CN110829659A - Hairpin winding type motor stator and motor - Google Patents
Hairpin winding type motor stator and motor Download PDFInfo
- Publication number
- CN110829659A CN110829659A CN201910995143.3A CN201910995143A CN110829659A CN 110829659 A CN110829659 A CN 110829659A CN 201910995143 A CN201910995143 A CN 201910995143A CN 110829659 A CN110829659 A CN 110829659A
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- hairpin
- stator
- winding
- windings
- motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
Abstract
The invention relates to the technical field of automobiles, and discloses a hairpin winding type motor stator and a motor. The hairpin winding type motor stator comprises an iron core and a stator winding, wherein a plurality of stator slots are formed in the iron core, and the iron core comprises an inserting side and a welding side; the stator winding is arranged in the stator slot and comprises a plurality of groups of hairpin windings, each group of hairpin winding comprises a plurality of hairpins with the same shape, two ends of each hairpin respectively penetrate through the stator slot from the insertion side and penetrate out from the welding side, and a plurality of hairpin layers are formed by the plurality of groups of hairpin windings; the end parts of the two ends of the hair clip arranged on the welding side are bent towards the two sides by the same number of grooves, so that the end parts of the hair clips of the adjacent hair clip layers are in one-to-one correspondence, and the end parts of the hair clips are connected with the end parts of the adjacent hair clips arranged on different layers and in the same column according to rules. The hairpin winding type motor stator provided by the invention is convenient for automatic connection and subsequent processing, the size of the motor is reduced, the structure of the motor is simplified, and the quality and consistency of products are good.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a hairpin winding type motor stator and a motor.
Background
With the rapid development of new energy automobile technology, the performance requirement on the motor is higher and higher, the increase of the performance inevitably leads to the complexity of the motor structure, and the contradiction between the performance of the motor and the complex structure is increasingly prominent.
The stator winding of the existing motor generally adopts round wires to form coils, and the cross section of the stator winding can be divided into round coils and square coils. Compared with a circular coil, the square coil can effectively improve the slot filling rate of the motor, reduce the copper consumption of the motor, improve the efficiency of the motor, and simultaneously reduce the height of the end part of a stator winding of the motor, thereby saving the volume of the motor. In the prior art, the motor is composed of a plurality of hairpins, a plurality of forming molds are needed during processing, and the plurality of hairpins are inserted from the insertion side without utilizing automatic processing. Furthermore, the additional jumpers require more space for the stator of the machine.
Disclosure of Invention
The invention aims to provide a hairpin winding type motor stator and a motor, which are convenient for connection and subsequent production between hairpins and have good product quality and consistency.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hairpin wound motor stator comprising:
the stator comprises an iron core, a stator core and a stator core, wherein the iron core is provided with a plurality of stator slots and comprises an inserting side and a welding side;
the stator winding is arranged in the stator slot and comprises a plurality of groups of hairpin windings, each group of hairpin winding comprises a plurality of hairpins with the same shape, two ends of each hairpin penetrate through the stator slot from the inserting side and penetrate out from the welding side, and a plurality of groups of hairpin windings form a plurality of hairpin layers;
the end parts of the two ends of the hair clips, which are arranged on the welding side, are bent towards the two sides by the same number of grooves, so that the end parts of the hair clips of the adjacent hair clip layers are in one-to-one correspondence, and the end parts of the hair clips are connected with the end parts of the adjacent hair clips, which are arranged on different layers and in the same row, according to rules.
Preferably, the hairpin windings include a plurality of phase windings, and the phase windings of the same phase among the plurality of hairpin windings are connected by a connection line group.
Preferably, the connection line group includes 5 slot pitch long first connection lines and 7 slot pitch long second connection lines.
Preferably, the stator winding further comprises a neutral connection line for connecting between the phase windings.
Preferably, the hairpin winding includes three phases of the phase winding, each phase of the phase winding is connected with a phase outgoing line, and the phase outgoing lines are connected with phase terminals.
Preferably, the ends of adjacent haircards which are arranged in different layers and in the same column are connected by welding.
Preferably, the hairpin comprises two plug pins and a U-shaped turn part arranged between the two plug pins.
Preferably, the distance between two plug pins is set to be 6 groove distances.
Preferably, the two plug pins are respectively bent towards two sides by 3 groove distances.
A motor comprises the hairpin winding type motor stator.
