Slot insulation paper, stator, axial motor, electric drive assembly and driving equipment

Abstract

The invention provides slot insulation paper, a stator, an axial motor, an electric drive assembly and driving equipment. The slot insulation paper comprises a main body of which the middle part in the width direction can be bent towards one side in the thickness direction so as to be arranged in a stator slot of a stator; the first covering part is arranged at one end of the main body in the width direction and extends towards one side of the main body in the thickness direction; the second covering part is arranged at the other end of the main body in the width direction and extends towards one side of the main body in the thickness direction; the first folding part is arranged between the main body and the first covering part and extends towards the other side of the thickness direction of the main body; and the second folding part is arranged between the main body and the second covering part and extends towards the other side of the thickness direction of the main body. When the winding is installed, the slot insulation paper can automatically surround the winding, so that the assembly is convenient, and the insulativity between the winding and the slot wall of the stator slot is improved.

Description

Technical Field

[0001] The present application belongs to the field of motor technology, and more specifically, relates to a slot insulation paper, a stator, an axial motor, an electric drive assembly and a drive device. Background Art

[0002] Axial motors are gaining more and more attention due to their compact structure, high efficiency, and high power density. Insulating paper-wrapped windings are set in the stator slots of axial motors to ensure good insulation between the windings and the stator core. However, it is inconvenient to install the insulating paper-wrapped windings in the stator slots. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a slot insulation paper, a stator, an axial motor, an electric drive assembly and a drive device to solve the problem of inconvenient installation when insulating paper is provided in the stator slot of the axial motor in the related art.

[0004] In a first aspect, an embodiment of the present application provides a slot insulation paper, comprising:

[0005] The main body, the middle portion in the width direction can be bent toward one side in the thickness direction for being placed in the stator slot of the stator;

[0006] A first covering portion is provided at one end of the main body in the width direction and extends toward one side in the thickness direction of the main body;

[0007] A second covering portion is provided at the other end in the width direction of the main body and extends toward one side in the thickness direction of the main body;

[0008] A first folding portion is disposed between the main body and the first covering portion and extends toward the other side in the thickness direction of the main body;

[0009] The second folding portion is arranged between the main body and the second covering portion, and is extended toward the other side in the thickness direction of the main body.

[0010] In the technical solution of the embodiment of the present application, by respectively providing a first folding portion and a second folding portion at opposite ends of the main body, and providing a first covering portion connected to the first folding portion and a second covering portion connected to the second folding portion, when the main body is placed in the stator slot, the two ends of the main body are bent toward each other so that the winding is placed in the stator slot, and when the winding further pushes the main body into the stator slot, the first folding portion and the second folding portion are relatively close to each other so as to be attached to the opposite side walls of the stator slot, thereby driving the first covering portion and the second covering portion to be close to each other so as to be folded on one side of the winding close to the slot opening of the stator slot, so that when the winding is installed, the slot insulation paper automatically surrounds the winding to facilitate assembly and improve the insulation between the winding and the slot wall of the stator slot.

[0011] In some embodiments, the sum of the widths of the first covering portion and the second covering portion is greater than or equal to the width of the stator slot.

[0012] By setting the sum of the widths of the first covering portion and the second covering portion to be greater than or equal to the width of the stator slot, after the winding is installed in the stator slot, the first covering portion and the second covering portion can cooperate to completely cover one side of the winding close to the slot opening of the stator slot to improve the insulation performance.

[0013] In some embodiments, the difference between the sum of the widths of the first covering portion and the second covering portion and the width of the stator slot is greater than or equal to 1 mm.

[0014] Through the above solution, the overlapping length of the first covering portion and the second covering portion can be greater than or equal to 1 mm, so as to improve the insulation performance.

[0015] In some embodiments, the main body includes a first section, a second section and a bent section, the bent section is bent toward one side in the thickness direction of the main body, the bent section is used to guide the first section and the second section into the stator slot, the first section and the second section are arranged opposite to each other, the two ends of the bent section are respectively connected to the first section and the second section, the first folded portion is connected to an end of the first section away from the bent section, and the second folded portion is connected to an end of the second section away from the bent section.

[0016] Through the above solution, when inserting the main body into the stator slot, the bent section can be inserted first, and the first section and the second section can be guided to be inserted into the stator slot for installation.

[0017] In some embodiments, the curved segment is arc-shaped, or the curved segment includes a plurality of fold line segments connected in sequence.

[0018] The curved section is arranged in an arc shape, which can be easily processed and manufactured to guide the first section and the second section to enter the stator slot.

[0019] The curved section is provided with a plurality of folding line segments connected in sequence, which can be easily processed and manufactured.

[0020] In some embodiments, the curved segment includes a first subsegment and a second subsegment arranged obliquely to the first subsegment, the first subsegment is connected to the second subsegment, the first segment is connected to the first subsegment, and the second segment is connected to the second subsegment.

[0021] By providing the first sub-segment and the second sub-segment which are inclined to each other, it is convenient to manufacture and insert into the stator slot.

[0022] In some embodiments, the bending section also includes a first guide section and a second guide section, the first guide section connects the first sub-section and the first section, and the first guide section and the first sub-section are bent at an obtuse angle; the second guide section connects the second sub-section and the second section, and the second guide section and the second sub-section are bent at an obtuse angle.

[0023] A first guide segment and a second guide segment are provided. When the first sub-segment and the second sub-segment are inserted into the stator slot, the inclination angles between the first guide segment and the second guide segment and the side wall of the stator slot can be made smaller, so as to enter the stator slot and reduce scratches on the first guide segment and the second guide segment.

[0024] In some embodiments, the first sub-segment and the second sub-segment are connected by an arc segment transition.

[0025] The arc segment is provided to reduce the crease damage at the connection between the first sub-segment and the second sub-segment, so as to improve the insulation performance of the slot insulation paper.

[0026] In some embodiments, the body is a unitary structure.

[0027] The main body is formed in one piece to facilitate the manufacturing process and improve the insulation performance of the main body.

[0028] In some embodiments, the slot insulation paper is an integrally formed structure.

[0029] The slot insulation paper is formed in one piece, which can facilitate production and improve the overall insulation performance of the slot insulation paper.

[0030] In some embodiments, the first covering portion is bent and extended from one end of the first folding portion away from the main body;

[0031] And / or, the second covering portion is extended by bending from one end of the second folding portion away from the main body;

[0032] And / or, the first folding portion is bent and extended from one end of the main body;

[0033] And / or, the second folding portion is bent and extended from the other end of the main body.

[0034] One end portion of the first folded portion is bent to form a first covering portion, which is convenient for processing and manufacturing.

[0035] One end portion of the second folded portion is bent to form a second covering portion, which is convenient for processing and manufacturing.

[0036] One end of the main body is bent to form a first folded portion for easy processing and manufacturing.

[0037] The other end of the main body is bent to form a first folded portion for easy processing and manufacturing.

[0038] In some embodiments, the first folded portion is connected to the main body via an arc-shaped transition;

[0039] And / or, the second folded portion is connected to the main body via an arc-shaped transition;

[0040] And / or, the first covering portion and the first folding portion are connected via an arc-shaped transition;

[0041] And / or, the second covering portion is connected to the second folding portion via an arc-shaped transition.

