Stator, electric machine and method for manufacturing stator for electric machine

Abstract

The invention provides a stator for an electric machine. The stator includes a stator core having an annular yoke and a plurality of teeth, a plurality of stator windings disposed on the plurality of teeth and each having a terminal, an insulator disposed on or adjacent to the yoke, and a conductive bar disposed in the insulator and including winding tabs exposed from the insulator. The terminals of the plurality of stator windings are connected to the winding joints of the conductive strips. According to the invention, the wiring process of a plurality of stator windings during the manufacturing of the motor can be simplified, the wiring quality can be improved, and the waste of wires can be reduced or even avoided, thereby improving the production efficiency of the stator and reducing the cost. The invention further provides a motor comprising the stator and a method for manufacturing the stator.

Description

Technical Field

[0001] The present application generally relates to the technical field of electric motors, and more particularly to a stator for an electric motor and an electric motor comprising such a stator. The present application also relates to a method for manufacturing a stator for an electric motor. Background Art

[0002] Electric motors are widely used in applications such as power generation and drive, and operate by utilizing the interaction of magnetic fields of a rotor and a stator rotating relative to each other. Figure 1A and Figure 1B A conventional wheel hub motor 1 is schematically shown. Figure 1A and Figure 1B As shown, the hub motor 1 includes a rotor 1a, a stator 5 and a shaft 3 defining a rotation axis 2. The rotor 1a includes a housing 4 and a rotor magnet 6, and the housing 4 is rotatably mounted on the shaft 3. The stator 5 is disposed in the housing 4 and fixed on the shaft 3. The rotor magnet 6 is disposed on the inner wall of the housing 4 around the stator 5. The stator 5 includes a stator core 51, which has an annular yoke 51a and a plurality of teeth 51b extending from the yoke 51a in a radially outward direction and spaced apart from each other in the circumferential direction. The stator winding 52 is wound on the teeth 51b of the stator core 51. When the stator winding 52 is energized, the rotor magnet 6 can drive the housing 4 to rotate around the rotation axis 2 on the shaft 3 through the interaction of its magnetic field with the magnetic field of the stator winding 52.

[0003] During the manufacture of the hub motor 1, after the stator winding 52 is wound on the teeth 51b of the stator core 51, the stator winding 52 needs to be trimmed and welded for wiring, for example, the terminals (not shown) of the stator winding 52 need to be connected to each other and / or to the power supply cable 7. On the one hand, in this wiring process, it is necessary to leave enough length for the terminals of the stator winding 52 to ensure smooth wiring. These redundant parts will be cut off and discarded during wiring, resulting in a large amount of wire waste. On the other hand, skilled technical workers are required to identify the winding sequence for wiring, otherwise it is easy to cause incorrect wiring. Therefore, the existing wiring process of the stator 5 wastes wires, is complicated and time-consuming, and has a high error rate.

[0004] Therefore, there is a need to improve the existing stator and its manufacturing method. Summary of the invention

[0005] The present application aims to provide an improved stator for a motor and a manufacturing method thereof, so as to overcome at least one of the above-mentioned defects of the existing stator.

[0006] In one aspect, the present application provides a stator for a motor. The stator comprises: a stator core, the stator core comprising an annular yoke, and a plurality of teeth extending radially from the yoke and spaced apart from each other in the circumferential direction; a plurality of stator windings arranged on the plurality of teeth, each of the stator windings comprising a terminal; an insulating member, the insulating member being arranged on the yoke or being arranged adjacent to the yoke; and a conductive bar, the conductive bar being arranged in the insulating member and comprising a winding joint exposed from the insulating member. The terminal ends of the plurality of stator windings are connected to the winding joints of the conductive bar.

[0007] In some embodiments, the plurality of stator windings are configured as three-phase windings and include a U-phase winding, a V-phase winding, and a W-phase winding, and the terminal of each of the U-phase winding, the V-phase winding, and the W-phase winding includes an input terminal and an output terminal; the conductive strip includes a first conductive strip, a second conductive strip, a third conductive strip, and a fourth conductive strip, and the first conductive strip, the second conductive strip, the third conductive strip, and the fourth conductive strip are electrically insulated from each other by the insulating member, and each of the first conductive strip, the second conductive strip, and the third conductive strip also includes a conductive strip from The insulating member exposes a cable joint, which is configured to be used for connecting a power supply cable; and the input terminal of the U-phase winding is connected to the winding joint of the first conductive strip, the input terminal of the V-phase winding is connected to the winding joint of the second conductive strip, the input terminal of the W-phase winding is connected to the winding joint of the third conductive strip, and the output terminal of the U-phase winding, the output terminal of the V-phase winding and the output terminal of the W-phase winding are connected to the winding joint of the fourth conductive strip, so that the multiple stator windings are configured to be star-connected.

[0008] In one of these embodiments, each of the U-phase winding, the V-phase winding and the W-phase winding includes N parallel branches, wherein N is an integer greater than 1, and each branch includes an input terminal and an output terminal; the number of the first conductive strips is one, the number of the second conductive strips is one, the number of the third conductive strips is one, and the number of the fourth conductive strips is N; and the input terminals of the N branches of the U-phase winding are connected to the first conductive strip, the input terminals of the N branches of the V-phase winding are connected to the second conductive strip, the input terminals of the N branches of the W-phase winding are connected to the third conductive strip, and the output terminals of each branch of the U-phase winding and the output terminals of a corresponding branch of the V-phase winding and the output terminals of a corresponding branch of the W-phase winding are connected to a corresponding one of the N fourth conductive strips.

[0009] In some embodiments, the multiple stator windings are configured as three-phase windings and include a U-phase winding, a V-phase winding and a W-phase winding, and the terminal of each of the U-phase winding, the V-phase winding and the W-phase winding includes an input terminal and an output terminal; the conductive strips include a first conductive strip, a second conductive strip and a third conductive strip, the first conductive strip, the second conductive strip and the third conductive strip are electrically insulated from each other by the insulating member, and each of the first conductive strip, the second conductive strip and the third conductive strip also includes a cable connector exposed from the insulating member, and the cable connector is configured to be used for connecting a power supply cable; and the input terminal of the U-phase winding and the output terminal of the W-phase winding are connected to the winding connector of the first conductive strip, the input terminal of the V-phase winding and the output terminal of the U-phase winding are connected to the winding connector of the second conductive strip, and the input terminal of the W-phase winding and the output terminal of the V-phase winding are connected to the winding connector of the third conductive strip, so that the multiple stator windings are configured to be connected in a triangle.

[0010] In one of these embodiments, each of the U-phase winding, the V-phase winding and the W-phase winding includes N parallel branches, wherein N is an integer greater than 1, and each branch includes an input terminal and an output terminal; the number of the first conductive strips is one, the number of the second conductive strips is one, and the number of the third conductive strips is one; and the input terminals of the N branches of the U-phase winding and the output terminals of the N branches of the W-phase winding are connected to the first conductive strip, the input terminals of the N branches of the V-phase winding and the output terminals of the N branches of the U-phase winding are connected to the second conductive strip, and the input terminals of the N branches of the W-phase winding and the output terminals of the N branches of the V-phase winding are connected to the third conductive strip.

[0011] In some embodiments, the winding joint includes a first claw and a second claw, the first claw and the second claw defining a groove therebetween, the terminal being welded to the winding joint in the groove.

[0012] In some embodiments, the cable connector comprises a bolt receiving portion, so that the power supply cable can be fixed to the cable connector by bolts.

[0013] In some embodiments, the winding joints of different ones of the conductive strips are respectively located on imaginary circular rings with different diameters on the axial outer side of the insulating member.

[0014] In some embodiments, the conductive strips are in the form of arc-shaped strips.

[0015] In some embodiments, the remaining portion of the conductive bar except the winding connection and the cable connection is embedded in the insulating member.

[0016] In some embodiments, the insulating member includes a first annular portion disposed on an axial side of the yoke portion, and a plurality of fingers extending from the first annular portion along the radial direction and spaced apart from each other in the circumferential direction, each of the plurality of fingers being disposed on an axial end of a corresponding one of the plurality of tooth portions of the stator core to space the tooth portion apart from the corresponding stator winding at the axial end.

[0017] In some embodiments, the yoke portion includes a first radial side and a second radial side opposite to each other in the radial direction, and the plurality of tooth portions extend from the first radial side along the radial direction; the stator also includes a metal bracket, the metal bracket including an annular support portion and a retaining flange extending from an axial end of the support portion along the radial direction, the support portion supports the yoke portion on the second radial side of the yoke portion, and the retaining flange retains the stator core on the axial side of the yoke portion; and the insulating member also includes a second annular portion having a first annular segment and a second annular segment, the first annular segment extends from the first annular segment along the radial direction to cover the retaining flange, and the second annular segment extends from the first annular segment along the axial direction to a surface of the support portion facing away from the second radial side.

[0018] In some embodiments, the insulator further comprises a first fixing feature disposed on the second annular segment, and the metal bracket comprises a second fixing feature, the first fixing feature cooperating with the second fixing feature so that the insulator is fixed to the metal bracket.

[0019] In some embodiments, the first radial side is a radially outer side of the yoke and the second radial side is a radially inner side of the yoke.

[0020] In some embodiments, at least some of the conductive strips are disposed in the second annular segment.

[0021] In some embodiments, the yoke includes a first axial side and a second axial side opposite to each other in the axial direction, and the insulator is disposed on the yoke on the first axial side or the second axial side.

[0022] In some embodiments, the yoke includes a first axial side and a second axial side opposite to each other in the axial direction, the insulating member includes a first insulating member arranged on the yoke on the first axial side and a second insulating member arranged on the yoke on the second axial side, some of the conductive strips are arranged in the first insulating member, and other of the conductive strips are arranged in the second insulating member.

[0023] In another aspect, the present application provides an electric motor, comprising: the aforementioned stator, at least some of the conductive bars of the stator further comprising cable connectors exposed from the insulating member and configured to be connected to a power supply cable; and a power supply cable connected to the cable connector.

[0024] In some embodiments, the motor is a hub motor and includes: a rotor including a housing; and a shaft extending axially through the housing and the stator. The stator is disposed in the housing and fixed on the shaft, and the housing is rotatably mounted on the shaft.

