JP3514948B2 - Stator for rotating electric machine and method of manufacturing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator for a rotary electric machine and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, in a stator for a rotary electric machine formed by using a so-called plural divided cores, that is, unit cores, a plurality of divided cores are formed by winding a winding conductor around a winding winding portion in advance. A winding conductor extending from a winding portion in which the ends of the winding conductor extending from the winding portion of each unit core are wound around another corresponding one or more unit cores by making an annular stator core by combining the cores in an annular shape. And electrically connected to the end portion of to complete the desired wiring.

However, in the conventional method of forming the winding portion on each unit core, the work of electrically connecting the winding portions of each unit core is very complicated, and the manufacturing efficiency is extremely poor.

Therefore, the applicant did not form a connecting portion on the crossover connecting the winding portions between the unit cores according to Japanese Patent Application No. 7-316418 filed on Dec. 5, 1995.
We proposed a method of continuously winding the winding conductors around the winding windings of a plurality of unit cores held in a row in a jig. By using this method, a crossover wire connecting the winding portions between the unit cores can be formed during the winding process. Therefore, the connecting work for forming the crossover, which is required in the past, is not required.

[0005]

However, the previous application does not disclose how to form a complicated wiring called parallel connection as shown in FIG. When the parallel connection is realized by the conventional method or structure, 6
This leads to a situation in which the winding conductors of the book must be connected at one place, making the connection troublesome and increasing the possibility of a connection failure at the connection portion.

It is an object of the present invention to provide a stator for a rotary electric machine having a parallel connection in which the number of winding conductors connected at the connecting portion is small.

Another object of the present invention is to provide a method of manufacturing a stator for a rotary electric machine, which comprises a parallel connection unit in which the number of winding conductors connected at the connection portion is small.

Another object of the present invention is to provide a method of manufacturing a stator for a rotary electric machine, which can easily carry out a winding work while easily securing a crossover wire of a length necessary for a connection work later. is there.

[0009]

One stator for a rotating electric machine, which is an object of improvement of the present invention, is a yoke forming a winding winding portion around which a winding is wound and a part of an annular yoke portion. 2n (n is a multiple of 3) or m × n (m
Is an even number of 4 or more, and n is a multiple of 3)], and a stator core is used in which the winding winding portion is located inside and the yoke portion is combined so as to form an annular yoke portion. Further, it has a plurality of winding portions configured by winding winding conductors wound around the winding winding portions of 2n or m × n unit cores. Then, among the winding parts wound around the winding winding part of 2n or m × n unit cores, n adjacent winding parts forming an n-phase magnetic pole are set as a unit and n The windings of the individual winding parts are star-connected to form two or m star connection units.

Neutral points of two or m star connection units are connected to each other to form one or m / 2 parallel connection units, and n-phase magnetic poles included in the parallel connection units. Each of the winding portions constituting the above is connected to the corresponding lead wires for n phases.

In the present invention, n winding conductors are wound around the continuous n unit cores to form a first n-phase winding portion. A second n-phase winding portion is formed by continuously winding n winding conductors on the n unit cores that are continuous after the continuous n unit cores. . N crossovers connecting between the first n-phase winding portion and the second n-phase winding portion are formed by n winding conductors and electrically connected to each other. Thus, the parallel connection unit is configured.

With the structure of the conventional stator for a rotating electric machine, when connecting the neutral points of two star connection units, the neutral points cannot be connected unless 2n winding conductors are connected. However, in the configuration of the invention, the n crossover wires that connect the first n-phase winding portion and the second n-phase winding portion are electrically connected to each other. Alone 2
Neutral points of two star connection units are connected to each other 1
One parallel connection unit will be configured.
Therefore, according to the present invention, the number of winding conductors to be connected at the connecting portion in the case of forming a parallel connection is smaller than in the conventional case, and the possibility of connection failure at the connecting portion is reduced.

In the case of forming a parallel connection including m / 2 parallel connection units, the first parallel connection unit is first formed, and the 2n unit cores used in the first parallel connection unit are formed. In the same manner as the configuration of the first parallel connection unit, n winding conductors are continuously wound on the 2n different unit cores continuous with each other to form the next parallel connection unit. ing. If there is no remaining parallel connection unit, the winding of the winding conductor is completed in the next parallel connection unit. However, if there is a remaining parallel connection unit, the remaining parallel connection unit also has the remaining parallel connection unit n. It is constructed continuously by using two winding conductors.

