Stator and axial flux motor

Abstract

The utility model discloses a stator and an axial flux motor, the stator comprises a stator iron core, coils and a circuit board, the stator iron core comprises a plurality of annularly arranged iron core blocks, the plurality of iron core blocks comprise a first iron core block, a second iron core block and a third iron core block, the first iron core block, the second iron core block and the third iron core block are wound with the coils respectively, and the coils are wound with the circuit board. The coils are connected to the circuit board, the coils wound around the first iron core blocks are connected through the circuit board to form a first phase winding, the coils wound around the second iron core blocks are connected through the circuit board to form a second phase winding, and the coils wound around the third iron core blocks are connected through the circuit board to form a third phase winding. According to the technical scheme, through the effect of the circuit board, the number of the connector lugs of the corresponding phase winding can be reduced, the complexity of wiring and wiring is reduced, the efficiency of wiring and wiring is improved, the error probability is reduced, the overall structure of the product is simpler, and production and application are better facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, in particular to a stator and an axial flux motor. BACKGROUND

[0002] Electric machines can be divided into radial flux motors and axial flux motors, and the axial flux motor is widely concerned due to its compact structure, large torque density and short axial length, and is particularly suitable for occasions where the axial size is limited.

[0003] In the related art, each core of the stator of the axial flux motor needs to be wound into a coil individually, each coil is connected to form a phase winding, and three phase windings are needed for a three-phase motor, which results in a large number of connection heads, the connection heads need to be fixed, the overall connection and wiring are complex, and production and application are inconvenient. UTILITY MODEL CONTENT

[0004] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application provides a stator.

[0005] To achieve the above-mentioned purpose, the present application discloses a stator, which comprises:

[0006] A stator core comprising a plurality of core blocks arranged in a ring shape, the plurality of core blocks comprising a first core block, a second core block and a third core block;

[0007] A coil, the first core block, the second core block and the third core block being wound with the coil; and

[0008] A circuit board, the coil being connected to the circuit board, and the coil wound on each first core block being connected through the circuit board to form a first phase winding, the coil wound on each second core block being connected through the circuit board to form a second phase winding, and the coil wound on each third core block being connected through the circuit board to form a third phase winding.

[0009] In some embodiments of the present application, the circuit board comprises a first connection part, the number of the first connection parts corresponds to the number of the first core blocks one-to-one, the coil wound on the first core block and the first connection part are connected one-to-one, and each first connection part is connected.

[0010] The circuit board comprises a second connection part, the number of the second connection parts corresponds to the number of the second core blocks one-to-one, the coil wound on the second core block and the second connection part are connected one-to-one, and each second connection part is connected.

[0011] The circuit board includes a third wiring section, the number of which corresponds one-to-one with the number of the third iron core blocks. The coil wound around the third iron core blocks is connected to the third wiring section in a one-to-one correspondence, and each of the third wiring sections is connected to the other.

[0012] In some embodiments of this application, the coil includes a first connection terminal and a second connection terminal;

[0013] The first wiring section includes a first wiring position and a second wiring position that are disconnected from each other. The first connecting end of the coil wound around the first iron core block is connected to the first wiring position, and the second connecting end of the coil wound around the first iron core block is connected to the second wiring position.

[0014] The second wiring section includes a third wiring position and a fourth wiring position that are disconnected from each other. The first connecting end of the coil wound around the second iron core block is connected to the third wiring position, and the second connecting end of the coil wound around the second iron core block is connected to the fourth wiring position.

[0015] The third wiring section includes a fifth and a sixth terminal that are disconnected from each other. The first connection end of the coil wound around the third iron core block is connected to the fifth terminal, and the second connection end of the coil wound around the third iron core block is connected to the sixth terminal.

[0016] In some embodiments of this application, the first and second terminals of each of the first terminals are arranged sequentially along a first direction, the third and fourth terminals of each of the second terminals are arranged sequentially along a first direction, and the fifth and sixth terminals of each of the third terminals are arranged sequentially along a first direction.

[0017] In some embodiments of this application, the winding direction of the coil wound around the first iron core block, the winding direction of the coil wound around the second iron core block, and the winding direction of the coil wound around the third iron core block are the same.

[0018] In some embodiments of this application, the first terminal block, the second terminal block, the third terminal block, the fourth terminal block, the fifth terminal block, and the sixth terminal block constitute a hole structure.

[0019] In some embodiments of this application, each of the first wiring terminals is connected via printed circuits on the circuit board, each of the second wiring terminals is connected via printed circuits on the circuit board, and each of the third wiring terminals is connected via printed circuits on the circuit board.

[0020] In some embodiments of this application, the first wiring portion is located in the radial direction of the first iron core block, the second wiring portion is located in the radial direction of the second iron core block, and the third wiring portion is located in the radial direction of the third iron core block.

[0021] In some embodiments of this application, the stator further includes a first connecting line and a second connecting line, the first connecting line being connected to the circuit board to form the input terminal of the first phase winding, and the second connecting line being connected to the circuit board to form the output terminal of the first phase winding.

[0022] The stator further includes a third connecting line and a fourth connecting line. The third connecting line is connected to the circuit board to form the input terminal of the second phase winding, and the fourth connecting line is connected to the circuit board to form the output terminal of the second phase winding.

[0023] The stator also includes a fifth connecting line and a sixth connecting line. The fifth connecting line is connected to the circuit board to form the input terminal of the third phase winding, and the sixth connecting line is connected to the circuit board to form the output terminal of the third phase winding.

