Flat wire motor and scooter

Abstract

The utility model discloses a flat wire motor and scooter, flat wire motor includes stator core and stator winding, and stator core includes a plurality of stator teeth, and the stator slot is defined between any two adjacent stator teeth, and stator winding includes a plurality of U-shaped lines, and the number of U-shaped lines and the number of stator teeth one -to -one, and each group U-shaped line includes a plurality of U-shaped lines along the radial arrangement of stator core, and U-shaped line includes first insertion section, first intermediate section and second insertion section that are connected in proper order, and first insertion section and second insertion section are located in two stator slots of adjacent respectively and along the circumferential arrangement of stator core, and in the same group U-shaped line's two U-shaped lines of adjacent, the free end of first insertion section in a U-shaped line is bent to form first welding part, and the free end of second insertion section in another U-shaped line is bent to form second welding part, and first welding part and second welding part are connected. The utility model provides flat wire motor has compact structure, small, and the advantage that the appearance degree of high is high.

Description

Technical Field

[0001] This utility model relates to the field of mobility scooter technology, specifically to a flat wire motor and a mobility scooter. Background Technology

[0002] The stator core of the hub motor commonly used in two-wheeled mobility scooters is usually made into a single ring with stator slots on the outside, where multiple wires are wound. To improve the utilization rate of the stator slots, some hub motors use flat wires wound in the stator slots.

[0003] In related technologies, the stator windings typically span multiple teeth, meaning that after the winding extends from one stator slot, it crosses multiple teeth and inserts into another stator slot. However, this configuration usually results in the portion of the winding outside the stator slot occupying too much space to avoid interference with the other windings, thus making the axial dimension of the flat wire motor larger. When used as a hub motor, it suffers from the problems of large space occupation and low aesthetic appeal. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of this utility model propose a flat wire motor, which has the advantages of compact structure, small size, and high aesthetic appearance.

[0006] An embodiment of this utility model also proposes a mobility scooter.

[0007] The flat wire motor of this utility model embodiment includes a stator core and a stator winding. The stator core includes a plurality of stator teeth arranged at intervals along its circumference, and a stator slot is defined between any two adjacent stator teeth. The stator winding includes multiple sets of U-shaped wires, the number of sets of U-shaped wires being equal to and corresponding one-to-one with the number of stator teeth. Each set of U-shaped wires includes a plurality of U-shaped wires arranged sequentially along the radial direction of the stator core. Each U-shaped wire includes a first insertion segment, a first intermediate segment, and a second insertion segment connected in sequence. The first insertion segment and the second insertion segment are respectively located in two adjacent stator slots and arranged along the circumference of the stator core. In two adjacent U-shaped wires in the same set of U-shaped wires, the free end of the first insertion segment in one U-shaped wire is bent to form a first welded part, and the free end of the second insertion segment in the other U-shaped wire is bent to form a second welded part. The first welded part and the second welded part are connected.

[0008] According to an embodiment of the present invention, the flat wire motor includes multiple sets of U-shaped wires in the stator winding, each corresponding to a stator tooth. These multiple sets of U-shaped wires are arranged radially along the stator core, and each U-shaped wire crosses a corresponding stator tooth. That is, a portion of the stator winding crosses a stator tooth in the form of a U-shaped wire. Consequently, the first intermediate segment of any U-shaped wire will not interfere with other first intermediate segments in the axial direction of the stator core. This first intermediate segment can be positioned closer to the end face of the stator core, effectively reducing the axial dimension of the flat wire motor. The flat wire motor has a more compact structure and smaller volume, occupying less space in a scooter when used as a hub motor, thus improving the scooter's aesthetic appearance. Furthermore, the U-shaped wires are directly connected to the second welded portions of adjacent U-shaped wires via a first welded portion, eliminating the need for additional winding and effectively improving the assembly efficiency of the stator winding.

[0009] In some embodiments, in two adjacent U-shaped wires of the same group, the first weld portion of one U-shaped wire and the second weld portion of the other U-shaped wire are arranged and connected along the circumference of the stator core.

[0010] In some embodiments, in each group of U-shaped lines, all the first welded portions are arranged sequentially along the radial direction of the stator core, and all the second welded portions are arranged sequentially along the radial direction of the stator core.

