WO2013179476A1 - Machine électrique tournante, stator pour faire tourner une machine électrique et véhicule - Google Patents

Machine électrique tournante, stator pour faire tourner une machine électrique et véhicule Download PDF

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Publication number
WO2013179476A1
WO2013179476A1 PCT/JP2012/064274 JP2012064274W WO2013179476A1 WO 2013179476 A1 WO2013179476 A1 WO 2013179476A1 JP 2012064274 W JP2012064274 W JP 2012064274W WO 2013179476 A1 WO2013179476 A1 WO 2013179476A1
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WO
WIPO (PCT)
Prior art keywords
coil
stator core
phase coil
electrical machine
rotating electrical
Prior art date
Application number
PCT/JP2012/064274
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English (en)
Japanese (ja)
Inventor
憲正 足立
健治 友原
岳司 井上
前村　明彦
坂本　秀樹
Original Assignee
株式会社安川電機
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 株式会社安川電機 filed Critical 株式会社安川電機
Priority to CN201280073489.4A priority Critical patent/CN104364998B/zh
Priority to PCT/JP2012/064274 priority patent/WO2013179476A1/fr
Priority to JP2014518199A priority patent/JP5910738B2/ja
Publication of WO2013179476A1 publication Critical patent/WO2013179476A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • 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
    • H02K15/0025—Shaping or compacting conductors or winding heads after the installation of the winding in the core or machine ; Applying fastening means on winding heads
    • H02K15/0037—Shaping or compacting winding heads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the present invention relates to a rotating electrical machine, a stator for a rotating electrical machine, and a vehicle, and more particularly, to a rotating electrical machine including a coil mounted by concentric winding, a stator for a rotating electrical machine, and a vehicle.
  • a rotating electric machine including a coil mounted by concentric winding is known.
  • Such a rotating electrical machine is disclosed in, for example, Japanese Patent Application Laid-Open No. 2009-189078.
  • the above Japanese Patent Application Laid-Open No. 2009-189078 discloses a rotating electrical machine including a rotor arranged on the inner peripheral side of a stator and a stator including a plurality of coils.
  • the stator is formed so that both of the coil ends protrude in the axial direction of the stator and the substantially rectangular first coil and both of the coil ends protrude inward in the radial direction of the stator.
  • a third coil formed so that both of the coil ends protrude outward in the radial direction of the stator.
  • the second coil is formed so that both the coil ends protrude radially inward
  • the third coil is both the coil ends. Is formed so as to protrude outward in the radial direction of the stator, and therefore, it is considered that the peripheral length is longer than that of the first coil because the coil protrudes inward or outward in the radial direction. For this reason, since the electrical resistances of the first coil, the second coil, and the third coil are different from each other, there is a problem that pulsation may occur in the rotating electrical machine when the rotor rotates.
  • the present invention has been made to solve the above-described problems, and one object of the present invention is that the electrical resistances of the coils are different while preventing the coils from interfering with each other. It is an object to provide a rotating electrical machine, a rotating electrical machine stator, and a vehicle that can suppress pulsation caused by the above.
  • a rotating electrical machine includes a rotor, a stator core having a plurality of slots, the stator core being disposed so as to face the rotor, and a plurality of coils mounted concentrically on the slots of the stator core.
  • the coil includes a first coil, a second coil, and a third coil that are provided corresponding to each phase of the three-phase alternating current, and the first coil, the second coil, and the third coil are different from each other. It has a shape and is configured to have substantially the same circumference.
  • the first coil, the second coil, and the third coil are configured to be concentrically wound by configuring the first coil, the second coil, and the third coil so as to have mutually different shapes and substantially the same circumference. While mounting the first coil, the second coil, and the third coil in the slot, the first coil, the second coil, and the third coil are electrically connected to each other so that the coil ends of the coils do not interfere with each other. Therefore, the pulsation when the rotating electrical machine rotates can be suppressed while suppressing the first coil, the second coil, and the third coil from interfering with each other.
  • a stator for a rotating electrical machine includes a stator core having a plurality of slots, and a plurality of coils mounted concentrically on the slots of the stator core, and the coils are provided corresponding to each phase of a three-phase alternating current.
  • the first coil, the second coil, and the third coil are configured such that the first coil, the second coil, and the third coil have different shapes and have substantially the same circumferential length. Yes.
  • the first coil, the second coil, and the third coil are configured so as to have different shapes and substantially the same circumferential length, thereby being concentric.
  • the shapes of the first coil, the second coil, and the third coil are made different from each other so that the coil ends of the coils do not interfere with each other. Since electrical resistance can be made substantially the same, it is possible to suppress pulsation when the rotating electrical machine rotates while suppressing interference between the first coil, the second coil, and the third coil.
  • a stator for a rotating electric machine can be provided.
  • a vehicle is a vehicle including a rotating electrical machine, and the rotating electrical machine is provided with a rotor, a plurality of slots, a stator core disposed so as to face the rotor, and concentrically wound around the slots of the stator core.
  • a stator having a plurality of mounted coils, the coil including a first coil, a second coil, and a third coil provided corresponding to each phase of the three-phase alternating current, the first coil
  • the second coil and the third coil have different shapes and are configured to have substantially the same circumference.
  • the first coil, the second coil, and the third coil are concentrically wound by configuring the first coil, the second coil, and the third coil so as to have mutually different shapes and substantially the same circumference. While mounting the 1 coil, the 2nd coil, and the 3rd coil in the slot, while making the shape different from each other so that the coil ends of each coil do not interfere, the electrical of the 1st coil, the 2nd coil, and the 3rd coil Since the resistances can be made substantially the same, a vehicle capable of suppressing pulsation when the rotating electrical machine rotates while suppressing interference between the first coil, the second coil, and the third coil. Can be provided.
  • the rotating electrical machine the stator for the rotating electrical machine, and the vehicle, it is possible to suppress pulsation caused by different electrical resistances of the coils while suppressing the interference of the coils with each other.
