Flat wire winding motor with optimized jumper wire
By using standard hairpins and similar jumper hairpins in flat wire winding motors, the problem of long R&D cycle of multi-layer flat wire phase winding motors in the existing technology is solved, and product serialization and design efficiency are improved.
Patent Information
- Application Number
- CN202510827273.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-19
- Publication Date
- 2025-09-19
AI Technical Summary
Existing multi-layer flat wire phase winding motors require the use of various types of hairpins when designing jumpers, resulting in a long R&D cycle and the inability to achieve serialization.
The flat wire winding design with reasonable structure is adopted. By adding standard hairpins and jumper hairpins of the same type, special jumper hairpins are reduced or not added, thus realizing product serialization.
It shortens the R&D cycle, realizes the product serialization of flat wire winding motors, and improves design flexibility and efficiency.
Smart Images
Figure BDA0005458405990000051 
Figure BDA0005458405990000061 
Figure BDA0005458405990000062
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of motors, and in particular to a flat wire winding motor with optimized jumpers. Background Art
[0002] With the rapidly increasing requirements for torque and power density in new energy vehicle drive motors, drive motors are trending towards flatter wire. Using flat wire for motor stator windings significantly increases slot fill rate while also ensuring optimal heat dissipation within the slots. Flat wire phase windings in motors typically employ wave windings, allowing for varying pitches to meet winding layout and insulation requirements. Common stator winding flat wire configurations include Hairpin, I-pin, and continuous wave winding, with the first two currently being the most established. The number of flat wire layers in stator windings varies, ranging from 2, 4, 5, 6, 7, 8, 10, to 12, depending on the complexity of the manufacturing process. Existing multi-layer flat wire phase windings typically require at least one type of hairpin with two legs spanning three or more layers, or a combination of long and short-distance hairpins to create jumpers between layers and groups, increasing the number of hairpin types. Windings with varying numbers of layers require redesigned jumpers, resulting in lengthy development cycles and limitations in serial production. Summary of the Invention
[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a flat wire winding motor with optimized jumpers with a reasonable structure, reducing or not adding special jumper hairpins, achieving product serialization by only adding standard hairpins and jumper hairpins of the same type, and shortening the R&D cycle.
[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0005] A flat wire winding motor with optimized jumper wires includes a stator assembly and a rotor assembly. The stator assembly is provided with a phase winding, and each phase winding includes at least two concentrically arranged coil groups. The legs of each coil group are located on two adjacent layers of the phase winding, and each group includes at least two paired coils arranged in sequence in circumferentially adjacent slots. The paired coils include a first coil ring and a second coil ring that are arranged circumferentially offset by one magnetic pole position. The first coil ring and the second coil ring each include p-1 U-shaped conductors connected in series in sequence in the circumferential direction. The pitch of the U-shaped conductors is Y, and there is a magnetic pole position between two U-shaped conductors connected in series, where p is the number of magnetic pole pairs.
[0006] In the two pairs of coils at corresponding positions on two adjacent coil groups, a first jumper hairpin is connected in series between the two first coil loops, and a second jumper hairpin is connected in series between the two second coil loops, and the two legs of the first jumper hairpin and the two legs of the second jumper hairpin are both distributed on the adjacent Nth layer and N+1th layer, where N is an even number;
[0007] In the paired coils on the innermost or outermost coil group, a reverse conductor is connected in series between the first coil ring and the second coil ring.
[0008] Furthermore, two paired coils are sequentially arranged on circumferentially adjacent slots, namely, paired coils in the first position and paired coils in the second position; between two adjacent groups of the coil groups, the sum of the pitches of the first jumper hairpins connected in series between the first coil rings on the two paired coils in the first position and the first jumper hairpins connected in series between the first coil rings on the two paired coils in the second position is 2Y; the sum of the pitches of the second jumper hairpins connected in series between the second coil rings on the two paired coils in the first position and the second jumper hairpins connected in series between the second coil rings on the two paired coils in the second position is 2Y.
[0009] Furthermore, the sum of the pitches of the reverse conductor connected in series between the first coil loop and the second coil loop in the first position paired coil and the reverse conductor connected in series between the first coil loop and the second coil loop in the second position paired coil is 2K, where K is the pole pitch.
[0010] Furthermore, between two pairs of coils at the first position on two adjacent groups of coil assemblies, the pitch of the first jumper hairpins connected in series between the first coil loops is equal to the pitch of the second jumper hairpins connected in series between the second coil loops; the pitch of the reverse conductor connected in series between the first coil loop and the second coil loop in the innermost or outermost layer of the paired coils at the first position is K, where K is the pole pitch;
[0011] Between the two second-position paired coils on two adjacent groups of coil assemblies, the pitch of the first jumper hairpins connected in series between the first coil loops is equal to the pitch of the second jumper hairpins connected in series between the second coil loops; the pitch of the reverse conductor connected in series between the first coil loop and the second coil loop in the innermost or outermost second-position paired coils is K, where K is the pole pitch.
[0012] Furthermore, between two pairs of coils at the first position on two adjacent groups of coil assemblies, the sum of the pitches of the first jumper hairpins connected in series between the first coil loops and the second jumper hairpins connected in series between the second coil loops is 2Y; between two pairs of coils at the second position on two adjacent groups of coil assemblies, the sum of the pitches of the first jumper hairpins connected in series between the first coil loops and the second jumper hairpins connected in series between the second coil loops is 2Y; and the pitches of the two reverse conductors are K+1 and K-1, respectively.
[0013] Furthermore, the reverse conductor includes two first S-shaped conductors with the same twisting direction and both located in the innermost layer or the outermost layer, the first S-shaped conductor includes a slot interior for passing through the stator core slot, and a welding end and a wire insertion end twisted in opposite directions at both ends of the slot interior; a jumper conductor is connected in series between the wire insertion ends of the two first S-shaped conductors.
[0014] Furthermore, the reverse conductor is a U-shaped conductor with both legs located in the outermost layer or the innermost layer. The U-shaped conductor includes two slots for passing through the stator core slots, and welding ends and wire insertion ends twisted in opposite directions at both ends of the corresponding slots; the two wire insertion ends in the slots are twisted in the same direction and are connected by an integrally formed conductor.
[0015] Furthermore, the other ends of all the first coil rings and second coil rings on the coil group located in the outermost layer or the innermost layer are connected to a second S-shaped conductor, and the second S-shaped conductor includes a slot passing through the iron core slot, and a welding end and a wire end twisted in opposite directions at both ends of the slot; the twisting direction of the welding ends of all the second S-shaped conductors is the same.
[0016] Furthermore, it also includes a star point connecting conductor arranged in an arc shape along the circumferential direction, the star point connecting conductor is connected to the second S-shaped conductors on all the first coil rings or the second coil rings, and is connected to the plug-in end of the second S-shaped conductor.
