TW202322516A - Stator with multi-layer rectangular winding and electric machine with multi-layer rectangular winding - Google Patents

Abstract

A stator with multi-layer rectangular winding includes a stator core and at least one winding. The stator core includes a plurality of stator teeth and a plurality of stator slots, wherein the stator teeth and the stator slots are staggered with respect to each other. Each winding is formed by winding a plurality of rectangular wires and each winding includes a plurality of winding structures. Each winding structure is sleeved on the stator tooth and accommodated in the stator slot. Each winding structure includes a plurality of winding layers, wherein the winding layers are stacked with each other along a radial direction of the stator core. A width of each winding layer increases along the radial direction of the stator core from inside to outside, wherein a width direction of each winding layer is perpendicular to the radial direction of the stator core.

Description

Stator with multilayer boxer winding and motor with multilayer boxer winding

The present invention relates to a stator, in particular to a stator with multi-layer flat-angle windings and a motor equipped with the stator.

Stator and rotor are important components in generators and electric motors. The generator system uses the change of the magnetic field when the rotor rotates relative to the stator to make the winding of the stator generate current, and the motor uses the current input to the winding of the stator to generate a magnetic field to drive the rotor to rotate. At present, the winding of the stator is mainly made of round wire. Although round wires are easier to manufacture on winding wires, there will be gaps between the round wires when arranging the wires. The gaps will become larger due to the increase in the diameter of the round wires, and these gaps will reduce the overall slot occupancy rate of the winding. On the other hand, under some high-performance requirements, round wires with thicker wire diameters are usually used to carry current. However, round wires with thicker wire diameters will further reduce the overall slot ratio of the winding.

The present invention provides a stator with multilayer boxer windings and a motor equipped with the stator to solve the above problems.

According to one embodiment, the stator with multilayer boxer windings of the present invention includes a stator core and at least one winding. The stator core includes a plurality of stator teeth and a plurality of stator slots, wherein the plurality of stator teeth and the plurality of stator slots are alternately arranged. Each winding is wound by a plurality of rectangular wires, and each winding includes a plurality of winding structures. Each winding structure is sleeved on the stator teeth and accommodated in the stator slot. Each winding structure includes a plurality of winding layers, wherein the plurality of winding layers are stacked on each other along the radial direction of the stator core. The width of each winding layer increases from inside to outside along the radial direction of the stator core, wherein the width direction of each winding layer is perpendicular to the radial direction of the stator core.

According to another embodiment, the inventive motor with multilayer boxer windings comprises a stator and a rotor. The stator includes a stator core and at least one winding. The stator core includes a plurality of stator teeth and a plurality of stator slots, wherein the plurality of stator teeth and the plurality of stator slots are alternately arranged. Each winding is wound by a plurality of rectangular wires, and each winding includes a plurality of winding structures. Each winding structure is sleeved on the stator teeth and accommodated in the stator slot. Each winding structure includes a plurality of winding layers, wherein the plurality of winding layers are stacked on each other along the radial direction of the stator core. The width of each winding layer increases from inside to outside along the radial direction of the stator core, wherein the width direction of each winding layer is perpendicular to the radial direction of the stator core. The rotor is set in the stator core.

To sum up, the winding of the present invention is made of rectangular wires, and each winding structure of the winding is formed by stacking multiple winding layers along the radial direction of the stator core. The width of each winding layer can be increased from the inside to the outside along the radial direction of the stator core according to the slot shape of the stator slot, so as to reduce the gap between two adjacent winding structures in the stator slot, thereby increasing the overall slot occupation rate of the winding . In the present invention, the forming winding can be wound on the jig with a flat-angle wire first, and then the winding structure of the winding is sleeved on the stator teeth. In this way, not only the winding is better formed, but also the stator core is less affected by the tension of the winding, so that the motor is less likely to generate additional vibration noise during operation.

The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

Please refer to Figures 1 to 5, Figure 1 is a perspective view of a motor 1 according to an embodiment of the present invention, Figure 2 is a perspective view of the stator 10 in Figure 1, Figure 3 is the stator in Figure 2 4 is a perspective view of a winding 102 in FIG. 2, and FIG. 5 is a cross-sectional view of the stator 10 in FIG. 2.

