CN114362411A - Outer rotor type motor winding tandem device with adjustable connection sequence - Google Patents

Abstract

The invention discloses an outer rotor type motor winding junction device with adjustable connection sequence, which relates to the technical field of motor windings. In the device, a stator coil is wound on a tooth portion of a stator iron core; the stator iron core is sleeved on a stator support The PCB board packaging box is fixedly installed on the stator support, and the winding junction PCB board is fixedly installed in the PCB board packaging box; the winding junction PCB board is provided with pads, and the leads at both ends of the stator coil are welded on the pads, and The winding connection wire is welded on the pad according to the winding arrangement; one end of the winding bus is welded on the pad, and the other end of the winding bus is drawn out and connected to the external power supply line; the PCB board packaging cover and the PCB board packaging box form a packaging cavity , to encapsulate the stator coil leads, the winding junction PCB board, the winding junction wire and the winding bus. The device can avoid the problem of re-offline or re-customization of the busbar, and can flexibly adjust the connection sequence of the windings.

Description

An external rotor type motor winding tandem device with adjustable connection sequence

technical field

The invention relates to the technical field of motor windings, in particular to an outer rotor type motor winding junction device with adjustable connection sequence.

Background technique

Compared with fractional slot stack winding and integer slot distributed winding, fractional slot concentrated winding for motor has the advantages of short winding end, low copper consumption and small winding resistance, and the stator can adopt a segmented structure to improve the slot full rate; Among them, the double-layer fractional-slot concentrated winding has a higher winding factor than the single-layer fractional-slot concentrated winding, so as to improve the power density of the motor. The arrangement of the double-layer fractional-slot concentrated winding is determined by the number of poles and the number of slots of the motor. Under the same number of slots, according to the design needs, although different numbers of poles can be matched, the winding arrangement needs to be changed with the change of the number of poles. , that is, the tandem sequence between the coils needs to be adjusted.

However, in practical applications, the double-layer fractional-slot concentrated winding motor may need to modify the number of poles due to unreasonable electromagnetic design and other reasons, so the winding arrangement also needs to be changed, so the tandem sequence between the coils needs to be adjusted. Existing motor winding connection methods are roughly divided into three types: (1) lead wires (2) bus bars (3) circuit boards. Among them, the lead wire is bundled at the end of the winding. Once varnished or potted, it is difficult to separate the lead wire and reconnect the windings. Although the bus bar and the circuit board are supported and fixed by the skeleton, they are not affected by the varnish or potting. It can be separated from the coil, but it is often customized according to the pre-designed winding arrangement of the number of poles and slots, and it is difficult to flexibly apply to other poles.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an outer rotor type motor winding junction device with adjustable connection sequence, which can avoid the problem of re-offline or re-customization of the busbar, and realize flexible adjustment of the junction sequence of the windings.

In order to achieve the above object, the present invention provides the following technical solutions:

An external rotor type motor winding junction device with adjustable connection sequence, the device includes a stator coil, a stator core, a stator support, a winding junction PCB board, a winding junction wire, a PCB board packaging box, a PCB board packaging cover and windings bus;

A plurality of the stator coils are evenly arranged in a circle, and each of the stator coils is wound and fixed on the corresponding teeth of the stator core; the stator core is sleeved on the stator support; the stator support is a circle an annular support structure for fixedly supporting the stator core and the PCB board packaging box;

The PCB board packaging box is fixedly installed on the stator support, and the winding junction PCB board is fixedly installed in the PCB board packaging box;

The winding junction PCB board is provided with a pad, and the leads at both ends of the stator coil are welded on the pad, and the winding junction wire is welded on the pad according to the winding arrangement, and can be Adjust the welding position of the winding junction wire on the pad of the winding junction PCB board for different winding arrangements;

One end of the winding bus is welded on the pad, and the other end of the winding bus is drawn out and connected to an external power supply line;

The PCB board packaging cover and the PCB board packaging box are tightly and fixedly connected to form a packaging cavity, and the packaging cavity is used to connect the lead wires at both ends of the stator coil located in the packaging cavity, the windings are connected to the PCB board, and the windings are connected to the PCB. Wiring and winding busses are packaged.

