JP2006246594A - Wiring member for rotating electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiring member of a rotating electric machine capable of facilitating connections to coil terminals. <P>SOLUTION: The wiring member of a rotating electric machine comprises U-phase bus bar 110U, V-phase bus bar 110V and W-phase bus bar 110W, which are laminated, in such a state that they are insulated with each other. The U-phase bus bar 110U, the V-phase bus bar 110V and the W-phase bus bar 110W include a plurality of circumferentially mounted connectors which are also connectors to coils. The connectors are a U-phase small-diameter hole 211U, a U-phase large-diameter hole 210U, a V-phase large-diameter hole 210V, a V-phase small-diameter hole 211V, a V-phase small-diameter hole 211V, a W-phase large-diameter hole 210W, and a W-phase small-diameter hole 211W mounted on respective bus bars. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wiring member for a rotating electrical machine, and more particularly to a wiring member for a rotating electrical machine using a bus bar.

Conventionally, wiring members of rotating electrical machines are disclosed in, for example, Japanese Patent Application Laid-Open No. 2003-284279 (Patent Document 1), Japanese Patent Application Laid-Open No. 2003-164093 (Patent Document 2), and Japanese Patent Application Laid-Open No. 2001-25198 (Patent Document 3). Has been.
JP 2003-284279 A JP 2003-164093 A JP 2001-25198 A

  Patent Document 1 discloses a wiring member in which ring-shaped bus bars formed by bending bus bars are stacked.

  In patent document 2, the structure which arrange | positions a neutral wire in the center part of a U-shaped bus bar, and is heat-welded is disclosed.

  Patent Document 3 discloses a configuration using a bus bar as a wiring structure.

  However, in the prior art, since a connection terminal with a coil provided on a bus bar as a wiring member is provided protruding from the bus bar, there is a problem that positioning is difficult at the time of connection with a coil terminal.

  Accordingly, the present invention has been made to solve the above-described problems, and an object thereof is to provide a wiring member for a rotating electrical machine that can be easily connected to a terminal of a coil.

  A wiring structure of a rotating electrical machine according to the present invention includes a plurality of bus bars that are stacked in a state where each is insulated from each other, and the plurality of bus bars are a connection portion with a coil and are arranged in a circumferential direction. It has a connection part and a plurality of connection parts are a crevice or a hole provided in each of a plurality of bus bars.

  In the wiring member of the rotating electrical machine configured as described above, since the plurality of connection portions are recesses or holes provided in each of the plurality of bus bars, the positioning of the end of the coil is facilitated by the recesses or holes. As a result, the connection with the coil terminal becomes easy, and the manufacture becomes easy.

  More preferably, the recess or the hole communicates in the stacking direction of the plurality of bus bars.

  Preferably, the size of the recess or hole of the predetermined bus bar is smaller than the recess or hole of the other bus bar.

  More preferably, each of the plurality of bus bars has a bent portion provided with a connection portion, and the bent portions are arranged offset for each stacked bus bar.

  According to the present invention, it is possible to provide a wiring member for a rotating electrical machine that can be easily connected to a coil terminal and can be easily manufactured.

  Embodiments of the present invention will be described below with reference to the drawings. In the following embodiments, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

(Embodiment 1)
FIG. 1 is a plan view of a rotating electrical machine according to Embodiment 1 of the present invention. Referring to FIG. 1, rotating electric machine 600 according to the first embodiment of the present invention includes a cylindrical case 102, a stator core 103 fitted to the inner peripheral surface of case 102, and a U-phase coil wound around the stator core. 100 U, V phase coil 100 V, W phase coil 100 W, U phase coil 100 U, V phase coil 100 V, neutral phase bus bar 101 connected to W phase coil 100 W, and W phase bus bar 110 W connected to W phase coil 100 W And have.

