Tangential flux motor and method of manufacturing the same

Abstract

The application relates to a tangential magnetic flux motor and a preparation method thereof. The tangential magnetic flux motor comprises a stator assembly, a rotor assembly and the like. The stator assembly comprises a stator winding, and the stator winding comprises a plurality of winding coils. The plurality of winding coils are arranged at intervals in the circumferential direction, and any winding coil is provided with a notch on the side close to the axis of the stator assembly. The rotor assembly comprises a rotor support and a rotor excitation component. The rotor excitation component is provided with a plurality of rotor excitation components. The plurality of rotor excitation components are rotatably arranged in the inner cavities of the plurality of winding coils in the circumferential direction. Any rotor excitation component comprises two magnetically opposite magnetic poles, and the two magnetically opposite magnetic poles of any rotor excitation component are arranged in the circumferential direction. The rotor support passes through the notch to connect the plurality of rotor excitation components. The application can improve the internal space utilization rate of the motor, meet the design requirements of the compact structure of the tangential magnetic flux motor, and guarantee the structural strength of the rotor excitation component.

Description

Technical Field

[0001] This application relates to the field of electromagnetic device technology, and in particular to a tangential flux motor and its manufacturing method. Background Technology

[0002] Permanent magnet synchronous motors can include axial flux motors and radial flux motors. The flux paths of axial and radial flux motors differ. The overall flux path of an axial flux motor typically passes through the winding structure axially, while the flux path of a radial flux motor typically passes through the winding mechanism radially. Axial and radial flux motors suffer from NVH (noise, vibration, and harshness) and efficiency losses because their flux direction is perpendicular to the motor's output torque direction. To address this, existing technologies include tangential flux motors. These motors have several winding coils arranged circumferentially on the stator. A rotor structure containing permanent magnets is arranged on both the inner and outer circumferential sides of these winding coils. The permanent magnets on both the inner and outer circumferential sides each have two radially arranged magnetic poles, and the two magnetic poles of the permanent magnets on the inner and outer circumferential sides that are close to each other have the same magnetism, forming a circumferential flux direction, i.e., tangential. In this case, the flux direction is consistent with the motor's output torque direction, thus avoiding the aforementioned NVH and efficiency loss problems. However, existing tangential flux motors require a ring of permanent magnets on both the inner and outer circumferences of several winding coils, and each of these permanent magnets needs to be radially arranged with two magnetic poles. If the permanent magnets are made too thick, it is not conducive to achieving the compact design requirements of the tangential flux motor. Conversely, if the permanent magnets are made too thin, it is difficult to guarantee their structural strength; when a high-efficiency tangential flux motor operates at relatively high speeds, the permanent magnets, as a component of the rotor structure, cannot guarantee their structural stability. Summary of the Invention

[0003] Based on this, this application provides a tangential flux motor and its manufacturing method to improve the problem that tangential flux motors in the prior art are difficult to simultaneously achieve both structural compactness and structural stability.

[0004] In a first aspect, this application provides a tangential flux motor, the tangential flux motor comprising:

[0005] A stator assembly includes a stator winding for current to pass through, the stator winding including a plurality of winding coils spaced circumferentially, and each winding coil having a notch on the side near the axis of the stator assembly.

[0006] A rotor assembly includes a rotor support and rotor excitation components. The rotor excitation components are used to generate magnetic flux. Several rotor excitation components are provided, and the several rotor excitation components are rotatably arranged in the cavities of several winding coils in the circumferential direction. Each rotor excitation component includes two magnetic poles with opposite magnetic properties, and the two magnetic poles of each rotor excitation component are arranged in the circumferential direction. The rotor support connects the several rotor excitation components through the notch.

[0007] In one embodiment, the stator winding is a single-phase winding structure, and the stator winding further includes conductive rings. Two conductive rings are provided, and the two conductive rings are respectively located on both sides of the notch. A plurality of winding coils are connected to the two conductive rings.

[0008] In one embodiment, the stator winding further includes a first electrode and a second electrode, the first electrode and the second electrode corresponding to and connected to the two conductive rings.

[0009] In one embodiment, the stator winding is a three-phase winding structure and includes three phase winding lines. The stator assembly also includes a stator support. The winding lines of the three phases are all wound on the stator support. The winding line of any phase includes several winding coils and a bridging wire. The bridging wire of any phase connects two consecutive winding coils of that phase. The bridging wire is disposed on both sides of the notch.

[0010] In one embodiment, the bridge line is configured as an arc and is arranged circumferentially along the stator assembly.

[0011] In one embodiment, the stator winding further includes a first terminal and a second terminal. The first terminal corresponds to each of the three phases and is connected to the input position of the winding line of the corresponding phase. The second terminal is connected to the output position of the winding line of each of the three phases.

[0012] In one embodiment, the two magnetic poles of two circumferentially adjacent rotor excitation components of the rotor assembly are opposite in magnetism and are close to each other at one end.

[0013] Secondly, this application provides a method for manufacturing a tangential flux motor, the method being used to manufacture a tangential flux motor, the tangential flux motor comprising:

[0014] A stator assembly includes a stator winding for current to pass through, the stator winding including a plurality of winding coils spaced circumferentially, and each winding coil having a notch on the side near the axis of the stator assembly.

