KR101398459B1 - Stator for rotating electric machine and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a stator of a rotating electrical machine and a method of manufacturing the same. A stator of a rotating electrical machine according to the present invention includes a stator core having a plurality of slots and a plurality of segment conductors each having a circular cross section or a quadrangular cross section and inserted from one side of each slot to protrude to the other side A stator winding, and a guide coupled to an end of the segment conductor passing through the slot to align the end of the segment conductor. As a result, the stator winding conductors can be easily welded and the occurrence of welding defects can be suppressed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator of a rotating electrical machine,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator of a rotating electrical machine and a manufacturing method thereof, and more particularly, to a stator of a rotating electrical machine and a manufacturing method thereof, will be.

As is well known, the rotating electric machine may be configured either as a generator for converting mechanical energy into electric energy, or as an electric motor for converting electric energy into mechanical energy, respectively, or for both a generator and an electric motor.

Typically, the rotating electrical machine can be configured with a stator and a rotor that rotates relative to the stator.

1 is a view showing an example of a stator of a conventional rotary electric machine, and Fig. 2 is a perspective view of the segment conductor of Fig.

As shown in Fig. 1, the stator of the rotating electric machine has a stator core 20 and a stator winding 30 wound on the stator core 20. As shown in Fig.

The stator core 20 is provided, for example, with a rotor accommodating space S in which a rotor (not shown) is rotatably housed.

The stator core 20 may be formed, for example, by laminating a plurality of electrical steel plates 22.

Each of the electric steel plates 22 of the stator core 20 has a through hole 24 formed through the center thereof and a plurality of slots 16 and teeth 18 formed around the through hole 24, Respectively.

The stator winding 30 includes a plurality of segment conductors 31 inserted into the respective slots 16 of the stator core 20.

Although the stator winding 30 is not specifically shown in the drawing, the stator winding 30 may include a plurality of phase windings connected to each other by the plurality of segment conductors 31.

The segment conductor 31 is formed, for example, by bending a long conductor having a rectangular cross section into a predetermined shape.

As shown in FIG. 2, the segment conductor 31 includes two insertion sections 32a inserted into the slot 16, a connection section 32b connecting the two insertion sections 32a, And an extension section 32c extending outwardly from the insertion section 32a by bending. Each of the extension sections 32c may have a bent end portion 32d which is bent in an axial direction for welding.

The segment conductors 31 may be firstly bent so that the two inserting sections 32a are inserted at one side of the stator core 20 at regular intervals.

The segment conductors 31 that are primarily bent so as to have the connection section 32b and the insertion section 32a are inserted into the slots 16 of the stator core 20, respectively. At this time, the ends of the four segment conductors 31 may be inserted into the slots 16, respectively. The four ends of the interior of the slot 16 may be disposed along the radial direction.

The segment conductors 31 inserted into the slots 16 may be secondarily bent at the other side of the stator core 20. [ Each of the segment conductors 31 is formed by the secondary bending to form the extended section 32c and the bent end section 32d.

Meanwhile, the segment conductors 31 are welded to each other so that the adjacent bent end portions 31d of the segment conductors 31 are welded to each other in the same phase.

In the stator of such a conventional rotary electric machine, a long conductor is firstly bent and inserted into each slot 16 of the stator core 20, and again, from the other side of the stator core 20, The bent ends 32d of the segment conductors 31 on the same phase are welded to each other so as to connect the conductors 31 on the phase-by-phase basis. Thus, by the error in the bending process and / or the error accumulation, 31 may be different from the design position. As a result, welding failure may occur between the bent ends 32d of the segment conductors 31, and disconnection of the welded portions may occur. Further, when the interval between the segment conductors 31 is excessively narrowed, dielectric breakdown between the segment conductors 31 may occur.

KR 2010-0026001 A (2010.03.10.) KR 0485904 B1 (April 29, 2005) JP 4069425 B2 (2008.04.02.)

Accordingly, it is an object of the present invention to provide a stator of a rotating electrical machine capable of facilitating welding of a stator winding conductor and suppressing the occurrence of welding defects.

It is another object of the present invention to provide a stator of a rotating electrical machine capable of quickly and easily manufacturing stator windings.

In order to achieve the above object, the present invention provides a stator comprising: a stator core having a plurality of slots; A stator winding having a circular cross section or a rectangular cross section and having a plurality of segment conductors inserted from one side of each slot and projecting to the other side; And a guide coupled to an end of the segment conductor that has passed through the slot to align an end of the segment conductor.

