WO2015140955A1 - Procédé de fabrication de moteur électrique et moteur électrique - Google Patents

Procédé de fabrication de moteur électrique et moteur électrique Download PDF

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Publication number
WO2015140955A1
WO2015140955A1 PCT/JP2014/057492 JP2014057492W WO2015140955A1 WO 2015140955 A1 WO2015140955 A1 WO 2015140955A1 JP 2014057492 W JP2014057492 W JP 2014057492W WO 2015140955 A1 WO2015140955 A1 WO 2015140955A1
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WO
WIPO (PCT)
Prior art keywords
winding
winding connection
electric motor
opening
stator
Prior art date
Application number
PCT/JP2014/057492
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English (en)
Japanese (ja)
Inventor
健一 江上
太一 岡
Original Assignee
日立金属株式会社
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 日立金属株式会社 filed Critical 日立金属株式会社
Priority to JP2016508391A priority Critical patent/JP6414204B2/ja
Priority to PCT/JP2014/057492 priority patent/WO2015140955A1/fr
Publication of WO2015140955A1 publication Critical patent/WO2015140955A1/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
    • H02K3/52—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
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/0056—Manufacturing winding connections
    • H02K15/0068—Connecting winding sections; Forming leads; Connecting leads to terminals
    • 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
    • H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations

Definitions

  • the present invention relates to a method of manufacturing an electric motor and an electric motor including a stator formed by winding a winding around a plurality of magnetic cores, a rotor rotating with respect to the stator, and a bus ring to which the winding is connected.
  • an annular stator fixed to the engine, a rotor rotating with respect to the stator, and a plurality of motor coils provided on the stator correspond to the U phase, the V phase, and the W phase.
  • an annular power distribution component connected in this manner is formed by arranging a plurality of arc-shaped conductive parts in an annular shape and connecting these conductive parts with a mold resin.
  • the plurality of conductive parts are made of an insulated wire whose conductor is covered with an insulator, and bent portions are formed at both ends thereof so as to protrude toward the radially inner side of the stator.
  • the conductor is exposed from the insulator at the bent portion, and a terminal portion to which the winding of the motor coil is connected is formed by the bent portion of the adjacent conductive part.
  • the terminal portion that is, the power distribution component is connected by, for example, soldering or fusing welding.
  • an object of the present invention is to provide a method of manufacturing an electric motor and an electric motor that can be reliably connected to an end of a winding and can improve work efficiency.
  • the present invention provides a stator formed by winding a plurality of magnetic cores arranged in an annular shape, a rotor rotating with respect to the stator, and a concentric shape with the stator.
  • Is a method of manufacturing an electric motor including a bus ring having a winding connection portion to which the winding is connected, and an insertion step of inserting an end portion of the winding into the winding connection portion; A pressurizing step of pressurizing the winding connection portion so that the winding connection portion and an end of the winding are in contact with each other, and energizing the winding connection portion in a state where the winding connection portion is pressurized And a welding step of welding the winding connection portion and the end portion of the winding, and the winding connection portion is formed in an annular shape having an opening at one place, Pressurize the winding connection so that the opening width of the opening is narrower than the thickness of the winding A method for manufacturing an electric motor is provided.
  • the present invention provides a stator formed by winding a plurality of magnetic cores arranged in an annular shape, a rotor rotating with respect to the stator, and the stator. And a bus ring having a winding connection portion to which the winding is connected, the winding connection portion is formed in an annular shape having an opening at one place, and the opening width of the opening is the Provided is an electric motor in which the winding connecting portion and the end of the winding are connected in a state narrower than the thickness of the winding.
  • FIG. 5 is an enlarged perspective view of the terminal portion and its peripheral portion, showing the first to third bus rings.
  • a part of connection process of the winding connection part of the 1st bus ring and the end of a plurality of U phase windings in the electric motor concerning a 2nd embodiment of the present invention is shown, and the end of a plurality of windings It is explanatory drawing which shows the state which the part inserted in the coil
  • a part of the connection process of the winding connection part of the 1st bus ring and the end part of a plurality of U phase windings in the electric motor concerning a 2nd embodiment is shown, and the winding connection part is pressurized. It is explanatory drawing which shows the state which exists.
  • a part of connection process of the winding connection part of the 1st bus ring and the end of a plurality of U phase windings in the electric motor concerning a 2nd embodiment is shown, and a winding connection part and a plurality of windings It is explanatory drawing which shows the state which the edge part of is welded.
