Electrical drive components and electrical drives

Abstract

The present application provides an electric driver component and an electric driver. The electric driver component includes: a core configured to have a ring shape and configured to have an axial direction as a symmetry axis; a plurality of pole portions distributed in a circumferential direction along the ring shape of the core and configured to extend in a radial direction; a plurality of slots formed between adjacent pole portions; and a winding including a plurality of first winding portions, a plurality of second winding portions, and a plurality of flying wires; wherein, in the winding, the first winding portions are all connected through the flying wires in a first direction along the circumferential direction, and at least part of the second winding portions are connected through the flying wires in a second direction along the circumferential direction, the second direction being opposite to the first direction; and wherein the number of the plurality of pole portions that are continuously arranged and belong to the same phase is an even number and at least four.

Description

Technical Field

[0001] This application relates to the field of motor structures. More specifically, this application relates to an electric actuator component designed to provide improved magnetic flux and performance. This application also relates to an electric drive including the aforementioned electric actuator component. Background Technology

[0002] Two-wheeled electric vehicles are typically driven by hub motors. The stator of the hub motor is attached to the hub, and the rotor is attached to the wheel. A series of poles are arranged on the outer periphery of the stator, with slots between the poles. Conductive wires are wound around the poles to form windings. The number of layers of conductive coils arranged around each pole is the same, for example, two layers. The windings around adjacent poles are spaced apart from each other. Summary of the Invention

[0003] One objective of this application is to provide an electric drive component that improves the operating efficiency of the electric drive. Another objective of this application is to provide an electric drive that includes the aforementioned electric drive component.

[0004] The objective of this application is achieved through the following technical solution:

[0005] An electric drive component includes:

[0006] The iron core is constructed in a ring shape and is symmetrical about the axial direction.

[0007] Multiple poles are distributed circumferentially along the annular shape of the iron core and are configured to extend in the radial direction;

[0008] Multiple grooves are formed between adjacent poles; and

[0009] A winding, which is arranged around each pole and located within a slot, and comprises one or more layers of coil;

[0010] The winding includes, around multiple poles arranged consecutively in the same phase, the following components:

[0011] Multiple first winding sections, each of which is wound with a first number of layers around a respective pole;

[0012] Multiple second winding portions, which form a second number of layers wrapped around the respective poles on the outer periphery of the first winding portions; and

[0013] Multiple flying wires are located at the following positions: between the first winding portion and the second winding portion, between the first winding portion and the first winding portion, and between the second winding portion and the second winding portion;

[0014] In this winding, the first winding portion is connected via a flying wire in a first direction along the circumference, and at least a portion of the second winding portion is connected via a flying wire in a second direction along the circumference, the second direction being opposite to the first direction; and

[0015] The number of consecutively arranged poles belonging to the same phase is even, and at least four.

[0016] In the aforementioned electric drive component, optionally, a second winding portion on at least one pole is electrically connected to a first winding portion on a next pole arranged in a first direction via a flying wire in a second direction, and then electrically connected to a second winding portion on the next pole via a flying wire in the first direction; and / or

[0017] The second winding portion on the third pole arranged in the first direction along the circumference is located upstream of the second winding portion on the first pole arranged in the first direction along the circumference.

[0018] In the above-described electric drive component, optionally, the first quantity is a natural number selected from 1 to 10, and the second quantity is a natural number selected from 1 to 10, wherein the second quantity is less than or equal to the first quantity.

[0019] In the above-mentioned electric drive component, optionally, the wiring direction of the winding is as follows: First, along the first direction, all 2N poles are wound sequentially to form 2N first winding portions; then, in accordance with the order of the 2N-1 and 2N poles, the 2N-3 and 2N-2 poles, etc., adjacent poles are wound in pairs to form 2N second winding portions.

[0020] Specifically, the second winding portions on adjacent poles, which are wound in pairs, are electrically connected by a flying wire in a first direction; and the second winding portions on adjacent poles, which are wound in pairs, are electrically connected by a flying wire in a second direction; and

[0021] Where N is a natural number greater than or equal to 2.

[0022] In the aforementioned electric drive component, optionally, the winding wiring direction is as follows: First, all poles except the 2Nth pole are wound sequentially along a first direction to form 2N-1 first winding portions; then, following the order of the 2N-2nd and 2N-1st poles, the 2N-4th and 2N-3rd poles, etc., adjacent poles except the 1st and 2Nth poles are wound in pairs to form 2N-2 second winding portions; then, the 1st pole is wound to form a single second winding portion; finally, the 2Nth pole is wound to sequentially form a single first winding portion and a single second winding portion.

