Rotary electric machine

Abstract

To achieve a rotary electric machine having a simple structure with good workability in which a bus bar is incorporated.SOLUTION: In a rotary electric machine, a coil is wound around a stator slot. A crossover plate is disposed on an axially outer side of a coil end. The crossover plate includes a plurality of bus bar rows in which a plurality of bus bars are arranged in a row in a circumferential direction. The bus bars of different phases are disposed in all of the bus bar rows.SELECTED DRAWING: Figure 12C

Description

[Technical Field]

[0001] The present invention relates to a rotating electric machine such as a motor, and more particularly to a rotating electric machine used in industrial machinery. [Background technology]

[0002] A rotating electric machine has been developed that uses segment coils with flat cross sections in the conductor to increase the winding space factor of the stator, resulting in high power density and compactness. In this rotating electric machine, the divided segment coils are fitted into multiple coil insertion holes formed in bobbins provided in the stator slots, achieving further miniaturization, high productivity, and low cost.

[0003] Patent Document 1 describes a structure in which a plurality of types of crossover wires having bent portions are assembled in order using a joining material in order to avoid interference between the crossover wires. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-124662 Summary of the Invention [Problem to be solved by the invention]

[0005] Crossover wires with bent sections require a process for bending the crossover wires, which increases costs. Also, the process of assembling multiple types of crossover wires in order using joining materials is inefficient.

[0006] An object of the present invention is to connect, for example, concentrically wound coils in a concentrically wound rotating electric machine with a simple structure incorporating a bus bar and offering good workability. [Means for solving the problem]

[0007] An example of a means for solving the above problem is as follows.

[0008] A rotating electric machine in which a coil is wound around a stator slot, a jumper plate is arranged axially outward of a coil end, the jumper plate has a plurality of bus bar rows in which a plurality of bus bars are arranged in rows in the circumferential direction, and out-of-phase bus bars are arranged in all of the bus bar rows. [Effects of the Invention]

[0009] According to the present invention, it is possible to realize a rotating electric machine with a simple structure that is easy to work with and that incorporates bus bars. Further means and effects of the present invention will become apparent throughout the entire specification below. [Brief explanation of the drawings]