  • a part of connection process of the winding connection part of the 1st bus ring and the end of a plurality of U phase windings in an electric motor concerning a 3rd embodiment of the present invention is shown, and the end of a plurality of windings is shown. It is explanatory drawing which shows the state which the part inserted in the coil
  • a part of connection process of the winding connection part of the 1st bus ring and the end of a plurality of windings of U phase in the electric motor concerning a 3rd embodiment is shown, and the winding connection part is pressurized. It is explanatory drawing which shows the state which exists.
  • the electric motor which concerns on 3rd Embodiment shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a several U-phase coil
  • the electric motor which concerns on the 4th Embodiment of this invention shows a part of connection process of the winding connection part of the 1st bus ring, and the edge part of a some U-phase coil
  • the electric motor which concerns on 4th Embodiment WHEREIN The part of the connection process of the winding connection part of the 1st bus ring and the edge part of a some U-phase coil
  • the electric motor which concerns on 4th Embodiment WHEREIN A part of connection process of the winding connection part of a 1st bus ring and the edge part of a some U-phase coil
  • the electric motor which concerns on the 5th Embodiment of this invention shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a some U-phase coil
  • the electric motor which concerns on 5th Embodiment shows a part of connection process of the winding connection part of the 1st bus ring, and the edge part of the some winding of U phase, and the winding connection part is pressurized. It is explanatory drawing which shows the state which exists.
  • the electric motor which concerns on 5th Embodiment shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a several U-phase coil
  • the electric motor which concerns on the 6th Embodiment of this invention shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a some U-phase coil
  • the electric motor which concerns on 6th Embodiment shows a part of connection process of the winding connection part of the 1st bus ring, and the edge part of the some winding of U phase, and the winding connection part is pressurized. It is explanatory drawing which shows the state which exists.
  • the electric motor which concerns on 6th Embodiment shows a part of connection process of the winding connection part of a 1st bus ring, and the edge part of a several U-phase coil
  • FIG. 1 is a schematic diagram for explaining an outline of a configuration example of the electric motor 1 according to the first embodiment of the present invention.
  • the electric motor 1 includes a stator 3 that is a stator, a rotor 2 that rotates with respect to the stator 3, and first to fourth bus rings 41 to 44 to which a winding 32 is connected.
  • a winding 32 an enameled wire in which a wire is covered with enamel can be used.
  • the rotor 2 includes a shaft 21 that is rotatably supported on the same axis as the stator 3 by a bearing (not shown), and a cylinder that is fixed to the outer peripheral surface of the shaft 21 and has N and S poles alternately magnetized in the circumferential direction.
  • Shaped magnet 22 is
  • the stator 3 is configured by winding a winding 32 around a plurality (24 in the present embodiment) of magnetic cores 31 arranged in an annular shape around the rotation axis O of the shaft 21.
  • the 24 magnetic cores 31 are composed of eight U-phase magnetic cores 31U, eight V-phase magnetic cores 31V, and eight W-phase magnetic cores 31.
  • the U-phase magnetic core 31U, the V-phase magnetic core 31V, and the W-phase magnetic core 31W are arranged in this order.
  • a U-phase winding 32 ⁇ / b> U is wound around the U-phase magnetic core 31 ⁇ / b> U as the winding 32.
  • the U-phase winding 32 ⁇ / b> U has one end 321 ⁇ / b> U that is electrically connected to the first bus ring 41 and the other end 322 ⁇ / b> U that is electrically connected to the fourth bus ring 44. Has been.
  • a V-phase winding 32 ⁇ / b> V is wound around the V-phase magnetic core 31 ⁇ / b> V as the winding 32.
  • the V-phase winding 32 ⁇ / b> V has one end 321 ⁇ / b> V electrically connected to the second bus ring 42, and the other end 322 ⁇ / b> V electrically connected to the fourth bus ring 44. Has been.
  • a W-phase winding 32 ⁇ / b> W is wound around the W-phase magnetic core 31 ⁇ / b> W as the winding 32.
  • the W-phase winding 32 ⁇ / b> W has one end 321 ⁇ / b> W electrically connected to the third bus ring 43 and the other end 322 ⁇ / b> W electrically connected to the fourth bus ring 44. Has been.
  • the fourth bus ring 44 includes the other end 322U of the U-phase winding 32U, the other end 322V of the V-phase winding 32V, and the other end 322W of the W-phase winding 32W. It functions as an electrically connected neutral phase bus ring.
  • One end 321U of the U-phase winding 32U is located on the V-phase winding 32V side in the circumferential direction of the stator 3, and the other end 322U is a W-phase winding 32W in the circumferential direction of the stator 3.
  • One end 321V of the V-phase winding 32V is located on the W-phase winding 32W side in the circumferential direction of the stator 3, and the other end 322V is a U-phase winding 32U in the circumferential direction of the stator 3. Located on the side.