Optionally, 12*n pads arranged in a circle are evenly distributed on the winding junction PCB board, where n represents the number of motor slots;

All pads are divided into the first layer of pads, the second layer of pads, the third layer of pads, the fourth layer of pads, the fifth layer of pads and the sixth layer of pads according to the diameter of the circle. The number of pads on the layer pads is 2*n, and the pad positions between different layers correspond and are distributed along the same radial direction;

All the pads in the sixth layer of pads are connected in series, the first layer of pads, the second layer of pads, the third layer of pads, the fourth layer of pads and all The pads distributed in the same radial direction in the fifth layer of pads are connected in series.

Optionally, the winding junction line includes an A-phase winding junction line, a B-phase winding junction line, and a C-phase winding junction line;

Wherein, the A-phase winding connection wires are respectively welded on the second-layer pads and the fifth-layer pads; the B-phase winding connection wires are respectively welded on the third-layer pads and the fifth-layer pads. on the five-layer pads; the C-phase winding junction wires are respectively welded on the fourth-layer pads and the fifth-layer pads;

The A-phase winding junction line, the B-phase winding junction line and the C-phase winding junction line form a three-phase junction line and are welded from the fifth layer of pads to the sixth layer of pads to realize three-phase The tandem connection of the neutral point of the winding.

Optionally, one end of the winding bus is welded on the fifth-layer pad, and the other end of the winding bus is drawn out from a wire hole in the center of the stator support and connected to an external power supply line.

Optionally, each of the inner and outer edges of the bottom surface of the PCB board packaging box is provided with a circle of raised side walls, and the raised side walls are used to increase the height of the windings meeting the PCB board.

Optionally, 2*n first through holes are provided on the raised sidewall of the outer edge of the PCB board packaging box, and the first through holes are used to allow the leads of the stator coils to enter from the first through holes to the first through holes. In the packaging cavity, wherein, n represents the number of motor slots;

A plurality of second through holes are provided on the protruding side walls of the inner edge of the PCB board packaging box, and the second through holes are used to allow the soldered ends of the winding busses to enter the packaging cavity from the second through holes .

Optionally, a plurality of limit posts are provided on the raised side walls of the outer edge of the PCB board packaging box, and the limit posts are used to limit and fix the winding junction PCB board.

Optionally, a plurality of limit holes adapted to the limit posts are opened at the edge of the winding junction PCB board, and the limit holes are used for the limit posts to be snapped into the limit posts. In the position hole, the limit and fixation of the winding junction to the PCB board is realized.

Optionally, the PCB board packaging box is provided with a plurality of first installation holes, and the first installation holes are used in cooperation with bolts to fix the PCB board packaging box on the stator support.

Optionally, the PCB board package cover is provided with a plurality of second installation holes adapted to the first installation holes, and the second installation holes are used to cooperate with the first installation holes and the bolts Using, the PCB board packaging box and the PCB board packaging cover are fixed on the stator support.

Compared with the prior art, the present invention provides an external rotor type motor winding junction device with adjustable sequence. In the device, the winding junction PCB board is provided with pads, and the leads at both ends of the stator coil are welded to the pads. And the winding junction wire is welded on the pad according to different winding arrangements, and the welding position of the winding junction wire on the pad of the winding junction PCB board can be flexibly adjusted according to different winding layout requirements. The leads at both ends of the stator coil are welded to the winding junction PCB board, and the winding junction function is realized on the winding junction PCB board, thereby reducing the axial length of the winding end, saving the space of the winding end, and making the winding end directly Contact with air enhances the heat dissipation capability of the winding ends. By using the winding arrangement of the winding junction wire to be welded to different positions on the pad, the flexible adjustment of the winding junction under different poles is realized, avoiding the trouble of re-offline or re-customizing the bus bar or circuit board, shortening the time. Processing time, cost savings, and increased work efficiency.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic structural diagram of an outer rotor type motor winding junction device with adjustable sequence provided in Embodiment 1 of the present invention;

FIG. 2 is a disassembled schematic diagram of the outer rotor type motor winding junction device with adjustable sequence provided in Embodiment 1 of the present invention;

3 is a schematic diagram of a winding junction PCB board provided in Embodiment 1 of the present invention;

4 is a schematic diagram of a winding junction line and a winding bus line provided in Embodiment 1 of the present invention;

5 is a schematic diagram of a PCB board packaging box and a packaging cover provided in Embodiment 1 of the present invention;

6 is a schematic diagram of the 20-pole 24-slot winding arrangement and winding junction connection provided in Embodiment 1 of the present invention;

7 is a schematic diagram of the 22-pole 24-slot winding arrangement and winding junction connection provided in Embodiment 2 of the present invention;

FIG. 8 is a schematic diagram of the arrangement of 16-pole 24-slot windings and the junction of windings according to Embodiment 3 of the present invention.

