WO2023132011A1 - 回転子 - Google Patents

回転子 Download PDF

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Publication number
WO2023132011A1
WO2023132011A1 PCT/JP2022/000102 JP2022000102W WO2023132011A1 WO 2023132011 A1 WO2023132011 A1 WO 2023132011A1 JP 2022000102 W JP2022000102 W JP 2022000102W WO 2023132011 A1 WO2023132011 A1 WO 2023132011A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor core
magnetic
gaps
magnet housing
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/000102
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
秀樹 久田
将 鹿野
秀範 内田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Toshiba Infrastructure Systems and Solutions Corp
Original Assignee
Toshiba Corp
Toshiba Infrastructure Systems and Solutions Corp
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 Toshiba Corp, Toshiba Infrastructure Systems and Solutions Corp filed Critical Toshiba Corp
Priority to CN202280005028.7A priority Critical patent/CN116830425A/zh
Priority to PCT/JP2022/000102 priority patent/WO2023132011A1/ja
Priority to EP22902478.1A priority patent/EP4462650A4/en
Priority to JP2022559305A priority patent/JP7520998B2/ja
Priority to US18/317,842 priority patent/US12537404B2/en
Publication of WO2023132011A1 publication Critical patent/WO2023132011A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • Embodiments of the present invention relate to a rotor of a rotating electric machine having permanent magnets.
  • This rotating electrical machine includes a cylindrical stator and a columnar rotor rotatably supported inside the stator.
  • the rotor includes a rotor core and multiple permanent magnets embedded in the rotor core. These permanent magnets form a plurality of magnetic poles in the circumferential direction of the rotor core.
  • a rotor includes: a rotor core; a plurality of first magnet housing regions provided at predetermined intervals along the circumferential direction of the rotor core and perpendicular to the radial direction of the rotor core; a plurality of first permanent magnets housed in each of the first magnet housing regions and forming a plurality of magnetic poles in the circumferential direction of the rotor core; a pair of first inner magnetic gaps in contact with both ends of the region; provided at each of the magnetic poles of the rotor core, adjacent to each of the first inner magnetic gaps and through the outer peripheral surface of the rotor core a pair of first outer magnetic gaps open to the outside of the rotor core; between the first inner magnetic gaps and the first outer magnetic gaps in the magnetic poles of the rotor core; a pair of first bridge portions provided in the rotor core and having a mutual spacing extending from the outer peripheral side to the inner peripheral side; a pair of second magnet housing areas provided in a sandwiched state, one end positioned
  • FIG. 1 is a cross-sectional view of a permanent magnet type rotating electric machine according to one embodiment.
  • FIG. 2 is a cross-sectional view showing the configuration of magnetic poles in one embodiment; 3 is a diagram showing an example of a force applied to the rotor core in FIG. 2;
  • FIG. 6 is a cross-sectional view showing another enlarged main part of FIG. 2; FIG. Figure shown for reference.
  • each drawing is a schematic diagram for facilitating the embodiment and its understanding, and there are places where the shape, size, ratio, etc. are different from the actual device, but these are based on the following description and known technology. The design can be changed as appropriate.
  • FIG. 1 is a transverse cross-sectional view of a permanent magnet type rotating electric machine according to one embodiment
  • FIG. 2 is an enlarged transverse cross-sectional view showing one magnetic pole in a rotor core
  • a rotating electric machine 1 is configured as, for example, an inner rotor type rotating electric machine, and has an annular or cylindrical stator 10 supported by a fixing frame (not shown). It includes a cylindrical rotor 20 which has a (rotational center) G and is rotatably supported coaxially with the stator 10 .
  • the rotary electric machine 1 is suitably applied to a drive motor or generator in, for example, a hybrid vehicle (HEV) or an electric vehicle (EV).
  • HEV hybrid vehicle
  • EV electric vehicle
  • the stator 10 includes a cylindrical stator core 11 and an armature winding (coil) 12 wound around the stator core 11 .
  • the stator core 11 is configured by concentrically laminating a large number of magnetic material, for example, circular magnetic steel plates (core pieces) such as silicon steel.
  • a plurality of slots 13 are formed in the inner peripheral portion of the stator core 11 .