Here, the guide may include a body formed of an insulator, and the insertion hole may be formed through the body.

An even number of segment conductors are inserted into the slot, and the segment conductors can be inserted into the insertion hole after bending after inserting the slot.

The end portions of the segment conductors inserted into the insertion hole and adjacent to each other in the same phase can be configured to be welded to each other so as to be energized.

The guide may be configured to be separated from the end of the segment conductor after connection of the end of the segment conductor.

The stator winding includes a plurality of phase windings, and the guide may be provided with a neutral wire connecting one end of each phase winding section and a lead wire connected to the other end of the phase winding section to apply power.

The neutral wire and the lead wire may be printed on the body of the guide.

The guide includes a body made of an insulator through which the insertion hole is formed; And a connection pattern provided on the body to connect the segment conductors of the same phase among the segment conductors inserted into the insertion holes to be energizable.

The guide may be configured to include a plurality of phase guides spaced apart in layers by having the body and the connection pattern, respectively.

The guide may be composed of a single body having a plurality of different connecting patterns arranged to be insulated in layers.

According to another aspect of the present invention, there is provided a method of manufacturing a stator of a rotating electrical machine, comprising the steps of: inserting the segment conductor at one side of the stator core and coupling the segment conductor to the stator core step; Coupling the insertion hole of the guide to an end of the protruded segment conductor; And forming a stator winding by connecting end portions of the segment conductors so as to be energizable for each phase.

The method may further include separating the guide after forming the stator winding.

The step of forming the stator windings may include welding the ends of the segment conductors phase by phase.

The guide may include a body made of an insulator and a different connection pattern provided on the body, and the step of forming the stator winding may include welding the segment conductor and the different connection pattern.

The step of forming the stator winding may include relatively rotating the guide or the welding apparatus.

As described above, according to the embodiment of the present invention, by providing the inserting hole into which the end portion of the segment conductor is inserted to provide a guide for aligning the end portion of the segment conductor, welding of the segment conductor can be facilitated, The occurrence of defects can be suppressed.

In addition, since the end portions of the segment conductors are aligned and welded at positions suitable for welding, there is no possibility that disconnection of the welded portion occurs due to increased bonding strength.

Further, since the lead wire and the heavy wire are provided in the guide, the wiring work can be facilitated.

Further, by providing different guides for connecting the segment conductors to each other in phase, the winding work for each phase can be made quickly and easily.

In addition, since the guides are provided with the corresponding connection patterns, the connection (or winding) operation can be quick and easy.

1 is a view showing an example of a stator of a conventional rotary electric machine,
Fig. 2 is a perspective view of the segment conductor of Fig. 1,
3 is a perspective view of a stator of a rotating electrical machine according to an embodiment of the present invention,
Figure 4 is a perspective view of the segment conductor of Figure 3,
Fig. 5 is a perspective view of the guide of Fig. 3,
Fig. 6 is an enlarged view of the connection area of the segment conductor of Fig. 3,
7 is a perspective view of a stator of a rotating electrical machine according to another embodiment of the present invention,
8 is a plan view of the guide of Fig. 7,
Figure 9 is a side view of a stator of a rotating electrical machine according to another embodiment of the present invention,
Fig. 10 is a perspective view of the segment conductor of Fig. 9,
Figure 11 is a side view of the different guide of Figure 9,
Figure 12 is a partial perspective view of the different guide of Figure 9;
13 is a side view of a stator of a rotating electrical machine according to another embodiment of the present invention, Fig.
Fig. 14 is a partial perspective view showing the respective connection patterns of the guide of Fig. 13,
15 is a sectional view of the insertion hole of the guide.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3, the stator of the rotating electrical machine according to an embodiment of the present invention includes: a stator core 110 having a plurality of slots 116; A stator winding (130) having a circular cross section or a rectangular cross section and having a plurality of segment conductors (131a) inserted at one side of each slot (116) and projecting to the other side; And a guide 150 coupled to an end of the segment conductor 131a passing through the slot 116 and aligning an end of the segment conductor 131a.

The stator core 110 may be configured such that a rotor accommodating space S is provided so that a rotor (not shown) can be rotatably accommodated therein, for example.

The rotor accommodation space S may have a cylindrical shape.

The stator core 110 may include a plurality of slots 116 and teeth 118 provided around the rotor accommodating space S,

The slots 116 and the teeth 118 may be alternately formed along the circumferential direction of the rotor accommodating space S.

The stator core 110 may be formed by inserting a plurality of electrical steel plates 112, for example.

