WO2024082444A1 - Moteur de traction - Google Patents

Moteur de traction Download PDF

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Publication number
WO2024082444A1
WO2024082444A1 PCT/CN2022/143024 CN2022143024W WO2024082444A1 WO 2024082444 A1 WO2024082444 A1 WO 2024082444A1 CN 2022143024 W CN2022143024 W CN 2022143024W WO 2024082444 A1 WO2024082444 A1 WO 2024082444A1
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WO
WIPO (PCT)
Prior art keywords
lead
lead head
head
ring
coil nose
Prior art date
Application number
PCT/CN2022/143024
Other languages
English (en)
Chinese (zh)
Inventor
乔长帅
崔斯柳
王成
侯世旭
钟博
闫涛涛
鲍泉
唐子谋
唐赢武
卞苗苗
刘雄建
Original Assignee
中车株洲电机有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中车株洲电机有限公司 filed Critical 中车株洲电机有限公司
Publication of WO2024082444A1 publication Critical patent/WO2024082444A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes

Definitions

  • the present application relates to the field of motors, and in particular to a traction motor.
  • the purpose of the present application is to provide a traction motor which can improve the parallel structure of the stator lead wires and enhance the structural quality and assembly characteristics of the aforementioned parallel structure.
  • the present application provides a traction motor, including a stator lead and a conductive ring;
  • the stator lead has a coil nose, a first lead and a second lead;
  • the coil nose protrudes from the edge to the center, the first lead head of the first lead is passed through the center of the coil nose and led outward, and the second lead head of the second lead is passed through the edge of the coil nose and led outward;
  • the first lead head outside the coil nose extends straight, and the second lead head outside the coil nose is bent toward the first lead head and close together, and the multiple ring bodies of the conductive ring are arranged on the surrounding sides of the first lead head and the second lead head that are close together.
  • all the ring bodies of the same conductive ring include a U ring, a V ring, a W ring and a neutral ring; all the ring bodies of the same conductive ring are grouped in pairs and are arranged on two opposite sides of the first lead head and the second lead head that are placed side by side.
  • the first lead head is offset relative to the central axis of the coil nose in a direction away from the second lead head; two ring bodies of the same conductive ring are adjacent to the first lead head and arranged axially along the coil nose, and the other two ring bodies are adjacent to the second lead head and arranged radially along the coil nose.
  • any stator lead further includes a binding portion for integrally binding the first lead head, the second lead head, and the conductive ring.
  • a junction box is also included;
  • the stator lead includes a first lead segment and a second lead segment; the coil nose, the first lead head and the second lead head are all arranged on the first lead segment, and the second lead segment includes a copper busbar connected to the junction box.
  • the copper busbar is provided with at least two mounting holes and a first fastener penetrating the mounting holes and tightened to the junction box.
  • the junction box is specifically a non-magnetic steel junction box having an L-shaped cavity; the copper busbar is disposed at a corner of the L-shaped cavity and is bent along the corner.
  • the junction box also includes a cable connected to the copper busbar;
  • the junction box includes clamps distributed in pairs, pads distributed in pairs and arranged between a pair of clamps, a junction box bracket arranged between the pair of pads, and a second fastener for locking the pair of clamps; any clamp is provided with an open groove for the cable to be laterally embedded, and the openings of the open grooves of a pair of clamps face each other and are both toward the pad.
  • the open groove is specifically a U-shaped groove;
  • the second fastener is a countersunk threaded member provided between any one clamping plate and the backing plate, and the countersunk threaded members provided on the two clamping plates are staggered.
  • it also includes a wiring terminal arranged between the copper busbar and the cable; the wiring terminal is sleeved with the cable and connected to the copper busbar; the wiring terminal has a step surface for clamping with the junction box; and multiple wiring terminals arranged on multiple cables are distributed opposite to each other in pairs.
  • the traction motor provided in the present application includes a stator lead and a conductive ring;
  • the stator lead has a coil nose, a first lead and a second lead;
  • the coil nose protrudes from the edge to the center, the first lead head of the first lead is passed through the center of the coil nose and led outward, and the second lead head of the second lead is passed through the edge of the coil nose and led outward;
  • the first lead head outside the coil nose extends straight, and the second lead head outside the coil nose is bent toward the first lead head and close together, and the multiple ring bodies of the conductive ring are arranged on the surrounding sides of the first lead head and the second lead head that are close together.
  • the traction motor provided by the present application allows the first lead head to be led out from the center of the coil nose and the second lead head to be led out from the edge of the coil nose.
  • the second lead head is bent toward the first lead head while the first lead head is not bent, which can reduce the bending degree of the first lead head and the second lead head and reduce the risk of lead insulation damage.
  • the aforementioned parallel head structure of the first lead and the second lead can leave space for the installation of the conductive ring around the middle of the coil nose, so that the entire ring body of the conductive ring neatly and orderly surrounds the first lead head and the second lead head, making full use of the space where the coil nose is located, improving the structural compactness and stability of multiple components, and is suitable for motors with compact structures.
  • FIG1 is a schematic diagram of the partial structure of a traction motor provided by an embodiment of the present application at a first lead head, a second lead head and a conductive ring;
  • FIG2 is a schematic diagram of the partial structure of the traction motor at the copper busbar and the junction box provided in an embodiment of the present application;
  • FIG3 is a schematic diagram of a partial structure of a traction motor at a cable and a junction box provided in an embodiment of the present application;