[0010] [Figure 1A] 1 is a perspective view of a rotating electric machine 100 according to a first embodiment. [Figure 1B] 1 is a radial cross-sectional view of a rotating electric machine 100. FIG. [Figure 2A] FIG. 2 is an oblique view of a U-phase convex segment coil 11. [Figure 2B] FIG. 2 is an oblique view of a U-phase recessed segment coil 12. [Figure 2C] FIG. [Figure 2D] FIG. 2 is a perspective view of a U-phase coil 13. [Figure 3] FIG. 2 is a perspective view of the bobbin 20. [Figure 4] FIG. 2 is a perspective view of the stator 7 with only the U-phase coil 13 inserted therein. [Figure 5A] FIG. 2 is an oblique view of a V-phase convex segment coil 14. [Figure 5B] FIG. 2 is a perspective view of a V-phase recessed segment coil 15. [Figure 5C] FIG. 2 is a perspective view of a V-phase coil 16. [Figure 6A] FIG. 1 is an oblique view of a W-phase convex segment coil 17. [Figure 6B] FIG. 2 is an oblique view of a W-phase recessed segment coil 18. [Figure 6C] FIG. 2 is a perspective view of a W-phase coil 19. [Figure 7] FIG. [Figure 8A] This is a circuit diagram showing a 4-series, 2-parallel delta connection method. [Figure 8B] This is a circuit diagram showing a 4-series, 2-parallel delta connection method. [Figure 9A] FIG. 2 is a perspective view showing a first bus bar 30. [Figure 9B] FIG. 2 is a perspective view showing a second bus bar 31. [Figure 9C] FIG. 2 is a perspective view showing an insulating plate 22. [Figure 10A] 10 is a top view showing a first-stage crossover plate 35 that connects U-phase coils 13 in four series and two parallel configurations. [Figure 10B] 10 is a top view showing a second-stage crossover plate 36 that connects U-phase coils 13 in four series and two parallel configurations. [Figure 10C] 10 is a perspective view showing the process of assembling a first-stage crossover plate 35 and a second-stage crossover plate 36, which connect four U-phase coils 13 in series and two in parallel, to a stator 7 into which only U-phase coils 13 have been inserted. [Figure 10D] 1 is a perspective view showing a state in which a first-stage crossover plate 35 and a second-stage crossover plate 36, which connect four U-phase coils 13 in series and two in parallel, are assembled to a stator 7 into which only a U-phase coil 13 has been inserted. [Figure 11A] FIG. 2 is a perspective view of the stator 7 with only the V-phase coil 16 inserted therein. [Figure 11B] FIG. 2 is a perspective view of the stator 7 with only the W-phase coil 19 inserted therein. [Figure 12A] FIG. 10 is a top view showing a first-stage crossover plate 37 that connects coils of each phase in four series and two parallel configurations. [Figure 12B] FIG. 10 is a top view showing a second-stage crossover plate 38 that connects the coils of each phase in a four-in-series, two-in-parallel configuration. [Figure 12C] 10 is a perspective view showing the process of assembling a first-stage crossover plate 37 and a second-stage crossover plate 38, which connect the coils of each phase in four series and two parallel configurations, to the stator 7. FIG. [Figure 12D] FIG. 10 is a perspective view showing a state in which a first-stage crossover plate 37 and a second-stage crossover plate 38, which connect the coils of each phase in four series and two parallel configurations, are assembled to a stator 7. [Figure 13A] FIG. 2 is a perspective view showing a third bus bar 32. [Figure 13B] FIG. 2 is a perspective view showing a fourth bus bar 33. [Figure 13C] FIG. 2 is a perspective view showing a first-stage insulating plate 23. [Figure 14A] FIG. 10 is a top view showing a crossover plate 39 that connects the coils of each phase in four series and two parallel configurations. [Figure 14B] 10 is a perspective view showing the process of assembling a crossover plate 39, which connects coils of each phase in four series and two parallel configurations, to a stator 7. FIG. [Figure 14C] 10 is a perspective view showing a state in which a crossover plate 39 connecting coils of each phase in four series and two parallel configurations is assembled to a stator 7. FIG. [Figure 15A] FIG. 6 is a top view showing a crossover plate 60 that connects coils of each phase in four series and two parallel configurations. [Figure 15B] FIG. 6 is a top view showing a crossover plate 61 that connects coils of each phase in four series and two parallel configurations. [Figure 15C] 10 is a perspective view showing the process of assembling crossover plates 60 and 61, which connect the coils of each phase in four series and two parallel configurations, to a stator 7. FIG. [Figure 15D] FIG. 10 is a perspective view showing a state in which crossover plates 60 and 61, which connect coils of each phase in four series and two parallel configurations, are assembled to a stator 7. [Figure 16A] 10 is a perspective view showing a first external power supply wiring bus bar 62. FIG. [Figure 16B] FIG. 10 is a perspective view showing a second external power supply wiring bus bar 63. [Figure 16C] FIG. 10 is a perspective view showing an insulating plate 64 for external power supply wiring. [Figure 17A] FIG. 6 is a top view showing an external power supply wiring board 66 that connects the coils of each phase to an external power supply. [Figure 17B] 10 is a perspective view showing an external power supply wiring board 66 that connects coils of each phase to an external power supply, in the process of being assembled to the stator 7. FIG. [Figure 17C] 10 is a perspective view showing a state in which an external power supply wiring board 66 that connects coils of each phase to an external power supply is assembled to a stator 7. FIG. [Figure 18A] FIG. 10 is a partially enlarged top view of a first-stage crossover plate 37 that connects the coils of each phase in a four-phase series and two-phase parallel configuration. [Figure 18B] FIG. 10 is a partially enlarged top view of a first-stage crossover plate 37 that connects four coils of each phase in series and two in parallel, to which an insulator 67 has been added. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings as needed.