As shown in FIG. 1 and FIG. 2 , the motor 1 includes a stator 10 and a rotor 12 , and the stator 10 includes a stator core 100 and at least one winding 102 . In this embodiment, the motor 1 can be a generator or a motor, depending on the actual application. The winding 102 is sleeved on the stator core 100 , and the rotor 12 is disposed in the stator core 100 . It should be noted that the composition and structure of the rotor 12 are well known to those skilled in the art, and will not be repeated here. In this embodiment, the stator 10 may include three windings 102, but not limited thereto. The number of windings can be determined according to practical applications.

As shown in FIG. 3 , the stator core 100 includes a plurality of stator teeth 1000 and a plurality of stator slots 1002 , wherein the plurality of stator teeth 1000 and the plurality of stator slots 1002 are alternately arranged.

As shown in FIG. 4 , each winding 102 is formed by winding a plurality of rectangular wires W1 , W2 , W3 , and each winding 102 includes a plurality of winding structures 1020 . In this embodiment, each winding 102 can be formed by winding three parallel wires W1 , W2 , W3 , and each winding 102 can include four winding structures 1020 , but it is not limited thereto. The quantity of the rectangular wire and the winding structure can be determined according to the actual application. In this embodiment, each winding 102 may further include a plurality of slot-crossing wires 1022 , wherein the plurality of slot-crossing wires 1022 are connected to a plurality of winding structures 1020 . The groove-crossing wire 1022 and the wire winding structure 1020 can be formed by winding the corresponding flat-angle wires W1 , W2 , W3 at one time, so as to avoid the use of the wire-binding ring. Thereby, the manufacturing cost of the motor 1 can be effectively reduced and the volume of the motor 1 can be reduced.

As shown in FIG. 2 and FIG. 5 , each winding structure 1020 is sleeved on the stator teeth 1000 of the stator core 100 and accommodated in the stator slot 1002 . In this embodiment, the stator 10 may further include a plurality of insulating frames 104, as shown in FIG. 3 . In the present invention, a plurality of insulating frames 104 can be respectively sleeved on a plurality of stator teeth 1000 of the stator core 100, and then each winding structure 1020 is respectively sleeved on the insulating frame 104, so that each winding structure 1020 is respectively sleeved on the plurality of stator teeth 1000 of the stator core 100 It is arranged on the stator teeth 1000 of the stator core 100 and accommodated in the stator slot 1002 .

As shown in FIG. 4 and FIG. 5 , each winding structure 1020 includes a plurality of winding layers 1024 , 1026 , and the plurality of winding layers 1024 , 1026 are stacked on each other along the radial direction D1 of the stator core 100 . In this embodiment, each winding structure 1020 may include two winding layers 1024 , 1026 , but it is not limited thereto. The number of winding layers can be determined according to practical applications. In addition, at least one of the plurality of winding layers 1024, 1026 may include a plurality of sub-winding layers. In this embodiment, the winding layer 1026 may include two sub-winding layers 1028 , but it is not limited thereto. The number of sub-winding layers can be determined according to practical applications. As shown in FIG. 5 , when the winding layer 1026 is sleeved on the stator tooth 1000 , a plurality of sub-winding layers 1028 are stacked on the stator tooth 1000 .

As shown in Figure 5, the width x1 of the rectangular line W1 may be different from the width x2, x3 of the rectangular lines W2, W3, and the width x2, x3 of the rectangular lines W2, W3 may be the same, wherein the width of the rectangular line W1 x1 may be greater than the widths x2, x3 of the rectangular lines W2, W3. According to the slot shape of the stator slot 1002 , in the present invention, the winding layer 1024 can be wound with the rectangular line W1 , and the two sub-winding layers 1028 of the winding layer 1026 can be wound with the rectangular lines W2 and W3 respectively. When the winding layers 1024, 1026 are set on the stator teeth 1000, the width y1, y2 of each winding layer 1024, 1026 increases from the inside to the outside along the radial direction D1 of the stator core 100, that is, the winding layer 1026 The width y2 of the winding layer 1024 is greater than the width y1 of the winding layer 1024 , wherein the width direction D2 of each winding layer 1024 , 1026 is perpendicular to the radial direction D1 of the stator core 100 . Further, according to the slot shape of the stator slot 1002, the present invention can select a flat-angled wire with a suitable width to wind the winding layers 1024, 1026, so as to reduce the gap between the two adjacent winding structures 1020 in the stator slot 1002, Furthermore, the slot occupation ratio of the winding 102 as a whole is improved. If the groove shape of the stator slot 1002 is relatively large, the present invention can divide the winding layer into a plurality of sub-winding layers (for example, the winding layer 1026 is divided into two sub-winding layers 1028), so as to further reduce the number of adjacent winding layers in the stator slot 1002. The space between the two winding structures 1020 further improves the overall slot ratio of the winding 102 . In addition, the sub-winding layer can avoid finding the corresponding flat-angled line due to the oversized stator slot 1002 , and facilitates winding forming. It should be noted that the widths of the plurality of parallel lines used to wind the winding 102 may be completely the same, completely different, or partly the same and partly different. example is limited.

