Wiring component for rotary electric machines, connection structure for wiring component for rotary electric machines, and manufacturing method of rotary electric machine assembly

Abstract

To provide a wiring component for rotary electric machines capable of promptly welding a rotary electric coil with an armature coil, a connection structure for a wiring component for rotary electric machines and a manufacturing method of a rotary electric machine assembly.SOLUTION: In a first bus bar 31 connected to a plurality of ends 221a and 221b of an armature coil 221 disposed in parallel in a predetermined arrangement direction, a welding section 310 connected to the plurality of ends 221a and 221b of the armature coil 221 is provided in one end in a length direction, and the welding section 310 extends in an extension direction along the arrangement direction of the ends 221a and 221b of the armature coil 221. A plurality of projections 311 and 312 protruding along the plurality of ends 221a and 221b of the armature coil 221 is provided in the welding section 310.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a wiring component for a rotating electric machine, a connection structure for wiring components for a rotating electric machine, and a method for manufacturing a rotating electric machine assembly. [Background technology]

[0002] The present applicant has proposed a motor connection member for connecting between a motor winding and a terminal block, as described in Patent Document 1. The motor connection member described in Patent Document 1 is made by plastically deforming a single wire with a circular cross section, and includes a terminal portion connected to the terminal block, a winding connection portion connected to an end of the motor winding, and an extension portion extending between the terminal portion and the winding connection portion. The winding connection portion is formed in a rectangular plate shape, and the ends of the motor winding are connected to both ends of the winding connection portion in the longitudinal direction by welding. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-207827 A Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, rotating electric machines have come to be widely used as driving sources for automobiles. In such rotating electric machines, there is a tendency to use thick armature windings in order to meet the demands for higher output. When welding thick armature windings, heat is easily diffused, and the welding process may take a long time. The longer the welding process takes, the higher the manufacturing cost.

[0005] Therefore, an object of the present invention is to provide a wiring component for a rotating electric machine that can be quickly welded to the armature winding of a rotating electric machine, a connection structure for the wiring component for a rotating electric machine, and a method for manufacturing a rotating electric machine assembly. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the present invention provides a linear wiring component for a rotating electric machine that is connected to multiple ends of armature windings that are arranged in parallel in a predetermined arrangement direction, the wiring component for a rotating electric machine having a welded portion at one longitudinal end that is connected to the multiple ends of the armature windings by welding, the welded portion extending in an extension direction along the arrangement direction, and the welded portion having multiple protrusions that protrude along each of the multiple ends of the armature winding.

[0007] Furthermore, in order to solve the above-mentioned problems, the present invention provides a connection structure for connecting multiple ends of an armature winding arranged in parallel in a predetermined arrangement direction to a linear wiring component for a rotating electric machine, wherein a welded portion is provided at one longitudinal end of the wiring component for a rotating electric machine, the welded portion being connected to the multiple ends of the armature winding by welding, the welded portion extending in an extension direction along the arrangement direction, the welded portion is provided with multiple protrusions protruding along each of the multiple ends of the armature winding, and the multiple protrusions are fused with each of the multiple ends of the armature winding.

[0008] Furthermore, for the purpose of solving the above-mentioned problems, the present invention provides a manufacturing method for a rotating electric machine assembly having a rotating electric machine in which multiple ends of an armature winding derived from an armature core are arranged parallel to each other in a predetermined arrangement direction, and a linear wiring component for a rotating electric machine connected to the multiple ends of the armature winding, the manufacturing method for a rotating electric machine assembly including a weld forming step of forming a weld having multiple protrusions protruding along each of the multiple ends of the armature winding, at one longitudinal end of the wiring component for a rotating electric machine, the multiple protrusions being arranged to face the multiple ends of the armature winding, an arrangement step of arranging the weld of the wiring component for a rotating electric machine so as to face the multiple ends of the armature winding, and a welding step of melting the multiple protrusions together with the multiple ends of the armature winding to weld the weld to the multiple ends of the armature winding. Effect of the Invention

[0009] According to the wiring component for a rotating electric machine, the connection structure for the wiring component for a rotating electric machine, and the manufacturing method for a rotating electric machine assembly of the present invention, the armature winding of the rotating electric machine and the wiring component for a rotating electric machine can be quickly welded together. [Brief description of the drawings]

