Winding structure, stator, axial motor, power assembly and output equipment

Abstract

The invention provides a winding structure, a stator, an axial motor, a power assembly and output equipment. The winding structure comprises a plurality of conductor parts, and the plurality of conductor parts are arranged into an annular body; each conductor component comprises a main body part, the main body parts extend in the radial direction of the annular body, the main body parts of at least part of the conductor components are connected in series through connecting wires, and the two ends of a winding formed by connecting the main body parts in series are provided with outgoing lines respectively. By arranging a plurality of conductor parts, the conductor parts are arranged into an annular body; the main body parts of the conductor parts are arranged in the radial direction, the main body parts of at least part of the conductor parts are connected in series through the connecting wires, and the outgoing lines are arranged at the two ends of the winding formed by connecting the main body parts in series, so that the position arrangement of the main body parts of the conductor parts is facilitated; and moreover, the conductor parts can be conveniently connected in series, the outgoing line can be conveniently arranged, a complicated winding process is not needed, the structure is simplified, and assembly and preparation are facilitated.

Description

Technical Field

[0001] 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

[0002] 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 compact structure, high efficiency, and high power density. Existing motors usually have multiple slots on the stator core, each phase coil has multiple pole pairs and its corresponding winding is wound in each slot, and multiple 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 it is difficult to wind using flat wires. Summary of the invention

[0003] 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.

[0004] 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;

[0005] The conductor component comprises 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 connecting wires, and lead wires are respectively provided at both ends of the winding formed by the series connection of the multiple main bodies.

[0006] In the technical solution of the embodiment of the present application, a plurality of conductor components are provided and the conductor components are 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 plurality of conductor components are connected in series through connecting wires, and lead wires are arranged at both ends of the winding formed by the plurality of main body components connected in series, which 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, without the need for complicated winding processes, and the structure is simplified, which is convenient for assembly and preparation.

[0007] In some embodiments, the cross-sectional shape of the conductor component is circular, elliptical or polygonal. The cross-sectional shape of the conductor component is rectangular, and the conductor component is a flat wire conductor. The stator winding obtained by winding the flat wire conductor is used to construct the flat wire motor.

[0008] The conductor component of this structure is convenient for selecting the shape of the conductor component and for manufacturing the winding structure.

[0009] In some embodiments, 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 conductor parts is connected in series through the first connecting wire; in the two pairs of conductor parts in series: the other end of the main body of one pair of conductor parts is connected to the other end of the main body of another pair of conductor parts through the second connecting wire.

[0010] This structure facilitates the series connection of conductor components, especially the connection of two pairs of conductor components using the 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 the 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.

[0011] In some embodiments, the first connection line span is an integral distance.

[0012] The span of the first connecting line is set to be an integral span, which is convenient for batch molding and manufacturing to reduce costs, and is also convenient for connecting paired conductor components.

[0013] 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.

[0014] 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 when it is working; 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.

[0015] In some embodiments, along the axial direction of the annular body: the lead wires connected to the two 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 distance or short distance;

[0016] The layer farthest from the first layer is the last layer, the second connection line at the last layer is the last layer connection line, and the span of the last layer connection line is the full distance;

[0017] 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 a long distance, a full distance or a short distance, H is an even number and N≥H.

[0018] Setting the lead-out wires on the first layer facilitates the connection and lead-out of the lead-out wires for use; setting the span of the first layer of connecting wires to a long distance or a short distance can make the setting of the first layer of connecting wires more flexible, thereby facilitating the setting of conductor components to make a winding structure; setting the span of the last layer of connecting wires to a full distance can facilitate the forming and connection of the last layer of connecting wires. Setting the span of the cross-layer connecting wires to a full distance, a long distance or a short distance can make the setting of the cross-layer connecting wires more flexible, thereby facilitating the setting of conductor components to make a winding structure.

[0019] In some embodiments, the winding structure forms P pairs of magnetic poles, the number of main bodies connected in series is A, and 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。

[0020] 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.

[0021] In some embodiments, 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 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.

[0022] The conductor parts are provided with inner sections and outer sections, and the two inner sections of each pair of conductor parts 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 parts; and the two outer sections are connected to form a second connecting line, so as to connect the two pairs of conductor parts 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.

[0023] In some embodiments, the conductor component is made of flat wire in one piece.

[0024] 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 manufacturing 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.

[0025] In some embodiments, each pair of conductor components is made of flat wire in one piece.

[0026] Each pair of conductor components arranged in pairs is integrally formed 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 integrally formed to facilitate processing and assembly of the conductor components to form a winding structure.

[0027] In some embodiments, in the two pairs of conductor components connected in series: the two outer segments in the middle are connected by welding.

[0028] 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, make the two outer segments have good conductivity, reduce the impedance between the two outer segments, and facilitate connection.

[0029] In some embodiments, the winding structure forms P pairs of magnetic poles, where P is a positive integer.

[0030] The magnetic pair number formed by the winding structure 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.

[0031] In some embodiments, the annular body is stacked with N layers of main bodies along the axial direction, and the number of main bodies 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.

[0032] When the above structure is applied to the stator, the number of slots per pole per phase of the stator can be q, so as to facilitate 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 application scope of the winding structure design.

[0033] In some embodiments, 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.

[0034] 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.

[0035] In some embodiments, the winding structure includes a single-phase winding, the winding being made using a plurality of conductor components connected in series;

[0036] Alternatively, the winding structure includes a multi-phase winding, the winding is made of a plurality of conductor components 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.

[0037] The winding structure includes a single-phase winding, which has a simple 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 be applied to a multi-phase stator.

[0038] 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.

[0039] The stator of the embodiment of the present application uses the above-mentioned winding structure, which is simplified and easy to assemble and manufacture.

[0040] In some embodiments, the stator further includes 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 placed in the corresponding stator slots.

[0041] A stator core is provided and the main body is placed in the corresponding stator slot, which not only facilitates fixing the main body and thus 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.

[0042] In some embodiments, stator slots are provided on one axial side of the stator core; or, stator slots are provided on two opposite axial sides of the stator core.

[0043] A stator slot is arranged on one side of the stator core, and a winding structure can be installed on one side of the stator core, so as to be suitable for an axial motor in which a rotor is arranged on one side of the stator.

[0044] 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.

[0045] 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.

[0046] The axial motor of the embodiment of the present application uses the stator of the above-mentioned embodiment, and the structure is simplified, which can reduce the cost, improve the manufacturing efficiency, and reduce the size of the axial motor.

[0047] In some embodiments, a stator is disposed on at least one side of the rotor; and / or a rotor is disposed on at least one side of the stator.

[0048] 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.

[0049] In some embodiments, there are multiple rotors, and a stator is arranged between two adjacent rotors; and / or, there are multiple stators, and a rotor is arranged between two adjacent stators.

[0050] 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.

[0051] In a fourth aspect, an embodiment of the present application provides a power assembly, comprising a stator as described in any of the above embodiments; or comprising an axial motor as described in the above embodiments.

[0052] 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.

[0053] 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

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or exemplary technical descriptions will be briefly introduced below. 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 paying creative work.

