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WO2014115775A1 - Structure de navette de moteur électrique et son procédé de fabrication - Google Patents

Structure de navette de moteur électrique et son procédé de fabrication Download PDF

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Publication number
WO2014115775A1
WO2014115775A1 PCT/JP2014/051277 JP2014051277W WO2014115775A1 WO 2014115775 A1 WO2014115775 A1 WO 2014115775A1 JP 2014051277 W JP2014051277 W JP 2014051277W WO 2014115775 A1 WO2014115775 A1 WO 2014115775A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding
bobbin
stator core
electric motor
mold resin
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2014/051277
Other languages
English (en)
Japanese (ja)
Inventor
谷本　勉
金子　雄太郎
山際　正憲
茂夫 桜井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Nissan Motor Co Ltd
Original Assignee
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Nissan Motor Co Ltd
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 Meidensha Corp, Meidensha Electric Manufacturing Co Ltd, Nissan Motor Co Ltd filed Critical Meidensha Corp
Priority to JP2014558596A priority Critical patent/JP5900662B2/ja
Publication of WO2014115775A1 publication Critical patent/WO2014115775A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • H02K9/223—Heat bridges
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/12—Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/12—Machines characterised by the bobbins for supporting the windings

Definitions

  • the present invention relates to a bobbin structure of an electric motor that is mounted on a stator core and wound around an outer side, and a manufacturing method thereof.
  • the filler, the bobbin, and the winding are arranged in this order from the stator core side toward the outside. That is, the filler does not flow between the bobbin and the winding, and an air layer having a high thermal resistance exists around the winding. Therefore, the heat generated from the winding is transmitted to the filler via the air layer and the bobbin, and finally radiated from the stator core to the outside of the electric motor. That is, in this conventional electric motor bobbin structure, both the air layer having a high thermal resistance and the bobbin having a relatively high thermal resistance are factors of thermal resistance. For this reason, it is difficult to efficiently conduct heat from the winding to the stator core, and it has not been possible to improve heat transfer.
  • the present invention has been made paying attention to the above problems, and provides a bobbin structure for an electric motor capable of efficiently transferring heat generated from windings to a stator core and improving heat transfer performance, and a method for manufacturing the same. With the goal.
  • the bobbin structure for an electric motor includes a stator core, a bobbin, a winding, and a mold resin.
  • the bobbin is made of an insulator, and is provided on the outside of the stator core and wound with a winding, and a boring portion formed on the winding support and covered with the winding.
  • the mold resin is a resin having higher thermal conductivity than the bobbin, and integrally seals the stator core, the bobbin, and the winding. Furthermore, the mold resin is filled into at least a part of the lightening portion and brought into contact with the stator core and the winding.
  • the stator core, the bobbin, and the winding are integrally sealed with a mold resin having higher thermal conductivity than the bobbin, and at least a part of the lightening portion is filled.
  • a region in which the winding support part and the mold resin are interposed and a region in which only the mold resin is interposed are provided between the stator core and the winding.
  • FIG. 1 is a perspective view showing a bobbin of Example 1.
  • FIG. 3 is a flowchart showing a manufacturing procedure of the molded stator of Example 1. It is explanatory drawing which shows the injection direction at the time of injecting mold resin.
  • FIG. 3 is an explanatory diagram illustrating a heat conduction path in the bobbin structure according to the first embodiment.
  • FIG. 6 is a perspective view showing a bobbin in a bobbin structure according to a second embodiment.
  • FIG. 6 is a perspective view showing a bobbin in a bobbin structure according to a third embodiment.
  • FIG. 6 is a perspective view showing a bobbin in a bobbin structure according to a fourth embodiment. It is principal part sectional drawing which shows the mold stator to which the bobbin structure of Example 4 was applied.
  • FIG. 10 is a perspective view showing a bobbin in a bobbin structure according to a fifth embodiment.
  • Example 1 First, the configuration of the bobbin structure of the electric motor according to the first embodiment will be described by dividing it into “configuration of application example of bobbin structure”, “configuration of mold stator”, “configuration of bobbin”, and “procedure for manufacturing bobbin structure”.
  • FIG. 1 is a longitudinal sectional view showing a motor to which the bobbin structure of the electric motor according to the first embodiment is applied.
  • the application example of the bobbin structure of the electric motor of Example 1 is demonstrated.