  • FIG. 1 planarly, and seeing from the radial direction outer side. It is a schematic diagram for demonstrating the structure of the coil of each phase of the electric motor shown in FIG. It is the perspective view which showed typically the whole structure of the electric motor by 2nd Embodiment. It is the top view which looked at the electric motor shown in FIG. 9 from the axial direction (above). It is the bottom view which looked at the electric motor shown in FIG. 9 from the axial direction (downward). It is the perspective view which showed the U-phase coil of the electric motor by 2nd Embodiment. It is the perspective view which showed the V phase coil of the electric motor by 2nd Embodiment. It is the perspective view which showed the W phase coil of the electric motor by 2nd Embodiment.
  • the electric motor 100 includes a stator 1 that is a fixed portion and a rotor 2 that is a rotating portion (refer to a one-dot chain line).
  • the rotor 2 includes a shaft 21 (see an alternate long and short dash line), a rotor core 22 (see an alternate long and short dash line), and a plurality of permanent magnets (not shown), and is rotatable around the shaft 21.
  • the stator 1 is an example of a “rotor electric machine stator”.
  • the stator 1 includes a stator core 1a having a plurality of slots 11 and a plurality of coils 1b mounted in the slots.
  • the stator core 1a is formed in a cylindrical shape, and has a plurality of teeth 12 extending inward in the radial direction B on the inner peripheral side.
  • the teeth 12 are provided at equiangular intervals along the circumferential direction C of the stator core 1 a, and a portion between the teeth 12 is a slot 11.
  • the electric motor 100 is a three-phase AC rotating electric machine in which a three-phase coil is concentrically wound in a distributed winding and mounted in each slot 11.
  • the plurality of coils 1b are composed of three types of coils, a U-phase coil 30, a V-phase coil 40, and a W-phase coil 50, corresponding to each phase of the three-phase alternating current.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 have shapes different from each other and have substantially the same circumferential length. It is configured. Details of the shape of each coil will be described later.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are examples of “first coil”, “second coil”, and “third coil”, respectively.
  • each coil 1b occupies two different slots 11 at intervals (four slots in FIG. 7), and two adjacent coils 1b of other phases are arranged in the slot 11 between one side at a time. Therefore, each coil 1b is arranged in two slots in the order of the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 from the right side in FIG.
  • each coil 1b is a flat strip-shaped edgewise coil in which flat conductor wires are wound and stacked.
  • the flat conducting wire has a substantially rectangular cross section having a width W1 and a thickness t1 (W1> t1) in the cross section.
  • the flat conducting wires are stacked in a row in the thickness direction in the slot 11.
  • the coil 1b has the laminated surface f formed by laminating
  • the lamination width W2 of the lamination surface f is substantially equal to the thickness t1 of the flat conductor wire ⁇ the number of laminations, and the width of the end face e (the thickness of the coil 1b) is equal to the width W1 of the flat conductor wire.
  • each coil 1b arranged in the slot 11 has a portion (coil end) that protrudes (exposes) in the axial direction from both ends in the axial direction A of the stator core 1a (slot 11).
  • the axial direction A of the cylindrical stator core 1a is referred to as “axial direction”
  • the radial direction B of the stator core 1a is referred to as “radial direction”
  • the circumferential direction C of the stator core 1a is referred to as “circumferential direction”.
  • the U-phase coil 30 includes a pair of coil side portions 31 inserted into different slots 11 and one side in the axial direction of the stator core 1 a at the coil end (arrow A1 direction side).
  • the pair of bent portions 32 that are continuous from the pair of coil side portions 31 and the connecting portion 33 that connects the pair of bent portions 32 are provided.
  • the coil side portion 31 is an example of an “axial portion”.
  • the connecting portion 33 is an example of a “first connecting portion”.
  • the pair of bent portions 32 have the same shape. Specifically, the bent portion 32 is formed by folding a coil side portion 31 protruding in the axial direction from the slot 11 into a substantially U shape radially outward at the coil end (see FIG. 1). As shown in FIG. 7, the protrusion height (maximum height) from the core end surface 1c of the bent portion 32 is H1. Further, the bent portion 32 has a front end surface 32a (see FIG. 7) of the bent portion 32 at a distance D1 (D1 ⁇ H1) in the vicinity of the axial end surface (hereinafter referred to as the core end surface 1c) of the stator core 1a. The stator core 1a is formed to face the stator core 1a.
  • the connecting portion 33 is formed so as to extend in the circumferential direction, and connects the tip portions of the bent portion 32 in the vicinity of the core end surface 1c.
  • the connecting portion 33 is arranged so that the laminated surface f of the edgewise coil faces the core end surface 1c and is substantially parallel to the core end surface 1c.
  • the coil end of the U-phase coil 30 is formed in a shape having a concave portion 34 that is opened in the axial direction and includes a pair of bent portions 32 and a connecting portion 33 when viewed from the radial direction.
  • a part of a coil end of another coil (W-phase coil 50) is arranged inside the concave portion 34.
  • the U-phase coil 30 is substantially L-shaped radially inward at the coil end on the other axial side (arrow A2 direction side) of the stator core 1a. It includes a pair of bent portions 35 that are bent, and a connecting portion 36 that connects the pair of bent portions 35 to each other.
  • U-phase coil 30 is bent in the radial direction of stator core 1a along the lamination direction of the rectangular conductive wires so as to have a shape different from that of V-phase coil 40 and W-phase coil 50.
  • the U-phase coil 30 is bent radially inward at the coil end on the other axial side (arrow A2 direction side) of the stator core 1a, and extends in the axial direction of the stator core 1a along the axial direction of the stator core 1a. It is configured to be insertable into the slot 11 from the coil end side on the other side (arrow A2 direction side).
  • the protruding amount L1 of the bent portion 35 to the inner side in the radial direction of the stator core 1a is the protruding amount L2 (see FIG. 5) of the bent portion 43 of the V-phase coil 40 to be described later to the inner side in the radial direction.
  • L3 see FIG. 6
  • the protruding amount is the length from the radially outer end of the bent portion 35 to the inner end.
  • the connecting portion 36 is formed so as to extend along the circumferential direction.
