Stator structure of an axial magnetic flux motor

Abstract

This provides a stator structure for an axial magnetic flux motor. [Solution] A stator structure for an axial magnetic flux motor comprising a plurality of magnetic poles, a plurality of magnetic field operating regions including a plurality of layers arranged along the axial direction, and a plurality of conductors, wherein each conductor, after passing through the lowest layer, rises and passes through higher layers until it reaches the uppermost layer each time it crosses the magnetic field operating region of the next magnetic pole, so that the plurality of conductors are arranged in the same geometric arrangement in the plurality of magnetic field operating regions of the plurality of magnetic poles, or, after passing through the uppermost layer, descends and passes through lower layers until it reaches the lowest layer each time it crosses the magnetic field operating region of the next magnetic pole, so that the plurality of conductors are arranged in the same geometric arrangement in the plurality of magnetic field operating regions of the plurality of magnetic poles, and one secondary winding comprises the plurality of conductors connected in series.

Description

Technical Field

[0001] The present invention relates to a motor structure, and in particular to a stator structure of an axial flux motor.

Background Art

[0002] A motor is a component for converting electrical energy into mechanical energy, and has already been widely applied in daily life. Conventionally, distributed-winding axial motors have been employed, in which conductors are arranged meanderingly along circumferential slots in accordance with corresponding magnetic pole positions in stator slots. In order for the conductor arrangement to effectively fill the space within the slots and improve the slot filling rate, the two conductors in adjacent slots need to exchange their positions vertically in the axial direction at the protruding portion before striding across the next magnetic pole. As a result, each conductor cannot be further assembled into a complete winding assembly after bending forming, and the entire winding assembly has to be manufactured by adopting complex forming forms and equipment.

Summary of the Invention

Problem to be Solved by the Invention

[0003] In order to solve the problems in the prior art, the present invention proposes a stator structure for an axial flux motor.

Means for Solving the Problem

[0004] According to some embodiments of the present invention, the present invention comprises a plurality of magnetic poles, a plurality of magnetic field operating regions including a plurality of layers arranged along the axial direction of each rotation axis, a plurality of conductors constituting a multiphase winding, and at least one secondary winding, wherein each conductor, after penetrating the lowest layer of the plurality of layers, ascends and penetrates to a higher layer of the plurality of layers each time it crosses the magnetic field operating region corresponding to the next magnetic pole, until it ascends and penetrates to the uppermost layer of the plurality of layers, so that the plurality of conductors have the same geometric shape in the plurality of magnetic field operating regions of the plurality of magnetic poles. The conductors are arranged in an array, or each conductor penetrates the uppermost layer of the plurality of layers, and then descends and penetrates to the lower layers of the plurality of layers each time it crosses the magnetic field region corresponding to the next magnetic pole, until it penetrates the lowermost layer of the plurality of layers, so that the plurality of conductors are arranged in the same geometric array in the plurality of magnetic field regions of the plurality of magnetic poles, and the winding of each phase includes at least one secondary winding, each of which is a stator structure of an axial flux motor including the plurality of conductors, some of which are connected in series.

[0005] According to some embodiments of the present invention, two of the plurality of secondary windings having the same geometric arrangement are connected in series by an axial connection, or two of the plurality of secondary windings having opposite geometric arrangements are connected in series by a co-layer connection.

[0006] According to some embodiments of the present invention, two of the plurality of secondary windings having the same geometric arrangement are used to transmit current along the same circumferential direction, and two of the plurality of secondary windings having opposite geometric arrangements are used to transmit current along two circumferential directions opposite to each other.

[0007] According to some embodiments of the present invention, the axial connection portion is connected between the lowest layer and the uppermost layer of the plurality of strata of two of the plurality of secondary windings whose geometric arrangements are in the same direction.

[0008] According to some embodiments of the present invention, the same-layer connection portion is located at the lowest or uppermost layer of the plurality of layers so as to connect the plurality of secondary windings in series.

[0009] According to some embodiments of the present invention, each phase winding has a corresponding magnetic field region corresponding to each of the plurality of magnetic poles, and each magnetic field region has at least one secondary winding.

[0010] According to some embodiments of the present invention, each phase winding has two adjacent corresponding magnetic field operating regions along the circumferential direction, corresponding to each of the plurality of magnetic poles, and each magnetic field operating region has at least one secondary winding, and the geometric arrangement of the plurality of secondary windings is either in the same direction or in opposite directions.

[0011] According to some embodiments of the present invention, each phase winding has at least three adjacent corresponding magnetic field operating regions along the circumferential direction, corresponding to each of the plurality of magnetic poles, and each magnetic field operating region has at least one secondary winding, and the geometric arrangement of the plurality of secondary windings is either in the same direction or in opposite directions.