  • a motor (electric motor) 1 shown in FIG. 1 includes a cylindrical molded stator 3 fixed inside a motor case 2 and a rotor 4 arranged concentrically with a radial gap inside the molded stator 3. ing.
  • the molded stator 3 is provided with a winding 33 as will be described later, and is fixed to the inner peripheral surface of the motor case 2.
  • a water jacket portion 2 a through which cooling water flows along the outer periphery of the mold stator 3 is formed inside the motor case 2.
  • the rotor 4 includes a rotor rotating shaft 4a, a laminated steel plate 4b, and a permanent magnet (not shown).
  • the rotor rotating shaft 4 a is rotatably supported at one end by a first rotor bearing 5 a provided inside the first side surface 2 b that is one side surface of the motor case 2, and is the second side surface of the motor case 2.
  • the tip protrudes from the opening 5c formed in the two side surfaces 2c.
  • a second rotor bearing 5b is fitted inside the opening 5c, and rotatably supports the rotor rotating shaft 4a.
  • the laminated steel plate 4b is fixed to the outer periphery of an end plate 4c fixed to the outer periphery of the rotor rotating shaft 4a, and a permanent magnet (not shown) is embedded in the vicinity of the outer peripheral surface of the laminated steel plate 4b.
  • FIG. 2A is an external perspective view showing a molded stator to which the bobbin structure of the first embodiment is applied
  • FIG. 2B is a perspective view showing the inside of the mold resin
  • FIG. 3 is a cross-sectional view of a main part showing a molded stator to which the bobbin structure of the first embodiment is applied.
  • the configuration of the molded stator of Example 1 will be described with reference to FIGS. 2A to 3.
  • the molded stator 3 includes a stator holder 31, a stator core 32, a winding wire 33, and a mold resin 34.
  • the stator holder 31 is a metal cylinder having a high roundness, and both ends are open.
  • the stator core 32 is formed by connecting a plurality of core segments 32 a shown in FIG. 3 in the circumferential direction of the molded stator 3 to form an annular shape and fixing the same inside the stator holder 31.
  • Each core segment 32 a is configured by laminating a number of T-shaped stator steel plates formed by press-molding electromagnetic steel plates in the axial direction of the mold stator 3.
  • the core segment 32a is formed at the arcuate back yoke portion 35a along the inner peripheral surface of the stator holder 31, the tooth portion 35b protruding from the back yoke portion 35a to the inside of the mold stator 3, and the tip of the tooth portion 35b. And a flange 35c.
  • the winding wire 33 is an electromagnetic wire wound around the tooth portion 35b of each core segment 32a, and is wound around the tooth portion 35b over a plurality of layers as shown in FIG. Further, a bobbin 36 (see FIG. 3) is provided outside the tooth portion 35b, and the winding 33 is wound around the tooth portion 35b via the bobbin 36.
  • the mold resin 34 is a resin having higher thermal conductivity than at least the bobbin 36, and integrally seals the stator core 32, the winding wire 33, and the bobbin 36.
  • the mold resin 34 is injected between the stator core 32 and the winding wire 33, filled between the winding wire 33 and the winding support portion 36a of the bobbin 36, and a lightening portion formed on the winding support portion 36a. 36b is filled.
  • the mold resin 34 filled in the lightening portion 36 b overflows from the lightening portion 36 b and contacts both the stator core 32 and the winding wire 33.
  • FIG. 4 is a perspective view illustrating the bobbin according to the first embodiment.
  • FIG. 5 is an exploded perspective view illustrating the core segment and the bobbin according to the first embodiment.
  • the configuration of the bobbin according to the first embodiment will be described with reference to FIGS. 4 and 5.
  • the bobbin 36 is formed of an insulating material such as resin, and as shown in FIG. 4, has a winding support part 36a, a lightening part 36b, a first flange part 36c, and a second flange part 36d. is doing. Further, the bobbin 36 has a structure that can be divided into two, and is mounted by sandwiching the teeth portion 35b of the stator core 32 along the axial direction of the molded stator 3 as shown in FIG.
  • the winding support part 36a covers the outside of the tooth part 35b and supports the winding 33 wound around the tooth part 35b.
  • the teeth part 35b has a quadrangular prism shape extending toward the inside of the mold stator 3, and the winding support part 36a is provided outside the four corners 35b 'of the tooth part 35b. That is, the winding support portions 36a in the first embodiment are provided at four locations that respectively cover the corner portions 35b ′ of the teeth portions 35b.
  • the said lightening part 36b is a notch part formed in the winding support part 36a, and is covered with the winding 33 wound around the teeth part 35b.