When a parallel connection including m / 2 parallel connection units is constructed, the winding start end and the winding end end of the n winding conductors correspond to the n lead wires, respectively. The n connecting wires that are electrically connected and connect between the two parallel connection units are electrically connected to the corresponding n lead wires.

Even when a parallel connection including m / 2 parallel connection units is constructed in this way, 1
Only by electrically connecting the n crossover wires that connect the first n-phase winding portion and the second n-phase winding portion of the two parallel connection units to each other, It is possible to configure one parallel connection unit in which the neutral points of two star connection units are connected to each other. In addition, the n crossovers connecting between the two parallel connection units correspond to n
Each of the winding portions of the star connection unit can be connected to the corresponding n-phase lead wires only by electrically connecting the lead wires. Therefore, according to the present invention, the number of winding conductors to be connected in each connecting portion in the case of forming a parallel connection is smaller than that in the conventional case, and the possibility of connection failure in the connecting portion can be reduced.

When manufacturing the above-mentioned stator for a rotary electric machine, n winding conductors coated with an insulating coating are used. And first, a plurality (2n or m × n)
The individual unit cores are arranged as an example so that the winding winding portions face the same direction. When arranging the unit cores in a line, it is preferable to prepare a jig that facilitates combining a plurality of unit cores in a ring shape later, and hold each unit core in this jig.

Next, n winding conductors are respectively wound around n continuous unit cores (used for the first parallel connection unit when there are a plurality of parallel connection units) for the first n phase. Winding portions (first n winding portions) are formed. Next, the n winding conductors are respectively drawn out by the length for forming the n crossovers. After that, the above-mentioned continuous n unit cores are followed by n continuous unit cores.
Turn each winding winding conductors in succession of the (parallel-connecting unit is used for the first parallel-connecting unit in some cases several) of the second n phases winding portion (next n Winding part) is formed.

When there are a plurality of units for parallel connection, n winding conductors are further drawn out by a length for forming n crossovers, and then 2n used for the first unit for parallel connection. 2n continuous to one unit core
N individual winding conductors are continuously wound around the individual unit cores in the same procedure as the procedure for forming the first and second n-phase winding portions of the first parallel connection unit. Then, the winding portions for the first and second n phases of the next parallel connection unit are formed. Similarly, the winding portions for the first and second n phases of the remaining units for parallel connection are formed using n winding conductors.

The first n of the parallel connection unit
Insulation coating of n crossover wires that connect between the winding part for the phase and the winding part for the second n-phase (first n winding parts and the next n winding parts) The portions are partially removed to expose the conductors, and the exposed conductors are electrically connected to each other to form a parallel connection unit. The winding start end and the winding end end of the n winding conductors are electrically connected to the corresponding n lead wires. When there are a plurality of units for parallel connection, two units for parallel connection are connected n
The connecting wires are partially removed to expose the conductors, and the exposed conductors are electrically connected to the corresponding n lead wires. Finally, a plurality of unit cores are combined so that each yoke portion constitutes an annular yoke portion.

According to such a manufacturing method, the n connecting the first n-phase winding portion and the second n-phase winding portion is connected.
A single parallel connection unit in which the neutral points of the two star connection units are connected to each other can be configured only by electrically connecting the crossover wires of one another to each other. Further, even when configuring a parallel connection including two or more parallel connection units, it is only necessary to electrically connect the n crossover wires that connect the two parallel connection units to the corresponding n lead wires. Thus, each winding portion of the star connection unit can be connected to the corresponding n-phase lead wire.

Therefore, according to the method of the present invention, the number of winding conductors to be connected at the connecting portion in the case of forming a parallel connection is smaller than in the prior art, and the possibility of connection failure at the connecting portion is reduced. be able to.