[0042] The first folded portion transitions to the main body in an arc shape, which can reduce crease damage and improve the insulation performance of the slot insulation paper.

[0043] The second folded portion transitions to the main body in an arc shape, which can reduce crease damage and improve the insulation performance of the slot insulation paper.

[0044] The first covering portion transitions to the first folding portion in an arc shape, which can reduce crease damage and improve the insulation performance of the slot insulation paper.

[0045] The second covering portion transitions to the second folded portion in an arc shape, which can reduce crease damage and improve the insulation performance of the slot insulation paper.

[0046] In a second aspect, an embodiment of the present application provides a stator, comprising the slot insulation paper as described in any of the above embodiments.

[0047] In some embodiments, the stator further includes a stator core and a winding, the stator core is provided with a plurality of stator teeth, stator slots are formed between adjacent stator teeth, the winding is installed in the stator slots, slot insulation paper is placed in the stator slots, and the slot insulation paper is arranged around the winding.

[0048] By arranging slot insulation paper in the stator slot, when the winding presses the slot insulation paper into the stator slot, the slot insulation can be wound around the winding to improve the insulation performance between the winding and the slot wall of the stator slot.

[0049] In some embodiments, the stator further includes a positioning member for pressing the first covering portion and the second covering portion of the slot insulation paper, and the positioning member is installed in the stator slot.

[0050] A positioning piece is provided to press the first covering part and the second covering part, so as to position the slot insulation paper close to the slot opening of the stator slot, which can effectively prevent the first covering part and the second covering part from opening, so as to better surround the winding and improve the insulation performance.

[0051] In some embodiments, a slot for clamping the positioning member is provided on the side wall of the stator slot.

[0052] A clamping groove is arranged on the side wall of the stator slot to clamp the stator piece, so as to facilitate the installation and fixation of the positioning piece.

[0053] In a third aspect, an embodiment of the present application provides an axial motor, comprising a stator as described in the above embodiment.

[0054] In a fourth aspect, an embodiment of the present application provides an electric drive assembly, comprising an axial motor as described in the above embodiment.

[0055] In a fifth aspect, an embodiment of the present application provides a driving device, including an axial motor as described in the above embodiment; or including an electric drive assembly as described in the above embodiment.

[0056] 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

[0057] 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.

[0058] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0059] Figure 2 This is a schematic diagram of the structure of an axial motor in some embodiments of the present application;

[0060] Figure 3 It is a schematic diagram of the structure of the axial motor of some other embodiments of the present application;

[0061] Figure 4 This is a schematic diagram of the structure of an axial motor according to some other embodiments of the present application;

[0062] Figure 5 It is a structural schematic diagram of an axial motor in some other embodiments of the present application;

[0063] Figure 6 A schematic diagram of a partial structure of a stator in some embodiments of the present application;

[0064] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure along the AA line;

[0065] Figure 8 for Figure 7 Schematic diagram of the structure of the middle slot insulation paper;

[0066] Fig. 9 for Figure 8 A schematic diagram of the structure in which the bent section of slot insulation paper is inserted into the stator slot;

[0067] Fig.10 It is a structural schematic diagram of the main body of the 9-slot insulation paper being inserted into the stator slot;

[0068] Fig.11 for Figure 7 Schematic diagram of the structure in which the middle slot insulation paper and winding are installed in the stator slot;

[0069] Fig.12 This is a schematic diagram of the structure in which the positioning member of some embodiments of the present application is installed in the stator slot;

[0070] Fig.13 This is a schematic diagram of the structure of slot insulation paper according to other embodiments of the present application;

[0071] Fig.14 This is a schematic diagram of the structure of slot insulation paper according to some other embodiments of the present application;

[0072] Fig.15 This is a schematic diagram of the structure of slot insulation paper according to some other embodiments of the present application;

[0073] Fig.16 This is a schematic structural diagram of slot insulation paper according to some further embodiments of the present application.

[0074] Among them, the main marks of the drawings in the figure are:

[0075] 1000-vehicle; 1001-electric drive assembly; 100-axial motor; 200-transmission; 1002-controller; 1003-battery;

[0076] 10- rotor;

[0077] 20- stator;

[0078] 21- stator core; 210- stator slot; 211- stator tooth; 22- winding;

[0079] 23-slot insulating paper; 240-main body; 241-first section; 242-second section; 243-bend section; 2431-first subsection; 2432-second subsection; 2433-arc section; 2434-first guide section; 2435-second guide section; 2430-; 251-first covering part; 252-second covering part; 261-first folding part; 262-second folding part;

[0080] 27- positioning member;

[0081] 30-Rotation shaft. DETAILED DESCRIPTION

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] The drive structure using the motor as the power source is generally called electric drive. The motor is integrated with one or more components such as the cooling system, the speed change mechanism, and the controller to form an electric drive assembly. The electric drive assembly is also called an electric drive assembly or an electric drive device. The electric drive assembly is the main power device of the electric vehicle. The electric drive assembly is used to convert the electrical energy provided by the battery into mechanical energy to drive the electric vehicle. At present, the electric drive assembly can be divided into a centralized electric drive assembly and a distributed electric drive assembly. Among them, the centralized electric drive assembly transmits the output torque of the motor to the left and right wheels of the electric vehicle through a mechanical transmission device such as a transmission and a reducer to drive the electric vehicle to travel, while the distributed electric drive assembly usually includes at least two motors, and the output torque of each motor is transmitted to one wheel to drive the electric vehicle to travel, so that the distributed electric drive assembly can realize independent control of a single wheel of the electric vehicle. Therefore, compared with electric vehicles using centralized electric drive assemblies, electric vehicles using distributed electric drive assemblies have better maneuverability, making distributed electric drive assemblies more and more popular with automobile manufacturers.

[0093] Motors are also called electric motors. They are generally composed of two parts: a rotor and a stator. A motor is a device that converts electrical energy into mechanical energy. It uses an energized coil to generate a rotating magnetic field and acts on the rotor to form a magnetic-electrical force rotation torque. The fixed part of the motor is called the stator, and the rotating part of the motor is called the rotor. The stator drives the rotor to rotate in the motor to convert electrical energy into mechanical energy, thereby outputting torque.

[0094] In addition, in some cases, the motor does not directly output power, and a speed change mechanism is also set in the casing of the electric drive assembly. For example, in some cases where a large torque is required, a reducer is often set in the casing to increase the torque and output power through the reducer; in some cases where the driving speed requirements are low, a reducer is also used. For some cases where a higher speed is required, a speed increaser is also required to increase the output speed. In other words, a speed change mechanism is also integrated in some electric drive assemblies. The speed change mechanism, also known as the gearbox, is a mechanism used to change the speed and torque from the motor. It can fix or change the transmission ratio of the output shaft and the input shaft in stages. The speed change mechanism is composed of a speed change transmission assembly. Most transmission assemblies use ordinary gear transmission, some use planetary gear transmission, and some use belt transmission.