[0025] In another aspect, the present application provides a method for manufacturing a stator for an electric motor. The method includes: providing a stator core, an insulator, a conductive bar, and a plurality of stator windings, wherein the stator core includes an annular yoke, and a plurality of teeth extending radially from the yoke and spaced apart from each other in the circumferential direction, each of the stator windings includes a terminal, the conductive bar is disposed in the insulator and includes a winding joint exposed from the insulator; the insulator is disposed on or adjacent to the yoke; the plurality of stator windings are disposed on the plurality of teeth; and the terminals of the plurality of stator windings are connected to the winding joints of the conductive bar.

[0026] In some embodiments, the plurality of stator windings are configured as three-phase windings and include a U-phase winding, a V-phase winding, and a W-phase winding, and the terminal of each of the U-phase winding, the V-phase winding, and the W-phase winding includes an input terminal and an output terminal; the conductive strip includes a first conductive strip, a second conductive strip, a third conductive strip, and a fourth conductive strip, and the first conductive strip, the second conductive strip, the third conductive strip, and the fourth conductive strip are electrically insulated from each other by the insulating member, and each of the first conductive strip, the second conductive strip, and the third conductive strip further includes a cable connector exposed from the insulating member, and the cable connector includes a first conductive strip, a second conductive strip, a third conductive strip, and a fourth conductive strip. The cable connector is configured to connect a power supply cable; and connecting the terminals of the multiple stator windings to the winding connectors of the conductive strips includes connecting the input terminal of the U-phase winding to the winding connector of the first conductive strip, connecting the input terminal of the V-phase winding to the winding connector of the second conductive strip, connecting the input terminal of the W-phase winding to the winding connector of the third conductive strip, and connecting the output terminal of the U-phase winding, the output terminal of the V-phase winding and the output terminal of the W-phase winding to the winding connector of the fourth conductive strip, so that the multiple stator windings are configured into a star connection.

[0027] In some embodiments, the plurality of stator windings are configured as three-phase windings and include a U-phase winding, a V-phase winding, and a W-phase winding, and the terminal of each of the U-phase winding, the V-phase winding, and the W-phase winding includes an input terminal and an output terminal; the conductive strip includes a first conductive strip, a second conductive strip, and a third conductive strip, the first conductive strip, the second conductive strip, and the third conductive strip are electrically insulated from each other by the insulating member, and each of the first conductive strip, the second conductive strip, and the third conductive strip further includes a cable connector exposed from the insulating member, and the cable connector includes a first conductive strip, a second conductive strip, and a third conductive strip. The cable connector is configured to connect a power supply cable; and the connecting terminals of the multiple stator windings to the winding connectors of the conductive strips include connecting the input terminal of the U-phase winding and the output terminal of the W-phase winding to the winding connector of the first conductive strip, connecting the input terminal of the V-phase winding and the output terminal of the U-phase winding to the winding connector of the second conductive strip, and connecting the input terminal of the W-phase winding and the output terminal of the V-phase winding to the winding connector of the third conductive strip, so that the multiple stator windings are configured to be connected in a triangle.

[0028] In some embodiments, the insulating member includes a first annular portion and a plurality of fingers extending from the first annular portion along the radial direction and spaced apart from each other in the circumferential direction; and arranging the insulating member on the yoke portion includes arranging the first annular portion on an axial side of the yoke portion, and arranging each of the plurality of fingers on an axial end of a corresponding one of the plurality of tooth portions of the stator core to space the tooth portion from the corresponding stator winding at the axial end.

[0029] In some embodiments, the yoke includes a first radial side and a second radial side opposite to each other in the radial direction, and the plurality of teeth extend from the first radial side along the radial direction; the stator also includes a metal bracket, the metal bracket including an annular support portion, and a retaining flange extending from an axial end of the support portion along the radial direction; the insulating member also includes a second annular portion having a first annular segment and a second annular segment, the first annular segment extending from the first annular segment along the radial direction and configured to cover the retaining flange, the second annular segment extending from the first annular segment along the axial direction and configured to extend to a surface of the support portion away from the second radial side; the method also includes supporting the yoke on the second radial side of the yoke by the support portion, and retaining the stator core on the axial side of the yoke by the retaining flange; and arranging the insulating member on the yoke also includes arranging the first annular segment on the retaining flange, and arranging the second annular segment on the surface of the support portion away from the second radial side.

[0030] These techniques may be used alone or in any suitable combination.The foregoing summary is provided by way of illustration and is not meant to be limiting.

[0031] According to the present application, the wiring process of multiple stator windings during the manufacture of a motor can be simplified and the wiring quality can be improved, and wire waste can be reduced or even avoided, thereby improving the production efficiency of the stator and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and other aspects of the present application will be more thoroughly understood and appreciated in conjunction with the accompanying drawings. It should be noted that the drawings are schematic only and are not drawn to scale. In different drawings, the same components or parts are represented by the same reference numerals. In addition, for the sake of brevity, not all components or parts of the motor and its stator and rotor according to the present application are shown or marked in the drawings. It should be understood that the size, proportional relationship and number of components of the components or parts in the drawings are not intended to limit the present application. In the drawings:

[0033] Figure 1AThe present invention is a cross-sectional view of an existing wheel hub motor taken along the axial direction;

[0034] Figure 1B yes Figure 1A An exploded view of a stator of a hub motor, wherein a stator winding of the stator is removed;

[0035] Figure 2A is a perspective view of a stator according to some embodiments of the present application;

[0036] Figure 2B yes Figure 2A an exploded view of a stator of the invention, wherein the stator windings of the stator are removed;

[0037] Figure 2C yes Figure 2A A front view of a stator;

[0038] Figure 2D It is along Figure 2C A cross-sectional view taken along line II;

[0039] Figure 2E yes Figure 2D Magnified view of the dotted circled area “2E” in FIG.

[0040] Figure 2F yes Figure 2D Magnified view of the dotted circled area “2F” in FIG.

[0041] Figure 3A yes Figure 2A A perspective view of components of a stator including an insulator and a conductive bar;

[0042] Figure 3B yes Figure 3A A front view of a component;

[0043] Figure 3C It is along Figure 3B A cross-sectional view taken along line II-II;

[0044] Figure 4A yes Figure 2A A front view of an insulating member;

[0045] Figure 4B yes Figure 4A A side view of an insulating member;

[0046] Figure 5A yes Figure 3A A three-dimensional view of a first conductive strip of a component;

[0047] Figure 5B yes Figure 3A A three-dimensional view of a second conductive strip of a component;

[0048] Figure 5C yes Figure 3A A three-dimensional view of a third conductive strip of the component;

[0049] Figure 5D yes Figure 3A A three-dimensional view of a fourth conductive strip of the component;

[0050] Figure 6 It is schematically shown Figure 2A The stator winding of the stator is configured as a star connection wiring diagram through conductive bars;

[0051] Figure 7 is a wiring diagram schematically showing that stator windings of a stator according to other embodiments of the present application are configured as a delta connection through conductive bars; and

[0052] Figure 8 is a block diagram schematically illustrating a method for manufacturing a stator according to some embodiments of the present application. DETAILED DESCRIPTION

[0053] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. It should be understood that these embodiments are not intended to limit the present application in any way. In addition, the features in the embodiments of the present application may be combined with each other in the absence of conflict.

[0054] Figures 2A to 6 The stator 100 according to some embodiments of the present application is schematically depicted. The stator 100 may also be referred to as a "stator assembly". The stator 100 may be used Figure 1A In the wheel hub motor 1 shown, instead of Figure 1A and Figure 1B The wheel hub motor 1 is an outer rotor motor. The wheel hub motor 1 can be used in a two-wheel electric vehicle, such as an E-scooter. Figure 1A The embodiment of the hub motor 1 is shown to describe the configuration of the stator 100 , but it should be understood that the present application is not limited thereto.

[0055] Similar to the stator 5, the stator 100 may be disposed in the housing 4 of the rotor 1a of the wheel hub motor 1 and fixed on the shaft 3. The housing 4 may be mounted on the shaft 3 in a manner that allows it to rotate relative to the stator 100 around the rotation axis 2. The stator 100 may be configured such that the rotor magnet 6 of the rotor 1a can drive the housing 4 to rotate around the rotation axis 2 on the shaft 3 through the interaction of its magnetic field with the magnetic field of the stator winding 300 of the stator 100. The central axis of the stator 100 coincides with the rotation axis 2. Therefore, in FIG. 2B to FIG. 2D , FIG. 3B to FIG. 3C and FIG. 4A to FIG. 4BThe reference numeral "2" indicates the central axis of the stator 100. In the present application, unless otherwise specified, "axial" refers to the extension direction of the rotation axis 2, "radial" refers to the radial direction relative to the rotation axis 2, and "circumferential" refers to the circumferential direction relative to the rotation axis 2, that is, the direction around the rotation axis 23. The radial direction includes a radially outward direction and a radially inward direction, wherein the radially outward direction refers to a radial direction pointing away from the rotation axis 2, and the radially inward direction refers to a radial direction pointing toward the rotation axis 2.

[0056] like FIG. 2A to FIG. 5D As shown, the stator 100 includes a stator core 200 , a plurality of stator windings 300 , a member 400 , an insulating plate 500 , a metal bracket 600 , and a shaft tube 700 .

[0057] like Figure 2B As best shown, the stator core 200 includes an annular yoke 210 and a plurality of teeth 220 extending radially outward from the yoke 210 and spaced apart from each other in the circumferential direction. The central axis of the yoke 210 coincides with the central axis of the stator 100. Each adjacent two teeth 220 of the plurality of teeth 220 define a stator slot 230 for accommodating the stator winding 300 therebetween. The stator core 200 may be an integral stator core or a segmented stator core. The stator core 200 may be formed by a plurality of laminations. The laminations may be made of ferromagnetic material. Ferromagnetic materials suitable for manufacturing laminations include, but are not limited to, ferrosilicon alloys and aluminum-iron alloys. A plurality of laminations are aligned and interconnected along the axial direction and form a lamination stack in a manner that one is stacked on top of another. The stator slot 230 may extend over the entire axial range of the lamination stack.

[0058] like FIG. 2B to FIG. 2F As shown, the yoke 210 includes a first axial side 211 and a second axial side 212 opposite to each other in the axial direction, and a first radial side 213 and a second radial side 214 opposite to each other in the radial direction. The first radial side 213 is the radial outer side of the yoke 210, and the second radial side 214 is the radial inner side of the yoke 210. A plurality of teeth 220 extend from the first radial side 213 of the yoke 210 in a radially outward direction. Figure 2B As best shown, each of the plurality of teeth 220 includes first and second axial ends 221 and 222 axially opposite to each other, and first and second walls 223 and 224 circumferentially opposite to each other. The first and second walls 223 and 224 each extend between the first and second axial ends 221 and 222.