[0010] [Figure 1] 1 is a perspective view showing a rotating electric machine assembly according to an embodiment of the present invention; [Diagram 2] 1A is a perspective view showing a part of a rotating electric machine assembly before and after a welding process is performed, and FIG. [Diagram 3] FIG. 2 is a configuration diagram of a rotating electric machine assembly and a terminal block as viewed from the side. [Figure 4] 2 is a circuit diagram showing a configuration example of an electric circuit in a rotating electric machine formed by an armature winding. FIG. [Diagram 5] 2 is a perspective view showing one longitudinal end of a first bus bar, and one and the other ends of a U-phase armature winding. FIG. [Figure 6] 1A is a plan view of a welded portion of a first bus bar, and FIG. 1B is an explanatory view showing an end of a U-phase armature winding superimposed on the welded portion of the first bus bar. [Figure 7] 1A is a perspective view showing a wire material that is to be used for a first bus bar, and FIG. 1B is a perspective view showing a state in which one end of the wire material in the longitudinal direction is crushed to form a rectangular flat portion in the longitudinal direction. [Figure 8] 5(a) and 5(b) are explanatory views showing a process of forming protrusions on a flat plate portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] [Embodiment Mode] FIG. 1 is a perspective view showing a rotating electric machine assembly 1 according to an embodiment of the present invention together with a terminal block 4. FIG. 2(a) is a perspective view showing a part of the rotating electric machine assembly 1 before a welding process is performed. FIG. 2(b) is a perspective view showing a part of the rotating electric machine assembly 1 after a welding process is performed. FIG. 3 is a configuration diagram of the rotating electric machine assembly 1 and the terminal block 4 as viewed from the side. The rotating electric machine assembly 1 has a rotating electric machine 2 and a busbar unit 3. In FIG. 3, a part of the rotating electric machine 2 is cut away to show its internal structure.

[0012] The rotating electric machine 2 is mounted on a vehicle as a driving source for running and a generator for generating electricity during regenerative braking, and is connected to an inverter (not shown) via a bus bar unit 3 and a terminal block 4. The rotating electric machine 2 is a three-phase motor, and armature windings 221-223 (described later) and first to third washers 41-43 of the terminal block 4 are electrically connected by the bus bar unit 3.

[0013] The rotating motor 2 has a cylindrical case 21 with a bottom, an armature 22 which is a stator fixed to the inside of the case 21, a rotor 23 arranged inside the armature 22, a shaft 24 which passes through the center of the rotor 23 and is supported so as to be rotatable integrally with the rotor 23, and a disk-shaped cover member 25 made of molded resin which covers the opening of the case 21.

[0014] In the armature 22, U-phase, V-phase, and W-phase armature windings 221-223 are wound around an armature core 220, which is an annular iron core surrounding the rotor 23. More specifically, any of the U-phase, V-phase, and W-phase windings 221-223 is wound around each of a plurality of teeth provided on the armature core 220. The armature core 220 is made of a magnetic material such as steel. The armature windings 221-223 are rectangular insulated electric wires with a rectangular cross section. The armature windings 221-223 are partially exposed to the outside of the case 21 from the cover member 25 and are molded into the cover member 25.

[0015] The rotor 23 has a cylindrical rotor core 231 with a through hole formed therein for inserting the shaft 24 therethrough, and a plurality of magnets 232 arranged on the outer periphery of the rotor core 231. The magnets 232 are provided with magnetic poles such that S poles and N poles are alternately positioned along the circumferential direction of the rotor core 231. The shaft 24 is rotatably supported by the case 21 via a bearing (not shown), and rotates about a rotation axis O.

[0016] 4 is a circuit diagram showing a configuration example of an electric circuit in the rotating electric machine 2 formed by the armature windings 221 to 223. The U-phase armature winding 221, the V-phase armature winding 222, and the W-phase armature winding 223 are each wound around the armature core 220 at multiple locations (six locations in the example shown in FIG. 4) to form a coil, and are connected to a neutral point 22n at the center of each. A U-phase current is supplied to one end 221a and the other end 221b of the U-phase armature winding 221. A V-phase current is supplied to one end 222a and the other end 222b of the V-phase armature winding 222. A W-phase current is supplied to one end 223a and the other end 223b of the W-phase armature winding 223.

