A disc motor and a stator

Abstract

The present invention discloses a disc motor and a stator. The stator includes a PCB winding assembly, and the PCB winding assembly includes an insulating board and a PCB winding printed on the insulating board. The PCB winding includes a plurality of coils, and the coils are printed on the insulating board. In this solution, the PCB winding is arranged on the insulating board to form the stator of the motor, replacing the cooperation between the iron core and the winding of a conventional motor, eliminating the relatively complex iron core manufacturing process and the winding inserting process, greatly simplifying the processing process of the stator, thereby improving the production efficiency of the stator to a certain extent. At the same time, the iron core is eliminated, reducing the production cost of the stator.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and particularly relates to a disc motor and a stator. Background Art

[0002] The stator of a conventional motor includes an iron core and windings. The manufacturing process of the iron core and the winding insertion process are both relatively complex, resulting in low production efficiency of the stator.

[0003] Therefore, how to simplify the processing process of the stator to improve the production efficiency of the stator has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a stator to simplify the processing process of the stator and improve the production efficiency of the stator. The present invention also provides a disc motor.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A stator suitable for a disc motor includes at least one PCB winding assembly. The PCB winding assemblies are arranged in a stacked manner. The PCB winding assembly includes an insulating board and a plurality of PCB windings printed on the insulating board. The number of the PCB windings is equal to the number of phases of the disc motor. The plurality of PCB windings are arranged in a stacked manner and adjacent PCB windings are connected in sequence. An input conductor and a tail conductor are provided on the PCB winding.

[0007] The PCB winding includes a plurality of coils. The number of the coils is equal to the number of poles of the disc motor. The coil includes N first conductors arranged side by side on the upper layer of the insulating board and N second conductors arranged side by side on the lower layer of the insulating board. The first conductor and the second conductor are arranged radially. The outer end of the first conductor is connected to the outer end of the second outer end conductor, and the inner end of the first conductor is connected to the inner end of the second conductor. One of the first conductors of one of the adjacent two coils is connected to the first conductor in the same position of the other coil, and one of the second conductors of one of the adjacent two coils is connected to the second conductor in the same position of the other coil. Wherein N is the number of turns and N is a positive integer.

[0008] Preferably, in the above stator, both the first conductor and the second conductor include an inner end conductor, a working conductor, and an outer end conductor sequentially arranged from the middle to the end of the PCB winding.

[0009] The inner end conductor of the first conductor is connected to the inner end conductor of the second conductor in the corresponding position.

[0010] The outer end conductor of the first conductor is connected to the outer end conductor of the second conductor at the corresponding position.

[0011] Preferably, in the above stator, two adjacent coils are connected by an auxiliary conductor assembly, and the auxiliary conductor assembly includes:

[0012] A first auxiliary conductor located in the lower layer of the resin plate, and a first end of the first auxiliary conductor is connected to one of the second conductors of the first coil among two adjacent coils;

[0013] A second auxiliary conductor located in the upper layer of the resin plate and arranged side by side with the first conductor, a first end of the second auxiliary conductor is connected to a second end of the first auxiliary conductor, a second end of the second auxiliary conductor is connected to one of the second conductors of the second coil among two adjacent coils, and the position of the second conductor of the second coil connected to the second auxiliary conductor is the same as the position of the second conductor of the first coil connected to the first auxiliary conductor;

[0014] A third auxiliary conductor located in the lower layer of the resin plate, and a first end of the third auxiliary conductor is connected to one of the first conductors of the second coil;

[0015] A fourth auxiliary conductor located in the upper layer of the resin plate, a first end of the fourth auxiliary conductor is connected to a second end of the third auxiliary conductor, a second end of the fourth auxiliary conductor is connected to one of the first conductors of the third coil adjacent to the second coil, and the position of the first conductor of the third coil connected to the fourth auxiliary conductor is the same as the position of the first conductor of the second coil connected to the third auxiliary conductor.

[0016] Preferably, in the above stator, an input conductor is provided on N first conductors arranged side by side and / or N second conductors arranged side by side.