[0095] Motors can be divided into radial motors and axial motors. A radial motor is a motor in which the stator and rotor are arranged radially, such as a motor in which the stator is located on the outer periphery of the rotor or the rotor is located on the outer periphery of the stator, that is, a motor in which the stator is sleeved on the outer periphery of the rotor or the rotor is sleeved on the outer periphery of the stator. Axial motors are motors in which the stator and rotor are arranged axially. 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 ease of description, the side of the rotor close to the stator is defined as the stator side.

[0096] Axial motors have gained more and more attention due to their compact structure, high efficiency, and high power density. Since the stator is located on the side of the rotor, the stator generally includes a stator core and a winding. The side of the stator core is annularly arrayed with stator teeth, and stator slots are formed between adjacent stator teeth. The stator windings are arranged in the stator slots to generate an electromagnetic field.

[0097] Since windings are arranged in the stator slots, a voltage difference will be formed between the windings and the slot walls of the stator slots when the windings are working. Therefore, insulating paper needs to be arranged in the stator slots to wrap the windings so as to insulate the windings from the slot walls of the stator slots and improve the insulation performance.

[0098] The slot wall of the stator slot refers to the two opposite side walls of the stator slot and the slot bottom wall of the stator slot. The mouth of the stator slot opposite to the slot bottom is the slot opening of the stator slot. The side wall between the slot opening and the slot bottom of the stator slot is the side wall of the stator slot.

[0099] However, when the winding presses the slot insulation paper into the stator slot, the opposite ends of the slot insulation paper need to be bent and folded to wrap the winding, which makes installation inconvenient. If the folding is not done well, the insulation performance will be reduced.

[0100] Based on the above considerations, in order to solve the problem that after the winding of the axial motor presses the slot insulation paper into the stator slot, the end of the slot insulation paper needs to be folded, which causes inconvenient installation, an embodiment of the present application provides a slot insulation paper, wherein a first folding portion and a second folding portion are respectively arranged at both ends of the main body of the slot insulation paper, and a first covering portion is connected to the first folding portion, and a second covering portion is connected to the second folding portion, so that the first covering portion and the second covering portion both extend toward one side of the thickness direction of the main body, and the first folding portion and the second folding portion both extend toward the other side of the thickness direction of the main body. When the main body is bent and inserted into the stator slot, and the winding presses the main body into the stator slot, the slot wall of the stator slot and the winding jointly push the first folding portion and the second folding portion to move, thereby driving the first covering portion and the second covering portion to approach each other to overlap, so as to wrap the winding and facilitate installation.

[0101] The slot insulating paper disclosed in the embodiment of the present application can be applied to the stator of an axial motor. And 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 an electric drive assembly, a drive device, etc. as a power source. The electric drive assembly can also be applied to a drive device. The drive 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. Electric toys can include fixed or mobile electric toys, for example, game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like, and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0102] The driving 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 an electric drive assembly.

[0103] For the convenience of explanation, a driving device is provided in accordance with an embodiment of the present application, and the driving device is explained by taking a vehicle as an example.

[0104] Please refer to Figure 1 , Figure 1A 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. An electric drive assembly 1001 is provided inside the vehicle 1000, and the electric drive assembly 1001 may be provided at the bottom, head or tail of the vehicle 1000. The electric drive assembly 1001 may be used to increase the power of 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 electric drive assembly 1001, for example, to control the start, speed change and stop of the electric drive assembly 1001. The controller 1002 may also be used to control the battery 1003 to supply power to the electric drive assembly 1001, for example, for the starting, navigation and working power requirements of the vehicle 1000 during driving.

[0105] In some embodiments, the electric drive assembly 1001 includes an axial motor 100, and the axial motor 100 is used as a power source for the electric drive assembly 1001. It can be understood that the electric drive assembly 1001 is not limited to being used in the vehicle 1000, but can also be used in other devices that require power output.

[0106] In some embodiments, the electric drive assembly 1001 may further include a transmission 200, which is connected to the axial motor 100 to achieve torque change of the axial motor 100. The transmission 200 (Transmission), also known as a gearbox, is a mechanism used to change the speed and torque from the engine, and it can change the output shaft and input shaft transmission ratio in a fixed or step-by-step manner.

[0107] In some embodiments, the controller 1002 may be integrated with the axial motor 100 to form an electric drive assembly 1001 .

[0108] In some embodiments, the battery 1003 may be integrated with the axial motor 100 to form an electric drive assembly 1001 .

[0109] In some embodiments, the transmission 200 and the controller 1002 may be integrated with the axial motor 100 to form an electric drive assembly 1001 .

[0110] In some embodiments, the transmission 200, the controller 1002 and the battery 1003 may be integrated with the axial motor 100 to form an electric drive assembly 1001. Of course, the electric drive assembly 1001 may also be integrated with other structures, such as a cooling oil circuit.

[0111] See also Figure 2 , Figure 2 A schematic diagram of the structure of the axial motor 100 provided in an embodiment of the present application.

[0112] The embodiment of the present application provides an axial motor 100 , which includes a rotating shaft 30 , a stator 20 , and a rotor 10 . The rotor 10 is fixedly mounted on the rotating shaft 30 , and the stator 20 is located on a side of the rotor 10 .

[0113] The rotating shaft 30 refers to a shaft-shaped member in the axial motor 100 for outputting power. The rotating shaft 30 is fixedly connected to the rotor 10 and can rotate driven by the rotor 10 to output power.

[0114] The stator 20 and the rotating shaft 30 can rotate relative to each other, so that the stator 20 and the rotor 10 can rotate relative to each other. For example, in some embodiments, the stator 20 can be supported on the rotating shaft 30 by a bearing. In some embodiments, when the axial motor 100 includes a housing, the stator 20 can be fixed to the housing, and the stator 20 can be supported by the housing, and the rotor 10 and the rotating shaft 30 are rotatably installed in the housing, so that the stator 20 and the rotor 10 can rotate relative to each other, so that the stator 20 drives the rotor 10 to rotate.

[0115] 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 30 to rotate.

[0116] The axial direction refers to the axial direction of the rotating shaft 30 , and the axial direction of the rotating shaft 30 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 .

[0117] The radial direction refers to the radial direction of the rotating shaft 30 , and the radial direction of the rotating shaft 30 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 .

[0118] The circumferential direction refers to a direction around the axial direction of the rotating shaft 30 , which is also a direction around the axial direction of the rotor 10 .

[0119] 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.

[0120] See also Figure 3 , Figure 3 A schematic diagram of the structure of the axial motor 100 provided in an embodiment of the present application.

[0121] 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.

[0122] See also Figure 4 , Figure 4 A schematic diagram of the structure of the axial motor 100 provided in an embodiment of the present application.

[0123] 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 30 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.

[0124] See also Figure 5 , Figure 5 A schematic diagram of the structure of the axial motor 100 provided in an embodiment of the present application.

[0125] 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 the multiple rotors 10 are driven to rotate by the multiple stators 20, thereby driving the rotating shaft 30 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.

[0126] See also Figures 6 to 11 , Figure 6 It is a schematic diagram of the partial structure of the stator 20 of some embodiments of the present application. Figure 7 It is a schematic diagram of the cross-sectional structure along the AA line in the figure, in which the winding 22 only presses the main body 240 of the slot insulation paper 23 into the stator slot 210. Figure 8 This is a schematic diagram of the structure of the slot insulation paper 23 of some embodiments of the present application. Fig. 9 for Figure 8 The structure diagram shown is that the bent section 243 of the slot insulation paper 23 is inserted into the stator slot 210. Fig.10 9 is a schematic structural diagram of the main body 240 of the slot insulation paper 23 being inserted into the stator slot 210. Fig.11 for Figure 7 Schematic diagram of the structure in which the middle slot insulation paper 23 and the winding 22 are installed in the stator slot 210.