[0059] The tooth portion 220 may have a length, a width, and a thickness. In the present application, unless otherwise specified, the "length" of the tooth portion 220 refers to the dimension of the tooth portion 220 extending in the radial direction (in this embodiment, the distance that the tooth portion 220 extends from the first radial side 213 of the yoke 210 in the radially outward direction), the "width" refers to the dimension of the tooth portion 220 extending in the circumferential direction (in this embodiment, the dimension of the tooth portion 220 between the first wall 223 and the second wall 224), and the "thickness" refers to the dimension of the tooth portion 220 extending in the axial direction (in this embodiment, the dimension of the tooth portion 220 between the first axial end 221 and the second axial end 222).

[0060] The yoke 210 may have an inner diameter, an outer diameter, and a thickness. In the present application, unless otherwise specified, the "thickness" of the yoke 210 refers to the dimension of the yoke 210 extending along the axial direction (i.e., the dimension of the yoke 210 between the first radial side 213 and the second radial side 214), the "inner diameter" of the yoke 210 refers to the vertical distance from the rotation axis 2 to the second radial side 214, and the "outer diameter" of the yoke 210 refers to the vertical distance from the rotation axis 2 to the first radial side 213.

[0061] like Figure 2A and Figure 2C to Figure 2F As shown, a plurality of stator windings 300 are arranged on a plurality of teeth 220 of the stator core 200. For example, a plurality of stator windings 300 may be wound on a plurality of teeth 220 of the stator core 200. The stator winding 300 may be formed by an elongated electrical conductor such as a copper wire. The cross-section of the electrical conductor may be circular or rectangular. The electrical conductor is arranged in the stator slot 230 and extends along the stator slot 230. According to the selected wiring pattern, the stator winding 300 may extend in a selected number of the plurality of stator slots 230. An insulator insert such as insulating paper may be arranged between the electrical conductor and the teeth 220 to ensure that the stator winding 300 is electrically insulated relative to the stator core 200. As will be described below, each stator winding 300 may include a terminal.

[0062] like Figure 2B and Figure 2DAs shown, the insulating plate 500 includes an annular body 510 and a plurality of fingers 520 extending from the annular body 510 in a radially outward direction and spaced apart from each other in the circumferential direction. The insulating plate 500 may be disposed on the stator core 200 to ensure that the stator winding 300 is electrically insulated relative to the stator core 200. Specifically, the annular body 510 of the insulating plate 500 may be disposed on the second axial side 212 of the yoke 210, and the central axis of the annular body 510 may coincide with the rotation axis 2 and the central axis of the stator 100, and each of the plurality of fingers 520 may be disposed on the second axial end 222 of a corresponding one of the plurality of teeth 220, thereby forming an electrical insulating portion between the stator winding 300 and the stator core 200 at the second axial side 212 of the yoke 210 and the second axial end 222 of the teeth 220. The annular body 510 may partially or completely overlap the second axial side 212 of the yoke 210 in the axial direction. Each finger 520 may partially or completely overlap the second axial end 222 of the corresponding tooth 220 in the axial direction. The dimension (i.e., thickness) of the annular body 510 extending in the axial direction may be much smaller than the thickness of the yoke 210, for example, it may be equal to or less than the thickness of a single lamination forming the stator core 200. The dimension (i.e., thickness) of the finger 520 extending in the axial direction may be much smaller than the thickness of the tooth 220, for example, it may be equal to or less than the thickness of a single lamination forming the stator core 200. The dimension (i.e., width) of the finger 520 extending in the circumferential direction may be equal to or slightly smaller than the width of the tooth 220. The dimension (i.e., width) of the finger 520 extending in the radial direction may be equal to or slightly smaller than the length of the tooth 220. It should be understood that the dimensions of the annular body 510 and the finger 520 may be selected according to the insulation requirements. The insulating plate 500 may be made of any suitable insulating material (e.g., plastic) in the art. The insulating plate 500 may be formed by any suitable process such as injection molding.

[0063] like FIG. 2A to FIG. 5D As shown, the component 400 includes an insulating member 410 and a conductive strip disposed in the insulating member 410. The insulating member 410 may be made of any suitable insulating material (eg, plastic) in the art. The conductive strip may include, for example, FIG. 5A to FIG. 5DThe first conductive strip 421, the second conductive strip 422, the third conductive strip 423 and the fourth conductive strip 424 shown. The conductive strip can be made of any suitable conductive material in the art (such as a metal material such as copper or a copper alloy). The conductive strip can be in the form of an arc strip. For example, the first conductive strip 421, the second conductive strip 422, the third conductive strip 423 and the fourth conductive strip 424 can be respectively located on imaginary circular rings with different diameters in the insulating member 140. In other words, the radius of the first conductive strip 421, the radius of the second conductive strip 422, the radius of the third conductive strip 423 and the radius of the fourth conductive strip 424 can be different from each other. It should be understood that the present application is not limited to this, and the conductive strip can also be in the form of an annular strip. The cross-section of the conductive strip can be, for example, circular, elliptical, rectangular or square. In some embodiments, the insulating member 410 can be overmolded on the conductive strip. In other embodiments, the insulating member 410 can be formed with a slot for inserting the conductive strip, and the conductive strip can be inserted in the slot. In this case, the insulating member 410 may be formed by any suitable process, such as injection molding. As will be described below, the conductive strip may include winding connections exposed from the insulating member 410.

[0064] In some embodiments, FIG. 2A to FIG. 2F As shown, the insulator 410 may be disposed on the yoke 210 of the stator core 200, and the terminal of the stator winding 300 wound on the tooth portion 220 is connected to the winding joint of the conductive bar exposed from the insulator 410. Since the conductive bar is disposed in the insulator 410, the conductive bar may be electrically insulated relative to the stator core 200.

[0065] It should be understood that in other partial embodiments, the insulator 410 may be disposed adjacent to the yoke 210 of the stator core 200 so that the terminal of the stator winding 300 wound on the teeth 220 can be connected to the winding joint of the conductive bar exposed from the insulator 410. That is, the insulator 410 may be positioned sufficiently close to the yoke 210 of the stator core 200 so that the terminal of the stator winding 300 can be connected to the winding joint of the conductive bar, but the insulator 410 is not in direct contact with the yoke 210 of the stator core 200. For example, the insulator 410 may be disposed adjacent to the yoke 210 of the stator core 200 on the axial side or radial inner side of the yoke 210.

[0066] like Figure 2A , Figure 2C and Figure 6As shown and as will be described in detail below, the terminals of the plurality of stator windings 300 are connected to the winding joints of the conductive strips of the component 400. In this way, the terminals of the plurality of stator windings 300 can be connected to each other and / or to the power supply cable 7 through the conductive strips of the component 400. For example, after the stator windings 300 are arranged on the teeth 220 of the stator core 200, the terminals of the stator windings 300 can be directly connected (e.g., welded) to the adjacent winding joints after being trimmed (if necessary). This can simplify the wiring process of the plurality of stator windings 300 during the manufacture of the motor 1 and improve the wiring quality, and can reduce or even avoid wire waste, thereby improving the production efficiency of the stator 100 and reducing costs.

[0067] In some embodiments, Figures 2A to 6 As shown, the plurality of stator windings 300 may be configured as three-phase windings, and include a U-phase winding 300U, a V-phase winding 300V, and a W-phase winding 300W ( Figure 6 ). The conductive strips of the member 400 may include a first conductive strip 421, a second conductive strip 422, a third conductive strip 423, and a fourth conductive strip 424. The first conductive strip 421, the second conductive strip 422, the third conductive strip 423, and the fourth conductive strip 424 are disposed in the insulating member 410 to be electrically insulated from each other by the insulating member 410. For example, the remaining portion of the conductive strip except for the winding joint and the cable joint (to be described below) is embedded in the insulating member 410. The connection terminals of the U-phase winding 300U, the V-phase winding 300V, and the W-phase winding 300W may be connected to the corresponding conductive strips of the first conductive strip 421, the second conductive strip 422, the third conductive strip 423, and the fourth conductive strip 424, so that the plurality of stator windings 300 are configured in a star connection.

[0068] Specifically, the connection terminals of each of the U-phase winding 300U, the V-phase winding 300V, and the W-phase winding 300W include an input connection terminal and an output connection terminal. Figure 2A and Figure 6 As shown, the connection terminals of the U-phase winding 300U include an input connection terminal 300U1 and an output connection terminal 300U2, the connection terminals of the V-phase winding 300V include an input connection terminal 300V1 and an output connection terminal 300V2, and the connection terminals of the W-phase winding 300W include an input connection terminal 300W1 and an output connection terminal 300W2. Figure 2A , Figure 2C , FIG. 3A to FIG. 3C and FIG. 5A to FIG. 5DAs shown, the first conductive bar 421 includes a winding joint 421a, the second conductive bar 422 includes a winding joint 422a, the third conductive bar 423 includes a winding joint 423a, and the fourth conductive bar 424 includes a winding joint 424a. In addition, the first conductive bar 421, the second conductive bar 422, and the third conductive bar 423 may further include cable joints 421b, 422b, and 423b exposed from the insulating member 410, respectively, and the cable joints 421b, 422b, and 423b are each configured to be connected to the power supply cable 7 ( Figure 1A The cable connector 421b of the first conductive bar 421 may be configured to connect the U-phase power supply line in the power supply cable 7, the cable connector 422b of the second conductive bar 422 may be configured to connect the V-phase power supply line in the power supply cable 7, and the cable connector 423b of the third conductive bar 423 may be configured to connect the W-phase power supply line in the power supply cable 7.