[0017] One end 221a and the other end 221b of the U-phase armature winding 221, one end 222a and the other end 222b of the V-phase armature winding 222, and one end 223a and the other end 223b of the W-phase armature winding 223 are arranged in parallel to each other at a predetermined interval, and protrude to the outside from the cover member 25. One end 221a and the other end 221b of the U-phase armature winding 221, one end 222a and the other end 222b of the V-phase armature winding 222, and one end 223a and the other end 223b of the W-phase armature winding 223 protrude from the peripheral edge of the cover member 25 parallel to the rotation axis O, and are aligned in a predetermined arrangement direction along the circumferential direction of the case 21.

[0018] The busbar unit 3 has first to third busbars 31 to 33, first to third connection terminals 34 to 36 attached to the first to third busbars 31 to 33, respectively, and a resin busbar holder 37 that holds the first to third busbars 31 to 33. The busbar holder 37 is made of a molded body. The first to third busbars 31 to 33 are each a linear wiring component for a rotating electric machine.

[0019] The first to third bus bars 31 to 33 are insulated electric wires each formed by covering a conductor wire 31M, 32M, 33M made of a highly conductive metal such as a copper alloy with an insulating layer 31I, 32I, 33I made of an insulator such as enamel or fluororesin. At both ends in the longitudinal direction of the first to third bus bars 31 to 33, the insulating layers 31I, 32I, 33I are removed to expose the conductor wire 31M, 32M, 33M. The conductor wire 31M, 32M, 33M in the portion covered with the insulating layer 31I, 32I, 33I has a circular cross section. The first to third bus bars 31 to 33 are bent at a plurality of points in the portion where the conductor wire 31M, 32M, 33M is covered with the insulating layer 31I, 32I, 33I.

[0020] The first busbar 31 is provided at one end in the longitudinal direction with a welded portion 310 that is connected by welding to both one end 221a and the other end 221b of the U-phase armature winding 221 of the rotating electric machine 2. The welded portion 310 extends in an extension direction along the arrangement direction of the one end 221a and the other end 221b of the U-phase armature winding 221, and the one end 221a and the other end 221b of the U-phase armature winding 221 are welded to different positions in the extension direction of the welded portion 310. A first connection terminal 34 is welded or crimped to the other end in the longitudinal direction of the first busbar 31.

[0021] The second busbar 32 is provided at one end in the longitudinal direction with a welded portion 320 that is connected by welding to both one end 222a and the other end 222b of the V-phase armature winding 222 of the rotating electric machine 2. The welded portion 320 extends in an extension direction along the arrangement direction of the one end 222a and the other end 222b of the V-phase armature winding 222, and the one end 222a and the other end 222b of the V-phase armature winding 222 are welded to different positions in the extension direction of the welded portion 320. A second connection terminal 35 is welded or crimped to the other end in the longitudinal direction of the second busbar 32.

[0022] The third busbar 33 is provided at one longitudinal end with a welded portion 330 that is connected by welding to both one end 223a and the other end 223b of the W-phase armature winding 223 of the rotating electric machine 2. The welded portion 330 extends in an extension direction along the arrangement direction of the one end 223a and the other end 223b of the W-phase armature winding 223, and the one end 223a and the other end 223b of the W-phase armature winding 223 are welded to different positions in the extension direction of the welded portion 330. A third connection terminal 36 is welded or crimped to the other longitudinal end of the third busbar 33.

[0023] The first connection terminal 34 is connected to a first washer 41 of the terminal block 4, the second connection terminal 35 is connected to a second washer 42 of the terminal block 4, and the third connection terminal 35 is connected to a third washer 43 of the terminal block 4 by bolts 44, 45, and 46, respectively. The first to third washers 41, 42, and 43 are connected to the inverter by wiring (not shown).

[0024] Next, the configuration of first bus bar 31 will be described in detail with reference to Figures 5 and 6. Note that second bus bar 32 and third bus bar 33 are configured in the same manner.

[0025] Fig. 5 is a perspective view showing one end in the longitudinal direction of the first busbar 31, and one end 221a and the other end 221b of the U-phase armature winding 221. Fig. 6(a) is a plan view of a welded portion 310 in the first busbar 31. Fig. 6(b) is an explanatory diagram showing one end 221a and the other end 221b of the U-phase armature winding 221 superimposed on the welded portion 310 of the first busbar 31. In Fig. 5, the arrangement direction and extension direction of one end 221a and the other end 221b of the U-phase armature winding 221, and the extension direction of the welded portion 310 are indicated by double-headed arrows. The armature winding 221 is a rectangular insulated wire in which an insulating coating layer 221I made of enamel is formed on the outer surface of a conductor 221M made of a copper alloy, and at the portion connected to the welding portion 310 of the first bus bar 31, the insulating coating layer 221I is removed to expose the conductor 221M.