[0017] In summary, the present invention has the advantages of reasonable structure, reducing or not adding special jumper cards, achieving product serialization by only adding standard cards and similar jumper cards, shortening the R&D cycle, etc. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the overall structure of the stator assembly in Example 1.
[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the flat wire phase winding of one phase.
[0020] Figure 3 for Figure 2Schematic diagram of the structure of the two paired coils on the middle and outer layer groups.
[0021] Figure 4 for Figure 3 Schematic diagram of the structure of a paired coil on the middle and outer layer groups.
[0022] Figure 5 for Figure 2 Schematic diagram of the structure of the two paired coils on the middle inner layer group.
[0023] Figure 6 for Figure 5 Schematic diagram of the structure of a paired coil on the middle inner layer group.
[0024] Figure 7 for Figure 2 Schematic diagram of the connection structure of two first coil rings on two adjacent layers of coil groups.
[0025] Figure 8 for Figure 2 Schematic diagram of the connection structure of two second coil rings on two adjacent layers of coil groups.
[0026] Figure 9 for Figure 2 Schematic diagram of the structure in which the paired coils are connected in series in the first position.
[0027] Figure 10 for Figure 2 Schematic diagram of the structure in which the paired coils are connected in series in the second position.
[0028] Figure 11 Another structural diagram of the reverse conductor.
[0029] Figure 12 This is a schematic diagram of the overall structure of the stator assembly in Example 2.
[0030] Figure 13 This is a schematic structural diagram of a single-phase flat wire winding in Example 2.
[0031] Figure 14 for Figure 13 Schematic diagram of the structure in which the paired coils are connected in series in the first position.
[0032] Figure 15 for Figure 13 Schematic diagram of the structure in which the paired coils are connected in series in the second position.
[0033] Figure 16 and Figure 17 This is a structural diagram of Example 3.
[0034] Figure 18 and Figure 19 This is a structural diagram of Example 4.
[0035] Figure 20 and Figure 21 This is a structural diagram of Example 5.
[0036] Figure 22 、 Figure 23 and Figure 24 This is a structural diagram of Example 6.
[0037] Figure 25 and Figure 26 This is a structural diagram of Example 7.
[0038] Figure 27 and Figure 28 This is a structural diagram of Example 8.
[0039] Figures 29 to 32 This is a structural diagram of Example 9.
[0040] Figure 33 and Figure 34 This is a structural diagram of Example 10.
[0041] Figure 35 and Figure 36 This is a structural diagram of Example 11.
[0042] Figure 37 and Figure 38 This is a structural diagram of Example 12.
[0043] Figure 39 and Figure 40 This is a structural diagram of Example 13.
[0044] Figure 41 and Figure 42 This is a structural diagram of Example 14.
[0045] Figure 43 and Figure 44 This is a structural diagram of Example 15.
[0046] Figure 45 and Figure 46 This is a structural diagram of Example 16.
[0047] Figures 47 to 49 This is a structural diagram of Example 17.
[0048] Figure 50 and Figure 51 This is a structural diagram of Example 18.
[0049] Figure 52 and Figure 53 This is a structural diagram of Example 19. DETAILED DESCRIPTION
[0050] The present invention will be further described in detail below with reference to the embodiments.
[0051] Example 1: A flat wire winding motor includes a stator assembly and a rotor assembly. The stator assembly includes a stator core. The stator core has stator core slots uniformly distributed along the circumference. Three-phase flat wire phase windings are arranged in the stator core slots. Figure 1 and Figure 2 As shown, each flat wire phase winding includes two sets of concentrically arranged coil groups 1. Figure 1 The three-phase flat wire phase winding coil group 1 forms two concentric rings. Figure 2 The two-layer coil group 1 of the flat wire phase winding is shown in the figure. The legs of each coil group 1 are located on two adjacent layers of the phase winding. Figure 1 and Figure 2 As can be seen from the figure, the outer coil group 1 occupies the first and second layers from the outside to the inside in the radial direction, and the inner coil group 1 occupies the third and fourth layers from the outside to the inside in the radial direction.
[0052] In this embodiment, each coil group 1 includes two pairs of coils 2 arranged in sequence at circumferentially adjacent slots, such as Figure 3 and Figure 5 As shown, Figure 3 and Figure 5 In the figure, two pairs of coils 2 are arranged in circumferentially adjacent slots. For the convenience of accurate description, they are respectively the first position paired coils and the second position paired coils. Figure 3 and Figure 5 , the paired coil 2 on the left is the first-position paired coil, that is, the first paired coil 2 in the clockwise direction; the paired coil 2 on the right is the second-position paired coil, that is, the second paired coil 2 in the clockwise direction.
[0053] Each of the paired coils 2 includes a first coil ring 21 and a second coil ring 22 that are circumferentially offset by one magnetic pole position. The first coil ring 21 and the second coil ring 22 each include p-1 U-shaped conductors connected in series in the circumferential direction. The pitch of the U-shaped conductors is Y. There is one magnetic pole position between two U-shaped conductors connected in series. p is the number of magnetic pole pairs. Figure 4 and Figure 6 As shown in the figure, the first coil ring 21 is drawn with a dotted line, and the second coil ring 22 is drawn with a solid line. In this embodiment, the number of magnetic pole pairs p is 4, the number of stator core slots is 48, the pole pitch K=6, and the pitch Y=5. It can be seen from the figure that the first coil ring 21 and the second coil ring 22 each include 3 U-shaped conductors, and the first coil ring 21 and the second coil ring 22 are staggered, that is, the position of one magnetic pole is offset between the two.
[0054] In the two pairs of coils 2 at corresponding positions on two adjacent coil groups 1, a first jumper hairpin 41 is connected in series between the two first coil loops 21, and a second jumper hairpin 42 is connected in series between the two second coil loops 22. The two legs of the first jumper hairpin 41 and the two legs of the second jumper hairpin 42 are both distributed on the adjacent Nth layer and N+1th layer, where N is an even number.
[0055] That is, in two adjacent coil groups 1, Figure 3 and Figure 5 As shown, the first paired coil ring 2 (first position paired coil) of the outer layer group 1 in the clockwise direction and the first paired coil ring 2 (first position paired coil) of the inner layer group 1 in the clockwise direction are two paired coils in corresponding positions, and the second paired coil ring 2 (second position paired coil) of the outer layer group 1 in the clockwise direction and the second paired coil ring 2 (second position paired coil) of the inner layer group 1 in the clockwise direction are two paired coils in corresponding positions.
[0056] like Figure 7 As shown, in two adjacent coil assemblies 1, a first jumper hairpin 41 is connected between the inner first coil loop 21 and the outer first coil loop 21. The first jumper hairpin 41 is depicted with a dotted line. In this embodiment, the two legs of the outer first coil loop 21 are located on the first and second layers, respectively, while the two legs of the inner first coil loop 21 are located on the third and fourth layers, respectively. The two legs of the first jumper hairpin 41 are located on the second and third layers, respectively, allowing the first jumper hairpin 41 to connect the two first coil loops 21 in the inner and outer layers in series.
