Motor and vehicle

Abstract

The invention relates to a motor and a vehicle, the motor comprises a stator core (1) and a stator winding, the inner circumferential wall of the stator core (1) is provided with a plurality of stator slots (11) along the circumferential direction, each stator slot (11) is internally provided with a plurality of layers of flat wire conductors (12) which are sequentially arranged along the radial direction, the multiple layers of flat wire conductors (12) respectively form at least any two of a whole pitch winding, a short 1 pitch winding to a short n pitch winding, and n is a natural number greater than 1. In the motor provided by the invention, the multiple layers of flat wire conductors of the stator winding respectively form any two or more combinations of a whole pitch winding, a short 1 pitch winding, a short 1.5 pitch winding, a short 2 pitch winding and the like, a hybrid span winding is provided, flexible combinations of different span types can be realized in the same product, linear adjustment of power torque can be realized, and the stability of the motor is improved. The application range is expanded.

Description

Technical Field

[0001] The present disclosure relates to the technical field of motors, and in particular to a motor and a vehicle. Background Art

[0002] Drive motors are core components of new energy vehicles. To improve motor efficiency, increasing the copper wire slot fill rate has become a key research topic in the industry. To achieve this higher slot fill rate, windings are evolving from round wire to flat wire. Flat wire windings vary in power and torque depending on the pitch. In related technologies, stator windings are either full-pitch or short-pitch, resulting in step-like changes in power and torque, which hinders platform design and selection. Summary of the Invention

[0003] To overcome the problems existing in the related art, the present disclosure provides a motor and a vehicle.

[0004] According to a first aspect of an embodiment of the present disclosure, a motor is provided, comprising a stator core and a stator winding, wherein the inner peripheral wall of the stator core is provided with a plurality of stator slots along the circumferential direction, and each stator slot is provided with multiple layers of flat wire conductors arranged in sequence along the radial direction, wherein: The multiple layers of the flat wire conductors respectively form at least two of full-pitch windings, short-1-pitch windings, and short-n-pitch windings, wherein n is a natural number greater than 1.

[0005] Optionally, N layers of the flat wire conductor form the short 1-pitch winding or the short n-pitch winding, wherein: In the short-pitch winding, the flat wire conductor of the N1 layer is offset by one stator slot clockwise or counterclockwise relative to the flat wire conductor of the N-N1 layer; In the short n-pitch winding, the N1 layer of flat wire conductors is offset clockwise or counterclockwise by n stator slots compared to the N-N1 layer of flat wire conductors, where N is a positive integer, and N1<N is a positive integer.

[0006] Optionally, the first layer of flat wire conductors is close to the bottom of the stator slot, and the Lth layer of flat wire conductors is close to the opening of the stator slot, where L>1 and is a positive integer. The flat wire conductors of the first layer and the Lth layer are connected in pairs. From the first layer to the Lth layer, the flat wire conductors of the adjacent two layers are connected. The stator slots where two connected flat wire conductors are located are spaced apart by R stator slots, occupying r layers, to form a first span group, where R is a positive integer, and r≥1 is a positive integer; The interval between the stator slots where the two connected flat wire conductors are located is M stator slots, occupying m layers, to form a second span group, M≠N and is a positive integer, m≥1 and is a positive integer; wherein, The first span group is a full-span winding, and the second span group is a short-span winding; or The first span group is a short 2-span winding, and the second span group is a short 1-span winding.

[0007] Optionally, the inner circumferential wall of the stator core is provided with 54 stator slots along the circumferential direction, and each stator slot is provided with 7 layers of flat wire conductors arranged in sequence along the radial direction, wherein: The flat wire conductors of the first layer are connected in pairs, and the stator slots where one connected flat wire conductor of the first layer is located are spaced apart by nine stator slots, occupying one layer, to form the first span group; In the flat wire conductors of the first to seventh layers, the flat wire conductors of two adjacent layers are connected, and the stator slots where a connected flat wire conductor and a flat wire conductor of another layer are located are spaced apart by 8 stator slots, occupying 6 layers, to form the second span group.