[0012] According to some embodiments of the present invention, the plurality of secondary windings are connected in series to form a single-phase winding, and each of the secondary windings includes the same number of conductors and includes N groups of conductors in which the geometric arrangement of the plurality of magnetic field regions corresponding to the plurality of magnetic poles is balanced with respect to the axis of rotation, where N is a positive integer greater than 1.

[0013] According to some embodiments of the present invention, the stator structure of an axial magnetic flux motor further comprises a soft magnetic material body including a plurality of slots, each corresponding to a magnetic field acting region, and each conductor includes a plurality of inner diameter protrusions located in the internal space surrounding the rotation axis of the soft magnetic material body, a plurality of housing portions located within the plurality of slots, and a plurality of outer diameter protrusions exposed outside the outer diameter side wall of the soft magnetic material body. [Effects of the Invention]

[0014] In summary, the stator structure of the axial flux motor of the present invention is formed by arranging each conductor in a spiral manner and having it rise or fall along the circumferential direction. This conductor structure allows different conductors to be wound around each other without changing their relative vertical positions, thus avoiding vertical crossing. As a result, each conductor can be assembled into a complete winding in a simple manner after molding, and the arrangement of the conductors can effectively fill the space within the slots, improving the slot filling rate. Furthermore, in order to divide a single-phase winding into n equal parts and balance the back electromotive force of the divided windings, it is necessary to reduce the number of conductors in each secondary winding to 1 / n. By connecting each secondary winding with a reduced number of conductors back into series, a divided and balanced single-phase winding can be formed, and the number of conductors or winding turns can be reduced to 1 / n of the original.

[0015] The above description will be explained in detail below with reference to embodiments, and the technical proposal of the present invention will be further interpreted. [Brief explanation of the drawing]

[0016] The following explanation of the attached drawings is intended to make the above and other objectives, features, advantages, and embodiments of the present invention easier to understand. [Figure 1] This is an exploded view showing the stator structure of an axial magnetic flux motor according to one embodiment of the present invention. [Figure 2] Figure 1 is an exploded view showing the soft magnetic material body in the stator structure of an axial flux motor. [Figure 3] This is an exploded view showing a single conductor according to one embodiment of the present invention. [Figure 4] This is a side view showing one conductor in Figure 3. [Figure 5] This is a top view showing one conductor in Figure 4. [Figure 6] This is an exploded view showing the stator structure of an axial magnetic flux motor without an iron core. [Figure 7]Shows the conductor partial structure of the stator structure of the axial flux motor in Fig. 6. [Figure 8] Shows the arrangement of the geometric arrangement in the slot (magnetic field acting region) of the conductor of a single secondary winding set according to an embodiment of the present invention. [Figure 9] Following Fig. 8, shows the arrangement of the geometric arrangement in the slot (magnetic field acting region) of the conductors of two series-connected secondary winding sets. [Figure 10] Following Fig. 8, shows another arrangement of the geometric arrangement in the slot (magnetic field acting region) of the conductors of two series-connected secondary winding sets. [Figure 11] Following Fig. 9, shows the arrangement of the geometric arrangement in the slot (magnetic field acting region) of the conductors of three series-connected secondary winding sets. [Figure 12] Following Fig. 9, shows another arrangement of the geometric arrangement in the slot (magnetic field acting region) of the conductors of three series-connected secondary winding sets. [Figure 13] Following Fig. 9, shows still another arrangement of the geometric arrangement in the slot (magnetic field acting region) of the conductors of three series-connected secondary winding sets. [Figure 14] Following Fig. 11, shows the arrangement of the geometric arrangement in the slot (magnetic field acting region) of the conductors of four series-connected secondary winding sets. [Figure 15A] Shows the arrangement of the geometric arrangement in the slot (magnetic field acting region) of a conductor obtained by dividing a single phase into two groups of split windings. [Figure 15B] Shows the arrangement of the geometric arrangement in the slot (magnetic field acting region) of a conductor obtained by dividing a single phase into two groups of split windings. [Figure 15C] Shows the arrangement of the geometric arrangement in the slot (magnetic field acting region) of the conductor after the two groups of split windings of Figs. 15A and 15B are connected in series. [Figure 16A] Shows the arrangement of the geometric arrangement in the slot (magnetic field acting region) of a conductor obtained by dividing a single phase into three groups of split windings. [Figure 16B] Shows the arrangement of the geometric arrangement in the slot (magnetic field acting region) of a conductor obtained by dividing a single phase into three groups of split windings. [Figure 16C]This shows the geometric arrangement of the conductor slots (magnetic field region) when a single phase is divided into three groups of segmented windings. [Figure 16D] Figures 16A, 16B, and 16C show the geometric arrangement of the conductor slots (magnetic field region) after connecting the three groups of divided windings in series. [Modes for carrying out the invention]

[0017] To make the description of the present invention more detailed and complete, one can refer to the accompanying drawings and the various embodiments described below, where the same reference numerals in the drawings represent the same or similar elements. On the other hand, well-known elements and processes are not described in the embodiments in order to avoid unnecessary limitations on the present invention. In the embodiments and claims, unless otherwise specifically limited by articles in the text, "one" and "the foregoing" refer to one or more.