[0127] An embodiment of the present application provides a stator 20, including a stator core 21, a winding 22 and a slot insulation paper 23. The stator core 21 is provided with a plurality of stator teeth 211, and stator slots 210 are formed between adjacent stator teeth 211. The winding 22 is installed in the stator slot 210, and the slot insulation paper 23 is placed in the stator slot 210. The slot insulation paper 23 is arranged around the winding 22.

[0128] The stator core 21 is an important part of the stator 20 and mainly plays a supporting and magnetic conductive role.

[0129] The stator teeth 211 are protruding parts provided on the stator core 21 for conducting magnetic flux. Stator slots 210 are formed between adjacent stator teeth 211 , and the stator slots 210 are used to accommodate the windings 22 , that is, the windings 22 are installed in the stator slots 210 .

[0130] The winding 22 refers to a structure in which coils are arranged and connected in a certain pattern to generate an electromagnetic field when electricity is supplied.

[0131] The slot insulation paper 23 refers to an insulation paper provided in the stator slot 210 to insulate and separate the winding 22 from the slot wall of the stator slot 210. After the slot insulation paper 23 and the winding 22 are installed in the stator slot 210, the slot insulation paper 23 wraps around the winding 22 to insulate and separate the winding 22 from the slot wall of the stator slot 210. The slot insulation paper 23 can be made of paper material, and of course, can also be made of other insulation materials, such as insulating plastic sheets.

[0132] By arranging the slot insulation paper 23 in the stator slot 210 , when the winding 22 presses the slot insulation paper 23 into the stator slot 210 , the slot insulation can be wound around the winding 22 to improve the insulation performance between the winding 22 and the slot wall of the stator slot 210 .

[0133] The slot insulation paper 23 has a length direction, a width direction and a thickness direction. When in use, the length direction of the slot insulation paper 23 is consistent with the length direction of the stator slot 210. The width direction of the slot insulation paper 23 is the width direction when the slot insulation paper 23 is unfolded into a plane, and the width direction when the slot insulation paper 23 is unfolded into a plane is perpendicular to the length direction of the slot insulation paper 23. The thickness direction of the slot insulation paper 23 refers to the thickness direction when the slot insulation paper 23 is unfolded into a plane.

[0134] Since the slot insulation paper 23 is a sheet-like structure, it has two opposite sides along the thickness direction, and has two opposite surfaces, and the two opposite surfaces are respectively located on two sides of the slot insulation paper 23 in the thickness direction.

[0135] The slot insulation paper 23 has two opposite ends, which are two opposite ends along the width direction of the slot insulation paper 23 .

[0136] See also Figures 6 to 11 The embodiment of the present application provides a slot insulation paper 23, including a main body 240, the middle part of which in the width direction can be bent toward one side in the thickness direction so as to be placed in the stator slot 210 of the stator 20; a first covering portion 251, which is arranged at one end of the main body 240 in the width direction and extends toward one side in the thickness direction of the main body 240; a second covering portion 252, which is arranged at the other end of the main body 240 in the width direction and extends toward one side in the thickness direction of the main body 240; a first folding portion 261, which is arranged between the main body 240 and the first covering portion 251, and extends toward the other side in the thickness direction of the main body 240; and a second folding portion 262, which is arranged between the main body 240 and the second covering portion 252, and extends toward the other side in the thickness direction of the main body 240.

[0137] The main body 240 refers to the middle area in the width direction after the slot insulation paper 23 is unfolded. The middle part of the width direction of the main body 240 can be bent toward one side in the thickness direction for placement in the stator slot 210 of the stator 20, which means that when installed and used, the main body 240 can be bent from the middle position in the width direction to one side in the thickness direction of the main body 240 so as to be inserted into the stator slot 210. When the main body 240 is bent, it can be actively pre-bent, or it can be passively bent by the winding 22 and the side wall of the stator slot 210 being squeezed together during the process of pressing the main body 240 into the stator slot 210 through the winding 22.

[0138] When the slot insulation paper 23 is unfolded into a plane, the thickness direction of the slot insulation paper 23, the thickness direction of the main body 240, the thickness direction of the first covering part 251, the thickness direction of the second covering part 252, the thickness direction of the first folding part 261 and the thickness direction of the second folding part 262 are consistent.

[0139] The first covering portion 251 refers to an end portion of the slot insulating paper 23 in the width direction, that is, the first covering portion 251 is arranged at one end of the main body 240 in the width direction. When in use, the first covering portion 251 covers one side of the slot opening of the winding 22 close to the stator slot 210.

[0140] The first covering portion 251 is extended toward one side in the thickness direction of the main body 240 , which means that when the main body 240 is unfolded into a plane, the first covering portion 251 is extended toward one side in the thickness direction of the main body 240 .

[0141] The second covering portion 252 refers to the other end portion in the width direction of the slot insulating paper 23 , that is, the second covering portion 252 is arranged at the other end in the width direction of the main body 240 . When in use, the second covering portion 252 covers the side of the slot opening of the winding 22 close to the stator slot 210 .

[0142] The second covering portion 252 is extended toward one side in the thickness direction of the main body 240 , which means that when the main body 240 is unfolded into a planar shape, the second covering portion 252 is extended toward one side in the thickness direction of the main body 240 .

[0143] The first folded portion 261 refers to a partial area on the slot insulating paper 23 , and the first folded portion 261 is a partial area on the slot insulating paper 23 between the first covering portion 251 and the main body 240 , and the two ends of the first folded portion 261 are respectively connected to the main body 240 and the first covering portion 251 .

[0144] The first folded portion 261 is extended toward the other side of the thickness direction of the main body 240 , which means that when the main body 240 is unfolded into a planar shape, the first folded portion 261 extends toward the other side of the thickness direction of the main body 240 .

[0145] Since the first folded portion 261 is disposed between the main body 240 and the first covering portion 251, when the slot insulation paper 23 is flattened, the first covering portion 251 is extended toward one side of the thickness direction of the first folded portion 261, and the first folded portion 261 is extended toward the other side of the thickness direction of the main body 240. With this structure, when the first folded portion 261 is pressed to make the connection between the first folded portion 261 and the main body 240 flat, the first folded portion 261 drives the first covering portion 251 to tilt toward one side of the thickness direction of the main body 240 as a whole.

[0146] The second folded portion 262 refers to a partial area on the slot insulating paper 23 , and the second folded portion 262 is a partial area on the slot insulating paper 23 between the second covering portion 252 and the main body 240 , and the two ends of the second folded portion 262 are respectively connected to the main body 240 and the second covering portion 252 .

[0147] The second folded portion 262 is extended toward the other side of the thickness direction of the main body 240 , which means that when the main body 240 is unfolded into a plane, the second folded portion 262 extends toward the other side of the thickness direction of the main body 240 .

