CN212695791U

CN212695791U - Single winding structure of motor stator winding

Info

Publication number: CN212695791U
Application number: CN202021961129.6U
Authority: CN
Inventors: 杨云峰; 付开强; 陈俊吉; 吴成保; 林海波
Original assignee: Wenling Jiuzhou Electromechanical Co ltd
Current assignee: Zhejiang Jiuzhou New Energy Technology Co Ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-03-12
Anticipated expiration: 2030-09-09
Also published as: WO2022052526A1

Abstract

The utility model provides a single wire winding structure of motor stator winding belongs to motor technical field. It has solved the not high problem in current winding structure groove fullness rate inadequately. This stator is including being annular stator towards the piece, the equidistant a plurality of stator tooth that is equipped with of circumference of stator towards the piece, the stator slot has between two adjacent stator teeth, stator tooth has a plurality of in situ coil layers through the mode winding of single line outward, stator tooth is outer still to be twined one layer of outer coil layer through the mode of single line, outer coil layer winding is outside interior coil layer, along stator towards the radial of piece, outer coil layer winding number of turns side by side is less than interior coil layer winding number of turns side by side, the setting of staggering of outer coil layer on two adjacent stator teeth. The single winding structure of the motor stator winding is reasonable in winding coil, and the advantage of improving the slot fullness rate is achieved.

Description

Single winding structure of motor stator winding

Technical Field

The utility model belongs to the technical field of the motor, a single wire winding structure of motor stator winding is related to.

Background

With the continuous development of science and technology, the traditional brush direct current motor gradually fades out of the market, and replaces the brush-less direct current motor with higher efficiency and a control system. Although the efficiency of a conventional multi-wire brushless direct current motor is greatly improved compared with a brush motor, the conventional multi-wire brushless direct current motor also has the phenomena of low finished product qualification rate, irregular end part and the like, and the product has poor stability and more copper wire waste when the machine is used for wire embedding.

In view of the above problems, a single-wire motor has been invented, and for example, chinese patent literature discloses a brushless single-wire motor for electric vehicles and electric cars and a winding structure thereof [ application number: 201821790612.5, respectively; authorization notice number: CN203734409U ], which comprises a stator, wherein the stator comprises stator teeth, slots and windings, wherein the number of the stator teeth is a multiple of the number of working phases of the motor, the number of the slots is the same as that of the stator teeth, the windings are arranged on the stator teeth in a single-wire parallel winding manner, the windings are connected with each other, gibs are arranged on the stator, and the windings are connected with each other on the gibs.

The brushless single-wire motor of this kind of structure, along stator support's radial, the width of wire casing is the increase from inside to outside between two adjacent stator teeth, and the number of piles of every stator tooth winding coil outward is the same, and the length that is located outer coil layer is unanimous basically with the length that is located the coil layer of inlayer, and this still has certain clearance between the outermost coil layer that just makes two adjacent stator tooth winding outward, and the wire casing can not better be filled up to the coil, and the groove filling rate also has the space of promotion.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a single wire winding structure of motor stator winding, the technical problem of solution is how reasonable winding coil, improves the full rate of groove.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a single wire winding structure of motor stator winding, the stator is including being annular stator punching, the equidistant a plurality of stator tooth, adjacent two of circumference of stator punching has the stator slot between the stator tooth, the stator tooth has a plurality of in situ coil layers through the mode winding of single line outward, a serial communication port, the stator tooth still twines a layer outer coil layer through the mode of single line outward, outer coil layer winding is outside the interior coil layer, along the radial of stator punching, the number of turns that outer coil layer twined side by side is less than the number of turns that interior coil layer twined side by side, adjacent two the setting of staggering of outer coil layer on the stator tooth.

The setting on outer coil layer has filled the clearance that has between the outermost interior coil layer of two adjacent stator tooth outsourcing, makes stator tooth can twine more copper lines outward, improves the full rate of groove to improve the performance of motor. And because along the radial of stator punching, the number of turns that outer coil layer twined side by side is less than the number of turns that inner coil layer twined side by side, and the setting of staggering of outer coil layer on two adjacent stator teeth prevents the mutual scraping between the copper line, and effectual reduction is because of the interturn phenomenon that the mutual scraping of copper line leads to.