[0018] Referring to Figures 1 and 2, the stator structure 100 of the axial flux motor comprises a soft magnetic material body 110 and a plurality of conductors 120. The soft magnetic material body 110 has a plurality of magnetic poles and a plurality of slots 110a. In some embodiments of the present invention, the soft magnetic material body 110 includes 24 slots 110a through which the plurality of conductors 120 are passed in a plurality of distributed windings, i.e., a plurality of distributed windings. Taking a three-phase flux motor as an example, dividing the 24 slots 110a by 3 (phases) yields 8 magnetic poles. That is, one magnetic pole covers 3 slots. In some embodiments of the present invention, the soft magnetic material body 110 is constructed by laminating a plurality of silicon steel sheets 110t along the axial direction AD or along the radial direction. In some embodiments of the present invention, the soft magnetic material body 110 is constructed from a soft magnetic composite (SMC). In some embodiments of the present invention, each of the slots 110a includes multiple layers (L1, L2, L3~Ln) arranged along the axial direction AD, and when a single conductor penetrates the slot, it occupies only a single layer.

[0019] Referring to Figures 3, 4, and 5, the conductor 121 penetrates a slot 110a of the soft magnetic material body 110 to form a winding. In some embodiments of the present invention, each of the conductors 121 includes a plurality of inner diameter projections 121i, a plurality of housings 121r, and a plurality of outer diameter projections 121o, each of which housings 121r is located in a corresponding slot of the soft magnetic material body 110 so as to be connected between the corresponding inner diameter projections 121i and outer diameter projections 121o. The soft magnetic material body 110 has a substantially hollow columnar structure, the plurality of inner diameter protrusions 121i are located in the internal space 110b of the soft magnetic material body 110, and the plurality of outer diameter protrusions 121o are exposed outside the outer diameter side wall 110c of the soft magnetic material body 110 (see Figure 5), and the internal space 110b is located between the soft magnetic material body 110 and the axis, that is, the soft magnetic material body 110 surrounds the axis to form the internal space 110b. In some embodiments of the present invention, each of the conductors 121 includes a plurality of inner diameter protrusions 121i located in the internal space 110b surrounding the axis of the soft magnetic material body 110 (see Figure 5), and the two halves (121i1, 121i2) of each inner diameter protrusion 121i are separated by one layer along the axial direction AD (see Figure 3, half 121i2 is one layer higher than half 121i1). In some embodiments of the present invention, each of the conductors 121 includes a plurality of outer diameter protrusions 121o exposed outside the outer diameter sidewall 110c of the soft magnetic material body 110 (see Figure 5), where the two halves (121o1, 121o2) of each outer diameter protrusion 121o are separated by one layer along the axial AD (see Figure 3, where half 121o2 is one layer higher than half 121o1). In some embodiments of the present invention, each of the conductors 121, after penetrating the lowest layer of the plurality of layers (see Figure 4, for example, with the bottom end 121b at layer L1), ascends and penetrates to a higher layer of the plurality of layers (e.g., L2) each time it crosses the next pole position, until it ascends and penetrates the uppermost layer of the plurality of layers (see Figure 4, for example, with the tip 121t at layer Ln).Alternatively, after each conductor 121 has penetrated the uppermost layer of the plurality of layers (see Figure 4, for example, with the tip 121t in the Ln layer), it descends and penetrates to lower layers of the plurality of layers until it ascends and penetrates the lowest layer of the plurality of layers each time it crosses the next magnetic pole (see Figure 4, for example, with the bottom end 121b in the L1 layer). In some embodiments of the present invention, each of the conductors 121 is formed by bending a continuous linear conductor. In other embodiments of the present invention, each of the conductors 121 is formed by assembling or welding a plurality of linear conductors.