Each of the electric steel plates 112 of the stator core 110 may have a through hole 114 at the center and a plurality of slots 116 and teeth 118 around the through holes 114.

A plurality of segment conductors 131a may be inserted into each of the slots 116.

Insulating members (for example, insulating paper) (not shown) may be provided in the slots 116 to insulate the segment conductors 131a from the stator core 110.

The segment conductors 131a may be insulated from each other.

Each of the segment conductors 131a may have a rectangular cross section, for example.

Here, four segment conductors 131a, which are different from each other, may be inserted into one slot 116 of the stator core 110.

More specifically, each of the segment conductors 131a may form a first layer to a fourth layer along the radial direction. Here, the first layer refers to the segment conductors 131a disposed on the innermost (center side) of each slot 116 of the stator core 110, and the fourth layer refers to the segment conductors 131a disposed on the inner The segment conductors 131a disposed on the outermost side of the segment conductors 131a disposed on the outer circumferential surface of the semiconductor substrate.

Each of the segment conductors 131a may be formed by bending a rectangular conductor having a long length into a predetermined shape.

More specifically, each of the segment conductors 131a may be inserted from one side of the stator core 110 along the axial direction and protrude to the other side of the stator core 110. The segment conductors 131a protruding toward the other side of the stator core 110 may be bent so that the ends thereof extend outward.

4, each of the segment conductors 131a includes an insertion section 132a disposed in the slot 116 of the stator core 110, a connection section 132a connecting the insertion section 132a, An inclined section 132c that extends from the insertion section 132a and a bent section 132d that is bent at the inclined section 132c.

For example, the two insertion intervals 132a may be configured such that the internal interval is a 9-slot pitch interval. It is needless to say that the interval between the two insertion sections 132a of the segment conductor 131a can be appropriately adjusted.

The two insertion sections 132a may be spaced apart to be inserted into different slots 116. [

For example, when one of the two insertion sections 132a of the one segment conductor 131a is inserted into the first slot 116, the other is inserted into the tenth slot 116, which is the ninth slot 116 along the circumferential direction, (Not shown).

In addition, the two inserting sections 132a of the segment conductors 131a may be disposed in different layers of different slots. For example, the insertion section 132a on one side of the segment conductor 131a is inserted into three layers of the first slot 116, and the insertion section 132a on the other side of the segment conductor 131a May be inserted and disposed in four layers of the tenth slot 116. [

Each slope section 132c may be inclined from the insertion section 132a.

Each of the bending sections 132d may be bent with respect to each of the inclined sections 132c so as to be disposed along the axial direction of the stator core 110. [

For example, each of the slant sections 132c may be bent upward at an end of the insertion section 132a in a circumferential direction. The length of the inclined section 132c may be formed such that an end of the inclined section 132c is disposed above the fourth slot 116 to the fifth slot 116. [ The end of each of the inclined sections 132c may be provided with a bending section 132d formed along the axial direction of the stator core 110 so as to be bent.

More specifically, the inclined section 132c extending upward from the insertion section 132a inserted in the tenth slot 116 is formed such that the bending section 132d extends in the fourteenth slot 116 and the fifteenth slot 116, As shown in FIG.

Each of the bending sections 132d may have an insertion end 132e inserted into the guide 150 at the end thereof.

The insertion end 132e may have a reduced width (thickness) as compared with the bending section 132d.

A jaw 133 may be formed at the boundary between the insertion end 132e and the bending section 132d. Accordingly, the depth of insertion of the segment conductor 131a into the guide 150 can be limited.

A guide slanting part 132f may be formed at the distal end of each insertion end 132e to gradually decrease the width. Thus, the insertion end 132e can be easily inserted into the insertion hole 155 of the guide 150. [

On the other hand, the guide 150 may be formed in a disc shape having a penetrating portion 152 formed at the center thereof, for example.

The guide 150 may include a body 151a having an insulator (insulating member) and a penetrating portion 152 formed at the center thereof.

The penetrating portion 152 may be formed to have a size corresponding to the rotor accommodating space S of the stator core 110.

More specifically, the guide 150 may include a disc-shaped body 151a having a through-hole 152 at the center and an insertion hole 155 formed through the body 151a.

The insertion holes 155 may be formed at the same pitch as the pitches of the slots 116 of the stator core 110 in the circumferential direction.

The insertion hole 155 may have a length corresponding to the segment conductor 131a along the radial direction. For example, the insertion end portion 132e of the four segment conductors 131a can be simultaneously inserted into the insertion hole 155 along the radial direction.

