WO2024043357A1

WO2024043357A1 - Stator for rotating electrical machine

Info

Publication number: WO2024043357A1
Application number: PCT/KR2022/012665
Authority: WO
Inventors: 김영배; 임송
Original assignee: 엘지마그나 이파워트레인 주식회사
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2024-02-29

Abstract

The present invention relates to a stator for a rotating electrical machine, comprising: a stator core having a plurality of slots; a stator coil having a plurality of conductor segments inserted into the plurality of slots, and a plurality of outermost lead lines inserted into the outermost sides of inner parts of some slots from among the plurality of slots; a connection ring connected to the plurality of outermost lead lines; and a supporter inserted into the axial direction inside the plurality of outermost lead lines in the radial direction of the stator core so as to support the plurality of outermost lead lines. Therefore, the occurrence of damage, due to vibration, to a welding part between the connection ring and the lead line can be suppressed.

Description

Stator of rotating electric machine

The present invention relates to a stator of a rotating electric machine.

As is well known, a rotating electric machine refers to a machine having a stator and a rotor rotatable with respect to the stator.

Some of the rotating electric machines consist of generators that convert mechanical energy into electrical energy, and others consist of electric motors that convert electrical energy into mechanical energy. Another part of the rotating electric machines may be configured to selectively function as an electric motor or a generator, respectively.

The stator of the rotating electric machine includes a stator core provided with slots and teeth, and a stator coil wound via the slots.

In the stator of the rotating electric machine, the higher the ratio (fill factor, filling factor, occupancy rate) of the cross-sectional area of the conductor of the stator coil to the inner area of the slot, the more advantageous it is to increase output.

Considering this, in some stators, a stator coil is used in which conductor segments called "hairpins" formed by bending a rectangular copper wire with a relatively large conductor cross-sectional area into a "U" shape are connected in a preset pattern.

The conductor segment usually includes a conductor with a square cross-section and a film formed of an insulating material surrounding the outer surface of the conductor.

The conductor segment is formed by bending a pair of insert portions each inserted into different slots of the stator core, a crown portion connecting the ends of the pair of insert portions, and the ends of the pair of insert portions, respectively, by bending, etc. It is composed of a welding part that is connected to allow electricity to pass through.

The conductor segment includes one insertion portion inserted into the slot of the stator core, a welding portion extending from one end of the insertion portion and connected to another conductor segment (hairpin), and a power line extending from the other end of the insertion portion. It is provided with a lead wire connected to or connected to another conductor segment.

Meanwhile, the stator coil is comprised of a plurality of phase coils connected to a three-phase power supply.

One end of each of the plurality of phase coils is connected to an external power source.

Each other end of the plurality of phase coils may be connected to each other.

The stator coil is composed of a so-called connection ring that connects one end of each of the plurality of phase coils to an external power source and connects the other ends to each other (Y connection).

The connection ring is implemented in an arc shape or a disk shape.

The connection ring is provided on one side of the crown portion of the stator coil along the axial direction.

However, in the stator of such a conventional rotating electric machine, the connection ring is in contact with the crown portion of the stator coil along the axial direction and is respectively joined to each lead wire extending along the axial direction from the slot of the stator core. However, there is a problem in that even a small external force can easily cause clearance (lateral clearance) and damage (cracks) to the joint (weld area).

In addition, there is a problem that assembly is difficult due to interference between the connection ring and the case accommodating the stator and rotor therein due to the lateral clearance of the connection ring.

In consideration of this problem, in the stator of some rotating electric machines, a support bracket is coupled to each lead wire before coupling the connection ring to support the lead wire connected to the connection ring.

The support bracket has a substantially circular arc shape and is configured to be simultaneously coupled to lead wires provided on the innermost layer and outermost layer of the slot of the stator core, respectively.

As a result, the occurrence of lateral clearance in the lead wire coupled to the connection ring can be suppressed.

However, in the stator of a conventional rotating electric machine equipped with such a support bracket and connection ring, the support bracket is configured to receive a lead wire extending axially from the innermost layer of the slot of the stator core, and thus along the radial direction. The inner end is disposed closer to the center of the stator core than the lead wire of the innermost layer.

However, in the stator of a conventional rotating electric machine equipped with such a support bracket and a connection ring, a defect occurs in which the inner end of the support bracket invades the gap between the stator and the rotor after the support bracket is coupled. There is a problem that is said to hinder productivity.

In addition, in the stator of a conventional rotating electric machine equipped with such a support bracket and a connection ring, the support bracket and the lead wire drawn from the innermost layer of the slot are joined using a coupling material, and the support bracket and the Since the lead wire drawn from the inner outermost layer of the slot is joined using the binding material, there is a problem in that the installation time of the connection ring is extended.

Therefore, the purpose of the present invention is to provide a stator for a rotating electric machine that can suppress damage to the welded portion of the connection ring and lead wire due to vibration.

Another object of the present invention is to provide a stator for a rotating electric machine that can suppress vibration and clearance in the connection ring.

Another object of the present invention is to provide a stator for a rotating electric machine that can shorten the installation time of the connection ring.

Another object of the present invention is to provide a stator for a rotating electric machine that can suppress the occurrence of vibration by integrally fixing lead wires connected to a connection ring.

Another object of the present invention is to provide a stator for a rotating electric machine that can stably maintain a lead wire connected to a power source spaced a certain distance from other conductor segments.

The stator of a rotating electric machine according to the present invention for solving the problems described above has a technical feature in that a supporter is provided inside a plurality of outermost lead wires along the radial direction of the stator core.

More specifically, by providing a supporter on the radial inner side of the plurality of outermost lead wires disposed on the innermost outer side of the slot of the stator core, occurrence of displacement due to clearance and vibration of the plurality of outermost lead wires can be suppressed. .

Here, by connecting connection rings to the plurality of outermost lead wires, occurrence of displacement due to lateral clearance and/or vibration of the connection rings can be suppressed.

A stator of a rotating electric machine according to an embodiment of the present invention includes a stator core provided with a plurality of slots; a stator coil including a plurality of conductor segments inserted into the plurality of slots, and a plurality of outermost lead wires inserted into the outermost interior of some of the plurality of slots; a connection ring connected to the plurality of outermost lead wires; and a supporter axially inserted into the inside of the plurality of outermost lead wires along the radial direction of the stator core to support the plurality of outermost lead wires.

As a result, the occurrence of displacement due to clearance and vibration of the plurality of outermost lead wires disposed on the innermost outer side of the slot can be suppressed.

According to this configuration, some of the plurality of outermost lead wires are connected to an external power source, and in this case, the insulation distance of the plurality of outermost lead wires connected to the external power source is stably secured, thereby suppressing the occurrence of partial discharge. .

Additionally, the occurrence of clearance in the connection ring connected to the plurality of outermost lead wires can be suppressed, and the occurrence of displacement due to vibration can be suppressed.

In addition, stress generation at the connection portion between the plurality of outermost lead wires and the connection ring can be suppressed, thereby suppressing damage to the connection portion (joint portion).

In one embodiment of the present invention, the supporter includes a supporter body formed in an arc shape with an insulating member, and the supporter body is configured to include an inclined section whose thickness is reduced along the axial direction toward the stator core. do.

As a result, the plurality of outermost lead wires are spread outward in the radial direction by the supporter body, so that the state of being spaced apart from the conductor segment provided inside the plurality of outermost lead wires at a preset distance can be stably maintained. there is.

In one embodiment of the present invention, the plurality of outermost lead lines each have an inclined section inclined with respect to the circumferential direction, and the supporter body has a side wall portion 3005 inclined corresponding to the inclined section of the plurality of outermost lead lines. ) is provided.

Here, the plurality of outermost lead lines are formed to be inclined at a preset angle (for example, 25 degrees to 35 degrees) in one direction along the circumferential direction of the stator core, and the supporter body extends in the radial direction of the stator core. Accordingly, when the supporter is viewed from the outside of the stator core, side wall portions 3005 that are inclined corresponding to the inclined section are provided at both ends along the circumferential direction.

As a result, the weight of the supporter and the input of materials can be reduced by suppressing the portions that protrude to the outside of the plurality of outermost lead wires along the circumferential direction of the stator core.