[0055] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0056] Figure 2 This is a schematic diagram of the structure of an axial motor in some embodiments of the present application;

[0057] Figure 3 It is a schematic diagram of the structure of the axial motor of some other embodiments of the present application;

[0058] Figure 4 This is a schematic diagram of the structure of an axial motor according to some other embodiments of the present application;

[0059] Figure 5 It is a structural schematic diagram of an axial motor in some other embodiments of the present application;

[0060] Figure 6 This is a schematic diagram of the exploded structure of the stator in some embodiments of the present application;

[0061] Figure 7 This is a schematic diagram of the structure of the conductor component of some embodiments of the present application;

[0062] Figure 8 A schematic diagram of the structure of a pair of conductor components in some embodiments of the present application;

[0063] Fig. 9 A schematic diagram of the wiring structure of the U-phase winding of the winding structure of some embodiments of the present application;

[0064] Fig.10 for Fig. 9 Schematic diagram of the connection structure of the V-phase winding of the middle winding structure;

[0065] Fig.11 for Fig. 9 Schematic diagram of the connection structure of the W-phase winding of the middle winding structure;

[0066] Fig.12 A schematic diagram of the wiring structure of the U-phase winding of the winding structure of some embodiments of the present application;

[0067] Fig.13 A schematic diagram of the connection structure of the U-phase winding of the winding structure of other embodiments of the present application;

[0068] Fig.14 A schematic diagram of the wiring structure of the U-phase winding of the winding structure of some further embodiments of the present application;

[0069] Fig.15 A schematic diagram of the wiring structure of the U-phase winding of the winding structure of some other embodiments of the present application;

[0070] Fig.16 A schematic diagram of the connection structure of the U-phase winding of the winding structure of other embodiments of the present application;

[0071] Fig.17 A schematic diagram of the wiring structure of the U-phase winding of the winding structure of some other embodiments of the present application;

[0072] Fig.18 A schematic diagram of the wiring structure of the U-phase winding of the winding structure of some embodiments of the present application;

[0073] Fig.19 A schematic diagram of the connection structure of the U-phase winding of the winding structure of other embodiments of the present application;

[0074] Fig. 20 This 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.

[0075] Among them, the main marks of the drawings in the figure are:

[0076] 1000-vehicle; 1001-powertrain; 100-axial motor; 200-transmission; 1002-controller; 1003-motor;

[0077] 10- rotor; 11- shaft;

[0078] 20- stator;

[0079] 21- stator core; 211- stator slot; 22- fixing bracket;

[0080] 30-winding structure; 300-ring body; 310-conductor component; 311-main body; 312-inner section; 313-outer section; G4-connecting wire; G41-first connecting wire; G42-second connecting wire; G421-first layer connecting wire; G422-last layer connecting wire; G423-cross-layer connecting wire; G424-inter-layer connecting wire; G5-lead-out wire. DETAILED DESCRIPTION

[0081] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0082] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field 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" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0083] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0084] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments in any suitable manner.

[0085] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0086] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces). "Several" means one or more than one, unless otherwise clearly and specifically defined.

[0087] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and 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, and therefore should not be understood as a limitation on the embodiments of the present application.

[0088] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0089] In the description of the embodiments of the present application, unless otherwise clearly specified and 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.

[0090] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "adjacent" refers to proximity in position. For example, among the three components A1, A2 and B, if 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 C components, the multiple C components 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.

[0091] In the embodiments of the present application, the motor is also called an electric motor. The motor generally consists of a rotor and a stator. The motor is a device that converts electrical energy into mechanical energy, including a motor and a generator. The fixed part of the motor is called a stator, and the rotating part of the motor is called a rotor.

[0092] For an electric motor, the stator refers to the stationary part of the motor, and its function is to generate a rotating magnetic field. The rotor refers to the rotating part of the motor, and its function is to realize the conversion of electrical energy into mechanical energy. The stator generally generates a rotating magnetic field through its winding 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 the 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 action of each coil in the pole phase group are the same, and these coils jointly generate the magnetic poles in the phase winding.

[0093] Some other terms in the embodiments of the present application are explained as follows.

[0094] 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.

[0095] Parallel branch: A group or multiple groups of coils connected in a motor in accordance with the prescribed connection method is called a parallel branch. For motors with low rated power, generally, all the pole-phase groups of the windings are connected in series in accordance with the prescribed connection method, and then connected to the power supply. However, for motors with higher rated power, since the required current is relatively large, all the pole-phase groups of the windings must be connected in series into two or more branches, and then connected in parallel to the power supply according to the prescribed connection method. This is a parallel branch.

[0096] Magnetic pole pair number: When the motor winding is powered on, a magnetic field will be generated, and magnetic poles will be formed accordingly. The magnetic poles appear in pairs of N poles and S poles, which is also called the magnetic pole pair number, or pole pair number for short. When the number of magnetic pole pairs is P, the number of magnetic poles is 2P, and the number of magnetic poles should be an even number.

[0097] Pole pitch: refers to the distance occupied by each magnetic pole of the motor along the circumferential surface of the air gap. The pole pitch can be expressed by the number of stator slots of the stator core. For example, the pole pitch is Z / 2P; Z is the total number of stator slots of the stator core, and P is the number of magnetic pole pairs. Stator slots refer to the slot structure provided on the stator core for winding coils.

[0098] Pitch: refers to the distance between the centers of the two effective sides of a coil on the stator circumference. Counted by the number of stator slots, it is the number of slots occupied by the two effective sides of a coil. Pitch can be represented by y, and the value of y is expressed in the number of slots. For example: y = 8, it is usually expressed in the form of (1-9) slots, that is, one side of the coil is embedded in the first slot, and the other side is embedded in the ninth slot. The distance between the center lines of the slots spanned by the two sides is 8 slots (the first slot and the ninth slot are each counted half).

[0099] 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 smaller than the pole pitch, it is called the short pitch; when the pitch y is larger than the pole pitch, it is called the long pitch.

[0100] 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.

[0101] Connecting wire: refers to the conductive wire connecting the two effective sides of the coil. Connecting wire pitch: refers to the equivalent span between the conductors in the slot connected by the connecting wire. According to the different pitches spanned by the connecting wire, it can be divided into full pitch, short pitch and long pitch. Full pitch: refers to the connecting wire with a pitch equal to the pole pitch. Short pitch: refers to the connecting wire with a pitch less than the pole pitch. Long pitch: refers to the connecting wire with a pitch greater than the pole pitch.

[0102] 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.

[0103] 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.

[0104] Electric motors can be divided into radial motors and axial motors. A radial motor is a motor in which the stator and the 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. Axial motors are motors in which the stator and the 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 correspondingly, the rotor is also located on the side of the stator. For the 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.

[0105] The stator generally includes a stator core (also called a stator core) and windings. The windings are wound on the stator core. In order to facilitate the winding of the windings, the stator core also has stator slots to accommodate the windings. The stator core can strengthen the magnetic field generated by the windings and increase the power of the stator. Of course, for some motors, in order to reduce weight, the stator core can be omitted and the magnetic field generated by the windings can be directly used to form a coreless stator.

[0106] The torque output of the motor is determined by the voltage applied to the winding wire, the density of the wire and the number of coils, and the maximum speed is determined by the amount of current flowing through the coils. The slot fill factor is the ratio of the cross-sectional area occupied by the copper wire in the stator slot to the total amount of space available in the bare slot. The biggest challenge facing stator manufacturing is to maximize the amount of copper wire inserted into each slot (commonly known as the "slot fill factor") to maximize torque output.

[0107] The wire group made of flat wire can be called flat wire winding, which can better adapt to the shape of stator slots and improve the full slot rate. Flat wire refers to a wire with a width greater than thickness and a rectangular cross section.

[0108] The current winding topology of axial motors mostly uses wires to directly wind coils on the stator core, or installs the coils on the stator core after winding. However, due to the large width of the flat wire, it is difficult to bend it in the width direction, which makes it difficult to wind the coils with the flat wire. Moreover, for motors with higher power, the cross-section of the flat wire is larger. Directly using the flat wire to wind the coil will make the flat wire more fluffy, resulting in a decrease in the slot fill rate.

[0109] 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 to facilitate the position layout of each conductor component. Lead wires are set at both ends formed by multiple main body parts connected 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.

[0110] The stator disclosed in the embodiment of the present application can be used for an axial motor. The axial motor can be used as a power structure to be applied to a powertrain, an output device, etc. as a power source. The powertrain can also be applied to an output device. The output device can be, but is not limited to, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric car, a ship, a spacecraft, and the like. The electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

[0111] 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 and other devices to form a powertrain.

[0112] For the convenience of explanation, an output device is provided in accordance with an embodiment of the present application, and the output device is explained by taking a vehicle as an example.

[0113] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may 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 may be provided at the bottom, head or tail of the vehicle 1000. The powertrain 1001 may be used to provide driving force to the vehicle 1000. The vehicle 1000 may also include a controller 1002 and a battery 1003, and 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 may also be used to control the battery 1003 to supply power to the powertrain 1001, for example, for the starting, navigation and working power requirements of the vehicle 1000 during driving.