[0008] Optionally, the inner circumferential wall of the stator core is provided with 54 stator slots along the circumferential direction, the number of pole pairs is 3, and each stator slot is provided with 7 layers of flat wire conductors arranged in sequence along the radial direction. The 7 layers of flat wire conductors form a full-pitch winding and a short-pitch winding respectively, wherein the full-pitch winding occupies one layer, the short-pitch winding occupies six layers, and the short-pitch winding has three layers leading and three layers lagging.

[0009] Optionally, the inner circumferential wall of the stator core is provided with 54 stator slots along the circumferential direction, the number of pole pairs is 3, and each stator slot is provided with seven layers of flat wire conductors arranged in sequence along the radial direction. The seven layers of flat wire conductors respectively form a short 1-pitch winding and a short 2-pitch winding, wherein the short 2-pitch winding occupies one layer, the short 1-pitch winding occupies six layers, and the short 1-pitch winding has three layers leading and three layers lagging.

[0010] Optionally, the flat wire conductor is an odd-numbered layer or an even-numbered layer.

[0011] Optionally, the first layer of flat wire conductors and the Lth layer of flat wire conductors are respectively formed by inserting hairpin coils of the same layer, the first layer of flat wire conductors is formed by hairpin coils of the same layer with one span, and the Lth layer of flat wire conductors is formed by hairpin coils of the same layer with two spans.

[0012] Optionally, from the first layer of flat wire conductors to the Lth layer of flat wire conductors, two adjacent layers of flat wire conductors are formed by cross-layer hairpin coils, and the cross-layer hairpin coils are of at least two types.

[0013] According to a second aspect of an embodiment of the present disclosure, a vehicle is provided, comprising the above-mentioned motor.

[0014] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: in the motor provided by the present disclosure, the multi-layer flat wire conductors of the stator winding respectively form a combination of any two or more of full-pitch windings, short 1-pitch windings, short 1.5-pitch windings, short 2-pitch windings, etc., providing a mixed-span winding, which can realize a flexible combination of different span types in the same product, and the power torque can be linearly adjusted to achieve smooth power output, improve control accuracy and stability, optimize energy efficiency, extend service life, and expand the scope of application.

[0015] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0017] Figure 1 It is a schematic structural diagram of a stator core end face according to an exemplary embodiment.

[0018] Figure 2 yes Figure 1 A partial enlarged view of the location of the middle stator slot.

[0019] Figures 3 to 5 1 is a schematic diagram of the connection structure of parallel branches in a stator winding shown in a related exemplary embodiment.

[0020] Figure 6 1 is a schematic diagram of the connection structure of one of the parallel branches in the stator winding according to an exemplary embodiment.

[0021] Figure 7 is a schematic diagram of the connection structure of one of the parallel branches in the stator winding according to another exemplary embodiment.

[0022] Figures 8 to 11 It is a structural schematic diagram of a hairpin coil shown in an exemplary embodiment of the present disclosure.

[0023] Description of Reference Numerals 1- stator core; 11- stator slot; 12- flat wire conductor; 201- formed end; 202- welding end; 21- first hairpin coil; 22- second hairpin coil; 23- third hairpin coil; 24- fourth hairpin coil. DETAILED DESCRIPTION

[0024] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0025] In the present disclosure, unless otherwise specified, directional terms such as "axial" and "radial" generally refer to directions relative to the central axis of the stator core in the motor provided by the present disclosure, and "inside" and "outside" may refer to the inside and outside of the corresponding component outline or the inside or outside of the environment in which it is located, depending on the specific context. In addition, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have sequentiality or importance.

[0026] The present disclosure provides a motor, which includes a stator core and a stator winding. Figure 1 and Figure 2 As shown, the inner circumferential wall of the stator core 1 is circumferentially defined with a plurality of stator slots 11. Each stator slot 11 houses multiple layers of radially arranged flat wire conductors 12. The multiple layers of flat wire conductors 12 form at least two of a full-pitch winding, a short 1-pitch winding, or a short n-pitch winding, where n is a natural number greater than 1. The "short n-pitch winding" herein can include a short 1.5-pitch winding, a short 2-pitch winding, and so on. Combinations of full-pitch windings and windings of varying short pitches are possible, and any combination of two or more of these can be employed. The specific design can be tailored to individual needs.