In the single winding structure of the motor stator winding, three stator teeth are taken as a group, and are sequentially recorded as a first stator tooth, a second stator tooth and a third stator tooth along a clockwise direction, outer coil layers wound on the first stator tooth, the second stator tooth and the third stator tooth are sequentially recorded as a first outer coil layer, a second outer coil layer and a third outer coil layer, the first outer coil layer is wound on the inner end of the first stator tooth, the second outer coil layer is wound on the middle position of the second stator tooth, and the third outer coil layer is wound on the outer end of the third stator tooth. This kind of structure, the clearance between two adjacent stator teeth of rational utilization makes the setting of staggering that outer coil layer can be better when arranging more copper lines, prevents the mutual scraping between the copper line, and effectual reduction is because of the interturn phenomenon that the copper line mutual scraping leads to.

In the single winding structure of the motor stator winding, along the radial direction of the stator punching sheet, the sum of the number of parallel winding turns of the first outer coil layer, the second outer coil layer and the third outer coil layer is equal to or slightly less than the number of parallel winding turns of the inner coil layer. This kind of structure, the outer winding coil of adjacent three stator tooth has increased the one deck in other words, arranges more copper lines, improves the full rate in groove to improve the performance of motor, first outer coil layer, the outer coil layer of second and the outer coil layer of third are respectively parallelly wound the number of turns how much can be inconsistent, as long as stagger and total accumulation be close to the number of turns on an in situ coil layer can.

As another situation, in the above single winding structure of the stator winding of the motor, two stator teeth are taken as a group, and are sequentially marked as a fourth stator tooth and a fifth stator tooth along the clockwise direction, outer coil layers wound on the fourth stator tooth and the fifth stator tooth are sequentially marked as a fourth outer coil layer and a fifth outer coil layer, respectively, the fourth outer coil layer is wound in the middle of the fourth stator tooth, and the fifth outer coil layer is wound at the outer end of the fifth stator tooth. The arrangement mode is suitable for the situation that the width of the slot bottom is too small, and the copper wire can be only wound at the middle part and the outer end of the stator tooth without being embedded into the slot bottom; this kind of structure, the clearance between two adjacent stator teeth of rational utilization makes the setting of staggering that outer coil layer can be better when arranging more copper lines, prevents the mutual scraping between the copper line, and effectual reduction is because of the interturn phenomenon that the copper line mutual scraping leads to.

In the single winding structure of the motor stator winding, along the radial direction of the stator punching sheet, the sum of the number of parallel winding turns of the fourth outer coil layer and the fifth outer coil layer is less than one layer of the number of parallel winding turns of the inner coil layer. According to the structure, more copper wires are arranged as far as possible, the groove filling rate is improved, and therefore the performance of the motor is improved.

As a third aspect, in the single winding structure of the stator winding of the motor, two stator teeth are taken as a group, and the stator teeth are sequentially marked as a sixth stator tooth and a seventh stator tooth along the clockwise direction, outer coil layers wound on the sixth stator tooth and the seventh stator tooth are sequentially marked as a sixth outer coil layer and a seventh outer coil layer, respectively, the sixth outer coil layer is wound inside the sixth stator tooth, and the seventh outer coil layer is wound outside the seventh stator tooth. This kind of structure, the clearance between two adjacent stator teeth of rational utilization makes the setting of staggering that outer coil layer can be better when arranging more copper lines, prevents the mutual scraping between the copper line, and effectual reduction is because of the interturn phenomenon that the copper line mutual scraping leads to.

In the single winding structure of the motor stator winding, along the radial direction of the stator punching sheet, the sum of the number of parallel winding turns of the sixth outer coil layer and the seventh outer coil layer is equal to or slightly less than the number of parallel winding turns of the inner coil layer. The structure is equivalent to that the coils wound outside two adjacent stator teeth are added by one layer, more copper wires are arranged, the slot fullness rate is improved, and therefore the performance of the motor is improved.