[0114] In some embodiments, the powertrain 1001 includes an axial motor 100, and the axial motor 100 is used as a power source of the powertrain 1001. It can be understood that the powertrain 1001 is not limited to being used in the vehicle 1000, but can also be used in other devices that require power output.

[0115] In some embodiments, the powertrain 1001 may further include a transmission 200, which is connected to the axial motor 100 to achieve torque change of the axial motor 100. A transmission (English: Transmission), also known as a gearbox, is a mechanism used to change the speed and torque from an input device, and it can set the output shaft and input shaft transmission ratio at a fixed value or change the output shaft and input shaft transmission ratio.

[0116] In some embodiments, the controller 1002 may be integrated with the axial motor 100 to form a powertrain 1001 .

[0117] In some embodiments, the battery 1003 may be integrated with the axial electric machine 100 to form a powertrain 1001 .

[0118] In some embodiments, the transmission 200 and the controller 1002 may be integrated with the axial electric machine 100 to form a powertrain 1001 .

[0119] 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 a thermal management device.

[0120] See also Figure 2 , Figure 2 A schematic diagram of the structure of an axial motor 100 provided in one embodiment of the present application.

[0121] 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 .

[0122] The rotating shaft 11 is a shaft for outputting power in the axial motor 100. The rotating shaft 11 is fixedly connected to the rotor 10 and can rotate driven by the rotor 10 to output power. The stator 20 is rotatably mounted on the rotating shaft 11 so that the rotating shaft 11 can rotate relative to the stator 20.

[0123] The stator 20 is located on the side of the rotor 10 , which means that the stator 20 is located on one side of the axial direction of the rotor 10 , so that the stator 20 drives the rotor 10 to rotate, and further drives the rotating shaft 11 to rotate.

[0124] 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 .

[0125] 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 .

[0126] The circumferential direction refers to the direction around the axis of the rotating shaft 11 , which is also the direction around the axis of the rotor 10 .

[0127] In some embodiments, there may 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 volume. In this structure, the side of the rotor 10 close to the stator 20 is the stator side.

[0128] See also Figure 3 , Figure 3 A schematic diagram of the structure of an axial motor 100 provided in one embodiment of the present application.

[0129] In some embodiments, the axial motor 100 includes two stators 20 and a rotor 10, and the two stators 20 are located on opposite sides of the rotor 10, so that the same rotor 10 can be driven to rotate by the two stators 20 to improve the output power, and the structure of the axial motor 100 is more compact. In this structure, since the stators 20 are provided on opposite sides of the rotor 10, the opposite sides of the rotor 10 are both stator sides.

[0130] See also Figure 4 , Figure 4 A schematic structural diagram of an axial motor 100 provided in one embodiment of the present application.

[0131] In some embodiments, the axial motor 100 includes two rotors 10 and a stator 20, and the two rotors 10 are located on opposite sides of the stator 20, so that the two rotors 10 can be driven to rotate by one stator 20, and the same rotating shaft 11 can be driven to rotate, so as to improve the output power, and the structure of the axial motor 100 is more compact. In this structure, since the stator 20 is provided on one side of each rotor 10, the side of the rotor 10 close to the stator 20 is the stator side.

[0132] See also Figure 5 , Figure 5 A schematic structural diagram of an axial motor 100 provided in one embodiment of the present application.

[0133] In some embodiments, the axial motor 100 includes multiple rotors 10 and multiple stators 20, wherein a stator 20 is disposed between two adjacent rotors 10, and a rotor 10 is disposed between two adjacent stators 20, and multiple rotors 10 are driven to rotate by multiple stators 20, thereby driving the rotating shaft 11 to rotate, so as to increase the output power. In this structure, the side of each rotor 10 close to the stator 20 is the stator side.

[0134] See also Figure 6 , Figure 6 It is a schematic diagram of the exploded structure of the stator 20 according to some embodiments of the present application.

[0135] Please also read Figure 2 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 a stator slot 211 is provided on the stator core 21 to install the winding structure 30. The winding structure 30 is arranged 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 improving the power of the axial motor using the stator 20.

[0136] The stator core 21 can be made of magnetic conductive materials such as silicon steel sheets. For the stator core 21 of the axial motor 100, silicon steel sheets can be wound to reduce eddy current losses and improve the working efficiency of the axial motor 100 using the stator 20. Of course, the stator core 21 can also be made of other magnetic conductive materials.

[0137] In some embodiments, the stator 20 further includes a fixing bracket 22. The fixing bracket 22 refers to a structural member used to fix and support the stator core 21. The stator core 21 is mounted on the fixing bracket 22, and the fixing bracket 22 supports the stator core 21, and further supports the winding structure 30, so that the stator 20 can be installed and used.

[0138] In some embodiments, the fixing bracket 22 may be made of a steel plate, which can well support the stator core 21, and when connected, the stator core 21 and the fixing bracket 22 may be welded, so that the fixing bracket 22 can well support the stator core 21. In particular, when the stator core 21 is formed by winding silicon steel sheets, the fixing bracket 22 is welded to the stator core 21, and the shape of the stator core 21 can be fixed by the fixing bracket 22, so that the winding structure 30 can be installed on the stator core 21.

[0139] In some embodiments, a stator slot 211 is disposed on one axial side of the stator core 21 .

[0140] One side of the stator core 21 refers to one side along the axial direction of the stator core 21. The stator slot 211 is arranged on one side of the stator core 21, and the winding structure 30 can be installed on the side of the stator core 21 to form a stator 20 structure with winding arranged on one side.

[0141] A stator slot 211 is provided on one side of the stator core 21 , and a winding structure 30 may be installed on one side of the stator core 21 , so that the stator using the stator core 21 may be suitable for the axial motor 100 , and the axial motor 100 may be provided with a rotor on one side of its stator 20 .

[0142] In some embodiments, please refer to Figure 4 Stator slots 211 are respectively provided on two opposite axial sides of the stator core 21 .

[0143] 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 arranged on the opposite sides of the stator core 21, and winding structures 30 can be respectively installed on both sides of the stator core 21 to form a stator 20 structure with windings arranged on both sides.

[0144] Stator slots 211 are respectively arranged 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 using the stator core 21 can be suitable for the axial motor 100, and the axial motor 100 can be respectively arranged with rotors on opposite sides of its stator 20.

[0145] See also Figures 6 to 11 , Figure 6 Schematic diagram of the exploded structure of the stator 20 of some embodiments of the present application; Figure 7 It is a schematic structural diagram of a single conductor component 310 in some embodiments of the present application; Figure 8 It is a schematic structural diagram of a pair of conductor components 310 in the conductor components arranged in pairs in some embodiments of the present application; Fig. 9 Schematic diagram of the connection structure of the U-phase winding of the winding structure 30 of some embodiments of the present application; Fig.10 for Fig. 9 A schematic diagram of the wiring structure of the V-phase winding of the middle winding structure 30; Fig.11 for Fig. 9 Schematic diagram of the connection structure of the W-phase winding of the winding structure 30.

[0146] The embodiment of the present application provides a winding structure 30, including a plurality of conductor components 310, wherein the plurality of conductor components 310 are arranged in a ring-shaped body 300; Figure 7 As shown, the conductor component 310 includes a main body 311, which is extended radially along the ring body 300. The main bodies 311 of at least some of the conductor components 310 among the multiple conductor components 310 are connected in series through a connecting wire G4, and lead wires G5 are respectively provided at both ends of the coil formed by the multiple main bodies 311 in series.

[0147] The conductor component 310 refers to an electrical conductor made of a wire. The wire used to make the winding is generally made of metal copper so that the wire impedance is small and a larger current can pass through. It is understandable that the wire can also be made of other materials with good conductivity. For example, in some embodiments, the wire can be made of materials such as aluminum.