  • One end 321W of the W-phase winding 32W is located on the U-phase winding 32U side in the circumferential direction of the stator 3, and the other end 322W is a V-phase winding 32V in the circumferential direction of the stator 3. Located on the side.
  • the first to third bus rings 41 to 43 are connected to power supply terminals 410, 420, and 430, respectively, and the sine whose phase is shifted by 120 ° from the inverter (not shown) via the power supply terminals 410, 420, and 430.
  • a wavy drive current is supplied to the first to third bus rings 41 to 43.
  • a rotational magnetic field is formed in the stator 3 by this driving current, and the magnet 22 receives the rotational force by the attractive force and the repulsive force due to the rotational magnetic field and rotates the shaft 21 around the rotational axis O.
  • FIG. 2 is a plan view of the stator 3 assembled with the first to third bus rings 41 to 43 as viewed from the direction of the rotation axis O of the shaft 21.
  • FIG. 3 is a perspective view illustrating a configuration example of the magnetic core assembly 30.
  • the stator 3 is configured by arranging a plurality (24 in this embodiment) of magnetic core assemblies 30 formed by winding a winding 32 around a magnetic core 31 in an annular shape.
  • the magnetic core assembly 30 has an insulating insulator 33 mounted on a magnetic core 31 formed by laminating a plurality of electromagnetic steel plates 310, and the insulator 33 is interposed via the insulator 33.
  • a winding 32 is wound around the outside of the magnetic core 31.
  • the insulator 33 is opposed to an insulating portion 336 (shown by a broken line in FIG. 3) interposed between the magnetic core 31 and the winding 32 with the insulating portion 336 sandwiched in the radial direction of the rotor 2 (see FIG. 1).
  • An outer flange 335 projecting from 332 toward the opposite side of the first wall 331, and a third wall erected so as to face the second wall 332 from the end of the outer flange 335 It has the part 333 integrally.
  • the first to third wall portions 331 to 333 are formed on the first wall portion 331, the second wall portion 332, and the third wall portion 333 along the radial direction of the rotor 2 from the rotation axis O side of the shaft 21. They are erected in order.
  • the second wall portion 332 is formed with a second insertion portion 332a through which one end portion 321 of the winding 32 is inserted, and the one end portion 321 of the winding 32 is rotated from the insertion portion 332a to the shaft 21. It is pulled out along a direction parallel to the axis O direction.
  • the first wall portion 331 is formed with a first insertion portion 331a through which the other end portion 322 of the winding 32 is inserted, and the other end portion 322 of the winding 32 is connected to the shaft from the first insertion portion 331a. 21 is drawn toward the rotation axis O side.
  • the insulator 33 has a holding portion 330 that holds the first to third bus rings 41 to 43.
  • the holding unit 330 includes a part of the second wall part 332, a third wall part 333, and a part of the second wall part 332 and the third wall part 333. It is comprised by the outer collar part 335 to connect.
  • the outer flange portion 335 functions as the bottom portion of the holding portion 330.
  • holding section 330 is provided on the outer peripheral side of winding 32 (U-phase winding 32U, V-phase winding 32V, and W-phase winding 32W).
  • the third wall portion 333 is formed with a fitting recess 333a into which the fixing member 40 for fixing the first to third bus rings 41 to 43 is fitted.
  • FIG. 4 shows the first to third bus rings 41 to 43, and is an enlarged perspective view of the terminal portions 41a, 42a, 43a and their peripheral portions.
  • the first to third bus rings 41 to 43 are arranged side by side along the direction of the rotation axis O (see FIG. 1) of the shaft 21, and a plurality (24 in this embodiment) are arranged. Are held by the holding portion 330 of the stator 3 while being fixed together by the fixing member 40.
  • the first to third bus rings 41 to 43 are formed by bending a linear conductive member in which a central conductor 400a made of a highly conductive metal such as copper is covered with an insulator 400b made of resin. .
  • the first bus ring 41 protrudes inward in the radial direction of the stator 3, and a plurality (eight in this embodiment) of terminal portions 41 a to which one end 321 U of the U-phase winding 32 U is connected, and the stator 3 (eight in the present embodiment) arcuate portions 412 arranged along the circumferential direction.
  • the plurality of terminal portions 41 a are provided between the plurality of arc portions 412. Further, at both ends of the first bus ring 41, the central conductor 400a is exposed from the insulator 400b, and the power supply terminal 410 is connected to the exposed central conductor 400a by crimping or crimping.
  • the second bus ring 42 includes a plurality of (in this embodiment, eight) terminal portions 42a to which one end portion 321V of the V-phase winding 32V is connected. , And a plurality (eight in this embodiment) of arc portions 422.
  • power supply terminals 420 are connected to both ends of the second bus ring 42.