[0011] In some embodiments, multiple sets of the U-shaped wires are arranged sequentially along the circumference of the stator core.

[0012] In some embodiments, the stator teeth are rectangular teeth, and the stator slots are fan-shaped slots whose width gradually increases outward along the radial direction of the stator core. The portion of the first insertion section located in the stator slot has the same cross-sectional size and shape at any position in its extension direction. The circumferential dimension of the portion of the first insertion section located in the stator slot gradually increases outward along the radial direction of the stator core. Alternatively, the circumferential dimension of the portion of the first insertion section located in the stator slot is equal at any position in the stator core.

[0013] In some embodiments, the stator slot is a rectangular slot, the stator tooth is a fan-shaped tooth whose width gradually increases outward along the radial direction of the stator core, and the first insertion section located in the stator slot has a rectangular cross-section with the same size at any position in its extension direction.

[0014] In some embodiments, the stator windings define a U-phase winding, a V-phase winding, and a W-phase winding, each of the U-phase winding, the V-phase winding, and the W-phase winding includes a plurality of phase windings arranged circumferentially along the stator core, each phase winding including at least two sets of U-shaped wires arranged adjacent to each other.

[0015] The stator winding also includes an interphase bridging line, and in each of the U-phase winding, the V-phase winding and the W-phase winding, two adjacent interphase windings are connected by the interphase bridging line.

[0016] In some embodiments, the phase-to-phase bridge line includes a first connecting segment, a second intermediate segment, and a second connecting segment connected in sequence. The first connecting segment and the second connecting segment are both located on the side of the stator core away from the first intermediate segment and are respectively welded to the side of the first insertion segment and the second insertion segment. The second intermediate segment is located on the inner circumference side, the outer circumference side, or the side away from the first intermediate segment of the stator core.

[0017] In some embodiments, each of the phase windings includes at least three sets of U-shaped wires, wherein the middle set of U-shaped wires is bent and connected to a portion of a first insert segment and a portion of a first insert segment in an adjacent set of U-shaped wires in a direction closer to each other, and is bent and connected to a portion of a second insert segment in an adjacent set of U-shaped wires in a direction closer to each other, via a portion of a second insert segment.

[0018] The mobility scooter according to an embodiment of the present invention includes a flat wire motor as described in any of the above embodiments.

[0019] The technical advantages of the mobility scooter according to the present invention are the same as those of the flat wire motor in the above embodiments, and will not be repeated here. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a flat wire motor according to an embodiment of the present utility model.

[0021] Figure 2 This is another schematic diagram of a flat wire motor according to an embodiment of the present utility model.

[0022] Figure 3 This is a schematic diagram of the stator core and U-phase winding in a flat wire motor according to an embodiment of the present utility model.

[0023] Figure 4 This is another schematic diagram of the stator core and U-phase winding in a flat wire motor according to an embodiment of the present utility model.

[0024] Figure 5 This is a schematic diagram of the phase winding in a flat wire motor according to an embodiment of the present utility model.

[0025] Figure 6 This is a schematic diagram of the U-shaped wire in the flat wire motor according to an embodiment of the present utility model.

[0026] Figure 7 This is a schematic diagram of the stator winding in a flat wire motor according to an embodiment of the present utility model.

[0027] Figure 8 This is a schematic diagram of the stator winding and insulating paper in a flat wire motor according to an embodiment of the present utility model.

[0028] Figure 9 This is a schematic diagram of a phase winding in a flat wire motor according to an embodiment of the present invention.

[0029] Figure label:

[0030] 1. Stator core; 11. Stator slot; 12. Stator tooth; 2. Stator winding; 21. U-shaped wire; 211. First insertion section; 2111. First welding part; 212. First intermediate section; 213. Second insertion section; 2131. Second welding part; 22. Phase-to-phase bridging wire; 23. Phase-separated winding; 3. Insulating paper. Detailed Implementation

[0031] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] The following is combined Figures 1-9 A flat wire motor according to an embodiment of the present utility model is described.