  • the slots 13 are arranged at regular intervals in the circumferential direction of the stator core 11 .
  • Each slot 13 opens in the inner peripheral surface of the stator core 11 and extends radially from the inner peripheral surface.
  • Each slot 13 extends over the entire axial length of the stator core 11 .
  • a plurality of (for example, 48) stator teeth 14 facing the rotor 20 are formed on the inner circumference of the stator core 11 .
  • the armature winding 12 is inserted through each slot 13 and wound around each stator tooth 14 .
  • a predetermined interlinkage magnetic flux is formed in the stator 10 (stator teeth 14) by the current flowing through the armature winding 12 .
  • the rotor 20 includes a cylindrical rotating shaft (shaft) 21 whose both ends are rotatably supported by bearings (not shown), a cylindrical rotor iron core 22 fixed to the center of the rotating shaft 21 in the axial direction,
  • the rotor core 22 has a plurality of permanent magnets M1 and a plurality of permanent magnets M2 embedded therein.
  • the rotor 20 is arranged coaxially inside the stator 10 with a small gap (air gap) between it and the inner peripheral surface of the stator 10 .
  • the outer peripheral surface of the rotor 20 faces the inner peripheral surface of the stator 10 with a slight gap.
  • the rotor core 22 has an inner hole 23 formed coaxially with the central axis G. As shown in FIG. Rotating shaft 21 is inserted and fitted into inner hole 23 and extends coaxially with rotor core 22 .
  • the rotor core 22 is configured as a laminate in which a large number of magnetic materials, for example, circular magnetic steel plates (core pieces) such as silicon steel, are concentrically laminated.
  • the rotor core 22 has the central axis G extending in the lamination direction of the core pieces, and an outer peripheral surface 22x facing the inner peripheral surface of the stator 10 with a small gap (air gap) therebetween.
  • the rotor core 22 has a plurality of magnetic poles, for example eight magnetic poles.
  • the lines extending in the radial direction of the rotor core 22 through the central axis G and the boundary between the magnetic poles adjacent in the circumferential direction are the q-axes, and the electrical Axes spaced apart by 90°, that is, lines extending radially from the central axis G through the centers of the magnetic poles in the circumferential direction are called d-axes.
  • the direction in which the interlinkage magnetic flux formed by the stator 10 easily flows is the q-axis.
  • These d-axis and q-axis are provided alternately in the circumferential direction of the rotor core 22 with a predetermined phase.
  • One magnetic pole portion of the rotor core 22 refers to the area between two q-axes adjacent in the circumferential direction (circumferential angle area of 1/8 circumference).
  • the center of one magnetic pole in the circumferential direction is the d-
  • the rotor core 22 is provided at predetermined intervals in the circumferential direction of the rotor core 22 and perpendicular to the d-axis (radial direction) of the rotor core 22 . It has a plurality of shaped first magnet receiving regions 31 .
  • the permanent magnets M1 are housed in each first magnet housing area 31 and fixed to the rotor core 22 by, for example, an adhesive.
  • One permanent magnet M1 is housed in each of the first magnet housing areas 31, and the eight magnetic poles are formed by each of the permanent magnets M1.
  • the permanent magnet M1 is magnetized in a direction perpendicular to its long sides. Further, the permanent magnet M1 is formed, for example, in the shape of an elongated flat plate having a rectangular cross section, and has a length substantially equal to the length of the rotor core 22 in the axial direction.
  • the permanent magnets M1 are embedded over substantially the entire length of the rotor core 22 .
  • the permanent magnet M1 may be configured by combining a plurality of magnets divided in the axial direction (longitudinal direction). In this case, the total length of the plurality of magnets is substantially equal to the axial length of the rotor core 22. formed to be
  • Each first magnet housing area 31 is formed in a rectangular shape corresponding to the cross-sectional shape of the permanent magnet M1 and axially penetrating the rotor core 22 .
  • Each first magnet housing region 31 has one end portion 31a and the other end portion 31b that are open in the longitudinal direction, and an outer edge (peripheral long side) on the side facing the outer peripheral surface 22x of the rotor core 22. 31c, and an inner edge (inner peripheral long side) 31d on the side facing the central axis G.