[0069] like Figure 2A , Figure 2C and Figure 6As shown, the input terminal 300U1 of the U-phase winding 300U is connected to the winding joint 421a of the first conductive strip 421, the input terminal 300V1 of the V-phase winding 300V is connected to the winding joint 422a of the second conductive strip 422, the input terminal 300W1 of the W-phase winding 300V is connected to the winding joint 423a of the third conductive strip 423, and the output terminal 300U2 of the U-phase winding 300U, the output terminal 300V2 of the V-phase winding 300V and the output terminal 300W2 of the W-phase winding 300W are connected to the winding joint 424a of the fourth conductive strip 424, so that the multiple stator windings 300 are configured in a star connection. In this way, the input terminal 300U1 of the U-phase winding 300U can be connected to the U-phase power supply line in the power supply cable 7 through the first conductive strip 421, the input terminal 300W1 of the V-phase winding 300V can be connected to the V-phase power supply line in the power supply cable 7 through the second conductive strip 422, the input terminal 300W1 of the W-phase winding 300V can be connected to the W-phase power supply line in the power supply cable 7 through the third conductive strip 423, and the output terminal 300U2 of the U-phase winding 300U, the output terminal 300V2 of the V-phase winding 300V and the output terminal 300W2 of the W-phase winding 300W can be connected to each other through the fourth conductive strip 424, so that the multiple stator windings 300 are configured in a star connection. In this way, it is possible to simplify the wiring process of the multiple stator windings 300 configured as three-phase windings during the manufacture of the motor 1 and improve the wiring quality, and it is possible to reduce or even avoid wire waste, thereby improving the production efficiency of the stator 100 and reducing costs. The component 400 can function as an electrical connector (or an electrical connection intermediary), thereby simplifying the wiring process. The first conductive strip 421, the second conductive strip 422, the third conductive strip 423, and the fourth conductive strip 424 can be respectively referred to as "U-phase conductive strip", "V-phase conductive strip", "W-phase conductive strip", and "neutral conductive strip".

[0070] In one of these embodiments, each of the U-phase winding 300U, the V-phase winding 300V, and the W-phase winding 300W includes six parallel branches. Each branch of each phase winding includes an input terminal (input terminal 300U1, input terminal 300V1, or input terminal 300W1) and an output terminal (output terminal 300U2, output terminal 300V2, or output terminal 300W2). Figure 5A and Figure 6 As best shown, the number of the first conductive strip 421 is one, and the first conductive strip 421 includes six winding connections 421a. The input terminals 300U1 of the six branches of the U-phase winding 300U are connected to the same (i.e., a shared single) first conductive strip 421. Figure 5B and Figure 6As best shown, the number of the second conductive strip 422 is one, and the second conductive strip 422 includes six winding connections 422a. The input terminals 300V1 of the six branches of the V-phase winding 300V are connected to the same (i.e., a shared single) second conductive strip 422. Figure 5C and Figure 6 As best shown, the number of third conductive strips 423 is one, and the third conductive strip 423 includes six winding connections 423a. The input terminals 300W1 of the six branches of the W-phase winding 300W are connected to the same (i.e., a shared single) third conductive strip 423. In addition, the first conductive strip 421, the second conductive strip 422, and the third conductive strip 423 each include a cable connection 421b, 422b, and 423b. The number of fourth conductive strips 424 is six, and the third conductive strip 424 includes six winding connections 423a. Figure 5D One of the fourth conductive strips 424 is shown in FIG. 1 , and the structures of the remaining five fourth conductive strips 424 can be the same as Figure 5D The structure of the fourth conductive strip 424 shown is the same or similar. Each fourth conductive strip 424 includes three winding joints 424a. Figure 6 As schematically shown in FIG. 4 , the output terminal 300U2 of each branch of the U-phase winding, the output terminal 300V2 of a corresponding branch of the V-phase winding (e.g., the same branch), and the output terminal 300W2 of a corresponding branch of the W-phase winding (e.g., the same branch) are connected to a corresponding one of the fourth conductive strips 424. That is, the output terminal 300U2 of each branch of the U-phase winding, the output terminal 300V2 of a corresponding branch of the V-phase winding, and the output terminal 300W2 of a corresponding branch of the W-phase winding are connected to the same (i.e., a shared single) fourth conductive strip 424. In this way, the U-phase winding, the V-phase winding, and the W-phase winding, each including six parallel branches, can be easily configured into a star connection through the first conductive strip 421, the second conductive strip 422, the third conductive strip 423, and the fourth conductive strip 424 of the component 400. This can simplify the wiring process of the plurality of stator windings 300 , thereby improving the production efficiency of the stator 100 and reducing the cost.

[0071] In other embodiments, each of the U-phase winding 300U, the V-phase winding 300V, and the W-phase winding 300W may include N parallel branches, where N is an integer greater than 1 (e.g., 2, 3, 4, 5, 7, 8, etc.). Each branch of each phase winding includes an input terminal (input terminal 300U1, input terminal 300V1, or input terminal 300W1) and an output terminal (output terminal 300U2, output terminal 300V2, or output terminal 300W2). In this case, the number of the first conductive strip 421 is one, the number of the second conductive strip 422 is one, the number of the third conductive strip 423 is one, and the number of the fourth conductive strip 424 is N. The input terminals 300U1 of the N branches of the U-phase winding 300U are connected to the same first conductive strip 421, the input terminals 300V1 of the N branches of the V-phase winding 300V are connected to the same second conductive strip 422, the input terminals 300W1 of the N branches of the W-phase winding 300W are connected to the same third conductive strip 423, and the output terminals 300U2 of each branch of the U-phase winding 300U and the output terminals 300V2 of a corresponding branch of the V-phase winding 300V (for example, the same branch) and the output terminals 300W2 of a corresponding branch of the W-phase winding (for example, the same branch) are connected to a corresponding one of the N fourth conductive strips 424. In this way, the U-phase winding, the V-phase winding and the W-phase winding, each including N parallel branches, can be easily configured into a star connection through the first conductive strip 421, the second conductive strip 422, the third conductive strip 423 and the fourth conductive strip 424 of the component 400. This can simplify the wiring process of the plurality of stator windings 300, thereby improving the production efficiency and reducing the cost of the stator 100. It should be understood that the number of the fourth conductive strip 424 can also be less than N, for example, the number of the fourth conductive strip 424 can be one.

[0072] In some embodiments, the U-phase winding 300U, the V-phase winding 300V, and the W-phase winding 300W may also be configured to be connected in a triangle through the component 400. Figure 7 As shown, the plurality of stator windings 300 are configured as three-phase windings and include a U-phase winding 300U, a V-phase winding 300V, and a W-phase winding 300W. The conductive strips of the component 400 include a first conductive strip 421' (whose structure can be similar to Figure 5A The structure of the first conductive strip 421 is similar to that of the first conductive strip 421 shown in FIG. 1 ), and the second conductive strip 422′ (whose structure can be similar to that of the first conductive strip 421 shown in FIG. 1 ). Figure 5B The structure of the second conductive strip 422 is similar to that of the second conductive strip 422 shown in FIG. 1 ) and the third conductive strip 423′ (whose structure can be similar to that of the Figure 5CThe structure of the third conductive strip 423 shown is similar). The first conductive strip 421', the second conductive strip 422' and the third conductive strip 423' are arranged in the insulating member 410 to be electrically insulated from each other by the insulating member 410. The connection terminals of the U-phase winding 300U, the V-phase winding 300V and the W-phase winding 300W can be connected to the corresponding conductive strips of the first conductive strip 421', the second conductive strip 422' and the third conductive strip 423', so that the plurality of stator windings 300 are configured in a delta connection.

[0073] Specifically, if Figure 7 As schematically shown, the input terminal 300U1 of the U-phase winding 300U and the output terminal 300W2 of the W-phase winding 300W are connected to the first conductive strip 421', the input terminal 300V1 of the V-phase winding 300V and the output terminal 300U2 of the U-phase winding 300U are connected to the second conductive strip 422', and the input terminal 300W1 of the W-phase winding 300W and the output terminal 300V2 of the V-phase winding 300V are connected to the third conductive strip 423', so that the plurality of stator windings are configured in a delta connection. Similar to the first conductive strip 421, the second conductive strip 422, and the third conductive strip 423, the first conductive strip 421', the second conductive strip 422', and the third conductive strip 423' may each include a winding connector (not shown) exposed from the insulating member 410 and configured to be used for connecting the terminals of the corresponding windings. Figure 7 ), and exposed from the insulating member 410 and configured to be connected to the power supply cable 7 ( Figure 1A ) of the corresponding power supply line cable connectors 421b', 422b' and 423b' (which are connected to the Figure 7 Schematically marked in ). In this way, the input terminal 300U1 of the U-phase winding 300U and the output terminal 300W2 of the W-phase winding 300W can be connected to the U-phase power supply line of the power supply cable 7 through the first conductive strip 421', the input terminal 300V1 of the V-phase winding 300V and the output terminal 300U2 of the U-phase winding 300U can be connected to the V-phase power supply line of the power supply cable 7 through the second conductive strip 422', and the input terminal 300W1 of the W-phase winding 300W and the output terminal 300V2 of the V-phase winding 300V can be connected to the W-phase power supply line of the power supply cable 7 through the third conductive strip 423', so that the multiple stator windings 300 are configured to be connected in a triangle. In this way, it is possible to simplify the wiring process of the multiple stator windings 300 configured as three-phase windings during the manufacture of the motor 1 and improve the wiring quality, and it is possible to reduce or even avoid wire waste, thereby improving the production efficiency of the stator 100 and reducing costs. The first conductive strip 421 ′, the second conductive strip 422 ′, and the third conductive strip 423 ′ may be referred to as a “U-phase conductive strip”, a “V-phase conductive strip”, and a “W-phase conductive strip”, respectively.

[0074] In one of these embodiments, similar to the case where a plurality of stator windings 300 are configured in a star connection by means of the member 400, each of the U-phase winding 300U, the V-phase winding 300V, and the W-phase winding 300W may include N parallel branches, where N is an integer greater than 1 (e.g., 2, 3, 4, 5, 6, 7, 8, etc.). Each branch of each phase includes an input terminal (input terminal 300U1, input terminal 300V1, or input terminal 300W1) and an output terminal (output terminal 300U2, output terminal 300V2, or output terminal 300W2). In this case, the number of the first conductive strip 421' is one, the number of the second conductive strip 422' is one, and the number of the third conductive strip 423' is one. The input terminals 300U1 of the N branches of the U-phase winding 300U and the output terminals 300W2 of the N branches of the W-phase winding 300W are connected to the same first conductive strip 421', the input terminals 300V1 of the N branches of the V-phase winding 300V and the output terminals 300U2 of the N branches of the U-phase winding 300U are connected to the same second conductive strip 422', and the input terminals 300W1 of the N branches of the W-phase winding 300W and the output terminals 300V2 of the N branches of the V-phase winding 300V are connected to the same third conductive strip 423'. In this way, the U-phase winding, the V-phase winding, and the W-phase winding, each including N parallel branches, can be easily configured into a triangle connection through the first conductive strip 421', the second conductive strip 422', and the third conductive strip 423' of the component 400. This can simplify the wiring process of the plurality of stator windings 300 , thereby improving the production efficiency of the stator 100 and reducing the cost.