[0057] Correspondingly, such as Figure 8 As shown, in two adjacent coil assemblies 1, a second crossover hairpin 42 is connected between the inner and outer second coil loops 22. The second crossover hairpin 42 is depicted with dashed lines. In this embodiment, the two legs of the outer second coil loop 22 are located on the first and second layers, respectively, while the two legs of the inner second coil loop 22 are located on the third and fourth layers, respectively. The two legs of the second crossover hairpin 42 are located on the second and third layers, respectively, allowing the second crossover hairpin 42 to connect the two inner and outer second coil loops 22 in series.
[0058] Specifically, between two adjacent coil assemblies 1, the sum of the pitches of the first crossover hairpins 41 connected in series between the first coil loops 21 of the two pairs of coils in the first position and the first crossover hairpins 41 connected in series between the first coil loops 21 of the two pairs of coils in the second position is 2Y; the sum of the pitches of the second crossover hairpins 42 connected in series between the second coil loops 22 of the two pairs of coils in the first position and the second crossover hairpins 42 connected in series between the second coil loops 22 of the two pairs of coils in the second position is 2Y. Simultaneously, between two pairs of coils in the first position on two adjacent coil assemblies 1, the pitch of the first crossover hairpins 41 connected in series between the first coil loops 21 is equal to the pitch of the second crossover hairpins 42 connected in series between the second coil loops 22; and between two pairs of coils in the second position on two adjacent coil assemblies 1, the pitch of the first crossover hairpins 41 connected in series between the first coil loops 21 is equal to the pitch of the second crossover hairpins 42 connected in series between the second coil loops 22.
[0059] like Figure 9 As shown, the pitch of the first jumper hairpin 41 connected between the two first-position paired coils is 4, and the pitch of the second jumper hairpin 42 connected between the two first-position paired coils is also 4, that is, the pitch of the first jumper hairpin 41 connected in series between the first coil loops 21 on the two first-position paired coils is equal to the pitch of the second jumper hairpin 42 connected in series between the second coil loops 22; Figure 10 As shown, the pitch of the first jumper hairpin 41 connecting the two second-position paired coils is 6, and the pitch of the second jumper hairpin 42 connecting the two second-position paired coils is also 6. That is, the pitch of the first jumper hairpin 41 connected in series between the first coil loops 21 and the pitch of the second jumper hairpin 42 connected in series between the second coil loops 22 of the two second-position paired coils are equal. Furthermore, between two adjacent coil assemblies 1, the sum of the pitches of the two first jumper hairpins 41 is 10 = 2Y, and the sum of the pitches of the two second jumper hairpins 42 is 10 = 2Y, with Y = 5.
[0060] In this embodiment, in the two paired coils 2 on the innermost coil group 1, a reverse conductor 5 is connected in series between the first coil ring 21 and the second coil ring 22 on each paired coil 2. The reverse conductor 5 is a U-shaped conductor with both legs located in the innermost layer. The U-shaped conductor includes two slot interiors 61 for passing through the stator core slots, and welding ends 62 and plug-in ends 63 twisted in opposite directions and arranged at both ends of the corresponding slot interiors 61; the plug-in ends 63 of the two slot interiors 61 are twisted in the same direction and are connected by an integrally formed conductor, such as Figure 5 and Figure 6 As shown, Figure 6The reverse conductor 5 is drawn with a double-dotted line.
[0061] At the same time, the sum of the pitches of the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the first position pair of coils and the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the second position pair of coils is 2K, where K is the pole pitch. In this embodiment, the pole pitch K=6, 2K=12, as Figure 2 As shown, the pitch of the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the innermost first position paired coil is 6=K, and the pitch of the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the innermost second position paired coil is 6=K, where K is the pole pitch, and the sum of the pitches of the two reverse conductors 5 is 12, i.e., 2K.
[0062] In specific implementation, the reverse conductor 5 can also be Figure 10 The structure in the embodiment is as follows: the reverse conductor 5 includes two first S-shaped conductors 51 with the same twisting direction and both located in the innermost layer or the outermost layer; the first S-shaped conductor includes a slot interior 61 for passing through the stator core slot, and a welding end 62 and a plug-in end 63 twisted in opposite directions at both ends of the slot interior 61; a jumper conductor 52 is connected in series between the plug-in ends 63 of the two first S-shaped conductors.
[0063] In this embodiment, the other ends of all the first coil rings 21 and second coil rings 22 on the outermost coil group 1 are connected to a second S-shaped conductor, and the second S-shaped conductor includes a slot interior 61 passing through the core slot, and a welding end 62 and a wire end 63 twisted in opposite directions at both ends of the slot interior 61; the twisting direction of the welding ends 62 of all the second S-shaped conductors is the same. Figure 3 and Figure 4 As shown, Figure 4 The second S-shaped conductor in FIG is drawn with a double-dotted line.
[0064] like Figure 2 As shown, it also includes a star point connection conductor 3 arranged in an arc shape along the circumferential direction, which is connected to the second S-shaped conductors on all the first coil rings 21 or the second coil rings 22 and connected to the plug-in end 63 of the second S-shaped conductor.
[0065] In this embodiment, for any phase winding, at the first position in the clockwise direction, all first coil rings 21 are connected in series in sequence through the first jumper hairpin 41, and then the innermost first coil ring 21 is connected to the innermost second coil ring 22 through the reverse conductor 5, and all second coil rings 22 are connected in series in sequence through the second jumper hairpin 42 to form a first branch circuit. Figure 9 Similarly, at the second position in the clockwise direction, all first coil loops 21 are connected in series via the first jumper hairpin 41, and then the innermost first coil loop 21 is connected to the innermost second coil loop 22 via the reverse conductor 5, and all second coil loops 22 are connected in series via the second jumper hairpin 42 to form a second branch circuit, as shown. Figure 10 shown.
[0066] Example 2: Figures 12 to 15 As shown, in this embodiment, the number of stator core slots is 48, the number of magnetic pole pairs p is 4, the pole pitch K=6, and the pitch Y of the U-shaped conductor is 5; the arrangement of the first coil ring 21, the second coil ring 22, the paired coils 2, the coil group 1, the first jumper hairpin 41, the second jumper hairpin 42 and the reverse conductor 5 are the same as those in Example 1. The main difference from Example 1 is that each flat wire phase winding includes three groups of concentrically arranged coil groups 1, and the legs of each group of the coil groups 1 are located on two adjacent layers of the phase winding. In the direction from the outside to the inside, the outermost coil group 1 occupies the first and second layers in the radial direction, the middle layer coil group 1 occupies the third and fourth layers in the radial direction, and the innermost layer coil group 1 occupies the fifth and sixth layers in the radial direction. Figure 12 As shown, the three coil groups 1 on the three-phase flat wire phase winding form three concentric ring structures.