  • FIG4 is a schematic diagram of the assembly of the clamping plate, the backing plate, the second fastener and the cable provided in the embodiment of the present application;
  • FIG5 is a front view of FIG4
  • FIG. 6 is a schematic diagram of the assembly of the cable and the terminal block provided in an embodiment of the present application.
  • Figure 1 is a schematic diagram of the local structure of the traction motor provided in an embodiment of the present application at the first lead head, the second lead head and the conductive ring
  • Figure 2 is a schematic diagram of the local structure of the traction motor provided in an embodiment of the present application at the copper bus and the junction box
  • Figure 3 is a schematic diagram of the local structure of the traction motor provided in an embodiment of the present application at the cable and the junction box
  • Figure 4 is an assembly schematic diagram of the splint, pad, second fastener and cable provided in an embodiment of the present application
  • Figure 5 is a front view of Figure 4
  • Figure 6 is an assembly schematic diagram of the cable and terminal provided in an embodiment of the present application.
  • the present application provides a traction motor, including a stator lead and a conductive ring 1; in the traction motor, the stator lead includes a coil nose 21, a first lead 22 and a second lead 23.
  • the coil nose 21 protrudes from the edge to the center
  • the first lead 22 has a first lead head 221
  • the first lead head 221 is passed through the center of the coil nose 21 and led outward
  • the second lead 23 has a second lead head 231, the second lead head 231 is passed through the edge of the coil nose 21 and led outward.
  • the first lead head 221 and the second lead head 231 are both led out from the inside of the coil nose 21 to the outside of the coil nose 21. It can be seen that part of the first lead head 221 is located inside the coil nose 21, part of the first lead head 221 is located outside the coil nose 21, part of the second lead head 231 is located inside the coil nose 21, and part of the second lead head 231 is located outside the coil nose 21. Among them, the first lead head 221 located outside the coil nose 21 extends straight, and the second lead head 231 located outside the coil nose 21 is bent toward the first lead head 221 and close together.
  • the conductive ring 1 has a plurality of ring bodies, and all the ring bodies of the conductive ring 1 are arranged on the surrounding sides of the first lead head 221 and the second lead head 231 that are close together.
  • the traction motor optimizes the relative position relationship among the first lead head 221, the second lead head 231 and the coil nose 21, so that the first lead head 221 and the second lead head 231 are both close to and merged toward the middle of the coil nose 21.
  • the bending degree of the first lead head 221 and the second lead head 231 can be reduced, specifically, only the second lead head 231 is bent and close to the first lead head 221 without bending the first lead head 221.
  • the traction motor provided in the present application reduces the risk of lead insulation damage by reducing the degree of bending of the first and second lead heads, and reasonably arranges the first and second lead heads and the conductive ring 1 to fully utilize the space where the coil nose 21 is located, thereby improving the structural compactness and stability of multiple components, and is suitable for a compact motor.
  • the entire ring body of the conductive ring 1 may include a U ring 11, a V ring 12, a W ring 13 and a neutral ring 14; wherein the U ring 11, the V ring 12 and the W ring 13 correspond to the three phases of the motor respectively.
  • the U ring 11, the V ring 12, the W ring 13 and the neutral ring 14 of the conductive ring 1 are grouped in pairs and arranged on two opposite sides of the first lead head 221 and the second lead head 231 that are placed side by side.
  • the U ring 11 and the V ring 12 of the conductive ring 1 are in the same group, and the W ring 13 and the neutral ring 14 of the conductive ring 1 are in the same group.
  • the U ring 11 and the V ring 12 are on the same side of the first and second lead heads that are placed side by side
  • the W ring 13 and the neutral ring 14 are on the same side of the first and second lead heads that are placed side by side
  • the U ring 11 and the W ring 13 are on the opposite sides of the first and second lead heads that are placed side by side, respectively.
  • part of the first lead head 221 and part of the second lead head 231 extend out of the coil nose 21 and are close to the middle part of the coil nose 21, and the middle part of the coil nose 21 is raised relative to the edge of the coil nose 21. Therefore, a larger space is left at the edge of the coil nose 21, which can reasonably and effectively position and install the U-ring 11, V-ring 12, W-ring 13 and neutral ring 14.
  • the first lead head 221 is led out from the middle of the coil nose 21 but slightly deviates from the central axis of the coil nose 21.
  • the first lead head 221 is biased in a direction away from the second lead head 231.
  • the coil nose 21 is divided into three parts: upper, middle, and lower parts.
  • the second lead head 231 is led out from the upper part of the coil nose 21 and bent toward the middle part of the coil nose 21.
  • the first lead head 221 is led out directly from the middle part of the coil nose 21, wherein the first lead head 221 is located at a lower position in the middle part of the coil nose 21.
  • the upper part of the coil nose 21 has a relatively smaller axial space and a relatively larger radial space. Therefore, two of the ring bodies of the conductive ring 1 can be radially arranged side by side at the upper part of the coil nose 21; as for the lower part of the coil nose 21, since the first lead head 221 extends straight, although the radial space is smaller, the axial space is relatively larger. The other two ring bodies of the conductive ring 1 can be axially arranged side by side at the lower part of the coil nose 21. At the same time, the first lead head 221 is not bent, which can also reduce the extrusion with the coil nose 21.
  • two ring bodies are adjacent to the first lead head 221 and are arranged along the axial direction of the coil nose 21, and the other two ring bodies are adjacent to the second lead head 231 and are arranged along the radial direction of the coil nose 21.
  • the stator lead may also include a binding portion 3 for binding the first lead head 221, the second lead head 231 and the conductive ring 1, as shown in FIG1.