Please refer to Figures 6 and 7. Figure 6 is an exploded view of the stator core 100, winding 102 and insulating frame 104, and Figure 7 is an exploded view of the stator core 100, winding 102 and insulating frame 104 in Figure 6. Portfolio diagram.

As shown in FIG. 6 , in the present invention, a strip-shaped stator core 100 can be prepared first, and three windings 102 are wound first. Next, a plurality of insulating frames 104 are respectively sleeved on the plurality of stator teeth 1000 of the stator core 100, and then each winding structure 1020 of each winding 102 is respectively sleeved on the corresponding insulating frames 104, as shown in FIG. 7 shown. Next, the stator core 100 is wound into a ring shape to form the stator 10 shown in FIG. 2 . In the present invention, the winding 102 can be formed by winding the rectangular wires W1 , W2 , and W3 on the jig first, and then the winding structure 1020 of the winding 102 is set on the insulating frame 104 on the stator tooth 1000 . In this way, not only the winding 102 is formed better, but also the stator core 100 is less affected by the tension of the winding 102 , so that the motor 1 is less likely to generate additional vibration noise during operation.

Please refer to Figures 8 to 10, Figure 8 is a schematic diagram of a plurality of winding layers 1030 connected in series, Figure 9 is a schematic diagram of a plurality of winding layers 1030 connected in parallel, and Figure 10 is a schematic diagram of a plurality of winding layers 1030 Schematic diagram of series and parallel connections.

As shown in FIG. 8, after the winding structure 1020 is sleeved on the stator tooth 1000, a plurality of winding layers 1030 can be connected in series. As shown in FIG. 9, after the winding structure 1020 is sleeved on the stator teeth 1000, a plurality of winding layers 1030 can be connected in parallel. As shown in FIG. 10 , after the winding structure 1020 is sleeved on the stator tooth 1000 , a plurality of winding layers 1030 can be connected in series and parallel. Therefore, the present invention can connect multiple winding layers of the winding structure in series, in parallel or in series and parallel according to the actual application.

Please refer to Figures 11 to 13. Figure 11 is a schematic diagram of a plurality of horizontal lines W1, W2, W3 with exactly the same width, and Figure 12 is a schematic diagram of a plurality of horizontal lines W1, W2, W3 with completely different widths , Figure 13 is a schematic diagram of a plurality of parallel lines W1, W1', W2, W2', W3, W3' with the same width and different parts.

As shown in FIG. 11, the winding structure 1020 can be formed by winding a plurality of horizontal wires W1, W2, W3 with the same width. As shown in FIG. 12 , the winding structure 1020 can be formed by winding a plurality of rectangular wires W1 , W2 , W3 with completely different widths. As shown in Figure 13, the winding structure 1020 can be formed by winding a plurality of rectangular wires W1, W1', W2, W2', W3, W3' with the same width and different parts, wherein the horizontal wires W1, W1' The widths are the same, the widths of the horizontal lines W2 and W2' are the same, and the widths of the horizontal lines W3 and W3' are the same. Therefore, according to the slot shape of the stator, the present invention can select a flat-angle wire with a suitable width to wind the winding structure.

To sum up, the winding of the present invention is made of rectangular wires, and each winding structure of the winding is formed by stacking multiple winding layers along the radial direction of the stator core. The width of each winding layer can be increased from the inside to the outside along the radial direction of the stator core according to the slot shape of the stator slot, so as to reduce the gap between two adjacent winding structures in the stator slot, thereby increasing the overall slot occupation rate of the winding . In the present invention, the forming winding can be wound on the jig with a flat-angle wire first, and then the winding structure of the winding is sleeved on the stator teeth. In this way, not only the winding is better formed, but also the stator core is less affected by the tension of the winding, so that the motor is less likely to generate additional vibration noise during operation. The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