  • the third bus ring 43 includes a plurality of (eight in the present embodiment) to which one end 321W of the W-phase winding 32W is connected. Terminal portion 43a and a plurality (eight in this embodiment) of arc portions 432 are provided. In addition, power supply terminals 430 are connected to both ends of the third bus ring 43.
  • the terminal portion 41a of the first bus ring 41 has one end of the U-phase winding 32U.
  • the terminal portion 42a of the second bus ring 42 is at the pulling position of one end 321V of the V-phase winding 32V, and the terminal portion 43a of the third bus ring 43 is W-phase winding. It arrange
  • One end portions 321U, 321V, and 321W of the U-phase winding 32U, the V-phase winding 32V, and the W-phase winding 32W extend along a direction parallel to the rotation axis O of the shaft 21 from the stator 3 side.
  • the first to third bus rings 41 to 43 are inserted into the terminal portions 41a, 42a and 43a, respectively.
  • FIG. 4 shows a state where one end 321V of the V-phase winding 32V among the one end 321U, 321V, 321W is inserted into the terminal portion 42a.
  • FIGS. 5A to 5C are explanatory views showing a connection process between the winding connection portion 411 of the first bus ring 41 and one end portion 321U of the U-phase winding 32U, and FIG.
  • FIG. 5B shows the state where the winding connection 411 is pressurized
  • FIG. 5C shows the U-phase of the winding connection 411.
  • one end 321U of the winding 32U is welded.
  • one end 321U of the U-phase winding 32U is indicated by a broken line.
  • the terminal portion 41a includes a winding connection portion 411 formed in an annular shape having an opening 411a at one place, and a winding connection portion 411 sandwiching the pair of adjacent arc portions 412a and 412b and the opening 411a.
  • the pair of extending portions 413 and 414 extend in parallel from the respective end portions of the pair of adjacent arc portions 412a and 412b toward the radially inner side of the stator 3 (see FIG. 2). ing.
  • the length L 1 in the extending direction of the pair of extending portions 413 and 414 is from the arc portions 412a and 412b to the distal end in the radial direction of the first bus ring 41 in the winding connecting portion 411.
  • the distance L 2 is about 1/10 to 9/10.
  • the length L 1 in the extending direction of the pair of extending portions 413, 414 is the distance L 2 from the arc portions 412 a, 412 b to the radial tip of the first bus ring 41 in the winding connection portion 411. It is more desirable to be about 1/5 to 3/5.
  • connection method between the winding connection portion 411 of the terminal portion 41a and the one end portion 321U of the U-phase winding 32U is to insert the one end portion 321U of the U-phase winding 32U into the winding connection portion 411.
  • a step (see FIG. 5A) a pressurizing step (see FIG. 5B) for pressurizing the winding connection portion 411 so that the winding connection portion 411 and one end 321U of the U-phase winding 32U are in contact with each other;
  • a welding step (see FIG. 5C) in which the winding connection portion 411 is energized to weld the winding connection portion 411 and one end portion 321U of the U-phase winding 32U.
  • the winding connection between the pair of electrodes 11 and 12 is performed so that the opening width d of the opening 411a of the winding connection portion 411 is narrower than the thickness of the U-phase winding 32U. Pressure is applied in the direction of the arrow in FIG.
  • the thickness of the winding refers to the narrowest dimension in the width direction in the cross section of the end of the winding. For example, if the cross section is a circular winding (round winding), the outer diameter is thick, and if the cross section is a rectangular winding (flat winding), the short side Length becomes thickness.
  • the opening width d of the opening 411a and the distance between the opposing surfaces 413a and 414a of the pair of extending portions 413 and 414 are formed to be equal. Therefore, the distance between the opposing surfaces 413a and 414a of the pair of extending portions 413 and 414 approaches the distance shorter than the thickness dimension of the U-phase winding 32U by the pressurizing step.
  • a current is passed through the winding connection portion 411 through the pair of electrodes 11 and 12 while the winding connection portion 411 is pressurized, and the winding connection portion 411 and the U-phase winding are wound.
  • the one end 321U of the wire 32U is welded and electrically connected. In this welding process, for example, welding by fusing is used.
  • the winding connecting portion 411 is pressed so that the opening width d of the opening 411a of the winding connecting portion 411 is narrower than the thickness of the U-phase winding 32U.
  • the winding 32U does not come out of the winding connection part 411 through the opening 411a, and the connection between the winding connection part 411 and one end 321U of the U-phase winding 32U can be reliably performed. It leads to improvement of efficiency.
  • 6A to 6C show a connection process between the winding connection portion 411 of the first bus ring 41 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the second embodiment of the present invention.