In one embodiment of the present invention, the supporter may be coupled to the plurality of outermost lead wires and surrounding conductor segments by a binding material.

In one embodiment of the present invention, the supporter has a penetrating portion formed to penetrate the supporter body.

Accordingly, when the supporter and the plurality of outermost lead wires are combined with the binder, the binder can easily flow into the radial inner side of the supporter through the penetration part.

According to this configuration, the bonding material flowing into the radial inner side of the supporter through the penetration portion couples the conductor segment provided on the radial inner side of the supporter with the supporter, thereby improving the bonding force of the supporter and the supporter and the conductor. The occurrence of clearance between the segment and the plurality of outermost lead wires can be further suppressed.

In one embodiment of the present invention, the penetrating portion has a long hole shape having a long length along the circumferential direction of the stator core.

As a result, a coupling portion formed by the coupling material along the longitudinal direction of the supporter can be formed over almost the entire length.

In one embodiment of the present invention, the penetrating portion is composed of a plurality of spaced apart portions along the circumferential direction of the stator core.

As a result, a plurality of coupling portions made of the coupling material may be formed intermittently along the longitudinal direction of the supporter.

In one embodiment of the present invention, the supporter further includes a recessed portion along the thickness direction of the supporter body.

Thereby, the weight of the supporter can be reduced.

Additionally, when the binder is introduced into the supporter, the binder is accommodated inside the recessed portion, thereby preventing the binder from flowing down.

As a result, the coupling force between the supporter and surrounding components can be increased.

In one embodiment of the present invention, the depression includes an inner depression formed on the inner surface of the supporter body along the radial direction of the stator core and an outer depression formed on the outer surface of the supporter body.

As a result, the weight of the supporter body can be further reduced.

Additionally, the coupling force between the inner and outer sides of the supporter and surrounding components can be further improved.

In one embodiment of the invention, the inner depression along the axial direction is spaced further away from the stator core than the outer depression.

Accordingly, when the binder is introduced from the upper and outer sides of the supporter, where it is easy to insert the binder, the flowing distance of the binder can be shortened, thereby reducing the amount of binder added.

In one embodiment of the present invention, the depression may be composed of one piece having a long length along the circumferential direction of the stator core.

Thereby, the weight of the supporter can be further reduced.

Additionally, the coupling material may be accommodated inside the depression along the longitudinal direction of the supporter, thereby increasing the coupling between the supporter and surrounding components.

In one embodiment of the present invention, the recessed portion may be composed of a plurality of recessed portions spaced apart from each other along the circumferential direction of the stator core.

As a result, the coupling force between the supporter and surrounding components can be increased while maintaining the strength of the supporter itself.

In one embodiment of the present invention, the supporter is provided with a guide 3009 that protrudes from the surface of the supporter body to contact the plurality of outermost lead wires.

Thereby, relative movement of the supporter with respect to the outermost lead wire along the circumferential direction of the stator core can be suppressed.

In one embodiment of the present invention, the guide 3009 may be provided at one or both ends of the supporter body along the circumferential direction of the stator core.

As a result, relative movement of one or both ends of the supporter with respect to the outermost lead wire can be suppressed.

In one embodiment of the present invention, the guide 3009 may be formed to contact each of the plurality of outermost lead wires.

As a result, clearance of the plurality of outermost lead wires along the circumferential direction can be suppressed.

Additionally, the separation distance between the plurality of outermost lead wires can be stably maintained.

In addition, the coupling force of the coupling portion between the guide 3009 of the supporter and the plurality of outermost lead wires by the coupling material can be improved.

In one embodiment of the present invention, the guide 3009 may be composed of a plurality of guides 3009 spaced apart along the circumferential direction of the stator core.

As a result, relative movement between the supporter and the plurality of outermost lead wires is suppressed, and the supporter and the plurality of outermost lead wires can be coupled at the correct position.

In one embodiment of the present invention, the supporter may be provided with a stopper protruding along the radial direction at an end away from the stator core along the axial direction.

As a result, the insertion depth of the supporter inserted along the axial direction may be limited.

In one embodiment of the present invention, the stator coil has an outer coupling portion formed by a coupling material to couple the supporter and the plurality of outermost lead wires to each other.

As a result, the plurality of outermost lead wires and the supporter are integrally fixed, thereby suppressing the occurrence of clearance between the plurality of outermost lead wires.

In one embodiment of the present invention, the stator coil may further include an inner coupling portion formed by a binding material to couple a plurality of conductor segments disposed inside the supporter along the radial direction of the stator core and the supporter to each other. there is.

As a result, the supporter is integrally coupled with the inner conductor segment, thereby suppressing the occurrence of clearance between the supporter and the plurality of outermost lead wires coupled to the supporter.

In one embodiment of the present invention, the stator coil includes a plurality of phase coils each connected to a three-phase power supply,

The stator coil further includes an innermost lead wire inserted into the innermost side of a slot into which the outermost lead wire is inserted along the radial direction of the stator core,

The connection ring has a power line connection portion connected to the three-phase power supply and a neutral line connection portion simultaneously connecting the plurality of phase coils, and the power line connection portion and the neutral line connection portion are connected to the innermost lead wire and the outermost lead wire. Each is connected to enable electricity to be conducted.

Accordingly, a part of the outermost lead wire and a part of the innermost lead wire are connected to the power line connection part to receive three-phase power, respectively, and the remainder of the outermost lead wire and the remainder of the innermost lead wire are connected to the neutral wire connection part. They are connected at the same time to form a Y connection.

In one embodiment of the present invention, the connection wire ring includes a body formed of an insulating member; and a cover formed of an insulating member and coupled to the body to be spaced apart from the body along the axial direction.

Here, the power line connection portion may be insert-injected into the body to be insulated from each other.

As a result, the insulation distance between power line connection parts connected to each phase of the three-phase power supply can be secured.

The neutral wire connection part may be coupled between the body and the cover.

As a result, the insulation distance between the neutral line connection portion and the power line connection portion can be secured.

As described above, according to an embodiment of the present invention, a supporter is inserted into the radial inside of the plurality of outermost lead wires disposed on the inner outermost layer of the slot and supports the outermost lead wires, It is possible to suppress abnormal displacement due to clearance and vibration of the outermost lead wire.

Additionally, by coupling the connection ring to the plurality of outermost lead wires supported by the supporter, occurrence of displacement due to clearance and vibration of the connection ring can be suppressed.

In addition, the supporter includes a supporter body formed in an arc shape using an insulating member, and the supporter body has an inclined section whose thickness is reduced toward the stator core, so that the plurality of outermost lead wires spread outward and form an inner conductor segment. and are separated by a preset distance, and the spaced state can be maintained stably.

In addition, the supporter has a side wall portion inclined to correspond to the inclined section of the plurality of outermost lead lines, thereby suppressing the portion protruding outward of the plurality of outermost lead lines, thereby reducing the weight and material input of the supporter. there is.

In addition, the supporter has a penetrating portion formed to penetrate the supporter body, so that the binder can be easily introduced into the radial inner side of the supporter.

In addition, the supporter includes a recessed portion in the thickness direction of the supporter body, thereby preventing the binder from flowing down. Additionally, the weight of the supporter body can be reduced.

In addition, the supporter is provided with a guide that protrudes from the surface of the supporter body to contact the plurality of outermost lead wires, thereby suppressing relative movement of the supporter with respect to the outermost lead wire along the circumferential direction of the stator core. It can be.

Additionally, the supporter is provided with a stopper that protrudes along the radial direction at an end farthest from the stator core along the axial direction, so that the insertion depth of the supporter inserted along the axial direction may be limited.

In addition, the stator coil further includes an innermost lead wire disposed on the innermost side of the slot, the connection ring has a power line connection portion and a neutral line connection portion, and the innermost layer and the outermost layer include the power line connection portion. and the neutral wire connection portion, respectively, so that wiring (Y wiring) of the stator coil can be easily performed.