[0148] The ring body 300 refers to a structure that is in an annular shape as a whole. A plurality of conductor components 310 are arranged in an annular body 300: it means that the winding structure 30 made of these conductor components 310 is in an annular shape. When the winding structure 30 includes a single-phase winding, the single-phase winding is arranged and made using the conductor components 310, and is in an annular shape as a whole. In this case, the ring body 300 is the winding structure 30 as a whole. When the winding structure 30 includes a multi-phase winding, each phase winding is arranged and made using the conductor components 310, and each phase winding is in an annular shape as a whole, and the winding structure 30 formed by the multi-phase winding is also in an annular shape as a whole. In this case, the ring body 300 is a structure formed by one phase winding; and the ring bodies 300 formed by the multi-phase winding are combined to form the winding structure 30.

[0149] The main body 311 is a partial structure of the conductor component 310 , and is arranged to extend in the radial direction of the annular body 300 , so as to be applied in the axial motor 100 .

[0150] The connection line G4 is a conductive line that connects the two main body parts 311 .

[0151] The main bodies 311 of the plurality of conductor components 310 are connected in series through the connecting wire G4, which means that the main bodies 311 of the 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 both ends of these main bodies 311 connected in series, and lead wires G5 are set on the two main bodies 311 located at the ends to connect the drive and control circuits, so as to supply power to the winding structure 30 to generate a magnetic field. The main bodies 311 are connected in series using the connecting wire G4, which is convenient for connection and installation of the main bodies 311. Even after the main bodies 311 are installed, they can be connected through the connecting wire G4 to form a coil winding, without the need to wind the conductor components 310 into coils and then install them on the stator core, so as to facilitate the manufacture of the winding structure 30.

[0152] 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 plurality of conductor components 310 are connected in series through a connecting line G4, and lead wires G5 are provided at both ends of the plurality of main bodies 311 connected in series, which 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 in series with the lead wire G5, without the need for a complicated winding process, and the structure is simplified, which is convenient for assembly and preparation.

[0153] In some embodiments, the cross-sectional shape of the conductor component 310 is circular, elliptical, or polygonal.

[0154] The cross section of the conductor component 310 refers to the cross section perpendicular to the length direction 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 may be a triangle, a quadrilateral, or a polygon with more than four sides. The quadrilateral may be a parallelogram, a trapezoid, or an irregular quadrilateral. The parallelogram may be a rectangle, a square, a rhombus, or other parallelograms. The polygon with more than four sides may be a pentagon, a hexagon, etc.

[0155] 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 manufacture of the winding structure 30 .

[0156] 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 a main body 311 in one pair of conductor components 310 is connected to the other end of a main body 311 in another pair of conductor components 310 through the second connecting line G42.

[0157] The first connection wire G41 refers to a connection wire that connects one end of the main body portion 311 of the paired conductor member 310 .

[0158] The second connection line G42 is a connection line that connects two pairs of conductor components 310 in series, and the second connection 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 to achieve 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 another pair of conductor components 310 through the second connection line G42 to achieve the series connection of the two pairs of conductor components 310. After 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 through the second connection line G42.

[0159] 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 by the first connecting line G41, which makes the connection more convenient. The other end of a main body 311 in a pair of conductor components 310 is connected to the other end of a main body 311 in another 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 by 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.

[0160] 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, especially 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 through the first connecting wire G41; the other end of the main body 311 of the conductor component 310, especially the radially outer end, is connected to the radially outer end of the main body 311 of the conductor component 310 on the other side of the series connection through the second connecting wire G42. In this structure, the first connecting wire G41 is arranged on the radially inner side of the manufactured winding structure 30, and the second connecting wire G42 is located on the radially outer side of the manufactured winding structure 30.

[0161] 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, especially 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 adjacent conductor component 310 through the first connecting wire G41; the other end of the main body 311 of the conductor component 310, especially the radially inner end, is connected to the radially inner end of the main body 311 of the conductor component 310 on the other side of the series adjacent conductor component 310 through the second connecting wire G42. In this structure, the first connecting wire G41 is arranged on the radially outer side of the manufactured winding structure 30, and the second connecting wire G42 is located on the radially inner side of the manufactured winding structure 30.

[0162] 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.

[0163] In some embodiments, the span of the first connection line G41 is an entire distance.

[0164] The span of the first connecting wire G41 is set to be a full span, which is convenient for batch molding and manufacturing to reduce costs, and is also convenient for connecting paired conductor components 310.

[0165] 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 at the Mth layer and the M-1th layer; N is an even number, M is an even number, and N≥M.

[0166] The annular body 300 is stacked with N layers of main body parts 311 along the axial direction, which means that N layers of main body parts 311 are stacked along the axial direction of the winding structure 30 at the position corresponding to each main body part 311. When the winding structure 30 is installed on the stator core 21, N layers of main body parts 311 are stacked in each stator slot 211 along the axial direction of the stator 20.

[0167] By arranging the two main bodies 311 of the paired conductor components 310 on the Mth layer and the M-1th layer respectively, the installation positions of the paired conductor components 310 can be clearly identified, which facilitates the installation and fixation of the main bodies 311 of the paired conductor components 310 .

[0168] 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 portions 311 of each pair of conductor components 310 are 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.

[0169] 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, whole or short, and H is an even number and N≥H.

[0170] 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 .

[0171] 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 ring body 300, which is not only convenient for layout design, but also convenient for connection of the lead wire G5.

[0172] 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 away 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, the main body 311 is stacked in the corresponding stator slot 211 of the stator core 21, when 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 when 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.

[0173] Since the two main bodies 311 of the paired conductor components 310 are located at the Mth layer and the M-1th layer respectively, the connecting wire G4 at the first layer and the connecting wire G4 at the last layer are both second connecting wires G42. The second connecting wire G42 at the first layer is defined as a first layer connecting wire G421, and the second connecting wire G42 at the last layer is defined as a last layer connecting wire 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 interlayer connecting lines G424, and the span of the interlayer connecting lines G424 is an integer; 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.

[0174] The lead-out wire G5 is arranged on the first layer, which is convenient for connection and lead-out of the lead-out wire G5 for use; the span of the first layer connection wire G421 is set to a long distance or a short distance, which makes the setting of the first layer connection wire G421 more flexible, thereby facilitating the setting of the conductor component 310, so as to make the winding structure 30; the span of the last layer connection wire G422 is set to a full distance, which makes it convenient for the molding and connection of the last layer connection wire G422. The span of the cross-layer connection wire G423 is set to a full distance, a long distance or a short distance, which makes the setting of the cross-layer connection wire G423 more flexible, thereby facilitating the setting of the conductor component 310, so as to make the winding structure 30. Since most of the second connection wires G42 are interlayer connection wires G424, the span of the interlayer connection wire G424 is set to a full distance, which facilitates the molding, manufacturing and connection of the main body 311 and the interlayer connection wire G424.

[0175] Setting the span of the first layer connection line 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 connection line G423 to a short distance can also effectively reduce the harmonics of the winding structure 30 and suppress the rotor eddy current loss.

[0176] In some embodiments, 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。

[0177] The number of main bodies 311 connected in series is A, which means that the number of main bodies 311 forming one phase winding is A, and these main bodies 311 are arranged in series. Then the conductor part 310 is arranged in A / 2 pairs. These main bodies 311 are numbered 1, 2, 3...A in the order of series connection, and the first main body 311 and the Ath main body 311 are connected to the lead wire G5 respectively. The 2KNPth main body 311 is connected to the 2KNP+1th main body 311 through the first layer connection wire G421. The (2K-1)NPth main body 311 is connected to the (2K-1)NP+1th main body 311 through the last layer connection wire G422. The rest of the second connection wires G42 between the 2KPth main body 311 and the 2KP+1th main body 311 are cross-layer connection wires 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 and the numbers of the connected main body parts 311 to facilitate pre-processing and assembly connection.

[0178] 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.

[0179] The inner section 312 refers to a section of the conductor component 310 connected to the radial inner side of the main body 311. The outer section 313 refers to a section of the conductor component 310 connected to the radial outer side of the main body 311. The main body 311 is extended along the radial direction of the annular body 300, and the radial direction of the annular body 300 is consistent with the radial direction of the winding structure 30. When the winding structure 30 is applied to the stator 20, the radial direction of the winding structure 30 is on the radial side of the stator 20.