  • 6A is a state in which one end 341 of the plurality of windings 34 is inserted into the winding connection part 411
  • FIG. 6B is a state in which the winding connection part 411 is pressurized
  • FIG. 6C is a state in which the winding connection portion 411 and one end portion 341 of the plurality of windings 34 are welded.
  • one end 341 of the plurality of windings 34 is indicated by a broken line.
  • the electric motor 1 according to the present embodiment is different from the electric motor 1 according to the first embodiment, and a plurality of (15 in the present embodiment) windings 34 are bundled to form a magnetic core 31 (FIG. 1 and FIG. 1). (See FIG. 3).
  • the plurality of windings 34 are windings having a circular cross section (round windings), each of which is thinner than the winding 32 in the first embodiment.
  • One end portion 341 of the plurality of windings 34 is inserted into the winding connection portion 411 of the first bus ring 41. The same applies to the second and third bus rings 42 and 43.
  • the winding connection portion 411 is formed by a pair of electrodes 11 and 12 so as to close the opening 411a of the winding connection portion 411.
  • the pressure is applied in the direction of the arrow in FIG. 6B. That is, the opposing surfaces 413a and 414a of the pair of extending portions 413 and 414 come into contact with each other by the pressurizing process.
  • the present invention is not limited to this, and the opening width of the opening 411a may be narrower than the thickness of the winding 34, as in the first embodiment.
  • a current is passed through the winding connection portion 411 by the pair of electrodes 11 and 12 in a state where the winding connection portion 411 is pressurized, and one end portion 341 of the winding connection portion 411 and the plurality of windings 34. Are electrically connected. Therefore, in the electric motor 1 according to the present embodiment, the winding connection portion 411 and the end portions 341 of the plurality of windings 34 are electrically connected in a state where the opening 411a of the winding connection portion 411 is closed. Yes.
  • each of the plurality of windings 34 is smaller than the thickness of the winding 32 in the first embodiment, when the winding connection portion 411 is pressed in the pressurizing step, the winding 34 However, the opening 411a becomes narrower than the thickness of the winding 34 when the winding connecting portion 411 is pressurized, so that the winding 34 is pulled out from the winding connecting portion 411. Can be suppressed.
  • the winding connection portion 411 is heated uniformly over the entire circumference by energizing the winding connection portion 411 with the opening 411a of the winding connection portion 411 closed. Since unevenness in welding between the winding connection portion 411 and the end portions 341 of the plurality of windings 34 is reduced, the plurality of windings 34 can be stably connected to the winding connection portion 411 without breaking.
  • 7A to 7C show a connection process between the winding connection portion 411 of the first bus ring 41 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the third embodiment of the present invention.
  • 7A is a state in which one end 341 of the plurality of windings 34 is inserted into the winding connection part 411
  • FIG. 7B is a state in which the winding connection part 411 is pressurized
  • FIG. 7C is a state in which the winding connection portion 411 and one end portion 341 of the plurality of windings 34 are welded.
  • one end 341 of the plurality of windings 34 is indicated by a broken line.
  • the pair of extending portions 413 and 414 of the terminal portion 41 a has an opening D 2 between the ends on the arc portions 412 a and 412 b side.
  • the winding connection portion 411 and the end portions 341 of the plurality of windings 34 are electrically connected in a state larger than the opening width d 2 of 411a.
  • the opening width d 2 of the opening 411a, as in the first embodiment is smaller than the thickness of the winding 34.
  • the pair of extending portions 413 and 414 is a distance between the end portions on the arc portions 412a and 412b side in the pressurizing step.
  • Change amount (D 1 -D 2 ) is smaller than the change amount (d 1 -d 2 ) of the opening width of the opening 411a.
  • the circular arc portion 412a of the pair of extending portions 413 and 414 before entering the pressing step the opening width of the distance D 1 and the opening 411a between the ends of 412b side d Equal to 1 .
  • the distance between the ends on the arc portions 412a and 412b side of the pair of extending portions 413 and 414 is specifically the end portions on the arc portions 412a and 412b side of the pair of extending portions 413 and 414.
  • the distance between the opposing surfaces 413a and 414a is shown. Therefore, the opposing surfaces 413a and 414a of the pair of extending portions 413 and 414 are closer to the opening 411a side than the arc portions 412a and 412b side.
  • the pair of extending portions 413 and 414 has the first bus ring because the change amount of the distance between the end portions on the arc portions 412a and 412b side in the pressurizing process is smaller than the change amount of the opening width of the opening 411a.
  • the winding connection portion 411 and the end portion 341 of the winding 34 can be connected without changing the radial dimension at 41.