  • the circumferential length L4 of the connecting portion 36 is the circumferential length L5 (see FIG. 5) of the connecting portion 44 of the V-phase coil 40 described later and the connecting portion of the W-phase coil 50. It is the largest compared with the circumferential length L6 of 55 (see FIG. 6).
  • the connecting portion 36 is disposed such that the end face e of the edgewise coil faces the axial direction and faces the end face in the axial direction of the rotor 2.
  • the connecting portion 36 is an example of a “second connecting portion”.
  • the V-phase coil 40 directly connects the tips of a pair of coil side portions 41 protruding in the axial direction from the slot 11 on one side of the coil end (arrow A1 direction side).
  • the connecting part 42 is included.
  • the connecting portion 42 is formed to extend along the circumferential direction across the bent portion 32 of the U-phase coil 30 and the bent portion 52 of the W-phase coil 50 described later.
  • the connecting portion 42 is disposed such that the laminated surface f of the edgewise coil faces the axial direction and faces the axial end surface of the rotor 2.
  • the protruding height of the connecting portion 42 from the core end surface 1c is H2 (see FIG. 7).
  • the coil side portion 41 is an example of an “axial portion”.
  • the connecting portion 42 is an example of a “first connecting portion”.
  • the V-phase coil 40 includes a pair of substantially S-shaped bent portions 43 and tip ends of the pair of bent portions 43 on the other side (arrow A2 direction side) of the coil end. And a connecting portion 44 to be connected.
  • V-phase coil 40 is bent in the radial direction of stator core 1a along the lamination direction of the rectangular conductive wires so as to have a shape different from that of U-phase coil 30 and W-phase coil 50.
  • the V-phase coil 40 is bent radially inward at the coil end on the other axial side (arrow A2 direction side) of the stator core 1a, and extends in the axial direction of the stator core 1a along the axial direction of the stator core 1a.
  • the protruding amount L2 of the bent portion 43 toward the inner side in the radial direction of the stator core 1a is the protruding amount L1 of the bent portion 35 of the U-phase coil 30 toward the inner side in the radial direction (see FIG. 4).
  • the amount of protrusion L3 (see FIG. 6) inward in the radial direction of the bent portion 54 of the coil 50 is the largest.
  • the bent portion 43 is formed so as to pass through the inner side in the axial direction of the connecting portion 36 of the U-phase coil 30 so as not to contact the connecting portion 36, and the axial direction of the bent portion 54 of the W-phase coil 50. It is formed so as to pass through the inside so as not to contact the connecting portion 55 (see FIG. 6).
  • the connecting portion 44 is an example of a “second connecting portion”.
  • the circumferential length L5 of the connecting portion 44 is equal to the circumferential length L4 (see FIG. 4) of the connecting portion 36 of the U-phase coil 30 and the connecting portion of the W-phase coil 50 described later. It is the smallest compared with the circumferential length L6 of 55 (see FIG. 6). Further, the connecting portion 44 is disposed such that the laminated surface f of the edgewise coil faces the axial direction and faces the axial end surface of the rotor 2.
  • the W-phase coil 50 is continuous from a pair of coil side portions 51 on one side (arrow A1 direction side) of the coil end, and is bent into a substantially S shape radially outward.
  • the pair of bent portions 52 and a connecting portion 53 that connects the pair of bent portions 52 are provided.
  • the bending part 52 is arrange
  • the bent portion 52 is disposed in the concave portion 34 of the U-phase coil 30.
  • Connecting portion 53 is formed so as to extend along the circumferential direction, and is arranged to overlap with connecting portion 33 of U-phase coil 30 in the axial direction.
  • the connecting portion 53 is disposed so that the laminated surface f of the edgewise coil faces the axial direction and faces the axial end surface of the rotor 2.
  • the protrusion height from the core end surface 1c of the connection part 53 is H2 (refer FIG. 7). Therefore, at one coil end, the connecting portion 53 of the W-phase coil 50 and the connecting portion 42 of the V-phase coil 40 are arranged so as to be aligned along the radial direction (see FIG. 2).
  • the coil side 51 is an example of an “axial portion”.
  • the connecting portion 53 is an example of a “first connecting portion”.
  • the W-phase coil 50 includes a pair of bent portions 54 that are bent in a substantially S shape radially inward on the other side (arrow A2 direction side) of the coil end, and a pair of folded portions. It includes a connecting portion 55 that connects the curved portion 54.
  • W-phase coil 50 is bent in the radial direction of stator core 1a along the laminating direction of the rectangular conductive wire so as to have a shape different from that of U-phase coil 30 and V-phase coil 40.
  • W-phase coil 50 is bent radially inward at the coil end on the other side (arrow A2 direction side) of stator core 1a in the axial direction, and in the axial direction of stator core 1a along the axial direction of stator core 1a.
  • the protruding amount L3 of the bent portion 54 toward the radially inner side of the stator core 1a is larger than the bent portion 35 (see FIG. 4) of the U-phase coil 30, and the bent portion 43 (see FIG. 5) of the V-phase coil 40. Smaller than see). That is, as shown in FIG. 3, the connecting portion 36 of the U-phase coil 30, the connecting portion 55 of the W-phase coil 50, and the connecting portion 44 of the V-phase coil 40 are viewed from the outside in the radial direction. They are arranged in this order toward the inside.
  • the connecting portion 55 is an example of a “second connecting portion”.
  • the bent portion 54 is formed so as to pass through the inner side in the axial direction of the connecting portion 36 of the U-phase coil 30 so as not to contact the connecting portion 36.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are not in contact at the coil end on the other side in the axial direction of the stator core 1a.
  • the connecting portion 55 is formed so as to extend along the circumferential direction.
  • the circumferential length L6 of the connecting portion 55 is smaller than the circumferential length L4 (see FIG. 4) of the connecting portion 36 of the U-phase coil 30, and the V-phase coil 40 is connected. It is larger than the circumferential length L5 of the portion 44 (see FIG. 5).