  • gap portions provided between the four winding support portions 36a correspond to the thinned portions 36b and are formed corresponding to the coil end facing surface 35d and the circumferential side surface 35e of the tooth portion 35b.
  • the “coil end facing surface” is a surface facing the coil end of the winding 33 wound around the stator core 32 and is an end surface in the axial direction of the molded stator 3.
  • the “circumferential side surface” is an end surface in the circumferential direction of the mold stator 3.
  • the first and second flange portions 36c and 36d are respectively provided at the end portions of the winding support portion 36a.
  • the first flange portion 36c is interposed between the back yoke portion 35a of the stator core 32 and the winding wire 33, and
  • the two flange portions 36 d are interposed between the flange portion 35 c of the stator core 32 and the winding wire 33.
  • the first flange portion 36c on the back yoke portion 35a side is formed over the entire circumference of the tooth portion 35b.
  • the second flange portion 36d on the side of the flange portion 35c is formed with a communication portion 36e that cuts out the second flange portion 36d and communicates with the lightening portion 36b. That is, in this 2nd flange part 36d, the part corresponding to the thinning part 36b is notched, and only the part which continues from the winding support part 36a is formed.
  • FIG. 6 is a flowchart illustrating a manufacturing procedure of the molded stator according to the first embodiment. Hereinafter, based on FIG. 6, the manufacturing procedure of the mold stator of Example 1 is demonstrated.
  • step S1 the bobbin 36 is mounted on the teeth 35b of the core segment 32a formed by previously laminating a number of electromagnetic steel plates.
  • step S2 after the bobbin 36 is mounted in step S1, the winding wire 33 is wound into a shape that can be engaged with the tooth portion 35b, and then the winding wire 33 is attached to the tooth portion 35b. At this time, the winding wire 33 is attached to the outside of the bobbin 36, is supported by the winding wire support portion 36a, and covers the lightening portion 36b.
  • step S3 following the attachment of the winding wire 33 in step S2, a plurality of core segments 32a to which the winding wire 33 is attached are arranged in an annular shape, and the stator core 32 is assembled.
  • step S4 following the assembly of the stator core 32 in step S3, the stator holder 31 is heated and expanded, and the assembled stator core 32 is fitted inside the expanded stator holder 31, and then cooled. That is, the stator core 32 is fixed to the stator holder 31 by so-called shrink fitting.
  • step S5 following the fixing of the stator core 32 in step S4, a mold (not shown) is attached to the stator holder 31 and the stator core 32.
  • This mold is, for example, a resin mold that is divided into two in the axial direction of the mold stator 3, and is attached by sandwiching the stator holder 31 and the stator core 32 and clamping the mold.
  • step S6 following the mounting of the mold in step S5, the mold resin 34 is injected (filled) into the mold.
  • the molding resin 34 is injected between the tooth portion 35 b of the stator core 32 and the winding wire 33. That is, the mold resin 34 is injected toward the inside of the winding wire 33.
  • the second flange portion 36d on the flange 35c side of the stator core 32 is passed through the second flange portion 36d, A communication portion 36e that communicates with the lightening portion 36b is formed. Therefore, here, the mold resin 34 is injected toward the communication portion 36e.
  • the mold resin 34 that has flowed into the communication portion 36e is first filled into the lightening portion 36b. After that, it overflows from the lightening portion 36b, flows between the winding support portion 36a and the teeth portion 35b, or between the winding support portion 36a and the winding wire 33, and is filled between them. And the gaps between the windings 33 are filled.
  • step S7 following the injection of the mold resin 34 in step S6, the mold resin 34 is cooled and cured, and then the mold is removed and the assembly of the mold stator 3 is completed.
  • FIG. 8A is an explanatory diagram showing a heat conduction path in the bobbin structure of the first comparative example
  • FIG. 8B is an explanatory diagram showing a heat conduction path in the bobbin structure of the second comparative example
  • FIG. 8C is a diagram of the third comparative example. It is explanatory drawing which shows the heat conduction path
  • FIGS. 8A to 8C the bobbin structure of the comparative example and its problem will be described with reference to FIGS. 8A to 8C.
  • the bobbin 61 is provided outside the stator core 60, and the winding 62 is wound around the outside. And after winding the winding 62, the varnish 63 is dripped and the winding 62 is coated with the varnish 63.