  • FIGS. 8A to 8C a method of connecting the winding connection portion and the ends of the plurality of windings in the electric motor 1 according to the fourth embodiment of the present invention will be described with reference to FIGS. 8A to 8C.
  • the connection method between the winding connection portion 411 of the first bus ring 41 and the end portions 341 of the plurality of windings 34 will be described below as an example. To do.
  • FIG. 8A to 8C show the connection process between the winding connection portion 411 of the first bus ring 41 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the fourth embodiment of the present invention.
  • 8A is a state in which one end 341 of the plurality of windings 34 is inserted into the winding connection part 411
  • FIG. 8B is a state in which the winding connection part 411 is pressurized
  • FIG. 8C is a state in which the winding connection portion 411 and one end portion 341 of the plurality of windings 34 are welded.
  • one end 341 of the plurality of windings 34 is indicated by a broken line.
  • the electric motor 1 has the winding connection portion 411 and the end portions 341 of the plurality of windings 34 in a state where the opening 411a of the winding connection portion 411 is closed. And are electrically connected.
  • the arc portion 412a of the pair of extending portions 413 and 414 of the pressurization, the arc portion 412a of the pair of extending portions 413 and 414 at a distance D 1 and after pressing between the ends of 412b side , 412b side distance D 2 is equal to the distance D 2 between the ends of the pair of extending portions 413, 414 on the arc portions 412a, 412b side in the pressurizing step (D 1 -D 2 ) Is zero, and it can be seen that it is smaller than the change amount d 1 of the opening width of the opening 411a.
  • FIGS. 9A to 9C a method of connecting the winding connection portion and the ends of the plurality of windings in the electric motor 1 according to the fifth embodiment of the present invention will be described with reference to FIGS. 9A to 9C.
  • the connection method between the winding connection portion 511 of the first bus ring 51 and the end portions 341 of the plurality of windings 34 will be described below as an example. To do.
  • 9A to 9C show a connection process between the winding connection portion 511 of the first bus ring 51 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the fifth embodiment of the present invention.
  • 9A is a state in which one end 341 of the plurality of windings 34 is inserted into the winding connection part 511
  • FIG. 9B is a state in which the winding connection part 511 is pressurized
  • FIG. 9C is a state in which the winding connection portion 511 and one end portion 341 of the plurality of windings 34 are welded.
  • one end 341 of the plurality of windings 34 is indicated by a broken line.
  • the configuration of the first bus ring 51 is different from the configuration of the first bus ring 41 of the electric motor 1 according to the first to fourth embodiments.
  • the configurations of the second and third bus rings are the same as the configuration of the first bus ring 51.
  • the first bus ring 51 includes a conductive annular member 512 formed concentrically with the stator 3 (see FIG. 2), and a circumferential direction of the annular member 512. And a plurality of terminals 51a provided side by side.
  • FIG. 9A a part of the annular member 512 and one terminal 51a among the plurality of terminals 51a are shown.
  • Each of the plurality of terminals 51 a has a winding connection portion 511 having one end connected to the annular member 512 and the other end connected to one end 341 of the plurality of windings 34.
  • the terminal 51 a includes a winding connection portion 511, a crimping portion 513 crimped to the annular member 512, and first and second extending between the winding connection portion 511 and the crimping portion 513. It has the 2nd extension part 514,515.
  • the first extending portion 514 extends from the crimped portion 513 along the circumferential direction of the annular member 512.
  • the second extending portion 515 is directed from the end opposite to the caulking portion 513 in the extending direction of the first extending portion 514 toward the radial direction of the annular member 512 and the opposite side of the caulking portion 513. It is extended.
  • a winding connection portion 511 is provided at the distal end of the second extending portion 515 in the extending direction.
  • the saddle winding connection portion 511 is formed in an annular shape having an opening 511 a at one location opposite to the second extending portion 515 in the radial direction of the annular member 512.
  • the winding connection portion 511 includes a pair of extending portions 511b and 511c extending in the radial direction of the annular member 512 from the second extending portion 515 side, and a pair of extending portions 511b and 511c. And a distal end of the pair of extending portions 511b and 511c face each other through the opening 511a.
  • one end portions 341 of the plurality of windings 34 are collectively inserted into the winding connection portion 511 in the insertion step.
  • the winding connection portion 411 is sandwiched between the pair of electrodes 11 and 12 so that the opening width of the opening 511 a of the winding connection portion 511 is narrower than the thickness of the winding 34.
  • the pressure is applied in the direction of the arrow in FIG. 9B. In the present embodiment, pressure is applied so that a part of the ends of the pair of extending portions 511b and 511c is in contact.
  • a current is passed through the winding connection portion 511 by the pair of electrodes 11 and 12 while the winding connection portion 511 is pressurized, and the winding connection portion 511 and the plurality of windings One end 341 of 34 is welded and electrically connected.