1 is an exploded perspective view of a stator of a rotating electric machine according to an embodiment of the present invention;

Figure 2 is a perspective view of the stator of the rotating electric machine of Figure 1 in a combined state;

Figure 3 is a plan view of the stator of the rotating electric machine of Figure 2;

Figure 4 is a diagram showing an example of the conductor segment of Figure 1;

Figure 5 is a diagram showing an example of the outermost lead line of Figure 1;

Figure 6 is a view showing an insertion portion inside the slot of Figure 1;

Figure 7 is an enlarged perspective view of the connection ring of Figure 1;

Figure 8 is an exploded perspective view of the connection ring of Figure 7;

Figure 9 is a plan view of the connection ring of Figure 7;

Figure 10 is an enlarged perspective view of the supporter of Figure 1;

Figure 11 is a view of the supporter of Figure 10 from the front side;

Figure 12 is a view from above the supporter of Figure 11;

Figure 13 is a diagram showing the combined state of the outermost lead wire and supporter of Figure 2;

Figure 14 is a cross-sectional view of the supporter area of Figure 2;

Figure 15 is a modification of the supporter of Figure 1;

Figure 16 is a view looking at the supporter of Figure 15 from the front;

Figure 17 is another modification of the supporter of Figure 1;

Figure 18 is a view looking at the supporter of Figure 17 from the front;

Figure 19 is another variation of the supporter of Figure 1;

Figure 20 is a view looking at the supporter of Figure 19 from the front;

Figure 21 is a front view of another modification of the supporter of Figure 1;

Figure 22 is a front view of another modification of the supporter of Figure 1;

Figure 23 is a front view of another modification of the supporter of Figure 1;

Figure 24 is a front view of another modification of the supporter of Figure 1;

Figure 25 is a front view of another modification of the supporter of Figure 1;

Figure 26 is a cross-sectional view of the supporter of Figure 25;

Figure 27 is a perspective view of another variation of the supporter of Figure 1;

Figure 28 is a cross-sectional view of the supporter of Figure 27 in an assembled state;

Figure 29 is a modification of the stopper of Figure 27;

Figure 30 is another modified example of the stopper of Figure 27.

Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. In this specification, the same or similar reference numbers are assigned to the same or similar components even in different embodiments, and the description is replaced with the first description. As used herein, singular expressions include plural expressions unless the context clearly dictates otherwise. Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted. In addition, it should be noted that the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and should not be construed as limiting the technical idea disclosed in this specification by the attached drawings.

Figure 1 is an exploded perspective view of a stator of a rotating electric machine according to an embodiment of the present invention, Figure 2 is a perspective view of the stator of the rotating electric machine of Figure 1 in a combined state, and Figure 3 is a stator of the rotating electric machine of Figure 2. It is a plan view, Figure 4 is a diagram showing an example of the conductor segment of Figure 1, Figure 5 is a diagram showing an example of the outermost lead wire of Figure 1, and Figure 6 is an insertion inside the slot of Figure 1. This is a drawing showing wealth.

1 to 3, the stator of the rotating electric machine of this embodiment includes a stator core 110, a stator coil 150, a connection ring 200, and a supporter 300.

For example, the stator core 110 is provided with a rotor receiving hole 115 so that a rotor (not shown) can be rotatably accommodated therein.

The rotor receiving hole 115 is formed through the axial direction.

Here, the axial direction refers to a direction parallel to the rotation axis of the rotor, and refers to a vertical direction based on ㄷh 1.

The stator core 110 is formed, for example, by insulating and stacking a plurality of electrical steel sheets 112.

The stator core 110 has a cylindrical shape.

A plurality of boss portions 119 protruding outward along the radial direction may be formed on the outer surface of the stator core 110. The plurality of boss portions 119 are provided with through holes 120 penetrating in the axial direction.

In this embodiment, the plurality of boss parts 119 are implemented as four, but this is only an example and is not limited thereto.

The stator core 110 has a plurality of slots 116 and teeth 117.

The plurality of slots 116 and teeth 117 are arranged alternately along the circumferential direction.

In this embodiment, the plurality of slots 116 and teeth 117 may each be implemented as, for example, 96 slots.

The stator coil 150 includes a plurality of conductor segments 160 inserted into the plurality of slots 116.

Inside the plurality of slots 116, a plurality of conductor segments 160 are respectively inserted and coupled to be spaced apart along the radial direction.

For example, as shown in FIG. 4, the plurality of conductor segments 160 include two insertion parts 161 each inserted into different slots 116 among the plurality of slots 116, the 2 It is provided with a connecting part 165 connecting the two insertion parts 161 and an extension part 168 extending from each of the two insertion parts 161.

Here, the connection part 165 may be referred to as a 'crown part', and the extension part 168 may be referred to as a 'welding part'.

The conductor segment 160 is formed by bending a long linear conductor into a preset pattern (size and shape).

The conductor segment 160 is comprised of a metal conductor 1601 through which current can flow and a film 1602 that surrounds and insulates the outer surface of the conductor 1601.

The spacing between the two insertion portions 161 is implemented to have a preset slot pitch (spacing).

Here, the slot pitch refers to the gap between the two insertion parts 161 inserted into different slots 116.

Specifically, when the two insertion portions 161 are formed to have a 6-slot pitch (spacing), for example, when one of the two insertion portions 161 is inserted into the first slot, the other insertion portion 161 is inserted into the first slot. Part 161 is inserted into the seventh slot, which is the sixth slot, along the circumferential direction.

The connection portion 165 is provided with two inclined sections 1651 obliquely extending from the two insertion portions 161 and a bending section 1652 formed in the boundary area of the two inclined sections 1651, and has approximately It is configured to form an inverted “V” shape.

The two extension parts 168 each extending from the two insertion parts 161 of the conductor segment 160 may be bent at a preset slot pitch and obliquely extended along the circumferential direction of the stator core 110. .

In this embodiment, the inclined section 1651 of the connection portion 165 and the extension portion 168 have an inclination angle of approximately 20-25 degrees with respect to a straight line (parallel line) parallel to the end surface of the stator core 110. It is well-constructed.

Each of the extension portions 168 is bent and has a bent end portion 1681 extending along the axial direction.

Each of the bent ends 1681 is provided with a connection end 16811 from which the coating film 1602 is removed so that it can be connected to another conductor 1601 to enable electricity to pass through it.

For example, as shown in FIG. 5, the stator coil 150 includes one insertion part 181 inserted into the plurality of slots 116, and one end of the insertion part 181 ( It is configured to include a lead wire 180 having a connection part 185 extending upward from the upper end in the drawing and an extension part 188 extending downward from the other end of the insertion part 181 (lower part in the drawing). .

The lead wire 180 includes a conductor 1801 through which current flows and a film 1802 that surrounds and insulates the conductor 1801.

The connection portion 185 includes, for example, an inclined section 1851 that is bent and obliquely extended along the circumferential direction of the stator core 110 and an axial section that is bent from the inclined section 1851 and protrudes in the axial direction. (1852).

In this embodiment, the axial section 1852 of the lead wire 180 is disposed to protrude more along the axial direction compared to the end of the connection portion 165 of the surrounding conductor segment 160.

The end of the connection part 185 and the end of the extension part 188 of the lead wire 180 are each provided with a connection end 1853 from which the coating 1802 is removed so that it can be connected to another conductor.

In this embodiment, for example, a plurality of layers may be formed inside each of the plurality of slots 116.

In this embodiment, each insertion portion 161 of the plurality of conductor segments 160 is inserted into each of the plurality of slots 116 to form eight layers (first layer L1 to eighth layer L8). ), or each insertion portion 161 of the plurality of conductor segments 160 and the insertion portion 181 of the lead wire 180 are inserted to form eight layers (first layer (L1) to eighth layer). It forms a layer (L8).

As shown in FIG. 6, inside the plurality of slots 116, the insertion portion 161 of the plurality of conductor segments 160 and the insertion portion 181 of the lead wire 180 are aligned with each other along the radial direction. It is arranged to form different layers.

The direction toward the center of the stator core 110 may be defined as the inside, and the direction away from the center of the stator core 110 may be defined as the outside.

Among the plurality of layers, the layer closest to the center of the stator core 110 is referred to as the innermost layer, and the layer located furthest from the center of the stator core 110 among the plurality of layers is referred to as the outermost layer. It can be.

In this embodiment, the first layer (L1) may be referred to as the innermost layer, and the eighth layer (L8) may be referred to as the outermost layer.

The stator coil 150 includes a plurality of phase coils each connected to each phase (U-phase, V-phase, and W-phase) of a three-phase power supply. The plurality of phase coils include, for example, a U-phase coil, a V-phase coil, and a W-phase coil.