Each of the segment conductors 131a bends the long length of the conductor to form two inserting sections 132a and a connection section 132b and then bends the conductor section of one side along the axial direction of the stator core 110 Respectively, in each slot 116.

The end portions of the two insertion sections 132a of the segment conductors 131a protrude to the other side along the axial direction of the stator core 110 and then the inclined section 132c and the bent section 132d are formed And may be bent (bent) at the other side of the stator core 110.

Each end portion (insertion end portion 132e) of each of the segment conductors 131a that is secondarily bent can be inserted into the corresponding insertion hole 155 of the guide 150, respectively. Accordingly, even when the inclined section 132c and / or the bent section 132d are excessively bent or insufficiently bent at the time of secondary bending, they are inserted into the insertion holes 155, May be aligned in position.

More specifically, when the slant section 132c and / or the bent section 132d are excessively bent or insufficiently bent when the segment conductor 131a is secondarily bent, each of the insertion ends 132e is positioned at a predetermined position (Position in design) may occur. The insertion end portions 132e are inserted into the corresponding insertion holes 155 of the guide 150 and aligned in the predetermined positions by the insertion holes 155. Thus, It is possible to remarkably suppress the welding defect due to the positional error of the insertion end 132e and the disconnection of the welding portion. Further, the interval of the segment conductors 131a becomes excessively small, and the occurrence of the insulation breakdown phenomenon in which the insulation breaks down can be remarkably suppressed.

The segment conductors 131a may be connected to each other such that the inserting end portions 132e of the segment conductors 131a of the same phase adjacent to each other are conductively connected to each other.

6, each insertion end 132e of the first layer and the second layer of the same phase inserted into the insertion hole 155 of the guide 150 can be energized And the insertion end portions 132e of the third layer and the fourth layer of the same phase can be connected to each other so as to be energized

More specifically, between the two insertion ends 132e disposed on the first layer and the second layer, a weld 135 may be formed in which the two insertion ends 132e are welded so as to be energized.

A welding portion 135 welded to the two insertion ends 132e so as to be electrically conductive may be formed between two mutually opposed two side surfaces of the two insertion ends 132e of the third layer and the fourth layer.

A welding device (not shown) for welding the insertion end portion 132e of the segment conductor 131a and the stator core 110 and the guide 150 may be configured to rotate relative to each other when the segment conductor 131a is welded have. For example, the stator core 110 and the guide 150 may be rotated about the circumference of the stator core 110 relative to the center of the stator core 110. At this time, the welding apparatus can be fixedly arranged. As a result, the welding operation of the insertion end 132e of each of the segment conductors 131a can be facilitated. The stator core 110 and the guide 150 are fixed and a welding device (not shown) for welding the insertion end 132e of the segment conductor 131a is provided on the periphery of the stator core 110 As shown in Fig.

Meanwhile, the guide 150 may be detached from the insertion end 132e of the segment conductor 131a after the end of the segment conductor 131a is welded (connected).

With this structure, when the segment conductors 131a are welded by using the guide 150, each of the segment conductors 131a has one connection section 132b and two insertion sections 132a And then inserted into the respective slots 116 of the stator core 110, respectively.

Each of the segment conductors 131a coupled to the stator core 110 may be secondarily bent to have the inclined section 132c and the bent section 132d at the other side of the stator core 110. [

The insertion end portion 132e of each of the second bent segment conductors 131a may be inserted into the insertion hole 155 of the guide 150, respectively. Thus, the insertion end 132e of each of the segment conductors 131a can be aligned at a predetermined position (an assembled position by design). As a result, it is possible to remarkably suppress weld defect and / or disconnection of welded parts caused by occurrence of position defects of the respective insertion ends 132e, insulation breakdown, and the like.

The segment conductors 131a coupled to the guide 150 can be welded so that each phase can be energized. The stator core 110 or the welding device may be relatively rotated when the segment conductors 131a are welded.

Meanwhile, when the welding operation of the segment conductor 131a is completed, the guide 150 can be separated from the segment conductor 131a.

Hereinafter, another embodiment of the present invention will be described with reference to Figs. 7 and 8. Fig.

The same or equivalent parts to those of the above-described embodiment and the drawings may be described with the same reference numerals being omitted for convenience of explanation. Further, redundant description of some configurations may be omitted.

As shown in Figs. 7 and 8, the stator of the rotating electrical machine of this embodiment includes: a stator core 110 having a plurality of slots 116; A stator winding (130) having a circular cross section or a rectangular cross section and having a plurality of segment conductors (131a) inserted at one side of each slot (116) and projecting to the other side; And a guide 150 coupled to an end of the segment conductor 131a passing through the slot 116 and aligning an end of the segment conductor 131a.