[0148] Since the second folding portion 262 is disposed between the main body 240 and the second covering portion 252, when the slot insulation paper 23 is flattened, the second covering portion 252 is extended toward one side of the second folding portion 262 in the thickness direction, and the second folding portion 262 is extended toward the other side of the thickness direction of the main body 240. With this structure, when the second folding portion 262 is squeezed to make the connection between the second folding portion 262 and the main body 240 flat, the second folding portion 262 drives the second covering portion 252 to tilt toward one side of the thickness direction of the main body 240 as a whole.

[0149] The main body 240 has two opposite sides along the thickness direction, namely a first side and a second side. The first folding portion 261 extends from one end of the main body 240 in the width direction toward the second side of the main body 240, and the second folding portion 262 extends from the other end of the main body 240 in the width direction toward the second side of the main body 240. The first covering portion 251 extends from one end of the first folding portion 261 away from the main body 240 toward the first side of the main body 240; the second covering portion 252 extends from one end of the second folding portion 262 away from the main body 240 toward the first side of the main body 240.

[0150] During use, since the middle part of the width direction of the main body 240 is bent to one side, the opposite ends of the main body 240 can be relatively close to each other so as to be inserted into the stator slot 210; the winding 22 is placed between the two ends of the main body 240 and pressed into the stator slot 210, and enters the stator slot 210 at both ends of the main body 240, and transitions to the first folded portion 261 and the second folded portion 262. In the process of the first folded portion 261 and the second folded portion 262 entering the stator slot 210, the first folded portion 261 and the second folded portion 262 will approach each other under the cooperation and extrusion of the winding 22 and the side wall of the stator slot 210, thereby driving the first covering portion 251 and the second covering portion 252 to approach each other and overlap on the side of the winding 22 close to the slot of the stator slot 210, so as to wrap the winding 22, so as to realize automatic winding of the winding 22, which is convenient to install and efficient.

[0151] In the technical solution of the embodiment of the present application, by respectively providing a first folding portion 261 and a second folding portion 262 at opposite ends of the main body 240, and providing a first covering portion 251 connected to the first folding portion 261 and a second covering portion 252 connected to the second folding portion, when the main body 240 is placed in the stator slot 210, the two ends of the main body 240 are bent toward each other so that the winding 22 is placed in the stator slot 210, and when the winding 22 further pushes the main body 240 into the stator slot 210, the first folding portion 261 and the second folding portion 262 are relatively close to each other to stick to the opposite side walls of the stator slot 210, thereby driving the first covering portion 251 and the second covering portion 252 to approach each other to fold on one side of the winding 22 close to the slot opening of the stator slot 210, so that when the winding 22 is installed, the slot insulation paper 23 automatically surrounds the winding 22 to facilitate assembly and improve the insulation between the winding 22 and the slot wall of the stator slot 210.

[0152] In some embodiments, see Figure 7 , Figure 8 and Fig.11, the sum of the widths of the first covering portion 251 and the second covering portion 252 is greater than or equal to the width of the stator slot 210. If the width of the first covering portion 251 is H1, the width of the second covering portion 252 is H2, and the width of the stator slot 210 is H3, then H1+H2≥H3.

[0153] By setting the sum of the widths of the first covering portion 251 and the second covering portion 252 to be greater than or equal to the width of the stator slot 210, after the winding 22 is installed in the stator slot 210, the first covering portion 251 and the second covering portion 252 can cooperate to completely cover the side of the winding 22 close to the slot opening of the stator slot 210 to improve the insulation performance.

[0154] In some embodiments, the difference between the sum of the widths of the first covering portion 251 and the second covering portion 252 and the width of the stator slot 210 is greater than or equal to 1 millimeter (mm). If the width of the first covering portion 251 is H1, the width of the second covering portion 252 is H2, and the width of the stator slot 210 is H3, then H1+H2-H3≥1mm. This arrangement can make the overlapping length of the first covering portion 251 and the second covering portion 252 greater than or equal to 1mm, so that the first covering portion 251 and the second covering portion 252 can better overlap and cover the side of the winding 22 close to the slot of the stator slot 210 to improve the insulation performance.

[0155] In some embodiments, see Figure 7 , Figure 8 , Fig. 9 and Fig.11 The main body 240 includes a first section 241, a second section 242 and a bent section 243. The bent section 243 is bent toward one side in the thickness direction of the main body 240. The bent section 243 is used to guide the first section 241 and the second section 242 into the stator slot 210. The first section 241 and the second section 242 are arranged opposite to each other. The two ends of the bent section 243 are respectively connected to the first section 241 and the second section 242. The first folding portion 261 is connected to one end of the first section 241 away from the bent section 243, and the second folding portion 262 is connected to one end of the second section 242 away from the bent section 243.

[0156] The first section 241 refers to a partial area at one end of the body 240 in the width direction.

[0157] The second section 242 refers to a partial area at the other end of the body 240 in the width direction.

[0158] The curved section 243 is located between the first section 241 and the second section 242 and is a partial area connecting the first section 241 and the second section 242 .

[0159] The bent section 243 is bent toward one side in the thickness direction of the main body 240, so that the first section 241 and the second section 242 are close to each other and arranged at a relative interval, so that it is convenient to insert the bent section 243 into the stator slot 210, and guide the first section 241 and the second section 242 into the stator slot 210 through the bent section 243, and it is convenient to place the winding 22 between the first section 241 and the second section 242, so as to facilitate the installation of the winding 22 in the stator slot 210 and facilitate assembly. In addition, the setting of the bent section 243 can also reduce the scratching of the bent section 243 by the side wall of the slot opening of the stator slot 210, thereby improving the insulation performance.

[0160] The first folded portion 261 is connected to the end of the first section 241 away from the curved section 243 , which means that the first section 241 is located between the curved section 243 and the first folded portion 261 , and the first folded portion 261 and the curved section 243 are connected via the first section 241 .

[0161] The second folding portion 262 is connected to the end of the second section 242 away from the curved section 243 , which means that the second section 242 is located between the curved section 243 and the second folding portion 262 , and the second folding portion 262 and the curved section 243 are connected via the second section 242 .

[0162] The first section 241 is arranged to bend and transition to the second section 242 through the bent section 243. When the main body 240 is inserted into the stator slot 210, the bent section 243 can be inserted first, and the first section 241 and the second section 242 can be guided to be inserted into the stator slot 210 for installation.

[0163] In some embodiments, the curved segment 243 includes a first subsegment 2431 and a second subsegment 2432 inclined relative to the first subsegment 2431 , the first subsegment 2431 is connected to the second subsegment 2432 , the first segment 241 is connected to the first subsegment 2431 , and the second segment 242 is connected to the second subsegment 2432 .

[0164] The first sub-segment 2431 refers to a partial area of ​​the curved segment 243 .

[0165] The second sub-segment 2432 refers to a partial area of ​​the curved segment 243 .

[0166] The first sub-segment 2431 is connected to the second sub-segment 2432 , and the first sub-segment 2431 is tilted relative to the second sub-segment 2432 to achieve a curved arrangement from the first sub-segment 2431 to the second sub-segment 2432 .