  • the heat generated from the winding 62 is transmitted in the order of the winding 62 ⁇ the air layer 64 ⁇ the bobbin 61 ⁇ the air layer 64 ⁇ the stator core 60 as indicated by an arrow in FIG. 8A. Then, heat is radiated from the stator core 60. That is, the air layer 64 and the bobbin 61 having high thermal resistance are interposed between the winding 62 and the stator core 60. For this reason, there is a problem that the heat of the winding 62 is not easily transmitted to the stator core 60 and the heat conduction efficiency is poor.
  • the mold resin 65 having higher thermal conductivity than the bobbin 61 is filled between the bobbin 61 and the winding 62.
  • a mold resin 65 having higher thermal conductivity than the bobbin 61 is filled between the bobbin 61 and the stator core 60.
  • the air layer is filled with the mold resin 65, and heat is transferred through the mold resin 65 as shown by arrows in FIGS. 8B and 8C.
  • the heat conduction performance can be improved as compared with the first comparative example shown in FIG. 8A.
  • the air layer 64 still remains around the bobbin 61 and heat conduction is always performed through the bobbin 61 having lower heat conductivity than the mold resin 65. For this reason, the air layer 64 and the bobbin 61 become thermal resistance factors, and it is difficult to improve the heat conduction efficiency.
  • FIG. 9 is an explanatory diagram illustrating a heat conduction path in the bobbin structure according to the first embodiment.
  • the heat conductive action in the bobbin structure of Example 1 will be described.
  • the bobbin 36 provided on the tooth portion 35b of the stator core 32 includes a winding support portion 36a and a lightening portion 36b. Then, the winding wire 33 is wound around the outside of the tooth portion 35 b via the bobbin 36. At this time, the winding wire 33 is supported by the winding wire support portion 36a and covers the lightening portion 36b. Further, a mold resin 34 having higher thermal conductivity than the bobbin 36 is filled between the stator core 32 and the winding wire 33.
  • the mold resin 34 filled in the hollow portion 36 b of the bobbin 36 is applied to both the stator core 32 and the winding wire 33. In close contact. Further, the mold resin 34 that flows along the outside of the winding support 36 a cannot enter between the bobbin 36 and the stator core 32, and an air layer 64 is generated between the bobbin 36 and the stator core 32. That is, between the stator core 32 and the winding 33, the region X in which the winding support portion 36 a and the mold resin 34 are interposed, and the lightening portion 36 b are filled and contact both the winding 33 and the stator core 32. A region Y in which only the mold resin 34 is interposed is provided.
  • Example 1 As a heat conduction path at the time of radiating the heat generated from the winding 33, a first heat conduction path indicated by an arrow ⁇ in FIG. There are two heat conduction paths that pass through region Y, the second heat transfer path indicated by arrow ⁇ in FIG.
  • the heat generated from the winding 33 is first transmitted to the mold resin 34 filled around the winding 33. Then, it is transmitted to the winding support portion 36 a of the bobbin 36 and is transmitted to the stator core 32 through the air layer 64. That is, in the first heat conduction path (arrow ⁇ ), heat conduction is performed by the same phenomenon as in the second comparative example.
  • the heat generated from the winding 33 is first transmitted to the mold resin 34 filled around the winding 33.
  • the second heat conduction path (arrow ⁇ ) passes through the region Y in which the thinned portion 36b is filled and the mold resin 34 that contacts both the winding wire 33 and the stator core 32 is interposed. Therefore, in the second heat conduction path (arrow ⁇ ), the heat transferred to the mold resin 34 is directly transferred from the mold resin 34 to the stator core 32 and is radiated from the stator core 32.
  • the winding support portion 36a becomes a thermal resistance factor, but this winding support portion 36a ensures insulation between the winding 33 and the stator core 32. Can be secured. That is, when the mold resin 34 is injected, the winding 33 is likely to be displaced due to the impact of the resin inflow, but the winding support portion 36a prevents the winding 33 from being displaced and ensures insulation. be able to. Further, the insulating property of the lightening portion 36b can be ensured by the mold resin 34 flowing into the lightening portion 36b.
  • the teeth portion 35b of the stator core 32 has a quadrangular prism shape, and the winding support portion 36a is provided outside the four corner portions 35b ′ of the teeth portion 35b. Therefore, the lightening portion 36b is formed corresponding to each of the coil end facing surface 35d and the circumferential side surface 35e of the tooth portion 35b.