The stator core 110 may have a rotor accommodating space S formed at the center thereof.

The stator core 110 may include a plurality of slots 116 and teeth 118 formed around the rotor accommodating space S. [

The stator winding 130 may include a plurality of phase windings.

For example, the stator winding 130 may include a U-phase winding portion, a V-phase winding portion, and a W-phase winding portion.

The winding sections for each phase (U, V, W) may include a plurality of winding sections connected in parallel to each other.

Each of the winding units may include a plurality of segment conductors 131a connected to each other so as to be energized.

The segment conductor 131a includes an insertion section 132a inserted into the slot 116, a connection section 132b connecting the insertion section 132a, a connection section 132b connecting the insertion section 132a in the circumferential direction 132a, And a bending section 132d that is bent in an axial direction at an end of the inclined section 132c.

Each of the bending sections 132d may be provided with an insertion end 132e to be inserted into the guide 150, for example.

Each of the segment conductors 131a is first bent to form the connection section 132b and the insertion section 132a before the connection of the stator core 110. After the connection of the stator core 110, And the inclined section 132c and the bent section 132d may be formed by being secondarily bent. Although not shown in the drawing, the insertion end 132e and the guide slanting part 132f may be formed in each of the bending sections 132d.

The guide 150 may have a disc shape having a penetrating portion 152 formed at the center thereof.

The guide 150 may include a body 151a made of an insulator having a penetration part 152 formed at the center thereof and an insertion hole 155 formed through the body 151a. Here, the insertion hole 155 is formed to have a long elongated shape so as to insert the end of the four segment conductors 131a therein. However, the insertion hole (not shown) may include one of the segment conductors 131a As shown in Fig. In this case, the insertion holes (not shown) may be formed in four radial directions corresponding to the respective ray air of the segment conductors 131a.

Meanwhile, the arcade guide 150 may be provided with a lead wire 160 connected to the other end of the phase winding section to apply power, and a neutral line 170 connecting one end of each phase winding section.

The lead wire 160 and the neutral wire 170 may be printed on the body 151a of the guide 150 and may be embodied in a predetermined pattern. Thus, it is possible to exclude the use of lead wires and neutral wires formed of separate conductors (e.g., circular cross section or rectangular cross section copper wire). In addition, connection of the respective winding sections and connection work of the power line can be facilitated.

The lead wire 160 may be formed on one surface of the guide 150 and the neutral line 170 may be formed on another surface of the guide 150. For example, the lead wire 160 may be formed on the upper surface of the guide 150, and the neutral line 170 may be formed on the lower surface of the guide 150.

The lead wire 160 may include, for example, an u-phase lead wire 160a, a v-phase lead wire 160b and a w-phase lead wire 160c.

The respective lead wires 160a to 160c may include branch portions 161a and 161b to be connected to the phase winding portions, respectively.

Each of the lead wires 160a to 160c may include a terminal 163 to which a power line (not shown) is connected.

The neutral line 170 may include a plurality of branch portions 171a and 171b connected to the respective phase windings, respectively.

Hereinafter, another embodiment of the present invention will be described with reference to Figs. 9 to 12. Fig.

9, the stator of the rotating electrical machine according to another embodiment of the present invention includes: a stator core 110 having a plurality of slots 116; A stator winding (130) having a circular cross section or a rectangular cross section and having a plurality of segment conductors (131b) inserted at one side of each slot (116) and projecting to the other side; And a guide 150 coupled to an end of the segment conductor 131b that has passed through the slot 116 to align the end of the segment conductor 131b.

The stator core 110 includes, for example, a rotor accommodating space S formed at the center thereof, a plurality of slots 116 formed around the rotor accommodating space S, and a plurality of teeth 118 .

The stator winding 130 may include a plurality of winding sections for each phase (u-phase, v-phase, w-phase).

Each of the phase windings may include a plurality of segment conductors 131b connected to each other so as to be energized.

The segment conductor 131b includes an insertion section 132a inserted into the different slot 116 and a connection section 132b connecting one end of the insertion section 132a, As shown in Fig. More specifically, the insertion sections 132a of the segment conductors 131b may be inserted into different layers of different slots 116, respectively. Here, though not specifically shown, the insertion end 132e and / or the guide slant 132f may be provided at the end of each insertion section 132a.

The segment conductor 131b may be formed by, for example, bending a conductor having a rectangular cross section having a long length so as to form a connection section 132b and an insertion section 132a.