Description of reference numbers:

1-stator coil, 2-stator core, 3-stator support, 4-winding junction PCB board, 5-winding junction wire, 6-PCB board packaging box, 7-PCB board packaging cover, 8-winding bus, 9- Pads, 901 - first layer pads, 902 - second layer pads, 903 - third layer pads, 904 - fourth layer pads, 905 - fifth layer pads, 906 - sixth layer pads , 10-limiting hole, 11-first mounting hole, 12-first perforation, 13-second perforation, 14-protruding sidewall, 15-limiting post, 16-second mounting hole.

Detailed ways

In order to clearly describe the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. For example, the first threshold and the second threshold are only used to distinguish different thresholds, and the sequence of the first threshold is not limited. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like are not necessarily different.

It should be noted that, in the present invention, words such as "exemplary" or "for example" are used to represent examples, illustrations or illustrations. Any embodiment or design described herein as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner.

The purpose of the present invention is to provide an outer rotor type motor winding tandem device with adjustable connection sequence, which can avoid the problem of re-offline or re-customize the busbar, and flexibly adjust the connection sequence of the windings.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in FIG. 1 and FIG. 2 , this embodiment proposes an outer rotor type motor winding junction device with adjustable connection sequence. The device includes a stator coil 1 , a stator core 2 , a stator support 3 , and a winding junction PCB. Board 4 , winding junction wire 5 , PCB board packaging box 6 , PCB board packaging cover 7 and winding bus 8 .

Wherein, a plurality of the stator coils 1 are evenly arranged in a circle, and each of the stator coils 1 is wound and fixed on the corresponding teeth of the stator core 2 . The stator iron core 2 is sleeved on the stator support 3 ; the stator support 3 is an annular support structure for fixedly supporting the stator iron core 2 and the PCB board packaging box 6 .

In this embodiment, the stator support 3 is a "hub"-shaped annular support structure, and a hollow support column protruding outward is provided at the center of one end of the stator support 3. The PCB board packaging box 6 and The PCB board packaging cover 7 and the like are sleeved on the support column. A limit surface is provided at the outer edge of the other end of the stator support 3 , and the limit surface is used to limit the stator core 2 .

The PCB board packaging box 6 is fixedly installed on the stator support 3 , and the winding junction PCB board 4 is fixedly installed in the PCB board packaging box 6 .

Pads 9 are provided on the winding junction PCB board 4 , the leads at both ends of the stator coil 1 are welded on the pads 9 , and the winding junction wires 5 are welded on the pads 9 according to the required winding arrangement. The welding position of the winding junction wire 5 on the bonding pad 9 of the winding junction PCB board 4 can be flexibly adjusted according to different winding arrangements.

One end of the winding bus 8 is welded on the pad 9, and the other end of the winding bus 8 is drawn out and connected to an external power supply line.

The PCB board packaging cover 7 is tightly and fixedly connected with the PCB board packaging box 6 to form a packaging cavity, and the packaging cavity is used to connect the leads and windings at both ends of the stator coil 1 located in the packaging cavity to the PCB board. 4. The winding junction line 5 and the winding bus line 8 are packaged.

As shown in FIG. 3 , in this embodiment, 12*n pads 9 arranged in a circle are evenly distributed on the winding junction PCB board 4 , where n represents the number of motor slots.

In this embodiment, there are 6 layers of pads 9 arranged in a circle. Since the pads 9 are arranged in a circle, all the pads 9 are divided into the first layer of pads 901 , the second layer of The layer pads 902, the third layer pads 903, the fourth layer pads 904, the fifth layer pads 905 and the sixth layer pads 906, that is, all the pads 9 on the entire winding junction PCB board 4 are connected from the outside. It is divided into six layers of pads, including the first layer of pads 901, the second layer of pads 902, the third layer of pads 903, the fourth layer of pads 904, the fifth layer of pads 905 and the sixth layer of pads 906. 9 structure. In addition, the number of pads 9 on each layer of pads 9 is 2*n, and the positions of the pads 9 between different layers correspond to each other and are distributed along the same radial direction.