[0015] A rotor assembly includes a rotor support and a rotor excitation component. The rotor excitation component is used to generate magnetic flux. Several rotor excitation components are provided, and the several rotor excitation components are rotatably arranged in the cavities of several winding coils in the circumferential direction. Each rotor excitation component includes two magnetic poles with opposite magnetic properties, and the two magnetic poles of each rotor excitation component are arranged in the circumferential direction. The rotor support connects the several rotor excitation components through the notch.

[0016] The method for manufacturing the tangential flux motor includes:

[0017] Several rotor excitation components are mounted on the rotor support to obtain the rotor assembly;

[0018] The stator assembly is obtained by placing several of the winding coils outside several of the rotor excitation components.

[0019] In one embodiment, the stator winding is a single-phase winding structure, and the stator winding further includes conductive rings. Two conductive rings are provided, and the two conductive rings are respectively provided on both sides of the notch. A plurality of winding coils are connected to the two conductive rings.

[0020] The stator assembly is obtained by arranging several of the aforementioned winding coils outside several of the aforementioned rotor excitation components, comprising:

[0021] Prepare the winding coils such that a plurality of the winding coils are sleeved outside a plurality of the rotor excitation components;

[0022] The two conductive rings are connected to the plurality of winding coils, and the two conductive rings are respectively positioned on both sides of the notch to obtain the stator assembly.

[0023] In one embodiment, the stator winding is a three-phase winding structure and includes three phase winding lines. The stator assembly also includes a stator support. The winding lines of the three phases are all wound on the stator support. The winding line of any phase includes several winding coils and a bridging wire. The bridging wire of any phase connects two consecutive winding coils of that phase. The bridging wire is disposed on both sides of the notch.

[0024] The stator assembly is obtained by arranging several of the aforementioned winding coils outside several of the aforementioned rotor excitation components, comprising:

[0025] The upper half of two consecutive winding coils of any phase and the bridging wire connecting the upper half of the two winding coils are prepared as a first winding unit, and the lower half of two consecutive winding coils of any phase and the bridging wire connecting the lower half of the two winding coils are prepared as a second winding unit.

[0026] The stator support is disposed outside several rotor excitation components;

[0027] A plurality of first winding units are sequentially arranged on the top of the stator support, and a plurality of second winding units are sequentially arranged on the bottom of the stator support. The first winding units and the second winding units are connected at positions that constitute the same winding coil to obtain the stator assembly.

[0028] This application, by arranging several winding coils of the stator assembly circumferentially, can generate a "tangential" magnetic field when current passes through the winding coils; and by also arranging the two magnetically opposite poles of several rotor excitation components of the rotor assembly tangentially, and by setting each of the several winding coils of the stator assembly to have a notch on one side near the axis of the stator assembly, allows the several rotor excitation components to be rotatably arranged in the inner cavity of the several winding coils, without having to place the rotor excitation components on the inner or outer circumference of the stator windings. This ensures the structural strength of the rotor excitation components while improving the utilization of the internal space of the motor and meeting the design requirements of a compact tangential flux motor, so that the rotor excitation components meet the usage requirements of a tangential flux motor. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the tangential flux motor provided in Embodiment 1 of this application;

[0030] Figure 2 An exploded view of the tangential flux motor provided in Embodiment 1 of this application;

[0031] Figure 3 A top view of the stator assembly of a tangential flux motor according to another embodiment of this application;

[0032] Figure 4 A schematic diagram of the magnetic field generated by the rotor assembly of the tangential flux motor provided in Embodiment 1 of this application;

[0033] Figure 5 A schematic diagram of the magnetic field generated by the stator assembly of the tangential flux motor provided in Embodiment 1 of this application;

[0034] Figure 6 This is a schematic diagram of the stator assembly of the tangential flux motor provided in Embodiment 2 of this application;

[0035] Figure 7 This is a partial schematic diagram of the stator assembly of the tangential flux motor provided in Embodiment 2 of this application;

[0036] Figure 8 A flowchart illustrating the fabrication method of the tangential flux motor provided in Embodiment 3 of this application;

[0037] Figure 9 A flowchart of step S2 in the method for preparing the tangential flux motor provided in Embodiment 3 of this application;

[0038] Figure 10 A flowchart of step S2 of the method for manufacturing a tangential flux motor provided in Embodiment 4 of this application;

[0039] Figure 11 This is a schematic diagram illustrating step S21' of the method for manufacturing a tangential flux motor according to Embodiment 4 of this application.

[0040] Figure 12 This is a schematic diagram illustrating step S23' of the method for preparing a tangential flux motor according to Embodiment 4 of this application.

[0041] Reference numerals: 100, stator assembly; 110, stator winding; 111, winding coil; 111a, first winding unit; 111b, second winding unit; 112, notch; 113, conductive ring; 114, first electrode; 115, second electrode; 116, bridge wire; 117, first terminal; 118, second terminal; 119, star-shaped copper busbar; 120, stator support; 121, support unit; 200, rotor assembly; 210, rotor excitation component; 220, rotor support; 221, rotating disk; 222, central shaft. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0043] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention.