The segment conductors 131b may have a substantially U-shaped configuration.

Each of the segment conductors 131b may be inserted from one side of the stator core 110 along the axial direction.

The inserting section 132a of each of the segment conductors may have a length longer than a thickness (axial length) of the stator core 110. The ends of the inserting sections 132a of the segment conductors 131b coupled to the stator core 110 may protrude from the other surface of the stator core 110 along the axial direction.

A guide 150 may be coupled to an end of the insertion section 132a protruded to the other side of the stator core 110. [ As a result, the ends of the insertion section 132a of the segment conductors 131b can be aligned with a constant interval.

The guide 150 may include different guides 150a to 150c to connect the segment conductors 131b to each other.

The phase guides 150a to 150c may include, for example, a u-phase guide 150a, a v-phase guide 150b, and a w-phase guide 150c. The stator of the rotating electrical machine of this embodiment is not specifically shown in the figure but may be constructed with a support coupled to the stator core 110 to support the phase guides 150a to 150c.

Each of the phase guides 150a to 150c may be formed with an insertion hole 155 through which the insertion section 132a inserted in the same slot 116 of the stator core 110 can be inserted. The one insertion section 132a of the segment conductor 131b can be simultaneously coupled to the three different guides 150a to 150c.

Each of the phase guides 150a to 150c may include a body 151a made of an insulator and different connecting patterns 180a to 180c formed on the surface of the body 151a.

More specifically, the u-phase connection pattern 180a may be provided on the u-phase guide 150a, and the v-phase connection pattern 180b may be provided on the v-phase guide 150b. Also, the w-phase connection pattern 180c may be provided on the w-phase guide 150c.

The body 151a of each of the phase guides 150a to 150c may be formed with an insertion hole 155 through which the segment conductor 131b can be inserted.

As shown in FIG. 11, for example, the respective guides 150a to 150c are provided with insulating members 157 so that the segment conductors 131b inserted into the insertion holes 155 can be insulated from each other. .

The insulating member 157 may be configured to protrude from both surfaces (surfaces) of the body 151a of the guide.

The phase connection patterns 180a to 180c connect the segment conductors 131b of the same phase (u-phase, v-phase, w-phase) among the segment conductors 131b inserted into the insertion holes 155, As shown in FIG. Here, the respective connection pattern 180a to 180c may be formed by, for example, a method of printing an energizable paint on the surface of the body 151a.

11, the segment conductors 131b are arranged in phase (for example, u-phase, v-phase, w-phase) along the circumferential direction of the stator core 110 .

The phase-by-phase connection patterns 180a to 180c of the phase guides 150a to 150c may be configured to connect the insertion sections 132a of the segment conductors 131b on the same phase.

The respective connection patterns 180a to 180c may be configured to connect different layers.

12, a u-phase connection pattern 180a connecting the third layer and the fourth layer of the u-phase to the upper surface of the u-phase guide 150a, for example, .

Although not shown in detail in the figure, a u-phase connection pattern may be provided on the bottom surface of the u-phase guide 150a, for example, to connect the first layer and the second layer of the u-phase so as to be energizable.

Similarly, a v-phase connection pattern 180b connecting the third layer and the fourth layer of the v-phase is provided on the upper surface of the v-phase guide 150b, and a v- A v-phase connection pattern (not shown) connecting two layers may be provided.

A w-phase connection pattern 180c connecting the third layer and the fourth layer of the w-phase is provided on the upper surface of the w-phase guide 150c. The w-phase connection pattern 180c is provided on the w- A w-phase connection pattern (not shown) connecting the two layers may be provided.

The segment conductors 131b are inserted into the insertion holes 155 of the guide pieces 150a to 150c so as to be in contact with the corresponding connection patterns 180a to 180c, have. Here, the phase connection patterns 180a to 180c may be welded to the corresponding segment conductors 131b.

In this embodiment, the guide 150 is made up of three guides including a phase guide (u-phase guide 150a, v-phase guide 150b and w-phase guide 150c) 150b, and 150c are provided with corresponding phase connection patterns 180a to 180c, respectively, the present invention may further include a lead wire, a neutral wire, and / or a jump wire for the stator winding 130. Further, a connection guide (not shown) for connecting the stator winding 130 such as the lead wire, the neutral wire, and / or the jump wire may be further provided, and the number of the guides 150 may be four or more.

With this configuration, the segment conductors 131b can be inserted into the slots 116 at one side along the axial direction of the stator core 110, respectively.