[0026] The welded portion 310 is flat and perpendicular to the arrangement and extension direction of the ends 221a, 221b of the armature winding 221, and is arranged so as to face the side surfaces of the ends 221a, 221b of the armature winding 221 along a direction perpendicular to the arrangement and extension direction of the ends 221a, 221b of the armature winding 221.

[0027] The welded portion 310 is provided with a plurality of projections 311, 312 protruding along each of the ends 221a, 221b of the armature winding 221. More specifically, two projections 311, 312 protrude along the extension direction of the ends 221a, 221b of the armature winding 221 from a base portion 313 of the welded portion 310 extending in the arrangement direction of the ends 221a, 221b of the armature winding 221. The base portion 313 is a flat rectangular plate having two recesses 313a, 313b formed at positions aligned with the two projections 311, 312 along the extension direction of the ends 221a, 221b of the armature winding 221.

[0028] The two protrusions 311, 312 are arranged in the extending direction of the welded portion 310. The welded portion 310 is formed with a central recess 314 between the two protrusions 311, 312, a one-side recess 315 sandwiching one of the protrusions 311 between the central recess 314, and an other-side recess 316 sandwiching the other protrusion 312 between the central recess 314. As shown in FIG. 6(a), when the length of the central recess in the extending direction of the welded portion 310 is L1, the length of the one-side recess 315 is L2, and the length of the other-side recess 316 is L3, L2 and L3 are shorter than L1. This suppresses the length of the welded portion 310 in the extending direction. In addition, when the width of one of the protrusions 311 in the extending direction of the welded portion 310 is W1 and the width of the other protrusion 312 is W2, L1 is longer than W1 and W2.

[0029] The length L1 of the central recess is set according to the distance between one end 221a and the other end 221b of the armature winding 221. The widths W1 and W2 of the projections 311 and 312 correspond to the widths of the ends 221a and 221b of the armature winding 221 in the arrangement direction of the ends 221a and 221b. As shown in FIG. 6(b), when the widths of the ends 221a and 221b of the armature winding 221 in the arrangement direction of the ends 221a and 221b are W3 and W4, respectively, the width W1 of one projection 311 is 90% or more and 110% or less of the width W3 of one end 221a. The width W2 of the other projection 311 is 90% or more and 110% or less of the width W4 of the other end 221b. In this way, since the widths W1, W2 of the protrusions 311, 312 are equivalent to the widths W3, W4 of the ends 221a, 221b of the armature winding 221, the protrusions 311, 312 and the ends 221a, 221b of the armature winding 221 can be heated in a balanced manner during welding.

[0030] As shown in FIG. 6(b), when the welded portion 310 is positioned opposite the ends 221a, 221b of the armature winding 221, the ends 221a, 221b of the armature winding 221 protrude in the extension direction further than the bottom surface 314a of the central recess 314, the bottom surface 315a of the one-side recess 315, and the bottom surface 316a of the other-side recess 316. If the protruding height of the two protrusions 311, 312 from these bottom surfaces 314a, 315a, 316a is H, and the distances between the tip surfaces 311a, 312a of the protrusions 311, 312 and the tip surfaces 221c, 221d of the ends 221a, 221b of the armature winding 221 in the extension direction of the ends 221a, 221b of the armature winding 221 are D1, D2 are 20% or less, and preferably 10% or less, of H. As a result, when the protrusions 311, 312 and the ends 221a, 221b of the armature winding 221 are heated from the tip surfaces 311a, 312a, 221c, 221d sides during welding, the protrusions 311, 312 and the ends 221a, 221b of the armature winding 221 can be melted substantially simultaneously, and welding can be performed efficiently.