[0180] The radial inner side refers to the side along the radial direction of the stator 20 and close to the center of the stator 20; it also refers to the side along the radial direction of the winding structure 30 and close to the center of the annular winding structure 30. The radial outer side is the side opposite to the radial inner side, that is, the side along the radial direction of the winding structure 30 and away from the center of the annular winding structure 30.

[0181] The conductor component 310 is provided with an inner section 312 and an outer section 313, and the two inner sections 312 of each pair of conductor components 310 are connected to form a first connection line G41, that is, the two inner sections 312 of the two conductor components 310 connected in series are connected to form the first connection line G41, so as to facilitate the setting of the first connection line G41 and the series connection of the pair of conductor components 310. It can be understood that the first connection line G41 can also be separately provided to connect the main bodies 311 of the two conductor components 310 in pairs.

[0182] The two outer segments 313 in the middle of the two pairs of conductor components 310 that need to be connected in series are connected to form a second connection line G42, that is, the two outer segments 313 are connected to form the second connection line G42, so that the two pairs of conductor components 310 are connected in series, which is also convenient for setting the second connection line G42, that is, the two outer segments 313 of the two conductor components 310 in series are connected to form the second connection line G42. It can be understood that the second connection line G42 can also be set separately to connect the two main body parts 311 in the middle of the two pairs of conductor components 310 in series.

[0183] 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 .

[0184] In some embodiments, the conductor component 310 is made of flat wire in one piece.

[0185] 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 of flat wire, which can facilitate the processing and manufacturing 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.

[0186] In some embodiments, each pair of conductor components 310 is made of flat wire in one piece.

[0187] like Figure 8 As shown, each pair of conductor components 310 arranged in pairs is integrally formed using a flat wire, that is, one flat wire is used to preform two conductor components 310, and the inner sections 312 of the two conductor components 310 are integrally formed, so as to facilitate processing and manufacturing, and also facilitate assembly of the conductor components 310 to form the winding structure 30. In addition, this structure makes the preformed structure of the first connecting wire G41 consistent, so that it can be arranged neatly and tightly at the inner circle of the annular winding structure 30, effectively reducing the radial inner end height of the winding structure 30, and improving manufacturability.

[0188] In some embodiments, in the two pairs of conductor components 310 connected in series: the two outer segments 313 in the middle are connected by welding.

[0189] 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, that is, the two outer segments 313 that form the second connecting wire G42 are welded to improve the connection strength, so that the two outer segments 313 have good conductivity, reduce the impedance between the two outer segments 313, and facilitate connection. It can be 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 in other ways, such as connecting through terminal blocks, bundling and fixing. In addition, the structure can prefabricate the shape of each outer segment 313, and the main body 311 is stacked in the axial direction. Accordingly, the outer segments 313 can form a stacked winding form at the periphery of the winding structure 30, that is, the two outer segments 313 that need to be welded can be stacked in the axial direction, so that there will be no mutual nesting of long-distance and short-distance connecting wires G4, so that the spacing between the two outer segments 313 that need to be welded together tends to be consistent, so as to improve welding quality and manufacturability; alternatively, the two connected outer segments 313 can also be butt-connected in the circumferential direction.

[0190] In some embodiments, the winding structure 30 forms P pairs of magnetic poles, where P is a positive integer.

[0191] The magnetic pair number 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.

[0192] In some embodiments, the annular body 300 is stacked with N layers of main body parts 311 along the axial direction, and the number of main body parts 311 located in the same axial layer of the annular body 300 and in the same magnetic pole is q, N is an even number, and q is a positive integer.

[0193] 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 manufacture 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 application scope of the winding structure 30 design.

[0194] 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.

[0195] The q main bodies 311 located at the same axial layer of the annular body 300 and at the same magnetic pole mean that the q main bodies 311 are located at the same axial layer of the annular body 300 and at the same magnetic pole.

[0196] 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.

[0197] In some embodiments, the winding structure 30 includes a single-phase winding, and the winding is made of a plurality of conductor components 310 connected in series.

[0198] The winding structure 30 includes a single-phase winding, has a simple structure, and can be applied to a single-phase stator 20 .

[0199] In some embodiments, the winding structure 30 includes a multi-phase winding, which is made of a plurality of 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 .

[0200] When the winding structure 30 includes multi-phase windings, the multi-phase winding structure 30 is 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 .

[0201] Please refer again Figures 9 to 11 , and please also refer to Figure 6 and Figure 8 , wherein the row labeled S1 represents the magnetic poles, of which there are 8 magnetic poles, and each magnetic pole includes 6 stator slots 211. The row labeled S2 represents the number of the stator slots 211, of which there are 48 stator slots 211, numbered from J1, J2 to J48. The column labeled S3 represents the phase of the winding, Fig. 9 is the U-phase winding, Fig.10 is the V-phase winding, Fig.11It is the W-phase winding, and the phases of the U, V, and W three-phase windings differ by 120 degrees. The label S4 column represents the number N of the layers of the main body 311. Among them, the main body 311 has 4 layers, that is, N = 4, and the numbers range 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 number of each main body 311 connected in series in each phase winding, and it indicates the position of each layer of the main body 311 in each stator slot 211. Among them, the total number A of the main bodies 311 is 64, from 1 to 64. The first main body 311 and the 64th main body 311 are connected to lead out the wire G5. The conductor components 310 are A / 2 pairs, that is, 32 pairs are arranged. Then the E-th main body 311 is connected to the (E - 1)-th main body 311 through the first connection wire G41, E is an even number, and the E-th main body 311 and the (E - 1)-th main body 311 are respectively located on 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 311 and the (B + 1)-th main body 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 311 and the (B + 1)-th main body 311 are connected by the interlayer connection wire G424, B < A, T is an even number, 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 32nd main body 311 and the 33rd 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 16th main body 311 and the 17th main body 311 are connected by the last-layer connection wire G422, and the 48th main body 311 and the 49th 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 on the H-th layer and the (H + 1)-th layer, 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 8th main body 311 and the 9th main body 311 are connected by the cross-layer connection wire G423, the 24th main body 311 and the 25th main body 311 are connected by the cross-layer connection wire G423, the 40th main body 311 and the 41st main body 311 are connected by the cross-layer connection wire G423, and the 56th main body 311 and the 57th 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. From Fig. 9 It can be seen that the number of slots per pole per phase q = 2.

[0202] The U-phase winding, V-phase winding, and W-phase winding have the same connection structure, only the stator slots 211 are offset backward by two numbers during winding.

[0203] Figures 9 to 11In the embodiment, 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 can make the first connecting wire G41 preformed on the radial inner side of the winding structure 30 have the same span and a coordinated 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 is preferably formed in a stacked winding form, which is convenient for improving the consistency of the spacing between the weld points, improving the welding quality and manufacturability.

[0204] In one embodiment, see Fig.12 , and please also refer to Figure 6 and Figure 8 , wherein the row labeled S1 represents the magnetic poles, of which there are 8 magnetic poles, and each magnetic pole includes 6 stator slots 211. The row labeled S2 represents the number of the stator slots 211, of which there are 48 stator slots 211, numbered from J1, J2 to J48. The column labeled S3 represents the phase of the winding, Fig.12is the U-phase winding. The label S4 column represents the number of the layer N of the main body 311. Among them, the main body 311 has 4 layers, that is, N = 4, and the numbers range 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 number of each main body 311 connected in series in each phase winding, which indicates the position of each layer of the main body 311 in each stator slot 211. Among them, the total number A of the main bodies 311 is 64, ranging from 1 to 64. The first main body 311 and the 64th main body 311 are connected to lead out the wire G5. The conductor components 310 are A / 2 pairs, that is, 32 pairs are arranged. 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 located on the M-th layer and the (M - 1)-th layer respectively, 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 located on the T-th layer and the (T - 1)-th layer respectively, 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 32nd main body 311 and the 33rd 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 16th main body 311 and the 17th main body 311 are connected by the last-layer connection wire G422, and the 48th main body 311 and the 49th 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 located on the H-th layer and the (H + 1)-th layer respectively, 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 8th main body 311 and the 9th main body 311 are connected by the cross-layer connection wire G423, the 24th main body 311 and the 25th main body 311 are connected by the cross-layer connection wire G423, the 40th main body 311 and the 41st main body 311 are connected by the cross-layer connection wire G423, and the 56th main body 311 and the 57th 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. From Fig.12 it can be seen that the number of slots per pole per phase q = 2.