  Rotating electric machine 600 according to the first embodiment is a U-phase, V-phase, and W-phase three-phase motor / generator, and U-phase coil 100U, V-phase coil 100V, and W-phase coil 100W are adjacent and continuous. To be arranged. Each U-phase coil 100U, V-phase coil 100V and W-phase coil 100W are wound around the teeth of stator core 103, and rotating electric machine 600 according to the first embodiment is a so-called concentrated winding rotating electric machine. The present invention is not limited to this example, and the present invention may be applied to a distributed winding rotating electrical machine.

  Terminals of U-phase coil 100U, V-phase coil 100V, and W-phase coil 100W are connected to neutral point bus bar 101. That is, the rotary electric machine 600 according to the first embodiment is a so-called Y-connection rotary electric machine, but is not limited thereto, and the present invention can also be applied to a Δ-connection rotary electric machine.

  Neutral point bus bar 101 has an annular shape (circular shape) and is placed on U-phase coil 100U, V-phase coil 100V, and W-phase coil 100W. A W-phase bus bar 110 </ b> W is disposed on the outer periphery of the neutral point bus bar 101. Neutral point bus bar 101 and W-phase bus bar 110W are arranged concentrically. Under the W-phase bus bar 110W, a V-phase bus bar and a U-phase bus bar are provided. From each bus bar, a W-phase terminal 111W, a V-phase terminal 111V, and a U-phase terminal 111U are drawn.

  FIG. 2 is a cross-sectional view taken along the line II-II in FIG. Referring to FIG. 2, rotating electric machine 600 includes a case 102 and a stator core 103 fitted to the inner peripheral surface of case 102. The stator core 103 has a plurality of teeth 104, and the teeth 104 are provided so as to extend in the radial direction toward the inner peripheral portion of the stator core 103. Each of the teeth 104 is wound with a U-phase coil 100U, a V-phase coil 100V, and a W-phase coil 100W. U-phase coil 100U, V-phase coil 100V, and W-phase coil 100W are configured by winding copper wire around teeth 104. As a method of winding the copper wire, it is possible to employ winding using an inserter, or so-called direct winding, which is wound directly on the teeth 104.

  On the stator core 103, a U-phase bus bar 110U, a V-phase bus bar 110V, and a W-phase bus bar 110W are stacked. U-phase bus bar 110U, V-phase bus bar 110V, and W-phase bus bar 110W have substantially the same diameter, and are members for supplying power to U-phase coil 100U, V-phase coil 100V, and W-phase coil 100W. A U-phase terminal 111U is drawn out from the U-phase bus bar 110U.

  FIG. 3 is an enlarged cross-sectional view of a portion indicated by III in FIG. Referring to FIG. 3, teeth 104 of stator core 103 have a shape that increases in height as they approach the tip (inner peripheral portion), and by winding W-phase coil 100 </ b> W around such shaped teeth 104, The W-phase coil 100 </ b> W is not easily detached from the teeth 104.

  Neutral point bus bar 101 and U phase bus bar 110U are arranged on W phase coil 100W. U-phase bus bar 110U may be placed on stator core 103. Furthermore, an insulating member may be interposed between W-phase coil 100W or stator core 103 and U-phase bus bar 110U.

  An insulating layer 114, a V-phase bus bar 110V, an insulating layer 113, and a W-phase bus bar 110W are stacked on U-phase bus bar 110U. Insulating layers 113 and 114 may be attached to W-phase bus bar 110W and U-phase bus bar 110V. Insulating layers 114 and 113 function to insulate U-phase bus bar 110U, V-phase bus bar 110V, and W-phase bus bar 110W from each other.

  In this example, a U-phase bus bar 110U, a V-phase bus bar 110V, and a W-phase bus bar 110W are stacked from the side close to the stator core 103. However, in the present invention, the order of the stacking is not particularly limited, and any of the U-phase bus bar 110U, the V-phase bus bar 110V, and the W-phase bus bar 110W may be on the lowermost side, and one of them is one. It may be on the upper side.