Each of the plurality of phase coils includes a plurality of coils (parallel coils) connected in parallel to each phase.

In this embodiment, a plurality of coils connected in parallel to each phase (U phase, V phase, W phase) are composed of 8 coils for each phase coil.

Specifically, for example, the U-phase coil includes a 1U-phase coil to an 8U-phase coil, the V-phase coil includes a 1V-phase coil to an 8V-phase coil, and the W-phase coil includes a 1W-phase coil. It may be configured to include a coil to an 8W phase coil.

In this embodiment, the plurality of coils are each configured with, for example, 16 insertion portions (conductors). The 16 insertion portions of the plurality of coils are respectively connected to each other in series.

In this embodiment, the plurality of phase coils may be implemented to form a Y connection.

Both ends of the eight coils of the plurality of phase coils are each composed of lead wires 180.

Specifically, among the 16 insertion parts of each of the eight coil(s), the insertion parts at both ends are each composed of the insertion parts 181 of the lead wire 180, and the remaining 14 insertion parts are composed of seven conductor segments 160. Each is composed of an insertion portion 161.

One of the lead wires 180 at both ends of the eight coils for each phase is connected to each phase of the three-phase power supply and may be referred to as a 'power line'.

The other one of the lead wires 180 at both ends of the eight coils for each phase is simultaneously connected (Y-connected) to the other end (lead wire 180) of the other phase coil, and may be referred to as a 'neutral wire'.

In this embodiment, since the plurality of phase coils (U-phase coil, V-phase coil, and W-phase coil) are each configured in 8 parallel, each can be implemented with a total of 24 power lines and a total of 24 neutral lines.

In this embodiment, the lead wire 180 (power line and neutral wire) of each coil (24 coils) of the plurality of phase coils is the innermost line of the plurality of slots 116, that is, 24 consecutive slots 116. It may be provided on the outer layer (8th layer (L8)) and the innermost layer (1st layer (L1)), respectively.

That is, the 24 power lines and 24 neutral lines are 24 (power lines) in the innermost layer (first layer (L1)) of the 24 consecutive slots 116 along the circumferential direction of the stator core 110. 12 power lines, 12 neutral lines) may be placed, and 24 lines (12 power lines, 12 neutral lines) may be placed on the inner outermost layer (8th layer (L8)) of the same slot 116.

The 24 power lines and 24 neutral lines are each provided in 24 consecutive slots 116, and the stator core 110 is provided with 96 slots 116 along the circumferential direction, so the 24 power lines and The 24 neutral wires may each be arranged to roughly form a quadrant arc shape.

Here, the lead wire 180 disposed on the outermost layer (eighth layer (L8)) of the 24 slots 116 is referred to as the outermost lead wire 180a, and the innermost layer of the 24 slots 116 The lead wire 180 disposed in the first layer (L1) may be referred to as the innermost lead wire 180b.

Of the 24 outermost lead wires 180a, 12 are neutral wires, and the remaining 12 lead wires are power wires.

Additionally, 12 of the 24 innermost lead lines 180b are neutral lines, and the remaining 12 are power lines.

A plurality of phase coils of the stator coil 150, that is, the U-phase coil, V-phase coil, and W-phase coil, may be connected (Y-connected) by the connection ring 200.

Figure 7 is an enlarged perspective view of the connection ring of Figure 1, Figure 8 is an exploded perspective view of the connection ring of Figure 7, and Figure 9 is a plan view of the connection ring of Figure 7. As shown in FIGS. 7 to 9, the connection ring 200 includes a body 210, a power line connection portion 230, and a neutral line connection portion 250.

The body 210 is formed of an electrical insulating member.

The body 210 has a substantially circular arc shape.

The body 210 is located along the axial direction between the lead wires 180 (innermost lead wire 180b and outermost lead wire 180a) provided inside the 24 slots 116 of the stator core 110. It is configured to have a radial width into which it can be inserted.

The outer surface of the body 210 along the radial direction is formed to have a radius of curvature corresponding to the circular arc connecting the 24 outermost lead lines 180a.

The inner surface of the body 210 along the radial direction is formed to have a radius of curvature corresponding to the circular arc connecting the 24 innermost lead lines 180b.

Both sides of the body 210 (bottom surface and top surface in the drawing) along the axial direction are, for example, formed parallel to the end surface of the stator core 110.

One side (bottom surface in the drawing) of the body 210 is arranged to be in contact with the connection portion 165 of the conductor segment 160 disposed between the 24 innermost lead wires 180b and the outermost lead wire 180a. It can be.

The body 210 is configured to have a circumferential length corresponding to the 24 slots 116 of the stator core 110.

The power line connection unit 230 includes a U-phase power line connection unit 231, a V-phase power line connection unit 232, and a W-phase power line connection unit respectively connected to each phase (U-phase, V-phase, and W-phase) of the three-phase power supply. (233) is provided.

Each of the phase power

line connection portions

231, 232, and 233 is composed of an electrical conductor to enable current conduction.

Each of the phase power

line connection parts

231, 232, and 233 is an arc-shaped power line bus bar 2301, which is bent from the power line bus bar 2301 and protrudes outward along the radial direction to connect each phase of the three-phase power source. It is provided with a power connection part 2302 connected to and a coil connection part 2303 respectively protruding in the axial direction from the power line bus bar 2301.

A through hole 23021 penetrating the plate surface along the axial direction is formed in each power connection portion 2302 of each of the phase power

line connection portions

231, 232, and 233.

The coil connection portion 2303 of each phase power

line connection portion

231, 232, and 233 includes an inner coil connection portion 23031 provided on the inside of the power line bus bar 2301 and an outer coil connection portion 23032 provided on the outside. Each is provided.

Each of the inner coil connection portion 23031 and the outer coil connection portion 23032 is provided with four connection protrusions 2304 spaced apart along the circumferential direction so that four power lines can be connected to each other.

Each of the phase power

line connection parts

231, 232, and 233 is arranged to be spaced apart in the axial direction (up and down direction in the drawing).

Each of the phase power

line connection parts

231, 232, and 233 is arranged to be spaced apart along the circumferential direction of the stator core 110.

The body 210 is manufactured by injection molding by inserting the phase power

line connection parts

231, 232, and 233 spaced apart along the axial and circumferential directions.

Accordingly, a step-shaped portion 2101 is provided on one side (left area in the drawing) along the circumferential direction of the body 210.

The other side (right area in the drawing) along the circumferential direction of the body 210 has a relatively thick thickness because the phase power

line connection parts

231, 232, and 233 are arranged to be spaced apart in the axial direction.

The other side of the body 210 is provided with a plurality of protrusions 2102 curved along the radial direction to surround a portion of the power connection portion 2302. Each of the protrusions 2102 is configured to have different protrusion lengths.

The neutral wire connection portion 250 is provided on one side (upper side in the drawing) of the body 210 along the axial direction.

The neutral wire connection part 250 has an arc shape so that the lead wires 180 (neutral wires) provided in the 24 slots 116 can be connected.

The neutral wire connection portion 250 is formed of an electrical conductor to enable current conduction.

The neutral line connection portion 250 includes an arc-shaped neutral line bus bar 2501 and a coil connection portion 2503 that protrudes in the axial direction from the neutral line bus bar 2501.

The coil connection portion 2503 of the neutral line connection portion 250 includes an inner coil connection portion 25031 provided on the inside of the neutral line bus bar 2501 and an outer coil connection portion 25032 provided on the outside of the neutral line bus bar 2501. ) is provided. The inner coil connection part 25031 and the outer coil connection part 25032 are each provided with four connection protrusions 2504 so that four neutral wires can be connected to each other.

The neutral wire connection part 250 is provided on one side (upper side in the drawing) of the body 210.

The body 210 is provided with a fixing part 2103 that fixes the neutral wire connection part 250.

The fixing part 2103 includes, for example, a first fixing part 21031 and a second fixing part 21032 that protrude from the body 210 in the axial direction.

Since the first fixing part 21031 is provided in the step-shaped part 2101 of the body 210, it is formed to have a relatively long length along the axial direction.

The neutral wire connection part 250 is provided with a coupling hole 25011 penetrating along the axial direction so that the first fixing part 21031 and the second fixing part 21032 can be inserted, respectively.