[0012] Although the embodiments are directed to an internal rotor type rotating electric machine as an example, an external rotor type rotating electric machine may also be used. The coil is, for example, a concentric distributed winding, and is configured by fitting divided segment coils into multiple coil insertion holes formed in a bobbin provided in the slots of the stator. The rotor may be an embedded magnet type rotor formed by inserting magnets into a rotor core having multiple magnet insertion holes, or a surface magnet type rotor formed by attaching magnets to the surface of the rotor core. Furthermore, magnet-less induction motors, synchronous reluctance motors, and switched reluctance motors may also be used. [Example]

[0013] FIG. 1A is a perspective view of a rotating electric machine 100, and FIG. 1B is a radial cross-sectional view of the rotating electric machine 100. As shown in FIG.

[0014] The rotating electric machine 100 includes a rotor 3 composed of a rotor core (rotor iron core) 1 and a permanent magnet 2, and a stator 7 arranged with a predetermined gap on the outer diameter side of the rotor 3 and composed of a stator core (stator iron core) 4 and a coil 5. The rotor 3 is arranged to be rotatable around a rotation axis 90 as its central axis.

[0015] Fig. 2A is a perspective view of U-phase convex segment coil 11. Fig. 2B is a perspective view of U-phase concave segment coil 12. Fig. 2C is a perspective view of lead wire 6 in the convex U-phase configuration. Fig. 2D is a perspective view of U-phase coil 13.

[0016] 3 is a perspective view of the bobbin 20. The bobbin 20 has a plurality of coil insertion holes 21 extending in the axial direction.

[0017] The U-phase coil 13 is constructed by fitting a U-phase convex segment coil 11, a U-phase concave segment coil 12, and a lead wire 6 into multiple coil insertion holes 21 formed in a bobbin 20 provided in a slot of the stator core 4.

[0018] 4 is a perspective view of the stator 7 with only the U-phase coil 13 inserted. The U-phase coil 13 is inserted across five teeth 9. Furthermore, eight U-phase coils 13 are inserted at positions shifted by 45° from each other.

[0019] Fig. 5A is a perspective view of the V-phase convex segment coil 14. Fig. 5B is a perspective view of the V-phase concave segment coil 15. Fig. 5C is a perspective view of the V-phase coil 16. The V-phase convex segment coil 14 and the V-phase concave segment coil 15 have different shapes from the U-phase convex segment coil 11 and the U-phase concave segment coil 12 to avoid interference at the coil end portions.

[0020] The V-phase coil 16 is constructed by fitting a V-phase convex segment coil 14, a V-phase concave segment coil 15, and a lead wire 6 into multiple coil insertion holes 21 formed in a bobbin 20 provided in a slot of the stator core 4.

[0021] Figure 6A is a perspective view of the W-phase convex segment coil 17. Figure 6B is a perspective view of the W-phase concave segment coil 18. Figure 6C is a perspective view of the W-phase coil 19. The W-phase convex segment coil 17 and the W-phase concave segment coil 18 have different shapes from the U-phase convex segment coil 11, the U-phase concave segment coil 12, the V-phase convex segment coil 14, and the V-phase concave segment coil 15 to avoid interference at the coil end portions.

[0022] The W-phase coil 19 is constructed by fitting a W-phase convex segment coil 17, a V-phase concave segment coil 15, and a lead wire 6 into multiple coil insertion holes 21 formed in a bobbin 20 provided in a slot of the stator core 4.

[0023] 7 is a perspective view of stator 7 into which U-phase coil 13, V-phase coil 16, and W-phase coil 19 are inserted. V-phase coil 16 and W-phase coil 19 are inserted across five teeth 9. Eight V-phase coils 16 and eight W-phase coils 19 are inserted at positions offset by 45° from each other. V-phase coil 16 is inserted at a position offset by 15° from U-phase coil 13, and W-phase coil 19 is inserted at a position offset by 15° from V-phase coil 16.

[0024] 8A and 8B are circuit diagrams showing a 4-series, 2-parallel delta connection method. Each coil is connected in series by a bus bar.

[0025] Fig. 9A is a perspective view showing the first bus bar 30. Fig. 9B is a perspective view showing the second bus bar 31. The first bus bar 30 and the second bus bar 31 have lead wire insertion holes 34. By inserting the lead wires 6 of the coil 5 into the lead wire insertion holes 34, the coil 5 and the first bus bar 30 and the second bus bar 31 are electrically connected to each other.