[0075] In some embodiments, the winding joint of the conductive bar may include a first claw and a second claw, the first claw and the second claw defining a groove therebetween. The corresponding terminal of the stator winding may be welded to the winding joint in the groove. Specifically, for example, Figure 5AAs shown in the figure, the winding joint 421a of the first conductive strip 421 includes a first claw portion 4211a and a second claw portion 4212a. The first claw portion 4211a and the second claw portion 4212a define a groove 4213a therebetween. In the wiring process, the input terminal 300U1 of the U-phase winding 300U can be accurately and quickly positioned on the winding joint 421a through the groove 4213a, and then welded to the winding joint 421a, so that the U-phase winding 300U is electrically and mechanically connected to the first conductive strip 421. On the one hand, this structure of the winding joint 421a can improve the speed and accuracy of the wiring operation. On the other hand, this structure of the winding joint 421a can improve the welding strength of the input terminal 300U1 to the winding joint 421a, thereby improving the connection reliability. The groove 4213a can be V-shaped (as shown in the figure), U-shaped, or any other suitable shape.

[0076] like Figure 5B , Figure 5C and Figure 5D As shown, the winding joint 422a of the second conductive strip 422, the winding joint 423a of the third conductive strip 423 and the winding joint 424a of the fourth conductive strip 424 may respectively have the same structure as the winding joint 421a of the first conductive strip 421, and these same structures are not repeated here.

[0077] In some embodiments, the cable connector of the conductive strip may include a bolt receiving portion. With this structure, the power supply cable 7 can be fixed to the cable connector by bolts. Figure 5A As shown in FIG. 1 , the cable connector 421b of the first conductive bar 421 is in the form of a tab having a bolt receiving hole 4211b. The U-phase power supply line of the power supply cable 7 can be fixed to the cable connector 421b by bolts. On the one hand, this configuration can simplify the connection of the U-phase power supply line to the cable connector 421b, thereby increasing the speed of the wiring operation. On the other hand, this configuration can increase the connection strength of the U-phase power supply line to the cable connector 421b, thereby increasing the reliability of the stator 100.

[0078] like Figure 5B and Figure 5C As shown, the cable connector 422b of the second conductive strip 422 and the cable connector 423b of the third conductive strip 423 may respectively have the same structure as the cable connector 421b of the first conductive strip 421, and these same structures are not described again.

[0079] In some embodiments, FIG. 2A to FIG. 2F As shown and described above, the insulator 410 of the component 400 may be disposed on the yoke 210 of the stator core 200. FIG. 2A to FIG. 4BAs shown, the insulating member 410 includes a first annular portion 411 and a plurality of fingers 413 extending radially outward from the first annular portion 411 and spaced apart from each other in the circumferential direction. Figure 2E and Figure 2F As best shown, the first annular portion 411 is disposed on the first axial side 211 of the yoke 210 to provide electrical insulation between the stator winding 300 and the yoke 210. The central axis of the first annular portion 411 may coincide with the rotation axis 2 and the central axis of the stator 100. Each of the plurality of fingers 413 is disposed on the first axial end 221 of a corresponding one of the plurality of teeth 220 of the stator core 200 to space the tooth 220 from the corresponding stator winding 300 at the first axial end 221, thereby providing electrical insulation between the tooth 220 and the corresponding stator winding 300. In this way, the insulator 410 of the component 400 may function similarly to the insulating plate 500 to ensure that the stator winding 300 is electrically insulated relative to the stator core 200. That is, in addition to functioning as an electrical connector, the component 400 may also function as an insulating plate.

[0080] The first annular portion 411 may partially or completely overlap the first axial side 211 of the yoke 210 in the axial direction. Each finger 413 may partially or completely overlap the first axial end 221 of the corresponding tooth 220 in the axial direction. The dimension (i.e., thickness) of the first annular portion 411 extending in the axial direction may be much smaller than the thickness of the yoke 210, for example, it may be equal to or less than the thickness of a single lamination forming the stator core 200. The dimension (i.e., thickness) of the finger 413 extending in the axial direction may be much smaller than the thickness of the tooth 220, for example, it may be equal to or less than the thickness of a single lamination forming the stator core 200. The dimension (i.e., width) of the finger 413 extending in the circumferential direction may be equal to or slightly smaller than the width of the tooth 220. The dimension (i.e., length) of the finger 413 extending in the radial direction may be equal to or slightly smaller than the length of the tooth 220. It should be understood that the shape and size of the first annular portion 411 and the finger 413 may be selected according to the insulation requirements.

[0081] In some embodiments, FIG. 2A to FIG. 2F As shown, the stator 100 may include a metal bracket 600. The metal bracket 600 may include an annular support portion and a retaining flange extending radially from an axial end of the support portion. The support portion may support the yoke 210 on the second radial side 214 of the yoke 210, and the retaining flange may retain the stator core 200 on the first axial side 211 and the second axial side 212 of the yoke 210. In one of these embodiments, as Figure 2BAs best shown, the metal bracket 600 may include a first bracket member 610 and a second bracket member 620. The first bracket member 610 may include a disc-shaped body 611, a central hole 612 extending through the disc-shaped body 611, a support portion 613 extending in the axial direction at a peripheral edge 611a of the disc-shaped body 611, and a retaining flange 614 extending in a radially outward direction from an axial end 613a of the support portion 613. The second bracket member 620 may include a disc-shaped body 621, a central hole 622 extending through the disc-shaped body 621, a support portion 623 extending in the axial direction (e.g., opposite to the support portion 613) at a peripheral edge 621a of the disc-shaped body 621, and a retaining flange 624 extending in a radially outward direction from an axial end 623a of the support portion 623. The disk-shaped body 611 and the disk-shaped body 621 may be fixed together by any suitable means (e.g., riveting or welding) so that the first bracket member 610 and the second bracket member 620 constitute the metal bracket 600. In this case, the center hole 612 and the center hole 622 may be aligned with each other in the axial direction. The support portion 613 and the support portion 623 may be aligned with each other and together form a support portion of the metal bracket 600 to support the yoke 210 on the second radial side 214 of the yoke 210, and the retaining flange 614 and the retaining flange 624 may together form a retaining flange of the metal bracket 600 to retain the stator core 200 on the first axial side 211 and the second axial side 212 of the yoke 210.

[0082] When assembling the stator 100, the insulating plate 500 may be first disposed on the stator core 200, and then the first bracket member 610 and the second bracket member 620 of the metal bracket 600 may be assembled to the stator core 200 from both axial sides of the stator core 200 and fixed together. The support portion 613 and the support portion 623 may support the yoke 210 on the second radial side 214 of the yoke 210, and the retaining flange 614 may engage the first axial side 211 of the yoke 210 of the stator core 200, and the retaining flange 624 may engage the insulating plate 500 located on the second axial side 212 of the yoke 210 to hold the stator core 200 and the insulating plate 500 therebetween. Subsequently, the member 400 may be disposed on the stator core 200 or disposed adjacent to the stator core 200. Specifically, the insulator 410 may be disposed on the yoke 210 of the stator core 200 or may be disposed adjacent to the yoke 210 of the stator core 200. More specifically, the first annular portion 411 of the insulator 410 may be disposed on the first axial side 211 of the yoke 210 to provide an electrical insulation portion between the stator winding 300 and the yoke 210. Subsequently, a plurality of stator windings 300 may be wound around a plurality of teeth 220, and the terminals of the stator windings 300 may be connected to the winding connections of the conductive strips, so that the stator windings 300 are configured in a star connection or a delta connection in the manner described above, or in other connection modes. Subsequently, the power supply lines of the power supply cable 7 may be connected to the corresponding conductive strips of the member 400.

[0083] like Figure 2A and Figure 2B As shown, the central hole 612 of the first bracket member 610 may be aligned with the central hole 622 of the second bracket member 620 , and the shaft tube 700 may extend through the central holes 612 and 622 and be fixed therein. Figure 1A The shaft 3 shown may extend through the shaft hole 701 of the shaft tube 700, and the stator 100 may be fixed to the shaft 3 via the shaft tube 700 (eg, via a key connection). It should be understood that in other embodiments, the shaft tube 700 may be integrally formed with the first bracket member 610 or the second bracket member 620.

[0084] In some embodiments, FIG. 2A to FIG. 4BAs shown, the insulating member 410 may further include a second annular portion 412 extending from the first annular portion 411. The second annular portion 412 may have a first annular segment 412a and a second annular segment 412b. The first annular segment 412a extends from the first annular portion 411 in a radially inward direction to cover the retaining flange 614 of the first bracket member 610, and the second annular segment 412b extends from the first annular segment 412a in an axial direction to a surface of the support portion 613 of the first bracket member 610 that faces away from the second radial side 214 of the yoke 210. Figure 2E and Figure 2F As best shown, the retaining flange 614 of the first bracket member 610 protrudes from the first axial side 211 of the yoke 210 in the axial direction and engages the first axial side 211 to retain the stator core 200. The first annular portion 411 of the insulator 410 is disposed on the first axial side 211 of the yoke 210, the first annular section 412a of the second annular portion 412 extends from the first annular portion 411 in a radially inward direction to cover the retaining flange 614 of the first bracket member 610, and the second annular section 412b extends axially from the first annular section 412a to a surface 613b of the support portion 613 of the first bracket member 610 facing away from the second radial side 214 of the yoke 210. An annular receiving groove 412d ( Figure 2F ) to accommodate the retaining flange 614 of the first bracket member 610. In this way, the stator winding 300 and / or the power supply cable 7 can be electrically insulated relative to the retaining flange 614 of the metal bracket 600, thereby improving the reliability of the stator 100.

[0085] In some embodiments, Figure 2E and Figure 2F As shown, the fourth conductive strip 424 can be arranged in the first annular portion 411 of the insulating member 410, while the first conductive strip 421, the second conductive strip 422 and the third conductive strip 423 can be arranged in the second annular section 412b of the second annular portion 412 of the insulating member 410. It is beneficial to optimize the axial dimension of the insulating member 410 by arranging as many conductive strips as possible in the second annular section 412b. In addition, it should be noted that since each conductive strip is arranged in the insulating member 410, FIG. 2A to FIG. 2C and FIG. 3A to FIG. 3B The main body of each conductive strip is not shown. It should be understood that the present application is not limited thereto. For example, in other embodiments, all conductive strips may also be disposed in the second annular section 412 b of the second annular portion 412 of the insulating member 410 .