[0017] Preferably, in the above stator, a tail-end conductor is provided on N first conductors arranged side by side and / or N second conductors arranged side by side.

[0018] Preferably, in the above stator, the tail-end conductors of adjacent PCB windings are connected in sequence.

[0019] Preferably, in the above stator, the tail-end conductor of the PCB winding located in the upper layer is connected to the input conductor of the PCB winding located in the lower layer.

[0020] Preferably, in the above stator, a hollow groove is formed in the working conductor.

[0021] Preferably, in the above stator, the first conductor and the second conductor are copper conductors.

[0022] A disc motor includes a stator, and the stator is the stator described in any one of the above solutions.

[0023] As can be seen from the above technical solutions, the stator provided by the present invention includes a PCB winding assembly. The PCB winding assembly includes an insulating board and a PCB winding printed on the insulating board. The PCB winding includes a plurality of coils, and the coils are printed on the insulating board. In this solution, the PCB winding is arranged on the insulating board to form the stator of the motor, replacing the cooperation between the iron core and the coil of the conventional motor, eliminating the relatively complex iron core manufacturing process and the winding laying process, greatly simplifying the processing process of the stator, thereby improving the production efficiency of the stator to a certain extent. At the same time, the iron core is eliminated, reducing the production cost of the stator.

[0024] This solution also discloses a disc motor, including a stator, and the stator is the stator described in any one of the above solutions. Since the stator has the above technical effects, the disc motor with this stator also has the same technical effects, which will not be elaborated here. Brief Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic structural diagram of the stator provided by the embodiment of the present invention;

[0027] Figure 2 It is a schematic structural diagram of the A-phase winding assembly provided by the embodiment of the present invention;

[0028] Figure 3 It is a schematic structural diagram of the upper-layer winding provided by the embodiment of the present invention;

[0029] Figure 4 It is a schematic structural diagram of the lower-layer winding provided by the embodiment of the present invention;

[0030] Figure 5 It is a schematic structural diagram of the B-phase winding assembly provided by the embodiment of the present invention;

[0031] Figure 6 It is a schematic structural diagram of the C-phase winding assembly provided by the embodiment of the present invention.

[0032] Among them,

[0033] 1. PCB winding assembly, 11. Insulating plate, 12. PCB winding, 121. Coil, 1211. First conductor, 1212. Second conductor, 12111. Inner end conductor, 12112. Working conductor, 12113. Outer end conductor, 1213. Auxiliary conductor assembly, 12131. First auxiliary conductor, 12132. Second auxiliary conductor, 12133. Third auxiliary conductor, 12134. Fourth auxiliary conductor, 122. Tail end conductor, 123. Input conductor. Detailed implementation manner

[0034] The present invention discloses a stator to simplify the processing procedure of the stator and improve the production efficiency of the stator. The present invention also discloses a disc motor.

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Refer to Figures 1-6 , the present invention discloses a stator applicable to a disc motor.

[0037] The stator includes at least one PCB winding assembly 1. Specifically, the number of PCB winding assemblies 1 can be one, or two, three or even more. The number of PCB winding assemblies 1 is selected according to actual needs. When the number of PCB winding assemblies 1 is at least two, multiple PCB winding assemblies 1 are coaxially stacked. The connection means between adjacent PCB winding assemblies 1 are very mature connection means in the prior art. Those skilled in the art can select a means to connect adjacent PCB winding assemblies 1 according to actual needs, and no specific limitation is made here.

[0038] The PCB winding assembly 1 includes an insulating plate 11 and multiple PCB windings 12 printed on the insulating plate 11. The number of PCB windings 12 is equal to the number of phases of the disc motor.

[0039] When the disc motor is a three-phase motor, the number of PCB windings 12 is three; when the disc motor is a four-phase motor, the number of PCB windings 12 is four; the disc motor can also be a five-phase motor or a six-phase motor, and the number of PCB windings 12 is five or six accordingly, and so on.

[0040] An input conductor 123 and a tail conductor 122 are provided on the PCB winding 12. The input conductor 123 is used to introduce external current into the PCB winding 12, and the input conductor 123 and / or the tail conductor 122 are used to realize the connection of adjacent PCB windings 12.