In the method for manufacturing a stator for a rotary electric machine according to the present invention as described above, a plurality of (2n or m × n)
A plurality of winding locking portions are arranged adjacent to the row of (unit) unit cores, and n winding wires are formed by locking the n winding conductors to the corresponding winding locking portions. It is preferable. With this configuration, it is possible to easily secure a crossover wire having a length necessary for a connection work later by simply locking the winding conductor in the winding locking portion. Especially, when the winding conductor is wound around the next unit core while the winding conductor is locked in the winding locking portion, the winding conductor does not sag even if a crossover wire is secured. The winding conductor can be wound. Therefore, the work of winding the winding conductor around each unit core is facilitated. The structure of the winding locking portion is arbitrary.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an example of an embodiment of a stator for a rotary electric machine and a manufacturing method thereof according to the present invention will be described with reference to FIG.
It will be described in detail with reference to FIGS.

In the present invention, as shown in FIG. 1, a set of pins P1, P2 and P3 and a pin P are provided on a plate 13 which is oriented horizontally.
A set of 4, P5, P6 and a set of pins P7, P8, P9,
The set of pins P10, P11, P12 are diagonally present in each set, and the pins P1, P4, P7, and P10 are aligned in a straight line, and the pins P2, P5, P8, and P
11 are arranged in a straight line, and pins P3, P6, P9, and pin P12
Are installed so that they line up in a straight line. On the plate 13, next to the arrangement of the pins P1 to P12, the pin P
A pair of P4, PP5, PP6 and pins PP7, PP8, P
The pair of pins PP4, PP5, PP6 is located next to the pair of pins P4, P5, P6, and the pair of pins PP7, PP
A set of 8 and PP9 exists next to the set of pins P7, P8 and P9, and in each set, the pins exist obliquely as shown in the drawing, and the pins PP4 and PP7 are aligned and the pin PP
5 and pin PP8 are aligned, and pin PP6 and pin P are
P9 is projected so that it is aligned in a straight line. Further, a neutral point connection point 30 is provided between the set of pins P1, P2, P3 and the set of pins P4, P5, P6, and pins P7, P8 are provided.
, P9 and a set of pins P10, P11, P12 are provided with a neutral point connecting point 31.

Further, the unit cores S1, S2, S3, ... S11, S12 can be set in a row on the side opposite to the side where the row of pins PP4 ... PP9 exists with respect to the arrangement of the pins P1 to P12. A unit core set jig 14 is provided.

This unit core set jig 14 is used in Japanese Patent Application No.
No. 316418, which is the same as the jig disclosed in detail, for example, as shown in FIGS. 2A and 2B, a large number of unit core holding members 32 arranged in a line are connected to a connecting plate 33.
And a connecting pin 35, which is composed of a connecting pin 34 and a connecting pin 34. Each unit core holding member 32 is provided with a unit core support pin 32a on the front surface thereof.

As shown in FIGS. 3A and 3B, each unit core holding member 32 of the unit core set jig 14 has a unit core support pin 32a on the front thereof and a unit core S.
1 to S12 are supported one by one. Unit cores S1 to S12
Has a structure having a winding winding portion 51 around which a winding is wound and a yoke portion 52 forming a part of an annular yoke portion, and the winding winding portion 51 is indicated by a broken line. The winding is wound via the insulating bobbin 53 shown.

Next, a method of manufacturing a stator for a rotary electric machine using the plate 13 and the unit core setting jig 14 described above will be described in detail with reference to FIG. Plate 1
3 and the unit core setting jig 14 are set on a table of a winding machine (not shown) so that the plate surface of the plate 13 is horizontal, and the unit core setting jig 14 holding a plurality of unit cores is set on the plate 13 Set it in the holding part adjacent to. The table of the winding machine is configured to be displaceable back and forth and left and right in a horizontal plane. In addition, the winding machine is plate 1
Three nozzles 15, 16 and 1 which are driven in the front-back and left-right directions in the horizontal plane along the plane of 3 and are inclined at a predetermined angle.
Equipped with 7.

These three nozzles 15, 16 and 17 are
The three winding conductors 24, 25, 26 are moved in the front-rear direction shown in FIG. 1 in synchronization with the start points 18, 19, 20 shown in FIG.
Withdrawing together with the movement of 17, the unit cores S1 and S2
, S3, each coil winding portion 51 (FIG. 3) is rotated counterclockwise by the required number of turns (turn number), and as shown in FIGS. Form C1, C2 and C3.