[0205] Fig.12In the embodiment, the span of the first connecting wire G41 is a full span, the span of the first layer connecting wire G421 is a long 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 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 welding points, improving the welding quality and manufacturability. Fig.12 The span of the first-layer connecting line G421 is set to a long distance to facilitate the flexible layout of the lead-out line G5.

[0206] In another embodiment, see Fig.13 , and please also refer to Figure 6 and Figure 8 , wherein the row labeled S1 represents the magnetic poles, of which there are 8 magnetic poles, and each magnetic pole includes 6 stator slots 211. The row labeled S2 represents the number of the stator slots 211, of which there are 48 stator slots 211, numbered from J1, J2 to J48. The column labeled S3 represents the phase of the winding, Fig.13is the U-phase winding. The label S4 column represents the number of the layer N of the main body 311. There are 4 layers in the main body 311, that is, N = 4, and the numbers range 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 number of each main body 311 connected in series in each phase winding, and it indicates the position of each layer of the main body 311 in each stator slot 211. Among them, the total number A of the main bodies 311 is 64, ranging from 1 to 64. The first main body 311 and the 64th main body 311 are connected to lead out the wire G5. The conductor components 310 are A / 2 pairs, that is, 32 pairs are arranged. Then the E-th main body 311 is connected to the (E - 1)-th main body 311 through the first connection wire G41, E is an even number, and the E-th main body 311 and the (E - 1)-th main body 311 are respectively located on 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 311 and the (B + 1)-th main body 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 311 and the (B + 1)-th main body 311 are connected by the interlayer connection wire G424, B < A, T is an even number, 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 32nd main body 311 and the 33rd 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 16th main body 311 and the 17th main body 311 are connected by the last-layer connection wire G422, and the 48th main body 311 and the 49th 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 on the H-th layer and the (H + 1)-th layer, 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 8th main body 311 and the 9th main body 311 are connected by the cross-layer connection wire G423, the 24th main body 311 and the 25th main body 311 are connected by the cross-layer connection wire G423, the 40th main body 311 and the 41st main body 311 are connected by the cross-layer connection wire G423, and the 56th main body 311 and the 57th 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. From Fig.13 it can be seen that the number of slots per pole per phase q = 2.

[0207] Fig.13In the embodiment, 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 short span, and the span of the inter-layer connecting wire G424 is a full span. 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 welding points, improving the welding quality and manufacturability. Fig.13 The span of the middle cross-layer connecting line G423 is short, forming a short-span winding, which can further reduce harmonics and is beneficial to suppressing rotor eddy current losses.

[0208] In another embodiment, see Fig.14 , and please also refer to Figure 6 and Figure 8 , wherein the row labeled S1 represents the magnetic poles, of which there are 8 magnetic poles, and each magnetic pole includes 6 stator slots 211. The row labeled S2 represents the number of the stator slots 211, of which there are 48 stator slots 211, numbered from J1, J2 to J48. The column labeled S3 represents the phase of the winding, Fig.14It is the U-phase winding. The label S4 column represents the number of the layer N of the main body 311. Among them, the main body 311 has 4 layers, that is, N = 4, and the numbers range 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 number of each main body 311 connected in series in each phase winding, and it indicates the position of each layer of the main body 311 in each stator slot 211. Among them, the total number A of the main bodies 311 is 64, ranging from 1 to 64. The first main body 311 and the 64th main body 311 are connected to lead out the wire G5. The conductor components 310 are A / 2 pairs, that is, 32 pairs are arranged. Then, the E-th main body 311 is connected to the (E - 1)-th main body 311 through the first connection wire G41, E is an even number, and the E-th main body 311 and the (E - 1)-th main body 311 are respectively located on 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 311 and the (B + 1)-th main body 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 311 and the (B + 1)-th main body 311 are connected by the interlayer connection wire G424, B < A, T is an even number, 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 32nd main body 311 and the 33rd 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 16th main body 311 and the 17th main body 311 are connected by the last-layer connection wire G422, and the 48th main body 311 and the 49th 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 on the H-th layer and the (H + 1)-th layer, 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 8th main body 311 and the 9th main body 311 are connected by the cross-layer connection wire G423, the 24th main body 311 and the 25th main body 311 are connected by the cross-layer connection wire G423, the 40th main body 311 and the 41st main body 311 are connected by the cross-layer connection wire G423, and the 56th main body 311 and the 57th 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. From Fig.14 It can be seen that the number of slots per pole per phase q = 2.

[0209] Fig.14In the embodiment, 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 long span, and the span of the inter-layer connecting wire G424 is a full span. 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 welding points, improving the welding quality and manufacturability. Fig.14 The span of the cross-layer connection line G423 is long, so as to facilitate the flexible layout and connection of the main body 311 of the conductor component 310 of the winding structure 30 .

[0210] In another embodiment, see Fig.15 , and please also refer to Figure 6 and Figure 8 , wherein the row labeled S1 represents the magnetic poles, of which there are 8 magnetic poles, and each magnetic pole includes 6 stator slots 211. The row labeled S2 represents the number of the stator slots 211, of which there are 48 stator slots 211, numbered from J1, J2 to J48. The column labeled S3 represents the phase of the winding, Fig.15is the U-phase winding. The label S4 column represents the number of the layer N of the main body 311. Among them, the main body 311 has 4 layers, that is, N = 4, and the numbers range from T4 to T1, with the T4 layer being the first layer and the T1 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 position of each layer of the main body 311 in each stator slot 211; among them, the total number A of the main bodies 311 is 64, from 1 to 64. The first main body 311 and the 64th main body 311 are connected to lead out the wire G5. The conductor components 310 are A / 2 pairs, that is, 32 pairs are arranged. 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 located on the M-th layer and the (M - 1)-th layer respectively, 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 located on the T-th layer and the (T - 1)-th layer respectively, B is an even number, then the B-th main body 311 and the (B + 1)-th main body 311 are connected by the interlayer 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 32nd main body 311 and the 33rd 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 16th main body 311 and the 17th main body 311 are connected by the last-layer connection wire G422, and the 48th main body 311 and the 49th 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 located on the H-th layer and the (H + 1)-th layer respectively, 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 8th main body 311 and the 9th main body 311 are connected by the cross-layer connection wire G423, the 24th main body 311 and the 25th main body 311 are connected by the cross-layer connection wire G423, the 40th main body 311 and the 41st main body 311 are connected by the cross-layer connection wire G423, and the 56th main body 311 and the 57th 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. From Fig.15 it can be seen that the number of slots per pole per phase q = 2.

[0211] Fig.15In the embodiment, 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 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 welding points, improving the welding quality and manufacturability. Fig.15 The first layer is set at the T4 layer, and the T1 layer is used as the last layer, so as to facilitate the flexible layout and connection of the main body 311 of the conductor component 310, and also facilitate the arrangement and lead-out of the lead-out wire G5.