Meanwhile, the connection ring 200 includes a cover 270 disposed on one side (upper side in the drawing) of the neutral wire connection portion 250 along the axial direction.

The cover 270 is formed of an electrical insulating member.

For example, the cover 270 may be formed of the same plastic as the body 210.

The cover 270 includes, for example, an arc-shaped plate 2701 and partition walls 2702 that protrude in the axial direction on the inside and outside of the plate 2701.

The partition 2702 includes, for example, an inner partition 27021 provided on the inside and an outer partition 27022 provided on the outside along the radial direction of the plate 2701.

For example, the partition wall 2702 may be configured to partition different phases among the 24 lead wires 180 continuously arranged along the circumferential direction of the stator core 110.

In this embodiment, four consecutive lead wires 180 of the 24 are arranged to form the same phase (U-phase, V-phase, and W-phase).

Of the 24 innermost lead wires 180b, 12 are neutral wires and the remaining 12 are power wires.

Additionally, 12 of the 24 outermost lead lines 180a are power lines, and the remaining 12 are neutral lines.

The 12 neutral wires of the innermost lead wire (180b) form 3 groups of 4 of the same phase, and the 12 power wires form 3 groups of 4 of the same phase, and the neutral wire runs along the circumferential direction from the power connection unit 2302 side. Groups of and power line groups are arranged alternately.

In addition, the 12 power lines of the outermost lead wire 180a form 3 groups of 4 of the same phase, and the 12 neutral lines form 3 groups of 4 of the same phase, and the power connector 2302 ) Groups of power lines and groups of neutral lines are arranged alternately along the circumferential direction from the ) side.

The innermost lead wire 180b and the inner coil connection portion 23031 are disposed between the inner surface of the plate 2701 and the inner partition wall 27021 so as to be in contact with each other. The innermost lead wire 180b and the inner coil connection portion 23031 are electrically connected to each other, for example, by bonding.

The outermost lead wire 180a and the outer coil connection portion 23032 are disposed between the outer surface of the plate 2701 and the outer partition 27022 so as to be in contact with each other. The outermost lead wire 180a and the outer coil connection portion 23032 are electrically connected to each other, for example, by bonding.

The plate 2701 is provided with penetrating portions 27011 penetrating along the axial direction so that the fixing portions 2103 can be respectively inserted.

The fixing part 2103 coupled to the penetrating part 27011 of the plate 2701 may be fixedly coupled by fixing means (not shown). The fixing portion 2103 and the penetrating portion 27011 may be integrally coupled, for example, with an adhesive or by ultrasonic fusion.

FIG. 10 is an enlarged perspective view of the supporter of FIG. 1, FIG. 11 is a view of the supporter of FIG. 10 viewed from the front, and FIG. 12 is a view of the supporter of FIG. 11 viewed from the upper side. As shown in FIGS. 10 to 12, the supporter 300 is inserted along the axial direction inside the plurality of outermost lead wires 180a along the radial direction of the stator core 110 to form the plurality of It is configured to support the outermost lead wire (180a).

The supporter 300 is formed of an electrical insulating member.

The supporter 300 has an arc shape.

The supporter 300 has an arc shape when viewed in the axial direction.

The supporter 300 has a rectangular shape with a long length when viewed along the radial direction of the stator core 110.

For example, the supporter 300 has an outer surface in contact with a plurality of outermost lead wires 180a (24 in this embodiment) corresponding to a virtual arc connecting the plurality of outermost lead wires 180a. It is configured to have a radius of curvature.

For example, the supporter 300 has a length corresponding to an arc (length) corresponding to the plurality of outermost lead lines 180a along the circumferential direction and an axial direction of the plurality of outermost lead lines 180a. It is formed in an arc shape with a width corresponding to the inclined section 1851.

The supporter 300 is formed in a square (parallelogram) shape when viewed from the outside of the supporter 300 along the radial direction of the stator core 110.

The supporter 300 includes a supporter body 3001 formed in an arc shape using an electrical insulating member.

The supporter 300 is in contact with the inner surfaces of the plurality of outermost lead wires 180a, respectively.

The supporter 300 may be coupled to the plurality of outermost lead wires 180a by a binder (eg, varnish).

As a result, the supporter 300 and the plurality of outermost lead wires 180a can be integrally and fixedly coupled.

By fixedly coupling the plurality of outermost lead wires 180a to the supporter 300, the occurrence of flow (displacement) of the plurality of outermost lead wires 180a protruding from the stator core 110 can be suppressed.

According to this configuration, it is inserted between the plurality of outermost lead wires 180a and the plurality of innermost lead wires 180b to electrically connect the plurality of outermost lead wires 180a and the plurality of innermost lead wires 180b. As the connection ring 200 is supported by the plurality of outermost lead wires 180a fixedly coupled to the supporter 300, the occurrence of lateral flow of the connection ring 200 can be suppressed.

The supporter 300 may be coupled to a plurality of conductor segments 160 in contact with the inside of the supporter 300 by the coupling material.

As a result, the occurrence of radial flow in the supporter 300 and the plurality of outermost lead wires 180a can be suppressed.

According to this configuration, the occurrence of lateral flow in the connection ring 200 can be further suppressed.

The supporter 300 includes a penetrating portion 3003 that penetrates the supporter body 3001.

As a result, the binder can be easily introduced into the radial inside of the supporter 300.

Additionally, the weight of the supporter 300 can be reduced.

For example, the penetrating portion 3003 may be implemented as a plurality of spaced apart portions along the circumferential direction of the supporter 300.

As a result, the binder is intermittently introduced through the plurality of penetrating portions 3003, so that a plurality of joints can be formed intermittently by the binder.

The supporter 300 has both side wall portions 3005 inclined to correspond to the inclined section 1851 of the plurality of outermost lead wires 180a.

Accordingly, the supporter 300 has a parallelogram shape when viewed from the outside of the supporter 300 along the radial direction of the stator core 110.

In this embodiment, the inclined section 1851 of the plurality of outermost lead wires 180a is approximately 20 to 25 degrees with respect to the end surface of the stator core 110, so that both side walls of the supporter 300 (3005) is formed at an angle of approximately 20 to 25 degrees with respect to the end surface of the stator core 110.

As a result, the area where the supporter 300 protrudes to both sides of the plurality of outermost lead wires 180a along the circumferential direction of the stator core 110 is suppressed, thereby reducing the weight of the supporter 300 and the amount of material input. can do.

The supporter 300 has a depression 3007 that is depressed along the thickness direction of the supporter body 3001.

As a result, the binding material is suppressed from flowing down and remains inside the recessed portion 3007, so that the coupling between the binding material, the supporter 300, and the plurality of outermost lead wires 180a can be further strengthened.

Additionally, the weight of the supporter 300 may be reduced to correspond to the size of the depression 3007.

The depression 3007 includes an outer depression 30071 formed on the outer surface of the supporter body 3001.

For example, the recessed portion 3007 may be formed on one side of the penetrating portion 3003 along the axial direction.

In this embodiment, the penetrating portion 3003 is provided on the side farthest from the stator core 110 (upper side in the drawing) along the axial direction, and the penetrating portion 3003 is provided on the side closer to the stator core 110 (lower side in the drawing). A depression 3007 is provided.

The depression 3007 is formed to have a long length along the circumferential direction.

In this embodiment, the depression 3007 is implemented as one piece with a length corresponding to the entire length of the supporter 300.

The supporter 300 includes a guide 3009 that protrudes from the surface of the supporter body 3001 so as to contact the plurality of outermost lead wires 180a.

Specifically, the guide 3009 protrudes from the outer surface of the supporter body 3001 in the thickness direction and extends obliquely in the axial direction.

In this embodiment, the guides 3009 are formed at both ends of the supporter 300 along the circumferential direction.

The guides 3009 at both ends of the supporter 300 are positioned along one side of the first outermost lead line 180a and the 24th outermost side of the 24 outermost lead lines 180a along the circumferential direction of the stator core 110. Each may be contacted to one side of the lead wire 180a.

As a result, the supporter 300 can be coupled at an accurate position inside the plurality of outermost lead wires 180a.

Additionally, relative movement of the supporter 300 along the circumferential direction with respect to the plurality of outermost lead wires 180a can be suppressed.