  • the connecting portion 55 is disposed such that the laminated surface f of the edgewise coil faces the axial direction and faces the end surface in the axial direction of the rotor 2.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are bent inward in the radial direction of the stator core 1a at the other coil end in the axial direction of the stator core 1a. At the coil end on one side, it extends along the axial direction of the stator core 1a like the V-phase coil 40, or is bent outward in the radial direction of the stator core like the U-phase coil 30 and the W-phase coil 50. ing.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are configured to have mutually different shapes and substantially the same circumference. Specifically, first, the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are folded inward in the radial direction at the coil end on the other axial side of the stator core 1 a (arrow A2 direction side).
  • the circumferential lengths L1, L2, and L3 of the curved portions 35, 43, and 54 are different from each other so that the circumferential lengths are substantially the same.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are arranged at the coil end on the other axial side of the stator core 1a in addition to the protruding amounts L1, L2, and L3.
  • 40 and the shape of the bent portion of the W-phase coil 50 (the bent portion 35 of the U-phase coil 30 is L-shaped, the bent portion 43 of the V-phase coil 40 is S-shaped, and the bent portion 54 of the W-phase coil 50 is Are different from each other in S shape, so that the circumferences are substantially the same.
  • the U-phase coil 30, the V-phase coil 40 and the W-phase coil 50 are respectively connected to the stator core 1 a of the connecting portion 36, the connecting portion 44 and the connecting portion 55 of the U-phase coil 30, the V-phase coil 40 and the W-phase coil 50.
  • the circumferential lengths (L4, L5 and L6) are made substantially the same.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are configured to have different shapes and substantially the same circumference. Accordingly, when the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are mounted concentrically on the slot 11, the U-phase coil 30 is made different in shape so that the coil ends of the coils do not interfere with each other. Since the electrical resistances of the V-phase coil 40 and the W-phase coil 50 can be made substantially the same, while suppressing the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 from interfering with each other, The pulsation when the electric motor 100 rotates can be suppressed.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 have substantially the same circumference by making the coil end shapes different from each other. Constitute. Thereby, unlike the case where the shape of the coil end of U phase coil 30, V phase coil 40, and W phase coil 50 is mutually the same, the length of a coil end can be adjusted easily.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are made to have different shapes by making the coil ends bend different from each other, so that The length is configured to be substantially the same. Thereby, since the length of a coil end is easily adjusted by making the bending state of a coil end different from each other, it is possible to make the circumferential lengths of each other almost the same.
  • At least two of the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are connected to the shaft of the stator core 1a.
  • the stator core 1a is bent outward in the radial direction, and at least two of the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 (the U-phase coil 30 and the W-phase coil 50). ) Are overlapped along the axial direction.
  • the connecting portion 33, the connecting portion 42, and the connecting portion 53 of the U-phase coil 30 are shifted in the radial direction without overlapping, the radial direction of the electric motor 100 is increased. An increase in length can be suppressed.
  • the coil is constituted by a band-shaped edgewise coil in which flat conductor wires are wound and laminated, and the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are at least At the other coil end in the axial direction of the stator core 1a, the stator core 1a is bent so as to have different shapes in the radial direction (radial direction) of the stator core 1a along the lamination direction of the rectangular conductive wires.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 which are edgewise coils, can be easily bent in the radial direction.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are bent inward in the radial direction of the stator core 1a at the other coil end in the axial direction of the stator core 1a.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are It can be inserted into the slot 11 from the other coil end side in the axial direction of the stator core 1a along the axial direction of the stator core 1a.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are arranged inside the stator core 1 a in the radial direction at the coil end on the other axial side of the stator core 1 a. It is configured such that it can be bent and inserted into the slot 11 from the coil end side on the other side in the axial direction of the stator core 1a along the axial direction of the stator core 1a. Thereby, unlike the case where the coil is moved from the radially inner side to the outer side and inserted into the slot 11, the assembly work of the electric motor 100 can be easily performed.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are arranged at least on the radially inner side of the stator core 1a at the other coil end in the axial direction of the stator core 1a.
  • the circumferential lengths of the bent portion 35, the bent portion 43, and the bent portion 54 that are bent inward are made to be substantially the same by making the protrusion amounts of the stator core 1a inward in the radial direction different from each other.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are added to the U-phase in addition to the protruding amount at the other coil end in the axial direction of the stator core 1 a.
  • the circumferential lengths are made substantially the same.
  • the peripheral lengths of the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are made substantially the same depending on only the amount of protrusion on the radially inner side, such as an electric motor having a relatively small radial size.
  • the bent portion 35, the bent portion 43, and the bent portion 35 at the coil end on the other side in the axial direction of the stator core 1a of the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 The bent portion 54 is configured to have at least one of a substantially U shape, a substantially L shape, and a substantially S shape. Thereby, the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 can be easily bent radially inward at the other coil end in the axial direction.
  • the bent portion 35 of the U-phase coil 30 has a substantially L shape, and the amount of protrusion of the stator core 1a in the radial direction is minimized, so that the V-phase
  • the bent portion 43 of the coil 40 has a substantially S shape, and the amount of protrusion of the stator core 1a in the radial direction is maximized, and the bent portion 54 of the W-phase coil 50 has a substantially S shape.
  • the amount of protrusion of the stator core 1 a inward in the radial direction is larger than the bent portion 35 of the U-phase coil 30 and smaller than the bent portion 43 of the V-phase coil 40.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are connected to the connecting portions 36 of the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50,
  • the circumferential lengths of the stator core 1a of the connecting portion 44 and the connecting portion 55 are made different from each other so that the circumferential lengths are substantially the same.
  • the connecting portion 36, the connecting portion 44, and the connecting portion 55 of the stator core 1a of the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are further provided.
  • the connecting portion 36, the connecting portion 44, and the connecting portion 55 of the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are divided into the wide laminated surface f and the laminated surface. It is configured to have a narrow end surface orthogonal to f, and the stacked surface f or the end surface e is configured to face the axial direction of the stator core 1a.
  • the axial direction edge part of the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 can be made into a flat surface (lamination surface f or end surface e), the U-phase coil 30, the V-phase coil 40 Further, it is possible to suppress the colliding object from being damaged due to the collision with the axial end of the W-phase coil 50.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are bent inward in the radial direction of the stator core 1a at the other coil end in the axial direction of the stator core 1a.