  • the ends of the pair of extending portions 511b and 511c are melted and welded by energization by the pair of electrodes 11 and 12.
  • FIGS. 10A to 10C a method of connecting the winding connection portion and the ends of the plurality of windings in the electric motor 1 according to the sixth embodiment of the present invention will be described with reference to FIGS. 10A to 10C.
  • the following description will be given by taking as an example a connection method between the winding connection portion 611 of the first bus ring 61 and the end portions 341 of the plurality of windings 34. To do.
  • 10A to 10C show a connection process between the winding connection portion 611 of the first bus ring 61 and one end portion 341 of the plurality of windings 34 in the electric motor 1 according to the sixth embodiment of the present invention.
  • 10A is a state in which one end 341 of the plurality of windings 34 is inserted through the winding connection part 611
  • FIG. 10B is a state in which the winding connection part 611 is pressurized
  • FIG. 10C is a state in which the winding connection portion 611 and one end portion 341 of the plurality of windings 34 are welded.
  • one end 341 of the plurality of windings 34 is indicated by a broken line.
  • the configuration of the terminal 61a of the first bus ring 61 is different from the configuration of the terminal 51a of the first bus ring 51 of the electric motor 1 according to the fifth embodiment.
  • the configuration of the terminals of the second and third bus rings is the same as the configuration of the terminal 61a of the first bus ring 61.
  • the terminal 61a includes a winding connection portion 611, a crimping portion 613 crimped to the annular member 612, and a winding connection portion along the circumferential direction of the annular member 612 from the crimping portion 613. It has the extension part 614 extended between 611 and the crimping part 613.
  • the saddle winding connection portion 611 is formed in an annular shape having an opening 611a at one place on the caulking portion 613 side in the radial direction of the annular member 612.
  • the winding connection portion 611 includes a pair of extending portions 611b and 611c extending in the radial direction of the annular member 612, and a connecting portion 611d that connects the pair of extending portions 611b and 611c on the side opposite to the opening 611a. have.
  • One extending portion 611b of the pair of extending portions 611b and 611c extends from the end opposite to the crimping portion 613 in the extending direction of the extending portion 614 toward the connecting portion 611d side, and the other extending portion The portion 611c extends from the end portion of the connecting portion 611d toward the caulking portion 613 side.
  • stretching direction is bent toward the one extending
  • one end portions 341 of the plurality of windings 34 are inserted into the winding connection portion 611 at a time in the insertion step.
  • the winding connection portion 611 is sandwiched between the pair of electrodes 11 and 12 so that the opening width of the opening 611 a of the winding connection portion 611 is narrower than the thickness of the winding 34.
  • the pressure is applied in the direction of the arrow in FIG. In the present embodiment, pressure is applied so that the tip of the other extending portion 611c is in contact with one extending portion 611b.
  • a current is passed through the winding connection portion 611 by the pair of electrodes 11 and 12 while the winding connection portion 611 is pressurized, and the winding connection portion 611 and the plurality of windings One end 341 of 34 is welded and electrically connected.
  • a stator (3) formed by winding a winding (32/34) around a plurality of magnetic cores (31) arranged in an annular shape, a rotor (2) rotating with respect to the stator (3), A bus ring (first to third bus rings 41 to 43) which is arranged concentrically with the stator (3) and has a winding connection part (411/511/611) to which the winding (32/34) is connected.
  • the line connecting portion (411/511/611) is formed in an annular shape having an opening (411a / 511a / 611a) at one location.
  • the opening width of the opening (411a / 511a / 611a) is wound ( The manufacturing method of the electric motor (1) which pressurizes the coil
  • the first to third bus rings (41 to 43) are formed by bending a conductive member, a plurality of arc portions (412) arranged along the circumferential direction of the stator (3), and a pair of adjacent ones. It has a pair of extending portions (413, 414) interposed between the arc portions (412a, 412b) and both ends sandwiching the opening (411a) of the winding connection portion (411), and a pair of extending portions ( 413, 414) is [1] or [2], in which the amount of change in the distance between the ends on the arc portion (412a, 412b) side in the pressurizing step is smaller than the amount of change in the opening width of the opening (411a).
  • a stator (3) formed by winding a winding (32/34) around a plurality of magnetic cores (31) arranged in an annular shape, a rotor (2) rotating with respect to the stator (3), A bus ring (first to third bus rings 41 to 43) which is arranged concentrically with the stator (3) and has a winding connection part (411/511/611) to which the winding (32/34) is connected.