  • the binding portion 3 may be used to wrap and bind the first lead head 221, the second lead head 231 and the entire ring body of the conductive ring 1, so that the first lead head 221, the second lead head 231 and the entire ring body of the conductive ring 1 form a stable and unified whole, thereby improving vibration resistance and environmental adaptability.
  • some parts may be bound separately and then all parts may be bound.
  • the traction motor provided in the present application further includes a junction box 4;
  • the stator lead in the traction motor, the stator lead includes a first lead segment and a second lead segment distributed along the length direction thereof, for example, the stator lead is divided into two along its length direction, one segment of the stator lead is the first lead segment, and the other segment of the stator lead is the second lead segment;
  • the aforementioned first lead segment is provided with a coil nose 21, a first lead head 221 and a second lead head 231, and it can be seen that the first lead segment is used for assembly with the conductive ring 1;
  • the aforementioned second lead segment is used for connection with the junction box 4.
  • the second lead segment can be connected to the junction box 4 through a copper bus 232, for example, the first lead 22 and the second lead 23 of the second lead segment are directly processed by the copper bus 232, and there is no need to additionally weld lead joints to the first lead 22 and the second lead 23 of the second lead segment, so that the space of the junction box 4 can be fully utilized.
  • the copper busbar 232 is provided with at least two mounting holes 2321 and first fasteners respectively passing through each mounting hole 2321, and the first fasteners provided in the mounting holes 2321 are used to lock the copper busbar 232 and the junction box 4.
  • the junction box 4 used in the present application is specifically a non-magnetic steel junction box 4, and the non-magnetic steel junction box 4 has an L-shaped cavity inside.
  • the copper busbar 232 and the non-magnetic steel junction box 4 are assembled, the copper busbar 232 can be arranged at the corner of the L-shaped cavity and bent along the corner, as shown in Figure 2. This example can avoid the eddy current effect generated by large current and improve the operating performance of the motor.
  • the traction motor provided in the present application also includes a cable 5 connected to the copper bus 232.
  • the junction box 4 may include clamps 41 distributed in pairs, pads 42 distributed in pairs and arranged between a pair of clamps 41, a junction box bracket 44 arranged between a pair of pads 42, and a second fastener 43 for locking the pair of clamps 41; wherein any one of the clamps 41 is provided with an open groove 411, and the openings of the open grooves 411 of a pair of clamps 41 face each other and are both toward the pad 42.
  • the cable 5 is inserted into the opening groove 411 of any clamping plate 41 along the radial direction of the guide, so that the cable 5 is inserted into the opening groove 411 laterally; then, the two pads 42 and the two clamping plates 41 are pressed against the two opposite sides of the junction box bracket 44 from the inside to the outside in turn, at which time, the two pads 42 are pressed against the two opposite sides of the junction box bracket 44, and the two clamping plates 41 are pressed against the two opposite sides of the aforementioned two pads 42, and at the same time, the two clamping plates 41 can be locked and fixed by fasteners, so that the two clamping plates 41 firmly clamp the two pads 42 and the junction box bracket 44 therein, thereby clamping the cable 5.
  • a clamping plate 41 can be provided with multiple opening grooves 411 for clamping multiple cables 5 respectively, for example, a clamping plate 41 can be provided with three opening grooves 411, and the six opening grooves 411 of the two clamping plates 41 can be used to clamp six cables 5 respectively.
  • a pair of clamping plates 41 have the same structure, and the opening slots 411 provided on the clamping plates 41 can be adapted to cables 5 of different shapes and sizes, thereby reducing the number of types of clamps for the cable 5 and the cost of making molds.
  • the opening groove 411 can be specifically set as a U-shaped groove; at the same time, a countersunk screw is provided between the backing plate 42 and any one of the clamping plates 41.
  • the countersunk screw is used to lock a pair of clamping plates 41.
  • the countersunk screw provided on one of the clamping plates 41 penetrates and locks the backing plate 42 and the clamping plate 41, and the multiple countersunk screws provided on the two clamping plates 41 can fix both clamping plates 41 to the backing plate 42.
  • the countersunk screws provided on the two clamping plates 41 are staggered.
  • the traction motor further includes a terminal 6 disposed between the copper busbar 232 and the cable 5; referring to FIG6 , the terminal 6 is sleeved on the end of the cable 5 and connected to the copper busbar 232, and the terminal 6 has a step surface that is engaged with the junction box.
  • the terminal 6 with a step surface can be molded from a copper tube with a step.
  • a traction motor is provided with a plurality of cables 5. As shown in FIG6 , six cables 5 are installed in the traction motor. The six cables 5 can be arranged opposite to each other in pairs and close to each other, thus saving wiring space in the junction box.
  • the traction motor provided in the present application is designed with a new parallel head structure for the first lead segment of the stator lead, which can effectively avoid damage to the insulation layer of the lead head.
  • the winding part 3 is used to bind the conductive ring 1 and the parallel head structure as a whole to achieve structural integration, thereby improving the vibration resistance of the stator and the structural compactness of the motor;
  • the traction motor provided in the present application divides the stator lead into a first lead segment and a second lead segment, and the structural forms of the first and second lead segments are designed respectively according to different installation requirements at both ends of the stator lead along the length direction, which is convenient to install and reliable to connect;
  • the junction box 4 connected to the second lead segment adopts non-magnetic steel to reduce eddy current effect.
  • the junction box 4 adopts a clamping plate 41 and a pad 42 to lock the cable 5, which is easy to operate and reduces costs.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