  • the coil end on one side extends along the axial direction of the stator core 1a or bends outward in the radial direction of the stator core 1a.
  • the rotor 2 can be easily connected to the stator core 1a. Can be inserted inside.
  • the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 intersect with each other without contacting at the coil end on the other axial side of the stator core 1 a. To place. Thereby, the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are prevented from being short-circuited due to the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 being in contact with each other. Can do.
  • the configuration of the electric motor 200 according to the second embodiment will be described with reference to FIGS.
  • the U-phase coil 130 unlike the first embodiment in which the connecting portion 42 of the V-phase coil 40 and the connecting portion 53 of the W-phase coil 50 are arranged along the radial direction, the U-phase coil 130.
  • An example in which the connecting portion 33, the connecting portion 144 of the V-phase coil 140, and the connecting portion 53 of the W-phase coil 150 are arranged in the axial direction will be described.
  • the electric motor 200 is an example of a “rotary electric machine”.
  • the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
  • the stator 101 includes a plurality of coils 101b (a U-phase coil 130, a V-phase coil 140, and a W-phase coil 150).
  • the U-phase coil 130, the V-phase coil 140, and the W-phase coil 150 are examples of “first coil”, “second coil”, and “third coil”, respectively.
  • the stator 101 is an example of a “rotor electric machine stator”.
  • the U-phase coil 130 of the second embodiment has the same shape as the U-phase coil 30 of the first embodiment at the coil end on one side (arrow A1 direction side). .
  • the U-phase coil 130 connects the pair of bent portions 131 and the pair of bent portions 131 to each other at the coil end on the other side (arrow A2 direction side).
  • the front end surface 131a of the bent portion 131 is formed to face outward in the axial direction, and the protruding height of the front end surface 131a of the bent portion 131 from the core end surface 1c is H11.
  • a protruding amount L7 of the bent portion 131 to the radially inner side of the stator core 1a is a protruding amount L8 of the bent portion 145 (folded portion 146) of the V-phase coil 140 described later to the radially inner side (see FIG. 13).
  • the connecting portion 132 is an example of a “second connecting portion”.
  • the connecting portion 132 is formed so as to extend along the circumferential direction, and is formed so that the laminated surface f of the edgewise coil is opposed to the axial end surface of the rotor 2 and is substantially parallel. Further, the connecting portion 132 is disposed on the radially inner side of the stator core 1a so as not to overlap the stator core 1a in the axial direction.
  • the circumferential length L10 of the connecting portion 132 is larger than the circumferential length L11 (see FIG. 13) of the connecting portion 145 of the V-phase coil 140, which will be described later, and the W-phase coil 150.
  • the connecting portion 151 is smaller than the circumferential length L12 (see FIG. 14).
  • the pair of bent portions 131 and the connecting portion 132 form a concave portion 133 whose inner side in the axial direction is open.
  • the V-phase coil 140 has a pair of coil sides 141 that extend in the axial direction and are inserted into different slots 11.
  • the V-phase coil 140 includes, at the coil end, a bent portion 142 that is continuous from one coil side portion 141, a bent portion 143 that is continuous from the other coil side portion 141, a bent portion 142, and a bent portion.
  • a connecting portion 144 for connecting 143 is an example of an “axial portion”.
  • the connecting portion 144 is an example of a “first connecting portion”.
  • the bent portion 142 is radially outward, and the distal end surface 142a of the bent portion 142 is folded back toward the connecting portion 33 side (core end surface 1c side) of the U-phase coil 130. It has a substantially U shape similar to that of the bent portion 32.
  • the protruding height of the bent portion 142 is H13, and the protruding height of the bent portion 32 is larger than H12 (see FIG. 12).
  • the front end surface 142 a of the bent portion 142 is disposed inside the concave portion 34 formed by the pair of bent portions 32 of the U-phase coil 130 and the connecting portion 33 and at a position near the connecting portion 33. Yes.
  • the bent portion 143 is such that the coil side portion 141 protruding in the axial direction from the slot 11 is radially outward at the coil end, and the distal end surface 143a of the bent portion 143 is opposite to the connecting portion 33 of the U-phase coil 130. It is bent toward (outside in the axial direction) and has a substantially S shape. Specifically, the bent portion 143 is formed into a substantially S-shape by being folded outward at approximately 90 degrees along the stacking direction (radial direction) of the flat wire, and then internally folded at approximately 90 degrees. Has been. The front end surface 143a of the bent portion 143 faces the opposite side (axially outer side) from the core end surface 1c.
  • bent portion 143 is arranged inside concave portion 34 of U-phase coil 130 (adjacent U-phase coil 130) different from bent portion 142.
  • the connecting portion 144 connects the distal end portion of the bent portion 142 facing the core end surface 1c side (connecting portion 33 side) and the distal end portion of the bent portion 143 facing the opposite side of the core end surface 1c. Is formed. Further, in the second embodiment, the connecting portion 144 is a convex second portion straddling the concave first portion 144a whose outer side in the axial direction is opened and the bent portion 32 of the U-phase coil 130 when viewed from the radial direction. It has a stepped shape including the portion 144b. The concave first portion 144 a is arranged in the vicinity of the coupling portion 33 in the concave portion 34 of the U-phase coil 130 by coupling with the distal end portion of the bent portion 142.
  • the convex second portion 144b is formed so as to straddle the bent portion 32 of the U-phase coil 130 from the outside in the axial direction by being connected to the distal end portion of the bent portion 143.
  • the first portion 144a and the second portion 144b are arranged so that the laminated surface f of the edgewise coil faces the core end surface 1c, is substantially parallel to the core end surface 1c, and extends in the circumferential direction, except for the central step portion. Is formed.
  • the connecting portion 144 is disposed so as to overlap the connecting portion 33 of the U-phase coil 130 in the axial direction.
  • the V-phase coil 140 has a bent portion 145 that is bent in a substantially S shape radially inward and a substantially U shape radially inward at the coil end on the other side.