Next, the three nozzles 15, 16 and 17 are moved to synchronize the three winding conductors 24, 25 and 26 in the forward and backward directions shown in FIG.
4, 25, 26 are hooked on the corresponding pins P1, P2, P3, and then the three nozzles 15, 16, 17 are moved in the left-right direction shown in FIG. Two
6 is hooked on the pins P4, P5, P6, and then the three nozzles 15, 16, 17 are moved in the front-back direction, so that the windings required for each winding winding portion 51 of the unit cores S4, S5, S6 are wound. Rotate in the clockwise direction for the number of times, and then, as shown in FIG.
The winding portions C4, C5, C6 are formed as shown in FIG.

Next, the three nozzles 15, 16 and 17 are moved to synchronously move the three winding conductors 24, 25 and 26 in the front-rear direction, and these winding conductors 24, 25 and 2 are moved.
6 to the corresponding pins PP4, PP5, PP6,
Next, the three nozzles 15, 16 and 17 are moved to the left and right to move the three winding conductors 24, 25 and 26 to the pin PP7,
Hook PP8, PP9, then three nozzles 15, 1
6 and 17 are moved in the front-rear direction to move the unit cores S7 and S8.
, S9, the number of windings required for each winding winding portion 51,
By rotating in the counterclockwise direction, the winding portions C7, C8, C9 are formed as shown in FIGS.

Next, the three nozzles 15, 16 and 17 are moved to synchronously move the three winding conductors 24, 25 and 26 in the front-rear direction, and the winding conductors 24, 25 and 2 are moved.
6 on the corresponding pins P7, P8, P9, then 3
Move the nozzles 15, 16 and 17 of the book to the left and right,
Connect the three winding conductors 24, 25, 26 to pins P10, P11, P
Then, the three nozzles 15, 16 and 17 are moved in the front-rear direction to move clockwise in the clockwise direction by the number of windings required for each winding winding part 51 of the unit cores S10, S11 and S12. Rotate and turn the winding part C1 as shown in FIGS.
0, C11, C12 are formed.

Then, the three winding conductors 24, 25 and 26 are moved in the front-rear direction in synchronization with each other by the movement of the three nozzles 15, 16 and 17 to move them in the front-rear direction.
6 is the winding end position, that is, the end points 21 and 2.
Move to 2,23.

At this point or before this state, the U-phase lead wire 27 is arranged horizontally on the plate 13 along the pins PP4 and PP7 as shown in FIG. And connect the V-phase lead wire 28 to pins PP5 and PP.
Place the lead wire 29 of the W phase in the pin P
Place horizontally along P6 and PP9. In this state, the winding start end, winding end and middle portion of the U-phase winding conductor 24 are respectively connected to the U-phase lead wire 27 at the positions of the start point 18, the end point 21 and the pin PP4. , 36b, 36c. The formation of these connecting portions 36a, 36b, 36c is
The insulating coating portions of the winding conductor 24 and the U-phase lead wire 27 are partially removed to expose the conductors, and the exposed conductors are electrically connected to each other by soldering or welding.

Similarly, the winding start end, winding end and middle portion of the V phase winding conductor 25 are connected to the V phase lead wire 28 at the positions of the start point 19, end point 22 and pin PP5, respectively. Parts 37a, 37b, 37c
To connect. Further, at the positions of the start point 20, the end point 23, and the pin PP6 on the W-phase lead wire 29, the winding start end, winding end end, and intermediate portion of the W-phase winding conductor 26 are respectively connected to the connecting portions 38a, 38b. , 38
Connect by c.

Furthermore, the winding conductor 2 located on the neutral point connecting points 30 and 31 previously shown on the plate 13
4, 25 and 26 are collectively connected by the connection portions 39 and 40. The connection portions 39, 40 are formed by partially removing the insulating coating portions of the winding conductors 24, 25, 26 to expose the conductors, and soldering or welding the exposed conductors.

Finally, the unit core set jig 14 is removed from the holding portion, and the first unit core S1 and the last unit core S12 of the twelve unit cores S1 to S12 are set as shown in FIG. The yoke portions 52 are combined and interconnected to form an annular yoke portion 54. In this state, the unit core setting jig 14 is removed from the yoke portion 54. Thereafter, although not shown, a tubular frame that constitutes a part of the housing of the rotating electric machine is fitted to the outer periphery of the annular yoke portion 54.