[0212] In another embodiment, see Fig.16 , and please also refer to Figure 6 and Figure 8 , wherein the row labeled S1 represents the magnetic poles, of which there are 8 magnetic poles, and each magnetic pole includes 6 stator slots 211. The row labeled S2 represents the number of the stator slots 211, of which there are 48 stator slots 211, numbered from J1, J2 to J48. The column labeled S3 represents the phase of the winding, Fig.16is the U-phase winding. The label S4 column represents the number of the layer N of the main body 311. The main body 311 has 6 layers, that is, N = 6, and the numbers range from T1 to T6, where T1 is the first layer and T6 is the last layer. The label S5 indicates the connection sequence number of each main body 311 connected in series in each phase winding, and it indicates the position of each layer of the main body 311 in each stator slot 211. Among them, the total number A of the main bodies 311 is 96, ranging from 1 to 96. The first main body 311 and the 96th main body 311 are connected to lead out the wire G5. The conductor components 310 are A / 2 pairs, that is, 48 pairs are arranged. Then the E-th main body 311 is connected to the (E - 1)-th main body 311 through the first connection wire G41, E is an even number, and the E-th main body 311 and the (E - 1)-th main body 311 are located on the M-th layer and the (M - 1)-th layer respectively, M is an even number, M ≤ N, E ≤ A. When the B-th main body 311 and the (B + 1)-th main body 311 are located on the T-th layer and the (T - 1)-th layer respectively, 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, 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 48th main body 311 and the 49th 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 24th main body 311 and the 25th main body 311 are connected by the last-layer connection wire G422, and the 72nd main body 311 and the 73rd 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 located on the H-th layer and the (H + 1)-th layer respectively, 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 8th main body 311 and the 9th main body 311 are connected by the cross-layer connection wire G423, the 16th main body 311 and the 17th main body 311 are connected by the cross-layer connection wire G423, the 32nd main body 311 and the 33rd main body 311 are connected by the cross-layer connection wire G423, the 40th main body 311 and the 41st main body 311 are connected by the cross-layer connection wire G423, the 56th main body 311 and the 57th main body 311 are connected by the cross-layer connection wire G423, the 64th main body 311 and the 65th main body 311 are connected by the cross-layer connection wire G423, the 80th main body 311 and the 81st main body 311 are connected by the cross-layer connection wire G423, and the 88th main body 311 and the 89th 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. From Fig.16It can be seen that the number of slots per pole and per phase is q=2.

[0213] Fig.16 In the embodiment, 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 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 welding points, improving the welding quality and manufacturability. Fig.16 The number of layers of the main body 311 is set to 6 to increase the number of coil turns connected in series in the winding structure 30 to expand the power and torque range of the motor.

[0214] In another embodiment, see Fig.17 , and please also refer to Figure 6 and Figure 8 , wherein the row labeled S1 represents the magnetic poles, of which there are 8 magnetic poles, and each magnetic pole includes 6 stator slots 211. The row labeled S2 represents the number of the stator slots 211, of which there are 48 stator slots 211, numbered from J1, J2 to J48. The column labeled S3 represents the phase of the winding, Fig.17It is the U-phase winding. The label S4 column represents the serial number of the number of layers N of the main body 311. Among them, the main body 311 has 6 layers, that is, N = 6, and the serial numbers range from T1 to T6. The T1 layer is the first layer, and the T6 layer is the last layer. The label S5 indicates the connection sequence number of each main body 311 connected in series in each phase winding, and it indicates the position of each layer of the main body 311 located in each stator slot 211. Among them, the total number A of the main bodies 311 is 96, ranging from 1 to 96. The first main body 311 and the 96th main body 311 are connected to lead out the wire G5. The conductor components 310 are A / 2 pairs, that is, 48 pairs are arranged. Then the E-th main body 311 is connected to the (E - 1)-th main body 311 through the first connection wire G41, E is an even number, and the E-th main body 311 and the (E - 1)-th main body 311 are respectively located on 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 311 and the (B + 1)-th main body 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 311 and the (B + 1)-th main body 311 are connected by the interlayer connection wire G424, B < A, T is an even number, 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 48th main body 311 and the 49th 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 24th main body 311 and the 25th main body 311 are connected by the last layer connection wire G422, and the 72nd main body 311 and the 73rd 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 on the H-th layer and the (H + 1)-th layer, 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 8th main body 311 and the 9th main body 311 are connected by the cross-layer connection wire G423, the 16th main body 311 and the 17th main body 311 are connected by the cross-layer connection wire G423, the 32nd main body 311 and the 33rd main body 311 are connected by the cross-layer connection wire G423, the 40th main body 311 and the 41st main body 311 are connected by the cross-layer connection wire G423, the 56th main body 311 and the 57th main body 311 are connected by the cross-layer connection wire G423, the 64th main body 311 and the 65th main body 311 are connected by the cross-layer connection wire G423, the 80th main body 311 and the 81st main body 311 are connected by the cross-layer connection wire G423, and the 88th main body 311 and the 89th 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. By Fig.17It can be seen that the number of slots per pole and per phase is q=2.

[0215] Fig.17 In the embodiment, 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 short span, and the span of the inter-layer connecting wire G424 is a full span. 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 welding points, improving the welding quality and manufacturability. Fig.17 The number of layers of the main body 311 is set to 6 to increase the number of coil turns connected in series in the winding structure 30 to expand the power and torque range of the motor. The span of the cross-layer connecting wire G423 is short to form a short-span winding, which can further reduce harmonics and help suppress rotor eddy current losses.

[0216] In another embodiment, see Fig.18 , and please also refer to Figure 6 and Figure 8 , wherein the row labeled S1 represents the magnetic poles, of which there are 6 magnetic poles, and each magnetic pole includes 6 stator slots 211. The row labeled S2 represents the number of the stator slots 211, of which there are 36 stator slots 211, numbered from J1, J2 to J36. The column labeled S3 represents the phase of the winding, Fig.18is the U-phase winding. The label S4 column represents the number of the layer N of the main body 311. Among them, the main body 311 has 4 layers, that is, N = 4, and the numbers range 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 number of each main body 311 connected in series in each phase winding, which indicates the position of each layer of the main body 311 in each stator slot 211. Among them, the total number A of the main bodies 311 is 48, ranging from 1 to 48. The first main body 311 and the 48th main body 311 are connected to lead out the wire G5. The conductor components 310 are A / 2 pairs, that is, 24 pairs are arranged. 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 located on the M-th layer and the (M - 1)-th layer respectively, 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 located on the T-th layer and the (T - 1)-th layer respectively, 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 located on the H-th layer and the (H + 1)-th layer respectively, 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. From Fig.18 it can be seen that the number of slots per pole per phase q = 2.

[0217] Fig.18In the embodiment, 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 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 welding points, improving the welding quality and manufacturability. Fig.18 The number of the middle stator slots 211 is 36 and the number of magnetic poles is 6, so the number of motor poles and the number of stator slots 211 can be adjusted as needed to improve the application range of the winding structure 30 and expand the motor power and torque range.

[0218] In another embodiment, see Fig.19 , and please also refer to Figure 6 and Figure 8 , wherein the row labeled S1 represents the magnetic poles, of which there are 12 magnetic poles, and each magnetic pole includes 3 stator slots 211. The row labeled S2 represents the number of the stator slots 211, of which there are 36 stator slots 211, numbered from J1, J2 to J36. The column labeled S3 represents the phase of the winding, Fig.19is the U-phase winding. The label S4 column represents the number of the number of layers N of the main body 311. Among them, the main body 311 has 4 layers, that is, N = 4, and the numbers range 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 number of each main body 311 connected in series in each phase winding, and it indicates the position of each layer of the main body 311 in each stator slot 211; among them, the total number A of the main bodies 311 is 48, from 1 to 48. The first main body 311 and the 48th main body 311 are connected to lead out the wire G5. The conductor components 310 are A / 2 pairs, that is, 24 pairs are arranged. Then the E-th main body 311 is connected to the (E - 1)-th main body 311 through the first connection wire G41, E is an even number, and the E-th main body 311 and the (E - 1)-th main body 311 are respectively located on 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 311 and the (B + 1)-th main body 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 311 and the (B + 1)-th main body 311 are connected by the interlayer connection wire G424, B < A, T is an even number, T ≤ N. 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 24th main body 311 and the 25th 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 on the H-th layer and the (H + 1)-th layer, 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 12th main body 311 and the 13th main body 311 are connected by the cross-layer connection wire G423, and the 36th main body 311 and the 37th 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. From Fig.19 it can be seen that the number of slots per pole per phase q = 1.