[0027] To facilitate understanding, the terms related to winding are explained and illustrated here.

[0028] The number of magnetic poles, the number of poles of the motor, the magnetic poles are divided into N poles and S poles. Generally, one N pole and one S pole are called a pair of magnetic poles, that is, the number of pole pairs is 1. Therefore, the number of pole pairs of the motor is 1, 2, 3, 4, and the number of poles of the motor is 2, 4, 6, 8.

[0029] Pole pitch, the distance from the center of one magnetic pole to the center of the next magnetic pole of the same name, , where z is the number of stator slots 11, is the pole pair number.

[0030] Pitch refers to the distance between the two effective sides of a coil on the stator. This distance is usually expressed in the number of slots.

[0031] Full-pitch winding refers to a type of winding in which the pitch of the coil is equal to the pole pitch. Existing flat wire motor stator windings are mostly wound using full-pitch winding. During use, full-pitch windings have large torque fluctuations, resulting in a decrease in the NVH performance of the motor.

[0032] Short-pitch winding refers to a type of winding in which the pitch of the coil is smaller than the pole pitch. Due to the limitations of the short-pitch winding form, it is only suitable for stators with an even number of layers of flat wire conductors and cannot effectively expand the number of layers of flat wire conductors in the stator.

[0033] In the motor provided by the present invention, the multi-layer flat wire conductors 12 of the stator winding respectively form a combination of any two or more of full-pitch windings, short 1-pitch windings, short 1.5-pitch windings, short 2-pitch windings, etc., providing a mixed-span winding that can realize a flexible combination of different span types in the same product. The power torque can be linearly adjusted to achieve smooth power output, improve control accuracy and stability, optimize energy efficiency, extend service life, and expand the scope of application.

[0034] In order to understand the different windings more clearly, in this disclosure, Figure 3 The connection of each parallel branch of the traditional full-pitch winding is shown. Figure 4 The connection of the parallel branches of the short 1-pitch winding is shown, where the 1st and 2nd layers lead and the 3rd and 4th layers lag by one stator slot. Figure 5 The connection of the parallel branches of the short 2-pitch winding is shown, where the first and second layers lead and the third and fourth layers lag by two stator slots.

[0035] In an exemplary embodiment provided by the present disclosure, Figure 6 As shown, the inner circumferential wall of the stator core 1 is provided with 54 stator slots 11 along the circumferential direction, with a pole pair number of 3. Each stator slot 11 is provided with 7 layers of flat wire conductors 12 arranged in sequence along the radial direction. The 7 layers of flat wire conductors 12 respectively form a full-pitch winding and a short-pitch winding. Among them, the full-pitch winding occupies one layer, the short-pitch winding occupies six layers, and the short-pitch winding has three leading layers and three lagging layers, realizing a hybrid winding design of full-pitch winding and short-pitch winding.

[0036] In another exemplary embodiment provided by the present disclosure, Figure 7 As shown, the inner circumferential wall of the stator core 1 is provided with 54 stator slots 11 along the circumferential direction, with a pole pair number of 3. Each stator slot 11 is provided with 7 layers of flat wire conductors 12 arranged in sequence along the radial direction. The 7 layers of flat wire conductors 12 respectively form a short 1-pitch winding and a short 2-pitch winding, wherein the short 2-pitch winding occupies one layer and the short 1-pitch winding occupies six layers, and the short 1-pitch winding has three layers leading and three layers lagging, thereby realizing a hybrid winding design of the short 1-pitch winding and the short 2-pitch winding.