  • the winding connection portion (411/511/611) is formed in an annular shape having an opening (411a / 511a / 611a) at one location, and the opening width of the opening (411a / 511a / 611a) is the winding (
  • the first to third bus rings (41 to 43) are formed by bending a conductive member, and include a plurality of arc portions (412) arranged along the circumferential direction of the stator (3) and a pair of adjacent ones. It has a pair of extending portions (413, 414) interposed between the arc portions (412a, 412b) and both ends sandwiching the opening (411a) of the winding connection portion (411), and a pair of extending portions ( 413, 414) is the electric motor (1) according to [5] or [6], in which the distance between the end portions on the arc portion (412a, 412b) side is larger than the opening width of the opening (411a).
  • the first to third bus rings (51/61) are formed of a conductive annular member (512/612) formed concentrically with the stator (3), and a circumference of the annular member (512/612). It has a plurality of terminals (51a / 61a) provided side by side along the direction, and one end of each of the plurality of terminals (51a / 61a) is connected to the annular member (512/612), and the other end is wound.
  • the electric motor (1) according to [5] or [6], which includes a connection portion (511/611).
  • the winding connection portion (411/511/611) is inserted in the end portions (341) of the plurality of windings (34), according to any one of [5] to [8]. Electric motor (1).
  • the present invention can be appropriately modified and implemented without departing from the spirit of the present invention.
  • the concentrated winding electric motor has been described.
  • the present invention is not limited to this, and the present invention can also be applied to a distributed winding electric motor.
  • terminal part 41a, 42a, 43a and terminal 51a, 61a protruded in the radial direction of the stator 3, it is not restricted to this,
  • the axial direction of the stator 3 (rotation axis of the shaft 21) It may protrude in a direction parallel to (O direction).
  • SYMBOLS 1 Electric motor 2 ... Rotor 3 ... Stator 31, 31U, 31V, 31W ... Magnetic-material core 32, 32U, 32V, 32W, 34 ... Winding

Abstract

La présente invention porte sur un procédé de fabrication de moteur électrique dans lequel des connexions avec les extrémités de bobines peuvent être réalisées de manière fiable et ainsi l'efficacité de travail peut être améliorée, et porte également sur un moteur électrique. Un moteur électrique (1) comporte : un stator (3) formé en enroulant des bobines (32) autour d'une pluralité de noyaux magnétiques (31) disposés en forme d'anneau ; un rotor (2) tournant par rapport au stator (3) ; et des premier à troisième anneaux de bus (41-43) disposés de façon concentrique avec le stator (3) et ayant des parties de connexion de bobine auxquelles les bobines (32) sont connectées. Un procédé de fabrication pour le moteur électrique (1) possède : une étape d'insertion consistant à insérer les extrémités (321) des bobines (32) dans les parties de connexion de bobine ; une étape de pressurisation consistant à mettre sous pression les parties de connexion de bobine de telle sorte que les parties de connexion de bobine et les extrémités (321) des bobines (32) viennent en contact les unes avec les autres ; et une étape de soudage consistant à exciter les parties de connexion de bobine pendant que les parties de connexion de bobine sont mises sous pression et à souder les parties de connexion de bobine et les extrémités (321) des bobines (32). Dans le procédé de fabrication, les parties de connexion de bobine sont chacune formées en forme d'anneau ayant une ouverture et mises sous pression dans l'étape de pressurisation de telle sorte que la largeur de l'ouverture devient plus étroite que l'épaisseur de fil des bobines (32).
PCT/JP2014/057492 2014-03-19 2014-03-19 Procédé de fabrication de moteur électrique et moteur électrique WO2015140955A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016508391A JP6414204B2 (ja) 2014-03-19 2014-03-19 電動機の製造方法及び電動機
PCT/JP2014/057492 WO2015140955A1 (fr) 2014-03-19 2014-03-19 Procédé de fabrication de moteur électrique et moteur électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/057492 WO2015140955A1 (fr) 2014-03-19 2014-03-19 Procédé de fabrication de moteur électrique et moteur électrique

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005204452A (ja) * 2004-01-16 2005-07-28 Toyota Motor Corp 固定子の製造方法
JP2008029138A (ja) * 2006-07-21 2008-02-07 Showa Corp 回転電機用ターミナル
JP2013102596A (ja) * 2011-11-08 2013-05-23 Mitsuba Corp バスバーユニットおよびブラシレスモータ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005204452A (ja) * 2004-01-16 2005-07-28 Toyota Motor Corp 固定子の製造方法
JP2008029138A (ja) * 2006-07-21 2008-02-07 Showa Corp 回転電機用ターミナル
JP2013102596A (ja) * 2011-11-08 2013-05-23 Mitsuba Corp バスバーユニットおよびブラシレスモータ

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JP6414204B2 (ja) 2018-10-31

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