[0044] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0045] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "lateral," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] Example 1

[0047] Embodiment 1 of this application provides a tangential flux motor, which includes:

[0048] Stator assembly 100 includes stator winding 110 for current to pass through. Stator winding 110 includes a plurality of winding coils 111. The plurality of winding coils 111 are arranged circumferentially. Each winding coil 111 has a notch 112 on the side near the axis of stator assembly 100.

[0049] The rotor assembly 200 includes a rotor support 220 and a rotor excitation component 210. The rotor excitation component 210 is used to generate magnetic flux. Several rotor excitation components 210 are provided. The several rotor excitation components 210 are rotatably arranged in the inner cavity of several winding coils 111 in the circumferential direction. Each rotor excitation component 210 includes two magnetic poles with opposite magnetic properties, and the two magnetic poles of each rotor excitation component 210 are arranged in the circumferential direction. The rotor support 220 connects the several rotor excitation components 210 through the notch 112.

[0050] like Figure 1 and Figure 2As shown in this embodiment, exemplarily illustrating, a tangential flux motor may include a rotatably configured rotor assembly 200 and a stator assembly 100 fixed relative to the rotor assembly 200, the rotor assembly 200 being disposed within the stator assembly 100. The stator assembly 100 may include a stator winding 110 for current flow, and the stator winding 110 may include a plurality of winding coils 111 arranged circumferentially along the stator assembly 100. The winding coils 111 may be made of a conductor material, such as flat copper wire. Preferably, the plurality of winding coils 111 may be arranged in a circumferential array, and each winding coil 111 may be disposed within the axial section of the stator assembly 100, wherein the axial section of the stator assembly 100 is the section passing through the axis of the stator assembly 100. When the motor is running and the excitation current passes through the winding coil 111, the excitation current can generate a magnetic field perpendicular to the current direction. The direction of the magnetic field in the cavity of the winding coil 111 is circumferential, which is the "tangential" direction referred to in this application. The excitation current can be single-phase or multi-phase, DC or AC current, which is not limited here.

[0051] like Figure 3 As shown, in some embodiments, the winding coils 111 may also be arranged at an angle to the axial section of the stator assembly 100, and the angles between the winding coils 111 and the axial section of the stator assembly 100 are the same. In this case, the magnetic field generated by the excitation current has a certain offset between the direction of the magnetic field in the cavity of the winding coils 111 and the circumferential direction, but the stator winding 110 can still meet the usage requirements.

[0052] like Figure 2 As shown, in this embodiment, each winding coil 111 has a notch 112 on the side near the axis of the stator assembly 100. The notch 112 can be located in the middle of the winding coil 111, at which time the winding coil 111 has a shape similar to "C". The notches 112 of several winding coils 111 overlap at least partially in the vertical direction to facilitate the arrangement of the rotor assembly 200.

[0053] like Figure 2As shown, the rotor assembly 200 may include a rotor support 220 and a plurality of rotor excitation components 210 disposed on the rotor support 220. The rotor support 220 may include a rotating disk 221 and a central rotating shaft 222. The central rotating shaft 222 is coaxially arranged and connected to the rotating disk 221, and is located at the center of the rotating disk 221. The plurality of rotor excitation components 210 may be disposed on the outer edge of the rotating disk 221. The rotor excitation components 210 may be embedded and snapped onto the rotating disk 221. Alternatively, the rotor excitation components 210 may be further reinforced by adhesive bonding to maintain stability. When embedded, the rotor excitation components 210 may protrude radially from the outer edge of the rotating disk 221, or may be radially disposed within the rotating disk 221.

[0054] like Figure 4 As shown, in this embodiment, each rotor excitation component 210 includes two magnetic poles with opposite magnetic properties, namely the N pole and the S pole. The two magnetic poles with opposite magnetic properties of each rotor excitation component 210 are arranged along the circumference of the rotor assembly 200, that is, the arrangement of the N pole and the S pole of each rotor excitation component 210 is also the aforementioned "tangential".

[0055] When the rotor assembly 200 is arranged, a number of rotor excitation components 210 are disposed in the inner cavity of a number of winding coils 111, and the rotor support 220 passes through the notch 112 of the number of winding coils 111 and is connected to the number of rotor excitation components 210.

[0056] like Figure 5 As shown, in this embodiment, when the motor operates as a drive motor, several winding coils 111 are energized, generating a tangential magnetic field within their inner cavities. This magnetic field exerts a tangential magnetic pull on several rotor excitation components 210 arranged within the inner cavities of the winding coils 111. This magnetic pull drives the rotor assembly 200 to rotate around its axis. By further outputting the power of the rotor assembly 200, the purpose of driving the motor can be achieved.

[0057] When the motor operates as a generator, the rotor assembly 200 rotates around its axis under the drive of an external force. The magnetic field generated by several rotor excitation components 210 can cut several winding coils 111, and further generate back electromotive force to produce current in several winding coils 111. By further outputting the current, the purpose of generating electricity can be achieved.