[0037] In an embodiment in which L layers of flat wire conductors are provided in the stator slot 11, the first layer of flat wire conductors may be close to the bottom of the stator slot 11, and the Lth layer of flat wire conductors may be close to the opening of the stator slot 11, where L>1 and is a positive integer. In other embodiments, the first layer of flat wire conductors may also be close to the opening of the stator slot 11, and the Lth layer may be close to the bottom of the stator slot 11, such as Figure 6 and Figure 7 As shown, the flat wire conductors of the first layer and the flat wire conductors of the Lth layer are connected in pairs. In the flat wire conductors of the first layer to the Lth layer, the flat wire conductors of two adjacent layers are connected. The stator slots where the two connected flat wire conductors are located are spaced apart by R stator slots, occupying r layers, to form a first span group, where R is a positive integer, r ≥ 1 and is a positive integer; the stator slots where the two connected flat wire conductors are located are spaced apart by M stator slots, occupying m layers, to form a second span group, where M ≠ N and is a positive integer, m ≥ 1 and is a positive integer; wherein, as Figure 6 As shown, the first span group can be a full-span winding, and the second span group can be a short-span winding; or Figure 7 As shown, the first span group is a short 2-span winding, and the second span group is a short 1-span winding. That is, the embodiments provided by the present disclosure are not limited to the embodiment with 7 layers of flat wire conductors, 1 layer of full-span windings, and 6 layers of short-span windings, nor are they limited to the embodiment with 7 layers of flat wire conductors, 6 layers of short 1-span windings, and 1 layer of short 2-span windings. Third, fourth, or even more span windings can also be expanded.

[0038] In the present disclosure, N layers of flat wire conductors 12 can be used to form the above-mentioned short 1-pitch winding or short n-pitch winding, wherein in the short 1-pitch winding, the N1-layer flat wire conductor is offset by one stator slot clockwise or counterclockwise relative to the N-N1-layer flat wire conductor; in the short n-pitch winding, the N1-layer flat wire conductor is offset by n stator slots clockwise or counterclockwise relative to the N-N1-layer flat wire conductor, where N is a positive integer and N1<N is a positive integer. Figure 6 In the embodiment shown, it is a combination of full-pitch winding and short-pitch winding. The first layer of flat wire conductor forms a full-pitch winding, N is 6, and N1 is 3, that is, the six layers of flat wire conductors 12 of the 2nd to 7th layers form a short-pitch winding, and the 5th to 7th layers of flat wire conductors are offset by one stator slot clockwise than the 2nd to 4th layers of flat wire conductors (it can also be understood that the 2nd to 4th layers of flat wire conductors are offset by one stator slot counterclockwise than the 5th to 7th layers of flat wire conductors), that is, three layers lead and three layers lag. Of course, it can also be 8 layers, 4 layers lead and 4 layers lag, or other layer designs, which are not limited in this disclosure. Figure 7In the embodiment shown, it is a combination of a short 1-pitch winding and a short 2-pitch winding. The 5th to 7th layers of flat wire conductors are offset by one stator slot clockwise compared to the 2nd to 4th layers of flat wire conductors to form a short 1-pitch winding. The 5th to 7th layers of flat wire conductors are offset by two stator slots clockwise compared to the 1st layer of flat wire conductors to form a short 2-pitch winding. Of course, the number of layers forming a short 1-pitch winding or a short n-pitch winding is not limited to 3 layers, and can be two layers or one layer, etc., and is specifically designed according to needs and falls within the scope of protection of the present disclosure.

[0039] In the exemplary embodiment provided herein, the inner circumferential wall of the stator core 1 is circumferentially provided with 54 stator slots 11. Each stator slot 11 houses seven layers of radially arranged flat wire conductors 12. The flat wire conductors in the first layer are connected in pairs, with the stator slots between one connected flat wire conductor and another connected flat wire conductor being nine stator slots apart, forming a first span group. From the first to the seventh layers, the flat wire conductors of adjacent layers are connected, with the stator slots between a connected flat wire conductor and a connected flat wire conductor in another layer being eight stator slots apart, forming a second span group. The pitch and number of layers in each of the first and second span groups, and even in third and subsequent span groups, can be designed according to specific needs.

[0040] In the present disclosure, the flat wire conductor 12 can be provided with an odd number of layers. Compared to a purely short-pitch winding, which can only have an even number of layers, this effectively expands the number of layers of the flat wire conductor and expands its application range. Of course, the present disclosure also includes embodiments in which the flat wire conductor 12 is designed with an even number of layers, enabling a variety of different winding combination designs.