[0020] Referring to Figures 6 and 7, Figure 6 shows a coreless stator structure 100a for an axial magnetic flux motor having multiple conductors 120, which can achieve a simple structure without providing a soft magnetic material body (for example, the soft magnetic material body 110 in Figures 1 and 2). Despite the absence of a soft magnetic material body, the coreless stator structure 100a still has multiple magnetic poles and multiple layers, and the conductors 120 have characteristics similar to the conductors shown in Figure 5. Each conductor 120 passes through one of the lowest layers, then moves from one magnetic pole position to the next, rising to higher layers and reaching the uppermost layer. Alternatively, each conductor 120 passes through one of the uppermost layers, then moves from one magnetic pole position to the next, descending to lower layers and reaching the lowest layer. An arrangement of conductors stacked in the axial direction constitutes a magnetic field region 111 (see Figure 7). These multiple magnetic field regions 111 are arranged adjacent to each other in a symmetrical structure along the circumferential direction, and each includes layers (L1, L2, L3~Ln) stacked in the axial direction. When a single conductor penetrates a slot or a magnetic field region 111, it occupies only a single layer. The region in each slot 110a in Figure 2 where conductors are stacked is also called a magnetic field region.

[0021] Refer to Figure 8, which shows the arrangement of the geometric configuration of the conductor housing of a single secondary winding in the slot (magnetic field region). The drawing shows the viewing angle from the outer diameter to the inner diameter, or from the inner diameter to the outer diameter. Each magnetic field region 111 in the figure contains 12 layers arranged along the axial direction AD, and this embodiment includes a secondary winding consisting of 6 conductors (i.e., conductors 1-6). The secondary winding enters the uppermost layer of the magnetic field region 111 from the layer marked IN, and conductor 1 is arranged so that it descends one layer each time the current crosses each magnetic pole, forming a helical geometric configuration down to the bottom layer (see Figures 3 and 4 simultaneously). For example, conductor 1 penetrates all the layers numbered 1 in the magnetic field region 111 in the figure, forming a helical geometric configuration (see the configuration shown by the dotted line). Furthermore, the winding axial connection WAX_CON allows the current to enter the uppermost layer of the next conductor 2, continuing the same geometric arrangement, descending one layer each time it crosses a magnetic pole, so that all the layers of the number 2 form a helical geometric arrangement. In a similar manner, multiple winding axial connection parts (i.e., similar to the thick arrows indicated by WAX_CON) allow the current to enter the conductors (3, 4, 5, 6), sequentially penetrating the layers of the magnetic field region 111 in the figure to form a helical geometric arrangement, and a secondary winding is formed by connecting the multiple conductors 1 to 6 in series and allowing current to flow, at which time the current flows out from the lowest layer of the last conductor 6 (i.e., the lowest layer indicated by OUT). All six conductors (1 to 6) of the secondary winding are used to transmit current along the circumferential direction CD1, for example, in a counterclockwise direction.

[0022] Following Figure 8, please refer to Figure 9, which shows the geometric arrangement of each conductor (7-12) of another secondary winding in the slot (magnetic field region). In order to clearly show the winding axial connection WAX_CON of conductors (7-12), the illustration of the winding axial connection of conductors 1-6 is omitted. When each phase of a multiphase winding includes two adjacent magnetic field regions 111, and each conductor (1-6 and 7-12) has a helical geometric arrangement in the same direction, current can be passed from one secondary winding (including conductors 1-6) to another secondary winding (including conductors 7-12) by connecting them in series using the axial connection AX_CON. For example, a conductor is routed downwards from one secondary winding conductor 1 to the lowest layer of conductor 6, and then connected in series to the highest layer of conductor 7 of another secondary winding by an axial connector AX_CON. Conductor 7 is then routed further downwards to the lowest layer, and the process is repeated as described above, connecting to the highest layer of conductor 8 by an axial connector WAX_CON, and so on, with conductors 9, 10, 11, etc., being routed sequentially down to the lowest layer of conductor 12. The conductors (7-12) of the secondary windings have the exact same geometric arrangement as the conductors (1-6) of the secondary windings. In this way, the conductors can fill the odd or even layers of two adjacent magnetic field regions as described above. All 12 conductors (1-12) of the two secondary windings are used to transmit current along the circumferential direction CD1. The current flows out from the lowest layer of the last conductor 12 (i.e., at the indicated OUT position).

[0023] Following Figure 8, please refer to Figure 10, which shows the geometric arrangement of each conductor (7-12) in its slot (magnetic field region), which differs from that shown in Figure 9. In this embodiment, each phase of the multiphase winding includes one magnetic field region 111. One secondary winding is routed downwards, from conductor 1 to conductor 6, and the current in conductor 6 can then be connected in series to another secondary winding conductor 7 of a different magnetic pole by a co-layer connector SL_CON, whose ends are at the same layer (the lowest layer in this embodiment). The conductors (7-12) of the secondary windings have a different helical geometric arrangement from the conductors (1-6) of the secondary windings, and the series connection by the co-layer connector SL_CON reverses the direction of the current in conductors (7-12) relative to conductors (1-6) to match the position of the magnetic poles (changing from CD1 to CD2). Unlike conductors (1-6), conductors (7-12) are wound sequentially until the current flows out from the uppermost layer of the last conductor 12 (i.e., the uppermost layer labeled OUT). Conductors (7-12) are used to transmit current along another circumferential direction CD2, which is opposite to the circumferential direction CD1 through which conductors (1-6) transmit current. For example, circumferential direction CD1 is counterclockwise, while circumferential direction CD2 is clockwise. Furthermore, in this embodiment, conductors (1-6) of the secondary windings corresponding to each phase are located in the same magnetic field region 111 as conductors (7-12) of other secondary windings, and are offset from each other by their layer positions.