[0058] It is understood that by arranging several winding coils 111 of the stator assembly 100 circumferentially, a "tangential" magnetic field can be formed when current passes through the winding coils 111. Furthermore, by arranging the two magnetically opposite poles of several rotor excitation components 210 of the rotor assembly 200 tangentially, and by setting several winding coils 111 of the stator assembly 100 to have a notch 112 on one side near the axis of the stator assembly 100, several rotor excitation components 210 can be rotatably arranged in the inner cavity of several winding coils 111 without having to place the rotor excitation components 210 on the inner or outer circumference of the stator windings 110. This ensures the structural strength of the rotor excitation components 210 while improving the utilization of the internal space of the motor and meeting the design requirements of a compact tangential flux motor, so that the rotor excitation components 210 meet the usage requirements of a tangential flux motor.

[0059] Specifically, the stator winding 110 is a single-phase winding structure. The stator winding 110 also includes a conductive ring 113. There are two conductive rings 113, which are respectively located on both sides of the notch 112. Several winding coils 111 are connected to the two conductive rings 113.

[0060] like Figure 2 As shown in this embodiment, by way of example, several winding coils 111 of the stator winding 110 can be connected by conductive rings 113. In this case, the stator winding 110 can form a single-phase winding structure, and the motor is a single-phase motor. The conductive ring 113 can be a circular ring or a thin sheet structure, and it can be disposed on the inner circumference of the several winding coils 111. Two conductive rings 113 can be provided, and the two conductive rings 113 can be respectively disposed on both sides of the notch 112 of the several winding coils 111. The two ends of the notch 112 of the several winding coils can respectively abut against the opposite sides of the two conductive rings 113, and the several winding coils 111 are connected to both conductive rings 113. The several winding conductive rings 113 can be made of the same conductor material as the winding coils 111, i.e., copper, to facilitate welding and fixing the winding coils 111 to the conductive rings 113.

[0061] In this embodiment, when the motor operates as a drive motor, high and low potentials can be set at the positions of the two conductive rings 113 respectively, so that a potential difference is formed between the two conductive rings 113, causing current to flow in the winding coils 111, thereby driving the rotor assembly 200 to rotate. When the motor operates as a generator, after the rotor assembly 200 rotates and current is generated in several winding coils 111, the conductive rings 113 can further concentrate the current for output.

[0062] It is understood that in this embodiment, when the two ends of the notches 112 of several winding coils 111 are connected by two conductive rings 113, the winding structure can be made into a single-phase winding structure to meet the requirements of the motor as a single-phase motor.

[0063] More specifically, the stator winding 110 also includes a first electrode 114 and a second electrode 115, which correspond one-to-one with and are connected to two conductive rings 113.

[0064] like Figure 1 and Figure 2 As shown in this embodiment, by way of example, the first electrode 114 and the second electrode 115 are used to further output the current concentrated in the conductive ring 113, or to concentrate the current input to the conductive ring 113. The first electrode 114 and the second electrode 115 correspond one-to-one with the two conductive rings 113, and the first electrode 114 and the second electrode 115 are connected to their corresponding conductive rings 113. The conductive rings 113 corresponding to the first electrode 114 and the second electrode 115 can be integrally formed, or they can be separately formed and assembled; this embodiment takes the former as an example. The first electrode 114 and the second electrode 115 can each be set in several equal intervals along the circumference of the conductive ring 113, such as two, four, or five; this embodiment takes three as an example.

[0065] It is understood that, by setting a first electrode 114 and a second electrode 115 that correspond one-to-one with and are connected to the two conductive rings 113, this embodiment facilitates the further output of the current concentrated in the conductive rings 113, and facilitates the concentrated input of current into the conductive rings 113.

[0066] like Figure 2 As shown, in this embodiment, the stator assembly 100 may further include a stator support 120. The stator support 120 may be configured with a cylindrical structure with a cross-section also in the shape of a "C". Several winding coils 111 can be sleeved on the stator support 120 to further improve the structural stability of the stator windings 110. Of course, in some embodiments, several winding coils 111 can be supported by conductive rings 113 without the stator support 120. When the rotor support 220 is connected to several rotor excitation components 210, it passes through the notches 112 of several winding coils 111 and the "C"-shaped opening of the stator support 120.

[0067] Specifically, the two magnetic poles of two circumferentially adjacent rotor excitation components 210 of rotor assembly 200 that are close to each other at one end have opposite magnetic properties.

[0068] like Figure 4As shown in this embodiment, by way of example, when two rotor excitation components 210 are adjacent to each other along the circumferential direction of the rotor assembly 200, the magnetism of the two magnetic poles at their closest ends can be set to opposite. For example, in the counterclockwise direction along the circumference of the rotor assembly 200, in two adjacent rotor excitation components 210, the first rotor excitation component 210 can be set to S pole and N pole in sequence, while the second rotor excitation component 210 can be set to N pole and S pole in sequence.