[0041] like Figure 6 and Figure 7 As shown, the first layer of flat wire conductors and the Lth layer of flat wire conductors are formed by inserting the hairpin coils on the same layer. Figure 6 and Figure 7 In the embodiment shown, the interval between the stator slots where the two connected flat wire conductors are located in the first layer is 9 stator slots. The flat wire conductors in the first layer can be formed by a hairpin coil with the same span. Figure 8 The first hairpin coil 21 is shown. The stator slots of the Lth layer of connected flat conductors are spaced 10 stator slots and 7 stator slots apart. The Lth layer of flat conductors is formed by hairpin coils of two different spans. In this disclosure, the hairpin coil crossover method is not limited to this method; any hairpin coil crossover method that achieves the same topological connection structure falls within the scope of this disclosure.

[0042] From the first layer of flat wire conductors to the Lth layer of flat wire conductors, two adjacent layers of flat wire conductors are formed by cross-layer hairpin coils, and there are at least two types of cross-layer hairpin coils. In this embodiment, the second layer to the third layer can be formed by Figure 9The second hairpin coil 22 is formed, and the 4th to 5th layers can be formed by Figure 10 The third hairpin coil 23 shown is formed, and the 5th to 6th layers can be formed by Figure 9 The second hairpin coil 22 is formed, and the 6th to 7th layers can be formed by Figure 11 The fourth hairpin coil 24 shown is formed, and can also be formed by Figure 9 The second hairpin coil 22 shown is formed, that is, at least two cross-layer hairpin coils need to be designed to realize the arrangement of two adjacent layers of flat conductors 12. Of course, in the embodiments provided by the present disclosure, there is no limitation on the number and type of hairpin coils on the same layer and cross-layer hairpin coils.

[0043] exist Figure 6 The connection method shown only shows the connection method of one branch of a certain winding. Other branches of the same phase and windings of other phases can be simply constructed through a periodic array. The dotted line represents the routing of the hairpin coil at the forming end 201, and the solid line represents the routing of the hairpin coil at the welding end 202. Taking the branch shown by the black line as an example, take the first layer of the first slot (hereinafter referred to as 1-1, the abbreviations of other positions refer to this example) as the starting point, jump to 10-2 at the welding end, jump to 1-3 at the forming end, jump to 10-4 at the welding end, jump to 2-5 at the welding end, jump to 11-6 at the welding end, jump to 2-7 at the forming end, jump to 12-7 at the welding end, jump to 21-6 at the forming end, jump to 12-5 at the welding end, jump to 20-4 at the forming end, jump to 11-3 at the welding end, jump to 20-2 at the forming end, jump to 11-1 at the welding end, jump to 20-1 at the forming end, jump to 29-2 at the welding end, jump to 20-3 at the welding end, jump to 29-4 at the forming end, jump to To 21-5, jump to 30-6 at the welding end, jump to 21-7 at the forming end, jump to 31-7 at the welding end, jump to 40-6 at the forming end, jump to 31-5 at the welding end, jump to 39-4 at the forming end, jump to 30-3 at the welding end, jump to 39-2 at the forming end, jump to 30-1 at the welding end, jump to 39-1 at the forming end, jump to 48-2 at the welding end, jump to 39 at the forming end -3, jumps to 48-4 at the welding end, jumps to 40-5 at the forming end, jumps to 49-6 at the welding end, jumps to 40-7 at the forming end, jumps to 47-7 at the welding end, jumps to 2-6 at the forming end, jumps to 47-5 at the welding end, jumps to 1-4 at the forming end, jumps to 46-3 at the welding end, jumps to 1-2 at the forming end, jumps to 46-1 at the welding end, and jumps to 1-1 at the forming end, forming a branch circuit. It should be noted here that the starting and ending points of the winding used in actual products can be different from those in this example. A set of lead wires can be obtained as the starting and ending points of the winding by interrupting any point in the entire loop. Figure 7 The connection method of one of the branches in the embodiment shown in FIG is similar to the above content and will not be described in detail here.