[0024] In some embodiments of this application, the circuit board is annular and surrounds the central axis of the stator core.

[0025] In some embodiments of this application, the stator core and the circuit board are injection molded and fixed.

[0026] In some embodiments of this application, the number of the first iron core block is at least two, the number of the second iron core block is at least two, and the number of the third iron core block is at least two.

[0027] In some embodiments of this application, the coil and the circuit board are soldered together.

[0028] In some embodiments of this application, the stator core surrounds the circuit board;

[0029] Alternatively, the circuit board may surround the stator core.

[0030] In some embodiments of this application, multiple core blocks are connected to form an integral structure.

[0031] In some embodiments of this application, two adjacent iron core blocks are connected on one axial side or on both axial sides.

[0032] In some embodiments of this application, multiple core blocks are arranged alternately.

[0033] The second aspect of this application discloses an axial flux motor, which includes the stator described above.

[0034] In the technical solution of this application, the first iron core block, the second iron core block, and the third iron core block are all wound with coils. The coils of the first iron core block, the second iron core block, and the third iron core block all need to be connected to the circuit board to form the first phase winding, the second phase winding, and the third phase winding. Through the function of the circuit board, the number of terminals of the corresponding phase windings can be reduced, which helps to reduce the complexity of wiring and the overall structure of the product is simpler and more conducive to production and application.

[0035] Other advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of this application. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other designs can be obtained based on the structures shown in these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of an axial flux motor in some embodiments;

[0038] Figure 2 An exploded view of the axial flux motor in some embodiments;

[0039] Figure 3 Schematic diagram of the rotor in some embodiments;

[0040] Figure 4 This is a schematic diagram of the stator in some embodiments;

[0041] Figure 5 This is a schematic diagram of the coil wound around the iron core block in some embodiments;

[0042] Figure 6 These are schematic diagrams of the circuit boards in some embodiments;

[0043] Figure 7 This is a schematic diagram of the first wiring section of the circuit board in some embodiments (the second and third wiring sections are omitted);

[0044] Figure 8 This is a schematic diagram of the second wiring section of the circuit board in some embodiments (the first and third wiring sections are omitted);

[0045] Figure 9 This is a schematic diagram of the third wiring section of the circuit board in some embodiments (the first and second wiring sections are omitted);

[0046] Figure 10 This is a schematic diagram of the three-phase winding in some embodiments;

[0047] Figure 11 This is a schematic diagram showing the alternating arrangement of multiple iron core blocks in some embodiments;

[0048] Figure 12 This is a schematic diagram of the circuit board surrounding the stator core in some embodiments;

[0049] Figure 13 This is a schematic diagram showing the connection of two adjacent iron core blocks on one side along the axial direction in some embodiments;

[0050] Figure 14 This is a schematic diagram showing the axial connection between two adjacent iron core blocks in some embodiments.

[0051] Explanation of icon numbers:

[0052] Stator 1000, stator core 1100, core block 1110, first core block 1111, second core block 1112, third core block 1113, coil 1200, first connecting end 1210, second connecting end 1220, circuit board 1300, first wiring part 1310, first wiring position 1311, second wiring position 1312, second wiring part 1320, third wiring position 1321, fourth wiring position 1322, third wiring part 1330, fifth wiring position 1331, sixth wiring position 1332, first connecting wire 1410, second connecting wire 1420, third connecting wire 1430, fourth connecting wire 1440, fifth connecting wire 1450, sixth connecting wire 1460, rotor 2000, magnet 2100, support plate 2200, axial flux motor 3000.

[0053] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0055] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0056] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0057] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0058] The first aspect of this application discloses a stator 1000, combined with... Figures 1 to 4 As shown, in some embodiments, the stator 1000 includes a stator core 1100, a coil 1200, and a circuit board 1300. The stator core 1100 includes a plurality of core blocks 1110, which are arranged in a ring. Each core block 1110 includes a first core block 1111, a second core block 1112, and a third core block 1113. The first core block 1111 is wound with the coil 1200, the second core block 1112 is wound with the coil 1200, and the third core block 1113 is wound with the coil 1200. The three iron core blocks 1113 are also wound with coils 1200. The coils 1200 are connected to the circuit board 1300. The coils 1200 wound on each of the first iron core blocks 1111 are connected through the circuit board 1300 to form the first phase winding. The coils 1200 wound on each of the second iron core blocks 1112 are connected through the circuit board 1300 to form the second phase winding. The coils 1200 wound on each of the third iron core blocks 1113 are connected through the circuit board 1300 to form the third phase winding.

[0059] The first iron core block 1111, the second iron core block 1112, and the third iron core block 1113 are all wound with coils 1200. The coils 1200 of the first iron core block 1111, the second iron core block 1112, and the third iron core block 1113 all need to be connected to the circuit board 1300 to form the first phase winding, the second phase winding, and the third phase winding. Through the function of the circuit board 1300, the number of terminals of the corresponding phase windings can be reduced, which helps to reduce the complexity of wiring and the overall structure of the product is simpler and more conducive to production and application.

[0060] The following description uses an axial flux motor 3000 to further illustrate the stator 1000. The axial flux motor 3000 includes a stator 1000 and a rotor 2000. The rotor 2000 is located axially along the stator 1000, or the stator 1000 can be understood as located axially along the rotor 2000. The rotor 2000 is the part of the axial flux motor 3000 that rotates during operation, while the stator 1000 is the part that remains stationary during operation. Axial flux motors 3000 come in various types, including dual-rotor single-stator, single-rotor dual-stator, and single-rotor single-stator configurations. Multi-rotor multi-stator configurations also exist. The axial flux motor 3000 shown in the attached diagram is a dual-rotor single-stator configuration.