[0067] In the two adjacent coil groups 1 on the outside, as shown in FIG. Figure 14 As shown, the pitch of the first jumper hairpin 41 connected between the two first-position paired coils is 4, and the pitch of the second jumper hairpin 42 connected between the two first-position paired coils is also 4, that is, the pitch of the first jumper hairpin 41 connected in series between the first coil loops 21 and the pitch of the second jumper hairpin 42 connected in series between the second coil loops 22 on the two first-position paired coils are equal;
[0068] like Figure 15 As shown, the pitch of the first jumper hairpin 41 connecting the two second-position paired coils is 6, and the pitch of the second jumper hairpin 42 connecting the two second-position paired coils is also 6. That is, the pitch of the first jumper hairpin 41 connected in series between the first coil loops 21 and the pitch of the second jumper hairpin 42 connected in series between the second coil loops 22 of the two second-position paired coils are equal. Furthermore, the sum of the pitches of the two first jumper hairpins 41 is 4+6=10, and the sum of the pitches of the two second jumper hairpins 42 is 4+6=10, so Y=5.
[0069] In the two adjacent coil groups 1 on the inner side, as shown in FIG. Figure 14As shown, the pitch of the first jumper hairpin 41 connected between the two first-position paired coils is 6, and the pitch of the second jumper hairpin 42 connected between the two first-position paired coils is also 6, that is, the pitch of the first jumper hairpin 41 connected in series between the first coil loops 21 on the two first-position paired coils is equal to the pitch of the second jumper hairpin 42 connected in series between the second coil loops 22;
[0070] like Figure 15 As shown, the pitch of the first jumper hairpin 41 connecting the two second-position paired coils is 4, and the pitch of the second jumper hairpin 42 connecting the two second-position paired coils is also 4. That is, the pitch of the first jumper hairpin 41 connected in series between the first coil loops 21 and the pitch of the second jumper hairpin 42 connected in series between the second coil loops 22 of the two second-position paired coils are equal. Furthermore, the sum of the pitches of the two first jumper hairpins 41 is 6+4=10, and the sum of the pitches of the two second jumper hairpins 42 is 6+4=10, so Y=5.
[0071] In this embodiment, the pole pitch K=6, 2K=12, as shown in FIG. Figures 13-15 As shown, the pitch of the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the innermost first position paired coil is 6=K, and the pitch of the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the innermost second position paired coil is 6=K, where K is the pole pitch, and the sum of the pitches of the two reverse conductors 5 is 12, i.e., 2K.
[0072] As shown in Table 1 below, in Table 1, the outer layer group represents two adjacent coil groups 1 located on the outside; the inner layer group represents two adjacent coil groups 1 located on the inside; CL6 represents the first jumper hairpin or the second jumper hairpin with a pitch of 6, CS4 represents the first jumper hairpin or the second jumper hairpin with a pitch of 4, and Z6 represents the reverse conductor with a pitch of 6.
[0073] Table 1 Card issuing pitch of embodiment 2
[0074]
[0075] Example 3: This example has the same overall structure as Example 2. The main difference from Example 2 is that the pitch of all first cross-connect hairpins 41 and second cross-connect hairpins 42 is 5. Figure 16 and Figure 17As shown, in any two adjacent coil assemblies 1, the pitch of the first crossover hairpins 41 connected in series between the first coil loops 21 and the pitch of the second crossover hairpins 42 connected in series between the second coil loops 22 on the two first-position paired coils are equal; the pitch of the first crossover hairpins 41 connected in series between the first coil loops 21 and the pitch of the second crossover hairpins 42 connected in series between the second coil loops 22 on the two second-position paired coils are equal. Furthermore, the sum of the pitches of the two first crossover hairpins 41 is 5+5=10, and the sum of the pitches of the two second crossover hairpins 42 is 5+5=10, i.e., 2Y.
[0076] As shown in Table 2 below, in Table 2, the outer layer group represents two adjacent coil groups 1 located on the outside; the inner layer group represents two adjacent coil groups 1 located on the inside; C5 represents the first jumper hairpin or the second jumper hairpin with a pitch of 5, and Z6 represents the reverse conductor with a pitch of 6.
[0077] Table 2 Card issuing pitch of embodiment 3
[0078]
[0079] Example 4: The overall structure of this embodiment is the same, and the arrangement of the first cross-connection hairpin and the second cross-connection hairpin on the two adjacent coil groups 1 on the outside are the same as those in Example 2. The main difference from Example 2 is that Figure 18 and Figure 19 As shown, in the two adjacent inner coil groups 1, the pitch of all first jumper hairpins 41 and second jumper hairpins 42 is 5. That is, the pitch of the first jumper hairpins 41 connected in series between the first coil loops 21 of the two first-position paired coils is equal to the pitch of the second jumper hairpins 42 connected in series between the second coil loops 22; the pitch of the first jumper hairpins 41 connected in series between the first coil loops 21 of the two second-position paired coils is equal to the pitch of the second jumper hairpins 42 connected in series between the second coil loops 22. Furthermore, the sum of the pitches of the two first jumper hairpins 41 is 5+5=10, and the sum of the pitches of the two second jumper hairpins 42 is 5+5=10, i.e., 2Y.
[0080] As shown in Table 3 below, in Table 3, the outer layer group represents two adjacent coil groups 1 located on the outside; the inner layer group represents two adjacent coil groups 1 located on the inside; C5 represents the first jumper hairpin or the second jumper hairpin with a pitch of 5, CL6 represents the first jumper hairpin or the second jumper hairpin with a pitch of 6, CS4 represents the first jumper hairpin or the second jumper hairpin with a pitch of 4, and Z6 represents the reverse conductor with a pitch of 6.
[0081] Table 3 Card issuing pitch of Example 4
[0082]
[0083] Example 5: The overall structure of this embodiment is the same as that of Example 2, and the arrangement of the first cross-connection hairpin and the second cross-connection hairpin on the two adjacent coil groups 1 on the inner side is the same as that of Example 2. The main difference from Example 2 is that Figure 10 and Figure 21 As shown, in the two adjacent outer coil groups 1, the pitch of all first jumper hairpins 41 and second jumper hairpins 42 is 5. That is, the pitch of the first jumper hairpins 41 connected in series between the first coil loops 21 of the two first-position paired coils is equal to the pitch of the second jumper hairpins 42 connected in series between the second coil loops 22; and the pitch of the first jumper hairpins 41 connected in series between the first coil loops 21 of the two second-position paired coils is equal to the pitch of the second jumper hairpins 42 connected in series between the second coil loops 22. Furthermore, the sum of the pitches of the two first jumper hairpins 41 is 5+5=10, and the sum of the pitches of the two second jumper hairpins 42 is 5+5=10, i.e., 2Y.
[0084] As shown in Table 4 below, in Table 4, the outer layer group represents two adjacent coil groups 1 located on the outside; the inner layer group represents two adjacent coil groups 1 located on the inside; C5 represents the first jumper hairpin or the second jumper hairpin with a pitch of 5, CL6 represents the first jumper hairpin or the second jumper hairpin with a pitch of 6, CS4 represents the first jumper hairpin or the second jumper hairpin with a pitch of 4, and Z6 represents the reverse conductor with a pitch of 6.