  • the area where the thinned portion 36b faces the teeth portion 35b can be ensured to be relatively larger than the area where the winding support portion 36a faces the teeth portion 35b, and the second heat having high thermal conductivity. It is possible to dissipate heat mainly using heat conduction through the transmission path (arrow ⁇ ). Therefore, heat conduction can be performed more efficiently and heat dissipation performance can be improved.
  • the other flange portion 36d on the flange portion 35c side is formed with a communication portion 36e that penetrates the flange portion 36d and communicates with the lightening portion 36b. Therefore, when the mold resin 34 is injected, the mold resin 34 flows into the lightening portion 36b through the communication portion 36e. As a result, the mold resin 34 can be stably filled into the thinned portion 36b, and the mold resin 34 can be injected without entraining air.
  • the mold resin 34 can be reliably poured even in a portion where the teeth portion 35b and the winding wire 33 communicate with each other like the thinned portion 36b. Therefore, it is possible to prevent the winding wire 33 from coming into contact with the tooth portion 35 b by the mold resin 34, and to ensure insulation between the tooth portion 35 b and the winding wire 33.
  • a stator core 32 around which the winding wire 33 is wound An insulator having a winding support portion 36 a that covers the outside of the stator core 32 and supports the winding wire 33, and a lightening portion 36 b that is formed on the winding support portion 36 a and is covered with the winding wire 33.
  • a bobbin 36 comprising: The stator core 32, the bobbin 36, and the winding wire 33 are integrally sealed, and a mold resin 34 having higher thermal conductivity than the bobbin 36 is provided. The mold resin 34 is filled into at least a part of the lightening portion 36 b and is brought into contact with the stator core 32 and the winding wire 33. For this reason, the heat generated from the winding 33 can be efficiently transmitted to the stator core 32, and the heat transfer performance can be improved.
  • the stator core 32 has a prismatic teeth portion 35b
  • the said winding support part 36a was set as the structure provided in the outer side of corner
  • the bobbin 36 includes a flange portion 36d formed on at least one end of the winding support portion 36a; A configuration is adopted in which a communicating portion 36e that penetrates through the flange portion 36d and communicates with the lightening portion 36b is provided. For this reason, the mold resin 34 quickly flows into the lightening portion 36b through the communication portion 36e, and the thinning portion 36b can be stably filled with the mold resin 34.
  • a stator core 32 around which the winding wire 33 is wound;
  • An insulator having a winding support portion 36 a that covers the outside of the stator core 32 and supports the winding wire 33, and a lightening portion 36 b that is formed on the winding support portion 36 a and is covered with the winding wire 33.
  • a bobbin 36 comprising:
  • the bobbin structure of the electric motor (motor) 1 includes the stator core 32, the bobbin 36, and the winding wire 33 integrally sealed and a mold resin 34 having higher thermal conductivity than the bobbin 36.
  • the mold resin 34 is injected toward the inner side of the winding wire 33, and at least a part of the lightening portion 36b is The mold resin 34 is filled, and the mold resin 34 filled in the thinned portion 36 b is brought into contact with the stator core 32 and the winding wire 33. For this reason, it is possible to prevent the winding wire 33 from coming into contact with the tooth portion 35b by the mold resin 34 and to ensure insulation between the winding wire 33 and the tooth portion 35b.
  • the bobbin structure of the second embodiment is an example in which the winding support portion is provided along the axial direction of the stator core.
  • FIG. 10 is a perspective view showing the bobbin of the second embodiment.
  • the bobbin structure of the second embodiment will be described with reference to FIG.
  • the bobbin 70 of the second embodiment includes a winding support portion 71, a lightening portion 72, a first flange portion 73a, and a second flange portion 73b.
  • the said winding support part 71 is provided in the outer side of the circumferential direction side surface 35e (refer FIG. 3) of the teeth part 35b of a quadratic prism shape. That is, the winding support 71 in the second embodiment is provided along the axial direction of the stator core 32.
  • the said thinning part 72 is formed corresponding to the coil end opposing surface 35d (refer FIG. 3) of the teeth part 35b. That is, the thinned portion 72 is formed by cutting out a portion facing the coil end facing surface 35d in the winding support portion that covers the entire circumferential surface of the tooth portion 35b.
  • the pair of flange portions 73a and 73b are respectively formed over the entire circumference of the tooth portion 35b, and extend along the back yoke portion 35a and the flange portion 35c (see FIG. 5).