[0023] Specifically, the second winding portions on adjacent poles, which are wound in pairs, are electrically connected by a flying wire in a first direction; and the second winding portions on adjacent poles are electrically connected by a flying wire in a second direction; furthermore, the second winding portion on the first pole is connected to the second winding portion on the third pole via a flying wire in a second direction, and is connected to the first winding portion on the 2Nth pole via a flying wire in the first direction; and

[0024] Where N is a natural number greater than or equal to 2.

[0025] In the aforementioned electric drive component, optionally, the first direction is either clockwise or counterclockwise along the circumference of the iron core.

[0026] In the aforementioned electric drive component, optionally, the winding direction of the winding around the first pole of the plurality of poles is clockwise or counterclockwise, and the winding direction of the winding around two adjacent poles is opposite.

[0027] In the aforementioned electric drive component, optionally, the poles extend radially inward or radially outward in the radial direction.

[0028] In the aforementioned electric drive component, optionally, the second winding portion extends all or part of the extension length of each pole.

[0029] In the aforementioned electric drive component, optionally, the second winding portion extends around a portion of the extension length of each pole, and the second winding portions of the windings on adjacent poles are arranged to be offset from and / or spaced apart from each other in the radial direction.

[0030] An electric actuator includes the aforementioned electric actuator components.

[0031] Optionally, in the above-mentioned electric drive, the electric drive is an electric drive for the wheel hub of a two-wheeled electric vehicle, and the electric drive component is a stator attached to the wheel hub of the two-wheeled electric vehicle, or the electric drive component is a rotor attached to the wheel of the two-wheeled electric vehicle. Attached Figure Description

[0032] The present application will be further described in detail below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will appreciate that these drawings are drawn for the purpose of explaining the preferred embodiments only and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are intended only to conceptually represent the composition or structure of the described objects and may contain exaggerated representations. The drawings are also not necessarily drawn to scale.

[0033] Figure 1 This is a cross-sectional view of an electric driver according to an embodiment of this application.

[0034] Figure 2 yes Figure 1 Front view of the iron core in the illustrated embodiment.

[0035] Figure 3 This is a partial view of the core and windings, showing the first winding method.

[0036] Figure 4 This is a partial view of the core and windings, showing the second winding method.

[0037] Figure 5 This is a partial view of the core and windings, showing a first embodiment of the winding method of the electric drive component of this application.

[0038] Figure 6 This is a partial view of the core and windings, showing a second embodiment of the winding method of the electric drive component of this application.

[0039] Figure 7 yes Figure 5 A schematic diagram of the winding routing in the embodiment shown.

[0040] Figure 8 This is a schematic diagram of the winding layout of another embodiment of the electric drive component of this application.

[0041] Figure 9 This is a partial view of the core and windings, showing a third embodiment of the winding method of the electric drive component of this application.

[0042] Figure 10 This is a partial view of the core and windings, showing a fourth embodiment of the winding method of the electric drive component of this application.

[0043] Figure 11 yes Figure 9 A schematic diagram of the winding routing in the embodiment shown.

[0044] Figure 12This is a schematic diagram of the winding layout of another embodiment of the electric drive component of this application. Detailed Implementation

[0045] Preferred embodiments of this application will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of this application.

[0046] First, it should be noted that the directional terms such as top, bottom, upward, and downward mentioned in this article are defined relative to the directions shown in the various accompanying figures. These directions are relative concepts and will therefore vary depending on their location and state. Therefore, these or other directional terms should not be construed as restrictive.

[0047] Furthermore, it should be noted that any single technical feature described or implied in the embodiments herein, or any single technical feature shown or implied in the accompanying drawings, can be further combined to obtain other embodiments not directly mentioned herein.

[0048] It should be noted that in different figures, the same reference numerals denote the same or substantially the same components.

[0049] Figure 1 This is a cross-sectional view of an electric drive according to an embodiment of this application, and Figure 2 yes Figure 1 A front view of the iron core of the illustrated embodiment. The electric actuator may include a main shaft 10 extending in the axial direction AA. For example, the main shaft 10 may be the axle of a two-wheeled electric vehicle, such as the axle of the rear wheel of a two-wheeled electric vehicle. The bracket 20 supports the iron core 100 on the main shaft 10.