FIG. 13 is a diagram showing a combined state of the outermost lead wire and supporter of FIG. 2, and FIG. 14 is a cross-sectional view of the supporter area of FIG. 2. As shown in FIG. 13, the plurality of outermost lead wires 180a are each inserted into the inner outermost layer of the corresponding slot 116.

Here, each insertion portion 181 of the plurality of outermost lead wires 180a is coupled to protrude a predetermined length from the end of the stator core 110 along the axial direction.

The inclined section 1851 of the connection portion 185 of the plurality of outermost lead wires 180a is inclined in one direction (counterclockwise in the drawing) along the circumferential direction of the stator core 110 from the insertion portion 181. It extends, and the axial section 1852 is bent from the inclined section 1851 and is arranged to extend in the axial direction.

The connection end 1853 of the connection portion 185 (axial section 1852) of the lead wire 180 is electrically connected to the connection ring 200.

The supporter 300 is inserted into the plurality of outermost lead wires 180a along the radial direction of the stator core 110.

The supporter 300 is inserted along the axial direction inside the axial section 1852, and the guides 3009 provided at both ends of the supporter 300 are inclined to the plurality of outermost lead wires 180a. It is inserted obliquely while contacting the section 1851.

Meanwhile, as shown in FIG. 14, the supporter 300 is configured to have a thickness that decreases along the axial direction toward the stator core 110.

Specifically, the supporter body 3001 is configured to include a thickness reduction section 3002 whose thickness is reduced toward the stator core 110 along the axial direction.

The inner surface of the supporter body 3001 forms a flat surface, and the thickness reduction section 3002 is formed by cutting a portion of the outer surface of the supporter body 3001 to reduce the thickness.

As a result, the inner surface of the supporter body 3001 is supported by the conductor segment 160, and the plurality of outermost lead wires 180a are in contact with the thickness reduction section 3002 of the outer surface of the supporter body 3001. As the distance from the stator core 110 along the axial direction increases, it may be elastically deformed to spread outward along the radial direction of the stator core 110.

According to this configuration, the plurality of outermost lead wires 180a come into close contact with the supporter 300 through their own elastic force, thereby increasing the mutual coupling force.

In addition, the plurality of outermost lead wires 180a are spaced far apart from the inner conductor segment 160 in the radial direction, so that it is advantageous to secure insulation distances between different phases.

The thickness reduction section 3002 of the supporter 300 may be formed to correspond to half the width of the supporter body 3001 along the axial direction.

In this embodiment, the penetrating portion 3003 is formed, for example, in a section (upper section in the drawing) having a certain thickness of the supporter body 3001, and the recessed portion 3007 is formed in the thickness reduction section. (3002).

By this configuration, the conductor segment 160 and/or the lead wire 180 are respectively inserted and coupled to the inside of each slot 116 of the stator core 110. Here, as described above, the lead wire 180 is disposed inside 24 consecutive slots 116 among the 96 slots 116.

The conductor segments 160 and lead wires 180 are connected (welded) in series to each other in a preset number to form a plurality of coils (24 coils in this embodiment).

Each of the 24 coils is provided with lead wires 180 (power wire and neutral wire) at both ends, and a plurality of (7) conductor segments 160 are connected in series between the power wire and the neutral wire. In this embodiment, the neutral wire and power wire of the 24 coils are provided in the innermost layer (first layer (L1)) and the outermost layer (8th layer (L8)) of the same 24 slots 116, respectively. do.

Meanwhile, the supporter 300 is inserted along the axial direction into the radial inner side of the outermost lead wire 180a of the 24 slots 116.

The supporter 300 has guides 3009 at both ends along the circumferential direction in an inclined section 1851 of the first outermost lead line 180a and the last 24th outermost lead line 180a of the plurality of outermost lead lines 180a. ) and move relative to each other, so that the supporter 300 can be coupled to be disposed at an exact position inside the plurality of outermost lead wires 180a.

As the thickness reduction section 3002 of the supporter 300 is inserted into the radial inner side of the plurality of outermost lead wires 180a, the plurality of outermost lead wires 180a extend in the radial direction of the stator core 110. It may spread outward.

After the supporter 300 is coupled, the connection ring 200 may be inserted between the innermost lead wire 180b and the outermost lead wire 180a.

The plurality of innermost lead wires 180b and the plurality of outermost lead wires 180a are respectively connected (joined) to the power line connection part 230 and the neutral wire connection part 250 of the connection ring 200 so as to conduct electricity by welding. ) can be.

Meanwhile, when the connection between the connection ring 200 and the innermost lead wire 180b and the outermost lead wire 180a is completed, a binding material ( Varnish) can be injected (applied).

The coupling material is inserted between the supporter 300 and the outermost lead wire 180a to form a coupling portion 3010 (outer coupling portion 30101).

As a result, the supporter 300 and the outermost lead wire 180a can be integrally coupled.

According to this configuration, the occurrence of lateral flow in the plurality of outermost lead wires 180a can be suppressed.

Additionally, the coupling material is inserted between the supporter 300 and the conductor segment 160 radially inside the supporter 300 to form a coupling portion 3010 (inner coupling portion 30102).

As a result, the supporter 300 and the conductor segment 160 can be integrally coupled.

According to this configuration, the supporter 300 is supported by the conductor segment 160, so that lateral flow in the supporter 300 and the plurality of outermost lead wires 180a can be suppressed.

Hereinafter, modifications of the supporter of the present invention will be described with reference to FIGS. 15 to 27, respectively.

Figure 15 is a modified example of the supporter of Figure 1, and Figure 16 is a view of the supporter of Figure 15 seen from the front. As shown in FIGS. 15 and 16, the supporter 300a includes a supporter body 3001 formed in an arc shape using an insulating member.

The supporter body 3001 has a side wall portion inclined to correspond to the inclined section 1851 of the plurality of outermost lead lines 180a.

Meanwhile, a plurality of guides 3009a are formed on the supporter body 3001 so as to contact each inclined section 1851 of the plurality of outermost lead wires 180a.

For example, the plurality of guides 3009a may be formed to correspond to the number of the plurality of outermost lead wires 180a.

In this embodiment, since the number of outermost lead wires 180a is 24, the number of guides 3009a may be, for example, 25.

As a result, the separation distance between the plurality of outermost lead wires 180a can be stably maintained.

In addition, the coupling force of the coupling portion 3010a (outer coupling portion 30101a) formed by a coupling material between the plurality of guides 3009a of the supporter 300 and the plurality of outermost lead wires 180a will be further improved. You can.

Figure 17 is another modification of the supporter of Figure 1, and Figure 18 is a view of the supporter of Figure 17 seen from the front. As shown in FIGS. 17 and 18, the supporter 300b includes a supporter body 3001 formed in an arc shape using an insulating member.

The supporter body 3001 has a side wall portion 3005 inclined to correspond to the inclined section 1851 of the plurality of outermost lead wires 180a.

In this embodiment, a penetrating portion 3003 may be formed in the supporter body 3001 by penetrating the plate surface.

The supporter body 3001 may be provided with a depression 3007 that is depressed in the thickness direction.

Meanwhile, a plurality of guides 300b are formed on the supporter body 3001 to contact the inclined section 1851 of the plurality of outermost lead wires 180a.

For example, the plurality of guides 300b may be implemented as a plurality of guides spaced apart at preset intervals along the circumferential direction of the supporter body 3001.

The plurality of guides 300b may be formed at, for example, seven locations.

The plurality of guides 300b may include, for example, a first guide 300b1 continuous along the axial direction and a separated second guide 300b2.

The first guide 300b1 may be provided at both ends (side walls) of the supporter body 3001 along the circumferential direction.

The second guide 300b2 may be formed to be spaced apart from the first guide 300b1 along the circumferential direction.

The second guide 300b2 may be formed to be respectively disposed between the successive penetrating portions 3003.

The second guide 300b2 may be divided into two parts along the axial direction with the depression 3007 between them.

Here, the spacing between the first guide (300b1) and the second guide (300b2) and the second guide (300b2) and the second guide (300b2) may be configured to be the same, for example.

The gap between the first guide (300b1) and the second guide (300b2), and the gap between the second guide (300b2) and the second guide (300b2) are such that four of the outermost lead wires (180a) can be accommodated. It can be configured as an interval.