[0061] The rotor 2000 includes a magnet 2100. Generally, the rotor 2000 also includes a support disk 2200. The magnet 2100 is fixed on the support disk 2200. There are various ways to fix the magnet 2100 on the support disk 2200, such as by bonding, integral molding or other methods. The magnet 2100 can be made of various materials, such as rare earth permanent magnet materials, ferrite permanent magnet materials or other composite materials. In this embodiment, there are multiple magnets, which means two or more. The multiple magnets 2100 are arranged in a ring and alternately. The number of magnets 2100 on a single rotor 2000 in the attached figure is eighteen.

[0062] The stator 1000 includes a stator core 1100, which in turn includes core blocks 1110. There are multiple core blocks 1110, meaning two or more. These core blocks 1110 are arranged in a ring, and each core block 1110 is wound with a coil 1200. It can be understood that the core blocks 1110 have teeth, and the coil 1200 is wound around these teeth. In other words, the number of core blocks 1110 in the stator core 1100 is equal to the number of teeth in the stator core 1100. That is, when the number of teeth in the stator core 1100 is N, the corresponding number of core blocks 1110 is N. The multiple iron core blocks 1110 include a first iron core block 1111, a second iron core block 1112, and a third iron core block 1113. This should be understood as follows: among the multiple iron core blocks 1110, a portion of the iron core blocks 1110 are defined as the first iron core block 1111, a portion as the second iron core block 1112, and a portion as the third iron core block 1113. The first iron core block 1111, the second iron core block 1112, and the third iron core block 1113 are each wound with a coil 1200. The attached diagram shows eighteen iron core blocks 1110 arranged in a ring. These eighteen iron core blocks 1110 include six first iron core blocks 1111 (A1~A6), six second iron core blocks 1112 (B1~B6), and six third iron core blocks 1113 (C1~C6).

[0063] The coils 1200 wound around the iron core blocks 1110 need to be connected to the circuit board 1300 (PCB). Specifically, the coils 1200 wound around each of the first iron core blocks 1111 need to be connected to the circuit board 1300 respectively, so that the coils 1200 wound around each of the first iron core blocks 1111 are connected through the circuit board 1300 to form the first phase winding (U phase). The coils 1200 wound around each of the second iron core blocks 1112 need to be connected to the circuit board 1300 respectively, so that the coils 1200 wound around each of the second iron core blocks 1112 are connected through the circuit board 1300 to form the second phase winding (V phase). The coils 1200 wound around each of the third iron core blocks 1113 need to be connected to the circuit board 1300 respectively, so that the coils 1200 wound around each of the third iron core blocks 1113 are connected through the circuit board 1300 to form the third phase winding (W phase). This can greatly reduce the formation of wiring joints and reduce the complexity of wiring.

[0064] For example, taking an example where there are eighteen iron core blocks 1110, including six first iron core blocks 1111, six second iron core blocks 1112, and six third iron core blocks 1113, the following explanation will be provided (refer to this application). Figure 4If the wiring method in the relevant technology is adopted, six first iron core blocks 1111 are each wound with coils 1200. Direct wiring between coils 1200 will form terminals. The coils 1200 wound on the six first iron core blocks 1111 are connected to form the first phase winding, generating a total of five terminals. Similarly, the coils 1200 wound on the six second iron core blocks 1112 are connected to form the second phase winding, generating a total of five terminals. The coils 1200 wound on the six third iron core blocks 1113 are connected to form the third phase winding, generating a total of five terminals. The formation of the three phase windings generates at least fifteen terminals, which need to be fixedly arranged, making the overall wiring relatively complex and messy.

[0065] In this embodiment, by setting a circuit board 1300 to replace the wiring method in the related technology, the coils 1200 wound around the six first iron core blocks 1111 are connected to the circuit board 1300, the coils 1200 wound around the six second iron core blocks 1112 are connected to the circuit board 1300, and the coils 1200 wound around the six third iron core blocks 1113 are connected to the circuit board 1300. Compared with the related technology, fifteen wiring heads can be reduced. By fixing the circuit board 1300, the connection ends of each coil 1200 can be fixed, which is more convenient and faster. It is beneficial to reduce the complexity of the overall wiring and the overall product is simpler, which is more conducive to production and application.

[0066] Combination Figures 4 to 6 As shown, the circuit board 1300 includes a first wiring portion 1310. The number of first wiring portions 1310 corresponds one-to-one with the number of first iron core blocks 1111. The coil 1200 wound around the first iron core block 1111 is connected to the first wiring portion 1310 in a one-to-one correspondence. All the first wiring portions 1310 are connected to each other. That is, when the number of first iron core blocks 1111 is N, the number of first wiring portions 1310 is also N, and the number of coils 1200 used to wind around the first iron core block 1111 is also N. The attached diagram shows six first iron core blocks 1111 (A1 to A6), each with one coil 1200 wound around it, for a total of six coils 1200. There are also six first connection parts 1310. The six coils 1200 wound around the six first iron core blocks 1111 and the six first connection parts 1310 are connected one-to-one. Since the first connection parts 1310 are connected, the six coils 1200 wound around the six first iron core blocks 1111 are connected to form the first phase winding (U phase). The one-to-one correspondence between the number of first connection parts 1310 and the number of first iron core blocks 1111 makes it easier for the coils 1200 wound around the first iron core blocks 1111 to be connected to form the first phase winding through the circuit board 1300.