[0024] In summary, in Figure 9, two secondary windings arranged in the same direction are connected in series by an axial connector AX_CON, and the current direction of the two secondary windings is the same (CD1). In Figure 10, two secondary windings arranged in opposite directions are connected in series by a co-layer connector SL_CON, and the current directions of the two secondary windings are different (CD1 and CD2).

[0025] Please refer to Figure 11, which shows the geometric arrangement of each conductor (13-18) of the other secondary windings in the slots (magnetic field acting regions), following Figure 9. In order to clearly show the winding axial connection WAX_CON of the secondary winding conductors (13-18), the illustration of the winding axial connection of the other secondary winding conductors (1-6) and conductors (7-12) is omitted. In this embodiment, each phase of the multiphase winding includes two directly adjacent magnetic field acting regions 111. Current is led from secondary winding conductor 12 to another secondary winding conductor 13 of a different magnetic pole by a same-layer connection SL_CON, where both ends are at the same layer. The secondary winding conductors (13-18) have a different helical conductor geometric arrangement from the secondary winding conductors (7-12) and secondary winding conductors (1-6). In detail, the conductors (13-18) of the secondary winding are routed upwards, while the conductors (7-12) and (1-6) of the secondary winding are routed downwards. As a result, the direction of the current is reversed (from CD1 to CD2) according to the definition of the magnetic poles. Therefore, after the conductor 12 of the secondary winding is routed to the lowest layer, the current is conducted to the lowest layer of another conductor 13 of the secondary winding by the same-layer connection SL_CON. The current is then transmitted along the circumferential direction CD2 in the conductors (13-18) of the secondary winding, rising one layer each time it crosses a magnetic pole. Each of the conductors (13-18) of the secondary winding transmits current along the circumferential direction CD2 and is connected in series with each other by the winding axial connection WAX_CON. The current flows out from the uppermost layer of the last conductor 18 (i.e., the uppermost layer of the marked OUT). Furthermore, the secondary winding conductors (1-6), secondary winding conductors (7-12), and secondary winding conductors (13-18) are in adjacent magnetic field regions 111. Note that the secondary winding conductors (7-12) and secondary winding conductors (13-18) are located in the same magnetic field region 111 and are shifted relative to each other depending on the stratigraphy.

[0026] Please refer to Figure 12, which shows the geometric arrangement of each conductor (13-18) in its slot (magnetic field region), following Figure 9, and in order to clearly show the winding axial connection WAX_CON of the secondary winding conductors (13-18), the illustration of the winding axial connection of the other secondary winding conductors (1-6) and conductors (7-12) is omitted. In this embodiment, each phase of the multiphase winding includes two directly adjacent magnetic field regions 111. When windings of the same phase are designed to fill one or more magnetic field regions, it is necessary to fill the directly adjacent magnetic field regions 111 simultaneously, but the directly adjacent magnetic field regions do not need to be completely filled. For example, each conductor (13-18) of the secondary winding may fill two directly adjacent magnetic field regions 111 of the same phase. More specifically, this embodiment is further modified based on the one shown in Figure 8, where secondary winding conductors (1-6) and secondary winding conductors (7-12) are located in two adjacent magnetic field regions 111, while secondary winding conductors (13-18) are spaced apart. Referring to Figure 12, secondary winding conductors (13-18) first fill the leftmost layer of the leftmost pair of magnetic field regions 111 together with secondary winding conductors (1-6), and then the rightmost layer of the second pair together with secondary winding conductors (7-12). The right-hand layer of the two magnetic field regions 111 of the pair is filled, and together with the secondary wound conductors (1-6), the left-hand layer of the third pair of magnetic field regions 111 on the right is filled, and together with the secondary wound conductors (7-12), the right-hand layer of the fourth pair of magnetic field regions 111 on the right is filled, thereby arranging them in a cyclical manner, with the secondary wound conductors (13-18) being routed upwards, and the secondary wound conductors (1-6) and secondary wound conductors (7-12) being routed downwards.