[0041] Specifically, both the input conductor 123 and the tail conductor 122 are also printed on the insulating board 11.

[0042] A plurality of PCB windings 12 are coaxially stacked, such as Figure 1 、 2 shown in Figures 5 and 6.

[0043] The PCB winding 12 includes an upper and a lower layer structure, and insulation is provided between the upper and lower layers by the insulating board 11.

[0044] Specifically, the upper and lower layer structures of the PCB winding 12 can be located on the upper and lower end faces of the same insulating board 11 respectively, or can be located on the upper end face of one insulating board 11 and the lower end face of another insulating board 11 among different insulating boards 11.

[0045] Preferably, the insulating board 11 in this solution is a resin board.

[0046] Specifically, the upper and lower layer structures include a structure composed of the first conductors 1211 located on the upper layer of the insulating board 11 and a structure composed of the second conductors 1212 located on the lower layer of the insulating board 11. As Figure 3 and 4 shown, where Figure 3 is the upper layer structure, Figure 4 is the lower layer structure, and the first conductors 1211 on the upper layer of the insulating board 11 and the corresponding second conductors 1212 on the lower layer of the insulating board 11 form a coil 121.

[0047] Each PCB winding 12 includes a plurality of coils 121. The number of coils 121 is equal to the number of poles of the disc motor, and the span between adjacent first conductors 1211 and second conductors 1212 is one pole pitch. The current directions between adjacent two coils 121 are opposite. For example, the current direction in one coil 121 is clockwise, and the current direction in the adjacent coil 121 is counterclockwise.

[0048] As Figure 1 、 2 shown in Figures 5 and 6, the coil 121 includes N first conductors 1211 arranged side by side on the upper layer of the insulating board 11 and N second conductors 1212 arranged side by side on the lower layer of the insulating board 11.

[0049] The first conductor 1211 and the second conductor 1212 are respectively located in the upper and lower layers of the insulating plate 11 and are arranged in mirror symmetry. To achieve current transmission between the first conductor 1211 and the second conductor 1212, the upper end of the first conductor 1211 is connected to the upper end of the second conductor 1212, and the lower end of the first conductor 1211 and the lower end of the second conductor 1212 are connected.

[0050] As Figures 1-6 described, the upper end of the first conductor 1211 and the upper end of the second conductor 1212 are connected through a first connection via hole, and the lower end of the first conductor 1211 and the lower end of the second conductor 1212 are connected through a second connection via hole.

[0051] As Figures 1-6 described, the coil 121 formed by the first conductor 1211 and the second conductor 1212 is in a fan-shaped or hexagonal structure, and the acting parts of the first conductor 1211 and the second conductor 1212 are the parts of the first conductor 1211 and the second conductor 1212 along the radial direction of the PCB winding 12.

[0052] Two adjacent coils 121 are connected in sequence. Specifically, one of the first conductors 1211 of one of the two adjacent coils 121 is connected to the first conductor 1211 in the same position of the other coil 121, and one of the second conductors 1212 of one of the two adjacent coils 121 is connected to the second conductor 1212 in the same position of the other coil 121, so as to realize the reverse current of two adjacent coils 121.

[0053] In this solution, N represents the number of turns, and N is a positive integer.

[0054] It should be noted here that the N first conductors 1211 of each coil 121 are parallel to each other and do not overlap with each other, the N second conductors 1212 of each coil 121 are parallel to each other and do not overlap with each other, and the first conductors 1211 of adjacent PCB windings 12 do not overlap, and the second conductors 1212 of adjacent PCB windings 12 do not overlap either.

[0055] In this solution, the stator includes at least one PCB winding assembly 1. The PCB winding assembly 1 includes an insulating plate 11 and a PCB winding 12 printed on the insulating plate 11. The PCB winding 12 includes a plurality of coils 121, and the coils 121 are printed on the insulating plate 11. In this solution, the PCB winding 12 is arranged on the insulating plate 11 to form the stator of the motor, replacing the cooperation between the iron core and the coil 121 of the conventional motor, eliminating the relatively complex iron core manufacturing process and winding laying process, greatly simplifying the processing process of the stator, thereby improving the production efficiency of the stator to a certain extent. At the same time, the iron core is eliminated, reducing the production cost of the stator.