  • the folded portion 146 that is folded back, and the connecting portion 147 that connects the distal end portion of the bent portion 145 and the distal end portion of the bent portion 146 are included.
  • a substantially U-shaped bent portion 146 is formed on the opposite side (the other side) of the substantially S-shaped bent portion 143 in the coil end on one side.
  • a substantially S-shaped bent portion 145 is formed on the opposite side (the other side) of the substantially U-shaped bent portion 142 in the coil end on one side.
  • the protruding amount L8 of the bent portion 145 (the bent portion 146) to the radially inner side of the stator core 1a is the protruding amount L7 of the bent portion 131 of the U-phase coil 130 to the radially inner side. (See FIG. 12) and the amount of protrusion L9 (see FIG. 14) inward in the radial direction of the bent portion 151 of the W-phase coil 150 to be described later is the smallest.
  • the connecting portion 147 is an example of a “second connecting portion”.
  • the connecting portion 147 has a stepped shape including a concave first portion 147a whose inner side in the axial direction is opened and a convex second portion 147b whose outer side in the axial direction is opened as viewed from the radial direction.
  • the first portion 147a and the second portion 147b are formed so as to extend along the circumferential direction, except for the step portion at the center, the laminated surface f of the edgewise coil is opposed to the axial end surface of the rotor 2, and substantially It is formed to be parallel.
  • the circumferential length L11 of the connecting portion 147 of the V-phase coil 140 is the circumferential length L10 of the connecting portion 132 of the U-phase coil 130 (see FIG. 12), and will be described later.
  • connection part 147 is arrange
  • bent portion 131 of the U-phase coil 130 is disposed in the concave first portion 147a.
  • the W-phase coil 150 has the same shape as the W-phase coil 50 of the first embodiment at the coil end on one side (arrow A1 direction side).
  • the W-phase coil 150 has a pair of bent portions 151 that are bent in a substantially L shape radially inward at the coil end on the other side (arrow A2 direction side), and tip portions of the pair of bent portions 151.
  • the connecting portion 152 is an example of a “second connecting portion”.
  • the pair of bent portions 151 extend linearly inward in the radial direction and are disposed so as to fit inside the concave first portion 147a of the V-phase coil 140 (inward in the axial direction). Further, the bent portion 151 is disposed so as to be accommodated inside the concave portion 133 (the inner side in the axial direction) of the U-phase coil 130. Further, the bent portion 151 passes through the inner side in the axial direction of the connecting portion 132 of the U-phase coil 130 and extends further inward in the radial direction than the connecting portion 147 of the V-phase coil 140 and the connecting portion 132 of the U-phase coil 130.
  • the protrusion amount L9 to the radial inside of the stator core 1a of the bending part 151 is the protrusion amount L7 (refer FIG. 12) to the radial inside of the bending part 131 of the U-phase coil 130, And it is the largest compared with the protrusion amount L8 (refer FIG. 13) to the radial inside of the bending part 145 (bending part 146) of the V-phase coil 140.
  • the connecting portion 152 is formed so as to extend along the circumferential direction, and is disposed at a position radially inward of the connecting portion 147 of the V-phase coil 140 and the connecting portion 132 of the U-phase coil 130. That is, as shown in FIG. 11, when viewed from the axial direction, the connecting portion 147 of the V-phase coil 140, the connecting portion 132 of the U-phase coil 130, and the connecting portion 152 of the W-phase coil 150 are from the radially outer side. They are arranged in this order toward the inside. As shown in FIG. 14, the connecting portion 152 is formed so that the end face e of the edgewise coil faces the axial direction, faces the axial end face of the rotor 2, and is substantially parallel.
  • the connecting portion 152 is disposed on the radially inner side of the stator core 1a so as not to overlap the stator core 1a in the axial direction.
  • the circumferential length L12 of the connecting portion 152 of the W-phase coil 150 is equal to the circumferential length L10 of the connecting portion 132 of the U-phase coil 130 (see FIG. 12) and the V-phase. Compared to the circumferential length L11 of the coupling portion 147 of the coil 140 (see FIG. 13), it is the smallest.
  • the maximum protrusion height at the coil end on the other end side of the stator 101 of the second embodiment is the protrusion height H11 of the tip surface 131a of the bent portion 131 of the U-phase coil 130. Therefore, the coil ends of the respective phases are arranged so as to be located on the inner side in the axial direction from the concave portion 133 of the U-phase coil 130 having the protruding height H11.
  • the U-phase coil 130, the V-phase coil 140, and the W-phase coil 150 have shapes different from each other and have circumferential lengths. It is comprised so that it may become substantially the same.
  • the U-phase coil 130, the V-phase coil 140, and the W-phase coil 150 are bent portions that are bent radially inward at the other coil end (arrow A2 direction side) in the axial direction of the stator core 1a.
  • the 131, 145 (146) and 151 projecting amounts L7, L8 and L9 inward in the radial direction are made different from each other, and the shape of the bent portion (the bent portion 131 of the U-phase coil 130 is S-shaped, and the V-phase coil 140 is The bent portion 145 is S-shaped, the bent portion 146 is U-shaped, and the bent portion 151 of the W-phase coil 150 is L-shaped). Further, the connecting portion 132, the connecting portion 147, and the connecting portion The circumferential lengths (L10, L11, and L12) of the stator core 1a of 152 are made different from each other so that the circumferential lengths are substantially the same.
  • the connecting portion 147 of the V-phase coil 140 is configured to include the concave first portion 147a and the convex second portion 147b, and the convex shape of the V-phase coil 140 is formed.
  • the second portion 147b of the U-phase coil 130 is disposed so as to straddle the second portion 147b. Thereby, the bending part 131 of the U-phase coil 130 can be protruded radially inward without the U-phase coil 130 and the V-phase coil 140 colliding with each other.
  • the configuration of the electric motor 300 according to the third embodiment will be described with reference to FIGS.
  • the first and second embodiments are configured such that the coil ends at both ends are asymmetrical (one is bent radially outward and the other is bent radially inner). Unlike the above, an example will be described in which the coil ends at both ends have substantially the same shape (substantially symmetrical shape).