[0050] Iron core 100 can be as follows Figure 2 The core 100 has a generally annular structure and may include multiple pole portions 200 extending in the radial direction RR. These pole portions are also referred to as teeth. The individual pole portions 200 may be distributed generally uniformly or non-uniformly along the circumferential direction CC of the core 100. In the illustrated embodiment, 48 pole portions 200 are arranged around the periphery of the core 100. Grooves 300 are formed between adjacent pole portions 200. These grooves are also referred to as tooth grooves.

[0051] The pole 200 can originate from the iron core 100 and extend inward or outward in the radial direction RR. Figure 2The illustrated embodiment shows the case where the electric drive component is a stator, wherein the pole portion 200 extends outward in the radial direction RR from the core 100. In one embodiment, the electric drive component can be a rotor and can be mounted on the wheel of a two-wheeled electric vehicle. In this case, the pole portion 200 can extend inward in the radial direction RR from the core 100. However, the winding arrangement of this application is not limited to a specific stator or rotor structure. For example, when the electric drive component is a stator, the pole portion can extend inward or outward in the radial direction RR. When the electric drive component is a rotor, the pole portion can also extend inward or outward in the radial direction RR.

[0052] like Figure 1 As shown, winding 400 is arranged around core 100 and may include one or more layers of coil. More specifically, winding 400 may be formed of one or more conductive wires and wound around pole 200 with radial direction RR as the center. In one embodiment, winding 400 may be arranged within slot 300 and thus form stator winding for electric drive. Pole 200 may be positioned adjacent to rotor 30, and rotor 30 may be attached to the inner circumference of wheel 40. In this way, Figure 1 The various components are provided as the main parts of the hub motor. The pole portion 200 can extend from the root to the end. The root can be defined as the bottom structure near the core 100, and the end can be defined as the terminal structure away from the core 100. In the other figures below, for clarity, the reference numerals for the winding 400 are no longer shown separately. It is readily understood that the first winding portion, the second winding portion, and the fly wire, which are described in detail below, are all part of the winding 400.

[0053] Figure 3 It is a partial view of the core and windings, showing the first winding method, and Figure 4 This is a partial view of the core and windings, showing the second winding method. Figure 3 and Figure 4 In this process, four pole sections 200 are wound as a group. These four pole sections are respectively numbered as the first pole section 201, the second pole section 202, the third pole section 203, and the fourth pole section 204. These numberings will continue to be used in the following text. It is readily understood that any four consecutive or adjacent pole sections 200 arranged around the core 100 can be used. Figure 3 and Figure 4 The winding method is illustrated in the diagram below. The other accompanying diagrams follow the same principle.

[0054] like Figure 3As shown, the winding enters from the direction of the arrow shown in A1, and winds around the first pole 201, the second pole 202, the third pole 203 and the fourth pole 204 in sequence, and finally leaves from the direction of the arrow shown in A2. Figure 1 Line segments 1, 2, and 3 (represented by circled numbers in the attached diagram) represent flywires or jumpers between different pole portions of the winding. It is readily understood that, for the first pole 201 that is first connected to the winding, the winding is wound clockwise around the first pole 201. For example, when an observer... Figure 3 When the right side faces the left first pole 201, or in other words, if... Figure 3 Main view, consider Figure 3 In the right view of the embodiment, it can be seen that the winding is wound around the first pole 201 in a clockwise direction. As shown, the winding on each pole has two layers, and the winding directions of the windings on adjacent poles are opposite.

[0055] Figure 4 Showing with Figure 3 Similar existing winding schemes. (And) Figure 3 The difference lies in the direction of winding connection and connection, as shown by arrows A1' and A2'. For the first pole 201 of the winding that is first connected, the winding is wound counterclockwise on the first pole 201, and the number of winding layers is two.

[0056] Figure 5 This is a partial view of the core and windings, showing a first embodiment of the winding method of the electric drive component of this application. Figure 6 This is a partial view of the core and windings, illustrating a second embodiment of the winding method of the electric drive component of this application. Figure 7 yes Figure 5 The schematic diagram of the winding routing in the illustrated embodiment is shown below. Figure 8 This is a schematic diagram of the winding layout of another embodiment of the electric drive component of this application. Figures 5 to 8 This illustration shows one winding method for the winding of the electric drive component of this application. Figure 5 In the middle, the winding is connected in the direction shown by arrow A3 and disconnected in the direction shown by arrow A4. Figure 7 Arrows A3 and A4 in the diagram are respectively... Figure 5 Arrows A3 and A4 correspond to each other. Furthermore, for convenience, the first pole 201, second pole 202, third pole 203, and fourth pole 204 can be considered to be distributed along the circumferential direction CC in a first direction. The first direction can be the counterclockwise direction of the circumferential direction CC, and the clockwise direction of the circumferential direction CC can be called the second direction. Figure 5In the illustrated embodiment, the winding is wound around the first pole 201 in a clockwise direction. Correspondingly, in Figure 6 In the embodiment shown, the winding is connected in the direction indicated by arrow A3' and disconnected in the direction indicated by arrow A4', and is wound around the first pole 201 in a counterclockwise direction.