[0056] The structures of the first conductor 1211 and the second conductor 1212 are the same. In a specific embodiment of this solution, both the first conductor 1211 and the second conductor 1212 include an inner end conductor 12111, a working conductor 12112, and an outer end conductor 12113, and extend from the middle of the PCB winding 12 towards the end.

[0057] Specifically, the number of the inner end conductors 12111, the working conductors 12112, and the outer end conductors 12113 is N.

[0058] As Figures 1-6 shown, the outer end conductor 12113 of the first conductor 1211 is connected to the outer end conductor 12113 of the second conductor 1212 through a first connection via, and the inner end conductor 12111 of the first conductor 1211 is connected to the inner end conductor 12111 of the second conductor 1212 through a second connection via.

[0059] As Figures 1-6 shown, the inner end conductor 12111 and the outer end are arranged obliquely with respect to the working conductor 12112 and are located on one side of the working conductor 12112. The setting directions of the inner end conductor 12111 and the outer end conductor 12113 of the first conductor 1211 are opposite to the setting directions of the inner end conductor 12111 and the outer end conductor 12113 of the second conductor 1212, and the inclination directions are opposite.

[0060] The working conductor 12112 is arranged along the radial direction of the PCB winding 12. Only the working conductor 12112 functions as the coil 121, and the inner end conductor 12111 and the outer end conductor 12113 function to connect the upper and lower layer working conductors 12112.

[0061] Preferably, both the first conductor 1211 and the second conductor 1212 are integrally formed conductors.

[0062] Adjacent two coils 121 are connected by an auxiliary conductor assembly 1213. In this solution, one of the adjacent two coils 121 is named the first coil 121, the coil 121 adjacent to the first coil 121 is the second coil 121, and the coil 121 adjacent to the second coil 121 is the third coil 121. Substantially, the structure of the third coil 121 is the same as that of the first coil 121. It is just for convenience of description that this coil 121 is named the third coil 121. The first coil 121 and the second coil 121 are spaced apart on the circumference of the PCB winding 12.

[0063] In a specific embodiment of this solution, the auxiliary conductor assembly 1213 includes a first auxiliary conductor 12131, a second auxiliary conductor 12132, a third auxiliary conductor 12133, and a fourth auxiliary conductor 12134.

[0064] As Figure 2 , 5 and as shown in 6.

[0065] The first auxiliary conductor 12131 is located at the lower layer of the resin plate. One end of the first auxiliary conductor 12131 is connected to one of the second conductors 1212 of the first coil 121 among two adjacent coils 121.

[0066] The second auxiliary conductor 12132 is located at the upper layer of the resin plate and arranged side by side with the first conductor 1211. One end of the second auxiliary conductor 12132 is connected to the other end of the first auxiliary conductor 12131. The other end of the second auxiliary conductor 12132 is connected to one of the second conductors 1212 of the second coil 121 among two adjacent coils 121. The position of the second conductor 1212 of the second coil 121 connected to the second auxiliary conductor 12132 is the same as the position of the second conductor 1212 of the first coil 121 connected to the first auxiliary conductor 12131.

[0067] The third auxiliary conductor 12133 is located at the lower layer of the resin plate. One end of the third auxiliary conductor 12133 is connected to one of the first conductors 1211 of the second coil 121.

[0068] The fourth auxiliary conductor 12134 is located at the upper layer of the resin plate. One end of the fourth auxiliary conductor 12134 is connected to the other end of the third auxiliary conductor 12133. The other end of the fourth auxiliary conductor 12134 is connected to one of the first conductors 1211 of the third coil 121 adjacent to the second coil 121. The position of the first conductor 1211 of the third coil 121 connected to the fourth auxiliary conductor 12134 is the same as the position of the first conductor 1211 of the second coil 121 connected to the third auxiliary conductor 12133.