[0033] The flat wire motor of this utility model embodiment includes a stator core 1 and a stator winding 2. The stator core 1 includes a plurality of stator teeth 12 arranged at intervals along its circumference, and a stator slot 11 is defined between any two adjacent stator teeth 12. The stator winding 2 includes a plurality of U-shaped wires 21, the number of U-shaped wires 21 being equal to the number of stator teeth 12 and corresponding one-to-one. Each group of U-shaped wires 21 includes a plurality of U-shaped wires 21 arranged sequentially along the radial direction of the stator core 1. The U-shaped wires 21 include a first insertion section 211, a first intermediate section 212 and a second insertion section 213 connected in sequence. The first insertion section 211 and the second insertion section 213 are respectively located in two adjacent stator slots 11 and arranged along the circumference of the stator core 1. In two adjacent U-shaped lines 21 of the same group of U-shaped lines 21, the free end of the first insertion segment 211 in one U-shaped line 21 is bent to form a first welded part 2111, and the free end of the second insertion segment 213 in the other U-shaped line 21 is bent to form a second welded part 2131. The first welded part 2111 and the second welded part 2131 are connected.

[0034] According to the embodiment of the present invention, the flat wire motor includes multiple sets of U-shaped wires 21 corresponding one-to-one with stator teeth 12 in the stator winding 2. Each set of U-shaped wires 21 comprises multiple U-shaped wires 21 arranged radially along the stator core 1, and each U-shaped wire 21 crosses a corresponding stator tooth 12. That is, a portion of the stator winding 2 crosses a stator tooth 12 in the form of a U-shaped wire 21. Therefore, the first intermediate segment 212 of any U-shaped wire 21 will not interfere with the remaining first intermediate segments 212 in the axial direction of the stator core 1. This first intermediate segment 212 can be positioned closer to the end face of the stator core 1, thereby effectively reducing the axial dimension of the flat wire motor. The flat wire motor has a more compact structure and smaller volume. When used as a hub motor, it occupies less space in a personal mobility vehicle, resulting in a more aesthetically pleasing appearance. Meanwhile, the U-shaped wire 21 is directly connected to the second welding part 2131 of the adjacent U-shaped wire 21 through the first welding part 2111, which eliminates the need for additional winding and effectively improves the assembly efficiency of the stator winding 2.

[0035] It should be noted that each group of U-shaped wires 21 may include six U-shaped wires 21. The portions of the six U-shaped wires 21 located in the same stator slot 11 are arranged sequentially along the radial direction of the stator core 1 and abut against each other in pairs. The insulating varnish on the outer surface of the U-shaped wires 21 ensures that the two wires have insulated contact. In addition, as Figure 8 As shown, insulating paper 3 is inserted into each stator slot 11. The insulating paper 3 separates the portion of the stator winding 2 located in the stator slot 11 from the stator core 1, effectively preventing electrical connection between the stator winding 2 and the stator core 1. In the same group of U-shaped wires 21, adjacent U-shaped wires 21 are connected in series.

[0036] In some embodiments, such as Figure 5 As shown, in two adjacent U-shaped lines 21 of the same group of U-shaped lines 21, the first welded part 2111 of one U-shaped line 21 and the second welded part 2131 of the other U-shaped line 21 are arranged and connected along the circumference of the stator core 1.

[0037] At this time, the first welded part 2111 and the second welded part 2131 occupy less radial space in the stator core 1, and the probability of them accidentally connecting with the other first welded parts 2111 and the second welded parts 2131 in the same group of U-shaped wires 21 is lower, and the assembly efficiency of the stator winding 2 is higher.

[0038] For example, in the same group of U-shaped wires 21, there are five first welded parts 2111 and five second welded parts 2131 used to connect two adjacent U-shaped wires 21 in series. The five first welded parts 2111 are arranged at radial intervals along the stator core 1, and the five second welded parts 2131 are arranged at radial intervals along the stator core 1.

[0039] In some embodiments, such as Figures 1-5As shown, in each group of U-shaped lines 21, all the first welded parts 2111 are arranged in sequence along the radial direction of the stator core 1, and all the second welded parts 2131 are arranged in sequence along the radial direction of the stator core 1.

[0040] That is, all the first welded parts 2111 and all the second welded parts 2131 are located on the same plane, so that any first welded part 2111 and second welded part 2131 can be set closer to the end face of the stator core 1, thereby further reducing the axial dimension of the flat wire motor and making the flat wire motor smaller in size.