In the above single winding structure of the motor stator winding, the number of the inner coil layers is 1 to 4. The number of layers of the inner coil layer is reasonably arranged according to the width of the slot.

Compared with the prior art, the utility model provides a pair of single wire winding structure of motor stator winding has following advantage:

1. this winding structure sets up the outer coil layer, fills the clearance between two adjacent stator teeth, makes the stator tooth can twine more copper lines outward, arranges more copper lines, improves the full rate of groove to improve the performance of motor.

2. The outer coil layer that this winding structure set up staggers the setting, and the rational utilization space prevents the mutual scraping between the copper line, and effectual reduction is because of the turn-to-turn phenomenon that the mutual scraping of copper line leads to.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a single-winding structure of a stator winding of the motor.

Fig. 2 is a schematic structural diagram of a second embodiment of the single-winding structure of the stator winding of the motor.

Fig. 3 is a schematic structural diagram of a third embodiment of the single-winding structure of the stator winding of the motor.

Fig. 4 shows the winding manner of the outer coil layer of the single winding structure of the stator winding of the motor with four stator teeth as a group.

In the figure, 1, stator teeth; 11. a first stator tooth; 12. a second stator tooth; 13. a third stator tooth; 14. a fourth stator tooth; 15. a fifth stator tooth; 16. a sixth stator tooth; 17. a seventh stator tooth; 2. a stator slot; 3. an inner coil layer; 4. an outer coil layer; 41. a first outer coil layer; 42. a second outer coil layer; 43. a third outer coil layer; 44. a fourth outer coil layer; 45. a fifth outer coil layer; 46. a sixth outer coil layer; 47. a seventh outer coil layer.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1, the stator is including being annular stator punching, and the circumference equidistant of stator punching is equipped with forty-eight stator teeth 1, and the quantity of stator teeth 1 also can be fifty four or sixty, has stator slot 2 between two adjacent stator teeth 1, and the wire winding structure includes interior coil layer 3 and outer coil layer 4, and interior coil layer 3 and outer coil layer 4 are formed by the copper wire winding.

In this embodiment, stator tooth 1 has two in-layer coil layers 3 through the mode winding of single line outward, stator tooth 1 still twines one layer of outer coil layer 4 through the mode of single line outward, outer coil layer 4 twines outside inner coil layer 3, along the radial of stator punching, outer coil layer 4 is less than inner coil layer 3 and is twined the number of turns side by side, outer coil layer 4 on two adjacent stator teeth 1 staggers the setting, in actual production, the number of turns of inner coil layer 3 can be three-layer or four-layer.

The three stator teeth 1 are used as a group, and are sequentially marked as a first stator tooth 11, a second stator tooth 12 and a third stator tooth 13 along the clockwise direction, the outer coil layers 4 wound on the first stator tooth 11, the second stator tooth 12 and the third stator tooth 13 are sequentially marked as a first outer coil layer 41, a second outer coil layer 42 and a third outer coil layer 43 respectively, the first outer coil layer 41 is wound at the inner end of the first stator tooth 11, the second outer coil layer 42 is wound at the middle of the second stator tooth 12, and the third outer coil layer 43 is wound at the outer end of the third stator tooth 13.

In this embodiment, in the radial direction of the stator punching sheet, the total number of the parallel winding turns of the first outer coil layer 41, the second outer coil layer 42 and the third outer coil layer 43 is equal to the number of the parallel winding turns of the coil layer 3 in one layer, the parallel winding turns of the first outer coil layer 41, the second outer coil layer 42 and the third outer coil layer 43 are 1/3 of the parallel winding turns of the coil layer 3 in one layer, in practical production, the total number of the parallel winding turns of the first outer coil layer 41, the second outer coil layer 42 and the third outer coil layer 43 is less than the parallel winding turns of the coil layer 3 in one layer, the parallel winding turns of the first outer coil layer 41, the second outer coil layer 42 and the third outer coil layer 43 may be 1/4 of the parallel winding turns of the coil layer 3 in one layer, and the parallel winding turns of the first outer coil layer 41, the second outer coil layer 42 and the third outer coil layer 43 may be 1/5, the parallel winding turns of the coil layer 3, respectively, 1/4, and 1/3.