In this embodiment, all the pads 9 in the sixth layer of pads 906 are connected in series, the first layer of pads 901 , the second layer of pads 902 , the third layer of pads 903 , and the fourth layer of pads The pads 904 and the pads 9 distributed in the same radial direction in the fifth layer of pads 905 are connected in series.

In the present invention, in order to indicate the welding position of the winding junction wire 5 on the winding junction PCB board 4, the naming method of the pad 9 is defined as (x, y), wherein, x represents the number of layers where the pad 9 is located, x=1, 2, 3, . . , 6, respectively represent the first layer pads 901, the second layer pads 902, the third layer pads 903, the fourth layer pads 904, the fifth layer pads 905 and the sixth layer pads 906 ; y represents the position on the circle where the pad 9 is located, y=1, 2, 3, . . . , 2*n, and counts clockwise in this embodiment.

Figure 3 shows a 24-slot winding junction PCB board, that is, n=24, the pads (1, 1) and the pads (3, 12) are marked in the figure, and the pads (1, 1) represent the first-layer pads The pad 9 at the first position on 901, the pad (3, 12) represents the pad 9 at the 12th position on the third-layer pad 903, and this example illustrates the naming method of the pad 9.

The present invention can flexibly adjust the welding position of the winding junction wire 5 on the bonding pad 9 of the winding junction PCB board 4 according to the requirements of different winding arrangements by setting the multi-layer circumferentially arranged pads 9 . At the same time, a naming method of the pad 9 is also proposed for the welding position of the pad 9, which can accurately determine and describe the specific welding position of the winding junction wire 5 on the winding junction PCB board 4. In addition, by welding the leads at both ends of the stator coil 1 to the winding junction PCB board 4, and realizing the winding junction function on the winding junction PCB board 4, the axial length of the winding end is reduced, and the winding end is saved. The outer space makes the winding end directly contact with the air, which enhances the heat dissipation capability of the winding end. By using the winding arrangement of the winding junction line 5 to be welded to different positions on the pad 9, the flexible adjustment of the winding junction under different pole numbers is realized, and the trouble of re-offline or re-customization of the bus bar or circuit board is avoided. The processing time is shortened, the cost is saved, and the work efficiency is improved.

In this embodiment, the winding junction wire 5 is made of single-core hard copper wire, which is wrapped with a flame-retardant sheath, which is easy to shape and facilitates the interception of different wire lengths. It can be adjusted according to different winding arrangements. It can avoid the problem of re-offline or re-customization of the busbar, and flexibly adjust the winding sequence.

As shown in FIG. 4 , the winding junction line 5 includes an A-phase winding junction line, a B-phase winding junction line, and a C-phase winding junction line. Wherein, the A-phase winding connection wires are welded on the second-layer pads 902 and the fifth-layer pads 905 respectively; the B-phase winding connection wires are welded on the third-layer pads 903 and 905 respectively. on the fifth-layer pad 905 ; the C-phase winding connecting wire is welded on the fourth-layer pad 904 and the fifth-layer pad 905 respectively. The A-phase winding junction line, the B-phase winding junction line and the C-phase winding junction line form a three-phase junction line, and the three-phase junction line is welded to the sixth layer of welding by the fifth-layer pad 905 . The disk 906 realizes the tandem connection of the neutral points of the three-phase windings.

In this embodiment, the winding bus 8 adopts a multi-strand copper core flexible wire, which is wrapped with a flame retardant sheath. One end of the winding bus 8 is welded on the fifth-layer pad 905, and the other end of the winding bus 8 is drawn out from the wire hole in the center of the stator support 3 and can be connected to an external power supply line, so as to realize the connection between the motor and the motor. Power supply for the winding tandem device.

As shown in FIG. 5 , the inner and outer edges of the bottom surface of the PCB board packaging box 6 are respectively provided with a circle of raised side walls 14 , and the raised side walls 14 are used to increase the height of the winding junction PCB board 4 , that is, a pad The windings are connected to the PCB board 4 so as to prevent the back of the windings-connected PCB board 4 from being placed in the PCB board packaging box 6 flatly due to bumps of solder joints.

There are 2*n first through holes 12 on the convex sidewall 14 of the outer edge of the PCB board packaging box 6, which are equal to the number of pads 9 in each layer, and the first through holes 12 are used for the stator coils. The lead of 1 enters the package cavity from the first through hole 12 , where n represents the number of motor slots.

