connecting wires connecting the 2KPth main body and the 2KP+1th main body: the second connecting wire connecting the 2KNPth main body and the 2KNP+1th main body is the first-layer connecting wire, the second connecting wire connecting the (2K-1)NPth main body and the (2K-1)NP+1th main body is the last-layer connecting wire, and the remaining second connecting wires are the cross-layer connecting wires, A is a positive integer, P is a positive integer, K is a positive integer, and 2KNP <A。 8. The winding structure according to any one of claims 3 to 7, characterized in that: The conductor component also includes an inner segment and an outer segment, the inner segment is connected to the radial inner end of the main body, and the outer segment is connected to the radial outer end of the main body, and the two inner segments of each pair of the conductor components are connected to form the first connecting line; in the two pairs of the conductor components connected in series: the two outer segments in the middle are connected to form the second connecting line.

9. The winding structure according to claim 8, characterized in that: The conductor component is made by integrally forming a flat wire.

10. The winding structure according to claim 8 or 9, characterized in that: Each pair of the conductor components is made by integrally forming a flat wire.

11. The winding structure according to any one of claims 8 to 10, characterized in that: In the two pairs of conductor components connected in series, the outer section of the main body of one of the conductor components in one pair is connected by welding to the outer section of the main body of one of the conductor components in the other pair.

12. The winding structure according to any one of claims 1 to 11, characterized in that: The annular body is stacked with N layers of main bodies in the axial direction, and the number of the main bodies located in the same layer in the axial direction of the annular body and in the same magnetic pole is q, N is an even number, and q is a positive integer.

13. The winding structure according to claim 12, characterized in that: When q≥2, the q main bodies located in the same axial layer of the annular body and in the same magnetic pole are arranged adjacent to each other.

14. The winding structure according to any one of claims 1 to 13, characterized in that: The winding structure comprises a single-phase winding, and the winding is made of a plurality of the conductor components connected in series; Alternatively, the winding structure comprises a multi-phase winding, the winding is made of a plurality of the conductor components connected in series, the windings of each phase have the same structure, and the multi-phase windings are evenly distributed along the circumference of the winding structure.

15. A stator, characterized in that: Comprising the winding structure according to any one of claims 1-14.

16. The stator according to claim 15, characterized in that The stator further comprises a stator core, and the stator core is provided with stator slots for accommodating a main body of the winding structure, and the main body is arranged in the corresponding stator slots.

17. The stator according to claim 16, characterized in that The stator slots are provided on one axial side of the stator core; or, the stator slots are provided on two opposite axial sides of the stator core, respectively.

18. An axial motor, characterized in that: It comprises a rotating shaft, a rotor and a stator as claimed in any one of claims 15 to 17, wherein the rotor is fixedly mounted on the rotating shaft, the stator is rotatably mounted on the rotating shaft, and the stator is located on the side of the rotor.

19. The axial motor according to claim 18, characterized in that The stator is disposed on at least one side of the rotor; and / or the rotor is disposed on at least one side of the stator.

20. The axial motor according to claim 18 or 19, characterized in that There are multiple rotors, and the stator is arranged between two adjacent rotors; and / or there are multiple stators, and the rotor is arranged between two adjacent stators.

21. A powertrain, characterized in that: The invention comprises a stator as claimed in any one of claims 15 to 17; or an axial motor as claimed in any one of claims 18 to 20.

22. An output device, characterized in that: Includes an axial motor as described in any one of claims 18-20; or includes a power assembly as described in claim 21.

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