[0069] In order to reduce the amount of material used, in this solution, the outer end conductors 12113 of the second conductor 1212 connected to the first auxiliary conductor 12131 and the first conductor 1211 connected to the fourth auxiliary conductor 12134 are omitted. The first auxiliary conductor 12131 is used to replace the outer end conductor 12113 of the second conductor 1212, and the fourth auxiliary conductor 12134 is used to replace the outer end conductor 12113 of the first conductor 1211. As Figures 2-6 shown, the lengths of the first auxiliary conductor 12131 and the fourth auxiliary conductor 12134 are shorter than the length of the outer end conductor 12113.

[0070] The second auxiliary conductor 12132 is arranged side by side with the outer end conductor 12113 of the second conductor 1212, and the third auxiliary conductor 12133 is arranged side by side with the outer end conductor 12113 of the first conductor 1211. As Figures 2-6As shown, the lengths of the second auxiliary conductor 12132 and the third auxiliary conductor 12133 are equal to the length of the outer end conductor 12113.

[0071] The first auxiliary conductor 12131 is connected to the second auxiliary conductor 12132 through a third connection via hole, and the third auxiliary conductor 12133 is connected to the fourth auxiliary conductor 12134 through a fourth connection via hole.

[0072] The auxiliary conductor assembly 1213 not only realizes the connection of adjacent coils 121, but also realizes the commutation of the current in adjacent coils 121.

[0073] In this solution, an input conductor 123 is provided on N first conductors 1211 arranged side by side and / or N second conductors 1212 arranged side by side. Specifically, the input conductor 123 can be connected only to N first conductors 1211 arranged side by side, or only to N second conductors 1212 arranged side by side, or can be connected to both N first conductors 1211 and N second conductors 1212 arranged side by side after being connected to each other.

[0074] In this solution, a tail-end conductor 122 is provided on N first conductors 1211 arranged side by side and / or N second conductors 1212 arranged side by side. Specifically, the tail-end conductor 122 can be connected only to N first conductors 1211 arranged side by side, or only to N second conductors 1212 arranged side by side, or can be connected to both N first conductors 1211 and N second conductors 1212 arranged side by side after being connected to each other.

[0075] It should be noted here that the input conductor 123 and the tail-end conductor 122 do not overlap and need to be provided on different first conductors 1211 and / or second conductors 1212.

[0076] As Figures 1-6 shown, the input conductor 123 and the tail-end conductor 122 are respectively connected to adjacent first conductors 1211 and / or second conductors 1212.

[0077] When specifically connecting, the tail-end conductors 122 of adjacent PCB windings 12 can be connected in sequence to realize the parallel connection of adjacent PCB windings 12, or the tail-end conductor 122 of the upper-layer PCB winding 12 can be connected to the input conductor 123 of the lower-layer PCB winding 12 to realize the series connection of adjacent PCB windings 12.

[0078] Among them, the series connection method of adjacent PCB windings 12 is only applicable to three-phase motors, and the parallel connection method of adjacent PCB windings 12 has stronger versatility.

[0079] In order to reduce the eddy current of the first conductor 1211 and the second conductor 1212, in a specific embodiment of this solution, hollow grooves are provided on the first conductor 1211 and the second conductor 1212.

[0080] As Figures 1-6 shown, the hollow grooves are provided along the length extension direction of the first conductor 1211 and the second conductor 1212.

[0081] Preferably, both the first conductor 1211 and the second conductor 1212 are copper conductors.

[0082] This solution also discloses a disc motor, including a stator, and the stator is the stator described in any one of the above solutions.

[0083] Since the stator has the above technical effects, the disc motor having this stator also has the same technical effects, which will not be elaborated here.