[0057] The embodiments shown in this application are described using a group of four poles 200. It is readily understood that four poles 200 can constitute a pole combination for one phase of a three-phase alternating current. In embodiments not shown, it is also possible to use six, eight, or any even number of poles greater than four to form a pole combination for one phase of a three-phase alternating current.

[0058] like Figure 7 As shown, the winding can be divided into multiple parts, including multiple first winding parts 411, 412, 413 and 414, multiple second winding parts 421, 422, 423 and 424 and multiple flying wires.

[0059] The first winding portion 410 can be wound around each pole portion 200 respectively. Figure 5 and Figure 7 The reference numerals 411, 412, 413, and 414 shown represent the first winding portion 410 arranged around the first pole portion 201, the second pole portion 202, the third pole portion 203, and the fourth pole portion 204, respectively. Reference numeral 410 is... Figure 6 The diagram is schematically shown. It is readily understood that the first winding portion 410 may include first winding portions 411, 412, 413, and 414. The first winding portion 410 may be wound around the pole portion 200 in a first number of layers. For example, the first winding portion 410 may begin winding from the root of the pole portion 200 (i.e., the position where the pole portion 200 extends from the core 100) and wind to a predetermined position in the radial direction RR, thereby forming a first layer of winding. The first winding portion 410 may then continue winding from near the predetermined position in the radial direction RR toward the root of the pole portion 200, thereby forming a second layer of winding. These windings are stacked together, such that the first winding portion 410 is wound around the pole portion 200 in a first number of layers. In one embodiment, the first number may be a natural number selected from 1 to 10. In the illustrated embodiment, the first number of layers may be two layers. In one embodiment, Figure 5 The arrangement of the first winding sections 411, 412, 413, and 414 in the [structure / structure] is similar to... Figure 3 The windings in the circuits are arranged in roughly the same way, and Figure 6 The arrangement of each first winding section in the and Figure 4 The arrangement of the windings in the two circuits is roughly the same.

[0060] The second winding portion 420 can be wound around each pole portion 200 respectively. Figure 5 and Figure 7 The second winding portion 420, shown by reference numerals 421, 422, 423, and 424, is arranged around the first pole portion 201, the second pole portion 202, the third pole portion 203, and the fourth pole portion 204. Reference numeral 420 is... Figure 6 As schematically shown, and readily understood, the second winding portion 420 may include second winding portions 421, 422, 423, and 424. The second winding portion 420 may be wound around the pole portion 200 in a second number of layers. In one embodiment, the second number may be a natural number selected from 1 to 10. In the illustrated embodiment, the second number of layers may be one layer. In one embodiment, the second number may be less than the first number. In one embodiment, the second number may be less than or equal to the first number. The first winding portion 410 may occupy as much of the number of turns wound around the pole portion 200 as possible, and the second winding portion 420 may occupy as little of the number of turns wound around the pole portion 200 as possible.

[0061] The flying wire 500 can be arranged in the following positions: between the first winding portion 410 and the second winding portion 420, between the first winding portion 410 and the second winding portion 420, and between the second winding portion 420 and the second winding portion 420. Figure 5 and Figure 7 The circled numbers 1 to 7 represent different types of fly wire 500. It is easy to understand that fly wire 500 forms an electrical connection between the various winding sections or coils.

[0062] Figure 7 The wiring direction of the winding is visually demonstrated: First, along the first direction of the circumferential direction CC ( Figure 7 To the right of the middle, or rather, Figure 5 (In the counterclockwise direction), the windings are sequentially wound around the first pole portion 201, the second pole portion 202, the third pole portion 203, and the fourth pole portion 204 to form the first winding portions 411, 412, 413, and 414. Then, following the order of the third pole portion 203 and the fourth pole portion 204, and the first pole portion 201 and the second pole portion 202, adjacent pole portions 200 are wound in pairs to form the second winding portions 423, 424, 421, and 422.