[0067] Similarly, continue to combine Figures 4 to 6As shown, the circuit board 1300 includes a second wiring portion 1320. The number of second wiring portions 1320 corresponds one-to-one with the number of second iron core blocks 1112. The coil 1200 wound around the second iron core block 1112 is connected to the second wiring portion 1320 in a one-to-one correspondence. All the second wiring portions 1320 are connected to each other. That is, when the number of second iron core blocks 1112 is N, the number of second wiring portions 1320 is also N, and the number of coils 1200 used for winding around the second iron core block 1112 is also N. The attached diagram shows six second iron core blocks 1112 (B1 to B6), each with a coil 1200 wound around it, for a total of six coils 1200. There are also six second connection parts 1320. The six coils 1200 wound around the six second iron core blocks 1112 and the six second connection parts 1320 are connected one-to-one. Since the connection of each second connection part 1320, the six coils 1200 wound around the six second iron core blocks 1112 are made conductive to form the second phase winding (V phase). The one-to-one correspondence between the number of second connection parts 1320 and the number of second iron core blocks 1112 makes it easier for the coils 1200 wound around the second iron core blocks 1112 to be connected to form the second phase winding through the circuit board 1300.

[0068] Continue to combine Figures 4 to 6 As shown, the circuit board 1300 includes a third wiring section 1330. The number of third wiring sections 1330 corresponds one-to-one with the number of third iron core blocks 1113. The coil 1200 wound around the third iron core block 1113 is connected to the third wiring section 1330 in a one-to-one correspondence. All the third wiring sections 1330 are connected to each other. That is, when the number of third iron core blocks 1113 is N, the number of third wiring sections 1330 is also N, and the number of coils 1200 used to wind around the third iron core block 1113 is also N. The attached diagram shows six third core blocks 1113 (C1 to C6), each with a coil 1200 wound around it, for a total of six coils 1200. There are also six third connection parts 1330. The six coils 1200 wound around the six third core blocks 1113 and the six third connection parts 1330 are connected one-to-one. Since the three connection parts 1330 are connected, the six coils 1200 wound around the six third core blocks 1113 are connected to form the third phase winding (W phase). The one-to-one correspondence between the number of third connection parts 1330 and the number of third core blocks 1113 makes it easier for the coils 1200 wound around the third core blocks 1113 to be connected to form the third phase winding through the circuit board 1300.

[0069] Understandably, during the production process, each iron core block 1110 is wound with a coil 1200. Therefore, after the coil 1200 is wound onto the iron core block 1110, the two ends of the coil 1200 are respectively formed with a first connection end 1210 and a second connection end 1220. Both the first connection end 1210 and the second connection end 1220 need to be connected to the circuit board 1300.

[0070] Combination Figure 4 , Figure 6 and Figure 7 As shown, in some embodiments, the first wiring portion 1310 includes a first wiring point 1311 and a second wiring point 1312. The first wiring point 1311 and the second wiring point 1312 are disconnected. The first connection end 1210 of the coil 1200 wound around the first iron core block 1111 is connected to the first wiring point 1311, and the second connection end 1220 of the coil 1200 wound around the first iron core block 1111 is connected to the second wiring point 1312. In this way, the coil 1200 wound around the first iron core block 1111 can be connected to the circuit board 1300.

[0071] It is understandable that, since each of the first wiring portions 1310 needs to be connected, and since each first wiring portion 1310 includes a first wiring point 1311 and a second wiring point 1312, the first wiring point 1311 of one of the two connected first wiring portions 1310 is connected to the first wiring point 1311 of the other, or the first wiring point 1311 of one of the two connected first wiring portions 1310 is connected to the second wiring point 1312 of the other, or the second wiring point 1312 of one of the two connected first wiring portions 1310 is connected to the second wiring point 1312 of the other. The specific connection scheme can be selected according to the design requirements of the magnetic field. This embodiment does not limit it one by one. Specific examples can be found below.

[0072] Similarly, combining Figure 4 , Figure 6 and Figure 8 In some embodiments, the second wiring portion 1320 includes a third wiring point 1321 and a fourth wiring point 1322. The third wiring point 1321 and the fourth wiring point 1322 are disconnected. The first connection end 1210 of the coil 1200 wound around the second iron core block 1112 is connected to the third wiring point 1321, and the second connection end 1220 of the coil 1200 wound around the second iron core block 1112 is connected to the fourth wiring point 1322. In this way, the coil 1200 wound around the second iron core block 1112 can be connected to the circuit board 1300.

[0073] Since the various second wiring portions 1320 need to be connected, and since the second wiring portion 1320 includes a third wiring position 1321 and a fourth wiring position 1322, the third wiring position 1321 of one of the two connected second wiring portions 1320 can be connected to the third wiring position 1321 of the other, or the third wiring position 1321 of one of the two connected second wiring portions 1320 can be connected to the fourth wiring position 1322 of the other, or the fourth wiring position 1322 of one of the two connected second wiring portions 1320 can be connected to the fourth wiring position 1322 of the other. The specific connection scheme can be selected according to the design requirements of the magnetic field, and this embodiment does not limit them one by one.