[0167] The first segment 241 is connected to the first sub-segment 2431 , which means that the first sub-segment 2431 is located between the first segment 241 and the second sub-segment 2432 , and the first sub-segment 2431 connects the first segment 241 and the second sub-segment 2432 .

[0168] The second segment 242 is connected to the second sub-segment 2432 , which means that the second sub-segment 2432 is located between the second segment 242 and the first sub-segment 2431 , and the second sub-segment 2432 connects the second segment 242 and the first sub-segment 2431 .

[0169] By providing the first sub-segment 2431 and the second sub-segment 2432 which are inclined to each other, it is convenient to manufacture and insert into the stator slot 210.

[0170] In some embodiments, see Figure 7 , Figure 8 , Fig. 9 and Fig.11 The curved section 243 also includes a first guide section 2434 and a second guide section 2435. The first guide section 2434 connects the first sub-segment 2431 and the first section 241, and the first guide section 2434 and the first sub-segment 2431 are bent at an obtuse angle; the second guide section 2435 connects the second sub-segment 2432 and the second section 242, and the second guide section 2435 and the second sub-segment 2432 are bent at an obtuse angle.

[0171] The first guiding section 2434 refers to a partial area of ​​the curved section 243 close to the first section 241 .

[0172] The first guide segment 2434 is located between the first sub-segment 2431 and the first segment 241 , and connects the first sub-segment 2431 and the first segment 241 .

[0173] The first guide segment 2434 and the first sub-segment 2431 are bent at an obtuse angle, which means that the angle between the first guide segment 2434 and the first sub-segment 2431 is an obtuse angle.

[0174] The second guiding section 2435 refers to a partial area of ​​the curved section 243 close to the second section 242 .

[0175] The second guide segment 2435 is located between the second sub-segment 2432 and the second segment 242 , and connects the second sub-segment 2432 and the second segment 242 .

[0176] The second guide segment 2435 and the second sub-segment 2432 are bent at an obtuse angle, which means that the angle between the second guide segment 2435 and the second sub-segment 2432 is an obtuse angle.

[0177] A first guide segment 2434 and a second guide segment 2435 are provided. When the first sub-segment 2431 and the second sub-segment 2432 are inserted into the stator slot 210, the inclination angles of the first guide segment 2434 and the second guide segment 2435 and the side wall of the stator slot 210 can be made smaller, so as to enter the stator slot 210 and reduce scratches on the first guide segment 2434 and the second guide segment 2435.

[0178] In some embodiments, see Figure 7, Figure 8 , Fig. 9 and Fig.11 The first sub-segment 2431 and the second sub-segment 2432 are transitionally connected via the arc segment 2433 .

[0179] The arc segment 2433 refers to a portion of the curved segment 243 located between the first sub-segment 2431 and the second sub-segment 2432. The arc segment 2433 is curved in width to form an arc shape. The two ends of the arc segment 2433 are connected to the first sub-segment 2431 and the second sub-segment 2432 respectively.

[0180] The arc segment 2433 is provided to reduce the fold damage at the connection between the first sub-segment 2431 and the second sub-segment 2432 , so as to improve the insulation performance of the slot insulation paper 23 .

[0181] In some embodiments, the body 240 is a unitary structure.

[0182] The main body 240 is an integrally formed structure, which means that the main body 240 is integrally manufactured and formed, for example, a relatively wide insulating paper can be used and formed by bending.

[0183] The main body 240 is integrally formed to facilitate processing and manufacturing, and to improve the insulation performance of the main body 240 .

[0184] In some embodiments, the various parts of the main body 240 may be fixedly connected by bonding or other methods.

[0185] In some embodiments, the slot insulation paper 23 is an integrally formed structure.

[0186] The slot insulation paper 23 is integrally formed, which means that the slot insulation paper 23 is integrally formed as a whole. For example, a larger insulation paper can be used and directly stamped.

[0187] The slot insulation paper 23 is integrally formed to facilitate manufacturing and improve the overall insulation performance of the slot insulation paper 23 .

[0188] In some embodiments, see Figure 7 , Figure 8 , Fig. 9 and Fig.11 The first covering portion 251 is formed by bending and extending the first folding portion 261 away from the main body 240 . That is, a portion of the first folding portion 261 is bent to form the first covering portion 251 .

[0189] One end of the first folded portion 261 is bent to form the first covering portion 251 , which is convenient for processing and manufacturing.

[0190] In some embodiments, the first covering portion 251 can be manufactured separately and then connected to the first folding portion 261 .

[0191] In some embodiments, the second covering portion 252 is formed by bending and extending the second folding portion 262 away from the main body 240 . That is, a portion of the second folding portion 262 is bent to form the second covering portion 252 .

[0192] One end of the second folded portion 262 is bent to form the second covering portion 252 for ease of processing and manufacturing.

[0193] In some embodiments, the second covering portion 252 can be manufactured separately and then connected to the second folding portion 262 .

[0194] In some embodiments, the first folded portion 261 is extended by bending one end of the main body 240. That is, a portion of the main body 240 is bent to form the first folded portion 261.

[0195] One end of the main body 240 is bent to form a first folded portion 261 for ease of processing and manufacturing.

[0196] In some embodiments, the first folded portion 261 can be manufactured separately and then connected to the main body 240 .

[0197] In some embodiments, the second folding portion 262 is extended by bending from the other end of the main body 240. That is, a portion of the main body 240 is bent to form the second folding portion 262.

[0198] The other end of the main body 240 is bent to form a second folded portion 262 for ease of processing and manufacturing.

[0199] In some embodiments, the second folded portion 262 can be manufactured separately and then connected to the main body 240 .

[0200] In some embodiments, the first folded portion 261 is connected to the main body 240 via an arc transition, that is, the connection between the first folded portion 261 and the main body 240 is in an arc shape. The arc transition of the first folded portion 261 to the main body 240 can reduce fold damage and improve the insulation performance of the slot insulation paper 23.

[0201] In some embodiments, the second folded portion 262 is connected to the main body 240 via an arc transition, that is, the connection between the second folded portion 262 and the main body 240 is in an arc shape. The arc transition of the second folded portion 262 to the main body 240 can reduce fold damage and improve the insulation performance of the slot insulation paper 23.

[0202] In some embodiments, the first covering portion 251 is connected to the first folding portion 261 via an arc transition, and the connection between the first covering portion 251 and the first folding portion 261 is arc-shaped. The arc transition from the first covering portion 251 to the first folding portion 261 can reduce fold damage to improve the insulation performance of the slot insulation paper 23.

[0203] In some embodiments, the second covering portion 252 is connected to the second folding portion 262 via an arc transition, and the connection between the second covering portion 252 and the second folding portion 262 is arc-shaped. The arc transition from the second covering portion 252 to the second folding portion 262 can reduce fold damage to improve the insulation performance of the slot insulation paper 23.

[0204] In some embodiments, see Figures 7 to 11 The width H1 of the first covering portion 251 can be set to be greater than the width H2 of the second covering portion 252; the width H1 of the first covering portion 251 can also be set to be less than the width H2 of the second covering portion 252; the width H1 of the first covering portion 251 can also be set to be equal to the width H2 of the second covering portion 252. The specific setting can be based on needs and is not limited here.