[0069] It is understood that, in this embodiment, by setting the two magnetic poles of two circumferentially adjacent rotor excitation components 210 close to each other at one end to have opposite magnetic properties, the magnetic field formed by the several rotor excitation components 210 of the rotor assembly 200 can be more easily distributed at the location of the several winding coils 111 of the stator assembly 100, thereby improving the electromagnetic induction effect of the motor.

[0070] The implementation principle of the tangential flux motor provided in Embodiment 1 of this application is as follows:

[0071] When the motor operates as a drive motor, several winding coils 111 are energized, generating a tangential magnetic field within their inner cavities. This magnetic field exerts a tangential magnetic pull on several rotor excitation components 210 arranged within the inner cavities of the winding coils 111. This magnetic pull drives the rotor assembly 200 to rotate around its axis. By further outputting the power from the rotor assembly 200, the purpose of driving the motor can be achieved.

[0072] When the motor operates as a generator, the rotor assembly 200 rotates around its axis under the drive of an external force. The magnetic field generated by several rotor excitation components 210 can cut several winding coils 111, and further generate back electromotive force to produce current in several winding coils 111. By further outputting the current, the purpose of generating electricity can be achieved.

[0073] This application, by arranging a plurality of winding coils 111 of the stator assembly 100 circumferentially spaced, can generate a "tangential" magnetic field when current passes through the winding coils 111. Furthermore, by arranging the two magnetically opposite poles of a plurality of rotor excitation components 210 of the rotor assembly 200 also tangentially, and by configuring each of the plurality of winding coils 111 of the stator assembly 100 to have a notch 112 on one side near the axis of the stator assembly 100, the plurality of rotor excitation components 210 can be rotatably disposed within the cavities of the plurality of winding coils 111, without needing to place the rotor excitation components 210 on the inner or outer circumference of the stator windings 110. This ensures the structural strength of the rotor excitation components 210 while improving the utilization of the internal space of the motor and meeting the design requirements of a compact tangential flux motor, thus enabling the rotor excitation components 210 to meet the usage requirements of a tangential flux motor.

[0074] Example 2

[0075] This application provides a tangential flux motor in embodiment two. The difference between this embodiment and embodiment one is at least in the stator winding 110.

[0076] Specifically, the stator winding 110 is a three-phase winding structure and includes three phase winding lines. The stator assembly 100 also includes a stator support 120. The winding lines of the three phases are all wound on the stator support 120. The winding line of any phase includes several winding coils 111 and a bridging wire 116. The bridging wire 116 of any phase connects two consecutive winding coils 111 of that phase. The bridging wire 116 is set on both sides of the notch 112.

[0077] like Figure 6 and Figure 7 As shown in this embodiment, by way of example, the stator winding 110 can be divided into three groups of winding coils 111. Each group of winding coils 111 can be used as the winding circuit for a single-phase winding structure, so that the stator winding 110 constitutes a three-phase winding structure, and the motor is a three-phase motor. In the winding circuit of any phase, two consecutive winding coils 111 can be connected by a bridging wire 116. The bridging wire 116 can be made of the same material as the winding coils 111, and each bridging wire 116 is provided with notches 112 on both sides.

[0078] like Figure 7 As shown, the three phases of the stator winding 110 can be phase U, phase V, and phase W. In this embodiment, the winding circuits of the three phases are described using the example of each phase having only one winding branch.

[0079] Along the circumference of the stator assembly 100, the winding coil 111 representing the U phase, the winding coil 111 representing the V phase, and the winding coil 111 representing the W phase can be arranged sequentially at intervals. Based on this, between the two winding coils 111 representing the U phase that are arranged consecutively, there are two other winding coils 111, namely one winding coil 111 representing the V phase and one winding coil 111 representing the W phase. Assuming the bottom end of the notch 112 at the first U-phase winding coil 111 is the entry point, when the U-phase winding circuit is wound sequentially from the first U-phase winding coil 111 to the second U-phase winding coil 111, the third U-phase winding coil 111, and so on, the two ends of the bridging wire 116 connecting the first and second U-phase winding coils 111 are connected to the top end of the notch 112 at the first and second U-phase winding coils 111, respectively. Subsequently, the two ends of the bridging wire 116 connecting the second and third U-phase winding coils 111 are connected to the bottom end of the notch 112 at the second and third U-phase winding coils 111, respectively. The same principle applies to subsequent winding circuits. The winding circuits for the V and W phases are also handled similarly.

[0080] like Figure 7 As shown, it should be noted that if the bridging wire 116 connecting the two U-phase winding coils 111 interferes with the V-phase winding coil 111 or the W-phase winding coil 111 during its extension, the bridging wire 116 can be biased inward along the radial direction of the stator assembly 100 so that the bridging wire 116 can cross the V-phase winding coil 111 or the W-phase winding coil 111, thereby avoiding a short circuit in the three-phase circuit; the same applies to the bridging wire 116 connecting the two V-phase winding coils 111 or the W-phase winding coil 111. Meanwhile, the bridging wires 116 connecting the two U-phase winding coils 111, the two V-phase winding coils 111, and the two W-phase winding coils 111 can be set at different positions along the axial direction of the stator assembly 100 to avoid interference by staggered setting. At this time, the gaps 112 of the U-phase winding coils 111, V-phase winding coils 111, and W-phase winding coils 111 are of different sizes.