[0026] 9C is a perspective view showing insulating plate 22. Insulating plate 22 has first lanes 24 on the outside and second lanes 25 on the inside. First bus bars 30 are shaped to fit within first lane 24, and multiple bus bars can be arranged in a row in the circumferential direction. Second bus bars 31 are shaped to fit within second lane 25, and multiple bus bars can be arranged in a row in the circumferential direction.

[0027] FIG. 10A is a top view showing a first-stage jumper plate 35 that connects four U-phase coils in a series-and-two parallel configuration. FIG. 10B is a top view showing a second-stage jumper plate 36 that connects four U-phase coils in a series-and-two parallel configuration. The first-stage jumper plate 35 has two first bus bars 30 arranged in the first lane 24. One is a U1-phase bus bar 40 that connects the U1-phase coils 50 in series, and the other is a U2-phase bus bar 41 that connects the U2-phase coils 51 in series. The first-stage jumper plate 35 has one second bus bar 31 arranged in the second lane 25, which is a U1-phase bus bar 40 that connects the U1-phase coils 50 in series. The second-stage jumper plate 36 has two first bus bars 30 arranged in the first lane 24. One is a U1-phase bus bar 40 that connects U1-phase coils 50 in series, and the other is a U2-phase bus bar 41 that connects U2-phase coils 51 in series. On the second-stage jumper board 36, one second bus bar 31 is arranged in the second lane 25, and this is a U2-phase bus bar that connects U2-phase coils 51 in series. As described above, the U1-phase bus bars 40 and U2-phase bus bars 41 that connect U1-phase coils 50 and U2-phase coils 51 in series are arranged in a distributed manner in the first lane 24 and the second lane 25 of the first-stage jumper board 35 and the second-stage jumper board 36.

[0028] FIG. 10C is a perspective view showing the process of assembling crossover wire plate 35 and second-stage crossover wire plate 36 to stator 7 into which only U-phase coil 13 has been inserted. As shown in FIG. 10C, wiring is completed by inserting lead wires 6 into first-stage crossover wire plate 35 and second-stage crossover wire plate 36, so this structure is easy to work with. FIG. 10D is a perspective view showing the state in which first-stage crossover wire plate and second-stage crossover wire plate have been assembled to stator 7 into which only U-phase coil 13 has been inserted. U1-phase coil 50 and U2-phase coil 51 are each connected in four series by first-stage crossover wire plate and second-stage crossover wire plate, forming a four-series, two-parallel circuit.

[0029] Fig. 11A is a perspective view of stator 7 with only V-phase coil 16 inserted. V1-phase coil 52 and V2-phase coil 53 are arranged as shown in Fig. 11A.

[0030] 11B is a perspective view of the stator 7 with only the W-phase coil 19 inserted. The W1-phase coil 54 and the W2-phase coil 55 are arranged as shown in FIG.

[0031] 12A is a top view of a first-stage jumper plate 37 that connects four coils of each phase in a series / two-parallel configuration. FIG. 12B is a top view of a second-stage jumper plate 38 that connects four coils of each phase in a series / two-parallel configuration. Similar to the U1-phase coil 50 and U2-phase coil 51, V1-phase bus bars 42, V2-phase bus bars 43, W1-phase bus bars 44, and W2-phase bus bars 45 that connect the V1-phase coil 52, V2-phase coil 53, W1-phase coil 54, and W2-phase coil 55 in series, respectively, are distributed across the first lane 24 and the second lane 25 of the first-stage jumper plate 37 and the second-stage jumper plate 38. Furthermore, bus bars of different phases are mixed in the first lane 24 and the second lane 25 of the first-stage jumper plate 37 and the second-stage jumper plate 38.