[0086] In some embodiments, the winding joints of the conductive strips can be exposed from the insulating member 410 in a specific pattern to provide a design that facilitates wiring and improves wiring accuracy. Figure 2C As best shown, the winding joints 421a of the first conductive strip 421, the winding joints 422a of the second conductive strip 422, the winding joints 423a of the third conductive strip 423, and the winding joints 424a of the fourth conductive strip 424 can be exposed on the axially outer side 410a of the insulating member 410 in such a pattern that the winding joints 421a of the first conductive strip 421 can all be located at a first radius R1 (see Figure 2C The winding joints 422a of the second conductive strip 422 may all be located on an imaginary circular ring with a second radius R2, the winding joints 423a of the third conductive strip 423 may all be located on an imaginary circular ring with a third radius R3, and the winding joints 424a of the fourth conductive strip 424 may all be located on an imaginary circular ring with a fourth radius R4, and R1<R2<R3<R4. That is, the winding joints 421a of the first conductive strip 421, the winding joints 422a of the second conductive strip 422, the winding joints 423a of the third conductive strip 423, and the winding joints 424a of the fourth conductive strip 424 may be located on imaginary circular rings with different diameters on the axial outer side 410a of the insulating member 410, respectively. In other words, the winding joint 421a of the first conductive bar 421, the winding joint 422a of the second conductive bar 422, the winding joint 423a of the third conductive bar 423, and the winding joint 424a of the fourth conductive bar 424 can be respectively located at different distances from the central axis of the stator core 200 on the axial outer side 410a of the insulating member 410. In this way, the winding joints can be easily distinguished from each other visually, thereby facilitating wiring and improving the accuracy of wiring.

[0087] In some embodiments, the input terminal 300U1 and the output terminal 300U2 of the U-phase winding 300U, the input terminal 300V1 and the output terminal 300V2 of the V-phase winding 300V, and the input terminal 300W1 and the output terminal 300W2 of the W-phase winding 300W can be configured to have different lengths to provide a convenient wiring design. Specifically, Figure 2CAs best shown, the input terminals 300U1 of the U-phase winding 300U can have the same length, the input terminals 300V1 of the V-phase winding 300V can have the same length, and the input terminals 300W1 of the W-phase winding 300W can have the same length, and the lengths of the input terminals 300U1, 300V1, and 300W1 are different from each other. In addition, the output terminals 300U2 of the U-phase winding 300U, the output terminals 300V2 of the V-phase winding 300V, and the output terminals 300W2 of the W-phase winding 300W can have the same length, and the length is different from the lengths of the input terminals 300U1, 300V1, and 300W1. In this way, it is easy to visually distinguish these terminals from each other, thereby facilitating wiring and improving the accuracy of wiring.

[0088] In some embodiments, the component 400 may be fixed to the metal bracket 600 to prevent the component 400 from shifting relative to the stator core 200 and causing electrical disconnection and / or insulation failure. For example, the insulator 410 may include a first fixing feature provided on the second annular section 412b of the second annular portion 412, and the metal bracket 600 may include a second fixing feature. The first fixing feature cooperates with the second fixing feature so that the insulator 410 is fixed to the metal bracket 600. Figure 2B As shown, the first bracket member 610 and the second bracket member 620 of the metal bracket 600 may include fixing holes 615 and fixing holes 625, respectively (three each in this embodiment). When the first bracket member 610 and the second bracket member 620 are fixed together, the fixing holes 615 may be aligned with the corresponding fixing holes 625. Figure 2B , Figure 3C and FIG. 4A to FIG. 4B As shown, the insulating member 410 may include fixing blocks 414 (three in this embodiment) and fixing protrusions 415 disposed on the fixing blocks 414. The fixing blocks 414 may extend axially from the second annular section 412b, so that when the second annular section 412b is disposed on a surface 613b of the second radial side 214 of the support portion 613 of the first bracket member 610 facing away from the yoke 210, the fixing protrusions 415 may be received by the corresponding fixing holes 615 and the fixing holes 625, so as to fix the member 400 to the metal bracket 600. Figure 4BAs shown, the fixing protrusion 415 may include a thinner neck 415a extending from the fixing block 414 and a wider head 415b located at the end of the neck 415a. The neck 415a is configured to be received in the corresponding fixing hole 615 and the fixing hole 625, and the head 415b may extend through the corresponding fixing hole 615 and the fixing hole 625 to engage with the disc-shaped body 621 of the second bracket member 620 on the side of the second bracket member 620 facing away from the component 400, thereby fixing the component 400 to the metal bracket 600. In this way, it is possible to prevent the component 400 from being displaced relative to the stator core 200 to cause electrical connection disconnection and insulation failure, thereby improving the reliability of the stator 100.

[0089] It should be understood that the component 400 can be fixed to the metal bracket 600 by any other suitable fixing feature, such as by a separate bracket. It should also be understood that the component 400 can be fixed relative to the stator core 200 by any suitable means, not limited to being fixed to the metal bracket 600.

[0090] In some embodiments, Figure 3A , Figure 3B and Figure 4B As best shown, the fixing block 414 of the insulating member 410 may extend in a radially inward direction beyond the radial inner side surface 412c of the second annular portion 412, and the cable connector of the conductive strip may be disposed on an axial surface 414a of the fixing block 414 facing away from the metal bracket 600. Figure 3B As best shown, the cable connector 423b of the third conductive strip 423 can be disposed on the axial surface 414a of the fixing block 414. The fixing block 414 can electrically insulate the cable connector 423b from the metal bracket 600. In one of these embodiments, as shown in FIG. Figure 4A As best shown, the fixing block 414 may include a bolt receiving hole 414b recessed from the axial surface 414a into the fixing block 414. The bolt receiving hole 414b of the fixing block 414 may be aligned with the bolt receiving hole 4231b of the cable connector 423b so that a bolt for fixing can extend from the bolt receiving hole 4231b of the cable connector 423b to the bolt receiving hole 414b of the fixing block 414. This configuration can further improve the connection strength of the W-phase power supply line to the cable connector 423b, thereby improving the reliability of the stator 100. Although the figure shows that the cable connector 423b of the third conductive bar 423 is disposed on the axial surface 414a of the fixing block 414, it should be understood that in other embodiments, any one or more of the cable connector 421b of the first conductive bar 421, the cable connector 422b of the second conductive bar 422, and the cable connector 423b of the third conductive bar 423 may be disposed on the axial surface 414a of the corresponding fixing block 414.

[0091] In some embodiments, Figure 3A , Figure 3B and Figure 4A As best shown, the insulator 410 may include mounting blocks 416 (two in this embodiment). The structure of the mounting blocks 416 may be similar to the structure of the fixing blocks 414, except that the mounting blocks 416 do not have the fixing protrusions 415. Figure 3B As best shown, the cable connector 421b of the first conductive bar 421 and the cable connector 422b of the second conductive bar 422 can extend respectively on the axial surface 416a of the mounting block 416. The mounting block 416 can electrically insulate the cable connector 421b and the cable connector 422b relative to the metal bracket 600. In one of these embodiments, the mounting block 416 can include a bolt receiving hole 416b recessed from the axial surface 416a into the mounting block 416. The bolt receiving hole 416b of the mounting block 416 can be aligned with the bolt receiving holes (not shown) of the cable connector 421b and the cable connector 422b so that the bolts for fixing can extend from the bolt receiving holes of the cable connector 421b and the cable connector 422b to the corresponding bolt receiving holes 416b of the mounting block 416. This configuration can further improve the connection strength of the U-phase power supply line and the V-phase power supply line to the cable connector 421b and the cable connector 422b, thereby improving the reliability of the stator 100. Although the figure shows that the cable connector 421b of the first conductive strip 421 and the cable connector 422b of the second conductive strip 422 are respectively arranged on the axial surface 416a of the mounting block 416, it should be understood that in other embodiments, any one or more of the cable connector 421b of the first conductive strip 421, the cable connector 422b of the second conductive strip 422 and the cable connector 423b of the third conductive strip 423 may be arranged on the axial surface 416a of the mounting block 416.

[0092] Although it is described above that the insulating member 410 of the component 400 is disposed on the first axial side 211 of the yoke 210 of the stator core 200, it should be understood that the insulating member 410 of the component 400 may also be disposed on the second axial side 212 of the yoke 210. In addition, although it is described above that the component 400 includes a single insulating member 410 and a conductive strip disposed in the single insulating member 410, it should be understood that the component 400 may also include two insulating members, namely, a first insulating member and a second insulating member. The structure of the first insulating member may be the same as that of the insulating member 410, and the second insulating member may be a mirror image of the first insulating member. The first insulating member may be disposed on the first axial side 211 of the yoke 210 of the stator core 200, and the second insulating member may be disposed on the second axial side 212 of the yoke 210. Some of the conductive strips may be disposed in the first insulating member, and other of the conductive strips may be disposed in the second insulating member. In this case, the insulating plate 500 may be omitted.

[0093] As described above, the stator 100 can be used to Figure 1A In the wheel hub motor 1 shown, instead of Figure 1A and Figure 1B The stator 5 shown in FIG. Figure 1A and Figure 1B The structure of the stator 5 is specifically described, and the structure of the stator 100 according to the present application is compared with the structure of the stator 5 .