[0081] In some embodiments, the winding circuit of any phase may also include several winding branches connected in parallel. For example, each phase may include two, three, or four winding branches connected in parallel. In this case, any winding branch is the same as the winding circuit of any phase in this embodiment. After all the winding branches are wound, several winding branches of the same phase are connected in parallel through the phase copper busbar.

[0082] like Figure 6As shown, in this embodiment, the stator winding 110 can be wound on the stator support 120 to keep the stator winding 110 stable. The stator support 120 in this embodiment can adopt the same structure as the stator support 120 in Embodiment 1, and will not be described in detail here.

[0083] It is understood that in this embodiment, by dividing several winding coils 111 into three groups to be used as winding lines for three phases respectively, and by connecting two consecutive winding coils 111 of the same phase through a bridge wire 116, and by setting the bridge wire 116 on both sides of the gap 112, the winding structure can be made into a three-phase winding structure to meet the requirements of the motor as a three-phase motor.

[0084] More specifically, the bridge line 116 is configured as an arc and is arranged circumferentially along the stator assembly 100.

[0085] like Figure 7 As shown in this embodiment, it is illustrated by way of example that since a plurality of winding coils 111 are arranged at circumferential intervals along the stator assembly 100, the bridge wire 116 connecting two winding coils 111 can also extend circumferentially and be arranged in an arc shape.

[0086] Of course, in some embodiments, the bridging line 116 can also be set as a straight line.

[0087] More specifically, the stator winding 110 also includes a first terminal 117 and a second terminal 118. The first terminal 117 corresponds to each of the three phases and is connected to the input position of the winding line of the corresponding phase. The second terminal 118 is connected to the output position of the winding line of the three phases.

[0088] like Figure 7 As shown in this embodiment, by way of example, the first terminal 117 and the second terminal 118 can be configured with similar structures, both of which can be connected by welding. There can be three first terminals 117, each corresponding to one of the three phases of the stator assembly 100. The first terminal 117 is connected to the input position of the winding line of its corresponding phase, that is, connected to the first winding coil 111 of that phase's winding line. Since the winding line of any phase of the stator winding 110 in this embodiment only includes one winding branch, the first terminal 117 corresponding to U can be connected to the first winding coil 111 of phase U, and its connection position can be the bottom of the notch 112 of the first winding coil 111 of phase U. The same applies to the first terminals 117 corresponding to phases V and W.

[0089] In some embodiments, when the winding line of any phase of the stator winding 110 includes several winding branches, the input positions of the several winding branches are all connected to the first terminal 117. In this case, the phase copper busbar can be connected to the first winding coil 111 of the several winding branches first, and then the first terminal 117 can be connected to the phase copper busbar.

[0090] like Figure 7 As shown, in this embodiment, the second terminal 118 can be configured as a single unit, which is connected to the output positions of the three phase winding circuits, that is, connected to the last winding coil 111 of the three phase winding circuits. In this case, the star copper busbar 119 can be connected to the last winding coil 111 of the three phase winding circuits first, and then the second terminal 118 can be connected to the star copper busbar 119.

[0091] It is understood that this embodiment facilitates the input of current into the three-phase winding structure and the output of current from the three-phase winding structure by setting the first terminal 117 and the second terminal 118.

[0092] The implementation principle of the tangential flux motor provided in Embodiment 2 of this application is basically the same as that in Embodiment 1.

[0093] Example 3

[0094] Embodiment 3 of this application provides a method for manufacturing a tangential flux motor. The method for manufacturing a tangential flux motor includes:

[0095] Stator assembly 100 includes stator winding 110 for current to pass through. Stator winding 110 includes a plurality of winding coils 111. The plurality of winding coils 111 are arranged circumferentially. Each winding coil 111 has a notch 112 on the side near the axis of stator assembly 100.

[0096] The rotor assembly 200 includes a rotor support 220 and a rotor excitation component 210. The rotor excitation component 210 is used to generate magnetic flux. Several rotor excitation components 210 are provided. The several rotor excitation components 210 are rotatably arranged in the inner cavity of several winding coils 111 in the circumferential direction. Each rotor excitation component 210 includes two magnetic poles with opposite magnetic properties. The two magnetic poles of each rotor excitation component 210 are arranged in the circumferential direction. The rotor support 220 passes through the notch 112 and connects the several rotor excitation components 210.

[0097] The fabrication method of a tangential flux motor includes the following steps:

[0098] S1. Several rotor excitation components 210 are arranged on the rotor support 220 to obtain the rotor assembly 200;

[0099] S2. Several winding coils 111 are arranged outside several rotor excitation components 210 to obtain stator assembly 100.

[0100] like Figure 2 and Figure 8 As shown in this embodiment, by way of example, in step S1, the rotor support 220 can be manufactured by casting. It can include a rotating disk 221 and a central rotating shaft 222. The central rotating shaft 222 is coaxially arranged and connected to the rotating disk 221, and is located at the center of the rotating disk 221. The outer edge of the rotating disk 221 can be provided with slots for arranging the rotor excitation components 210. Several rotor excitation components 210 can be embedded and correspondingly snapped into the slots to obtain the rotor assembly 200. When the rotor excitation components 210 are embedded in the rotating disk 221, they can also be reinforced by bonding.