[0032] FIG. 12C is a perspective view showing the first-stage jumper wire plate 37 and the second-stage jumper wire plate 38 being assembled to the stator 7. Wiring is completed by inserting the lead wires 6 into the lead wire insertion holes 34 of the bus bars incorporated into the first-stage jumper wire plate 37 and the second-stage jumper wire plate 38, resulting in excellent workability. FIG. 12D is a perspective view showing the first-stage jumper wire plate 37 and the second-stage jumper wire plate 38 assembled to the stator 7. The first-stage jumper wire plate 37 and the second-stage jumper wire plate 38 connect four U1-phase coils 50, U2-phase coils 51, V1-phase coils 52, V2-phase coils 53, W1-phase coils 54, and W2-phase coils 55 in series, forming a four-in-series, two-in-parallel circuit. This configuration allows wiring to be performed without interference between bus bars of different phases. This allows for a rotating electric machine with a simple structure that incorporates bus bars and is easy to work with. In particular, when flat bus bars are used, a rotating electric machine with a simple structure and good workability can be realized. [Example]

[0033] A second embodiment of the present invention will be described with reference to FIGS. 13A to 14C.

[0034] Fig. 13A is a perspective view showing the third bus bar 32. Fig. 13B is a perspective view showing the fourth bus bar 33. The third bus bar 32 and the fourth bus bar 33 have lead wire insertion holes 34. By inserting the lead wires 6 of the coil 5 into the lead wire insertion holes 34, the coil 5 and the third bus bar 32 and the fourth bus bar 33 are electrically connected to each other.

[0035] FIG. 13C is a perspective view showing first-stage insulating plate 23. First-stage insulating plate 23 has, in order from the outside, third lane 26, first lane 24, second lane 25, and fourth lane 27. Third bus bar 32 is shaped to fit within third lane 26, and multiple third bus bars 32 can be arranged in a row in the circumferential direction. First bus bars 30 are shaped to fit within first lane 24, and multiple first bus bars 30 can be arranged in a row in the circumferential direction. Second bus bars 31 are shaped to fit within second lane 25, and multiple second bus bars 31 can be arranged in a row in the circumferential direction. Fourth bus bars 33 are shaped to fit within fourth lane 27, and multiple fourth bus bars 33 can be arranged in a row in the circumferential direction.

[0036] 14A is a top view showing a crossover plate 39 that connects four coils of each phase in a series and two in parallel configuration. U1-phase bus bars 40, U2-phase bus bars 41, V1-phase bus bars 42, V2-phase bus bars 43, W1-phase bus bars 44, and W2-phase bus bars 45 that connect U1-phase coil 50, U2-phase coil 51, V1-phase coil 52, V2-phase coil 53, W1-phase coil 54, and W2-phase coil 55 in series, respectively, are distributed over third lane 26, first lane 24, second lane 25, and fourth lane 27. In addition, bus bars of different phases are mixed in third lane 26, first lane 24, second lane 25, and fourth lane 27.

[0037] FIG. 14B is a perspective view showing the process of assembling jumper plate 39 to stator 7. This structure is easy to work with because connection is completed by inserting lead wires 6 into lead wire insertion holes 34 of the bus bars incorporated in jumper plate 39. FIG. 14C is a perspective view showing the state after jumper plate 39 has been assembled to stator 7. Jumper plate 39 connects four U1-phase coils 50, U2-phase coils 51, V1-phase coils 52, V2-phase coils 53, W1-phase coils 54, and W2-phase coils 55 in series, forming a four-in-series, two-in-parallel circuit. This configuration allows connection without interference between bus bars of different phases.

[0038] The second embodiment, which is configured with one stage of jumper plate 39, is configured with two stages of jumper plates 37 and 39. Compared to the first embodiment, the axial length can be shortened, but the jumper plates are larger on the inner and outer diameter sides. It is advisable to use either the first embodiment or the second embodiment depending on the shape of the components around the motor (such as the housing). [Example]

[0039] A third embodiment of the present invention will be described with reference to FIGS. 15A to 15D.

[0040] Fig. 15A is a top view of a jumper plate 60 that connects four coils of each phase in a series-two parallel configuration. Fig. 15B is a top view of a jumper plate 61 that connects four coils of each phase in a series-two parallel configuration. U1-phase bus bars 40, U2-phase bus bars 41, V1-phase bus bars 42, V2-phase bus bars 43, W1-phase bus bars 44, and W2-phase bus bars 45 that connect U1-phase coil 50, U2-phase coil 51, V1-phase coil 52, V2-phase coil 53, W1-phase coil 54, and W2-phase coil 55 in series, respectively, are distributed over the first lane 24 and the second lane 25 of the jumper plate 60 and the jumper plate 61. Bus bars of different phases are also mounted in the first lane 24 and the second lane 25 of the jumper plate 60 and the jumper plate 61.