  • the winding support portion 71 of the bobbin 70 is provided along the axial direction of the stator core 32 (see FIG. 5), and the lightening portion 72 is formed on the coil end facing surface 35d of the teeth portion 35b. It is formed in the corresponding position.
  • the “region where the winding support portion 71 and the mold resin are interposed” generated between the stator core 32 and the winding (not shown), which has a relatively high thermal resistance and low thermal conductivity, is the molded stator 3. (See FIG. 2).
  • the “region where only the mold resin is interposed” generated between the stator core 32 and the winding (not shown) having a relatively low thermal resistance and high thermal conductivity is the coil end of the winding (not shown). It will be provided opposite to.
  • the short-axis molded stator 3 having a relatively short dimension in the axial direction it is possible to improve the heat dissipation performance from the coil end that is difficult to dissipate heat.
  • contact between the circumferential side surface 35e of the stator core 32 and a winding (not shown) can be reliably prevented.
  • the winding support portion 71 is configured to be provided along the axial direction of the stator core 32. For this reason, even if it is a mold stator with a comparatively short axial dimension, while improving heat dissipation performance, the insulation of the stator core 32 in the axial direction can be ensured.
  • the bobbin structure of the third embodiment is an example in which the winding support portion is provided at a position corresponding to the coil end portion of the winding.
  • FIG. 11 is a perspective view showing the bobbin of the third embodiment.
  • the bobbin structure of Example 3 will be described with reference to FIG.
  • the bobbin 74 includes a winding support portion 75, a lightening portion 76, and a pair of flange portions 77a and 77b. Further, the bobbin 74 has a structure that can be divided into two via a dividing line 78, and the teeth portion 35b (see FIG. 3) of the stator core 32 is arranged in the circumferential direction of the molded stator 3 (see FIG. 2). The stator core 32 is attached by being sandwiched along.
  • the said winding support part 75 is provided in the outer side of the coil end opposing surface 35d (refer FIG. 3) of the teeth part 35b of a quadratic prism shape. That is, the winding support 71 in the second embodiment is provided at a position corresponding to the coil end of the winding 33 (see FIG. 3).
  • the said thinning part 76 is formed corresponding to the circumferential side surface 35e (refer FIG. 3) of the teeth part 35b.
  • the thinned portion 76 is formed by cutting out a portion facing the circumferential side surface 35e in the winding support portion that covers the entire circumference of the tooth portion 35b.
  • the pair of flange portions 77a and 77b are respectively formed over the entire circumference of the tooth portion 35b, and extend along the back yoke portion 35a and the flange portion 35c (see FIG. 5).
  • the winding support portion 75 of the bobbin 74 is provided at a position corresponding to the coil end of the winding wire 33 (see FIG. 3), and the lightening portion 76 is a circumferential side surface of the tooth portion 35b. It is formed at a position facing 35e.
  • the “region where the winding support 75 and the mold resin are interposed” generated between the stator core 32 and the winding 33, which has a relatively high thermal resistance and low thermal conductivity, is the coil end of the winding 33. It will be provided opposite to.
  • the “region where only the molding resin is interposed” generated between the stator core 32 and the winding (not shown), which has a relatively low thermal resistance and high thermal conductivity, is the mold stator 3 (see FIG. 2). It will be along the axial direction. Thereby, in the long-axis mold stator 3 having a relatively long dimension in the axial direction, it is possible to improve the heat dissipation performance from the circumferential side surface 35e that is difficult to dissipate heat.
  • the circumferential side surface 35e of the stator core 32 and the winding are high. Insulation can also be secured.
  • the winding support portion 71 is provided at a position corresponding to the coil end of the winding 33. For this reason, even if it is a mold stator with a comparatively long axial dimension, heat dissipation performance can be improved.
  • Example 4 The bobbin structure of Example 4 is an example having a partition portion that partitions the outside of the winding.
  • FIG. 12 is a perspective view showing the bobbin of the fourth embodiment.
  • FIG. 13 is a cross-sectional view of a main part showing a molded stator to which the bobbin structure of the fourth embodiment is applied.
  • the bobbin structure of the fourth embodiment will be described with reference to FIGS. 12 and 13.
  • the bobbin 80 of the fourth embodiment includes a winding support portion 81, a lightening portion 82, a pair of flange portions 83 a and 83 b, and a partition portion 84.
  • the winding support part 81, the lightening part 82, and the pair of flange parts 83a and 83b have the same configuration as in the first embodiment, the description thereof is omitted.