A plurality of second through holes 13 are provided on the raised sidewall 14 of the inner edge of the PCB board packaging box 6 , and the second through holes 13 are used to allow the soldered ends of the winding bus 8 to enter through the second through holes 13 into the packaging cavity. In this embodiment, there are three second through holes 13 , which are evenly distributed on the protruding side walls 14 of the inner edge of the PCB board packaging box 6 .

As shown in FIG. 5 , a plurality of limit posts 15 are provided on the raised side wall 14 of the outer edge of the PCB board packaging box 6 , and the limit posts 15 are used to limit the windings to the PCB board 4 . The position is fixed to prevent the winding junction PCB board 4 from moving in the packaging cavity.

As shown in FIG. 3 , a plurality of limit holes 10 adapted to the limit posts 15 are opened at the edge of the winding junction PCB board 4 , and the limit holes 10 are used to make the limit posts 15 is snapped into the limiting hole 10 to realize the limiting and fixing of the winding junction PCB board 4 . In this embodiment, there are four limit posts 15 and four limit holes 10 , and they are all semicircular.

The PCB board packaging box 6 is provided with a plurality of first installation holes 11, and the PCB board packaging cover 7 is provided with a plurality of second installation holes 16 adapted to the first installation holes 11, such as As shown in FIG. 5 , in this embodiment, there are four first mounting holes 11 and four second mounting holes 16 . The second mounting holes 16 are used in cooperation with the first mounting holes 11 and the bolts to fix the PCB board packaging box 6 and the PCB board packaging cover 7 to the stator support 3 . The first mounting holes 11 are used in conjunction with bolts to fix the PCB board packaging box 6 on the stator support 3 .

As shown in FIG. 6 , this embodiment lists an external rotor type motor winding junction device with adjustable sequence, wherein the number of motor slots is 24, the number of poles is 20, and the winding junction is as follows: all stator coils The lead wires at both ends of 1 are welded to the first-layer pads 901 of the winding junction PCB board 4, wherein:

There are a total of 8 A-phase winding junction lines. According to the naming method of the pad 9 in Example 1, the welding positions of the two ends of each A-phase winding junction line are [(2, 1) (2, 3)], [(2, 12)(2,14)], [(2,15)(2,24)], [(2,26)(2,37)], [(2,39)(2,48)], [( 5, 25)(5, 27)], [(5, 36)(5, 38)], [(5, 13)(6, 13)].

There are 8 B-phase winding junction wires in total, and the welding positions at both ends of each B-phase winding junction wire are [(3,7)(3,16)], [(3,17)(3,19)], [(3 , 28)(3, 30)], [(3, 31)(3, 40)], [(3, 42)(3, 5)], [(5, 4)(5, 6)], [ (5,41)(5,43)], [(5,29)(6,29)].

There are 8 C-phase winding junction wires in total, and the welding positions at both ends of each C-phase winding junction wire are [(4, 10)(4, 21)], [(4, 23)(4, 32)], [(4 , 33)(4, 35)], [(4, 44)(4, 46)], [(4, 47)(4, 8)], [(5, 9)(5, 11)], [ (5,20)(5,22)], [(5,45)(6,45)].

The welding position of one end of the winding bus line of the A-phase winding bus line is (5, 2), the welding position of one end of the winding bus line of the B-phase winding bus line is (5, 18), and the welding position of one end of the winding bus line of the C-phase winding bus line is (5, 34).

Example 2

As shown in FIG. 7 , this embodiment lists another external rotor type motor winding junction device with adjustable connection sequence. The structure of the device is the same as that of Embodiment 1, but the number of motor slots in this embodiment is 24, and the poles are 24. The number is 22, and the windings are connected as follows: the lead wires at both ends of all the stator coils 1 are welded to the first-layer pads 901 of the windings-connected PCB board 4, wherein:

There are a total of 8 A-phase winding junction lines. According to the naming method of the pad 9 in Example 1, the welding positions of the two ends of each A-phase winding junction line are [(2, 1) (2, 3)], [(2, 20)(2, 22)], [(2, 23)(2, 25)], [(2, 27)(2, 44)], [(2, 46)(2, 48)], [( 5,24)(5,26)], [(5,45)(5,47)], [(5,21)(6,21)].

There are 8 B-phase winding junction wires in total, and the welding positions of both ends of each B-phase winding junction wire are [(3,4)(3,6)], [(3,7)(3,9)], [(3 , 11)(3, 28)], [(3, 30)(3, 32)], [(3, 33)(3, 35)], [(5, 8)(5, 10)], [ (5,29)(5,31)], [(5,5)(6,5)].