[0074] Combination Figure 4 , Figure 6 and Figure 9 As shown, in some embodiments, the third wiring section 1330 includes a fifth wiring position 1331 and a sixth wiring position 1332, which are disconnected. The first connection end 1210 of the coil 1200 wound around the third iron core block 1113 is connected to the fifth wiring position 1331, and the second connection end 1220 of the coil 1200 wound around the third iron core block 1113 is connected to the sixth wiring position 1332. In this way, the coil 1200 wound around the third iron core block 1113 can be connected to the circuit board 1300.

[0075] Since the various third wiring sections 1330 need to be connected, and since the third wiring section 1330 includes a fifth wiring position 1331 and a sixth wiring position 1332, the fifth wiring position 1331 of one of the two connected third wiring sections 1330 can be connected to the fifth wiring position 1331 of the other, or the fifth wiring position 1331 of one of the two connected third wiring sections 1330 can be connected to the sixth wiring position 1332 of the other, or the sixth wiring position 1332 of one of the two connected third wiring sections 1330 can be connected to the sixth wiring position 1332 of the other. The specific connection scheme can be selected according to the design requirements of the magnetic field, and this embodiment does not limit it one by one.

[0076] Combination Figures 4 to 9 As shown, in some embodiments, the first terminals 1311 of each first terminal 1310 are arranged sequentially at the second terminals 1312 along a first direction; the third terminals 1321 of each second terminal 1320 are arranged sequentially at the fourth terminals 1322 along a first direction; and the fifth terminals 1331 and the sixth terminals 1332 of each third terminal 1330 are arranged sequentially along a first direction, for example, facing each other. Figure 4The clockwise orientation facilitates the manufacturing of the circuit board 1300 and makes it easier to distinguish the relative positions of the first terminal 1311 and the second terminal 1312 of the first terminal part 1310, the relative positions of the third terminal 1321 and the fourth terminal 1322 of the second terminal part 1320, and the relative positions of the fifth terminal 1331 and the sixth terminal 1332 of the third terminal part 1330, thus facilitating the connection between the coil 1200 and the circuit board 1300.

[0077] Furthermore, the winding direction of the coil 1200 wound on the first iron core block 1111, the winding direction of the coil 1200 wound on the second iron core block 1112, and the winding direction of the coil 1200 wound on the third iron core block 1113 are the same. For example, the winding direction of the coils 1200 on the first iron core block 1111, the second iron core block 1112, and the third iron core block 1113 is either counterclockwise or clockwise, which makes it easier for the iron core block 1110 to wind the coils 1200, thereby improving production efficiency. Taking the first phase winding as an example, the second phase winding and the third phase winding are similar and will not be repeated. In the first phase winding, the current direction of the first iron core block 1111 at some different positions is different. Under the premise that the winding direction of the coil 1200 of each first iron core block 1111 is the same, the current can be reversed by connecting the first terminal 1310 on the circuit board 1300.

[0078] For example, combining Figures 4 to 10 As shown, taking the first phase winding as an example, the second and third phase windings are similar and will not be repeated. Figure 1 The stator 1000 includes six first iron core blocks 1111 (A1 to A6), each first iron core block 1111 is wound with a coil 1200, and the circuit board 1300 has six first wiring portions 1310 (D1 to D6), each first wiring portion 1310 has a first wiring position 1311 and a second wiring position 1312.

[0079] The first connection end 1210 of the coil 1200 on the first iron core block 1111 (A1) is connected to the first terminal 1311 of the first terminal part 1310 (D1), and the second connection end 1220 of the coil 1200 on the first iron core block 1111 (A1) is connected to the second terminal 1312 of the first terminal part 1310 (D1).

[0080] The first connection terminal 1210 of the coil 1200 on the first iron core block 1111 (A2) is connected to the first terminal 1311 of the first terminal block 1310 (D2), and the second connection terminal 1220 of the coil 1200 on the first iron core block 1111 (A2) is connected to the second terminal 1312 of the first terminal block 1310 (D2).

[0081] The first connection end 1210 of the coil 1200 on the first iron core block 1111 (A3) is connected to the first terminal 1311 of the first terminal part 1310 (D3), and the second connection end 1220 of the coil 1200 on the first iron core block 1111 (A3) is connected to the second terminal 1312 of the first terminal part 1310 (D3).

[0082] The first connection terminal 1210 of the coil 1200 on the first iron core block 1111 (A4) is connected to the first terminal 1311 of the first terminal part 1310 (D4), and the second connection terminal 1220 of the coil 1200 on the first iron core block 1111 (A4) is connected to the second terminal 1312 of the first terminal part 1310 (D4).

[0083] The first connection end 1210 of the coil 1200 on the first iron core block 1111 (A5) is connected to the first terminal 1311 of the first terminal part 1310 (D5), and the second connection end 1220 of the coil 1200 on the first iron core block 1111 (A5) is connected to the second terminal 1312 of the first terminal part 1310 (D5).

[0084] The first connection end 1210 of the coil 1200 on the first iron core block 1111 (A6) is connected to the first terminal 1311 of the first terminal part 1310 (D6), and the second connection end 1220 of the coil 1200 on the first iron core block 1111 (A6) is connected to the second terminal 1312 of the first terminal part 1310 (D6).