[0041] FIG. 15C is a perspective view showing the process of assembling the jumper wire plates 60 and 61 to the stator 7. The lead wires 6 extend from both axial ends of the motor. The lead wires 6 on one end are inserted into the lead wire insertion holes 34 of the jumper wire plate 60, and the lead wires 6 on the other end are inserted into the lead wire insertion holes 34 of the jumper wire plate 61, completing the wiring connection. Arranging the jumper wire plates on both ends of the motor is suitable for cases where space can be effectively utilized. FIG. 15D is a perspective view showing the jumper wire plates 60 and 61 assembled to the stator 7. The jumper wire plates 60 and 61 connect the U1-phase coil 50, U2-phase coil 51, V1-phase coil 52, V2-phase coil 53, W1-phase coil 54, and W2-phase coil 55 in four-series configurations, forming a four-series, two-parallel circuit. This configuration allows wiring to be connected without interference between bus bars of different phases. [Example]

[0042] A fourth embodiment of the present invention will be described with reference to Figures 16A to 17C. Figure 16A is a perspective view of a first external power supply wiring bus bar 62. Figure 16B is a perspective view of a second external power supply wiring bus bar 63. The first external power supply wiring bus bar 62 and the second external power supply wiring bus bar 63 have lead wire insertion holes 34. By inserting the lead wires 6 of the coil 5 into the lead wire insertion holes 34, the coil 5 is electrically connected to the first external power supply wiring bus bar 62 and the second external power supply wiring bus bar 63. The first external power supply wiring bus bar 62 and the second external power supply wiring bus bar 63 have external power supply wiring attachment positions 65. By attaching electric wires connected to an external power source to these positions, electricity can be supplied from the outside. Possible methods for connecting the electric wires include soldering or drilling holes and fastening with screws. Figure 16C is a perspective view of an external power supply wiring insulating plate 64.

[0043] Fig. 17A is a top view showing an external power supply wiring board 66 that connects the coils of each phase to an external power supply. The external power supply wiring board 66 is configured by arranging a first external power supply wiring bus bar 62 and a second external power supply wiring bus bar 63 on an external power supply wiring insulating plate 64. The first external power supply wiring bus bar 62 and the second external power supply wiring bus bar are arranged so that the external power supply wiring attachment positions 65 are concentrated together. In Fig. 17A, six external power supply wiring attachment positions 65 are concentrated together.

[0044] FIG. 17B is a perspective view showing an external power supply wiring board 66 in the middle of being assembled into the configuration of Example 1 (stator 7 with jumper wire plates 37 and 38 attached). This structure is easy to work with because wiring is completed by inserting lead wires 6 into lead wire insertion holes 34 of the bus bars incorporated into the external power supply wiring board 66. FIG. 17C is a perspective view showing the external power supply wiring board 66 in a state assembled into the configuration of Example 1. The first external power supply wiring bus bar 62 and the second external power supply wiring bus bar 63 consolidate external power supply wiring attachment positions 65, thereby improving the winding of the wires connected to the external power source.

[0045] In the fourth embodiment, the external power supply wiring board 66 is attached to the configuration of the first embodiment, but it may also be attached to the configuration of the second or third embodiment. [Example]

[0046] A fourth embodiment of the present invention will be described with reference to FIGS. 18A and 18B.

[0047] FIG. 18A is a top view of an enlarged portion of the first-stage jumper plate 37, which connects four coils in series and two in parallel for each phase. Although there is a circumferential insulation distance between the bus bars, there is a risk of short-circuiting when high voltage is applied. To prevent short-circuiting, FIG. 18B shows insulators 67 added between the bus bars in FIG. 18A. While the insulators 67 may be added during molding of the insulating plate 23, adding them after the bus bars are assembled allows for more flexible bus bar layout, allows the insulating plate 23 to be used in multiple configurations, and reduces costs. Adding the insulators 67 later can be done by gluing or molding them.