  • a region from the inner edge 31d to the one end 31a and a region from the inner edge 31d to the other end 31b of each first magnet housing region 31 are provided with magnet holding magnets for restricting the movement of the permanent magnets M1.
  • Protrusions 31e and 31f are formed respectively.
  • Each magnetic pole of the rotor core 22 is provided with a pair of first inner peripheral side magnetic gaps 32, 32 in contact with one end 31a and the other end 31b of the first magnet housing region 31.
  • the first inner magnetic air gaps 32, 32 are formed so as to penetrate the rotor core 22 in the axial direction.
  • the first inner peripheral side magnetic gaps 32, 32 are magnetic gaps containing non-magnetic material such as air.
  • side edge 32b extending obliquely along the first bridge portion 34 of the permanent magnet M1; ) functions as a flux barrier to prevent a short circuit, and also contributes to weight reduction of the rotor core 22 .
  • Each magnetic pole of the rotor core 22 is provided with a pair of first outer magnetic gaps that are adjacent to the first inner magnetic gaps 32, 32 and open to the outside of the rotor core 22 through the outer peripheral surface 22X of the rotor core 22.
  • 33, 33 are provided.
  • the first outer magnetic air gaps 33, 33 are formed so as to penetrate the rotor core 22 in the axial direction.
  • the first outer magnetic air gaps 33, 33 are magnetic air gaps. includes a side edge 33b that opens to the outer periphery of the rotor core 22 through the outer peripheral surface 22x, a side edge 33c that continues from the side edge 33b to the side edge 33a, and the side edge 33b opens to the outside of the rotor core 22.
  • each magnetic pole of the rotor core 22 the distance between each of the first inner magnetic gaps 32 and the first outer magnetic gaps 33 from the outer circumference of the rotor core 22 toward the inner circumference is A pair of gradually widening first bridge portions 34, 34 are provided.
  • the first magnet accommodation area 31, the permanent magnets M1, the first inner magnetic gaps 32, the first outer magnetic gaps 33, and the first bridge portions 34 form a first layer flux barrier.
  • a region on the outer peripheral side of the first-layer flux barrier serves as the first core portion 22a.
  • each magnetic pole of the rotor core 22 one end portion 41a is positioned on the outer peripheral side of the rotor core 22 and the other end portion 41b is positioned on the inner peripheral side of the rotor core 22 with the first magnet housing region 21 sandwiched therebetween.
  • a pair of positioned second magnet receiving areas 41, 41 are provided.
  • the second magnet housing regions 41, 41 are arranged in line symmetrically with respect to the d-axis, for example, in a substantially V shape.
  • the second magnet housing regions 41, 41 extend at an angle ⁇ smaller than 90 degrees with respect to the d-axis.
  • the second magnet housing areas 41, 41 are provided so as to be inclined so that the distance from the d-axis gradually increases from the inner peripheral side to the outer peripheral side of the rotor core 22.
  • the angle ⁇ can be arbitrarily changed without being limited to the illustrated example.
  • the permanent magnets M2 are housed in the respective second magnet housing areas 41 and fixed to the rotor core 22 by, for example, an adhesive.
  • the permanent magnet M2 forms each magnetic pole with each permanent magnet M1.
  • the permanent magnet M2 is magnetized in a direction perpendicular to its long sides.
  • the permanent magnet M2 is formed, for example, in the shape of an elongated flat plate having a rectangular cross section, and has a length substantially equal to the length of the rotor core 22 in the axial direction.
  • the permanent magnets M2 are embedded over substantially the entire length of the rotor core 22.
  • the permanent magnet M2 may be configured by combining a plurality of magnets divided in the axial direction (longitudinal direction). In this case, the total length of the plurality of magnets is approximately equal to the axial length of the rotor core 22. formed to be
  • Each second magnet accommodation area 41 is formed in a rectangular shape corresponding to the cross-sectional shape of the permanent magnet M2 and axially penetrating the rotor core 22 .
  • Each second magnet housing region 41 has one end 41a and the other end 41b in the longitudinal direction, and also has one side edge 41c facing the d-axis and the other side edge 41d facing the q-axis. are doing.