[0085] Table 3 Card issuing pitch of Example 4
[0086]
[0087]
[0088] Example 6: Figure 22 As shown, the overall structure of this embodiment is the same as that of embodiment 2. The main difference from embodiment 2 is that, in the two adjacent coil groups 1 on the outside, as shown in FIG. Figure 23 As shown, the pitch of the first jumper hairpin 41 connected between the two first-position paired coils is 4, and the pitch of the second jumper hairpin 42 connected between the two first-position paired coils is 6. The sum of the pitches of the two is 4+6=10. That is, between the two first-position paired coils on two adjacent groups of the coil assemblies 1, the sum of the pitches of the first jumper hairpin 41 connected in series between the first coil loops 21 and the second jumper hairpin 42 connected in series between the second coil loops 22 is 2Y, where Y=5.
[0089] like Figure 24As shown, the pitch of the first jumper hairpin 41 connected between the two second-position paired coils is 6, and the pitch of the second jumper hairpin 42 connected between the two second-position paired coils is 4. The sum of the pitches of the two is 6+4=10. That is, between the two second-position paired coils on two adjacent groups of the coil assemblies 1, the sum of the pitches of the first jumper hairpin 41 connected in series between the first coil loops 21 and the second jumper hairpin 42 connected in series between the second coil loops 22 is 2Y, where Y=5.
[0090] In the two adjacent coil groups 1 on the inner side, as shown in FIG. Figure 23 As shown, the pitch of the first cross-connect hairpin 41 connecting the two first position paired coils is 6, and the pitch of the second cross-connect hairpin 42 connecting the two first position paired coils is 4. The sum of the two pitches is 6+4=10, that is, 2Y. Figure 24 As shown, the pitch of the first jumper hairpin 41 connected between the two second position paired coils is 4, and the pitch of the second jumper hairpin 42 connected between the two second position paired coils is 6. The sum of the two pitches is 4+6=10, that is, 2Y.
[0091] In this embodiment, the pole pitch K=6, as Figure 22 As shown, the pitch of the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the innermost first position paired coil is 7, that is, K+1, and the pitch of the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the innermost second position paired coil is 5, that is, K-1. The sum of the pitches of the two reverse conductors 5 is 7+5=12, that is, 2K.
[0092] As shown in Table 5 below, in Table 5, the outer layer group represents two adjacent coil groups 1 located on the outside; the inner layer group represents two adjacent coil groups 1 located on the inside; CL6 represents the first jumper hairpin or the second jumper hairpin with a pitch of 6, CS4 represents the first jumper hairpin or the second jumper hairpin with a pitch of 4, and Z5 and Z7 represent reverse conductors with pitches of 5 and 7, respectively.
[0093] Table 5 Card issuing pitch of Example 6
[0094]
[0095] Example 7: This example has the same overall structure as Example 6. The main difference from Example 6 is that the pitch of all first cross-connect hairpins 41 and second cross-connect hairpins 42 is 5. Figure 25 and Figure 26As shown, between any two adjacent pairs of coils in the first position on any two adjacent coil assemblies 1, the sum of the pitches of the first jumper hairpins 41 connected in series between the first coil loops 21 and the second jumper hairpins 42 connected in series between the second coil loops 22 is 2Y, where Y = 5. Between any two adjacent pairs of coils in the second position on any two adjacent coil assemblies 1, the sum of the pitches of the first jumper hairpins 41 connected in series between the first coil loops 21 and the second jumper hairpins 42 connected in series between the second coil loops 22 is 2Y, where Y = 5.
[0096] As shown in Table 6 below, in Table 6, the outer layer group represents two adjacent coil groups 1 located on the outside; the inner layer group represents two adjacent coil groups 1 located on the inside; C5 represents the first jumper hairpin or the second jumper hairpin with a pitch of 5, and Z5 and Z7 represent reverse conductors with pitches of 5 and 7, respectively.
[0097] Table 6 Card issuing pitch of Example 7
[0098]
[0099]
[0100] Example 8: The overall structure of this embodiment is the same as that of Example 6. The configuration of the first cross-connection hairpin and the second cross-connection hairpin on the two adjacent coil groups 1 on the outside are the same as those in Example 6. The main difference from Example 6 is that Figure 27 and Figure 28 As shown, in the two adjacent coil groups 1 on the inner side, the pitch of all the first cross-connect hairpins 41 and the second cross-connect hairpins 42 is 5.
[0101] As shown in Table 7 below, in Table 7, the outer group represents two adjacent coil groups 1 located on the outside; the inner group represents two adjacent coil groups 1 located on the inside; C5 represents the first jumper hairpin or the second jumper hairpin with a pitch of 5, CL6 represents the first jumper hairpin or the second jumper hairpin with a pitch of 6, CS4 represents the first jumper hairpin or the second jumper hairpin with a pitch of 4, and Z5 and Z7 represent reverse conductors with pitches of 5 and 7, respectively.
[0102] Table 7 Card issuing pitch of Example 8
[0103]
[0104] Example 9: Figures 29 to 32As shown, in this embodiment, the number of stator core slots is 48, the number of magnetic pole pairs p is 4, the pole pitch K=6, and the pitch Y of the U-shaped conductor is 5; the arrangement of the first coil ring 21, the second coil ring 22, the paired coils 2, the coil group 1, the first jumper hairpin 41, the second jumper hairpin 42 and the reverse conductor 5 are the same as those in Example 1. The main difference from Example 1 is that each flat wire phase winding includes four groups of concentrically arranged coil groups 1, and the legs of each group of the coil groups 1 are located on two adjacent layers of the phase winding. In the direction from the outside to the inside, the outermost coil group 1 occupies the first and second layers in the radial direction, the second outermost coil group 1 occupies the third and fourth layers in the radial direction, the second innermost coil group 1 occupies the fifth and sixth layers in the radial direction, and the innermost coil group 1 occupies the seventh and eighth layers in the radial direction. Figure 29 As shown, the four coil groups 1 on the three-phase flat wire phase winding form four concentric ring structures.
[0105] Located in the two adjacent coil groups 1 on the outermost side, that is, the outermost coil group 1 and the second outermost coil group 1, as shown in FIG. Figure 31 As shown, the pitch of the first cross-connection hairpin 41 connected between the two first position paired coils is 4, and the pitch of the second cross-connection hairpin 42 connected between the two first position paired coils is also 4. Figure 32 As shown, the pitch of the first cross-connect hairpin 41 connected between the two second position paired coils is 6, and the pitch of the second cross-connect hairpin 42 connected between the two second position paired coils is 6.