  • the electric motor 300 is an example of a “rotary electric machine”.
  • the same components as those in the first and second embodiments are denoted by the same reference numerals and description thereof is omitted.
  • the stator 201 includes a plurality of coils 201b (a U-phase coil 230, a V-phase coil 240, and a W-phase coil 250).
  • the U-phase coil 230, the V-phase coil 240, and the W-phase coil 250 are examples of “first coil”, “second coil”, and “third coil”, respectively.
  • the stator 201 is an example of a “rotor electric machine stator”.
  • the U-phase coil 230 is substantially L connected to a pair of coil side portions 231 on one side (arrow A1 direction side) and the other side (arrow A2 direction side) of the coil end.
  • a pair of bent portions 232 having a letter shape and a connecting portion 233 for connecting the tip portions of the pair of bent portions 232 are included.
  • the connecting portion 232 is formed so that the end face e of the edgewise coil faces the core end face 1c.
  • connecting portion 233 is arranged radially outside of connecting portion 244 of V-phase coil 240 and connecting portion 253 of W-phase coil 250 described later.
  • the coil side portion 231 is an example of an “axial portion”.
  • the connecting portion 233 is an example of a “first connecting portion”.
  • the V-phase coil 240 is radially connected to one of the coil side portions 241 on one side (arrow A1 direction side) and the other side (arrow A2 direction side) of the coil end.
  • a bent portion 242 bent in a substantially S shape on the outer side, a bent portion 243 folded back in a substantially U shape on the radially outer side, a distal end portion of the bent portion 242 and a distal end portion of the bent portion 243
  • a connecting portion 244 to be connected.
  • the connecting portion 244 has a stepped shape including a concave first portion 245 that is open on the outer side in the axial direction and a convex second portion 246 that is open on the inner side in the axial direction when viewed from the radial direction.
  • the first portion 245 and the second portion 246 are formed so as to extend along the circumferential direction, except for the step portion at the center, the laminated surface f of the edgewise coil is opposed to the axial end surface of the rotor 2, and substantially It is formed to be parallel.
  • the convex second portion 246 of the V-phase coil 240 is arranged so as to straddle the bent portion 232 of the U-phase coil 230.
  • a bent portion 252 of the W-phase coil 250 to be described later is arranged so as to straddle the concave first portion 245 of the V-phase coil 240.
  • the coil side 241 is an example of an “axial portion”.
  • the connecting portion 244 is an example of a “first connecting portion”.
  • the W-phase coil 250 is continuous from the pair of coil side portions 251 on one side (arrow A1 direction side) and the other side (arrow A2 direction side) of the coil end. It has a pair of bending part 252 bent by the substantially S shape outside, and the connection part 253 which connects a pair of bending part 252.
  • the connecting portion 253 of the W-phase coil 250 and the connecting portion 244 of the V-phase coil 240 are spaced apart from each other in the axial direction. It is arranged to overlap along.
  • the coil side 251 is an example of an “axial portion”.
  • the connecting portion 253 is an example of a “first connecting portion”.
  • the U-phase coil 230, the V-phase coil 240, and the W-phase coil 250 have shapes different from each other and have circumferential lengths. It is comprised so that it may become substantially the same.
  • U-phase coil 230, V-phase coil 240, and W-phase coil 250 have a protruding amount L 13 of the bent portion 232 of U-phase coil 230 protruding outward in the radial direction of stator core 1 a and a concave shape of V-phase coil 240.
  • the circumferential lengths are substantially the same.
  • the effect of the third embodiment is the same as that of the first and second embodiments.
  • the coil shape of each phase is arbitrary, and can be applied to any of the coil shapes shown in the first to third embodiments. Therefore, here, an example in which the configuration of the fourth embodiment is applied to the coils of the first embodiment (the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50) will be described.
  • the coils 401b composed of the U-phase coil 30, the V-phase coil 40, and the W-phase coil 50 are respectively connected to the low-speed coil section 460 and the low-speed coil section.
  • a coil portion 470 Specifically, in each coil 401 b, a part of the laminated rectangular conductor wire constitutes a low-speed coil part 460 and the other part constitutes a low-speed coil part 470.
  • the low-speed coil portion 460 and the low-speed coil portion 470 are separated from each other by an insulating member 480.
  • each coil 401 b is configured such that the low-speed coil portion 460 and the low-speed coil portion 470 are arranged in the common slot 11.
  • the stator 401 is an example of a “rotor electric machine stator”.
  • the low speed / high speed coil section 460 of each coil 401b is used both when the electric motor 400 is driven at low speed and during high speed driving, and the low speed coil section 470 is configured to be used only when the electric motor 400 is driven at low speed. Yes.
  • These low-speed coil section 460 and low-speed coil section 470 can be switched in a connection state by a winding switching section CS as shown in FIG.
  • the electric motor 400 is connected to the power supply unit BU and the winding switching unit CS, respectively.
  • the electric motor 400 is configured to be driven in response to three-phase AC power supplied from the power supply unit BU.
  • the low speed coil section 460 and the low speed coil section 470 of each coil 401b are electrically connected in series.
  • Terminals TU1, TV1, and TW1 on one side of the low-speed coil unit 460 are connected to the power supply unit BU.
  • terminals TU2, TV2 and TW2 on the other side of the low-speed coil unit 460 and on one side of the low-speed coil unit 470 are connected to the winding switching unit CS.
  • the terminals TU3, TV3, and TW3 on the other side of the low speed coil unit 470 are connected to the winding switching unit CS.
  • Winding switching unit CS includes a high-speed switch SW1 for short-circuiting terminals TU2, TV2 and TW2 of electric motor 400 and a low-speed switch SW2 for short-circuiting terminals TU3, TV3 and TW3 of electric motor 400.
  • the winding switching unit CS turns off the high-speed switch SW1 and turns on the low-speed switch SW2 during low-speed driving.
  • the terminals TU3, TV3, and TW3 are short-circuited, and a voltage is applied to both the low-speed coil unit 460 and the low-speed coil unit 470 in each phase coil 401b of the electric motor 400.