When manufactured in this manner, four star connection units 41a, 41b, 41 as shown in FIG.
Among the c and 41d, two parallel connection units 42a and 42 formed by using two adjacent star connection units (41a, 41b) and (41c, 41d) as a unit.
b can be manufactured by continuous automatic winding without cutting the winding conductors 24, 25 and 26 even once.

In the above example, m (= 4) × n (= 3) unit cores S1 to S12 are used, and the m (= 4) star connection units 41a, 41b, 41c, 41d are adjacent to each other. M / 2 (= 4/2) parallel connection units 42 formed in units of two matching star connection units 42
Although the case of manufacturing a and 42b has been described, the present invention is not limited to this, and 2n (n = 3) unit cores S1 to S6 are used to form two star connection units 41a and 41b. The same can be applied to the case of manufacturing one parallel connection unit 42a formed by using as a unit. A stator for a rotary electric machine provided with a parallel connection in which m is an even number of 4 or more and n is a multiple of 3 can also be manufactured by the same method as described above.

The structure of the 12-pole stator for a rotary electric machine manufactured by the above method will be described with reference to FIGS. 6 and 7.
In this stator for a rotating electric machine, a winding winding portion 51 around which a winding is wound and a yoke portion 52 forming a part of an annular yoke portion 54.
In the twelve unit cores S1 to S12, the winding portion 51 is located inside and the yoke portion 52 is the annular yoke portion 54.
To form a stator core. Winding winding part 51 of twelve unit cores S1 to S12
Winding conductors 24, 25 and 26 are wound around each of the windings to form winding portions C1 to C12. Of the winding portions C1 to C12 wound around the winding winding portions 51 of the twelve unit cores S1 to S12, three adjacent winding portions (C1 to C3, which form a three-phase magnetic pole) (C1 to C3, C4 to C6 ...) As a unit, the windings of the three winding portions are star-connected for each of these units to form four star connection units 41a to 41d.

The two star connection units 41a and 41b, and the neutral points of 41c and 41d are connected to each other to form two parallel connection units 42a and 42b.
windings [C1, C4, C7, C10 (U phase) and C2, C5, C8, which form the three-phase magnetic poles included in a and 42b.
, C11 (V phase) and C3, C6, C9, C12 (W phase)]
Are connected to the corresponding three-phase lead wires 27, 28, and 29, respectively.

Then, three consecutive unit cores S1 to S3
, Three winding conductors 24, 25, 26 are wound to form first three-phase winding portions C1 to C3. These three continuous unit cores S1 to S3 and then the continuous three unit cores S4 to S6 also have three winding conductors 24,
25 and 26 are continuously wound to form second three-phase winding portions C4 to C6. Three crossover wires CL11 to CL13 connecting between the first three-phase winding portions C1 to C3 and the second three-phase winding portions C4 to C6 are three winding conductors 24. , 25, 26 and are electrically connected to each other. As a result, the first and second star connection units 41a and 41b are formed at the same time.
The neutral points of the two star connection units 41a and 41b are connected to each other, and the first parallel connection unit 4 is connected.
2a is constructed.

The second parallel connection unit 42b also has six other unit cores S7 continuous with the six unit cores S1 to S6 used in the first parallel connection unit 42a.
To S12, the first parallel connection unit 42a
3 winding conductors 24, 25, 26 in a manner similar to that of FIG.
Are continuously wound. Specifically, three winding conductors 2 are provided on three continuous unit cores S7 to S9.
4, 25, 26 are wound to form the first three-phase winding portion C7
~ C9 are formed. These three continuous unit cores S7 to S9 are followed by three continuous unit cores S10 to S9.
Also in 12, the three winding conductors 24, 25 and 26 are continuously wound to form the winding portions C10 to C12 for the second three phases. Three crossover wires CL31 to CL33 connecting between the first three-phase winding portions C7 to C9 and the second three-phase winding portions C10 to C12 are three winding conductors 24. , 25, 2
6 and are electrically connected to each other. As a result, the third and fourth star connection units 41c and 41d are formed, and at the same time, the neutral points of the two star connection units 41c and 41d are connected to each other, and the second parallel connection unit 42b is configured. .