  • the partition portion 84 is a flat plate extending toward the inside of the stator core 32 from a circumferential end portion 83 a ′ of one flange portion 83 a interposed between the back yoke portion 35 a of the stator core 32 and the winding wire 33. .
  • the partition part 84 defines the outside of the winding 33 wound around the tooth part 35 b of the stator core 32.
  • Example 4 the adjacent windings 33 are partitioned by the partition portion 84 as shown in FIG.
  • the bobbin 80 has a partition portion 84 that partitions the outside of the winding wire 33. For this reason, contact between adjacent windings 33 can be prevented and insulation can be secured.
  • the bobbin structure of the fifth embodiment is an example in which a communicating portion is provided in the flange portion on the back yoke portion side of the stator core.
  • FIG. 14 is a perspective view showing the bobbin of the fifth embodiment.
  • the bobbin structure of the fifth embodiment will be described with reference to FIG.
  • the bobbin 85 of the fifth embodiment includes a winding support portion 86, a lightening portion 87, a pair of flange portions 88 a and 88 b, and a communication portion 89.
  • the winding support portion 86, the lightening portion 87, and the pair of flange portions 88a and 88b have the same configuration as that of the second embodiment, and thus description thereof is omitted.
  • the communication portion 89 is formed by cutting out a part of one flange portion 88a extending along the back yoke portion 35a (see FIG. 5) of the stator core 32, and penetrates the one flange portion 88a. It communicates with the meat removal portion 87.
  • the resin filling can be quickly performed into the lightening portion 87 via the communication portion 89.
  • the communication portion 36e is formed only on the other flange portion 36d along the flange portion 35c of the stator core 32.
  • the fifth embodiment only one flange portion 88a along the back yoke portion 35a of the stator core 32 is formed.
  • the example which formed the communication part 89 was shown.
  • the present invention is not limited to this, and any of the pair of flange portions may be formed with a communication portion communicating with the lightening portion.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

L'invention concerne une structure de navette de moteur électrique qui est capable de transmettre efficacement la chaleur générée par un enroulement vers un noyau de stator et d'améliorer la performance de transmission de chaleur. Cette structure de navette de moteur électrique comporte : un noyau de stator (32) ; une navette (36) recouvrant l'extérieur du noyau de stator (32) ; un enroulement (33) enroulé autour de l'extérieur du noyau de stator (32) avec une navette (36) intercalée entre eux ; et une résine de moulage (34) permettant de sceller intégralement le noyau de stator (32), la navette (36) et l'enroulement (33) et ayant une conductivité thermique supérieure à celle de la navette (36). La navette (36) a aussi une partie de support d'enroulement (36a) permettant de supporter l'enroulement (33) et une partie de retrait d'épaisseur (36b) formée sur la partie de support d'enroulement (36a) et recouverte par l'enroulement. La résine de moulage (34) est conçue pour remplir au moins une partie de la partie de retrait d'épaisseur (36b) et pour être en contact avec le noyau de stator (32) et l'enroulement (33).
PCT/JP2014/051277 2013-01-25 2014-01-22 Structure de navette de moteur électrique et son procédé de fabrication Ceased WO2014115775A1 (fr)

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JP2017017830A (ja) * 2015-06-30 2017-01-19 トヨタ自動車株式会社 回転電機のステータの製造方法