  • the impedance of the coil 401b of each phase becomes large, a large voltage can be applied to the coil 401b, and the torque of the electric motor 400 during low speed driving can be increased.
  • the winding switching unit CS turns on the high-speed switch SW1 and turns off the low-speed switch SW2 during high-speed driving.
  • the terminals TU2, TV2, and TW2 are short-circuited, and a voltage is applied only to the low-speed coil section 460 in each phase coil 401b of the electric motor 400.
  • the impedance of the coil 401b of each phase is smaller than when driving at low speed, the electric motor 400 can be driven at high speed.
  • the coil 401b of each phase is provided with the low-speed coil unit 470 used only at low speeds and the low-high speed coil unit 460 used at both high speeds and low speeds.
  • the low speed coil portion 470 and the low speed coil portion 460 are disposed in the common slot 11.
  • the automobile 500 is provided with any one of the electric motors 100, 200, 300 and 400 of the first to fourth embodiments.
  • the remaining configuration of the fifth embodiment is similar to that of the aforementioned first to fourth embodiments.
  • the electric motor and the electric motor stator are shown, but a rotating electric machine such as a generator other than the electric motor and the stator for the electric rotating machine may be used.
  • the U-phase coil, the V-phase coil, and the W-phase coil are bent outward on one side of the coil end and bent inward (or outward) on the other side.
  • the U-phase coil, the V-phase coil, and the W-phase coil may be folded inward on both sides of the coil end.
  • connection portions of the U-phase, V-phase, and W-phase coils are formed so as to extend along the circumferential direction of the stator core. Further, it may be formed so as to extend in an arc shape along the circumferential direction, or may be formed so as to extend linearly along the circumferential direction. Moreover, you may form a connection part so that it may extend in curvilinear form other than circular arc shape along the circumferential direction.
  • the coil shown in FIG. 4 is a U-phase coil (first coil), the coil shown in FIG. 5 is a V-phase coil (second coil), and the shape shown in FIG.
  • the coil having the shape shown in FIG. 4 is a V-phase coil (W-phase coil)
  • the coil having the shape shown in FIG. 5 is a W-phase coil (U). 6 may be used as the U-phase coil (V-phase coil). That is, it is only necessary that coils having the same shape have the same phase.
  • the coils of the second embodiment (FIGS. 12, 13, and 14) and the coils of the third embodiment may have the same shape and the same phase. .
  • the example in which the motor of the first to fourth embodiments is provided in an automobile has been described.
  • the first to the second are applied to a vehicle for a construction machine or an agricultural vehicle. You may provide the electric motor of 4 embodiment.
  • the electric motors of the first to fourth embodiments may be provided in a ship, an aircraft, or the like.

Abstract

L'invention concerne une machine électrique tournante (100), dans laquelle une bobine (1b) comprend une première bobine (30), une deuxième bobine (40) et une troisième bobine (50), installées de manière correspondante par rapport à chaque phase d'un courant triphasé, les première, deuxième et troisième bobines étant conçues de manière à présenter des formes différentes comportant une longueur circonférentielle sensiblement identique.
PCT/JP2012/064274 2012-06-01 2012-06-01 Machine électrique tournante, stator pour faire tourner une machine électrique et véhicule WO2013179476A1 (fr)

Priority Applications (3)

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CN201280073489.4A CN104364998B (zh) 2012-06-01 2012-06-01 旋转电机、旋转电机用定子和车辆
PCT/JP2012/064274 WO2013179476A1 (fr) 2012-06-01 2012-06-01 Machine électrique tournante, stator pour faire tourner une machine électrique et véhicule
JP2014518199A JP5910738B2 (ja) 2012-06-01 2012-06-01 回転電機、回転電機用ステータおよび車両

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PCT/JP2012/064274 WO2013179476A1 (fr) 2012-06-01 2012-06-01 Machine électrique tournante, stator pour faire tourner une machine électrique et véhicule

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JP2019122250A (ja) * 2017-12-28 2019-07-22 株式会社デンソー 回転電機及び回転電機の製造方法
JP2020072509A (ja) * 2018-10-29 2020-05-07 株式会社デンソー 回転電機及び回転電機の製造方法
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US11368073B2 (en) 2017-12-28 2022-06-21 Denso Corporation Rotating electrical machine
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US11984795B2 (en) 2017-07-21 2024-05-14 Denso Corporation Rotating electrical machine
US11962228B2 (en) 2017-07-21 2024-04-16 Denso Corporation Rotating electrical machine
US11831228B2 (en) 2017-07-21 2023-11-28 Denso Corporation Rotating electrical machine
US11824428B2 (en) 2017-07-21 2023-11-21 Denso Corporation Rotating electrical machine
US11374465B2 (en) 2017-07-21 2022-06-28 Denso Corporation Rotating electrical machine
US11664708B2 (en) 2017-07-21 2023-05-30 Denso Corporation Rotating electrical machine
US11664693B2 (en) 2017-12-28 2023-05-30 Denso Corporation Rotating electrical machine
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US11368073B2 (en) 2017-12-28 2022-06-21 Denso Corporation Rotating electrical machine
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US11110793B2 (en) 2017-12-28 2021-09-07 Denso Corporation Wheel driving apparatus
US11863023B2 (en) 2017-12-28 2024-01-02 Denso Corporation Rotating electrical machine
US11962194B2 (en) 2017-12-28 2024-04-16 Denso Corporation Rotating electric machine
US11979063B2 (en) 2017-12-28 2024-05-07 Denso Corporation Rotating electric machine
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JP2020072509A (ja) * 2018-10-29 2020-05-07 株式会社デンソー 回転電機及び回転電機の製造方法
WO2022210716A1 (fr) * 2021-03-31 2022-10-06 ミネベアミツミ株式会社 Moteur
US11984778B2 (en) 2021-06-25 2024-05-14 Denso Corporation Rotating electric machine

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CN104364998A (zh) 2015-02-18
CN104364998B (zh) 2017-03-08
JP5910738B2 (ja) 2016-04-27
JPWO2013179476A1 (ja) 2016-01-18

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