[0063] Figure 8 This visually illustrates the wiring direction of a winding in a generalized embodiment. (Compared to...) Figure 7 Compared to the previous embodiment, Figure 8 The embodiments include six poles. Figure 8 The winding wiring method from the third pole section to the sixth pole section and Figure 7The first pole portion 201, the second pole portion 202, the third pole portion 203, and the fourth pole portion 204 are identical. Therefore, the winding wiring method of this application can be extended as follows: First, along the first direction, all 2N pole portions are wound sequentially to form 2N first winding portions 410; then, following the sequence of the 2N-1th pole portion with the 2Nth pole portion, the 2N-3rd pole portion with the 2N-2nd pole portion, and so on, adjacent pole portions are wound sequentially in pairs to form 2N second winding portions 420.

[0064] observe Figure 7 and Figure 8 Furthermore, the following pattern can be observed: Between the second winding portions on adjacent poles that are wound in pairs (e.g., between second winding portions 423 and 424, and between second winding portions 421 and 422), they are electrically connected by flying wires in a first direction, for example, by flying wires represented by the circled numbers 5 and 7. As another example, between the second winding portions on adjacent poles (e.g., between second winding portions 424 and 421), they are electrically connected by flying wires in a second direction (…). Figure 7 To the left in the middle, or rather, Figure 5 The fly wires are electrically connected in the clockwise direction. For example, they are connected by the fly wire represented by the circled number 6. In addition, between the first winding portion 414 on the last pole (fourth pole 204) in the first direction CC and the second winding portion 423 on the adjacent pole (third pole 203), a fly wire extending in the second direction is arranged, for example, by the fly wire represented by the circled number 4.

[0065] In the above description of mathematical rules, N can be a natural number greater than or equal to 2.

[0066] In addition, refer to Figure 7 Arrow A3 can be considered as the upstream of the winding, and arrow A4 as the downstream of the winding. The first winding portions 411, 412, 413, and 414, and the second winding portions 423, 424, 421, and 422 are formed sequentially along the winding from upstream to downstream. In this case, the second winding portion 423 on the third pole (third pole 203) arranged in the first direction of the circumferential direction CC is located upstream of the second winding portion 421 on the first pole (first pole 201) arranged in the first direction of the circumferential direction CC.

[0067] Furthermore, for each of the second winding portions 420, they may extend in whole or in part along the extension length of the pole portion 200 (from the root to the end). Figure 5 and Figure 6 In the embodiment shown, the second winding portions 420 on adjacent pole portions 200 are arranged offset from or spaced apart from each other in the extension length of the pole portions 200.

[0068] By adopting Figures 5 to 8 In the illustrated embodiment, the winding can occupy a larger cross-sectional area in slot 300, thereby increasing the slot fill factor. Furthermore, the increased number of turns of the winding around pole 200 increases the magnetic flux and consequently improves the overall operating efficiency of the electric actuator.

[0069] Figure 9 This is a partial view of the core and windings, showing a third embodiment of the winding method of the electric drive component of this application. Figure 10 This is a partial view of the core and windings, illustrating a fourth embodiment of the winding method of the electric drive component of this application. Figure 11 yes Figure 9 The schematic diagram of the winding routing in the illustrated embodiment is shown below. Figure 12 This is a schematic diagram of the winding layout of another embodiment of the electric drive component of this application. Figures 9 to 12 This demonstrates another winding method for the windings of the electric drive component of this application. Figure 9 In the middle, the winding is connected in the direction shown by arrow A5 and disconnected in the direction shown by arrow A6. Figure 11 Arrows A5 and A6 in the diagram are respectively... Figure 9 Arrows A5 and A6 correspond to each other. Furthermore, for convenience, the first pole portion 201, the second pole portion 202, the third pole portion 203, and the fourth pole portion 204 can be considered to be distributed along the circumferential direction CC in a first direction. The first direction can be the counterclockwise direction of the circumferential direction CC, and the clockwise direction of the circumferential direction CC can be called the second direction. Figure 9 In the illustrated embodiment, the winding is wound around the first pole 201 in a clockwise direction. Correspondingly, in Figure 10 In the embodiment shown, the winding is connected in the direction indicated by arrow A5' and disconnected in the direction indicated by arrow A6', and is wound around the first pole 201 in a counterclockwise direction.

[0070] For clarity, reference numeral 410' is used in Figure 10 The diagram is schematically shown. It is readily understood that the first winding portion 410' may include first winding portions 411', 412', 413', and 414' (e.g., ...). Figure 11 (As shown). Similarly, reference numeral 420' in Figure 10 As schematically shown, it is readily understood that the second winding portion 420' may include second winding portions 421', 422', 423', and 424' (e.g., Figure 11 (As shown).