[0106] Located in the two adjacent coil groups 1 in the middle, that is, the coil group 1 of the second outer layer and the coil group 1 of the second inner layer, as shown in FIG. Figure 31 As shown, the pitch of the first cross-connection hairpin 41 connected between the two first position paired coils is 6, and the pitch of the second cross-connection hairpin 42 connected between the two first position paired coils is also 6. Figure 32 As shown, the pitch of the first cross-connect hairpin 41 connected between the two second position paired coils is 4, and the pitch of the second cross-connect hairpin 42 connected between the two second position paired coils is 4.
[0107] Located in the two adjacent innermost coil groups 1, that is, the second innermost coil group 1 and the innermost coil group 1, as shown in FIG. Figure 31 As shown, the pitch of the first cross-connection hairpin 41 connected between the two first position paired coils is 4, and the pitch of the second cross-connection hairpin 42 connected between the two first position paired coils is also 4. Figure 32 As shown, the pitch of the first cross-connect hairpin 41 connected between the two second position paired coils is 6, and the pitch of the second cross-connect hairpin 42 connected between the two second position paired coils is 6.
[0108] That is, in any two adjacent coil groups, in any two adjacent coil groups 1, the pitch of the first jumper hairpins 41 connected in series between the first coil loops 21 on the two first-position paired coils is equal to the pitch of the second jumper hairpins 42 connected in series between the second coil loops 22; and the pitch of the first jumper hairpins 41 connected in series between the first coil loops 21 on the two second-position paired coils is equal to the pitch of the second jumper hairpins 42 connected in series between the second coil loops 22. Furthermore, the sum of the pitches of the two first jumper hairpins 41 and the two second jumper hairpins 42 on the same layer is 10, that is, 2Y, Y = 5.
[0109] As shown in Table 8 below, in Table 8, the outer layer group represents the coil group 1 of the adjacent outermost layer and the second outermost layer; the middle layer group represents the coil group 1 of the adjacent second outer layer and the second inner layer; the inner layer group represents the coil group 1 of the adjacent second inner layer and the innermost layer; CL6 represents the first jumper hairpin or the second jumper hairpin with a pitch of 6, CS4 represents the first jumper hairpin or the second jumper hairpin with a pitch of 4, and Z6 represents the reverse conductor with a pitch of 6.
[0110] Table 8 Card issuing pitch of Example 9
[0111]
[0112] Example 10: This example has the same overall structure as Example 9. The main difference from Example 9 is that the pitch of all first cross-connect hairpins 41 and second cross-connect hairpins 42 is 5. Figure 33 and Figure 34 As shown, in any two adjacent coil groups, in any two adjacent coil groups 1, the pitch of the first crossover hairpins 41 connected in series between the first coil loops 21 on the two first-position paired coils is equal to the pitch of the second crossover hairpins 42 connected in series between the second coil loops 22; and the pitch of the first crossover hairpins 41 connected in series between the first coil loops 21 on the two second-position paired coils is equal to the pitch of the second crossover hairpins 42 connected in series between the second coil loops 22. Furthermore, the sum of the pitches of the two first crossover hairpins 41 and the two second crossover hairpins 42 on the same layer is 10, i.e., 2Y, where Y=5.
[0113] As shown in Table 9 below, in Table 9, the outer layer group represents the coil group 1 of the adjacent outermost layer and the second outermost layer; the middle layer group represents the coil group 1 of the adjacent second outer layer and the second inner layer; the inner layer group represents the coil group 1 of the adjacent second inner layer and the innermost layer; C5 represents the first jumper hairpin or the second jumper hairpin with a pitch of 5, CL6 represents the first jumper hairpin or the second jumper hairpin with a pitch of 6, CS4 represents the first jumper hairpin or the second jumper hairpin with a pitch of 4, and Z6 represents the reverse conductor with a pitch of 6.
[0114] Table 9 Card issuing pitch of embodiment 10
[0115]
[0116] Example 11: The overall structure of this embodiment, the first and second cross-hair clips in the two adjacent coil groups 1 located on the outermost side and the two adjacent coil groups 1 located in the middle are the same as those in Example 9. The main difference from Example 9 is that in the two adjacent coil groups 1 located on the innermost side, that is, the second inner coil group 1 and the innermost coil group 1, all the first cross-hair clips 41 and the second cross-hair clips 42 have a pitch of 5, as shown in FIG. Figure 35 and Figure 36 shown.
[0117] As shown in Table 10 below, in Table 10, the outer layer group represents the coil group 1 of the adjacent outermost layer and the second outermost layer; the middle layer group represents the coil group 1 of the adjacent second outer layer and the second inner layer; the inner layer group represents the coil group 1 of the adjacent second inner layer and the innermost layer; C5 represents the first jumper hairpin or the second jumper hairpin with a pitch of 5, CL6 represents the first jumper hairpin or the second jumper hairpin with a pitch of 6, CS4 represents the first jumper hairpin or the second jumper hairpin with a pitch of 4, and Z6 represents the reverse conductor with a pitch of 6.
[0118] Table 10 Card issuing pitch of Example 11
[0119]
[0120] Example 12: The overall structure of this embodiment, the first cross-connect hairpins and the second cross-connect hairpins in the two adjacent coil groups 1 on the outermost side are the same as those in Example 9. The main difference from Example 9 is that the pitch of all the first cross-connect hairpins 41 and the second cross-connect hairpins 42 in the two adjacent coil groups 1 in the middle and the two adjacent coil groups 1 on the innermost side is 5. Figure 37 and Figure 38 The specific card issuance span arrangement is shown in Table 11 below.
[0121] Table 11 Card issuing pitch of Example 12
[0122]
[0123]
[0124] Example 13: Figure 39 and Figure 40 As shown, the overall structure of this embodiment is the same as that of embodiment 9. The main difference from embodiment 9 is that in the two adjacent coil groups 1 located on the outermost side and the two adjacent coil groups 1 located on the innermost side, the pitch of all the first jumper hairpins 41 and the second jumper hairpins 42 is 5.
[0125] In the two adjacent coil groups 1 located in the middle, as shown in FIG. Figure 39 As shown, the pitch of the first cross-connection hairpin 41 connected between the two first position paired coils is 4, and the pitch of the second cross-connection hairpin 42 connected between the two first position paired coils is also 4. Figure 40 As shown, the pitch of the first crossover hairpin 41 connecting the two second position paired coils is 6, and the pitch of the second crossover hairpin 42 connecting the two second position paired coils is 6. The hairpin span arrangement of this embodiment is shown in Table 12 below.
[0126] Table 12 Card issuing pitch of Example 13
[0127]
[0128] Example 14: The overall structure of this embodiment, the first cross-connect hairpins and the second cross-connect hairpins in the two innermost adjacent coil groups 1 are the same as those in Example 9. The main difference from Example 9 is that the pitch of all the first cross-connect hairpins 41 and the second cross-connect hairpins 42 in the two outermost adjacent coil groups 1 and the two middle adjacent coil groups 1 is 5. Figure 41 and Figure 42 The specific card issuance span arrangement is shown in Table 13 below.