[0101] like Figure 2 and Figure 8 As shown, in step S2, after the rotor assembly 200 is prepared, several winding coils 111 are placed outside several rotor excitation components 210 of the rotor assembly 200, so that the several rotor excitation components 210 can be located in the inner cavity of several winding coils 111; then the several winding coils 111 are connected to form stator windings 110 to prepare the stator assembly 100.

[0102] It is understood that this application, by rationally setting the manufacturing sequence of the rotor assembly 200 and the stator assembly 100, facilitates the arrangement of several rotor excitation components 210 of the rotor assembly 200 within the internal cavities of several winding coils 111 of the stator assembly 100, thereby manufacturing the required tangential flux motor. The tangential flux motor manufactured in this application can ensure the structural strength of the rotor excitation components 210 while improving the utilization rate of the motor's internal space and meeting the design requirements of a compact tangential flux motor structure.

[0103] More specifically, the stator winding 110 is a single-phase winding structure. The stator winding 110 also includes a conductive ring 113. There are two conductive rings 113, which are respectively located on both sides of the notch 112. Several winding coils 111 are connected to the two conductive rings 113.

[0104] A number of winding coils 111 are arranged outside a number of rotor excitation components 210 to obtain stator assembly 100 (i.e., step S2), including the following steps:

[0105] S21. Prepare winding coils 111, and make several winding coils 111 sleeved on several rotor excitation components 210;

[0106] S22. Connect the two conductive rings 113 to several winding coils 111, and arrange the two conductive rings 113 on both sides of the notch 112 to obtain the stator assembly 100.

[0107] like Figure 2 and Figure 9 As shown in this embodiment, the stator winding 110 can be a single-phase winding structure. In this case, in step S21, the winding coil 111 can be made of flat copper wire and can be wound into a "C" shape and sleeved on the outside of several rotor excitation components 210 of the rotor assembly 200. The number of winding coils 111 can be wound according to actual needs, and is not limited here.

[0108] like Figure 2 and Figure 9 As shown, in step S22, the two conductive rings 113 can be machined, and then the two conductive rings 113 are arranged on both sides of the notch 112 of several winding coils 111. The several winding coils 111 and the two conductive rings 113 are then welded and fixed to obtain the stator assembly 100.

[0109] It is understood that this embodiment facilitates the preparation of the required single-phase winding structure through a reasonable stator assembly 100 manufacturing process, thereby meeting the usage requirements of a single-phase motor.

[0110] Example 4

[0111] This application provides a method for manufacturing a tangential flux motor in embodiment four. The difference between this embodiment and embodiment three is at least in the stator assembly 100 of the tangential flux motor and the method for manufacturing the stator assembly 100.

[0112] Specifically, the stator winding 110 is a three-phase winding structure and includes three phase winding lines. The stator assembly 100 also includes a stator support 120. The winding lines of the three phases are all wound on the stator support 120. The winding line of any phase includes several winding coils 111 and a bridging wire 116. The bridging wire 116 of any phase connects two consecutive winding coils 111 of that phase. The bridging wire 116 is set on both sides of the notch 112.

[0113] A number of winding coils 111 are arranged outside a number of rotor excitation components 210 to obtain stator assembly 100 (i.e., step S2), including the following steps:

[0114] S21′, The upper half of two consecutive winding coils 111 of any phase and the bridging wire 116 connecting the upper half of the two winding coils 111 are prepared into a first winding unit 111a, and the lower half of two consecutive winding coils 111 of any phase and the bridging wire 116 connecting the lower half of the two winding coils 111 are prepared into a second winding unit 111b.

[0115] S22′, The stator support 120 is set outside several rotor excitation components 210;

[0116] S23′, Several first winding units 111a are sequentially arranged on the top of the stator support 120, and several second winding units 111b are sequentially arranged on the bottom of the stator support 120. The first winding units 111a and the second winding units 111b are connected at the positions that constitute the same winding coil 111 to obtain the stator assembly 100.

[0117] like Figure 10 and Figure 11 As shown in this embodiment, the stator winding 110 can be a three-phase winding structure. In this case, in step S21', both the first winding unit 111a and the second winding unit 111b can be wound with flat copper wire. The first winding unit 111a can be wound as the upper half of two winding coils 111 and a bridging wire 116 connecting the upper half of the two winding coils 111. The second winding unit 111b can be wound as the lower half of two winding coils 111 and a bridging wire 116 connecting the lower half of the two winding coils 111. It is easy to see that when viewed from above, the first winding unit 111a and the second winding unit 111b have a shape similar to a "U".

[0118] It should be noted that at the input and output positions of the three-phase winding circuits, that is, at the positions of the first winding coil 111 and the last winding coil 111, there is a half winding coil 111 wound separately and used as a component of the first winding unit 111a and the second winding unit 111b.