1: motor 10: Stator 12: rotor 100: stator core 102: Winding 104: insulation frame 1000: stator teeth 1002: stator slot 1020: winding structure 1022: Cross slot line 1024, 1026, 1030: winding layer 1028: sub-winding layer D1: Radial D2: Width direction W1, W1', W2, W2', W3, W3': rectangular lines x1, x2, x3, y1, y2: width

Fig. 1 is a perspective view of a motor according to an embodiment of the present invention. Fig. 2 is a perspective view of the stator in Fig. 1 . Fig. 3 is a perspective view of the stator core in Fig. 2 . Figure 4 is a perspective view of a winding in Figure 2 . Fig. 5 is a sectional view of the stator in Fig. 2 . Figure 6 is an exploded view of the stator core, winding and insulating frame. Fig. 7 is a combination diagram of the stator core, winding and insulating frame in Fig. 6. FIG. 8 is a schematic diagram of a plurality of winding layers connected in series. FIG. 9 is a schematic diagram of a plurality of winding layers connected in parallel with each other. Fig. 10 is a schematic diagram of a plurality of winding layers connected in series and parallel to each other. Fig. 11 is a schematic diagram of a plurality of parallel lines having the same width. Figure 12 is a schematic diagram of a plurality of parallel lines with completely different widths. Figure 13 is a schematic diagram of a plurality of rectangular lines with the same width and different parts.

10: Stator

100: stator core

104: insulation frame

1000: stator teeth

1002: stator slot

1020: winding structure

1024,1026: winding layer

1028: sub-winding layer

D1: Radial

D2: Width direction

W1, W2, W3: flat line

x1, x2, x3, y1, y2: width

Claims (10)

A stator with multilayer boxer windings, comprising: a stator core, including a plurality of stator teeth and a plurality of stator slots, the plurality of stator teeth and the plurality of stator slots are alternately arranged; and At least one winding, each of which is wound by a plurality of rectangular wires, each of which includes a plurality of winding structures, each of which is sleeved on the stator teeth and accommodated in the stator slot, each The winding structure includes a plurality of winding layers, the plurality of winding layers are stacked on each other along the radial direction of the stator core, the width of each winding layer increases from the inside to the outside along the radial direction of the stator core, wherein each The width direction of the winding layer is perpendicular to the radial direction of the stator core. The stator with multilayer rectangular windings as claimed in Claim 1, wherein at least one of the plurality of winding layers includes a plurality of sub-winding layers, and the plurality of sub-winding layers are stacked on the stator teeth. The stator with multilayer rectangular windings as described in Claim 1, wherein each winding further includes a plurality of slot-crossing lines, and the plurality of slot-crossing lines connects the plurality of winding structures. The stator with multi-layered rectangular windings as claimed in Claim 1, wherein the widths of the plurality of rectangular wires are different. The stator with multi-layer flat-angle windings as described in claim 1 further includes a plurality of insulating frames, and the plurality of insulating frames are respectively sleeved on the plurality of stator teeth, and each of the winding structures is respectively sleeved on the insulating frames. . A motor with multilayer boxer windings, comprising: A stator includes a stator core and at least one winding, the stator core includes a plurality of stator teeth and a plurality of stator slots, the plurality of stator teeth and the plurality of stator slots are arranged alternately, and each of the windings is composed of a plurality of parallel lines Winding, each of the windings includes a plurality of winding structures, each of the winding structures is respectively sleeved on the stator teeth and accommodated in the stator slot, each of the winding structures includes a plurality of winding layers, the A plurality of winding layers are stacked on each other along the radial direction of the stator core, and the width of each winding layer increases from inside to outside along the radial direction of the stator core, wherein the width direction of each winding layer is perpendicular to the stator iron the radial direction of the core; and A rotor is arranged in the stator core. The motor with multilayer rectangular windings as claimed in claim 6, wherein at least one of the plurality of winding layers includes a plurality of sub-winding layers, and the plurality of sub-winding layers are stacked on the stator teeth. The motor with multi-layered rectangular windings as described in Claim 6, wherein each of the windings further includes a plurality of slot-crossing lines, and the plurality of slot-crossing lines connects the plurality of winding structures. The motor with multi-layered rectangular windings as claimed in claim 6, wherein the plurality of rectangular wires have different widths. The motor with multi-layered square-angle windings as described in claim 6, wherein the stator further includes a plurality of insulating frames, and the plurality of insulating frames are respectively sleeved on the plurality of stator teeth, and each of the winding structures is respectively sleeved on the Insulated rack.

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