[0071] The embodiments shown in this application are described using a group of four poles 200. It is readily understood that four poles 200 can constitute a pole combination for one phase of a three-phase alternating current. In embodiments not shown, it is also possible to use six, eight, or any even number of poles greater than four to form a pole combination for one phase of a three-phase alternating current.

[0072] and Figures 5 to 8 Similar to other embodiments, the winding may also include multiple first winding portions, multiple second winding portions, and multiple fly wires. The configuration of the winding portions and fly wires is similar in various embodiments, and therefore will not be described again.

[0073] Figure 11 and Figure 12 This demonstrates the wiring direction of the winding: First, along the first direction of the circumferential direction CC ( Figure 11 To the right of the middle, or rather, Figure 9 In a counter-clockwise direction, the windings are sequentially wound around the first pole portion 201, the second pole portion 202, and the third pole portion 203 (that is, all pole portions except the fourth pole portion 204 or the last pole portion) to form the first winding portions 411', 412', and 413'. Then, following the order of the second pole portion 202, the third pole portion 203, and the first pole portion 201, adjacent pole portions 200 are wound in pairs to form the second winding portions 422' and 423'. Furthermore, the second winding portion 421' on the first pole portion, or pole portion 201, is provided separately and is not directly electrically connected to the second winding portion on the adjacent pole portion (second pole portion 202). Finally, the windings continue to the fourth pole portion 204 and are sequentially wound to form the first winding portion 414' and the second winding portion 424'. The dashed arrow between the first winding portion 414' and the second winding portion 424' indicates that they are arranged continuously and there is no fly wire between them.

[0074] Figures 9 to 11 This demonstrates the arrangement of multiple fly wires. Each fly wire is labeled with a circled number from 1 to 6. Figures 5 to 7 Compared to the seven-flying-wire arrangement of the embodiment, Figures 9 to 11 The embodiment employs a different arrangement of the flying wires and requires only six flying wire arrangements. Therefore, Figures 9 to 11 This embodiment can reduce the number of processing steps for arranging flying wires, or in other words, reduce the cycle time of a single core or winding station, and thus improve manufacturing and processing efficiency. For example, in Figure 2In the illustrated embodiment, 48 poles 200 are arranged around the periphery of the core 100, with four poles 200 forming a group for winding. When 12 winding operations are required, each group reduces the time required for wire placement by one step, resulting in a total saving of 12 wire placement steps. For cores with more poles, the technical solution of this application can save even more wire placement time, thus leading to a significant efficiency improvement.

[0075] Figure 12 Is Figure 11 An extended embodiment based on [the previous one], Figure 12 The winding patterns of the first, fourth, fifth, and sixth pole sections are roughly the same as those in the first, fourth, fifth, and sixth pole sections. Figure 11 The winding patterns on the first pole section 201, the second pole section 202, the third pole section 203, and the fourth pole section 204 correspond. Similarly, the dashed arrows between the winding sections on the sixth pole section represent continuous arrangement, and there are no flying wires between the winding sections.

[0076] Combination Figure 11 and Figure 12 The following pattern can also be observed. The winding routing direction is as follows: First, along the first direction ( Figure 11 To the right of the middle, or rather, Figure 9 The first winding is formed by sequentially winding all poles except the 2Nth pole in a counter-clockwise direction to create 2N-1 first winding portions. Then, following the sequence of the 2N-2nd and 2N-1st poles, the 2N-4th and 2N-3rd poles, and so on, adjacent poles (excluding the 1st and 2Nth poles) are wound in pairs to form 2N-2 second winding portions. Then, the 1st pole (first pole 201) is wound to form a single second winding portion. Finally, the 2Nth pole is wound to sequentially form a single first winding portion and a single second winding portion. In the 2Nth pole, the first and second winding portions are wound continuously.

[0077] Among them, the second winding portions on adjacent poles, which are wound in pairs, are electrically connected by a flying wire in a first direction; and the second winding portions on adjacent poles, which are wound in pairs, are connected by a flying wire in a second direction ( Figure 11 To the left in the middle, or rather, Figure 9 The flying wires in the clockwise direction are electrically connected; and the second winding portion on the first pole is connected to the second winding portion on the third pole via a flying wire in the second direction, and is connected to the first winding portion on the 2Nth pole via a flying wire in the first direction. It is easy to understand that in the above pattern, N can be a natural number greater than or equal to 2.