[0031] Ends 221a and 221b of armature winding 221 are fused and welded to projections 311 and 312 of welded portion 310, respectively. This welding is, for example, TIG (Tungsten Inert Gas) welding using an electrode made of tungsten and inert gas, or laser welding using high-power laser light. When TIG welding is performed, a torch nozzle that supplies a torch electrode and inert gas to the welding portion is placed opposite tip surfaces 221c and 221d of ends 221a and 221b of armature winding 221 and tip surfaces 311a and 312a of projections 311 and 312, and an arc discharge is generated between these tip surfaces 221c, 221d, 311a, and 312a and the torch electrode. When performing laser welding, tip faces 221c, 221d of ends 221a, 221b of armature winding 221 and tip faces 311a, 312a of projections 311, 312 are irradiated with laser light.

[0032] 2(a), the welded portion 320 of the second busbar 32 is provided with two projections 321, 322 that protrude from the base portion 323 along one end 222a and the other end 222b of the V-phase armature winding 222, respectively, and these projections 321, 322 are welded to the ends 222a, 222b of the V-phase armature winding 222. The base portion 323 is formed with two recesses 323a, 323b at positions aligned with the two projections 321, 322.

[0033] Furthermore, the welded portion 330 of the third busbar 33 has two projections 331, 332 that protrude from the base portion 333 along one end 223a and the other end 223b of the W-phase armature winding 223, respectively, and these projections 331, 332 are welded to the ends 223a, 223b of the W-phase armature winding 222. The base portion 333 has two recesses 333a, 333b formed at positions aligned with the two projections 331, 332.

[0034] Figure 2(b) shows welded chunks 310a, 310b formed by welding the protrusions 311, 312 of the first busbar 31 to the ends 221a, 221b of the U-phase armature winding 221, welded chunks 320a, 320b formed by welding the protrusions 321, 322 of the second busbar 32 to the ends 222a, 222b of the V-phase armature winding 222, and welded chunks 330a, 330b formed by welding the protrusions 331, 332 of the third busbar 33 to the ends 223a, 223b of the W-phase armature winding 223.

[0035] Next, a manufacturing method of the rotating electric machine assembly 1 will be described with reference to Figures 7 and 8. The rotating electric machine assembly 1 is manufactured by a manufacturing method including a weld forming step of forming welds 310, 320, 330 at one end in the longitudinal direction of the first to third bus bars 31 to 33, an arrangement step of arranging the welds 310, 320, 330 to face the ends 221a, 221b, 222a, 222b, 223a, 223b of the armature windings 221, 222, 223 of each phase, and a welding step of melting the projections 311, 312, 321, 322, 331, 332 of the welds 310, 320, 330 together with the ends 221a, 221b, 222a, 222b, 223a, 223b of the armature windings 221, 222, 223 of each phase.

[0036] The weld formation process for forming welds 310, 320, 330 is a process in which one longitudinal end of a linear material with a circular cross-section is crushed to form a long flat plate in the longitudinal direction, and multiple points of the flattened portion are pressed in a direction intersecting the longitudinal direction to plastically deform the portion, thereby forming multiple protrusions 311, 312, 321, 322, 331, 332 that protrude in the direction of pressing.

[0037] FIG. 7(a) is a perspective view showing a linear material 30 which is a material for the first busbar 31. FIG. 7(b) is a perspective view showing a state in which one end in the longitudinal direction of the linear material 30 is crushed to form a rectangular flat plate portion 300 which is long in the longitudinal direction of the linear material 30. The linear material 30 is an enameled wire having a circular cross section and a conductor wire 30M and an insulating layer 30I. In the process of forming the flat plate portion 300, the insulating layer 30I is removed over a range longer than the portion which becomes the flat plate portion 300, and the conductor wire 30M is plastically deformed by pressing to form the rectangular flat plate portion 300. The long side direction of the flat plate portion 300 is the direction along the longitudinal direction of the linear material 30. The conductor wire 30M and the insulating layer 30I of the linear material 30 are the conductor wire 31M and the insulating layer 31I of the first busbar 31 after processing in the welded portion forming process.

[0038] This press working forms a gradually changing portion 301, whose cross-sectional shape gradually changes in a cross section perpendicular to the longitudinal direction of the linear material 30, on one side of the long side of the flat plate portion 300. The cross-sectional shape of the gradually changing portion 301 is rectangular in the vicinity of the flat plate portion 300 and gradually changes to a circular shape as it moves away from the flat plate portion 300. The insulating layer 31I has been removed in advance from the portion that will become the gradually changing portion 301.