The invention has the beneficial effects that: the stator windings on the inserting side and the welding side of the hairpin winding type motor stator are arranged in order, the connecting ends of the hairpins are arranged on the welding side, automatic connection and subsequent processing are facilitated, a mode of connecting the hairpins through conducting wires is replaced, the size of the motor is reduced, the structure of the motor is simplified, and the quality and the consistency of products are good; the hairpins are the same in shape, the number of processing and forming dies is reduced, and the processing cost is reduced.
Drawings
Fig. 1 is a schematic view of an overall structure of a hairpin winding type motor stator according to an embodiment of the present invention;
fig. 2 is an exploded view of a hairpin-wound motor stator provided by an embodiment of the invention;
fig. 3 is a schematic structural diagram of an iron core provided in an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a hairpin provided by an embodiment of the invention;
FIG. 5 is a schematic diagram of a first connection of the ends of the hairpin windings provided by an embodiment of the invention;
fig. 6 is a second schematic connection diagram of the ends of the hairpin windings provided by an embodiment of the invention.
In the figure:
1. an iron core; 11. a stator slot; 12. an insertion side; 13. welding the side;
2. a stator winding; 21. a hairpin winding; 22. card issuing; 221. a pin; 222. a U-shaped turning part; 23. a first card layer; 24. a second hairpin layer; 25. a third hairpin layer; 26. a fourth hairpin layer;
3. connecting a wire group; 31. a first connecting line; 32. a second connecting line;
4. a neutral point connecting line;
5. a phase lead-out wire;
6. and a phase terminal.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 to 6, the present embodiment provides a hairpin winding type motor stator including a core 1 and a stator winding 2. The iron core 1 is provided with a plurality of stator slots 11, and the iron core 1 comprises an inserting side 12 and a welding side 13. The stator winding 2 is arranged in the stator slot 11, the stator winding 2 comprises a plurality of groups of hairpin windings 21, each group of hairpin windings 21 comprises a plurality of hairpins 22 with the same shape, two ends of each hairpin 22 respectively penetrate through the stator slot 11 from the insertion side 12 and penetrate out from the welding side 13, and a plurality of hairpin layers are formed by the plurality of groups of hairpin windings 21; both end portions of the hairpin 22 disposed on the welding side 13 are bent to both sides by the same number of grooves, so that the end portions of the hairpin 22 of the adjacent hairpin layers correspond one to one, and the end portions of the hairpin 22 are connected with the end portions of the adjacent hairpin 22 disposed on the same column and disposed on different layers in a regular manner.
The stator windings 2 on the inserting side 12 and the welding side 13 of the hairpin winding type motor stator provided by the embodiment are regularly arranged, and the connecting ends of the hairpins 22 are on the welding side 13, so that the automatic connection and the subsequent processing are facilitated, a mode of connecting the hairpins 22 through conducting wires is replaced, the size of the motor is reduced, the structure of the motor is simplified, and the quality and the consistency of products are good; the hairpins are the same in shape, the number of processing and forming dies is reduced, and the processing cost is reduced. In the present embodiment, the hairpin 22 has a square cross-sectional shape, which improves the performance of the motor and reduces the size of the motor.
In the present embodiment, as shown in fig. 3, a plurality of axially penetrating stator slots 11 are provided at intervals in the circumferential direction of the core 1 on the radially inner surface of the core 1, and the pitch between two adjacent stator slots 11 is equal. In the present embodiment, the iron core 1 has 48 rectangular stator slots 11 opened at equal intervals in the circumferential direction, and the number of pole pairs is 4.
In the present embodiment, with reference to fig. 2, 4 and 5, the stator winding 2 includes two sets of hairpin windings 21, each set of hairpin windings 21 including a plurality of phase windings, and each set of hairpin windings 21 includes three sets of phase windings, which are defined as a U-phase, a V-phase and a W-phase, respectively. Phase windings of the same phase among the plurality of hairpin windings 21 are connected by a connection line group 3. In this embodiment, the connection line set 3 includes the first connection line 31 and the second connection line 32, and the cross section of the first connection line 31 and the cross section of the second connection line 32 are both square, so as to improve the performance of the motor and reduce the volume of the motor. The length of the first connection line 31 is equal to the length of 5 slot pitches, and the length of the second connection line 32 is equal to the length of 7 slot pitches, so that the phase windings in the same phase can be connected conveniently, and no redundant connection line is generated to occupy space.