First and second parallel connection units 4
2a and 42b are connected by crossovers CL21 to CL23. The winding start ends and winding end ends of the three winding conductors 24, 25, 26 are electrically connected to the corresponding three lead wires 27, 28, 29, and two parallel connection units 42a and Two lead wires 2 corresponding to the three connecting wires CL21 to CL23 connecting between 42b
It is electrically connected to 7, 28 and 29, respectively.

In this example, the winding parts for the first three phases and the second winding part
Three crossovers CL1 connecting between the winding parts for the three phases of
1-CL13 and CL31 and CL33 are only electrically connected to each other, the two star connection units (41a
And 41b; 41c and 41d) first and second parallel connection units 42a and 4 in which neutral points are mutually connected.
2b can be configured. Further, three lead wires 27 to 2 corresponding to the three connecting wires CL21 to CL23 connecting between the two parallel connection units 42a and 42b.
The respective winding parts [C1, C4, C7, C of the star connection units 41a to 41d are simply electrically connected to
10 (U phase) and C2, C5, C8, C11 (V phase) and C3,
C6, C9, C12 (W phase)] can be connected to the corresponding three-phase lead wires 27 to 29, respectively. Therefore, the number of winding conductors to be connected at each connecting portion in the case of forming a parallel connection can be reduced as compared with the conventional case, and the possibility of connection failure at the connecting portion is reduced.

[0046]

According to the present invention, the n crossovers connecting the first n-phase winding portion and the second n-phase winding portion are electrically connected to each other. Only by doing so, one parallel connection unit in which the neutral points of the two star connection units are connected to each other is configured. Therefore, according to the present invention, the number of winding conductors to be connected in the connecting portion in the case of forming a parallel connection is smaller than in the conventional case, and the possibility of connection failure in the connecting portion can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of the configuration of a plate used in the manufacturing method of the present invention.

FIG. 2A is a plan view showing an example of the configuration of a unit core set jig used in the present invention, and FIG. 2B is a front view of the unit core set jig.

FIG. 3A is a plan view showing an example of a state in which a unit core is set in a unit core setting jig used in the present invention, and FIG.
FIG. 4 is a front view of a unit core setting jig in which the unit core is set.

FIG. 4 is a plan view of a state in which parallel connection winding is performed on the plate shown in FIG. 1 in an example of the embodiment of the present invention.

5 (A) and (B) are partially cross-sectional views showing a state in which the unit cores are set in the unit core setting jig shown in FIGS. 3 (A) and (B), and each unit core is wound. It is a top view and a front view.

FIG. 6 is an equivalent circuit diagram in the parallel connection unit of the first example.

FIG. 7 is a plan view showing a state in which a unit core row having windings is made annular in this example.

[Explanation of symbols]

C1-C12 winding part P1 to P12 pins PP4 to PP9 pins S1 to S12 unit core 13 plates 14 unit core set jig 15, 16, 17 nozzles 18, 19, 20 Start point 21,22,23 Endpoint 24, 25, 26 winding conductor 27, 28, 29 Lead wire 30,31 Neutral point connection point 32 unit core holding member 32a unit core support pin 33 Connection plate 34 Connection pin 35 Connection member 36a, 36b, 36c connection part 37a, 37b, 37c Connection part 38a, 38b, 38c connection part 39,40 connection 41a-41d Star connection unit 42a, 42b Parallel connection unit 51 Winding winding part 52 Yoke 53 insulated bobbin 54 Ring Yoke

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kiyoshi Uchibori 1-15-15 Kitaotsuka, Toshima-ku, Tokyo Sanyo Electric Co., Ltd. Goban No. 1 Sanyo Electric Co., Ltd. (56) Reference JP-A-9-191588 (JP, A) JP-A-8-182236 (JP, A) JP-A-4-312335 (JP, A) (58) ) Fields surveyed (Int.Cl. ⁷ , DB name) H02K 3/00-3/28 H02K 15/095

Claims (3)