Each insertion section 132a of each of the segment conductors 131b may protrude to the other side along the axial direction of the stator core 110 through the corresponding slot 116. [

When the connection of the segment conductors 131b is completed, the phase guides 150a to 150c may be respectively coupled to the ends of the segment conductors 131b protruding to the other side of the stator core 110. [ Accordingly, the ends of each of the segment conductors 131b can be aligned with a predetermined interval.

The segment conductors 131b are brought into contact with the respective connection patterns 180a to 180c of the respective phase guides 150a to 150c so that they can be connected to each other in the same phase to form a phase winding section. Here, the segment conductors 131b which are in contact with the corresponding connection patterns 180a to 180c of the respective guides 150a to 150c may be welded to each other.

Hereinafter, another embodiment of the present invention will be described with reference to FIGS. 13 to 15. FIG.

As shown in Fig. 13, the stator of the rotating electric machine according to another embodiment of the present invention includes: a stator core 110 having a plurality of slots 116; And a stator winding (130) in which a winding having a rectangular cross section or a circular cross section is wound on the slot (116), the stator winding (130) being inserted from one side of each of the slots (116) A plurality of segment conductors 131b protruding toward the side of the semiconductor substrate; And a guide 150 coupled to an end of the segment conductor 131b to align the end of the segment conductor 131b with an insertion hole 155 into which each end of the segment conductor 131b is inserted. As shown in FIG.

The stator core 110 includes, for example, a rotor accommodating space S formed at the center thereof, a plurality of slots 116 formed around the rotor accommodating space S, and a plurality of teeth 118 .

The stator winding 130 may include a plurality of winding sections for each phase (u-phase, v-phase, w-phase).

Each of the phase windings may include a plurality of segment conductors 131b connected to each other so as to be energized.

The segment conductor 131b may include an insertion section 132a inserted into the different slot 116 and a connection section 132b connecting one end of the insertion section 132a .

More specifically, the two insertion sections 132a of the segment conductors 131b may be inserted into different layers of different slots 116, respectively.

The segment conductor 131b is formed by, for example, bending a conductor having a long length and having a rectangular cross section in a substantially U-shape so as to form one connection section 132b and two insertion sections 132a . Here, though not specifically shown, the insertion end 132e and / or the guide slant 132f may be provided at the end of each insertion section 132a.

Each of the segment conductors 131b may be inserted from one side of the stator core 110 along the axial direction.

The inserting section 132a of each of the segment conductors 131b may protrude along the axial direction from the other surface of the stator core 110 through each slot 116 of the stator core 110. [

A guide 150 may be coupled to the protruding end of each of the segment conductors 131b. Accordingly, each end of each of the segment conductors 131b can be aligned so as to maintain a constant spacing.

The guide 150 may include a body 151a made of an insulator and a plurality of insertion holes 155 formed through the body 151a.

14 and 15, the guide 150 includes a plurality of insulating layers 151b arranged in layers and a plurality of segment conductors 131b provided on the surface of the insulating layer 151b, (180a to 180c) for electrically connecting the power supply terminals The insulating layer 151b may surround the surfaces of the connection patterns 180a to 180c. Here, the number of the insulating layers 151b and the connection patterns 180a to 180c may be appropriately adjusted.

The connection patterns 180a to 180c may include differential connection patterns 180a to 180c for connecting the segment conductors 131b by phase.

For example, the segment conductors 131b inserted in the slots 116 of the stator core 110 are alternately arranged in the order of u-phase, v-phase, and w-phase along the circumferential direction of the stator core 110 As shown in FIG.

The connection patterns 180a to 180c may include a u-phase connection pattern 180a, a v-phase connection pattern 180b, and a w-phase connection pattern 180c.

The connection patterns 180a to 180c are brought into contact with the segment conductors 131b inserted into the inserting holes 155 of the guide 150 to stretch the segment conductors 131b so that the segment conductors 131b can be energized for each phase, Can be configured.

Although the connection patterns 180a to 180c are not specifically shown in the drawing, the connecting patterns 180a to 180c may be formed by connecting a neutral wire connecting one end of the phase winding section, a lead wire connecting power to the phase winding section and / And a jump line for connecting the first electrode 131b.

With this configuration, the segment conductors 131b can be inserted into the corresponding slots 116 from one side along the axial direction of the stator core 110, respectively.

Each insertion section 132a of each of the segment conductors 131b may protrude to the other side along the axial direction of the stator core 110 through the corresponding slot 116. [

When the connection of the segment conductors 131b is completed, the guides 150 may be respectively coupled to the ends of the segment conductors 131b protruding to the other side of the stator core 110. Accordingly, the ends of each of the segment conductors 131b can be aligned with a predetermined interval.