[0094] like Figure 1A and Figure 1BAs shown, the stator 5 includes a stator core 51 having a yoke 51a and a plurality of teeth 51b, a plurality of stator windings 52, a first insulating plate 81 and a second insulating plate 82, a metal bracket, an insulating cover 83, and a shaft tube 10. The first insulating plate 81 and the second insulating plate 82 are respectively arranged on the two axial sides of the stator core 51, and the stator winding 52 is wound on the teeth 51b. The structures of the first insulating plate 81 and the second insulating plate 82 can be similar to the structures of the aforementioned insulating plate 500, respectively, so they are not repeated here. The first insulating plate 81 and the second insulating plate 82 can electrically insulate the stator winding 52 relative to the stator core 51. The metal bracket is composed of a first bracket member 91 and a second bracket member 92. The first bracket member 91 and the second bracket member 92 can be fixed together to support and hold the stator core 51, the first insulating plate 81 and the second insulating plate 82. The first bracket member 91 and the second bracket member 92 may support the stator core 51 on the radial inner side of the yoke 51a of the stator core 51, and the retaining flange 91b of the first bracket member 91 and the retaining flange 92b of the second bracket member 92 may respectively engage the first insulating plate 81 and the second insulating plate 82 in the axial direction to retain the stator core 51, the first insulating plate 81 and the second insulating plate 82 therebetween. The retaining flange 91b of the first bracket member 91 protrudes from the first insulating plate 81 in the axial direction, and the retaining flange 92b of the second bracket member 92 protrudes from the second insulating plate 82 in the axial direction. The insulating cover 83 may be snapped on and cover the retaining flange 91b of the first bracket member 91 to electrically insulate the stator winding 52 and the power supply cable 7 connected to the stator winding 52 from the retaining flange 91b of the first bracket member 91. The center hole 91a of the first bracket member 91 can be aligned with the center hole 92a of the second bracket member 92, and the shaft tube 10 can extend through the center hole 91a and the center hole 92a, and be fixed in the center hole 91a and the center hole 92a. The shaft 3 can extend through the shaft tube 10, and the stator 5 can be fixed on the shaft 3 through the shaft tube 10 (for example, by a key connection). The housing 4 of the rotor 1a can be mounted on the shaft 3 in a manner that can rotate relative to the stator 5 around the rotation axis 2 through the bearing 11. The rotor magnet 6 can be arranged on the inner wall of the housing 4 around the stator 5. The power supply cable 7 can extend from the outside of the housing 4 through the channel 31 in the shaft 3 to the housing 4 to be connected to the stator winding 52. When the stator winding 52 is energized via the power supply cable 7, the rotor magnet 6 can drive the housing 4 to rotate around the rotation axis 2 on the shaft 3 through the interaction of its magnetic field with the magnetic field of the stator winding 52. It should be understood that the magnetic field of the rotor 1 a for interaction with the magnetic field of the stator winding 52 may also be generated by other suitable devices, and is not limited to the rotor magnet 6 .

[0095] and Figure 1A and Figure 1BCompared with the stator 5 shown in FIG. 1 , in the stator 100 according to the present application, a component 400 is used to connect the stator winding 300. The component 400 can function as an electrical connector. The connection terminals of the stator winding 300 can be connected to each other and / or to the power supply cable 7 through the conductive strips of the component 400. This can simplify the connection process of multiple stator windings 300 during the manufacture of the motor 1 and improve the connection quality, and can reduce or even avoid wire waste, thereby improving the production efficiency of the stator 100 and reducing costs.

[0096] In addition, Figure 1A and Figure 1B Compared with the stator 5 shown in FIG. 1 , in the stator 100 according to the present application, a component 400 is used to electrically insulate the stator winding 300 and the power supply cable 7 relative to the stator core 200 and the metal bracket 600. This can reduce the number of components, thereby simplifying the assembly process. In addition, in the stator 100 according to the present application, since the component 400 is reliably fixed to the metal bracket 600 through the fixing feature, it is possible to prevent the component 400 from being displaced relative to the stator core 200 to cause electrical disconnection and / or insulation failure, thereby improving the reliability of the stator 100, especially in a vibration environment.

[0097] Although the above description is used in conjunction with the stator 100 Figure 1A The wheel hub motor 1 shown describes a specific configuration of the stator 100, but it should be understood that the stator 100 can also be used for any other suitable motor, such as an AC generator, an AC generator-starter, a traction motor, a DC motor, a hybrid drive motor, etc. Therefore, the present application also proposes a motor including the aforementioned stator 100. In the motor, the connection terminals of the stator winding 300 can be connected through the conductive strips of the component 400, and the power supply cable is connected to the cable connector of the conductive strip to establish an electrical connection with the plurality of stator windings 300 through the conductive strips.

[0098] Although the present application is described above in conjunction with an embodiment in which the multiple stator windings 300 are configured as three-phase windings, it should be understood that the present application is not limited thereto. In other embodiments, the multiple stator windings 300 can be configured as five-phase windings, six-phase windings, etc., and the terminals of the multiple stator windings 300 can be connected to each other and / or to the power supply cable 7 through the conductive strips of the component 400 to provide the above-mentioned benefits.

[0099] Although the above text combines multiple stator windings 300 to be wound on the teeth 220 of the stator core 200 in a winding manner, it should be understood that the present application is not limited to this. In other partial embodiments, the stator winding 300 can be a prefabricated winding component. "Prefabricated winding component" refers to a prefabricated component carrying a winding that has been assembled before being installed on the teeth of the stator core. The prefabricated winding component can be directly sleeved on the teeth 220. Therefore, in the present application, the stator winding 300 can be arranged on the teeth 220.

[0100] The present application also proposes a method for manufacturing the stator 100. Specifically, Figure 8 As schematically shown, the method includes: in step S1, providing a stator core 200, an insulating member 410, a conductive bar (or a component 400 including an insulating member 410 and a conductive bar) and a plurality of stator windings 300, wherein the stator core 200 includes an annular yoke 210, and a plurality of teeth 220 extending radially from the yoke 210 and spaced apart from each other in the circumferential direction, each stator winding 300 includes a terminal, the conductive bar is disposed in the insulating member 410, and includes a winding joint exposed from the insulating member 410; in step S2, disposing the insulating member 410 on the yoke 210 of the stator core 200 or adjacent to the yoke 210; in step S3, disposing a plurality of stator windings 300 on a plurality of teeth 220; and in step S4, connecting the terminals of the plurality of stator windings 300 to the winding joints of the conductive bar. As described above, this method can connect the connection terminals of the plurality of stator windings 300 to each other and / or to the power supply cable 7 through the conductive bars of the component 400. This can simplify the connection process of the plurality of stator windings 300 during the manufacture of the motor 1 and improve the connection quality, and can reduce or even avoid wire waste, thereby improving the production efficiency of the stator 100 and reducing costs.

[0101] In some embodiments, the plurality of stator windings 300 may be configured in a star connection in the aforementioned manner through the first conductive strip 421 , the second conductive strip 422 , the third conductive strip 423 , and the fourth conductive strip 424 of the component 400 .

[0102] In some embodiments, the plurality of stator windings 300 may be configured in a delta connection in the aforementioned manner through the first conductive strip 421 ′, the second conductive strip 422 ′, and the third conductive strip 423 ′ of the component 400 .

[0103] In some embodiments, disposing the insulator 410 on the yoke 210 of the stator core 200 may include disposing the first annular portion 411 on an axial side (e.g., the first axial side 211) of the yoke 210, and disposing each of the plurality of fingers 413 on an axial end (e.g., the first axial end 221) of a corresponding one of the plurality of teeth 220 of the stator core 200 to separate the tooth 220 from the corresponding stator winding 300 at the axial end.

[0104] In some embodiments, the method may also include supporting the yoke 210 on the second radial side 214 of the yoke 210 of the stator core 200 by a support portion of the metal bracket 600, and retaining the stator core 200 on the axial side (e.g., the first axial side 211) of the yoke 210 by a retaining flange (e.g., the retaining flange 614) of the metal bracket 600, and arranging the insulating member 410 on the yoke 210 may also include arranging the first annular segment 412a of the second annular portion 412 of the insulating member 410 on the retaining flange, and arranging the second annular segment 412b of the second annular portion 412 on a surface (e.g., surface 613b) of the support portion facing away from the second radial side 214.

[0105] Although the configuration of the stator 100 is described above in conjunction with an embodiment in which the stator 100 is configured as an inner stator configuration (i.e., the rotor magnet 6 of the rotor 1a is on the radially outer side of the stator 100), it should be understood that the present application is not limited thereto. In other partial embodiments, the stator 100 may also be configured as an outer stator configuration (i.e., the rotor magnet 6 of the rotor 1a is on the radially inner side of the stator 100). In this case, the plurality of teeth 220 of the stator core 200 are arranged from the yoke 210 in a radially inward direction, and other structures and parts of the stator 100 may be changed accordingly to adapt to the outer stator configuration.

[0106] It should also be understood that the terms “first,” “second,” “third,” and “fourth” are only used to distinguish one element, component or section from another element, component or section, but these elements, components and sections should not be limited by such terms.

[0107] The present application has been described in detail above in conjunction with specific embodiments. Obviously, the above description and the embodiments shown in the accompanying drawings should be understood as exemplary and do not constitute a limitation to the present application. For those skilled in the art, various modifications or changes can be made to the present application without departing from the spirit of the present application, and these modifications or changes do not depart from the scope of the present application.

Claims

1. A stator (100) for an electric motor, characterized in that: The stator comprises: A stator core (200), comprising an annular yoke portion (210) and a plurality of tooth portions (220) extending from the yoke portion in a radial direction and spaced apart from each other in a circumferential direction; A plurality of stator windings (300) are arranged on the plurality of teeth, each of the stator windings comprising a terminal; an insulating member (410) disposed on the yoke or disposed adjacent to the yoke; and a conductive bar disposed in the insulating member and comprising a winding connection exposed from the insulating member; Wherein, the connection ends of the plurality of stator windings are connected to the winding joints of the conductive bars.

2. The stator according to claim 1, characterized in that: The plurality of stator windings are configured as three-phase windings and include a U-phase winding (300U), a V-phase winding (300V), and a W-phase winding (300W), and a terminal of each of the U-phase winding, the V-phase winding, and the W-phase winding includes an input terminal and an output terminal; The conductive strips include a first conductive strip (421), a second conductive strip (422), a third conductive strip (423) and a fourth conductive strip (424), the first conductive strip, the second conductive strip, the third conductive strip and the fourth conductive strip being electrically insulated from each other by the insulating member, and each of the first conductive strip, the second conductive strip and the third conductive strip further includes a cable connector exposed from the insulating member, the cable connector being configured to be used for connecting a power supply cable (7); and The input terminal (300U1) of the U-phase winding is connected to the winding connector (421a) of the first conductive strip, the input terminal (300V1) of the V-phase winding is connected to the winding connector (422a) of the second conductive strip, the input terminal (300W1) of the W-phase winding is connected to the winding connector (423a) of the third conductive strip, and the output terminal (300U2) of the U-phase winding, the output terminal (300V2) of the V-phase winding and the output terminal (300W2) of the W-phase winding are connected to the winding connector (424a) of the fourth conductive strip, so that the multiple stator windings are configured in a star connection.