Each phase winding of the three-phase winding is connected with a phase outgoing line 5, each phase outgoing line 5 is connected with a phase terminal 6, and the phase terminals 6 are used for being connected with an external three-phase power supply. In the embodiment, the section of the phase outgoing line 5 is square, so that the performance of the motor is further improved, and the volume of the motor is reduced.
The stator winding 2 further comprises a neutral connection line 4 for connecting the phase windings, in this embodiment the ends of the hairpin 22 in the stator slot 11 of 19, 20, 27, 28, 35, 36 are connected by the neutral connection line 4. Since the connection of the neutral point connection line 4 is prior art, it will not be described in detail here. In the embodiment, the section of the neutral point connecting line 4 is square, so that the performance of the motor is further improved, and the volume of the motor is reduced.
In this embodiment, two sets of hairpin windings 21 are inserted into stator slot 11 to form four hairpin layers, where the first hairpin layer 23 and the second hairpin layer 24 arranged from the axis of core 1 to the side wall of core 1 are the first hairpin winding, and the third hairpin layer 25 and the fourth hairpin layer 26 are the second hairpin winding. As shown in fig. 6, the hair clip 22 includes two plug pins 221 and a U-shaped turning portion 222 disposed between the two plug pins 221, in order to facilitate the regular welding of the ends of the adjacent hair clips 22, the two plug pins 221 are respectively bent to both sides by the same slot distance, so that the ends of the two hair clips 22 disposed on different layers and required to be connected are adjacent and disposed on the same row, which not only is arranged neatly, improves the aesthetic property of the motor electronics, but also facilitates the connection of the ends of the two hair clips 22. In the embodiment, the two hair clips 22 are connected in a welding mode, the plurality of hair clips 22 are arranged to form the hair clip winding 21, the square hair clips 22 are convenient to wind, the welding method is simple, the mode that the hair clips 22 are connected through conducting wires in the prior art is replaced, the structure is simplified, and the size of the motor is reduced.
In this embodiment, the distance between the two pins 221 is set to be 6 slot pitches, and the two pins 221 are respectively bent toward two sides by 3 slot pitches. In order to realize the winding scheme of the winding structure with the parallel circuit number of 2 and the slot pitch of 6, after the two groups of hairpin windings 21 are inserted into the iron core 1, the tail ends 21 of all the hairpin windings are connected according to the graph 4, and the connection slot pitch of the four hairpin layers is 6. Therefore, after the ends of the pins 221 of the first and second hairpin coils 22 are bent in opposite directions by 3 slot pitches, the two groups of hairpin coils 21 are connected in the form shown in fig. 5, and the ends of the hairpin coils 22 can be directly welded together in pairs according to the connection in fig. 5. The mode is convenient for the automatic processing of the motor stator, and the occupied space of the motor stator is saved without a jumper wire.
The embodiment also provides a motor which comprises the hairpin winding type motor stator, the hairpin winding type motor stator is convenient for automatic processing, the performance of the motor is improved, the structure of the motor is simplified, and the quality and the consistency of the motor are good.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A hairpin winding motor stator, comprising:
the stator comprises an iron core (1), wherein a plurality of stator slots (11) are formed in the iron core (1), and the iron core (1) comprises an inserting side (12) and a welding side (13);
the stator winding (2) is arranged in the stator slot (11), the stator winding (2) comprises a plurality of groups of hairpin windings (21), each group of hairpin windings (21) comprises a plurality of hairpins (22) with the same shape, two ends of each hairpin (22) penetrate through the stator slot (11) from the inserting side (12) and penetrate out from the welding side (13), and a plurality of hairpin layers are formed by the plurality of groups of hairpin windings (21);
the end parts of the two ends of the hairpins (22) arranged on the welding side (13) are bent towards the two sides by the same number of grooves, so that the end parts of the hairpins (22) of the adjacent hairpins layers are in one-to-one correspondence, and the end parts of the hairpins (22) are connected with the end parts of the adjacent hairpins (22) which are arranged on different layers and are arranged in the same row according to rules.
2. The hairpin wound motor stator according to claim 1, characterized in that the hairpin winding (21) includes a plurality of phase windings, and the phase windings of the same phase between the plurality of hairpin windings (21) are connected by a connection line group (3).
3. The hairpin wound motor stator according to claim 2, characterized in that the connection wire group (3) includes a first connection wire (31) of 5 slot pitch length and a second connection wire (32) of 7 slot pitch length.