[0041] For example, the outlines of the first welding part 2111 and the second welding part 2131 are generally polygonal. The portions of the first welding part 2111 and the second welding part 2131 used for welding to each other extend along the axial direction of the stator core 1. The two are in contact with each other and welded along the circumferential side surfaces of the stator core 1.

[0042] In some embodiments, such as Figures 1-5 As shown, multiple sets of U-shaped wires 21 are arranged sequentially along the circumference of the stator core 1. That is, adjacent sets of U-shaped wires 21 do not intersect, and the portions of adjacent sets of U-shaped wires 21 inserted into the same stator slot 11 are arranged along the circumference of the stator core 1. In this case, along the radial direction of the stator core 1, each set of U-shaped wires 21 can include a larger number of U-shaped wires 21, thereby making the distribution of the stator windings 2 more uniform and improving the smoothness of motor operation. At the same time, this arrangement also ensures that the assembly of each set of U-shaped wires 21 on the stator core 1 does not interfere with each other, resulting in higher assembly efficiency.

[0043] In some embodiments, the stator teeth 12 are rectangular teeth, the stator slots 11 are fan-shaped slots whose width gradually increases outward along the radial direction of the stator core 1, and the portion of the first insertion section 211 located in the stator slot 11 has the same cross-sectional size and shape at any position in its extension direction, wherein the circumferential dimension of the portion of the first insertion section 211 located in the stator slot 11 gradually increases outward along the radial direction of the stator core 1.

[0044] With the number of first insertion segments 211 and second insertion segments 213 accommodating each stator slot 11 being equal, the above arrangement enables the first insertion segments 211 and second insertion segments 213 to fill the internal space of the stator slot 11, thereby effectively improving the utilization rate of the stator slot 11 and effectively improving the power and efficiency of the flat wire motor.

[0045] For example, the first insertion segment 211 and the second insertion segment 213, which are arranged circumferentially along the stator core 1 in the same stator slot 11, are in close contact with each other, and their opposite sides are in close contact with the opposite sides of the stator slot 11 along the circumferential direction of the stator core 1.

[0046] Alternatively, the stator teeth 12 can be rectangular, and the stator slots 11 can be fan-shaped slots whose width gradually increases radially outward from the stator core 1. The circumferential dimensions of any position of the first insertion section 211 within the stator slot 11 are all equal in the stator core 1. In this case, all U-shaped wires 21 have the same size, resulting in lower manufacturing difficulty and cost.

[0047] In some embodiments, such as Figure 7 As shown, the stator slot 11 is a rectangular slot, and the stator tooth 12 is a fan-shaped tooth whose width gradually increases outward along the radial direction of the stator core 1. The first insertion section 211 located in the stator slot 11 has a rectangular cross-section with the same size at any position in its extension direction.

[0048] With the number of first insertion segments 211 and second insertion segments 213 accommodating each stator slot 11 being equal, the above arrangement enables the first insertion segments 211 and second insertion segments 213 to fill the internal space of the stator slot 11, thereby effectively improving the utilization rate of the stator slot 11 and effectively improving the power and efficiency of the flat wire motor.

[0049] For example, in each group of U-shaped lines 21, the dimensions of multiple first intermediate segments 212 along the circumferential direction of the stator core 1 gradually increase outward along the radial direction of the stator core 1, so that the multiple first intermediate segments 212 can be adapted to different regions of the corresponding fan-shaped stator teeth 12 along the radial direction of the stator core 1.

[0050] In some embodiments, the stator winding 2 defines a U-phase winding, a V-phase winding, and a W-phase winding. Each of the U-phase winding, V-phase winding, and W-phase winding includes a plurality of phase-splitting windings 23 arranged circumferentially along the stator core 1. Each phase-splitting winding 23 includes at least two sets of adjacent U-shaped wires 21. The stator winding 2 also includes interphase bridging wires 22. In each of the U-phase winding, V-phase winding, and W-phase winding, adjacent two phase-splitting windings 23 are connected by interphase bridging wires 22.

[0051] This means that each of the U-phase, V-phase, and W-phase windings is split into multiple phase windings 23 arranged circumferentially along the stator core 1, which can effectively improve the magnetic field distribution, reduce harmonic content, and also effectively improve motor efficiency and power density.

[0052] like Figure 4 As shown, taking the U-phase winding as an example, it includes four phase windings 23. Each phase winding 23 includes three sets of U-shaped lines 21. The four phase windings 23 are connected in series through three phase-to-phase bridging lines 22. The two phase windings 23 located at the edge form U-terminals.