  4 is an enlarged plan view showing a part of the rotating electrical machine as seen from the direction indicated by the arrow IV in FIG. Referring to FIG. 4, W-phase coil terminal 106W of W-phase coil 100, U-phase coil terminal 106U of U-phase coil 100U, and V-phase coil terminal 106V of V-phase coil 100V are neutral point bus bar 101, Connected to each bus bar. Specifically, one of W-phase coil terminals 106W of W-phase coil 100W is connected to neutral point bus bar 101, and the other is connected to U-phase bus bar 110W. One of the U-phase coil terminals 106U of the U-phase coil 100U is connected to the neutral point bus bar 101, and the other is connected to the U-phase bus bar. One of the V-phase coil terminals 106V of the V-phase coil 100V is connected to the neutral point bus bar 101, and the other is connected to the V-phase bus bar.

  The electric power supplied from the U-phase terminal 111U is sent to the U-phase coil 100U via the U-phase coil terminal 106U, and further sent to the neutral point bus bar 101 via the U-phase coil terminal 106U. The electric power supplied from the V-phase terminal 111V is sent to the V-phase coil 100V via the V-phase coil terminal 106V, and further returned to the neutral point bus bar 101 via the V-phase coil terminal 106. The electric power supplied from the W-phase terminal 111W is sent to the W-phase coil 100W via the W-phase coil terminal 106W, and is further returned to the neutral point bus bar 101 via the W-phase coil terminal 106W.

  The supply of electric power as described above is when the rotating electrical machine 600 is used as a motor. When the rotating electrical machine 600 is used as a generator, a current flows in the opposite direction.

  FIG. 5 is an exploded perspective view of the rotating electrical machine. Referring to FIG. 5, U-phase bus bar 110U, V-phase bus bar 110V, and W-phase bus bar 110W are arranged on stator core 103 in order from the bottom. Each of U-phase bus bar 110U, W-phase bus bar 110V, and W-phase bus bar 110W is provided with U-phase terminal 111U, V-phase terminal 111V, and W-phase terminal 111W so as to protrude in the outer peripheral direction. A neutral point bus bar 101 is arranged on the inner periphery of the U-phase bus bar 110U, the V-phase bus bar 110V, and the W-phase bus bar 110W.

  In this embodiment, an annular U-phase bus bar 110U, a V-phase bus bar 110V, a W-phase bus bar 110W and a neutral point bus bar 101 are shown, but the present invention is not limited to this, and a polygonal U-phase bus bar is shown. It is also possible to employ bus bar 110U, V-phase bus bar 110V, W-phase bus bar 110W and neutral point bus bar 101.

  6 is a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is a perspective view including a cross section taken along line VII in FIG. 6 and 7, U-phase bus bar 110U, V-phase bus bar 110V, and W-phase bus bar 110W are stacked with insulating layers 114 and 113 interposed therebetween. U-phase bus bar 110U, V-phase bus bar 110V, and W-phase bus bar 110W are made of a material having low electrical resistance, and are made of, for example, copper or aluminum.

  U-phase bus bar 110U is provided with U-phase large-diameter hole 210U and U-phase small-diameter hole 211U, and U-phase large-diameter hole 210U is not in contact with W-phase coil terminal 106W and V-phase coil terminal 106V. On the other hand, the U-phase small diameter hole 211U is in contact with the U-phase coil terminal 106U.

  V-phase bus bar 110V has V-phase large-diameter hole 210V and V-phase small-diameter hole 211V, and V-phase large-diameter hole 210V is not in contact with W-phase coil terminal 106W and U-phase coil terminal 106U. In contrast, the V-phase small diameter portion 211V is in contact with the V-phase coil terminal 106V.

  W-phase bus bar 110W has W-phase large-diameter hole 210W and W-phase small-diameter hole 211W, and W-phase large-diameter hole 210W is not in contact with U-phase coil terminal 106U and V-phase coil terminal 106V. On the other hand, the W-phase small diameter hole 211W is in contact with the W-phase coil terminal 106W.