4. A hairpin wound motor stator according to claim 2, characterized in that the stator winding (2) further comprises a neutral connection line (4) for connecting between the phase windings.
5. The hairpin wound motor stator according to claim 2, wherein the hairpin winding (21) includes three-phase windings, a phase lead line (5) is connected to each phase winding, and a phase terminal (6) is connected to the phase lead line (5).
6. The hairpin wound motor stator according to claim 1, wherein ends of adjacent hairpins (22) disposed in different layers and in the same column are connected by welding.
7. The hairpin wound motor stator of claim 1, wherein the hairpin (22) comprises two plug pins (221) and a U-turn (222) interposed between the two plug pins (221).
8. The hairpin wound motor stator according to claim 7, wherein a pitch between two of the plug pins (221) is set to 6 slot pitches.
9. The hairpin wound motor stator according to claim 7, wherein two of the plug pins (221) are bent to both sides by 3 slot pitches, respectively.
10. An electrical machine comprising a hairpin wound machine stator according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910995143.3A CN110829659A (en) | 2019-10-18 | 2019-10-18 | Hairpin winding type motor stator and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910995143.3A CN110829659A (en) | 2019-10-18 | 2019-10-18 | Hairpin winding type motor stator and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110829659A true CN110829659A (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910995143.3A Pending CN110829659A (en) | 2019-10-18 | 2019-10-18 | Hairpin winding type motor stator and motor |
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| Country | Link |
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| CN (1) | CN110829659A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865349A (en) * | 2021-01-26 | 2021-05-28 | 哈尔滨理工大学 | Hairpin winding motor stator and assembly method thereof |
| DE102020215853A1 (en) | 2020-12-14 | 2022-06-15 | Volkswagen Aktiengesellschaft | Connecting element, electric motor system and assembly method |
| CN114785006A (en) * | 2022-05-12 | 2022-07-22 | 哈尔滨理工大学 | Novel unequal-area flat wire winding permanent magnet motor |
| TWI795786B (en) * | 2021-04-23 | 2023-03-11 | 台達電子工業股份有限公司 | Hairpin stator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102545418A (en) * | 2010-12-28 | 2012-07-04 | 株式会社电装 | Stator for electric rotating machine and method of manufacturing the same |
| CN103733481A (en) * | 2011-09-22 | 2014-04-16 | 日立汽车系统株式会社 | Rotary electrical machine and method for producing rotary electrical machine |
| CN107733116A (en) * | 2016-08-10 | 2018-02-23 | 富士电机株式会社 | Stator and the electric rotating machine for possessing the stator |
| CN109546779A (en) * | 2019-01-17 | 2019-03-29 | 天津市松正电动汽车技术股份有限公司 | A kind of machine winding and motor stator |
-
2019
- 2019-10-18 CN CN201910995143.3A patent/CN110829659A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545418A (en) * | 2010-12-28 | 2012-07-04 | 株式会社电装 | Stator for electric rotating machine and method of manufacturing the same |
| CN103733481A (en) * | 2011-09-22 | 2014-04-16 | 日立汽车系统株式会社 | Rotary electrical machine and method for producing rotary electrical machine |
| CN107733116A (en) * | 2016-08-10 | 2018-02-23 | 富士电机株式会社 | Stator and the electric rotating machine for possessing the stator |
| CN109546779A (en) * | 2019-01-17 | 2019-03-29 | 天津市松正电动汽车技术股份有限公司 | A kind of machine winding and motor stator |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020215853A1 (en) | 2020-12-14 | 2022-06-15 | Volkswagen Aktiengesellschaft | Connecting element, electric motor system and assembly method |
| CN112865349A (en) * | 2021-01-26 | 2021-05-28 | 哈尔滨理工大学 | Hairpin winding motor stator and assembly method thereof |
| CN112865349B (en) * | 2021-01-26 | 2024-04-16 | 哈尔滨理工大学 | Hairpin winding motor stator and assembly method thereof |
| TWI795786B (en) * | 2021-04-23 | 2023-03-11 | 台達電子工業股份有限公司 | Hairpin stator |
| CN114785006A (en) * | 2022-05-12 | 2022-07-22 | 哈尔滨理工大学 | Novel unequal-area flat wire winding permanent magnet motor |
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Application publication date: 20200221 |
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