[0027] Following Figure 9, please refer to Figure 13, which shows the geometric arrangement of each conductor (13-18) in the slots (magnetic field operating regions) of a secondary winding different from those in Figures 11 and 12. In order to clearly show the winding axial connection WAX_CON of the secondary winding conductors (13-18), the illustration of the winding axial connection of the other secondary winding conductors (1-6) and conductors (7-12) is omitted. In this embodiment, each phase of the multiphase winding includes three directly adjacent magnetic field operating regions 111. If the windings of the same phase are designed to fill three directly adjacent magnetic field operating regions 111 for each magnetic pole, then different secondary windings and winding structures can be formed. In such an embodiment, six sets of secondary windings with the same geometric arrangement can be connected in series. In detail, the secondary winding conductors (1-6), (7-12), and (13-18) are all routed downwards, and each secondary winding is positioned in one of three directly adjacent magnetic field regions 111, arranged along the circumferential direction. It should be noted that, based on the arrangement of this embodiment, it is possible to extend the structure to accommodate four or more directly adjacent magnetic field regions 111 for each magnetic pole corresponding to each phase winding; for example, a larger stator structure can be adopted to accommodate more magnetic field regions 111, and the various forms of magnetic field regions 111 and secondary winding variations will differ depending on the winding requirements and stator design.

[0028] Please refer to Figure 14, which shows the geometric arrangement of each conductor (19-24) in the slots (magnetic field region) of another winding, following Figure 11. In order to clearly show the winding axial connection WAX_CON of the conductors (19-24) of the secondary winding, the illustration of the axial connection of the other secondary windings conductors (1-6), conductors (7-12), and conductors (13-18) is omitted. In this embodiment, each phase of the multiphase winding includes two adjacent magnetic field regions 111. When each phase of a multiphase winding needs to fill two adjacent magnetic field regions 111, the axial connector AX_CON can connect conductors (1-6) and conductors (7-12) in series, and conductors (13-18) and conductors (19-24) in series, and the co-layer connector SL_CON connects conductor 12 in the secondary winding conductors (7-12) and conductor 13 in the secondary winding conductors (13-18) in series. The secondary winding conductors (13-18) and secondary winding conductors (19-24) are routed to rise, and have a different geometric arrangement of helical conductors from the secondary winding conductors (1-6) and secondary winding conductors (7-12). As a result, the two sets of current directions (CD1 and CD2) corresponding to the multiple secondary windings have their beginnings and end reversed in accordance with the definition of magnetic poles. This allows the conductors to fill the entire layers of the two adjacent magnetic field regions 111. Other configurations are the same as those shown in Figures 9 to 13 above, and will not be explained again here.

[0029] Refer to Figures 15A, 15B, and 15C, which show the geometric arrangement of the conductors in the slots (magnetic field region) of the two groups of divided windings, obtained by dividing the three sets of secondary winding single-phase windings in Figure 12 into two groups of balanced single-phase windings. The three sets of secondary windings include secondary winding 1, secondary winding 2, and secondary winding 3. Secondary winding 1 includes conductors 1-6, secondary winding 2 includes conductors 7-12, and secondary winding 3 includes conductors 13-18. First, in Figure 15A, the divided winding A includes conductors 1-3 of the first group of secondary windings 1, conductors 10-12 of secondary winding 2, and conductors 13-15 of secondary winding 3. The first group of conductors of secondary windings 1, 2, and 3 of the divided winding A are connected in series by the same-layer connection W1_SLCON and the axial connection W1_AXCON. For example, after conductor 3 of secondary winding 1 is routed to the lowest layer, it is connected in series to conductor 10 at the uppermost layer of secondary winding 2 by the axial connection W1_AXCON. Similarly, after conductor 12 of secondary winding 2 is routed to the lowest layer, it is connected in series to conductor 13 at the lowest layer of secondary winding 3 by the same-layer connection W1_SLCON. Next, in Figure 15B, the divided winding B includes conductors 4-6 of the second group of secondary winding 1, conductors 7-9 of secondary winding 2, and conductors 16-18 of secondary winding 3. The second group of conductors of secondary winding 1, secondary winding 2, and secondary winding 3 of the divided winding B are connected in series by the same-layer connection W2_SLCON and the axial connection W2_AXCON. For example, conductor 6 of secondary winding 1 is routed down to the lowest layer and then connected in series to conductor 7 at the top of secondary winding 2 by the axial connection W2_AXCON. Similarly, conductor 9 of secondary winding 2 is routed down to the lowest layer and then directly connected to conductor 16 at the bottom of secondary winding 3 by the same-layer connection W2_SLCON. Finally, in Figure 15C, by combining the two types of divided windings described in Figures 15A and 15B, the number and position of the housings for divided windings A and B in the magnetic field acting regions A / G, B / H, C / I, D / J, E / K, and F / L become symmetrical with respect to the rotation axis AX. Furthermore, the back electromotive force of the entire single-phase winding is balanced, and the number of conductors or winding turns required for the winding as a whole can be reduced by half.