According to this configuration, four outermost lead wires 180a connected to the same phase are inserted between two guides 300b adjacent to each other, and four outermost lead wires 180a connected to different phases are inserted. By providing the second guides 300b2, the outermost lead wires 180a(s) connected to different phases can be prevented from approaching each other.

In this embodiment, the plurality of guides 300b are implemented as seven, but the guide is not limited thereto.

Figure 19 is another modified example of the supporter of Figure 1, and Figure 20 is a view of the supporter of Figure 19 seen from the front. As shown in FIGS. 19 and 20, the supporter 300c includes a supporter body 3001 formed in an arc shape with an insulating member.

The supporter 300 includes a plurality of penetrating portions 3003 that penetrate the supporter body 3001.

The supporter 300 has a depression 3007 (outer depression 30071) recessed in the thickness direction on the outer surface of the supporter body 3001.

Meanwhile, a guide 3009c is formed on the supporter body 3001 to contact the inclined section 1851 of the plurality of outermost lead wires 180a.

For example, the guide 3009c may be formed at one end along the circumferential direction of the supporter body 3001.

In this embodiment, the guide 3009c is formed at the left end of the supporter body 3001, but this is only an example and is not limited thereto.

Although not specifically shown in the drawings, a guide may be formed on the right end of the supporter body 3001.

According to this configuration, the supporter 300 can be coupled at an accurate position inside the plurality of outermost lead wires 180a.

Additionally, relative movement of the supporter 300 with respect to the plurality of outermost lead wires 180a can be suppressed.

FIG. 21 is a front view of another modification of the supporter of FIG. 1, FIG. 22 is a front view of another modification of the supporter of FIG. 1, FIG. 23 is a front view of another modification of the supporter of FIG. 1, and FIG. 24 is a front view of another modification of the supporter of FIG. 1.

As shown in FIG. 21, the supporter 300d includes a supporter body 3001 formed in an arc shape using an insulating member.

The supporter 300 includes a plurality of penetrating portions 3003d that penetrate the supporter body 3001.

The plurality of penetrating portions 3003d may be implemented in a square shape or a parallelogram shape.

The supporter 300 has a depression 3007d that is depressed in the thickness direction of the supporter body 3001.

The depression 3007d may be implemented as a rectangular shape with a long length along the circumferential direction.

In this embodiment, although not specifically shown in the drawings, the supporter 300d may be provided with a guide 3009 that contacts the plurality of outermost lead wires 180a, as described above.

Meanwhile, both ends of the supporter body 3001 along the circumferential direction may be implemented as having both side wall portions 3005d respectively disposed along the axial direction.

Here, since the supporter 300 is inserted into the radial inner side of the plurality of outermost lead wires 180a, one end (right end in the drawing) of the supporter body 3001 has the upper side of the plurality of outermost lead wires (180a). 180a), the other end of the supporter body 3001 (left end in the drawing) is in contact with the left inclined section 1851 of the plurality of outermost lead lines 180a. comes into contact

Accordingly, the lower edge of the right end of the supporter body 3001 protrudes to the right from the inclined section 1851 on the right side of the plurality of outermost lead lines 180a, and the upper edge of the left end of the supporter body 3001 The edge protrudes to the left of the inclined section 1851 of the left outermost lead line 180a of the plurality of outermost lead lines 180a.

According to this configuration, the circumferential length of the supporter 300 increases, so that the supporter 300 includes a plurality of conductor segments 160 provided inside the plurality of outermost lead wires 180a along the radial direction. By being combined, the coupling of the supporter 300 becomes more secure and the flow of the supporter 300d can be effectively suppressed.

As a result, the plurality of outermost lead wires 180a, which are coupled to the supporter 300d with a binder, can be supported more stably.

As shown in FIG. 22, the supporter 300e of this embodiment includes a supporter body 3001 formed in an arc shape with an insulating member.

The supporter body 3001 has both side wall portions 3005 inclined to correspond to the inclined section 1851 of the plurality of outermost lead wires 180a.

The supporter 300 includes a guide 3009 that contacts the plurality of outermost lead wires 180a.

For example, the guide 3009 may protrude from the outer surfaces of both ends of the supporter body 3001 and extend obliquely with respect to the axial direction.

Meanwhile, the supporter 300 has a penetrating portion 3003e formed to penetrate the supporter body 3001.

For example, the penetrating portions 3003e may be implemented in plural numbers spaced apart along the circumferential direction of the supporter body 3001.

In this embodiment, the plurality of penetrating portions 3003e are illustrated as five, but this is only an example and is not limited thereto.

For example, the plurality of penetrating portions 3003e may be implemented in a parallelogram shape.

In this embodiment, the plurality of penetrating portions 3003e are illustrated as having a parallelogram shape, but are not limited thereto and may also be implemented as a square shape.

For example, the plurality of penetrating portions 3003e are configured to have a width of more than half the width of the supporter body 3001.

As a result, the weight of the supporter 300e can be significantly reduced.

Additionally, the binder can be easily introduced into the radial inner side of the supporter 300e.

As shown in FIG. 23, the supporter 300f of this embodiment includes a supporter body 3001 formed in an arc shape with an insulating member.

The supporter 300f is provided with a guide 3009 that contacts the plurality of outermost lead wires 180a.

Meanwhile, the supporter (300f) has a penetrating portion (3003f) formed to penetrate the supporter body (3001).

For example, the penetrating portions 3003f may be implemented in plural numbers spaced apart along the circumferential direction of the supporter body 3001.

In this embodiment, the plurality of penetrating portions 3003f include a first penetrating portion 3003f1 biased toward one side (lower side in the drawing) and a second penetrating portion 3003f2 biased toward the other side (upper side in the drawing) along the axial direction. ) can be provided.

As a result, when the binder is introduced, a plurality of coupling parts spaced apart from each other along the axial direction and the circumferential direction can be formed.

The first through portion 3003f1 and the second through portion 3003f2 may be arranged alternately along the circumferential direction.

In this embodiment, the plurality of penetrating portions 3003f are illustrated as five, but this is only an example and is not limited thereto.

For example, the plurality of penetrating portions 3003f may be implemented in a parallelogram shape.

In this embodiment, the plurality of penetrating portions 3003f are illustrated as having a parallelogram shape, but are not limited thereto and may also be implemented as a square shape.

The plurality of penetrating portions 3003f are, for example, configured to have a width of more than half the width of the supporter body 3001.

As a result, the weight of the supporter 300 can be significantly reduced.

Additionally, the binder can be easily introduced into the radial inner side of the supporter 300f.

As shown in FIG. 24, the supporter 300g of this embodiment includes a supporter body 3001 formed in an arc shape with an insulating member.

For example, the guide 3009 may protrude from the outer surfaces of both ends of the supporter body 3001 along the circumferential direction and extend obliquely with respect to the axial direction.

For example, the penetrating portions 3003 may be implemented in plural numbers spaced apart along the circumferential direction of the supporter body 3001.

As a result, the binder can be easily introduced into the radial inside of the supporter 300 through the plurality of penetrating portions 3003.

According to this configuration, a plurality of inner coupling portions may be formed on the radial inner side of the supporter 300, which are coupled to the inner surface of the supporter 300 and the plurality of conductor segments 160 using the coupling material.

The plurality of penetrating portions 3003 may be implemented in, for example, a square shape or a parallelogram shape.

In this embodiment, the plurality of penetrating portions 3003 are illustrated as five, but this is only an example and is not limited thereto.

Meanwhile, the supporter 300 includes a depression 3007ha that is depressed along the thickness direction of the supporter body 3001.

For example, the recessed portions 3007g may be implemented in plural numbers spaced apart along the circumferential direction.

The plurality of depressions 3007g may be implemented in a square shape or a parallelogram shape.

The recessed portion 3007g may include, for example, an outer recessed portion 30071g that is recessed in the thickness direction on the outer surface of the supporter body 3001.

As a result, the flow of the binder on the outer surface of the supporter 300 can be suppressed and the internal stagnation of the outer depression 30071g can be increased, so that the supporter 300 and the plurality of outermost lead wires 180a The combination can be achieved firmly.