[0048] The above examples illustrate the ideas and concepts of the present invention. Of course, the scope of the present invention also includes examples that are realized by combining the examples. Furthermore, as long as the disclosed ideas and concepts are used, any modifications or similar examples are also included within the scope of the present invention.

[0049] Although the above-described embodiments have been described using an inner rotor type rotating electric machine as an example, the technical concept of the present invention is not limited to the inner rotor type, but also includes application to an outer rotor type.

[0050] Furthermore, although there are no limitations on the winding shape of each coil, there is an advantage that, particularly when applied to rectangular wire, a rotating electric machine with a simple structure and good workability can be realized.

[0051] Furthermore, one example of the present invention described using the above embodiments can also be expressed as follows.

[0052] <Part 1> A rotating electric machine in which a coil is wound around a stator slot, a jumper plate is arranged axially outward of a coil end, the jumper plate has a plurality of bus bar rows in which a plurality of bus bars are arranged in rows in the circumferential direction, and out-of-phase bus bars are arranged in all of the bus bar rows.

[0053] <Part 2> <Item 1> The rotating electric machine according to the present invention, wherein the coil is a concentrically wound coil.

[0054] <Part 3> <Item 2> The rotating electric machine according to the above, wherein three-phase bus bars are arranged in at least one bus bar row among the plurality of bus bar rows.

[0055] <Part 4> In the rotating electric machine described in <Item 3>, the plurality of bus bar rows include rows with a large number of bus bars and rows with a small number of bus bars, and three-phase bus bars are arranged in the rows with a large number of bus bars.

[0056] <Part 5> <No. 4> A rotating electric machine having four bus bar rows, in which two of the four bus bar rows (A) have three-phase bus bars arranged in each row, and the remaining two bus bar rows (B) have two or more phase bus bars arranged in each row.

[0057] <Part 6> <Item 5> The rotating electric machine according to the present invention is a rotating electric machine comprising two jumper wire plates each having a double bus bar row, in which three-phase bus bars are arranged in the outer bus bar row of each jumper wire plate and two or more phase bus bars are arranged in the inner bus bar row of each jumper wire plate.

[0058] <Part 7> <Item 5> The rotating electric machine described in this specification is a rotating electric machine comprising one crossover plate having four bus bar rows, in which three-phase bus bars are arranged in each row of the outer two bus bar rows (A) of the four rows, and two or more phase bus bars are arranged in the inner two bus bar rows (B) of the four rows.

[0059] <Part 8> In the rotating electric machine described in <Item 5>, the two crossover plates are arranged one on each side of the coil end axially outside.

[0060] <No. 9> <1> to <8>, a rotating electric machine according to any one of <1> to <8>, wherein an external power supply wiring board is arranged axially outward of the coil end, the external power supply wiring board has a plurality of bus bars, one end of each bus bar is connected to the coil and the other end is connected to electric wires leading to an external power supply, and the bus bars are shaped so that connection positions of the electric wires are close to each other.

[0061] <Part 10> <Item 9> The rotating electric machine according to the present invention, characterized in that an insulator is inserted between the bus bars.

[0062] <Part 11> The rotating electric machine according to any one of <Item 1> to <Item 8>, wherein an insulator is inserted between the bus bars.

[0063] <Part 12> The rotating electric machine according to any one of <Item 1> to <Item 8>, wherein the rotating electric machine is an inner rotor type rotating electric machine.

[0064] <Part 13> <Item 9> The rotating electric machine according to the present invention is an inner rotor type rotating electric machine.

[0065] <Part 14> <Item 10> The rotating electric machine according to the present invention, wherein the rotating electric machine is an inner rotor type.