[0085] The first terminal 1311 of the first wiring section 1310(D1) constitutes the start end of the U phase. The second terminal 1312 of the first wiring section 1310(D1) is connected to the second terminal 1312 of the first wiring section 1310(D2). The first terminal 1311 of the first wiring section 1310(D2) is connected to the first terminal 1311 of the first wiring section 1310(D3). The second terminal 1312 of the first wiring section 1310(D3) is connected to the first terminal 1311 of the first wiring section 1310(D4). The second terminal 1312 of the first wiring section 1310(D4) is connected to the second terminal 1312 of the first wiring section 1310(D5). The first terminal 1311 of the first wiring section 1310(D5) is connected to the first terminal 1311 of the first wiring section 1310(D6). The second terminal 1312 of the first wiring section 1310(D6) constitutes the end end of the U phase. This makes the coil 1200 wound around the iron core block 1110 (A2, A5) have the effect of anti-winding (the current direction is opposite to that of the iron core block 1110 (A1, A3, A4, A6)).

[0086] CombinationFigure 6 As shown, in some embodiments, the first terminal 1311, the second terminal 1312, the third terminal 1321, the fourth terminal 1322, the fifth terminal 1331 and the sixth terminal 1332 form a hole structure, making it easier for the first connection end 1210 and the second connection end 1220 of the coil 1200 to be connected and fixed with the hole structure.

[0087] Optionally, the coil 1200 is soldered to the circuit board 1300, which greatly simplifies the process compared to the traditional wiring process and improves the stability and reliability of the connection. For example, the first connecting end 1210 of the coil 1200 wound on the first iron core block 1111 is soldered to the first terminal 1311, the second connecting end 1220 of the coil 1200 wound on the first iron core block 1111 is soldered to the second terminal 1312, the first connecting end 1210 of the coil 1200 wound on the second iron core block 1112 is soldered to the third terminal 1321, the second connecting end 1220 of the coil 1200 wound on the second iron core block 1112 is soldered to the fourth terminal 1322, the first connecting end 1210 of the coil 1200 wound on the third iron core block 1113 is soldered to the fifth terminal 1331, and the second connecting end 1220 of the coil 1200 wound on the third iron core block 1113 is soldered to the sixth terminal 1332.

[0088] In some embodiments, each of the first wiring portions 1310 is connected by printed circuits on the circuit board 1300. That is, the circuit board 1300 forms printed circuits that can connect each of the first wiring portions 1310 during the manufacturing process. The printed circuits can be manufactured by processes such as exposure, development, and etching, and then laminated onto the substrate of the circuit board 1300 to form the circuit board 1300. The printed circuits, compared with the flying wire connection, can make the connection between the first wiring portions 1310 more stable and reliable. For example, the second terminal 1312 of the first terminal 1310(D1) and the second terminal 1312 of the first terminal 1310(D2) are connected by printed circuits; the first terminal 1311 of the first terminal 1310(D2) and the first terminal 1311 of the first terminal 1310(D3) are connected by printed circuits; the second terminal 1312 of the first terminal 1310(D3) and the first terminal 1311 of the first terminal 1310(D4) are connected by printed circuits; the second terminal 1312 of the first terminal 1310(D4) and the second terminal 1312 of the first terminal 1310(D5) are connected by printed circuits; and the first terminal 1311 of the first terminal 1310(D5) and the first terminal 1311 of the first terminal 1310(D6) are connected by printed circuits.

[0089] Similarly, each of the second wiring sections 1320 is connected through the printed circuits of the circuit board 1300, and each of the third wiring sections 1330 is connected through the printed circuits of the circuit board 1300.

[0090] Combination Figure 4 As shown, in some embodiments, the first wiring portion 1310 is located in the radial direction of the first iron core block 1111. This reduces the length of the first connecting end 1210 and the second connecting end 1220 of the coil 1200 wound around the first iron core block 1111, saving material. Furthermore, since the first wiring portion 1310 and the first iron core block 1111 correspond in the radial direction, connection operations are convenient. It is understood that the radial direction refers to the radial direction of the stator 1000, which is also the radial direction of the axial flux motor 3000. The first wiring portion 1310 being located in the radial direction of the first iron core block 1111 means that, when projected along the radial direction, at least a portion of the projection of the first wiring portion 1310 overlaps with the projection of the first iron core block 1111.

[0091] Similarly, the second wiring section 1320 is located in the radial direction of the second iron core block 1112, and the third wiring section 1330 is located in the radial direction of the third iron core block 1113.

[0092] Combination Figures 4 to 9 As shown, in some embodiments, the stator 1000 further includes a first connecting line 1410, a second connecting line 1420, a third connecting line 1430, a fourth connecting line 1440, a fifth connecting line 1450, and a sixth connecting line 1460. The first connecting line 1410 is connected to the circuit board 1300 to form the input terminal of the first phase winding, the second connecting line 1420 is connected to the circuit board 1300 to form the output terminal of the first phase winding, the third connecting line 1430 is connected to the circuit board 1300 to form the input terminal of the second phase winding, the fourth connecting line 1440 is connected to the circuit board 1300 to form the output terminal of the second phase winding, the fifth connecting line 1450 is connected to the circuit board 1300 to form the input terminal of the third phase winding, and the sixth connecting line 1460 is connected to the circuit board 1300 to form the output terminal of the third phase winding. By setting the first connecting line 1410, the third connecting line 1430, the fifth connecting line 1450, the second connecting line 1420, the fourth connecting line 1440 and the sixth connecting line 1460, it is convenient to make star connection or delta connection, so that the first phase winding, the second phase winding and the third phase winding are connected.