As shown in fig. 4, taking forty-eight slots as an example, the stator teeth are sequentially numbered 1, 2, 3 … … 46, 47 and 48 in the clockwise direction, four stator teeth are taken as a group, two inner coil layers 3 are sequentially wound outside the stator teeth 1 to 4 in the clockwise direction, and then the outer coil layers 4 are wound outside the stator teeth in the sequence of the

stator teeth

4, 2, 1 and 3. And then, winding two layers of inner coils outside the stator teeth 5-8 in sequence along the clockwise direction, then winding an outer coil layer 4 outside the stator teeth according to the sequence of the stator teeth 8, 6, 5 and 7, and winding the inner coils in sequence according to the sequence until the winding is finished.

Example two

As shown in fig. 2, the structure and principle of the present embodiment are substantially the same as those of the first embodiment, except that in the present embodiment, two stator teeth 1 are taken as a group, and are sequentially taken as a fourth stator tooth 14 and a fifth stator tooth 15 in the clockwise direction, the outer coil layers 4 wound by the fourth stator tooth 14 and the fifth stator tooth 15 are sequentially taken as a fourth outer coil layer 44 and a fifth outer coil layer 45 respectively, the fourth outer coil layer 44 is wound at the middle of the fourth stator tooth 14, the fifth outer coil layer 45 is wound at the outer end of the fifth stator tooth 15, and in the radial direction of the stator lamination, the sum of the number of parallel windings of the fourth outer coil layer 44 and the fifth outer coil layer 45 is less than the number of parallel windings of the coil layer 3 in one layer, and is more than half of the number of parallel windings of the coil layer 3 in one layer. The number of parallel windings of the fourth outer coil layer 44 and the fifth outer coil layer 45 is 1/3 equal to the number of parallel windings of the inner coil layer 3, and in practical production, the number of parallel windings of the fourth outer coil layer 44 and the fifth outer coil layer 45 may be 1/3 and 1/2, respectively, or 1/4 and 1/2, respectively, of the number of parallel windings of the inner coil layer 3.

EXAMPLE III

As shown in fig. 3, the structure and principle of the present embodiment are substantially the same as those of the first embodiment, except that in the present embodiment, the two stator teeth 1 are taken as a group and are sequentially taken as the sixth stator tooth 16 and the seventh stator tooth 17 in the clockwise direction, the outer coil layers 4 wound by the sixth stator tooth 16 and the seventh stator tooth 17 are sequentially taken as the sixth outer coil layer 46 and the seventh outer coil layer 47 respectively, the sixth outer coil layer 46 is wound inside the sixth stator tooth 16, the seventh outer coil layer 47 is wound outside the seventh stator tooth 17, and in the radial direction of the stator lamination, the sum of the number of parallel windings of the sixth outer coil layer 46 and the seventh outer coil layer 47 is equal to the number of parallel windings of the coil layer 3 in one layer, and the number of parallel windings of the sixth outer coil layer 46 and the seventh outer coil layer 47 are 1/2 equal to the number of parallel windings of the coil layer 3 in one layer, the sum of the number of parallel windings of the sixth outer coil layer 46 and the seventh outer coil layer 47 is slightly less than the number of parallel windings of the inner coil layer 3, the number of parallel windings of the sixth outer coil layer 46 and the seventh outer coil layer 47 is 2/5 of the number of parallel windings of the inner coil layer 3, or the number of parallel windings of the sixth outer coil layer 46 and the seventh outer coil layer 47 is 2/5 and 1/2 of the number of parallel windings of the inner coil layer 3.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms such as the stator tooth 1, the first stator tooth 11, the second stator tooth 12, the third stator tooth 13, the fourth stator tooth 14, the fifth stator tooth 15, the sixth stator tooth 16, the seventh stator tooth 17, the stator slot 2, the inner coil layer 3, the outer coil layer 4, the first outer coil layer 41, the second outer coil layer 42, the third outer coil layer 43, the fourth outer coil layer 44, the fifth outer coil layer 45, the sixth outer coil layer 46, the seventh outer coil layer 47, etc., are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a single wire winding structure of motor stator winding, the stator is including being annular stator punching, the circumference equidistant of stator punching is equipped with a plurality of stator tooth (1), adjacent two stator slot (2) have between stator tooth (1), stator tooth (1) has a plurality of in situ coil layer (3) through the mode winding of single line outward, its characterized in that, stator tooth (1) still twines through the mode of single line outward has an outer coil layer (4), outer coil layer (4) twine outside inner coil layer (3), along the radial of stator punching, the number of turns that outer coil layer (4) twined side by side is less than inner coil layer (3) and twines side by side the number of turns, adjacent two the setting is staggered in outer coil layer (4) on stator tooth (1).