There are a total of 8 C-phase winding junction wires, and the welding positions at both ends of each C-phase winding junction wire are [(4, 14) (4, 16)], [(4, 17)(4, 19)], [(4 , 36)(4, 38)], [(4, 39)(4, 41)], [(4, 43)(4, 12)], [(5, 13)(5, 15)], [ (5,40)(5,42)], [(5,37)(6,37)].

The welding position of one end of the winding bus line of the A-phase winding bus line is (5, 2), the welding position of one end of the winding bus line of the B-phase winding bus line is (5, 34), and the welding position of one end of the winding bus line of the C-phase winding bus line is (5, 18).

Example 3

As shown in FIG. 8 , this embodiment lists another external rotor type motor winding junction device with adjustable connection sequence. The structure of the device is the same as that of Embodiment 1, but the number of motor slots in this embodiment is 24, and the poles are 24. The number is 16, and the windings are connected as follows: the lead wires at both ends of all the stator coils 1 are welded to the first-layer pads 901 of the windings-connected PCB board 4, wherein:

There are a total of 8 A-phase winding junction lines. According to the naming method of the pad 9 in Example 1, the welding positions of the two ends of each A-phase winding junction line are [(2, 3) (2, 8)], [(2, 9)(2,14)], [(2,15)(2,20)], [(2,21)(2,26)], [(2,27)(2,32)], [( 2,33)(2,38)], [(2,39)(2,44)], [(5,45)(6,45)].

There are 8 B-phase winding junction wires in total, and the welding positions of both ends of each B-phase winding junction wire are [(3,5)(3,10)], [(3,11)(3,16)], [(3 , 17)(3, 22)], [(3, 23)(3, 28)], [(3, 35)(3, 40)], [(3, 41)(3, 46)], [ (3,47)(3,4)], [(5,29)(6,29)].

There are a total of 8 C-phase winding junction wires, and the welding positions at both ends of each C-phase winding junction wire are [(4,1)(4,6)], [(4,7)(4,12)], [(4 , 19)(4, 24)], [(4, 25)(4, 30)], [(4, 31)(4, 36)], [(4, 37)(4, 42)], [ (4,43)(4,48)], [(5,13)(6,13)].

The welding position of one end of the winding bus line of the A-phase winding bus line is (5, 2), the welding position of one end of the winding bus line of the B-phase winding bus line is (5, 34), and the welding position of one end of the winding bus line of the C-phase winding bus line is (5, 18).

It should be noted that, in addition to the above examples, the 24-slot can also be matched with 26-pole, 28-pole or 32-pole. The 24-slot 26-pole and 24-slot 22-pole winding connection methods are the same, only need to exchange the B-phase and C-phase winding buses; The winding busses of phase and C-phase can be interchanged; the 24-slot 32-pole and 24-slot 16-pole winding connection methods are the same, and only the winding busses of B-phase and C-phase are interchanged.

It should also be noted that the present invention does not limit the specific numbers of the number of slots and poles of the motor, and these values are not fixed and unique, and can be determined by themselves according to the actual situation.