  Each of U-phase bus bar 110U, V-phase bus bar 110V, and W-phase bus bar 110W is provided with holes for connecting to U-phase coil terminal 106U, V-phase coil terminal 106V, and W-phase coil terminal 106W. The bus bar and the coil terminal can be selectively connected only to the phase. Such selective joining is possible by changing the hole diameter and coil terminal diameter of the bus bar in each of the U phase, V phase and W phase.

  Moreover, in the coil terminal connected with each bus bar, the copper wire is stripped. Generally, a coating is provided on the outer periphery of the copper wire, and this coating is removed at the connection site. As a result, the internal conductor and the bus bar can be in direct contact and energized.

  Further, the bus terminal and the coil bar may not be in direct contact with each other, but the coil terminal and the bus bar may be in contact with each other through a conductive joint such as a brazing material.

  Each bus bar is provided with two holes having a large diameter and one hole having a small diameter, and by rotating them relatively by one hole position, the U-phase, V-phase and W-phase are arranged. Busbar is configured.

  As shown in FIG. 6, the W-phase small-diameter hole 211 </ b> W, the V-phase small-diameter hole 211 </ b> V, and the U-phase small-diameter hole 211 </ b> U that are small-diameter portions are arranged one by one. The U-phase small-diameter hole 211U, the V-phase small-diameter hole 211V, and the W-phase small-diameter hole 211W constitute a connection portion, which is a connection portion between the bus bar and the coil terminal.

  In contrast, the V-phase large-diameter hole 210U, the V-phase large-diameter hole 210V, and the W-phase large-diameter hole 210W are not in direct contact with the U-phase coil terminal 106U, the V-phase coil terminal 106V, and the W-phase coil terminal 106W. In the portion where U-phase coil terminal 106U is arranged, U-phase small diameter hole 211U, V-phase large-diameter hole 210V, and W-phase large-diameter hole 210W overlap. In the region where the V-phase coil terminal 106V is disposed, the U-phase large-diameter hole 210U, the V-phase small-diameter hole 211V, and the W-phase large-diameter hole 210W are disposed.

  In the region where the W-phase coil terminal 106W is disposed, the U-phase large-diameter hole 210U, the V-phase large-diameter hole 210V, and the W-phase small-diameter hole 211W are overlapped.

  FIG. 8 is a block diagram of a drive apparatus having a rotating electrical machine according to the present invention. Referring to FIG. 8, drive device 1000 according to the present invention includes DC power supply B, inverters 10 and 20, capacitor 30, resolvers 40 and 50, current sensors 60 and 70, and control device 80. Prepare.

  Inverter 10 includes a U-phase arm 11, a V-phase arm 12, and a W-phase arm 13. U-phase arm 11, V-phase arm 12 and W-phase arm 13 are connected in parallel between nodes N1 and N2.

  The U-phase arm 11 is composed of NPN transistors Q3 and Q4 connected in series, the V-phase arm 12 is composed of NPN transistors Q5 and Q6 connected in series, and the W-phase arm 13 is composed of NPN transistors Q7 and Q8 connected in series. Become. Further, diodes D3 to D8 that flow current from the emitter side to the collector side are respectively connected between the collectors and emitters of the NPN transistors Q3 to Q8.

  Inverter 20 includes U-phase arm 21, V-phase arm 22, and W-phase arm 23. U-phase arm 21, V-phase arm 22 and W-phase arm 23 are connected in parallel between nodes N1 and N2. The U-phase arm 21 includes NPN transistors Q9 and Q10 connected in series, the V-phase arm 22 includes NPN transistors Q11 and Q12 connected in series, and the W-phase arm 23 includes NPN transistors Q13 and Q13 connected in series. Q14. Further, diodes D9 to D11 for passing a current from the emitter side to the collector side are connected between the collector and emitter of each NPN transistor Q9 to Q14.