2. The single winding structure of the stator winding of the motor according to claim 1, wherein three stator teeth (1) are taken as a group and sequentially marked as a first stator tooth (11), a second stator tooth (12) and a third stator tooth (13) along a clockwise direction, the outer coil layers (4) wound on the first stator tooth (11), the second stator tooth (12) and the third stator tooth (13) are sequentially marked as a first outer coil layer (41), a second outer coil layer (42) and a third outer coil layer (43), respectively, the first outer coil layer (41) is wound at the inner end of the first stator tooth (11), the second outer coil layer (42) is wound at the middle position of the second stator tooth (12), and the third outer coil layer (43) is wound at the outer end of the third stator tooth (13).

3. A single winding structure of a stator winding of an electrical machine according to claim 2, characterized in that, in the radial direction of the stator lamination, the sum of the number of parallel winding turns of the first outer coil layer (41), the second outer coil layer (42) and the third outer coil layer (43) is equal to or slightly less than the number of parallel winding turns of the inner coil layer (3).

4. The single winding structure of the stator winding of the motor according to claim 1, wherein two stator teeth (1) are taken as a group and are sequentially taken as a fourth stator tooth (14) and a fifth stator tooth (15) along the clockwise direction, the outer coil layers (4) wound on the fourth stator tooth (14) and the fifth stator tooth (15) are sequentially taken as a fourth outer coil layer (44) and a fifth outer coil layer (45), the fourth outer coil layer (44) is wound in the middle of the fourth stator tooth (14), and the fifth outer coil layer (45) is wound at the outer end of the fifth stator tooth (15).

5. Single winding arrangement for a stator winding of an electrical machine according to claim 4, characterised in that the sum of the number of parallel windings of the fourth (44) and fifth (45) outer coil layers is less than the number of parallel windings of the inner coil layer (3) in one layer in the radial direction of the stator lamination.

6. The single winding structure of the stator winding of the motor according to claim 1, wherein two stator teeth (1) are taken as a group and are sequentially taken as a sixth stator tooth (16) and a seventh stator tooth (17) along the clockwise direction, the outer coil layers (4) wound on the sixth stator tooth (16) and the seventh stator tooth (17) are sequentially taken as a sixth outer coil layer (46) and a seventh outer coil layer (47), the sixth outer coil layer (46) is wound inside the sixth stator tooth (16), and the seventh outer coil layer (47) is wound outside the seventh stator tooth (17).

7. Single winding arrangement for a stator winding of an electrical machine according to claim 6, characterised in that the sum of the number of parallel windings of the sixth (46) and seventh (47) outer coil layers is equal to or slightly less than the number of parallel windings of the inner coil layer (3) in the radial direction of the stator lamination.

8. Single winding arrangement for a stator winding of an electrical machine according to any of claims 1-7, characterised in that the number of layers of the inner coil layer (3) is 1-4.