Figure 25 is a front view of another modification of the supporter of Figure 1, and Figure 26 is a cross-sectional view of the supporter of Figure 25. As shown in FIGS. 25 and 26, the supporter 300h of this embodiment includes a supporter body 3001 formed in an arc shape with an insulating member.

The plurality of penetrating portions 3003 are illustrated in a parallelogram shape, but are not limited thereto.

The supporter body 3001 is configured to include a thickness reduction section 3002 whose thickness decreases as it moves toward the stator core 110 along the axial direction.

The inner surface of the supporter body 3001 forms a flat surface, and the thickness reduction section 3002 is formed on the outer surface of the supporter body 3001.

Meanwhile, the supporter 300 includes a recessed portion 3007h that is recessed along the thickness direction of the supporter body 3001.

For example, the recessed portion 3007h may include an inner recessed portion 30072h formed to be recessed along the thickness direction on the inner surface of the supporter body 3001.

For example, the depression 3007h may be implemented as one piece having a long length along the circumferential direction of the supporter body 3001.

The depression 3007h is illustrated as having a parallelogram shape, but is not limited thereto.

As a result, the weight of the supporter 300h can be reduced.

In addition, the flow of the binder material flowing into the radial inner side of the supporter 300h through the plurality of penetrating parts 3003 is suppressed and the amount of accumulation in the depression 3007 increases, so that the supporter 300h and The supporter 300h can be firmly coupled to the conductor segment 160 inside the radial direction.

Figure 27 is a perspective view of another modification of the supporter of Figure 1, Figure 28 is a cross-sectional view of the supporter of Figure 27 in a combined state, Figure 29 is a variation of the stopper of Figure 27, and Figure 30 is a diagram of the stopper of Figure 27. This is another variation. As shown in FIGS. 27 and 28, the supporter 300i of this embodiment includes a supporter body 3001 formed in an arc shape with an insulating member.

For example, the guides 3009 may protrude from the outer surfaces of both ends of the supporter body 3001 along the circumferential direction and extend obliquely with respect to the axial direction.

Meanwhile, the supporter 300 may be provided with a stopper 3008 protruding along the radial direction at an end farthest from the stator core 110 along the axial direction.

As a result, the insertion depth of the supporter 300i inserted along the axial direction may be limited.

The stopper 3008 may be in contact with a plurality of conductor segments 160 inside the radial direction of the supporter 300i.

The stopper 3008 may be formed over the entire length along the circumferential direction of the stopper 3008.

Accordingly, when the supporter 300i is inserted along the axial direction inside the plurality of outermost lead wires 180a in the radial direction, the stopper 3008 is connected to the conductor segment 160 inside the supporter 300i. By contacting , the axial insertion depth of the supporter 300i may be limited.

As a result, the supporter 300i is excessively inserted into the stator core 110 along the axial direction, and the plurality of outermost lead wires 180a are excessively spread outward along the radial direction of the stator core 110. Losing can be suppressed.

In this embodiment, the case where the stopper 3008 is formed over the entire length of the supporter body 3001 is exemplified, but the present invention is not limited thereto.

In addition, in this embodiment, the stopper 3008 is configured to protrude inward from the end of the supporter body 3001 along the radial direction and extend close to the plurality of innermost lead lines 180b. Although the case is illustrated, this is only an example and is not limited thereto.

As shown in FIG. 29, the supporter 300j of this embodiment is comprised of a cylindrical supporter body 3001 and a stopper 3008j protruding along the radial direction from an end of the supporter body 3001. In this embodiment, the stoppers 300j are composed of a plurality of stoppers spaced apart from each other along the circumferential direction.

As shown in FIG. 30, the supporter 300k of this embodiment includes an arc-shaped supporter body 3001 and a stopper 3008k protruding inward from an end of the supporter body 3001 along the radial direction. Here, the stopper 300k protrudes inward along the radial direction of the stator core 110 and includes conductor segments 160 (e.g., layers 6 and 7) radially inside the supporter body 3001. It may be configured to be in axial contact with the connection portion 165 of one conductor segment 160 of a length such that the axial insertion depth may be limited.

In the above, specific embodiments of the present invention have been shown and described. However, since the present invention can be implemented in various forms without departing from its spirit or essential characteristics, the embodiments described above should not be limited by the specific details for carrying out the invention.

In addition, even if the embodiments are not individually listed in the detailed description described above, they should be interpreted broadly within the scope of the technical idea defined in the attached claims. In addition, all changes and modifications included within the technical scope of the above claims and their equivalents shall be encompassed by the attached claims.

Claims

A stator core provided with a plurality of slots;

a stator coil including a plurality of conductor segments inserted into the plurality of slots and a plurality of outermost lead wires inserted into the outermost interior of some of the plurality of slots;

a connection ring connected to the plurality of outermost lead wires; and

A stator of a rotating electric machine comprising: a supporter axially inserted into the inside of the plurality of outermost lead wires along the radial direction of the stator core to support the plurality of outermost lead wires.
According to paragraph 1,

The supporter has a supporter body formed in an arc shape with an insulating member,

The supporter body is a stator of a rotating electric machine having a thickness reduction section in which the thickness is reduced toward the stator core along the axial direction.
According to paragraph 2,

The plurality of outermost lead lines each have an inclined section inclined with respect to the circumferential direction,

The supporter body is a stator of a rotating electric machine having a side wall portion inclined to correspond to the inclined section of the plurality of outermost lead wires.
According to paragraph 2,

The supporter is a stator of a rotating electric machine including a penetrating portion formed to penetrate the supporter body.
According to paragraph 4,

The stator of a rotating electric machine wherein the penetrating portion has a long hole shape having a long length along the circumferential direction of the stator core.
According to paragraph 4,

A stator of a rotating electric machine wherein the penetrating portion is composed of a plurality of penetrating portions spaced apart along the circumferential direction of the stator core.
According to paragraph 2,

The supporter is a stator of a rotating electric machine further comprising a recessed portion along the thickness direction of the supporter body.
In clause 7,

The stator of a rotating electric machine wherein the depression includes an inner depression formed on an inner surface of the supporter body along the radial direction of the stator core or an outer depression formed on an outer surface of the supporter body.
In clause 7,

The stator of a rotating electric machine wherein the recessed portion is formed to have a long length along the circumferential direction of the stator core.
In clause 7,

A stator of a rotating electric machine wherein the recessed portion consists of a plurality of recessed portions spaced apart from each other along the circumferential direction of the stator core.
According to paragraph 2,

The supporter is a stator of a rotating electric machine including a guide protruding from a surface of the supporter body so as to be able to contact the plurality of outermost lead wires.
According to clause 11,

The guide is a stator of a rotating electric machine provided at one end or both ends of the supporter body along the circumferential direction of the stator core.
According to clause 11,

The guide is a stator of a rotating electric machine formed to contact each of the plurality of outermost lead wires.
According to clause 11,

The guide is a stator of a rotating electric machine consisting of a plurality of guides spaced apart along the circumferential direction of the stator core.
According to paragraph 2,

The supporter is a stator of a rotating electric machine having a stopper protruding along a radial direction at an end farthest from the stator core along an axial direction.
According to any one of claims 1 to 15,

The stator coil further includes an outer coupling portion formed by a coupling material to couple the supporter and the plurality of outermost lead wires to each other.
According to any one of claims 1 to 15,

The stator coil further includes an inner coupling portion formed by a coupling material to couple a plurality of conductor segments disposed inside the supporter along the radial direction of the stator core and the supporter to each other.
According to any one of claims 1 to 15,

The stator coil includes a plurality of phase coils each connected to a three-phase power supply,

The stator coil further includes an innermost lead wire inserted into the innermost side of a slot into which the outermost lead wire is inserted along the radial direction of the stator core,

The connection ring has a power line connection portion connected to the three-phase power supply and a neutral line connection portion simultaneously connecting the plurality of phase coils, and the power line connection portion and the neutral line connection portion are connected to the innermost lead wire and the outermost lead wire. A stator of a rotating electric machine that is connected to each other to conduct electricity.
According to clause 18,

The connection line ring is,

A body formed of an insulating member; and

A cover formed of an insulating member and coupled to the body spaced apart from the body along the axial direction;

The power line connection portion is insert-injected into the body to be mutually insulated,

The neutral wire connection part is a stator of a rotating electric machine coupled between the body and the cover.