[0039] 8(a) and (b) are explanatory views showing a process of forming the protrusions 311, 312 on the flat plate portion 300. In this process, a plurality of protrusions 311, 312 are formed on the flat plate portion 300 by press working using a die 5 having a convex mold 51 and a concave mold 52. Two protrusions 511, 512 having shapes corresponding to the protrusions 311, 312 are formed on the convex mold 51, and two concave portions 521, 522 having shapes corresponding to the protrusions 311, 312 are formed on the concave mold 52.

[0040] By disposing the flat plate portion 300 between the convex mold 51 and the concave mold 52 and bringing the convex mold 51 and the concave mold 52 close to each other and plastically deforming the flat plate portion 300, a part of the flat plate portion 300 is pushed into the concave portions 521 and 522 by the convex portions 511 and 512, and a welded portion 310 having the protrusions 311 and 312 is formed. The concave portions 313a and 313b are formed in the portions where the convex portions 511 and 512 of the convex mold 51 are pressed against. In other words, the protrusions 311 and 312 are formed by the plastic flow of the flat plate portion 300 by the press working using the die 5. In flat plate portion 300, end face 300a in the short side direction facing inner surface 52a of concave mold 52 in a portion where recesses 521, 522 are not formed becomes bottom surface 314a of central recess 314, bottom surface 315a of one-side recess 315, and bottom surface 316a of other-side recess 316 after press working. End face 300a in the short side direction of flat plate portion 300 abuts against inner surface 52a of concave mold 52 on both sides of recesses 521, 522, thereby allowing protrusions 311, 312 to be formed with high shape accuracy. Note that welds 320, 330 are also formed in second bus bar 32 and third bus bar 33 by the same processing method as for first bus bar 31.

[0041] In the arrangement step, the welded portion 310 of the first busbar 31 is arranged such that the ends 221a, 221b of the U-phase armature winding 221 extend in the protruding direction of the protrusions 311, 312 further than a portion of the welded portion 310 where the protrusions 311, 312 are not formed. The welded portion 320 of the second busbar 32 is arranged such that the ends 221a, 221b of the V-phase armature winding 221 extend in the protruding direction of the protrusions 321, 322 further than a portion of the welded portion 320 where the protrusions 321, 322 are not formed. The welded portion 330 of the third busbar 33 is arranged such that the ends 223a, 223b of the W-phase armature winding 223 extend in the protruding direction of the protrusions 331, 332 further than a portion of the welded portion 330 where the protrusions 331, 332 are not formed.

[0042] Then, in the welding process, as shown in Figure 2(b), ends 221a, 221b of the U-phase armature winding 221 are welded to protrusions 311, 312 at welded portion 310 of the first busbar 31, ends 222a, 222b of the V-phase armature winding 222 are welded to protrusions 321, 322 at welded portion 320 of the second busbar 32, and ends 223a, 223b of the W-phase armature winding 223 are welded to protrusions 331, 332 at welded portion 330 of the third busbar 33.

[0043] The above steps provide the rotating electric machine assembly 1. After the welding step, the portions including the welded portions 310, 320, 330 of the first to third bus bars 31-33 from which the insulating layers 31I, 32I, 33I have been removed may be coated with an insulating coating.

[0044] (Functions and Effects of the Embodiments) According to the embodiment described above, heat generated during welding of each of the welded portions 310, 320, 330 is concentrated on the projections 311, 312, 321, 322, 331, 332, making it possible to quickly weld the armature windings 221-223 of the rotating electric machine 2 to the first to third bus bars 31-33. Furthermore, the provision of the projections 311, 312, 321, 322, 331, 332 makes it possible to easily position the ends 221a, 221b of the U-phase armature winding 221, the ends 221a, 221b of the V-phase armature winding 221, and the ends 223a, 223b of the W-phase armature winding 223 at predetermined positions relative to the welded portions 310, 320, 330 of the first to third bus bars 31-33, respectively. Furthermore, by forming recesses 313a, 313b, 323a, 323b, 333a, 333b in welded portions 310, 320, 330 of first to third bus bars 31-33, positioning can be achieved not only by protrusions 311, 312, 321, 322, 331, 332, but also by recesses 313a, 313b, 323a, 323b, 333a, 333b. This enhances the effect of facilitating positioning to predetermined positions with respect to welded portions 310, 320, 330.

[0045] (Summary of the embodiment) Next, the technical ideas grasped from the above-described embodiment will be described by using the reference numerals and the like in the embodiment. However, the reference numerals and the like in the following description do not limit the components in the claims to the members and the like specifically shown in the embodiment.