[0030] Refer to Figures 16A, 16B, 16C, and 16D, which show the geometric arrangement of the conductor slots (magnetic field region) of the divided windings, in which a single phase is divided into three groups. The two sets of secondary windings include secondary winding 1 and secondary winding 2. Secondary winding 1 includes conductors 1 to 6, and secondary winding 2 includes conductors 7 to 12. It should be noted that in this embodiment, secondary winding 1 and secondary winding 2 are routed to descend and ascend, respectively, meaning that secondary winding 1 and secondary winding 2 have opposite geometric arrangements, and secondary winding 1 (conductors 1 to 6) transmits current along the circumferential direction CD1, while secondary winding 2 (conductors 7 to 12) transmits current along the circumferential direction CD2. In Figure 16A, the split winding A includes conductors 1-2 of the first group of secondary windings 1 and conductors 11-12 (W1_IN) of secondary winding 2, and the first group of conductors of the two secondary windings of the split winding A are connected in series by the same-layer connection W1_SLCON, that is, conductor 2 of secondary winding 1 and conductor 11 of secondary winding 2 are connected in series. In Figure 16B, the split winding B includes conductors 3-4 of the second group of secondary windings 1 and conductors 9-10 of secondary winding 2, and the second group of conductors of the two secondary windings of the split winding B are connected in series by the same-layer connection W2_SLCON, that is, conductor 4 of secondary winding 1 and conductor 9 of secondary winding 2 are connected in series. In Figure 16C, the divided winding C includes conductors 5-6 of the third group of secondary winding 1 and conductors 7-8 of secondary winding 2, and the third group conductors of the two secondary windings of the divided winding C are connected in series by the same-layer connection W3_SLCON, that is, conductor 6 of secondary winding 1 and conductor 7 of secondary winding 2 are connected in series. In Figure 16D, the three types of divided winding combinations described above in Figures 16A, 16B and 16D are such that the number and position of the housings of divided windings A, B, and C in the magnetic field operating regions A / E / I, B / F / J, C / G / K, and D / H / L are symmetrical with respect to the rotation axis AX, the back electromotive force of the entire single-phase winding is balanced, and the number of conductors or winding turns required for the winding as a whole can be reduced to 1 / 3. In the preceding section, only the configuration of a divided winding in which a single phase is divided into two groups (Figure 15) or three groups (Figure 16) was illustrated. However, based on the grouping configuration described above, the configuration of a divided winding in which a single phase is divided into four or more groups can also be realized in the same manner.In other words, a single phase is divided into N groups to form a segmented winding, depending on the winding requirements or stator design. This reduces the total number of conductors or winding turns required for winding to 1 / N, where N is a positive integer greater than 1, i.e., segmented windings divided into 2, 3, 4, 5, ~N groups, etc.

[0031] The stator structure of the axial flux motor of the present invention is expandable to the application of N groups of divided windings depending on the number of phases, magnetic poles, slots (magnetic field operating regions), and strata, where N is a positive integer greater than 1. As described above, the number and position of the housings for the divided windings A, B, C~N are symmetrical with respect to the rotation axis AX, the back electromotive force of the entire winding is balanced, and the number of conductors or winding turns required for the winding as a whole can be reduced to 1 / N.

[0032] The stator structure of the axial magnetic flux motor of the present invention is formed by arranging each conductor in a spiral manner and creating a structure that rises or falls along the circumferential direction. This conductor structure allows different conductors to be wound around each other without changing their relative vertical positions, thus avoiding vertical crossing. As a result, each conductor can be assembled into a complete winding in a simple manner after molding, and the arrangement of the conductors can effectively fill the space within the slots, improving the slot filling rate. Furthermore, in order to divide a single-phase winding into n equal parts and balance the back electromotive force of the divided windings, it is necessary to reduce the number of conductors in each secondary winding to 1 / n. By connecting each secondary winding with a reduced number of conductors back into series, a divided and balanced single-phase winding can be formed, and the number of conductors or winding turns can be reduced to 1 / n of the original.