[0053] For example, taking a stator with 48 teeth 12, the U-shaped wires 21 on teeth 1-4 can be connected to form the first phase winding 23 of the U phase, the U-shaped wires 21 on teeth 13-16 can be connected to form the second phase winding 23 of the U phase, the U-shaped wires 21 on teeth 25-28 can be connected to form the third phase winding 23 of the U phase, and the U-shaped wires 21 on teeth 37-40 can be connected to form the fourth phase winding 23 of the U phase.

[0054] The U-shaped wire 21 on teeth 5-8 is connected to the first phase winding 23 of phase V; the U-shaped wire 21 on teeth 17-20 is connected to the second phase winding 23 of phase V; the U-shaped wire 21 on teeth 29-32 is connected to the third phase winding 23 of phase V; and the U-shaped wire 21 on teeth 41-44 is connected to the fourth phase winding 23 of phase V.

[0055] The U-shaped wire 21 on teeth 9-12 is connected to the first phase winding 23 of phase W; the U-shaped wire 21 on teeth 21-24 is connected to the second phase winding 23 of phase W; the U-shaped wire 21 on teeth 33-36 is connected to the third phase winding 23 of phase W; and the U-shaped wire 21 on teeth 45-48 is connected to the fourth phase winding 23 of phase W.

[0056] The wire ends of the first, fifth, and ninth teeth form the motor UVW wire, which connects to the motor controller.

[0057] Alternatively, in at least two of the phase windings 23 of each of the U-phase winding, V-phase winding and W-phase winding, two adjacent phase windings 23 may also be connected in parallel or in series-parallel via phase-to-phase bridging lines 22.

[0058] In addition, each of the U-phase winding, V-phase winding and W-phase winding may include only one phase winding 23, and each phase winding 23 may include only one set of U-shaped wires 21.

[0059] In some embodiments, the phase-to-phase bridge line 22 includes a first connecting segment, a second intermediate segment, and a second connecting segment connected in sequence. The first connecting segment and the second connecting segment are both located on the side of the stator core 1 away from the first intermediate segment 212 and are respectively welded to the side of the first insertion segment 211 and the second insertion segment 213. The second intermediate segment is located on the inner circumference side, the outer circumference side, or the side away from the first intermediate segment 212 of the stator core 1.

[0060] The first connecting section and the second connecting section are respectively welded to the sides of the first insertion section 211 and the second insertion section 213, effectively preventing the first connecting section and the second connecting section from excessively occupying the axial dimension of the flat wire motor. Setting the second intermediate section on the inner or outer circumference of the stator core 1 can further reduce the axial dimension of the flat wire motor, resulting in less axial space occupied by the motor shaft when used as a hub motor, thus improving the aesthetics of the vehicle. Alternatively, the second intermediate section can be set on the side of the stator core 1 opposite to the first intermediate section 212, thereby effectively preventing the phase-to-phase bridge wire 22 from encroaching on the radial space of the stator core 1, effectively reducing the radial dimension of the flat wire motor.

[0061] In some embodiments, each phase winding 23 includes at least three sets of U-shaped wires 21, wherein the middle set of U-shaped wires 21 is bent and connected to a portion of a first insertion segment 211 of an adjacent set of U-shaped wires 21 in a direction closer to each other through a portion of a first insertion segment 211, and is bent and connected to a portion of a second insertion segment 213 of an adjacent set of U-shaped wires 21 in a direction closer to each other through a portion of a second insertion segment 213.

[0062] Therefore, the two sets of U-shaped wires 21 can be connected in series without the need for other windings. The number of parts in the stator winding 2 is reduced, the assembly efficiency of the stator winding 2 is higher, and the cost is lower.

[0063] For example, such as Figure 4 and Figure 5 As shown, in each phase winding 23, two adjacent sets of U-shaped wires 21 are connected in series.

[0064] The mobility scooter according to embodiments of the present invention includes a flat wire motor as described in any of the above embodiments.

[0065] The technical advantages of the mobility scooter according to the present invention are the same as those of the flat wire motor in the above embodiments, and will not be repeated here.