[0046] [1] A linear wiring component for a rotating electric machine (first to third bus bars 31 to 33) connected to a plurality of ends (221a, 221b, 222a, 222b, 223a, 223b) of armature windings (221, 222, 223) arranged in parallel in a predetermined arrangement direction, the wiring component having one end in a longitudinal direction and a welded portion (310, 321) connected by welding to the plurality of ends (221a, 221b, 222a, 222b, 223a, 223b) of the armature windings (221, 222, 223). a wiring component (31-33) for a rotating electric machine, the welded portions (310, 320, 330) extending in an extension direction along the arrangement direction, and the welded portions (310, 320, 330) are provided with a plurality of protrusions (311, 312, 321, 322, 331, 332) protruding along each of a plurality of ends (221a, 221b, 222a, 222b, 223a, 223b) of the armature windings (221, 222, 223).

[0047] [2] The wiring component (31 to 33) for a rotating electric machine according to the above [1], wherein the welded portion (310, 320, 330) is flat and perpendicular to the arrangement direction and the extension direction of the multiple ends (221a, 221b, 222a, 222b, 223a, 223b) of the armature windings (221, 222, 223).

[0048] [3] The wiring component (31) for a rotating electric machine described in [2] above, wherein the welded portion (310) is provided with two of the protrusions (311, 312) aligned in the extension direction, and is also formed with a central recess (314) between the two protrusions (311, 312), a one-side recess (315) sandwiching one of the protrusions (311) between the central recess (314), and an other-side recess (316) sandwiching the other of the protrusions (312) between the central recess (314).

[0049] [4] The wiring component (31) for a rotating electric machine described in [3] above, wherein the length (L2, L3) of the one-side recess (315) and the length (L1) of the other-side recess (316) in the extension direction are shorter than the length (L1) of the central recess (314) in the extension direction.

[0050] [5] A connection structure for connecting multiple ends (221a, 221b) of an armature winding (221) arranged in parallel in a predetermined arrangement direction to a linear wiring component (31) for a rotating electric machine, the connection structure for a wiring component (31) for a rotating electric machine comprising: a welded portion (310) that is connected to the multiple ends (221a, 221b) of the armature winding (221) by welding at one longitudinal end of the wiring component (31), the welded portion (310) extending in an extension direction along the arrangement direction, the welded portion (310) having multiple protrusions (311, 312) protruding along each of the multiple ends (221a, 221b) of the armature winding (221), and the multiple protrusions (311, 312) melt into each of the multiple ends (221a, 221b) of the armature winding (221).

[0051] [6] A rotating electric machine assembly including: a rotating electric machine (2) in which a plurality of ends of an armature winding (221, 222, 223) derived from an armature core (220) are arranged in parallel to each other in a predetermined arrangement direction; and linear wiring components (31-33) for the rotating electric machine connected to the plurality of ends (221a, 221b, 222a, 222b, 223a, 223b) of the armature winding (221, 222, 223). a welded portion (310, 320, 330) having a plurality of projections (311, 312, 321, 322, 331, 332) protruding along each of a plurality of ends (221a, 221b, 222a, 222b, 223a, 223b) of the armature winding (221, 222, 223) is formed at one end in a longitudinal direction of the wiring component (31-33), a welded portion forming step of forming a welded portion on the wiring component for a rotating electric machine (31-33); a placement step of placing the welded portion (310, 320, 330) of the wiring component for a rotating electric machine (31-33) opposite a plurality of ends (221a, 221b, 222a, 222b, 223a, 223b) of the armature winding (221, 222, 223); and a welding process of melting the welded portion (310, 320, 330) together with multiple ends (221a, 221b, 222a, 222b, 223a, 223b) of the armature windings (221, 222, 223) to weld the welded portion (310, 320, 330) to the multiple ends (221a, 221b, 222a, 222b, 223a, 223b) of the armature windings (221, 222, 223).

[0052] [7] The method for manufacturing the rotating electric assembly (1) described in [6] above, wherein the weld formation process is a process of crushing one end of a linear material (30) having a circular cross-section in the longitudinal direction to form a flat plate that is long in the longitudinal direction, and pressing multiple points of the flat portion (300) in a direction intersecting the longitudinal direction to plastically deform the portion, thereby forming the multiple protrusions (311, 312, 321, 322, 331, 332) protruding in the pressing direction.