The segment conductors 131b inserted into the respective insertion holes 155 of the guide 150 may be connected to the differential connection patterns 180a to 180c so as to be energized. Thereby, since the segment conductors 131b are not welded to the stator core 110, and the segment conductors 131b and the corresponding connection patterns 180a to 180c are not welded after the segment conductors 131b are inserted into the stator core 110 The connection operation (winding operation) of each of the segment conductors 131b can be further facilitated.

The foregoing has been shown and described with respect to specific embodiments of the invention. However, the present invention may be embodied in various forms without departing from the spirit or essential characteristics thereof, so that the above-described embodiments should not be limited by the details of the detailed description.

Further, even when the embodiments not listed in the detailed description have been described, it should be interpreted broadly within the scope of the technical idea defined in the appended claims. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

110: stator core 112: electrical steel plate
116: Slot 118: Teeth
130: stator winding 131a, 131b: segment conductor
132a: Insertion section 132b: Connection section
132c: a slope section 132d: a bending section
132e: insertion end portion 132f: guide inclined portion
133: chin 135: welded portion
150: Guide 151a: Body
152: penetrating part 155: insertion hole
160: lead wire 160a: u-phase lead wire
160b: v-phase lead wire 160c: w-phase lead wire
161a, 161b, 171a, 171b: branch portion 170: neutral line
180a: u-phase connection pattern 180b: v-phase connection pattern
180c: w phase connection pattern

Claims (15)

A stator core having a plurality of slots;
A first bending section having a circular cross section or a rectangular cross section and having two insertion sections inserted into different slots and a connection section connecting the two insertion sections, A stator winding having a plurality of segment conductors protruded to the other side; And
And a guide having an insertion hole through which the end of each of the segment conductors passing through the slot is inserted and aligned to align the end portions of the segment conductors,
Wherein the guide includes a body formed of an insulator, the insertion hole being formed through the body,
An even number of segment conductors are inserted into the slots,
The segment conductor includes an inclined section, which is formed by bending an end portion of the insertion section protruding after insertion of the slot, along the circumferential direction of the stator core, and a bending section formed by bending the end of the inclined section in the axial direction. Inserted into the insertion hole of the guide,
Wherein welds welded to each other are provided between ends of two segment conductors of the same phase which are inserted into the insertion holes of the guide and are adjacent to each other. The method according to claim 1,
Wherein the inner width of the insertion hole is smaller than the outer width of the bending section,
An insertion end portion having a reduced size relative to the bending section is formed at an end of the bending section so as to be inserted into the insertion hole,
And a jaw is formed at the boundary between the bending section and the insertion end to limit an insertion depth of the segment conductor with respect to the insertion hole. 3. The method of claim 2,
Wherein a distal end of the insertion end portion is formed with a guide slope portion with a gradually reduced width. 4. The method according to any one of claims 1 to 3,
Each of the segment conductors is inserted from the lower side of the stator core,
Wherein the guide is coupled to an end of a segment conductor projecting upwardly of the stator core. 5. The method of claim 4,
Wherein the guide is separated from an end of the segment conductor after connection of the end of the segment conductor. 5. The method of claim 4,
Wherein the stator winding includes a plurality of phase windings,
Wherein the guide is provided with a neutral wire connecting one end of each phase winding section and a lead wire connected to the other end of the phase winding section to apply power. The method according to claim 6,
Wherein the neutral wire and the lead wire are printed on the body of the guide. The method according to claim 1,
Wherein the insertion hole has an elongated shape having a long length along the radial direction of the stator core so that a plurality of insertion ends disposed along the radial direction of the stator core can be simultaneously inserted. Stator. delete delete A method of manufacturing a stator of a rotating electrical machine according to claim 1,
Coupling the segment conductor to the stator core by inserting the segment conductor that is first bent to have the inserting section and the connecting section at one side of the stator core and protruding at the other end to the stator core;
Bending the ends of each of the segment conductors so that the end portions of the protruded segment conductors have the inclined section and the bent section, and then joining the guides to the ends of the second bent segment conductors; And
Forming a stator winding by welding an end portion of two segment conductors of the same phase inserted into the inserting hole of the guide and adjacent to each other;
Wherein the stator comprises a stator. 12. The method of claim 11,
Further comprising the step of separating said guide after said step of forming said stator winding. delete delete 13. The method according to claim 11 or 12,
Wherein the step of forming the stator winding includes relatively rotating the guide or the welding apparatus.

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