Although the invention has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made therein without departing from the spirit and scope of the invention. Accordingly, this specification and drawings are merely illustrative of the invention as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations or equivalents within the scope of the invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. An external rotor type motor winding junction device with adjustable sequence, characterized in that the device comprises a stator coil (1), a stator core (2), a stator support (3), a winding junction PCB board ( 4), a winding junction wire (5), a PCB board packaging box (6), a PCB board packaging cover (7) and a winding bus (8); A plurality of the stator coils (1) are evenly arranged in a circle, and each of the stator coils (1) is wound and fixed on the corresponding teeth of the stator iron core (2); the stator iron core (2) is sleeved on the on the stator support (3); the stator support (3) is a ring-shaped support structure for fixedly supporting the stator core (2) and the PCB board packaging box (6); The PCB board packaging box (6) is fixedly installed on the stator support (3), and the winding junction PCB board (4) is fixedly installed in the PCB board packaging box (6); Pads (9) are provided on the winding junction PCB board (4), lead wires at both ends of the stator coil (1) are welded on the pads (9), and the winding junction wires (5) are based on the The winding arrangement is welded on the pad (9), and according to different winding arrangement requirements, the arrangement of the winding junction line (5) on the pad (9) of the winding junction PCB board (4) can be adjusted. Position of welding; One end of the winding bus (8) is welded on the pad (9), and the other end of the winding bus (8) is drawn out and connected to an external power supply line; The PCB board packaging cover (7) is tightly and fixedly connected with the PCB board packaging box (6) to form a packaging cavity, and the packaging cavity is used for the lead wires at both ends of the stator coil (1) located in the packaging cavity , a winding junction PCB board (4), a winding junction wire (5) and a winding bus (8) for packaging. 2. The outer rotor type motor winding junction device with adjustable sequence according to claim 1, characterized in that, on the said winding junction PCB board (4), there are 12*n solder joints arranged in a circle evenly distributed. Disk (9), where n represents the number of motor slots; All pads (9) are divided into first-layer pads (901), second-layer pads (902), third-layer pads (903), and fourth-layer pads (904) in descending order of diameter ), the fifth layer of pads (905) and the sixth layer of pads (906), the number of pads (9) on each layer of pads is 2*n, and the positions of the pads (9) between different layers Corresponding and distributed along the same radial direction; All the pads (9) in the sixth layer of pads are connected in series, the first layer of pads (901), the second layer of pads (902), the third layer of pads ( 903), the pads (9) distributed in the same radial direction in the fourth layer of pads (904) and the fifth layer of pads (905) are connected in series. 3. The external rotor type motor winding junction device with adjustable sequence according to claim 2, wherein the winding junction line (5) comprises A-phase winding junction line, B-phase winding junction line and C-phase winding junction line Winding junction line; Wherein, the A-phase winding connection wires are respectively welded on the second-layer pads (902) and the fifth-layer pads (905); the B-phase winding connection wires are respectively welded on the third layer the pads (903) and the fifth-layer pads (905); the C-phase winding connection wires are respectively welded on the fourth-layer pads (904) and the fifth-layer pads (905) ; The A-phase winding junction line, the B-phase winding junction line, and the C-phase winding junction line constitute a three-phase junction line and are welded to the sixth layer of pads ( 906) to realize the tandem connection of the neutral points of the three-phase windings. 4. The external rotor type motor winding junction device with adjustable connection sequence according to claim 2, characterized in that, one end of the winding bus (8) is welded on the fifth-layer pad (905), The other end of the winding bus (8) is drawn out from the wire hole in the center of the stator support (3) and is connected to an external power supply line. 5. The outer rotor type motor winding junction device with adjustable connection sequence according to claim 1, characterized in that, the inner and outer edges of the bottom surface of the PCB board packaging box (6) are each provided with a circle of raised side walls (14). ), the raised side walls (14) are used to increase the height of the winding junction PCB board (4). 6 . The outer rotor type motor winding junction device with adjustable sequence according to claim 5 , wherein 2 *n first through holes (12), the first through holes (12) are used to allow the lead wires of the stator coil (1) to enter the packaging cavity from the first through holes (12), wherein n Indicates the number of motor slots; A plurality of second through holes (13) are provided on the protruding side walls (14) of the inner edge of the PCB board packaging box (6), and the second through holes (13) are used to make the winding bus line (8) The soldering end enters into the package cavity from the second through hole (13). 7. The outer rotor type motor winding junction device with adjustable connection sequence according to claim 5, characterized in that there are multiple There are limit posts (15), the limit posts (15) are used to limit and fix the winding junction PCB board (4). 8 . The outer rotor type motor winding junction device with adjustable connection sequence according to claim 7 , characterized in that, a plurality of limit posts are provided at the edge of the winding junction PCB board ( 4 ). 9 . (15) An adapted limit hole (10), the limit hole (10) is used to snap the limit post (15) into the limit hole (10), so as to realize the adjustment of the winding The limit fixing of the tandem PCB board (4). 9 . The outer rotor type motor winding junction device with adjustable connection sequence according to claim 1 , wherein the PCB board packaging box ( 6 ) is provided with a plurality of first mounting holes ( 11 ), so that the The first mounting holes (11) are used in cooperation with bolts to fix the PCB board packaging box (6) on the stator support (3). 10. The external rotor type motor winding junction device with adjustable sequence according to claim 9, characterized in that, the PCB board packaging cover (7) is provided with a plurality of first mounting holes (11) ) adapted second mounting holes (16), the second mounting holes (16) are used in cooperation with the first mounting holes (11) and the bolts, and the PCB board packaging box (6) and the PCB board packaging cover (7) is fixed on the stator support (3).

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