[0084] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stator, applicable to a disc motor, characterized in that, Comprising at least one PCB winding assembly (1), the PCB winding assemblies (1) are arranged in a stacked manner. The PCB winding assembly (1) includes an insulating board (11) and a plurality of PCB windings (12) printed on the insulating board (11). The number of the PCB windings (12) is equal to the number of phases of the disc motor. The plurality of PCB windings (12) are arranged in a stacked manner and adjacent PCB windings (12) are connected in sequence. An input conductor (123) and a tail-end conductor (122) are provided on the PCB winding (12). The PCB winding (12) includes a plurality of coils (121). The number of the coils (121) is equal to the number of poles of the disc motor. The coil (121) includes N first conductors (1211) arranged side by side on the upper layer of the insulating board (11) and N second conductors (1212) arranged side by side on the lower layer of the insulating board (11). The first conductor (1211) and the second conductor (1212) are arranged radially. The outer end of the first conductor (1211) is connected to the outer end of the second conductor (1212). The inner end of the first conductor (1211) is connected to the inner end of the second conductor (1212). One of the first conductors (1211) of one of the adjacent two coils (121) is connected to the first conductor (1211) in the same position of the other coil (121). One of the second conductors (1212) of one of the adjacent two coils (121) is connected to the second conductor (1212) in the same position of the other coil (121). Wherein N is the number of turns and N is a positive integer; Adjacent two coils (121) are connected by an auxiliary conductor assembly (1213). The auxiliary conductor assembly (1213) is used to realize the commutation of the current in the adjacent coils (121).

2. The stator according to claim 1, characterized in that, Both the first conductor (1211) and the second conductor (1212) include an inner-end conductor (12111), a working conductor (12112), and an outer-end conductor (12113) arranged in sequence from the middle to the end of the PCB winding (12). The inner-end conductor (12111) of the first conductor (1211) is connected to the inner-end conductor (12111) of the corresponding second conductor (1212). The outer-end conductor (12113) of the first conductor (1211) is connected to the outer-end conductor (12113) of the corresponding second conductor (1212).

3. The stator according to claim 1, wherein The auxiliary conductor assembly (1213) includes: A first auxiliary conductor (12131), located on the lower layer of the insulating board (11). The first end of the first auxiliary conductor (12131) is connected to one of the second conductors (1212) of the first coil (121) among the adjacent two coils (121); The second auxiliary conductor (12132) is located on the upper layer of the insulating board (11) and arranged side by side with the first conductor (1211). The first end of the second auxiliary conductor (12132) is connected to the second end of the first auxiliary conductor (12131). The second end of the second auxiliary conductor (12132) is connected to one of the second conductors (1212) of the second coil (121) among two adjacent coils (121). The position of the second conductor (1212) of the second coil (121) connected to the second auxiliary conductor (12132) is the same as the position of the second conductor (1212) of the first coil (121) connected to the first auxiliary conductor (12131). The third auxiliary conductor (12133) is located on the lower layer of the insulating board (11). The first end of the third auxiliary conductor (12133) is connected to one of the first conductors (1211) of the second coil (121). The fourth auxiliary conductor (12134) is located on the upper layer of the insulating board (11). The first end of the fourth auxiliary conductor (12134) is connected to the second end of the third auxiliary conductor (12133). The second end of the fourth auxiliary conductor (12134) is connected to one of the first conductors (1211) of the third coil (121) adjacent to the second coil (121). The position of the first conductor (1211) of the third coil (121) connected to the fourth auxiliary conductor (12134) is the same as the position of the first conductor (1211) of the second coil (121) connected to the third auxiliary conductor (12133).

4. The stator according to claim 1, characterized in that The input conductor (123) is provided on N first conductors (1211) arranged side by side and / or N second conductors (1212) arranged side by side.

5. The stator according to claim 1, wherein The tail-end conductor (122) is provided on N first conductors (1211) arranged side by side and / or N second conductors (1212) arranged side by side.

6. The stator according to claim 1, characterized in that The tail-end conductors (122) of adjacent PCB windings (12) are connected in sequence.

7. The stator according to claim 1, characterized in that, The tail-end conductor (122) of the PCB winding (12) located on the upper layer is connected to the input conductor (123) of the PCB winding (12) located on the lower layer.

8. The stator according to claim 2, wherein, A hollow groove is formed in the working conductor (12112).

9. The stator according to claim 1, wherein The first conductor (1211) and the second conductor (1212) are copper conductors.

10. A disc motor, comprising a stator, characterized in that, The stator is the stator according to any one of claims 1-9.

Images