3. The stator according to claim 2, characterized in that: Each of the U-phase winding, the V-phase winding and the W-phase winding includes N parallel branches, wherein N is an integer greater than 1, and each branch includes an input terminal and an output terminal; The number of the first conductive strip is one, the number of the second conductive strip is one, the number of the third conductive strip is one, and the number of the fourth conductive strip is N; and The input terminals of the N branches of the U-phase winding are connected to the first conductive strip, the input terminals of the N branches of the V-phase winding are connected to the second conductive strip, the input terminals of the N branches of the W-phase winding are connected to the third conductive strip, and the output terminals of each branch of the U-phase winding and the output terminals of a corresponding branch of the V-phase winding and the output terminals of a corresponding branch of the W-phase winding are connected to a corresponding one of the N fourth conductive strips.

4. The stator according to claim 1, characterized in that: The plurality of stator windings are configured as three-phase windings and include a U-phase winding (300U), a V-phase winding (300V), and a W-phase winding (300W), and a terminal of each of the U-phase winding, the V-phase winding, and the W-phase winding includes an input terminal and an output terminal; The conductive strips include a first conductive strip (421'), a second conductive strip (422') and a third conductive strip (423'), the first conductive strip, the second conductive strip and the third conductive strip being electrically insulated from each other by the insulating member, and each of the first conductive strip, the second conductive strip and the third conductive strip further includes a cable connector exposed from the insulating member, the cable connector being configured to be used for connecting a power supply cable (7); and The input terminal (300U1) of the U-phase winding and the output terminal (300W2) of the W-phase winding are connected to the winding connection of the first conductive strip, the input terminal (300V1) of the V-phase winding and the output terminal (300U2) of the U-phase winding are connected to the winding connection of the second conductive strip, and the input terminal (300W1) of the W-phase winding and the output terminal (300V2) of the V-phase winding are connected to the winding connection of the third conductive strip, so that the multiple stator windings are configured in a triangle connection.

5. The stator according to claim 4, characterized in that: Each of the U-phase winding, the V-phase winding and the W-phase winding includes N parallel branches, wherein N is an integer greater than 1, and each branch includes an input terminal and an output terminal; The number of the first conductive strip is one, the number of the second conductive strip is one, and the number of the third conductive strip is one; and The input terminals of the N branches of the U-phase winding and the output terminals of the N branches of the W-phase winding are connected to the first conductive bar, the input terminals of the N branches of the V-phase winding and the output terminals of the N branches of the U-phase winding are connected to the second conductive bar, and the input terminals of the N branches of the W-phase winding and the output terminals of the N branches of the V-phase winding are connected to the third conductive bar.

6. The stator according to any one of claims 2 to 5, characterized in that: The winding joint comprises a first claw portion (4211a) and a second claw portion (4212a), wherein the first claw portion and the second claw portion define a groove (4213a) therebetween, and the terminal is welded to the winding joint in the groove; and / or The cable connector comprises a bolt receiving portion so that the power supply cable can be fixed to the cable connector by bolts; and / or The winding joints of different ones of the conductive strips are respectively located on imaginary circular rings with different diameters on the axial outer side (410a) of the insulating member; and / or The conductive strips are in the form of arc strips; and / or The remaining portion of the conductive bar except the winding connection and the cable connection is embedded in the insulating member.

7. The stator according to any one of claims 1 to 5, characterized in that: The insulating member includes a first annular portion (411) arranged on the axial side of the yoke portion, and a plurality of fingers (413) extending from the first annular portion along the radial direction and spaced apart from each other in the circumferential direction, each of the plurality of fingers being arranged on the axial end of a corresponding one of the plurality of tooth portions of the stator core to space the tooth portion from the corresponding stator winding at the axial end.

8. The stator according to claim 7, characterized in that: The yoke portion includes a first radial side (213) and a second radial side (214) opposite to each other in the radial direction, and the plurality of teeth portions extend from the first radial side along the radial direction; The stator further comprises a metal bracket (600), the metal bracket comprising an annular support portion and a retaining flange (614) extending from an axial end of the support portion along the radial direction, the support portion supporting the yoke portion on the second radial side of the yoke portion, and the retaining flange retaining the stator core on the axial side of the yoke portion; and The insulating member also includes a second annular portion (412) having a first annular segment (412a) and a second annular segment (412b), the first annular segment extending from the first annular portion along the radial direction to cover the retaining flange, and the second annular segment extending from the first annular segment along the axial direction to a surface (613b) of the support portion that is away from the second radial side.

9. The stator according to claim 8, characterized in that: The insulating member further comprises a first fixing feature disposed on the second annular segment, and the metal bracket comprises a second fixing feature, the first fixing feature cooperating with the second fixing feature so that the insulating member is fixed to the metal bracket; and / or The first radial side is a radially outer side of the yoke, and the second radial side is a radially inner side of the yoke; and / or At least some of the conductive strips are disposed in the second annular section.

10. The stator according to any one of claims 1 to 5, characterized in that: The yoke comprises a first axial side (211) and a second axial side (212) which are opposite to each other in the axial direction, and the insulating member is arranged on the yoke on the first axial side or the second axial side; or The yoke includes a first axial side (211) and a second axial side (212) opposite to each other in the axial direction, the insulating member includes a first insulating member arranged on the yoke on the first axial side and a second insulating member arranged on the yoke on the second axial side, some of the conductive strips are arranged in the first insulating member, and other of the conductive strips are arranged in the second insulating member.

11. A motor, characterized in that: The motor comprises: The stator according to any one of claims 1 to 10, wherein at least some of the conductive bars of the stator further include cable connectors exposed from the insulating member and configured to be connected to power supply cables; and A power supply cable is connected to the cable connector.

12. The motor according to claim 11, characterized in that The motor is a wheel hub motor and comprises: a rotor comprising a housing; and a shaft extending axially through the housing and the stator; The stator is disposed in the housing and fixed on the shaft, and the housing is rotatably mounted on the shaft.

13. A method for manufacturing a stator (100) for an electric motor, characterized in that: The method comprises: A stator core (200), an insulating member (410), a conductive bar, and a plurality of stator windings (300) are provided, wherein the stator core comprises an annular yoke (210) and a plurality of tooth portions (220) extending radially from the yoke and spaced apart from each other in the circumferential direction, each of the stator windings comprises a terminal, the conductive bar is disposed in the insulating member, and comprises a winding joint exposed from the insulating member; Disposing the insulating member on or adjacent to the yoke; disposing the plurality of stator windings on the plurality of teeth; and The terminal ends of the plurality of stator windings are connected to the winding connections of the conductive bars.

14. The method according to claim 13, characterized in that: The plurality of stator windings are configured as three-phase windings and include a U-phase winding (300U), a V-phase winding (300V), and a W-phase winding (300W), and a terminal of each of the U-phase winding, the V-phase winding, and the W-phase winding includes an input terminal and an output terminal; The conductive strips include a first conductive strip (421), a second conductive strip (422), a third conductive strip (423) and a fourth conductive strip (424), the first conductive strip, the second conductive strip, the third conductive strip and the fourth conductive strip being electrically insulated from each other by the insulating member, and each of the first conductive strip, the second conductive strip and the third conductive strip further includes a cable connector exposed from the insulating member, the cable connector being configured to be used for connecting a power supply cable (7); and Connecting the terminals of the multiple stator windings to the winding joints of the conductive strips includes connecting the input terminal (300U1) of the U-phase winding to the winding joint (421a) of the first conductive strip, connecting the input terminal (300V1) of the V-phase winding to the winding joint (422a) of the second conductive strip, connecting the input terminal (300W1) of the W-phase winding to the winding joint (423a) of the third conductive strip, and connecting the output terminal (300U2) of the U-phase winding, the output terminal (300V2) of the V-phase winding, and the output terminal (300W2) of the W-phase winding to the winding joint (424a) of the fourth conductive strip, so that the multiple stator windings are configured into a star connection.

15. The method according to claim 13, characterized in that: The plurality of stator windings are configured as three-phase windings and include a U-phase winding (300U), a V-phase winding (300V), and a W-phase winding (300W), and a terminal of each of the U-phase winding, the V-phase winding, and the W-phase winding includes an input terminal and an output terminal; The conductive strips include a first conductive strip (421'), a second conductive strip (422') and a third conductive strip (423'), the first conductive strip, the second conductive strip and the third conductive strip being electrically insulated from each other by the insulating member, and each of the first conductive strip, the second conductive strip and the third conductive strip further includes a cable connector exposed from the insulating member, the cable connector being configured to be used for connecting a power supply cable; as well as Connecting the terminals of the multiple stator windings to the winding joints of the conductive strips includes connecting the input terminal (300U1) of the U-phase winding and the output terminal (300W2) of the W-phase winding to the winding joints of the first conductive strip, connecting the input terminal (300V1) of the V-phase winding and the output terminal (300U2) of the U-phase winding to the winding joints of the second conductive strip, and connecting the input terminal (300W1) of the W-phase winding and the output terminal (300V2) of the V-phase winding to the winding joints of the third conductive strip, so that the multiple stator windings are configured into a triangle connection.

16. The method according to any one of claims 13 to 15, characterized in that: The insulating member includes a first annular portion (411) and a plurality of fingers (413) extending from the first annular portion along the radial direction and spaced apart from each other in the circumferential direction; and Disposing the insulating member on the yoke includes disposing the first annular portion on an axial side of the yoke, and disposing each of the plurality of fingers on an axial end of a corresponding one of the plurality of teeth of the stator core to separate the tooth from the corresponding stator winding at the axial end.

17. The method according to claim 16, characterized in that: The yoke portion includes a first radial side (213) and a second radial side (214) opposite to each other in the radial direction, and the plurality of teeth portions extend from the first radial side along the radial direction; The stator further comprises a metal bracket (600), wherein the metal bracket comprises an annular support portion and a retaining flange (614) extending from an axial end of the support portion along the radial direction; The insulating member further comprises a second annular portion (412) having a first annular section (412a) and a second annular section (412b), the first annular section extending from the first annular section along the radial direction and configured to cover the retaining flange, the second annular section extending from the first annular section along the axial direction and configured to extend to a surface (613b) of the support portion away from the second radial side; The method further includes supporting the yoke on the second radial side of the yoke by the support portion, and retaining the stator core on the axial side of the yoke by the retaining flange; as well as Disposing the insulator on the yoke also includes disposing the first annular segment on the retaining flange and disposing the second annular segment on the surface of the support portion facing away from the second radial side.

Images