[0093] Combination Figure 2As shown, in some embodiments, the circuit board 1300 is annular and surrounds the central axis of the stator core 1100, which is the central axis of the axial flux motor 3000. As can be seen above, multiple core blocks 1110 are arranged in annular shape (that is, the stator core 1100 is annular). By designing the circuit board 1300 to also be annular and surround the central axis of the stator core 1100, it is more convenient to connect each core block 1110 and the circuit board 1300.

[0094] Optionally, combined Figure 2 and Figure 11 As shown, in some embodiments, the stator core 1100 surrounds the circuit board 1300. Since the multiple core blocks 1110 of the stator core 1100 are arranged in a ring, and are surrounded by the stator core 1100 through the circuit board 1300, the space enclosed by the stator core 1100 is fully utilized, reducing the space occupied and contributing to miniaturization design.

[0095] Optionally, combined Figure 12 As shown, in some embodiments, the circuit board 1300 surrounds the stator core 1100. Since the circuit board 1300 needs to connect with the first connecting line 1410, the second connecting line 1420, the third connecting line 1430, the fourth connecting line 1440, the fifth connecting line 1450, and the sixth connecting line 1460 are more easily led out by the circuit board 1300 surrounding the stator core 1100.

[0096] Optionally, in some embodiments, the stator core 1100 and the circuit board 1300 are injection molded. After the stator core 1100 is wound with the coil 1200 and the coil 1200 is connected to the circuit board 1300, the stator core 1100, the coil 1200, and the circuit board 1300 can be placed in a mold and plastic can be injected. After molding, the stator core 1100, the coil 1200, and the circuit board 1300 can be combined together, which is convenient and quick.

[0097] Combination Figure 11 and Figure 12 As shown, in some embodiments, multiple core blocks 1110 are arranged alternately, so that the stator core 1100 forms a distributed structure to meet the various types of stator 1000 designs.

[0098] Besides being a distributed structure, the 1100 stator core can also be an integrated structure, combining... Figure 13 and Figure 14As shown, in some embodiments, multiple iron core blocks 1110 are connected to form an integral structure. Here, "connected to form an integral structure" means that the multiple iron core blocks 1110 are combined into a single unit. For example, they can be integrally formed by cutting, winding, or molding, and other methods can also be used, which are not limited here. This further satisfies various design types of the stator 1000. Optionally, given that multiple iron core blocks 1110 are connected to form an integral structure, adjacent iron core blocks 1110 can be connected on one axial side or on both axial sides, thus forming an integral structure. Connecting two adjacent iron core blocks 1110 on one axial side means that two adjacent iron core blocks 1110 are connected on one axial side while the other axial side is open (e.g., ...). Figure 13 As shown), the axial connection between two adjacent iron core blocks 1110 means that the two adjacent iron core blocks 1110 are connected on one side of the axial direction and also connected on the other side of the axial direction (as shown). Figure 14 (As shown).

[0099] This application also discloses an axial flux motor 3000, combined with... Figures 1 to 14 As shown, the axial flux motor 3000 includes the aforementioned stator 1000. The stator 1000 includes a stator core 1100, a coil 1200, and a circuit board 1300. The stator core 1100 includes multiple core blocks 1110 arranged in a ring. Each core block 1110 includes a first core block 1111, a second core block 1112, and a third core block 1113. The first core block 1111 is wound with a coil 1200, and the second core block 1112 is wound with a coil. 1200, the third iron core block 1113 also has a coil 1200 wound around it. The coil 1200 is connected to the circuit board 1300. The coils 1200 wound around each of the first iron core blocks 1111 are connected through the circuit board 1300 to form the first phase winding. The coils 1200 wound around each of the second iron core blocks 1112 are connected through the circuit board 1300 to form the second phase winding. The coils 1200 wound around each of the third iron core blocks 1113 are connected through the circuit board 1300 to form the third phase winding. In this embodiment, the axial flux motor 3000 is a dual-rotor single-stator type.

[0100] The first iron core block 1111, the second iron core block 1112, and the third iron core block 1113 are each wound with a coil 1200. The coils 1200 of the first iron core block 1111, the second iron core block 1112, and the third iron core block 1113 all need to be connected to the circuit board 1300 to form the first phase winding, the second phase winding, and the third phase winding, respectively. Through the circuit board 1300, the number of terminals for the corresponding phase windings can be reduced, helping to reduce the complexity of wiring and making the overall product structure simpler, which is more conducive to production and application. It is understood that the stator 1000 of the axial flux motor 3000 in this embodiment adopts the technical solution of the above embodiment, and therefore has at least the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0101] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A stator (1000), characterized in that, include: The stator core (1100) includes a plurality of core blocks (1110) arranged in a ring, and the plurality of core blocks (1110) include a first core block (1111), a second core block (1112) and a third core block (1113); A coil (1200), wherein the first iron core block (1111), the second iron core block (1112), and the third iron core block (1113) are respectively wound with the coil (1200); and The circuit board (1300) is connected to the coil (1200), and the coil (1200) wound around each of the first iron core blocks (1111) is connected through the circuit board (1300) to form a first phase winding, the coil (1200) wound around each of the second iron core blocks (1112) is connected through the circuit board (1300) to form a second phase winding, and the coil (1200) wound around each of the third iron core blocks (1113) is connected through the circuit board (1300) to form a third phase winding.