[0066] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 a limitation of this utility model.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0069] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0070] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0071] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A flat wire motor, characterized by, include: Stator core (1), the stator core (1) includes a plurality of stator teeth (12) arranged at intervals along its circumference, and a stator slot (11) is defined between any two adjacent stator teeth (12); Stator winding (2), the stator winding (2) includes multiple sets of U-shaped wires (21), the number of sets of U-shaped wires (21) is equal to the number of stator teeth (12) and corresponds one-to-one, each set of U-shaped wires (21) includes multiple U-shaped wires (21) arranged in sequence along the radial direction of the stator core (1), the U-shaped wires (21) include a first insertion section (211), a first intermediate section (212) and a second insertion section (213) connected in sequence, the first insertion section (211) and the second insertion section (213) are respectively located in two adjacent stator slots (11) and arranged in the circumferential direction of the stator core (1); In two adjacent U-shaped lines (21) of the same group, the free end of the first insertion segment (211) in one U-shaped line (21) is bent to form a first welded part (2111), and the free end of the second insertion segment (213) in the other U-shaped line (21) is bent to form a second welded part (2131), and the first welded part (2111) and the second welded part (2131) are connected.

2. The flat wire motor according to claim 1, characterized in that In the same group of U-shaped lines (21), the first welded portion (2111) of one U-shaped line (21) and the second welded portion (2131) of the other U-shaped line (21) are arranged and connected along the circumference of the stator core (1).

3. The flat wire motor of claim 1, wherein In each group of U-shaped lines (21), all the first welded parts (2111) are arranged in sequence along the radial direction of the stator core (1), and all the second welded parts (2131) are arranged in sequence along the radial direction of the stator core (1).

4. The flat wire motor of claim 1, wherein Multiple sets of the U-shaped wires (21) are arranged sequentially along the circumference of the stator core (1).

5. The flat wire motor of claim 1, wherein The stator teeth (12) are rectangular teeth, and the stator slots (11) are fan-shaped slots whose width gradually increases outward along the radial direction of the stator core (1). The portion of the first insertion section (211) located within the stator slot (11) has the same cross-sectional size and shape at any position in its extension direction. The portion of the first insertion segment (211) located in the stator slot (11) has a circumferential dimension in the stator core (1) that gradually increases radially outward from the stator core (1), or the portion of the first insertion segment (211) located in the stator slot (11) has a circumferential dimension in the stator core (1) that is at any position.

6. The flat wire motor of claim 1, wherein The stator slot (11) is a rectangular slot, and the stator tooth (12) is a fan-shaped tooth whose width gradually increases outward along the radial direction of the stator core (1). The portion of the first insertion section (211) located in the stator slot (11) has a rectangular cross-section with the same size at any position in its extension direction.

7. A flat wire motor according to any of claims 1-6, characterized in that The stator winding (2) defines a U-phase winding, a V-phase winding and a W-phase winding, each of the U-phase winding, the V-phase winding and the W-phase winding includes a plurality of phase windings (23) arranged circumferentially along the stator core (1), each phase winding (23) including at least two sets of U-shaped wires (21) arranged adjacent to each other; The stator winding (2) further includes an interphase bridging line (22), and among the multiple phase windings (23) of each of the U-phase winding, the V-phase winding and the W-phase winding, two adjacent phase windings (23) are connected by the interphase bridging line (22).

8. The flat wire motor of claim 7, wherein The phase-to-phase bridge line (22) includes a first connecting section, a second intermediate section and a second connecting section connected in sequence. The first connecting section and the second connecting section are both located on the side of the stator core (1) away from the first intermediate section (212) and are respectively welded to the side of the first insertion section (211) and the second insertion section (213). The second intermediate section is located on the inner circumference, outer circumference or side away from the first intermediate section (212) of the stator core (1).

9. The flat wire motor of claim 7, wherein Each of the phase windings (23) includes at least three sets of the U-shaped wires (21), wherein the middle set of the U-shaped wires (21) is bent and connected to each other by a portion of a first insert segment (211) and a portion of a first insert segment (211) in an adjacent set of the U-shaped wires (21), and is bent and connected to each other by a portion of a second insert segment (213) and a portion of a second insert segment (213) in an adjacent set of the U-shaped wires (21).

10. A scooter characterized in that, Including the flat wire motor according to any one of claims 1-9.

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