[0044] According to a second aspect of the present disclosure, a vehicle is provided, comprising the motor described above. The vehicle has all the advantages of the motor described above, which will not be described in detail here.

[0045] In the foregoing detailed description, reference is made to the accompanying drawings, which illustrate, by way of illustration, specific aspects of the present disclosure in which it may be practiced. In this regard, terms indicating directions or expressing positional relationships, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., may be used with reference to the orientation of the figures being described. Since the components of the described devices may be positioned in a plurality of different orientations, the directional terms may be used for illustrative purposes rather than restrictive. It should be understood that other aspects may be utilized and structural or logical changes may be made without departing from the concepts of the present disclosure. Therefore, the following detailed description should not be taken in a limiting sense.

[0046] It should be understood that, unless otherwise specifically noted, the features of the various embodiments of the present disclosure described herein may be combined with each other. As used herein, the term "and / or" includes any one of the relevant listed items and any combination of any two or more thereof; similarly, "at least one of" includes any one of the relevant listed items and any combination of any two or more thereof.

[0047] It should be understood that, unless otherwise expressly specified or limited, the terms "join," "attach," "install," "connect," "connect," "fix," etc. used in the embodiments of the present disclosure should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected, electrically connected, or communicable with each other; they can be directly connected, or indirectly connected through an intermediate medium, and they can be internally connected between two elements or an interactive relationship between two elements, unless otherwise expressly limited. For those skilled in the art, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0048] Additionally, the term "over" as used in reference to a component, element, or material layer being formed "over" or located "over" a surface may be used herein to mean that the component, element, or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements, or layers are disposed between the surface and the component, element, or material layer. However, the term "over" as used in reference to a component, element, or material layer being formed "over" or located "over" a surface may alternatively have a specific meaning: the component, element, or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, e.g., in direct contact with the surface.

[0049] Although terms such as "first", "second" and "third" may be used herein to describe various components, parts, regions, layers or sections, these components, parts, regions, layers or sections are not limited to these terms. On the contrary, these terms are only used to distinguish one component, part, region, layer or section from another component, part, region, layer or section. Therefore, without departing from the teachings of each example, the first component, part, region, layer or section mentioned in the examples described herein may also be referred to as the second component, part, region, layer or section. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one such feature. In the description herein, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0050] It should be understood that spatially relative terms, such as "above," "upper," "below," and "lower," are used herein to describe the relationship of one element to another element shown in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, an element described as being "above" or "upper" relative to another element would then be "below" or "lower" relative to the other element. Thus, the term "above" encompasses both above and below orientations, depending on the spatial orientation of the device. The device may be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein should be interpreted accordingly.

[0051] Furthermore, the word "exemplary" is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as "exemplary" is not necessarily to be construed as advantageous over other aspects or designs. Rather, the use of the word exemplary is intended to present concepts in a concrete manner. As used herein, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or." That is, unless otherwise specified or clear from the context, "X applies to A or B" is intended to mean any of the natural inclusive permutations. That is, if X applies to A; X applies to B; or X applies to both A and B, then "X applies to A or B" satisfies any of the aforementioned instances. Furthermore, the articles "a" and "an," as used in this application and the appended claims, are generally understood to mean "one or more," unless otherwise specified or clear from the context to refer to the singular form.

[0052] Likewise, although the present disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. The present disclosure includes all such modifications and variations and is limited only by the scope of the claims. With particular regard to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, terms used to describe such components are intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if not structurally equivalent to the disclosed structure. In addition, although particular features of the present disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations as may be desired and advantageous for any given or particular application. Furthermore, to the extent that the terms "include," "have," "have," "have," or variations thereof are used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term "comprising."

[0053] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

[0054] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A motor comprising a stator core and a stator winding, characterized in that: The inner circumferential wall of the stator core is provided with a plurality of stator slots along the circumferential direction, and each stator slot is provided with a plurality of layers of flat wire conductors arranged in sequence along the radial direction, wherein: The multiple layers of the flat wire conductors respectively form any at least two of a full-pitch winding, a short 1-pitch winding, and a short n-pitch winding, wherein n is a natural number greater than 1.