  • a region extending from the other side edge 41d to the one end portion 41a and a region extending from the other side edge 41d to the other end portion 41b of each second magnet housing region 41 are provided with magnets for restricting the movement of the permanent magnets M2.
  • Magnet holding projections 41e and 41f are formed respectively.
  • a pair of second outer peripheral side magnetic gaps that contact the magnetic poles of the rotor core 22 with one end 41a of each second magnet housing region 41 and are opened to the outside of the rotor core 22 through the outer peripheral surface 22x of the rotor core 22. 42, 42 are provided.
  • the second outer magnetic air gaps 42, 42 are formed so as to penetrate the rotor core 22 in the axial direction.
  • the second outer peripheral side magnetic gaps 42, 42 are magnetic gaps, side edges 42a extending from one side edge 41c of each second magnet housing area 41 in the same plane as the side edge 41c, and this side edge 42a.
  • Each magnetic pole of the rotor core 22 is provided with a pair of second inner peripheral side magnetic gaps 43, 43 in contact with the other end 41b of each second magnet housing region 41.
  • the second inner magnetic air gaps 43, 43 are formed so as to penetrate the rotor core 22 in the axial direction.
  • the second inner peripheral side magnetic gaps 43, 43 are magnetic gaps, side edges 43a extending from positions in contact with one side edge 41c of each second magnet housing area 41 toward the d-axis, and this side edge 43a. , a side edge 43c curved from the side edge 43b toward the q-axis side, and a side edge 43d rising from the side edge 43c toward the side edge 41d of each of the second magnet housing regions 41.
  • the third magnetic air gap 44 is a magnetic air gap, has a rectangular cross-sectional shape consisting of four side edges 44a to 44d, and is formed along the entire length of the rotor core 22 in the axial direction. Of the four side edges 44a to 44d forming the third magnetic gap 44, the side edge 44a located on the outer peripheral side faces the first magnet housing area 31 in a state perpendicular to the d-axis and is located on the inner peripheral side.
  • the side edge 44c is parallel to the side edge 44a and faces the inner hole 23, and the side edges 44b and 44d located between the side edges 44a and 44c are parallel to each other to form a second bridge portion 45, which will be described later. Adjacent to 45.
  • the outer peripheral side edge 44a is located on the same line as the line connecting the outer peripheral side edges 43a of the second inner magnetic gaps 43, 43 to each other.
  • the inner peripheral side edge 44a is located on the same line as the line connecting the inner peripheral side edges 42c of the second inner magnetic gaps 43, 43 to each other.
  • the second inner magnetic gaps 43 , 43 serve as passages for coolant (cooling oil) and contribute to weight reduction of the rotor core 22 .
  • a pair of second bridge portions 45 , 45 are provided between each of the second inner magnetic gaps 43 and the third magnetic gaps 44 in each magnetic pole of the rotor core 22 .
  • each second magnet housing area 41 With each second magnet housing area 41, each permanent magnet M2, each second outer magnetic gap 42, each second inner magnetic gap 43, third magnetic gap 44, and each second bridge portion 45, 45, two A layered flux barrier is formed.
  • a region surrounded by the second-layer flux barrier and the first-layer flux barrier serves as a second core portion 22b, and a region on the inner peripheral side of the second-layer flux barrier serves as a third core portion 22c.
  • the pair of first bridge portions 34, 34 in each magnetic pole of the rotor core 22 are coupling elements that couple the first core portion 22a and the second core portion 22b, and the distance between them is the inner circumference of the rotor core 22. It is formed in a columnar shape extending at an angle so as to gradually widen from the side to the outer peripheral side.
  • the widths of the first bridge portions 34, 34 are the same as each other, and are made as thin as possible so as to reduce leakage of magnet magnetic flux, but have sufficient strength against strong bending stress applied to each of the first bridge portions 34, 34. It is set to the minimum necessary state to have.
  • the first bridge portions 34, 34 allow the first iron core portion 22a to move to the second iron core. It can be stably supported from the part 22b side.