[0129] Table 13 Card issuing pitch of Example 14
[0130]
[0131] Example 15: The overall structure of this embodiment, the first jumper hairpins and the second jumper hairpins in the two adjacent coil groups 1 located on the outermost sides are the same as those in Example 9. The main difference from Example 9 is that in the two adjacent coil groups 1 located in the middle, the pitch of all the first jumper hairpins 41 and the second jumper hairpins 42 is 5.
[0132] Located in the innermost two adjacent coil groups 1, such as Figure 43 As shown, the pitch of the first cross-connection hairpin 41 connected between the two first position paired coils is 6, and the pitch of the second cross-connection hairpin 42 connected between the two first position paired coils is also 6. Figure 44 As shown, the pitch of the first crossover hairpin 41 connecting the two second position paired coils is 4, and the pitch of the second crossover hairpin 42 connecting the two second position paired coils is 4. The hairpin span arrangement of this embodiment is shown in Table 14 below.
[0133] Table 14 Card issuing pitch of Example 15
[0134]
[0135] Example 16: This example has the same overall structure as Example 9. The main difference from Example 9 is that in the two adjacent coil groups 1 located on the outermost sides, the pitch of all the first jumper hairpins 41 and the second jumper hairpins 42 is 5.
[0136] In the two adjacent coil groups 1 located in the middle, as Figure 45 As shown, the pitch of the first cross-connection hairpin 41 connected between the two first position paired coils is 4, and the pitch of the second cross-connection hairpin 42 connected between the two first position paired coils is also 4. Figure 46 As shown, the pitch of the first cross-connect hairpin 41 connected between the two second position paired coils is 6, and the pitch of the second cross-connect hairpin 42 connected between the two second position paired coils is 6.
[0137] Located in the innermost two adjacent coil groups 1, such as Figure 45 As shown, the pitch of the first cross-connection hairpin 41 connected between the two first position paired coils is 6, and the pitch of the second cross-connection hairpin 42 connected between the two first position paired coils is also 6. Figure 46 As shown, the pitch of the first crossover hairpin 41 connecting the two second position paired coils is 4, and the pitch of the second crossover hairpin 42 connecting the two second position paired coils is 4. The hairpin span arrangement of this embodiment is shown in Table 15 below.
[0138] Table 15 Card issuing pitch of Example 16
[0139]
[0140] Example 17: Figure 47 As shown, the overall structure of this embodiment is the same as that of embodiment 9, and the main difference from embodiment 9 is that:
[0141] Located in the two adjacent coil groups 1 on the outermost side, that is, the outermost coil group 1 and the second outermost coil group 1, as shown in FIG. Figure 48 As shown, the pitch of the first cross-connect hairpin 41 connecting the two first position paired coils is 4, and the pitch of the second cross-connect hairpin 42 connecting the two first position paired coils is 6. The sum of the two pitches is 4+6=10. Figure 49 As shown, the pitch of the first cross-connect hairpin 41 connected between the two second position paired coils is 6, the pitch of the second cross-connect hairpin 42 connected between the two second position paired coils is 4, and the sum of the two pitches is 6+4=10.
[0142] Located in the two adjacent coil groups 1 in the middle, that is, the coil group 1 of the second outer layer and the coil group 1 of the second inner layer, as shown in FIG. Figure 48As shown, the pitch of the first cross-connect hairpin 41 connecting the two first position paired coils is 6, and the pitch of the second cross-connect hairpin 42 connecting the two first position paired coils is 4. The sum of the two pitches is 6+4=10. Figure 49 As shown, the pitch of the first cross-connect hairpin 41 connected between the two second position paired coils is 4, the pitch of the second cross-connect hairpin 42 connected between the two second position paired coils is 6, and the sum of the two pitches is 4+6=10.
[0143] Located in the two adjacent innermost coil groups 1, that is, the second innermost coil group 1 and the innermost coil group 1, as shown in FIG. Figure 48 As shown, the pitch of the first cross-connect hairpin 41 connecting the two first position paired coils is 4, and the pitch of the second cross-connect hairpin 42 connecting the two first position paired coils is 6. The sum of the two pitches is 4+6=10. Figure 49 As shown, the pitch of the first cross-connect hairpin 41 connected between the two second position paired coils is 6, the pitch of the second cross-connect hairpin 42 connected between the two second position paired coils is 4, and the sum of the two pitches is 6+4=10.
[0144] That is, between any two adjacent pairs of coils in the first position on the coil assembly 1, the sum of the pitches of the first jumper hairpins 41 connected in series between the first coil loops 21 and the second jumper hairpins 42 connected in series between the second coil loops 22 is 2Y, where Y = 5. Between any two adjacent pairs of coils in the second position on the coil assembly 1, the sum of the pitches of the first jumper hairpins 41 connected in series between the first coil loops 21 and the second jumper hairpins 42 connected in series between the second coil loops 22 is 2Y, where Y = 5.
[0145] In this embodiment, the pole pitch K=6, as Figure 47 As shown, the pitch of the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the innermost first position paired coil is 5, i.e., K-1. The pitch of the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the innermost second position paired coil is 7, i.e., K+1. The sum of the pitches of the two reverse conductors 5 is 5+7=12, i.e., 2K. The hairpin span arrangement of this embodiment is shown in Table 16 below.
[0146] Table 16 Card issuing pitch of Example 17
[0147]
[0148] Example 18: Figure 50 and Figure 51As shown, this embodiment has the same overall structure as Example 17. The main difference from Example 17 is that the pitch of all first jumper hairpins 41 and second jumper hairpins 42 is 5. The pitch of the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the innermost first position paired coil is 7, i.e., K+1. The pitch of the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the innermost second position paired coil is 5, i.e., K-1. The sum of the pitches of the two reverse conductors 5 is 7+5=12, i.e., 2K, where K=6. The hairpin span arrangement of this embodiment is shown in Table 17 below.
[0149] Table 17 Card issuing pitch of Example 18
[0150]
[0151] Example 19: This example has the same overall structure as Example 17. The main difference from Example 17 is that:
[0152] Located in the two adjacent coil groups 1 on the outermost side, that is, the outermost coil group 1 and the second outermost coil group 1, as shown in FIG. Figure 52 As shown, the pitch of the first cross-connect hairpin 41 connecting the two first position paired coils is 4, and the pitch of the second cross-connect hairpin 42 connecting the two first position paired coils is 6. The sum of the two pitches is 4+6=10. Figure 53 As shown, the pitch of the first cross-connect hairpin 41 connected between the two second position paired coils is 6, the pitch of the second cross-connect hairpin 42 connected between the two second position paired coils is 4, and the sum of the two pitches is 6+4=10.