[0053] [8] The method for manufacturing a rotating electric assembly (1) described in [6] or [7] above, wherein the arranging step is a step of arranging the welded portions (310, 320, 330) such that the multiple ends (221a, 221b, 222a, 222b, 223a, 223b) of the armature windings (221, 222, 223) extend in the protruding direction of the multiple protrusions (311, 312, 321, 322, 331, 332) beyond the portions of the welded portions (310, 320, 330) where the multiple protrusions (311, 312, 321, 322, 331, 332) are not formed.

[0054] Although the embodiments of the present invention have been described above, the invention according to the claims is not limited to the above embodiments. It should be noted that not all of the combinations of features described in the embodiments are essential to the means for solving the problems of the invention. [Explanation of symbols]

[0055] 1...Rotating electric machine assembly 2...Rotary electric machine 220…Armature core 221, 222, 223...Armature windings 221a, 221b, 222a, 222b, 223a, 223b...end 30…Linear material 31 to 33: First to third bus bars 310, 320, 330…Welded parts 311,312,321,322,331,332...Protrusion 314…Central depression 315…One side recess 316...Other side recessed part

Claims

1. A linear wiring component for a rotating electric machine connected to a plurality of ends of armature windings arranged in parallel in a predetermined arrangement direction, a welded portion is provided at one end in a longitudinal direction and is connected to a plurality of ends of the armature winding by welding, the welded portion extending in an extension direction along the arrangement direction, the welded portion is provided with a plurality of projections extending along each of a plurality of ends of the armature winding; Wiring components for rotating electrical machines.

2. The welded portion has a flat plate shape perpendicular to the arrangement direction and the extension direction of the multiple ends of the armature winding. The wiring component for a rotating electric machine according to claim 1 .

3. The welded portion is provided with two protrusions aligned in the extension direction, and is formed with a central recess between the two protrusions, a one-side recess sandwiching one of the protrusions between the central recess and one of the protrusions, and an other-side recess sandwiching the other of the protrusions between the central recess and one of the ... The wiring component for a rotating electric machine according to claim 2 .

4. a length of the one-side recessed portion and a length of the other-side recessed portion in the extension direction are shorter than a length of the central recessed portion in the extension direction; The wiring component for a rotating electric machine according to claim 3.

5. A connection structure for connecting a plurality of ends of an armature winding arranged in parallel in a predetermined arrangement direction to a linear wiring component for a rotating electric machine, a welded portion is provided at one end in a longitudinal direction of the wiring component for a rotating electric machine, the welded portion being connected to a plurality of ends of the armature winding by welding, the welded portion extending in an extension direction along the arrangement direction, the welded portion is provided with a plurality of projections extending along each of a plurality of ends of the armature winding; the plurality of projections blending with each of the plurality of ends of the armature winding; A connection structure for wiring components for rotating electrical machines.

6. A method for manufacturing a rotating electric machine assembly including a rotating electric machine in which a plurality of ends of an armature winding led out from an armature are arranged in parallel to each other in a predetermined arrangement direction, and linear wiring components for the rotating electric machine connected to the plurality of ends of the armature winding, the method comprising the steps of: a welded portion forming step of forming a welded portion having a plurality of projections protruding along each of a plurality of ends of the armature winding at one end of the wiring component in a longitudinal direction; a positioning step of positioning the welded portion of the wiring component for a rotating electric machine so as to face a plurality of ends of the armature winding; a welding step of melting the plurality of projections together with the plurality of ends of the armature winding to weld the welded portion to the plurality of ends of the armature winding; A method for manufacturing a rotating electrical assembly having the following components:

7. The welded portion forming process is a process of crushing one end of a linear material having a circular cross section in a longitudinal direction to form a flat plate that is long in the longitudinal direction, and pressing a plurality of points of the flat plate-shaped portion in a direction intersecting the longitudinal direction to plastically deform the portion, thereby forming the plurality of protrusions protruding in the pressing direction. The method for manufacturing a rotating electrical assembly according to claim 6 .

8. the arranging step is a step of arranging the welded portion such that a plurality of ends of the armature winding extend in a protruding direction of the plurality of projections beyond a portion of the welded portion where the plurality of projections are not formed. The method for manufacturing a rotating electrical assembly according to claim 6 or 7.

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