La présente invention concerne un moteur de traction, comprenant un fil de stator et une bague conductrice. Le fil de stator est pourvu d'une partie nez de bobine, d'un premier fil et d'un second fil ; la partie nez de bobine fait saillie du bord vers le centre, une première tête de fil du premier fil pénètre à travers le centre de la partie nez de bobine et est orientée vers l'extérieur, et une seconde tête de fil du second fil pénètre à travers le bord de la partie nez de bobine et est orientée vers l'extérieur ; la première tête de fil située à l'extérieur de la partie nez de bobine s'étend de manière rectiligne, la seconde tête de fil située à l'extérieur de la partie nez de bobine est courbée vers la première tête de fil et la seconde tête de fil et la première tête de fil sont disposées côte à côte, et une pluralité de corps de bague de la bague conductrice sont respectivement disposés sur la périphérie de la première tête de fil et de la seconde tête de fil, qui sont disposées côte à côte. Selon le moteur de traction, le degré de courbure de la première et de la seconde tête de fil est réduit par l'ajustement de la relation de position entre la première tête de fil, la seconde tête de fil et la partie nez de bobine, le risque d'endommagement de l'isolation du fil est réduit, un espace suffisant pour le montage de la bague conductrice est réservé autour de la partie nez de bobine, et la compacité et la stabilité structurelles d'une pluralité de parties sont améliorées ; une telle configuration est adaptée aux moteurs à structure compacte.
PCT/CN2022/143024 2022-10-17 2022-12-28 Moteur de traction WO2024082444A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202222735336.5U CN218183109U (zh) 2022-10-17 2022-10-17 一种牵引电机
CN202222735336.5 2022-10-17