(57) [Claims] 1. A m × comprising a winding winding portion around which a winding is wound and a yoke portion integrally provided on a base portion of the winding winding portion.
n unit cores (m is an even number of 4 or more, n is a multiple of 3) are combined so that the winding winding portion is located inside and the yoke portion constitutes an annular yoke portion. And a plurality of winding portions configured by winding winding conductors wound around the winding winding portions of the m × n unit cores, the m × n unit cores Among the winding parts wound around the winding winding part, the windings of n winding parts forming an n-phase magnetic pole are star-connected to form m star connection units, which are adjacent to each other. M / 2 parallel connection units are configured by connecting the neutral points of every two of the star connection units to each other, and the n-phase included in the m / 2 parallel connection units Each of the winding parts constituting the magnetic pole of is connected to the corresponding n lead wires for n phases. A stator for a rotating electric machine, wherein n winding conductors are wound around n continuous unit cores to form the first n-phase winding portion, and the continuous n winding cores are formed. The n winding conductors are continuously wound around the n unit cores that are continuous with the unit cores, and the second n-phase winding portion is formed. n crossover portions that connect between the n-phase winding portion and the second n-phase winding portion are formed by the n winding conductors and are electrically connected to each other. The first parallel connection unit is connected to form the first parallel connection unit, and the 2n different unit cores that are continuous with the 2n unit cores used in the first parallel connection unit are connected to the first unit. Next, the n winding conductors are continuously wound in the same manner as the configuration of the parallel connection unit. Said and parallel-connecting unit is configured, the remaining of said parallel-connecting unit in the same manner the n
The winding start ends and the winding end ends of the n winding conductors are electrically connected to the corresponding n-layer lead wires. N for connecting the units for parallel connection
A stator for a rotating electrical machine, wherein each of the connecting wires is electrically connected to the corresponding n lead wires. 2. A m × comprising a winding winding portion around which a winding is wound and a yoke portion integrally provided on a base portion of the winding winding portion.
n unit cores (m is an even number of 4 or more, n is a multiple of 3) are combined so that the winding winding portion is located inside and the yoke portion forms an annular yoke portion. And a plurality of winding portions configured by winding winding conductors covered with an insulating coating on the winding winding portions of the m × n unit cores, respectively. X m star connection units are formed by star-connecting the windings of n winding parts forming an n-phase magnetic pole among the winding parts wound around the winding winding part of n unit cores And the neutral points of the adjacent star connection units are connected to each other to form m / 2 parallel connection units, and the n-phase parallel connection units included in the m / 2 parallel connection units are connected. Each of the winding portions constituting the magnetic pole is connected to n lead wires corresponding to n phases, respectively. A continuous method for manufacturing a stator for a rotating electric machine, wherein the m × n unit cores are arranged as an example so that the winding winding portions face in the same direction, and the continuous n unit cores are arranged. The first to be used for the first parallel connection unit by winding each of n winding conductors
The winding portions for n phases are formed, and then the n winding conductors are respectively drawn out by a length for forming n crossovers, and then the continuous n unit cores are connected. The n winding conductors are continuously wound around each of the n continuous unit cores to form the second n-phase winding portion used in the first parallel connection unit. After pulling out the n winding conductors by the length for forming the n crossovers, the 2n separate unit cores connected to the 2n unit cores used in the first parallel connection unit are separated from each other. The n core winding conductors are continuously connected to the unit core by a procedure similar to the procedure of forming the winding parts for the first and second n phases of the first parallel connection unit. The first and second n-phase components of the next parallel connection unit And forming the winding portions for the first and second n-phases of the remaining parallel connection unit using the n winding conductors. Part of the insulating coating portion of the n crossover wires that connects between the winding portion for the first n phase and the winding portion for the second n phase of each parallel connection unit To remove the conductors to expose the conductors, and to electrically connect the exposed conductors to each other to form each of the parallel connection units. The n wires that are electrically connected to the corresponding n lead wires and that connect between the two parallel connection units.
The connecting wires are partially removed to expose the conductors, the exposed conductors are electrically connected to the corresponding n lead wires, and finally, the m × n unit cores are connected to the connecting wires. A method of manufacturing a stator for a rotary electric machine, characterized in that iron parts are combined so as to form an annular yoke part. 3. A plurality of winding locking portions are arranged adjacent to the row of the unit cores, and the n winding conductors are locked to the corresponding winding locking portions, whereby the n winding winding portions are locked. 3. The method for manufacturing a stator for a rotary electric machine according to claim 2, wherein each of the connecting wires is formed .