[0153] Located in the two adjacent coil groups 1 in the middle, that is, the coil group 1 of the second outer layer and the coil group 1 of the second inner layer, as shown in FIG. Figure 52 As shown, the pitch of the first cross-connect hairpin 41 connecting the two first position paired coils is 6, and the pitch of the second cross-connect hairpin 42 connecting the two first position paired coils is 4. The sum of the two pitches is 6+4=10. Figure 53 As shown, the pitch of the first cross-connect hairpin 41 connected between the two second position paired coils is 4, the pitch of the second cross-connect hairpin 42 connected between the two second position paired coils is 6, and the sum of the two pitches is 4+6=10.
[0154] In the two adjacent innermost coil groups 1, i.e., the second innermost coil group 1 and the innermost coil group 1, the pitch of all first cross-connect hairpins 41 and second cross-connect hairpins 42 is 5, and the sum of the two pitches is 5+5=10. Figure 52 and Figure 53 shown.
[0155] The pitch of the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the innermost first-position paired coil is 7, or K+1. The pitch of the reverse conductor 5 connected in series between the first coil loop 21 and the second coil loop 22 in the innermost second-position paired coil is 5, or K-1. The sum of the pitches of the two reverse conductors 5 is 7+5=12, or 2K, where K=6. The hairpin span arrangement of this embodiment is shown in Table 18 below.
[0156] Table 18 Card issuing pitch of Example 19
[0157]
[0158] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A flat wire winding motor with optimized jumper, comprising a stator assembly and a rotor assembly, wherein a phase winding is provided in the stator assembly, characterized in that: Each phase winding comprises at least two groups of concentrically arranged coil groups (1), the legs of each group of the coil groups (1) are located on two adjacent layers of the phase winding, and each group comprises at least two paired coils (2) arranged in sequence on circumferentially adjacent slots, the paired coils (2) comprising a first coil ring (21) and a second coil ring (22) arranged at a circumferentially offset magnetic pole position; the first coil ring (21) and the second coil ring (22) each comprise p-1 U-shaped conductors serially connected in sequence in the circumferential direction, the pitch of the U-shaped conductors being Y, the two U-shaped conductors serially connected being spaced apart by a magnetic pole position, and p being the number of magnetic pole pairs; In the two paired coils (2) at corresponding positions on two adjacent coil groups (1), a first cross-connection hairpin (41) is connected in series between the two first coil rings (21), and a second cross-connection hairpin (42) is connected in series between the two second coil rings (22), and the two legs of the first cross-connection hairpin (41) and the two legs of the second cross-connection hairpin (42) are both distributed in adjacent Nth and N+1th layers, where N is an even number; In the paired coils (2) on the innermost or outermost coil group (1), a reverse conductor (5) is connected in series between the first coil ring (21) and the second coil ring (22).
2. The flat wire winding motor with optimized jumper according to claim 1, characterized in that: Two paired coils (2) are sequentially arranged on circumferentially adjacent slots, namely, first-position paired coils and second-position paired coils; between two adjacent coil groups (1), the sum of the pitches of the first cross-connecting hairpins (41) connected in series between the first coil rings (21) on the two first-position paired coils and the first cross-connecting hairpins (41) connected in series between the first coil rings (21) on the two second-position paired coils is 2Y; the sum of the pitches of the second cross-connecting hairpins (42) connected in series between the second coil rings (22) on the two first-position paired coils and the second cross-connecting hairpins (42) connected in series between the second coil rings (22) on the two second-position paired coils is 2Y.
3. The flat wire winding motor with optimized jumper according to claim 2, characterized in that: The sum of the pitches of the reverse conductor (5) connected in series between the first coil ring (21) and the second coil ring (22) in the first position paired coil and the reverse conductor (5) connected in series between the first coil ring (21) and the second coil ring (22) in the second position paired coil is 2K, where K is the pole pitch.
4. The flat wire winding motor with optimized jumper according to claim 2, characterized in that: Between the two first-position paired coils on two adjacent groups of coil assemblies (1), the pitch of the first jumper hairpin (41) connected in series between the first coil loops (21) is equal to the pitch of the second jumper hairpin (42) connected in series between the second coil loops (22); the pitch of the reverse conductor (5) connected in series between the first coil loop (21) and the second coil loop (22) in the innermost or outermost layer of the first-position paired coils is K, where K is the pole pitch; Between the two second-position paired coils on two adjacent groups of coil assemblies (1), the pitch of the first jumper hairpins (41) connected in series between the first coil loops (21) is equal to the pitch of the second jumper hairpins (42) connected in series between the second coil loops (22); the pitch of the reverse conductor (5) connected in series between the first coil loop (21) and the second coil loop (22) in the innermost or outermost layer of the second-position paired coils is K, where K is the pole pitch.
5. The flat wire winding motor with optimized jumper as claimed in claim 2, characterized in that: Between the two first-position paired coils on two adjacent groups of coil assemblies (1), the sum of the pitches of the first jumper hairpin (41) connected in series between the first coil rings (21) and the second jumper hairpin (42) connected in series between the second coil rings (22) is 2Y; between the two second-position paired coils on two adjacent groups of coil assemblies (1), the sum of the pitches of the first jumper hairpin (41) connected in series between the first coil rings (21) and the second jumper hairpin (42) connected in series between the second coil rings (22) is 2Y; the pitches of the two reverse conductors (5) are K+1 and K-1 respectively, where K is the pole pitch.
6. The flat wire winding motor with optimized jumper according to claim 1, characterized in that: The reverse conductor (5) comprises two first S-shaped conductors (51) with the same twisting direction and both located in the innermost layer or the outermost layer, the first S-shaped conductor comprising a slot interior (61) for passing through the stator core slot, and a welding end (62) and a plug-in end (63) twisted in opposite directions and arranged at both ends of the slot interior (61); a jumper conductor (52) is connected in series between the plug-in ends (63) of the two first S-shaped conductors.
7. The flat wire winding motor with optimized jumper according to claim 1, characterized in that: The reverse conductor (5) is a U-shaped conductor with both legs located in the outermost layer or the innermost layer. The U-shaped conductor comprises two slot interiors (61) for passing through the stator core slots, and welding ends (62) and plug-in ends (63) twisted in opposite directions at both ends of the corresponding slot interiors (61); the plug-in ends (63) of the two slot interiors (61) twist in the same direction and are connected by an integrally formed conductor.
8. The flat wire winding motor with optimized jumper according to claim 1, characterized in that: The other ends of all the first coil rings (21) and second coil rings (22) on the coil group (1) located in the outermost layer or the innermost layer are connected to a second S-shaped conductor, and the second S-shaped conductor includes a slot interior (61) penetrating the iron core slot, and a welding end (62) and a wire end (63) twisted in opposite directions at both ends of the slot interior (61); the twisting direction of the welding ends (62) of all the second S-shaped conductors is the same.
9. The flat wire winding motor with optimized jumper according to claim 8, characterized in that: It also includes a star point connection conductor (3) arranged in an arc shape along the circumferential direction, wherein the star point connection conductor (3) is connected to the second S-shaped conductors on all the first coil rings (21) or the second coil rings (22), and is connected to the plug-in end (63) of the second S-shaped conductor.