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WO2024082444A1 true WO2024082444A1 (fr) 2024-04-25

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PCT/CN2022/143024 WO2024082444A1 (fr) 2022-10-17 2022-12-28 Moteur de traction

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WO (1) WO2024082444A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421269C1 (de) * 1994-06-16 1995-10-12 Vem Elektroantriebe Gmbh Anordnung der Wickelköpfe in Ständern von oberflächengekühlten Drehstrommaschinen ohne inneren Kühlkreislauf
CN103138504A (zh) * 2011-11-24 2013-06-05 天津市天发重型水电设备制造有限公司 一种新型定子线圈引线整头设计及制造工艺
CN203554124U (zh) * 2013-11-18 2014-04-16 南车成都机车车辆有限公司 机车用交流牵引电动机引出线夹
CN204243954U (zh) * 2014-12-19 2015-04-01 南车株洲电机有限公司 一种电机及其电机定子
CN112491190A (zh) * 2020-12-15 2021-03-12 中车株洲电机有限公司 牵引电机定子
CN113595314A (zh) * 2021-07-02 2021-11-02 中车永济电机有限公司 一种电机用紧凑型接线盒及三相引出线结构
CN216122039U (zh) * 2021-08-06 2022-03-22 广西玉柴机器股份有限公司 一种旋变后置带线缆固定结构的多环形冷却水道增程器
CN115498831A (zh) * 2022-10-26 2022-12-20 成都中车电机有限公司 一种交流牵引电动机联线结构及绑扎方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421269C1 (de) * 1994-06-16 1995-10-12 Vem Elektroantriebe Gmbh Anordnung der Wickelköpfe in Ständern von oberflächengekühlten Drehstrommaschinen ohne inneren Kühlkreislauf
CN103138504A (zh) * 2011-11-24 2013-06-05 天津市天发重型水电设备制造有限公司 一种新型定子线圈引线整头设计及制造工艺
CN203554124U (zh) * 2013-11-18 2014-04-16 南车成都机车车辆有限公司 机车用交流牵引电动机引出线夹
CN204243954U (zh) * 2014-12-19 2015-04-01 南车株洲电机有限公司 一种电机及其电机定子
CN112491190A (zh) * 2020-12-15 2021-03-12 中车株洲电机有限公司 牵引电机定子
CN113595314A (zh) * 2021-07-02 2021-11-02 中车永济电机有限公司 一种电机用紧凑型接线盒及三相引出线结构
CN216122039U (zh) * 2021-08-06 2022-03-22 广西玉柴机器股份有限公司 一种旋变后置带线缆固定结构的多环形冷却水道增程器
CN115498831A (zh) * 2022-10-26 2022-12-20 成都中车电机有限公司 一种交流牵引电动机联线结构及绑扎方法

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