[0078] Combination Figures 5 to 12 The embodiments can also be summarized as follows: each of the first winding portions 410 is connected via a flying wire in a first direction along the circumferential direction CC, and at least a portion of the second winding portions 420 is connected via a flying wire in a second direction along the circumferential direction CC. The second direction is opposite to the first direction. In this document, "connected" means from... Figure 7 and Figure 11 The upstream end of the winding is electrically connected to either the first winding portion 410 or the second winding portion 420. Similarly, "out" means from... Figure 7 and Figure 11 Electrical connection that extends further downstream of the first winding portion 410 or the second winding portion 420.

[0079] In addition, refer to Figure 11 Arrow A5 can be considered as the upstream of the winding, and arrow A6 as the downstream of the winding. Along the winding, from upstream to downstream, the first winding portions 411', 412', 413', the second winding portions 422', 423', and 421' are formed sequentially, followed by the first winding portion 414' and the second winding portion 424'. In this case, the second winding portion 423' on the third pole (third pole 203) arranged in the first direction of the circumferential direction CC is also located upstream of the second winding portion 421' on the first pole (first pole 201) arranged in the first direction of the circumferential direction CC.

[0080] Furthermore, for each of the second winding sections, they may extend in whole or in part along the extension length of the pole (from the root to the end). Figure 9 and Figure 10 In the illustrated embodiment, the second winding portions on adjacent poles are arranged with their extension lengths at the poles staggered or spaced apart from each other. The reason for this arrangement is that the exit or entry position of each flying wire is usually in the middle of the slot 300, and the second winding is arranged to prevent the flying wire from extending out of the slot opening and blocking the opening.

[0081] By adopting Figures 9 to 12 In the illustrated embodiment, the winding can occupy a larger cross-sectional area in slot 300, thereby increasing the slot fill factor. Furthermore, the increased number of turns of the winding around pole 200 increases the magnetic flux and consequently improves the overall operating efficiency of the electric actuator. Figures 5 to 8 Implementation examples and Figures 9 to 12The embodiments all provide a first winding portion and a second winding portion for each pole 200, and thus provide a longer overall wire cable length, thereby increasing the magnetic flux. In addition, by adopting the winding arrangement described in this application, the regularity and orderliness of the flying wires arranged between different poles or winding portions are significantly improved, which can effectively reduce the overlap between flying wires, thereby reducing the possibility of potential insulation failure caused by the overlap between flying wires.

[0082] Although the technical solution of this application has been described above in conjunction with the winding method of the stator, it is easy to understand that the electric drive component of this application is not limited to the stator, but can also be applied to the rotor or any other suitable component.

[0083] This application also relates to an electric actuator that includes the electric actuator components described above. In one embodiment, the electric actuator may be a hub motor for an electric two-wheeled vehicle. In one embodiment, the electric actuator may be disposed on the rear wheel of the electric two-wheeled vehicle. In one embodiment, the electric actuator component may be a stator fitted onto the hub of the electric two-wheeled vehicle; for example, the axle 10 of the electric two-wheeled vehicle may be configured to extend along the axial direction AA, and the core 100 may be fitted onto the axle 10 of the electric two-wheeled vehicle. In one embodiment, the electric actuator component, as the rotor, may be attached to the wheel of the electric two-wheeled vehicle and positioned so that it is adjacent to the stator of the electric actuator in the radial direction RR.

[0084] The electric drive component and electric drive of this application have the advantages of simple structure, convenient manufacturing, and reliable sealing performance, and provide manufacturing convenience and cost reduction.

[0085] This specification discloses the present application with reference to the accompanying drawings, and also enables those skilled in the art to implement the application, including making and using any device or system, selecting suitable materials, and using any combination method. The scope of this application is defined by the claimed technical solution, but includes other instances that would occur to those skilled in the art. Such other instances shall be considered to fall within the scope of protection defined by the claimed technical solution, provided that they include structural elements that are not different from the literal language of the claimed technical solution, or that they include equivalent structural elements that are not substantially different from the literal language of the claimed technical solution.