2. The stator (1000) as described in claim 1, characterized in that, The circuit board (1300) includes a first wiring section (1310), the number of the first wiring sections (1310) corresponds one-to-one with the number of the first iron core blocks (1111), the coil (1200) wound around the first iron core block (1111) is connected to the first wiring section (1310) one-to-one, and each of the first wiring sections (1310) is connected to each other; The circuit board (1300) includes a second wiring section (1320), the number of the second wiring sections (1320) corresponds one-to-one with the number of the second iron core blocks (1112), the coil (1200) wound around the second iron core block (1112) is connected to the second wiring section (1320) one-to-one, and each of the second wiring sections (1320) is connected to each other; The circuit board (1300) includes a third wiring section (1330), the number of the third wiring sections (1330) corresponds one-to-one with the number of the third iron core blocks (1113), the coil (1200) wound around the third iron core block (1113) is connected to the third wiring section (1330) one-to-one, and each of the third wiring sections (1330) is connected to each other.

3. The stator (1000) as described in claim 2, characterized in that, The coil (1200) includes a first connecting terminal (1210) and a second connecting terminal (1220); The first wiring section (1310) includes a first wiring position (1311) and a second wiring position (1312) that are disconnected from each other. The first connecting end (1210) of the coil (1200) wound around the first iron core block (1111) is connected to the first wiring position (1311), and the second connecting end (1220) of the coil (1200) wound around the first iron core block (1111) is connected to the second wiring position (1312). The second wiring section (1320) includes a third wiring position (1321) and a fourth wiring position (1322) that are disconnected from each other. The first connecting end (1210) of the coil (1200) wound around the second iron core block (1112) is connected to the third wiring position (1321), and the second connecting end (1220) of the coil (1200) wound around the second iron core block (1112) is connected to the fourth wiring position (1322). The third wiring section (1330) includes a fifth wiring position (1331) and a sixth wiring position (1332) that are disconnected from each other. The first connecting end (1210) of the coil (1200) wound around the third iron core block (1113) is connected to the fifth wiring position (1331), and the second connecting end (1220) of the coil (1200) wound around the third iron core block (1113) is connected to the sixth wiring position (1332).

4. The stator (1000) as described in claim 3, characterized in that, The first terminal (1311) and the second terminal (1312) of each of the first terminals (1310) are arranged sequentially along the first direction, the third terminal (1321) and the fourth terminal (1322) of each of the second terminals (1320) are arranged sequentially along the first direction, and the fifth terminal (1331) and the sixth terminal (1332) of each of the third terminals (1330) are arranged sequentially along the first direction.

5. The stator (1000) as described in claim 3, characterized in that, The winding direction of the coil (1200) wound around the first iron core block (1111), the winding direction of the coil (1200) wound around the second iron core block (1112), and the winding direction of the coil (1200) wound around the third iron core block (1113) are the same.

6. The stator (1000) as described in claim 3, characterized in that, The first terminal (1311), the second terminal (1312), the third terminal (1321), the fourth terminal (1322), the fifth terminal (1331), and the sixth terminal (1332) constitute a hole structure.

7. The stator (1000) as described in claim 2, characterized in that, Each of the first wiring terminals (1310) is connected via the printed circuit of the circuit board (1300), each of the second wiring terminals (1320) is connected via the printed circuit of the circuit board (1300), and each of the third wiring terminals (1330) is connected via the printed circuit of the circuit board (1300).

8. The stator (1000) as described in claim 2, characterized in that, The first wiring portion (1310) is located in the radial direction of the first iron core block (1111), the second wiring portion (1320) is located in the radial direction of the second iron core block (1112), and the third wiring portion (1330) is located in the radial direction of the third iron core block (1113).

9. The stator (1000) as described in claim 1, characterized in that, The stator (1000) further includes a first connecting line (1410) and a second connecting line (1420). The first connecting line (1410) is connected to the circuit board (1300) to form the input terminal of the first phase winding, and the second connecting line (1420) is connected to the circuit board (1300) to form the output terminal of the first phase winding. The stator (1000) further includes a third connecting line (1430) and a fourth connecting line (1440). The third connecting line (1430) is connected to the circuit board (1300) to form the input terminal of the second phase winding, and the fourth connecting line (1440) is connected to the circuit board (1300) to form the output terminal of the second phase winding. The stator (1000) further includes a fifth connecting line (1450) and a sixth connecting line (1460). The fifth connecting line (1450) is connected to the circuit board (1300) to form the input terminal of the third phase winding, and the sixth connecting line (1460) is connected to the circuit board (1300) to form the output terminal of the third phase winding.

10. The stator (1000) as claimed in claim 1, characterized in that, The circuit board (1300) is annular and surrounds the central axis of the stator core (1100); And / or, the stator core (1100) and the circuit board (1300) are injection molded and fixed; And / or, the number of the first core block (1111) is at least two, the number of the second core block (1112) is at least two, and the number of the third core block (1113) is at least two; And / or, the coil (1200) and the circuit board (1300) are soldered together.

11. The stator (1000) as claimed in claim 1, characterized in that, The stator core (1100) surrounds the circuit board (1300); Alternatively, the circuit board (1300) surrounds the stator core (1100).

12. The stator (1000) as claimed in claim 1, characterized in that, Multiple core blocks (1110) are connected to form an integral structure.

13. The stator (1000) as described in claim 12, characterized in that, Two adjacent iron core blocks (1110) are connected on one side of the axial direction or on both sides of the axial direction.

14. The stator (1000) as claimed in claim 1, characterized in that, Multiple core blocks (1110) are arranged alternately.

15. An axial flux motor (3000), characterized in that, Includes the stator (1000) as described in any one of claims 1 to 14.

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