[0033] Although the present invention is disclosed in embodiments as described above, these embodiments are not intended to limit the present disclosure. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, and the scope of protection of the present invention should be based on the claims appended below. [Explanation of Symbols]

[0034] 100: Axial direction magnetic beam beam stator structure 100a: Iron Heart Stator Structure 110: Soft magnetic material body 110a:スロット 110b: Interior space 110c: Outer diameter sidewall 110t: Keisu steel plate 111: The domain of magnetic field action L1, L2, L3, Ln: Layers 120, 121, 1~24: Conductors 121b: Bottom 121t: Pioneer 121o: Outer diameter protrusion 121o1, 121o2, 121i1, 121i2: Half part 121i: Inner diameter protrusion 121r: Containment Department AX: Rotary Axis AD: Axis direction A, G, B, H, C, I, D, J, E, K, F, L: Magnetic field area CD1, CD2: Zhou direction SL_CON, W1_SLCON, W2_SLCON, W3_SLCON: Same layer interface WAX_CON: Roll assembly axis connection W1_AXCON, W2_AXCON, W3_AXCON, AX_CON: Axial direction connectors W1_IN, W2_IN, W3_IN, IN: Current input force markings W1_OUT, W2_OUT, W3_OUT, OUT: Current output markings

Claims

1. Multiple magnetic poles, Multiple magnetic field regions, each containing multiple strata arranged along the axis of rotation, Multiple conductors forming a multiphase winding, Equipped with, Each conductor, after penetrating the lowest layer of the plurality of layers, ascends and penetrates higher layers of the plurality of layers each time it crosses the magnetic field region corresponding to the next magnetic pole, until it penetrates the uppermost layer of the plurality of layers, so that the plurality of conductors are arranged in the same geometric arrangement in the plurality of magnetic field regions of the plurality of magnetic poles, or Each conductor, after penetrating the uppermost layer of the plurality of layers, descends and penetrates to the lower layers of the plurality of layers each time it crosses the magnetic field region corresponding to the next magnetic pole, until it penetrates the lowest layer of the plurality of layers, so that the plurality of conductors are arranged in the same geometric arrangement in the plurality of magnetic field regions of the plurality of magnetic poles. Each phase winding includes at least one secondary winding, and each secondary winding is a stator structure of an axial flux motor including the plurality of conductors, some of which are connected in series.

2. The two sets of secondary windings whose geometric arrangements are in the same direction are connected in series by an axial connection, or The stator structure for an axial magnetic flux motor according to claim 1, wherein two of the plurality of secondary windings having opposite geometric arrangements are connected in series by a co-layer connection portion.

3. The stator structure for an axial magnetic flux motor according to claim 2, wherein two of the plurality of secondary windings having the same geometric arrangement are used to transmit current along the same circumferential direction, or two of the plurality of secondary windings having opposite geometric arrangements are used to transmit current along two circumferential directions opposite to each other.

4. The stator structure for an axial magnetic flux motor according to claim 2, wherein the axial connection portion is connected between the lowest layer of the plurality of layers and the uppermost layer of the plurality of layers of two of the plurality of secondary windings whose geometric arrangements are arranged in the same direction.

5. The stator structure for an axial magnetic flux motor according to claim 2, wherein the layer connection portion is located at the lowest layer of the plurality of layers or at the uppermost layer of the plurality of layers so as to connect the plurality of secondary windings in series.

6. The stator structure for an axial magnetic flux motor according to claim 1, wherein each phase winding has a corresponding magnetic field acting region corresponding to each of the plurality of magnetic poles, and each magnetic field acting region has at least one secondary winding.

7. The stator structure for an axial magnetic flux motor according to claim 1, wherein each winding of each phase has two adjacent corresponding magnetic field operating regions along the circumferential direction corresponding to each of the plurality of magnetic poles, and each magnetic field operating region has at least one secondary winding, and the geometric arrangement of the plurality of secondary windings is either in the same direction or in opposite directions.

8. The stator structure for an axial magnetic flux motor according to claim 1, wherein each phase winding has at least three adjacent corresponding magnetic field operating regions along the circumferential direction corresponding to each of the plurality of magnetic poles, and each magnetic field operating region has at least one secondary winding, and the geometric arrangement of the plurality of secondary windings is either in the same direction or in opposite directions.

9. The stator structure for an axial magnetic flux motor according to claim 1, wherein the plurality of secondary windings are connected in series to form a single-phase winding, and each of the secondary windings includes the same number of the plurality of conductors and includes N groups of conductors in which the geometric arrangement of the plurality of magnetic field regions corresponding to the plurality of magnetic poles is balanced with respect to the rotation axis, where N is a positive integer greater than 1.

10. The soft magnetic material body further comprises a plurality of slots, each corresponding to a magnetic field action region, The stator structure for an axial magnetic flux motor according to claim 1, wherein each conductor includes a plurality of inner diameter protrusions located in the internal space surrounding the rotation axis of the soft magnetic material body, a plurality of housing portions located in the corresponding plurality of slots, and a plurality of outer diameter protrusions exposed outside the outer diameter side wall of the soft magnetic material body.

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