[0219] Fig.19 Among them, the span of the first connection wire G41 is a full pitch, the span of the last layer connection wire G422 is a full pitch, the span of the cross-layer connection wire G423 is a full pitch, and the span of the interlayer connection wire G424 is a full pitch. This structure can make the first connection wire G41 preformed on the radially inner side of the winding structure 30 have the same span and the number of cross-layers, so that the radially inner side of the winding structure 30 can be arranged neatly and tightly. The radially 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. Fig.19 Among them, the stator slot 211 has 36 slots, the number of poles is 12, and the number of slots per pole per phase q is 1. Thus, the number of 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.

[0220] In another embodiment, see Fig. 20 , and please also refer to Figure 6 and Figure 8 , wherein the row labeled S1 represents the magnetic poles, of which there are 6 magnetic poles, and each magnetic pole includes 9 stator slots 211. The row labeled S2 represents the number of the stator slots 211, of which there are 54 stator slots 211, numbered from J1, J2 to J54. The column labeled S3 represents the phase of the winding, Fig. 20is the U-phase winding. The label S4 column represents the number of the number of layers N of the main body 311. Among them, the main body 311 has 4 layers, that is, N = 4, and the numbers range 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 number of each main body 311 connected in series in each phase winding, which indicates the position of each layer of the main body 311 in each stator slot 211; among them, the total number A of the main bodies 311 is 72, from 1 to 72. The first main body 311 and the 72nd main body 311 are connected to lead out the wire G5. The conductor components 310 are A / 2 pairs, that is, 36 pairs are arranged. Then the E-th main body 311 is connected to the (E - 1)-th main body 311 through the first connection wire G41, E is an even number, and the E-th main body 311 and the (E - 1)-th main body 311 are located on the M-th layer and the (M - 1)-th layer respectively, M is an even number, M ≤ N, E ≤ A. When the B-th main body 311 and the (B + 1)-th main body 311 are located on the T-th layer and the (T - 1)-th layer respectively, B is an even number, then the B-th main body 311 and the (B + 1)-th main body 311 are connected by the interlayer connection wire G424, B < A, T is an even number, 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, and the 48th main body 311 and the 49th 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, the 36th main body 311 and the 37th main body 311 are connected by the last layer connection wire G422, and the 60th main body 311 and the 61st 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 located on the H-th layer and the (H + 1)-th layer respectively, 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, the 42nd main body 311 and the 43rd main body 311 are connected by the cross-layer connection wire G423, the 54th main body 311 and the 55th main body 311 are connected by the cross-layer connection wire G423, and the 66th main body 311 and the 67th 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. By Fig. 20It can be seen that the number of slots per pole and per phase is q=3.

[0221] Fig. 20 In the embodiment, 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 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 welding points, improving the welding quality and manufacturability. Fig. 20 The number of the middle stator slots 211 is 54 and the number of magnetic poles is 6, so the number of motor magnetic poles and the number of stator slots 211 can be adjusted as needed to improve the application range of the winding structure 30 and expand the motor power and torque range.

[0222] The embodiment of the present application provides a winding structure 30, including a plurality of conductor components 310, which are arranged in a ring body 300; the conductor component 310 includes a main body 311, an inner section 312 and an outer section 313 integrally formed by flat wire, the main body 311 is arranged to extend radially along the ring body 300, the inner section 312 is connected to the radial inner end of the main body 311, and the outer section 313 is connected to the radial outer end of the main body 311; the main bodies 311 of the plurality of conductor components 310 are connected in series through a connecting wire G4, and lead wires G5 are respectively provided at both ends 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, and the conductor components 310 are arranged in pairs, and each pair of conductor components 310 is integrally formed by 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 span, which is convenient for batch molding and production to reduce costs and is also convenient for connecting 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 in one piece. In the two pairs of conductor components 310 connected in series: the two outer sections 313 in the middle are welded and connected. The annular body 300 is stacked with N layers of main body parts 311 along the axial direction, and the two main body parts 311 of each pair of conductor components 310 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. 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 the 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 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 lapped winding form, which is convenient for improving the consistency of the welding point spacing, improving the welding quality and manufacturability. In addition, the number of motor poles and the number of stator slots 211 are adjusted as needed to improve the application range of the winding structure 30 and expand the motor power and torque range.

[0223] See also Figure 6 and Figure 8 According to some embodiments of the present application, the present application also provides a stator 20, comprising a winding structure 30 as described in any of the above embodiments.

[0224] The stator 20 of the embodiment of the present application uses the above winding structure 30, which is simplified and easy to assemble and manufacture. In addition, the winding structure 30 is made of flat wire, which increases the proportion of winding coils per unit area, thereby increasing the output torque of the axial motor 100 using the stator 20.

[0225] In some embodiments, the stator 20 further includes a stator core 21 , and the stator core 21 is provided with stator slots 211 for accommodating the main body 311 of the winding structure 30 , and the main body 311 is placed in the corresponding stator slots 211 .

[0226] The stator core 21 is set, and the main body 311 is placed in the corresponding stator slot 211. This not only makes it easy to fix the main body 311 and then install 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.

[0227] In some embodiments, the stator slots 211 are disposed on one axial side of the stator core 21 ; or, the stator slots 211 are disposed on two opposite axial sides of the stator core 21 .

[0228] 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 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 .

[0229] 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 using the stator core 21 can be suitable for the axial motor 100, and the axial motor 100 is respectively provided with rotors 10 on opposite sides of its stator 20. Stator slots 211 are respectively provided on opposite sides of the stator core 21, and winding structures 30 are respectively installed on opposite sides of the stator core 21, which can also improve the integration degree.

[0230] In some embodiments, when stator slots 211 are respectively provided on opposite sides of the stator core 21, the stator slots 211 on opposite sides of the stator core 21 can be arranged at intervals, so that the portion of the stator core 21 in the middle of the axial direction forms a magnetic plate structure that separates the stator slots 211 on both sides, and the magnetic plate structure can shield the mutual influence between the magnetic fields of the winding structures 30 on both sides of the stator 20 to a certain extent, so as to improve the output torque and output efficiency of the axial motor 100 using the stator 20. In addition, the provision of the magnetic plate structure can also increase the structural strength of the stator core 21, thereby enhancing the structural strength of the stator 20.

[0231] 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 coreless stator 20 to reduce the weight of the stator 20, thereby reducing the weight of the axial motor 100 using the stator 20.

[0232] In some embodiments, when the winding structure 30 is applied in 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 winding structure 30 may be fixed and supported by the support frame to improve the structural strength of the stator 20 .

[0233] In some embodiments, when the winding structure 30 is supported by a support frame, the support frame can be manufactured separately and a mounting groove can be formed thereon to mount and fix the winding structure 30. The support frame can be manufactured from materials such as plastic, resin, and aluminum alloy.

[0234] 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.

[0235] See also Figure 2According 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.

[0236] The axial motor 100 of the embodiment of the present application uses the stator 20 of the above-mentioned embodiment, and the structure is simplified, which can reduce the cost, improve the manufacturing efficiency, and reduce the size of the axial motor 100.

[0237] In some embodiments, see Figures 2 to 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 .

[0238] The stator 20 is arranged on at least one side of the rotor 10, which can facilitate the position layout of the stator 20. The stator 20 is arranged on at least one side of the stator 20, which can facilitate the position layout of the rotor 10.

[0239] In some embodiments, see Figures 3 to 5 There are multiple rotors 10, and a stator 20 is provided between two adjacent rotors 10; and / or there are multiple stators 20, and a rotor 10 is provided between two adjacent stators 20.

[0240] By providing a plurality of rotors 10, an axial motor 100 structure of multiple rotors 10 can be realized. By providing a plurality of stators 20, an axial motor 100 structure of multiple rotors 10 can be realized.

[0241] See also Figure 1 According to some embodiments of the present application, the present application also provides a power assembly, including the stator 20 as described in any of the above embodiments; or including the axial motor 100 as described in the above embodiments.

[0242] See also Figure 1 According to some embodiments of the present application, the present application also provides an output device, including the axial motor 100 as described in any of the above embodiments; or including the powertrain as described in the above embodiments.

[0243] 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 replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate 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 at 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 comprises 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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