[0205] In some embodiments, see Figures 7 to 11 The angle between the first covering portion 251 and the first folding portion 261 is a, and the angle between the second covering portion 252 and the second folding portion 262 is b. a can be set to be greater than b, or less than b, or equal to b. The specific settings can be made as needed and are not limited here.

[0206] In some embodiments, the relative positions of the first covering portion 251 and the second covering portion 252 with respect to the winding 22 when they are overlapped are adjusted by adjusting the sizes of a and b, and adjusting H1 and H2. The adjustment can be made as needed.

[0207] In some embodiments, see Figures 7 to 11 , the angle a between the first covering portion 251 and the first folding portion 261 is in the range of 80 degrees to 120 degrees, such as 80 degrees, 90 degrees, 100 degrees, 110 degrees, 120 degrees, etc., so that the first covering portion 251 can be well moved to the side of the notch of the winding 22 close to the stator slot 210, and it is also convenient for the first covering portion 251 to overlap with the second covering portion 252. When the angle a between the first covering portion 251 and the first folding portion 261 is too small, such as less than 80 degrees, when the first folding portion 261 drives the first covering portion 251 to move toward the winding 22, it is easy to be stopped by the side of the winding 22. When the angle a between the first covering portion 251 and the first folding portion 261 is too large, such as greater than 120 degrees, after the first folding portion 261 drives the first covering portion 251 to move toward the winding 22, the first covering portion 251 and the second covering portion 252 are too wide apart, and it is difficult to overlap.

[0208] In some embodiments, see Figures 7 to 11, the angle b between the second covering portion 252 and the second folding portion 262 is in the range of 80 degrees to 120 degrees, such as 80 degrees, 90 degrees, 100 degrees, 110 degrees, 120 degrees, etc., so that the second covering portion 252 can be well moved to the side of the notch of the winding 22 close to the stator slot 210, and it is also convenient for the second covering portion 252 to overlap with the first covering portion 251. When the angle b between the second covering portion 252 and the second folding portion 262 is too small, such as less than 80 degrees, when the second folding portion 262 drives the second covering portion 252 to move toward the winding 22, it is easy to be stopped by the side of the winding 22. When the angle b between the second covering portion 252 and the second folding portion 262 is too large, such as greater than 120 degrees, after the second folding portion 262 drives the second covering portion 252 to move toward the winding 22, the second covering portion 252 and the first covering portion 251 are too wide, and it is difficult to overlap.

[0209] In some embodiments, see Figures 7 to 11 The angle m between the main body 240 and the first folded portion 261 is in the range of 90 degrees to 150 degrees, such as 90 degrees, 100 degrees, 110 degrees, 120 degrees, 130 degrees, 140 degrees, 150 degrees, etc. When the main body 240 is bent and inserted into the stator slot 210, the winding 22 can be easily installed, and when the winding 22 is pressed into the stator slot 210, it is convenient to push the first folded portion 261 into the stator slot 210, thereby reducing the resistance of the side wall of the stator slot 210 to the first folded portion 261, reducing the scratching of the first folded portion 261, and improving the insulation performance. When the angle m between the main body 240 and the first folded portion 261 is too small, such as less than 90 degrees, before the first folded portion 261 enters the stator slot 210, the angle between the first folded portion 261 and the slot wall of the stator slot 210 is too small, which makes it difficult for the first folded portion 261 to be introduced into the stator slot 210, and may even damage the first folded portion 261 due to excessive resistance. When the angle m between the main body 240 and the first folded portion 261 is too large, such as greater than 150 degrees, after the middle portion of the main body 240 in the width direction is bent and inserted into the stator slot 210, the spacing between the first covering portion 251 and the second covering portion 252 will be small, which makes it inconvenient to install the winding 22.

[0210] In some embodiments, see Figures 7 to 11The angle n between the main body 240 and the second folded portion 262 is in the range of 90 degrees to 150 degrees, such as 90 degrees, 100 degrees, 110 degrees, 120 degrees, 130 degrees, 140 degrees, 150 degrees, etc. When the main body 240 is bent and inserted into the stator slot 210, the winding 22 can be easily installed, and when the winding 22 is pressed into the stator slot 210, it is easy to push the second folded portion 262 into the stator slot 210, thereby reducing the resistance of the side wall of the stator slot 210 to the second folded portion 262, reducing the scratching of the second folded portion 262, and improving the insulation performance. When the angle n between the main body 240 and the second folded portion 262 is too small, such as less than 90 degrees, before the second folded portion 262 enters the stator slot 210, the angle between the second folded portion 262 and the slot wall of the stator slot 210 is too small, which makes it difficult for the second folded portion 262 to be introduced into the stator slot 210, and may even damage the second folded portion 262 due to excessive resistance. When the angle n between the main body 240 and the second folded portion 262 is too large, such as greater than 150 degrees, after the middle portion of the main body 240 in the width direction is bent and inserted into the stator slot 210, the spacing between the second covering portions 252 and the second covering portions 252 will be small, which makes it inconvenient to install the winding 22.

[0211] Please also read Figure 6 and Fig.12 The stator 20 of some embodiments of the present application further includes a positioning member 27 for pressing the first covering portion 251 and the second covering portion 252 of the slot insulation paper 23 , and the positioning member 27 is installed in the stator slot 210 .

[0212] The positioning member 27 is a structural member provided in the stator slot 210 and used to press the first covering portion 251 and the second covering portion 252 of the slot insulation paper 23 so as to keep the first covering portion 251 and the second covering portion 252 overlapped. The positioning member 27 can generally be made of non-magnetic and non-conductive materials such as plastic, rubber, and bakelite, which can reduce the magnetic leakage between the stator teeth 211 on the one hand, and reduce the eddy current loss on the other hand.

[0213] After the winding 22 pushes the slot insulation paper 23 into the stator slot 210, the first covering part 251 and the second covering part 252 will not completely overlap on the winding 22. At this time, the positioning member 27 is installed. Through the pressing and fixing of the positioning member 27, the first covering part 251 and the second covering part 252 can be supported on the winding 22 to better wrap the winding 22 and improve the insulation performance.

[0214] A positioning member 27 is provided to press the first covering portion 251 and the second covering portion 252, so as to position the slot insulation paper 23 close to the slot opening of the stator slot 210, which can effectively prevent the first covering portion 251 and the second covering portion 252 from tilting relative to the winding, so as to better surround the winding 22 and improve the insulation performance.

[0215] In some embodiments, the first covering portion 251 and the second covering portion 252 may be bonded together.

[0216] In some embodiments, a slot for snapping the positioning member 27 is provided on the side wall of the stator slot 210 .

[0217] The clamping slot refers to a groove structure provided on the side wall of the stator slot 210 .

[0218] A clamping groove is provided on the side wall of the stator slot 210 to clamp the stator 27 and facilitate the installation and fixation of the positioning member 27.

[0219] In some embodiments, see Fig.13 The curved segment 243 only includes a first sub-segment 2431, an arc segment 2433 and a second sub-segment 2432, and has a simple structure and is easy to manufacture.

[0220] In some embodiments, see Fig.14 The curved section 243 is in an arc shape. The curved section 243 is arranged in an arc shape, which can be easily processed and manufactured to guide the first section 241 and the second section 242 to enter the stator slot 210.