2. The motor according to claim 1, characterized in that N layers of the flat wire conductor form the short 1-pitch winding or the short n-pitch winding, wherein: In the short winding 1, the flat wire conductor of the N1 layer is offset by one stator slot clockwise or counterclockwise compared to the flat wire conductor of the N-N1 layer; In the short n-pitch winding, the N1 layer of flat wire conductors is offset clockwise or counterclockwise by n stator slots compared to the N-N1 layer of flat wire conductors, where N is a positive integer, and N1<N is a positive integer.

3. The motor according to claim 1, characterized in that The first layer of flat wire conductors is close to the bottom of the stator slot, and the Lth layer of flat wire conductors is close to the opening of the stator slot, where L>1 and is a positive integer. The flat wire conductors of the first layer and the flat wire conductors of the Lth layer are connected in pairs, and the flat wire conductors of the adjacent two layers are connected in the flat wire conductors of the first layer to the Lth layer. The interval between the stator slots where the two connected flat wire conductors are located is R stator slots, occupying r layers, to form a first span group, R is a positive integer, r ≥ 1 and is a positive integer; The interval between the stator slots where the two connected flat wire conductors are located is M stator slots, occupying m layers, to form a second span group, M≠N and is a positive integer, m≥1 and is a positive integer; wherein, The first span group is a full-span winding, and the second span group is a short-span winding; or The first span group is a short 2-span winding, and the second span group is a short 1-span winding.

4. The motor according to claim 3, characterized in that The inner circumferential wall of the stator core is provided with 54 stator slots along the circumferential direction, and each stator slot is provided with 7 layers of flat wire conductors arranged in sequence along the radial direction, wherein: The flat wire conductors of the first layer are connected in pairs, and the stator slots where one connected flat wire conductor of the first layer and another connected flat wire conductor of the first layer are located are spaced by 9 stator slots, occupying one layer, so as to form the first span group; In the flat wire conductors of the 1st layer to the 7th layer, the flat wire conductors of two adjacent layers are connected, and the stator slots where a connected flat wire conductor and a flat wire conductor of another layer are located are spaced 8 stator slots apart, occupying 6 layers, to form the second span group.

5. The motor according to any one of claims 1 to 4, characterized in that: The inner circumferential wall of the stator core is provided with 54 stator slots along the circumferential direction, the number of pole pairs is 3, each stator slot is provided with 7 layers of flat wire conductors arranged in sequence along the radial direction, the 7 layers of flat wire conductors respectively form a full-pitch winding and a short-pitch winding, wherein the full-pitch winding occupies one layer, the short-pitch winding occupies six layers, and the short-pitch winding has three leading layers and three lagging layers.

6. The motor according to any one of claims 1 to 4, characterized in that: The inner circumferential wall of the stator core is provided with 54 stator slots along the circumferential direction, the number of pole pairs is 3, and each stator slot is provided with seven layers of flat wire conductors arranged in sequence along the radial direction, and the seven layers of the flat wire conductors respectively form a short 1-pitch winding and a short 2-pitch winding, wherein the short 2-pitch winding occupies one layer, the short 1-pitch winding occupies six layers, and the short 1-pitch winding has three leading layers and three lagging layers.

7. The motor according to claim 1, characterized in that The flat wire conductor has an odd number of layers or an even number of layers.

8. The motor according to claim 1, characterized in that The first layer of flat wire conductors and the Lth layer of flat wire conductors are respectively formed by inserting hairpin coils of the same layer. The first layer of flat wire conductors is formed by hairpin coils of the same layer with one span, and the Lth layer of flat wire conductors is formed by hairpin coils of the same layer with two spans.

9. The motor according to claim 8, characterized in that From the first layer of flat wire conductors to the Lth layer of flat wire conductors, two adjacent layers of the flat wire conductors are formed by cross-layer hairpin coils, and the cross-layer hairpin coils are of at least two types.

10. A vehicle, characterized in that: A motor comprising any one of claims 1-9.

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