[0119] like Figure 2 and Figure 10As shown, in step S22', the stator support 120 can be configured as two opposing support units 121. The connecting surface of the two opposing support units 121 can be the cross-section of the stator support 120, and the two support units 121 can be connected by welding. During assembly, several rotor excitation components 210 of the rotor assembly 200 can be first installed into one of the support units 121, and then the other support unit 121 can be placed over the several rotor excitation components 210. Finally, the two support units 121 can be welded together to set the stator support 120 outside the several rotor excitation components 210.

[0120] like Figure 10 and Figure 12 As shown, in step S23', when the stator support 120 is completed, several first winding units 111a can be sequentially attached to the top of the stator support 120, and several second winding units 111b can be sequentially attached to the bottom of the stator support 120. Then, the first winding units 111a and second winding units 111b are connected at positions forming the same winding coil 111 to wind the stator winding 110 onto the stator support 120, thus obtaining the stator assembly 100. Similarly, the first winding units 111a and second winding units 111b can also be connected by welding.

[0121] like Figure 6 and Figure 12 As shown, it is not difficult to see that when the stator winding 110 is a three-phase winding structure, by breaking several winding coils 111 at the middle position along the axial direction on the outer periphery of the stator winding 110, several first winding units 111a and several second winding units 111b in the aforementioned step S21′ can be obtained.

[0122] It is understood that in this embodiment, the upper half of the two winding coils 111 and the bridging wire 116 connecting the upper half of the two winding coils 111 are set as the first winding unit 111a, and the lower half of the two winding coils 111 and the bridging wire 116 connecting the lower half of the two winding coils 111 are set as the second winding unit 111b, so as to facilitate the preparation of the required three-phase winding structure to meet the usage requirements of the three-phase motor.

[0123] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0124] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A tangential flux motor, characterized in that, The tangential flux motor includes: A stator assembly (100) includes a stator winding (110) for current to pass through, the stator winding (110) including a plurality of winding coils (111) arranged circumferentially, and each winding coil (111) having a notch (112) on the side near the axis of the stator assembly (100). The rotor assembly (200) includes a rotor support (220) and a rotor excitation component (210). The rotor excitation component (210) is used to generate magnetic flux. A plurality of rotor excitation components (210) are provided. The plurality of rotor excitation components (210) are rotatably disposed in the cavities of a plurality of winding coils (111) in the circumferential direction. Each rotor excitation component (210) includes two magnetic poles with opposite magnetic properties. The two magnetic poles of each rotor excitation component (210) are arranged in the circumferential direction. The rotor support (220) passes through the notch (112) to connect the plurality of rotor excitation components (210). The stator winding (110) is a three-phase winding structure and includes three phase winding lines. The stator assembly (100) also includes a stator support (120). The winding lines of the three phases are all wound on the stator support (120). The winding line of any phase includes several winding coils (111) and a bridging wire (116). The bridging wire (116) of any phase connects two consecutive winding coils (111) of that phase. The bridging wire (116) is located on both sides of the notch (112). The stator winding (110) further includes a first terminal (117) and a second terminal (118). The first terminal (117) corresponds to each of the three phases and is connected to the in-line position of the winding line of the corresponding phase. The second terminal (118) is connected to the out-line position of the winding line of the three phases.

2. The tangential flux motor according to claim 1, characterized in that, The bridge line (116) is set in an arc shape and is arranged along the circumference of the stator assembly (100).

3. A method for manufacturing a tangential flux motor, characterized in that, The method for preparing the tangential flux motor is used to prepare the tangential flux motor as described in any one of claims 1-2. The method for manufacturing the tangential flux motor includes: A plurality of the rotor excitation components (210) are disposed on the rotor support (220) to obtain the rotor assembly (200). The stator assembly (100) is obtained by placing several of the winding coils (111) outside several of the rotor excitation components (210).

4. The method for manufacturing a tangential flux motor according to claim 3, characterized in that, The stator winding (110) is a three-phase winding structure and includes three phase winding lines. The stator assembly (100) also includes a stator support (120). The winding lines of the three phases are all wound on the stator support (120). The winding line of any phase includes several winding coils (111) and a bridging wire (116). The bridging wire (116) of any phase connects two consecutive winding coils (111) of that phase. The bridging wire (116) is located on both sides of the notch (112). The stator assembly (100) is formed by arranging a plurality of the winding coils (111) outside a plurality of the rotor excitation components (210), comprising: The upper half of two consecutive winding coils (111) of any phase and the bridging wire (116) connecting the upper half of the two winding coils (111) are made into a first winding unit (111a), and the lower half of two consecutive winding coils (111) of any phase and the bridging wire (116) connecting the lower half of the two winding coils (111) are made into a second winding unit (111b). The stator support (120) is disposed outside the plurality of rotor excitation components (210); A plurality of first winding units (111a) are sequentially arranged on the top of the stator support (120), and a plurality of second winding units (111b) are sequentially arranged on the bottom of the stator support (120). The first winding units (111a) and the second winding units (111b) are connected at the position that constitutes the same winding coil (111) to obtain the stator assembly (100).

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