  The intermediate point of each phase arm of inverter 10 is U-phase bus bar 110U, V-phase bus bar 110V, and W-phase bus bar 110W by each phase coil (U-phase coil 100U, V-phase coils 100V and W of AC motor M1). Phase coil 100W) is connected to each phase end. An intermediate point of each phase arm of inverter 20 is connected to each phase end of each phase coil of AC motor M2. That is, AC motors M1 and M2 are three-phase permanent magnet motors, and are configured such that one ends of three coils of U phase, V phase, and W phase are commonly connected to a neutral point. The other end of the U-phase coil of AC motor M1 is at the intermediate point of NPN transistors Q3 and Q4, the other end of the V-phase coil is at the intermediate point of NPN transistors Q5 and Q6, and the other end of the W-phase coil is NPN transistor Q7. , Q8, respectively.

  The other end of the U-phase coil of AC motor M2 is at the intermediate point of NPN transistors Q9 and Q10, the other end of the V-phase coil is at the intermediate point of NPN transistors Q11 and Q12, and the other end of the W-phase coil is at NPN transistor Q13, Each is connected to an intermediate point of Q14.

  Capacitor 30 is connected in parallel to inverters 10 and 20 between node N1 and node N2.

  The DC power source B is composed of a secondary battery such as nickel hydride or lithium ion. Inverter 10 converts the DC voltage from capacitor 30 into an AC voltage based on drive signal DRV1 from control device 80, and drives AC motor M2.

  Capacitor 30 smoothes the DC voltage from DC power supply B and supplies the smoothed DC voltage to inverters 10 and 20. The resolver 40 is attached to the rotating shaft of the AC motor M1, detects the rotation angle θbn1 of the rotor of the AC motor M1, and outputs it to the control device 80. The resolver 50 is attached to the rotation shaft of the AC motor M2, detects the rotation angle θbn2 of the rotor of the AC motor M2, and outputs it to the control device 80.

  Current sensor 60 detects motor current MCRT1 flowing through AC motor M1, and outputs the detected motor current MCRT1 to control device 80. Current sensor 70 detects motor current MCRT2 flowing through AC motor M2 and outputs the detected motor current MCRT2 to control device 80.

  The control device 80 corrects the rotation angle θbn1 from the resolver 40. Then, control device 80 generates drive signal DRV1 for driving QPN to Q8 of inverter 10 using corrected rotation angle θn1 and torque command value TR1 from an external ECU (electronic control device). The generated drive signal DRV1 is output from NPN transistors Q3 to Q8.

  Further, the control device corrects the rotation angle θbn2 from the resolver 50. Controller 80 generates drive signal DRV2 for driving NPN transistors Q9 to Q14 of inverter 20 using corrected rotation angle θn2 and torque command value TR2 from the external ECU, and the generated drive signal DRV2 is output from NPN transistors Q9 to Q14.

  The wiring member of the rotating electrical machine 600 according to the present invention includes a U-phase bus bar 110U, a V-phase bus bar 110V, and a W-phase bus bar 110W as a plurality of bus bars that are stacked in a state where they are insulated from each other. Each of the U-phase bus bar 110U, the V-phase bus bar 110V, and the W-phase bus bar 110W has a plurality of connection portions arranged in the circumferential direction, which are connection portions to the coils, and the connection portions are connected to the plurality of bus bars. A U-phase large-diameter hole 210U, a U-phase small-diameter hole 211U, a V-phase large-diameter hole 210V, a V-phase small-diameter hole 211V, a W-phase large-diameter hole 210W, and a W-phase small-diameter hole 211W are provided.

  Each hole communicates in the stacking direction of the plurality of U-phase bus bars 110U, V-phase bus bars 110V, and W-phase bus bars 110W.

  Of the stacked holes, the coil terminal and the bus bar are connected in the small diameter hole, and the bus bar and the coil terminal do not contact in the large diameter hole portion.

  In the wiring member of rotating electrical machine 600 configured as described above, holes are provided in U-phase bus bar 110U, V-phase bus bar 110V, and W-phase bus bar 110W, and U-phase coil terminal 106U, V-phase coil terminal 106V, and W-phase are provided in these holes. By inserting the coil terminal 106W, it is possible to reliably connect each coil terminal and the bus bar.