EP3139474A1 (fr) * 2015-09-02 2017-03-08 Siemens Aktiengesellschaft Machine electrique et procede de fonctionnement d'une telle machine electrique et procede de fabrication
JP2018078749A (ja) * 2016-11-10 2018-05-17 三菱電機株式会社 磁極、磁極を配置した固定子、固定子を備えた回転電機および固定子の製造方法
WO2019123913A1 (fr) * 2017-12-22 2019-06-27 サンデンホールディングス株式会社 Compresseur à entraînement électrique
WO2019121327A1 (fr) * 2017-12-18 2019-06-27 Lsp Innovative Automotive Systems Gmbh Dent de stator et stator ayant une bonne isolation électrique et simultanément une très grande conductivité thermique pour augmenter la puissance de moteurs électriques
JP2020025428A (ja) * 2018-08-08 2020-02-13 群光電能科技股▲ふん▼有限公司 モーター固定子構造体及び固定子ユニット
JP2021048688A (ja) * 2019-09-18 2021-03-25 日本電産トーソク株式会社 モータ、電動ポンプ
JP2021097500A (ja) * 2019-12-17 2021-06-24 日本電産トーソク株式会社 モータ、および電動ポンプ
JP2021197849A (ja) * 2020-06-16 2021-12-27 三菱電機株式会社 固定子及び回転電機
EP3790170A4 (fr) * 2019-03-13 2022-01-26 Top Co., Ltd. Machine tournante et isolateur
DE102018004494B4 (de) 2017-06-12 2023-03-16 Fanuc Corporation Motor und Verfahren zu seiner Herstellung
EP4160881A1 (fr) * 2021-10-01 2023-04-05 Minebea Mitsumi Inc. Moteur
WO2023234266A1 (fr) * 2022-05-31 2023-12-07 株式会社デンソー Stator et machine électrique tournante

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JP2017017830A (ja) * 2015-06-30 2017-01-19 トヨタ自動車株式会社 回転電機のステータの製造方法
US10277089B2 (en) 2015-09-02 2019-04-30 Siemens Aktiengesellschaft Electric machine, method for operating such an electric machine, and production method
WO2017036745A1 (fr) * 2015-09-02 2017-03-09 Siemens Aktiengesellschaft Machine électrique et procédé de fonctionnement d'une machine électrique de ce type ainsi que procédé de fabrication
CN108028569A (zh) * 2015-09-02 2018-05-11 西门子公司 电机和运行这种电机的方法以及制造方法
JP2018526956A (ja) * 2015-09-02 2018-09-13 シーメンス アクチエンゲゼルシヤフトＳｉｅｍｅｎｓ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ 電機およびその製造方法
CN108028569B (zh) * 2015-09-02 2019-07-19 西门子公司 电机和制造方法
EP3139474A1 (fr) * 2015-09-02 2017-03-08 Siemens Aktiengesellschaft Machine electrique et procede de fonctionnement d'une telle machine electrique et procede de fabrication
JP2018078749A (ja) * 2016-11-10 2018-05-17 三菱電機株式会社 磁極、磁極を配置した固定子、固定子を備えた回転電機および固定子の製造方法
DE102018004494B4 (de) 2017-06-12 2023-03-16 Fanuc Corporation Motor und Verfahren zu seiner Herstellung
WO2019121327A1 (fr) * 2017-12-18 2019-06-27 Lsp Innovative Automotive Systems Gmbh Dent de stator et stator ayant une bonne isolation électrique et simultanément une très grande conductivité thermique pour augmenter la puissance de moteurs électriques
CN111512522A (zh) * 2017-12-22 2020-08-07 三电控股株式会社 电动压缩机
WO2019123913A1 (fr) * 2017-12-22 2019-06-27 サンデンホールディングス株式会社 Compresseur à entraînement électrique
JP2019115141A (ja) * 2017-12-22 2019-07-11 サンデンホールディングス株式会社 電動圧縮機
CN110829666A (zh) * 2018-08-08 2020-02-21 群光电能科技股份有限公司 马达定子结构及定子组件
CN110829666B (zh) * 2018-08-08 2021-06-22 群光电能科技股份有限公司 马达定子结构及定子组件
US11043869B2 (en) 2018-08-08 2021-06-22 Chicony Power Technology Co., Ltd. Motor stator structure and stator assembly
JP2020025428A (ja) * 2018-08-08 2020-02-13 群光電能科技股▲ふん▼有限公司 モーター固定子構造体及び固定子ユニット
EP3790170A4 (fr) * 2019-03-13 2022-01-26 Top Co., Ltd. Machine tournante et isolateur
US11955858B2 (en) 2019-03-13 2024-04-09 Top Co., Ltd. Rotary machine and insulator
JP2021048688A (ja) * 2019-09-18 2021-03-25 日本電産トーソク株式会社 モータ、電動ポンプ
JP2021097500A (ja) * 2019-12-17 2021-06-24 日本電産トーソク株式会社 モータ、および電動ポンプ
JP7400436B2 (ja) 2019-12-17 2023-12-19 ニデックパワートレインシステムズ株式会社 モータ、および電動ポンプ
JP2021197849A (ja) * 2020-06-16 2021-12-27 三菱電機株式会社 固定子及び回転電機
JP7487576B2 (ja) 2020-06-16 2024-05-21 三菱電機株式会社 固定子及び回転電機
EP4160881A1 (fr) * 2021-10-01 2023-04-05 Minebea Mitsumi Inc. Moteur
WO2023234266A1 (fr) * 2022-05-31 2023-12-07 株式会社デンソー Stator et machine électrique tournante

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