[0066] <Part 15> <Item 11> The rotating electric machine according to the present invention, wherein the rotating electric machine is an inner rotor type. [Explanation of symbols]

[0067] 1: Rotor core 2: Permanent magnet 3: Rotor 4: Stator core 5: Coil 6: Lead line 7: Stator 8: Shaft 9: Teeth 10: Coreback 11: U-phase convex segment coil 12: U-phase concave segment coil 13: U-phase coil 14: V-phase convex segment coil 15: V-phase recessed segment coil 16: V-phase coil 17: W-phase convex segment coil 18: W-phase concave segment coil 19: W-phase coil 20: Bobbin 21: Coil insertion hole 22: Insulating plate 23:1 stage insulating plate 24: Lane 1 25: Second lane 26: Third lane 27: Lane 4 30: First bus bar 31: Second bus bar 32: 3rd bus bar 33: 4th bus bar 34: Lead wire insertion hole 35: First-stage crossover plate connecting U-phase coils in four series and two parallel configurations 36: Second-stage crossover plate connecting U-phase coils in four series and two parallel configurations 37: The first stage crossover plate that connects the coils of each phase in four series and two parallel configurations 38: The second-stage crossover plate that connects the coils of each phase in four series and two parallel configurations 39: Crossover plate connecting the coils of each phase in 4 series and 2 parallel configurations 40: U1 phase busbar 41: U2 phase busbar 42: V1 phase busbar 43: V2 phase busbar 44: W1 phase busbar 45: W2 phase bus bar 50: U1 phase coil 51: U2 phase coil 52: V1 phase coil 53: V2 phase coil 54: W1 phase coil 55: W2 phase coil 60: Crossover wire plate connecting the coils of each phase in 4 series and 2 parallel configurations 61: Crossover plate connecting the coils of each phase in 4 series and 2 parallel configurations 62: First external power supply wiring bus bar 62 63: Second external power supply wiring bus bar 63 64: Insulating board for external power supply wiring 65: External power supply wiring installation position 66: External power supply wiring board 67: Insulator 90: Rotation axis 100: Rotating electric machine

Claims

1. A rotating electric machine in which a coil is wound around a stator slot, a jumper plate is arranged axially outward of a coil end, the jumper plate has a plurality of bus bar rows in which a plurality of bus bars are arranged in rows in the circumferential direction, and out-of-phase bus bars are arranged in all of the bus bar rows.

2. 2. The rotating electrical machine according to claim 1, wherein said coil is a concentrically wound coil.

3. 3. The rotating electric machine according to claim 2, wherein three-phase bus bars are arranged in at least one bus bar row of said plurality of bus bar rows.

4. 4. The rotating electric machine according to claim 3, wherein the plurality of bus bar rows include rows with a large number of bus bars and rows with a small number of bus bars, and three-phase bus bars are arranged in the rows with a large number of bus bars.

5. 5. The rotating electric machine according to claim 4, comprising four bus bar arrays, wherein two of the four bus bar arrays (A) have three-phase bus bars arranged in each row, and the remaining two bus bar arrays (B) have two or more phase bus bars arranged in each row.

6. 6. The rotating electric machine according to claim 5, further comprising two jumper wire plates each having a double bus bar row, wherein three-phase bus bars are arranged in the outer bus bar row of each jumper wire plate, and two or more phase bus bars are arranged in the inner bus bar row of each jumper wire plate.

7. 6. The rotating electric machine according to claim 5, further comprising one jumper plate having four bus bar rows, wherein three-phase bus bars are arranged in each row of the outer two bus bar rows (A) of the four bus bar rows, and two or more phase bus bars are arranged in each row of the inner two bus bar rows (B) of the four bus bar rows.

8. 6. The rotating electric machine according to claim 5, wherein the two crossover plates are arranged one on each side of the coil end axially outside.

9. 9. A rotating electric machine according to claim 1, further comprising: an external power supply wiring board disposed axially outward of the coil ends; the external power supply wiring board having a plurality of bus bars, one end of each bus bar being connected to the coil and the other end being connected to electric wires leading to an external power supply; and the bus bars being shaped so that connection positions of the electric wires are close to each other.

10. 10. The rotating electric machine according to claim 9, wherein an insulator is inserted between the bus bars.

11. 9. The rotating electric machine according to claim 1, wherein an insulator is inserted between the bus bars.

12. 9. The rotating electric machine according to claim 1, wherein the rotating electric machine is an inner rotor type.

13. 10. The rotating electric machine according to claim 9, wherein the rotating electric machine is an inner rotor type.

14. 11. The rotating electric machine according to claim 10, wherein the rotating electric machine is an inner rotor type.

15. 12. The rotating electric machine according to claim 11, wherein the rotating electric machine is an inner rotor type.

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