(Embodiment 2)
FIG. 9 is a cross-sectional view of a bus bar of a rotating electrical machine according to Embodiment 2 of the present invention. Referring to FIG. 9, U-phase coil terminal 106U, V-phase coil terminal 106V and W-phase coil terminal 106W are not in cross section, and other U-phase bus bar 110U, V-phase bus bar 110V and W-phase bus bar 110W and Insulating layers 113 and 114 are cross sections. In this embodiment, each of U-phase bus bar 110U, V-phase bus bar 110V, and W-phase bus bar 110W is provided with a U-groove (concave portion). Specifically, the U-phase bus bar 110U is provided with a U-phase large-diameter recess 410U and a U-phase small-diameter recess 411U. The V-phase bus bar 100V is provided with a V-phase large-diameter recess 410V and a V-phase small-diameter recess 411V. The W-phase bus bar 110W is provided with a W-phase large-diameter recess 410W and a W-phase small-diameter recess 411W.

  In the first embodiment, a bus bar, which is a flat plate processed in an edgewise ring shape, is stacked and a through hole is provided at the center of the flat plate. In this embodiment, the U-phase bus bar 110U, V-phase is provided. U-phase coil terminal 106U, V-phase coil terminal 106V, and W-phase coil terminal 106W are applied to U-shaped grooves cut on the inner periphery or outer periphery of bus bar 110V and W-phase bus bar 110W, and these are connected.

  U-phase large-diameter hole 210U, U-phase small-diameter hole 211U, V-phase large-diameter hole 210V, V-phase small-diameter hole 211V, W-phase large-diameter hole 210W and W-phase small-diameter hole 211W according to the first embodiment are circular. The U-phase large-diameter concave portion 410U, the U-phase small-diameter concave portion 411U, the V-phase large-diameter concave portion 410V, the V-phase small-diameter concave portion 411V, the W-phase large-diameter concave portion 410W, and the W-phase small-diameter concave portion 411W according to the second embodiment are semicircular. Although it was a shape, it may be not only a circular shape but also a square shape. Moreover, an elliptical shape may be sufficient.

  FIG. 10 is a perspective view including a cross section taken along line XX in FIG. Referring to FIG. 10, U-phase large-diameter concave portion 410U, V-phase small-diameter concave portion 411U, and W-phase large-diameter concave portion 410W are provided on the outer peripheral portions of arc-shaped U-phase bus bar 110U, V-phase bus bar 110V, and W-phase bus bar 110W. ing. In this way, a recess may be provided on the inner periphery instead of being provided on the outer periphery.

  The wiring structure of the rotating electric machine 600 according to the second embodiment configured as described above has the same effect as the wiring structure of the rotating electric machine according to the first embodiment.

(Embodiment 3)
FIG. 11 is a plan view of the bus bar of the rotating electrical machine according to the third embodiment of the present invention. Referring to FIG. 11, in the bus bar of the rotating electric machine according to the third embodiment of the present invention, bending is performed and laminated so that the three-phase connecting shops do not interfere with each other. A U-phase bus bar 110U, a V-phase bus bar 110V, and a W-phase bus bar 110W are stacked in order from the bottom, and each bus bar is provided with a U-phase terminal 111U, a V-phase terminal 111V, and a W-phase terminal 111W. Electric power is supplied from these terminals.

  The U-phase bus bar 110U, the V-phase bus bar 110V, and the W-phase bus bar 110W are arranged so that their angles are slightly shifted, and the U-phase terminal 111U, the V-phase terminal 111V, and the W-phase terminal 111W are arranged so as not to overlap each other. The

  U-phase bus bar 110U, V-phase bus bar 110V, and W-phase bus bar 110W have a U-phase bent portion 510U, a V-phase bent portion 510V, and a W-phase bent portion 510V that are bent. The U-phase bent portion 510U, the V-phase bent portion 510V, and the W-phase bent portion 510W are configured not only by bending a straight bus bar, but also by punching a disk-shaped flat plate into a square shape. You may comprise the bus bar which has the following bending part.