Claims

1. An electric actuator component, characterized in that, include: The iron core (100) is constructed to have a ring shape and is constructed to be symmetrical about the axial direction (AA); Multiple poles (200) are distributed in the circumferential direction (CC) along the annular shape of the iron core (100) and are configured to extend in the radial direction (RR); Multiple slots (300) are formed between adjacent pole portions (200); as well as A winding (400) is arranged around each of the poles (200) and located within the slot (300), and comprises one or more layers of coil; The winding (400) comprises, around a plurality of poles (200) arranged in succession belonging to the same phase, the winding being: Multiple first winding portions (410) are wound with a first number of layers around each pole (200); Multiple second winding portions (420) form a second number of layers on the outer periphery of the first winding portion (410) that are wound around the respective poles (200); and Multiple flying wires (500) are located at the following positions: between the first winding portion (410) and the second winding portion (420), between the first winding portion (410) and the first winding portion (410), and between the second winding portion (420) and the second winding portion (420); In the winding (400), the first winding portion (410) is connected by a flying wire in a first direction along the circumferential direction (CC), and at least a portion of the second winding portion (420) is connected by a flying wire in a second direction along the circumferential direction (CC), the second direction being opposite to the first direction; and The number of consecutively arranged poles (200) belonging to the same phase is even, and at least four.

2. The electric drive component according to claim 1, characterized in that, At least one second winding portion (420) on a pole (200) is electrically connected to a first winding portion (410) on a next pole (200) arranged in a first direction via a fly-wire in a second direction, and then electrically connected to a second winding portion (420) on the next pole (200) via a fly-wire in the first direction; and / or The second winding portion (420) on the third pole (200) arranged in the first direction along the circumferential direction (CC) is arranged upstream of the second winding portion (420) on the first pole (200) arranged in the first direction along the circumferential direction (CC).

3. The electric drive component according to claim 1, characterized in that, The first quantity is a natural number selected from 1 to 10, and the second quantity is a natural number selected from 1 to 10, wherein the second quantity is less than or equal to the first quantity.

4. The electric drive component according to claim 1, characterized in that, The wiring direction of the winding (400) is as follows: First, along the first direction, all 2N poles are wound sequentially to form 2N first winding portions; then, in accordance with the order of the 2N-1 and 2N poles, the 2N-3 and 2N-2 poles, etc., adjacent poles are wound in pairs to form 2N second winding portions. Specifically, the second winding portions on adjacent poles, which are wound in pairs, are electrically connected by a flying wire in a first direction; and the second winding portions on adjacent poles, which are wound in pairs, are electrically connected by a flying wire in a second direction; and Where N is a natural number greater than or equal to 2.

5. The electric drive component according to claim 1, characterized in that, The wiring direction of the winding (400) is as follows: First, all poles except the 2Nth pole are wound sequentially along the first direction to form 2N-1 first winding portions; then, following the order of the 2N-2nd and 2N-1st poles, the 2N-4th and 2N-3rd poles, etc., adjacent poles except the 1st and 2Nth poles are wound in pairs to form 2N-2 second winding portions; then, the 1st pole is wound to form a single second winding portion; finally, the 2Nth pole is wound to form a single first winding portion and a single second winding portion in sequence. Specifically, the second winding portions on adjacent poles, which are wound in pairs, are electrically connected by a flying wire in a first direction; and the second winding portions on adjacent poles are electrically connected by a flying wire in a second direction; furthermore, the second winding portion on the first pole is connected to the second winding portion on the third pole via a flying wire in a second direction, and is connected to the first winding portion on the 2Nth pole via a flying wire in the first direction; and Where N is a natural number greater than or equal to 2.

6. The electric drive component according to claim 1, characterized in that, The first direction is either clockwise or counterclockwise along the circumferential direction (CC) of the iron core (100).

7. The electric drive component according to any one of claims 1-6, characterized in that, The winding (400) is wound in a clockwise or counterclockwise direction around the first of the plurality of poles (200), and the winding (400) is wound in opposite directions around two adjacent poles (200).

8. The electric drive component according to any one of claims 1-6, characterized in that, The pole portion (200) extends radially inward or radially outward in the radial direction (RR).

9. The electric drive component according to any one of claims 1-6, characterized in that, The second winding portion (420) extends all or part of the extension length of each pole (200).

10. The electric drive component according to any one of claims 1-6, characterized in that, The second winding portion (420) extends around a portion of the extension length of each pole (200), and the second winding portions (420) of the windings (400) on adjacent poles (200) are arranged to be offset from and / or spaced apart from each other in the radial direction (RR).

11. An electric actuator, characterized in that, Includes the electric drive component according to any one of claims 1-10.

12. The electric actuator according to claim 11, characterized in that, The electric drive is an electric drive for the hub of a two-wheeled electric vehicle, and the electric drive component is a stator attached to the hub of the two-wheeled electric vehicle, or the electric drive component is a rotor attached to the wheel of the two-wheeled electric vehicle.

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