[0221] In some embodiments, see Fig.15 The curved section 243 includes a plurality of folded line segments connected in sequence. The curved section 243 is provided with a plurality of folded line segments, and the plurality of folded line segments are connected in sequence to form the curved section 243, which can be easily processed and manufactured.

[0222] In some embodiments, see Fig.16 Before use, the main body 240 can also be set in a flat plate shape to facilitate processing and manufacturing, and when stored, it can be easily stacked to reduce the occupied space.

[0223] According to some embodiments of the present application, please refer to Figures 6 to 11The slot insulating paper 23 provided in the embodiment of the present application comprises a first covering portion 251, a first folding portion 261, a main body 240, a second folding portion 262 and a second covering portion 252 connected in sequence. The first covering portion 251 is bent and extended from one end of the first folding portion 261 away from the main body 240 toward one side in the thickness direction of the main body 240. The second covering portion 252 is bent and extended from one end of the second folding portion 262 away from the main body 240 toward one side in the thickness direction of the main body 240. The first folding portion 261 is bent and extended from one end of the main body 240 toward the other side in the thickness direction of the main body 240, and the second folding portion 262 is bent and extended from the other end of the main body 240 toward the other side in the thickness direction of the main body 240. The main body 240 includes a first section 241, a second section 242 and a curved section 243. The curved section 243 is bent toward one side in the thickness direction of the main body 240. The first section 241 and the second section 242 are arranged opposite to each other. The two ends of the curved section 243 are respectively connected to the first section 241 and the second section 242. The first folding portion 261 is connected to one end of the first section 241 away from the curved section 243, and the second folding portion 262 is connected to one end of the second section 242 away from the curved section 243. When in use, after the slot insulation paper 23 is pushed into the stator slot 210 through the winding 22, the winding 22 can be automatically wound, which is convenient to install and efficient.

[0224] According to some embodiments of the present application, please refer to Figures 6 to 11 The embodiment of the present application further provides a stator 20, comprising the slot insulation paper 23 as described in any of the above embodiments. The arrangement of the slot insulation paper 23 can facilitate the assembly of the stator 20.

[0225] In some embodiments, see Figures 6 to 11 The stator 20 also includes a stator core 21 and a winding 22. Stator teeth 211 are provided on the side of the stator core 21. Stator slots 210 are formed between adjacent stator teeth 211. Slot insulation paper 23 and winding 22 are placed in the stator slots 210. The slot insulation paper 23 wraps around the winding 22 to ensure good insulation performance between the winding 22 and the slot wall of the stator slot 210.

[0226] According to some embodiments of the present application, the embodiments of the present application further provide an axial motor, comprising a stator as described in the above embodiments.

[0227] According to some embodiments of the present application, the embodiments of the present application also provide an electric drive assembly, including the axial motor as described in the above embodiments.

[0228] According to some embodiments of the present application, the embodiments of the present application further provide a driving device, including the axial motor as described in the above embodiments; or including the electric drive assembly as described in the above embodiments.

[0229] 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 slot insulation paper, characterized in that: include: The main body has a middle portion in a width direction of one side that can be bent toward one side in a thickness direction so as to be placed in a stator slot of the stator; A first covering portion is provided at one end of the main body in the width direction and extends toward one side in the thickness direction of the main body; A second covering portion is provided at the other end of the main body in the width direction and extends toward one side in the thickness direction of the main body; A first folding portion is disposed between the main body and the first covering portion and extends toward the other side of the main body in the thickness direction; The second folding portion is disposed between the main body and the second covering portion and extends toward the other side in the thickness direction of the main body.

2. The slot insulation paper according to claim 1, characterized in that: A sum of widths of the first covering portion and the second covering portion is greater than or equal to a width of the stator slot.

3. The slot insulation paper according to claim 1 or 2, characterized in that: The difference between the sum of the widths of the first covering portion and the second covering portion and the width of the stator slot is greater than or equal to 1 mm.

4. The slot insulation paper according to any one of claims 1 to 3, characterized in that: The main body includes a first section, a second section and a bent section, the bent section is bent toward one side in the thickness direction of the main body, the bent section is used to guide the first section and the second section into the stator slot, the first section and the second section are arranged opposite to each other, the two ends of the bent section are respectively connected to the first section and the second section, the first folded portion is connected to an end of the first section away from the bent section, and the second folded portion is connected to an end of the second section away from the bent section.

5. The slot insulation paper according to claim 4, characterized in that: The curved segment is arc-shaped, or the curved segment includes a plurality of broken line segments connected in sequence.

6. The slot insulation paper according to claim 4 or 5, characterized in that: The curved segment includes a first subsegment and a second subsegment arranged obliquely to the first subsegment, the first subsegment is connected to the second subsegment, the first segment is connected to the first subsegment, and the second segment is connected to the second subsegment.

7. The slot insulation paper according to claim 6, characterized in that: The bending section also includes a first guide section and a second guide section, the first guide section connects the first sub-segment and the first section, and the first guide section and the first sub-segment are bent at an obtuse angle; the second guide section connects the second sub-segment and the second section, and the second guide section and the second sub-segment are bent at an obtuse angle.

8. The slot insulation paper according to claim 6 or 7, characterized in that: The first sub-segment and the second sub-segment are connected via an arc segment transition.

9. The slot insulation paper according to any one of claims 1 to 8, characterized in that: The main body is an integrally formed structure.

10. The slot insulation paper according to any one of claims 1 to 9, characterized in that: The slot insulation paper is an integrally formed structure.

11. The slot insulation paper according to claim 10, characterized in that: The first covering portion is bent and extended from one end of the first folding portion away from the main body; And / or, the second covering portion is extended by bending from one end of the second folding portion away from the main body; And / or, the first folding portion is bent and extended from one end of the main body; And / or, the second folding portion is bent and extended from the other end of the main body.

12. The slot insulation paper according to claim 10 or 11, characterized in that: The first folding portion is connected to the main body via an arc transition; And / or, the second folded portion is connected to the main body via an arc-shaped transition; And / or, the first covering portion and the first folding portion are connected via an arc-shaped transition; And / or, the second covering portion is connected to the second folding portion via an arc-shaped transition.

13. A stator, characterized in that: The invention comprises the slot insulation paper as claimed in any one of claims 1 to 12.

14. The stator according to claim 13, characterized in that: It also includes a stator core and a winding, wherein the stator core is provided with a plurality of stator teeth, stator slots are formed between adjacent stator teeth, the winding is installed in the stator slots, the slot insulation paper is placed in the stator slots, and the slot insulation paper is arranged around the winding.

15. The stator according to claim 14, characterized in that: It also includes a positioning member for pressing the first covering portion and the second covering portion of the slot insulation paper, and the positioning member is installed in the stator slot.

16. The stator according to claim 15, characterized in that: A clamping groove for clamping the positioning member is provided on the side wall of the stator slot.

17. An axial motor, characterized in that: Comprising a stator as claimed in any one of claims 13 to 16.

18. An electric drive assembly, characterized in that: Comprising the axial motor as claimed in claim 17.

19. A driving device, characterized in that: Includes the axial motor as claimed in claim 17; or includes the electric drive assembly as claimed in claim 18.

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