  12 is an enlarged perspective view showing a portion surrounded by XII in FIG. Referring to FIG. 12, U-phase bent portion 510U of U-phase bus bar 110U is provided with U-phase small diameter hole 211U, and U-phase coil terminal 106U is fitted in U-phase small diameter hole 211U. Thereby, connection between U-phase coil terminal 106U and U-phase bus bar 110U is made.

  In other words, the wiring structure of rotating electric machine 600 according to the third embodiment has a plurality of U-phase bus bar 110U, V-phase bus bar 110V, and W-phase bus bar 110W, U-phase bent portion 510U and V-phase bent portion provided with connection portions. 510V and W-phase bent portion 510W, U-phase bent portion 510U, V-phase bent portion 510V and W-phase bent portion 510W are offset for each of laminated U-phase bus bar 110U, V-phase bus bar 110V and W-phase bus bar 110W. Arranged.

  The rotating electrical machine wiring structure according to the third embodiment configured as described above has the same effects as the rotating electrical machine wiring structure according to the first and second embodiments.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention can be used in the field of wiring structures for rotating electrical machines using bus bars.

It is a top view of the rotary electric machine according to Embodiment 1 of this invention. It is sectional drawing along the II-II line | wire in FIG. It is sectional drawing to which the part shown by III in FIG. 2 was expanded. FIG. 4 is an enlarged plan view showing a part of the rotating electrical machine viewed from a direction indicated by an arrow IV in FIG. 3. It is a disassembled perspective view of a rotary electric machine. It is sectional drawing along the VI-VI line in FIG. It is a perspective view containing the cross section along the VII line in FIG. It is a block diagram of the drive device which has a rotary electric machine according to this invention. It is sectional drawing of the bus bar of the rotary electric machine according to Embodiment 2 of this invention. It is a perspective view containing the cross section along the XX line in FIG. It is a top view of the bus bar of the rotary electric machine according to Embodiment 3 of this invention. It is a perspective view which expands and shows the part enclosed by XII in FIG.

Explanation of symbols

  100U U-phase coil, 100V V-phase coil, 100W W-phase coil, 101 neutral point bus bar, 102 case, 103 stator core, 104 teeth, 106U U-phase coil terminal, 106V V-phase coil terminal, 106W W-phase coil terminal, 100U U Phase bus bar, 110V V phase bus bar, 110W W phase bus bar, 111U U phase terminal, 111V V phase terminal, 111W W phase terminal, 113, 114 insulation layer, 210U U phase large diameter hole, 210V V phase large diameter hole, 210W W Phase large diameter hole, 211U U phase small diameter hole, 211V V phase small diameter hole, 211W W phase small diameter hole, 410U U phase large diameter recess, 410V V phase large diameter recess, 410W W phase large diameter recess, 411U U phase small diameter recess, 411V V-phase small-diameter recess, 411W W-phase small-diameter recess, 600 rotating electric machine.

Claims (4)

A plurality of bus bars, each of which is laminated in a state of being insulated from each other;
The plurality of bus bars have a plurality of connection portions arranged in the circumferential direction at connection portions with the coils,
The wiring member of a rotating electrical machine, wherein the plurality of connection portions are recesses or holes provided in each of the plurality of bus bars.   The wiring member for a rotating electrical machine according to claim 1, wherein the recess or the hole communicates in a stacking direction of the plurality of bus bars.   The wiring member for a rotating electrical machine according to claim 2, wherein a size of a predetermined recess or hole of the bus bar is smaller than a recess or hole of another bus bar.   The wiring member for a rotating electrical machine according to claim 1, wherein the plurality of bus bars have a bent portion in which the connecting portion is provided, and the bent portion is arranged offset for each of the stacked bus bars.

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