  • the pair of second bridge portions 45, 45 in each magnetic pole of the rotor core 22 are coupling elements that couple the second core portion 22b and the third core portion 22c, and are formed in a columnar shape extending substantially parallel to the d-axis. ing.
  • the widths of the second bridge portions 45, 45 are the same as each other, and are as narrow as possible so as to reduce the leakage of the magnetic flux of the magnet. is set to Even if a circumferential electromagnetic force is applied to the first iron core portion 22a and the second iron core portion 22b of the rotor core 22 under conditions where a large rotational torque is generated, the second bridges 45, 45 allow the first iron core portion 22a and the second core portion 22b can be stably supported from the third core portion 22c side.
  • first bridge portions 34, 34 are inclined so that the distance between them gradually widens from the inner peripheral side to the outer peripheral side of the rotor core 22, bending applied to the first bridge portions 34, 34 Can relieve stress. That is, as shown in FIG. 3, in a state where the rotor core 22 generates rotational torque in the illustrated clockwise direction, a force P in the direction of the arrow, such as centrifugal force or electromagnetic attraction force, acts on the outer peripheral surface 22x of the rotor torque 22. Even if it is applied, the bending stress applied to the root portions of the first bridge portions 34, 34 can be relaxed, thereby suppressing the deformation of the first bridge portions 34, 34 and the accompanying displacement of the outer peripheral portion of the rotor core 22 to be small. can be done.
  • each magnetic pole of the rotor core 22 has an outer peripheral surface 22x and first outer magnetic air gaps 33, 33 connected to each other.
  • a pair of first cut holes 51, 51 are provided that are opened to the outside of the outer peripheral surface 22x.
  • a pair of second cut-out holes 52, 52 are provided to open to the outside of 22x.
  • the first cut holes 51 , 51 and the second cut holes 52 , 52 extend along the axial direction of the rotor core 22 .
  • first grooves also referred to as concave portions or face cut portions
  • second grooves also called a face cut portion
  • third grooves also referred to as concave portions or face cut portions
  • the flux barrier of the first layer is opened to the outside of the rotor core 22 through the first cut holes 51, 51, and the flux barrier of the second layer is opened through the second cut holes 52, 52.
  • the magnetic resistance of the outer peripheral portion of the rotor core 22 changes sharply, so that noise, vibration, torque pulsation, and the like are likely to occur.
  • the outer peripheral surface 22x of the rotor core 22 is provided with the first grooves 61, 61 between the first cut holes 51, 51 in each magnetic pole, and the first grooves 61 in each magnetic pole are provided.
  • Second grooves 62, 62 are provided between the cut holes 51, 51 and the second cut holes 52, 52, and third grooves 63 are provided between the second cut holes 52, 52 and the q-axis in each magnetic pole. , 63.
  • the existence of at least the first grooves 61, 61 and the second grooves 62, 62 makes it possible to suppress changes in the magnetic resistance of the outer peripheral portion of the rotor core 22 to a practical level.
  • the circumferential width E1 and radial depth F1 of the first grooves 61 and 61 are greater than the circumferential width E2 and radial depth F2 of the second grooves 62 and 63.
  • the larger size results in a more appropriate flux linkage distribution in rotor core 22 and stator 10 . Thereby, noise, vibration, and torque pulsation can be reduced more effectively.
  • each first cut hole 51 is smaller than the width dimension B1 in the circumferential direction of each first outer magnetic gap 33 .
  • a portion where each first cut hole 51 is narrower than each first outer magnetic gap 33 in the circumferential direction serves as a tip portion 51a.
  • a width dimension A2 of each second cut hole 52 in the circumferential direction is smaller than a width dimension B2 of each second outer magnetic gap 42 in the circumferential direction.
  • a portion where each first cut hole 52 is narrower than each second outer magnetic gap 42 in the circumferential direction serves as a tip portion 52a.
  • the tip portions 51a and 52a should be present in addition to the first groove portions 61 and 61 and the second groove portions 62 and 62. is an important factor.
  • the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the present invention at the implementation stage.
  • various inventions can be formed by appropriate combinations of the plurality of constituent elements disclosed in the above embodiments. For example, some components may be omitted from all components shown in the embodiments. Furthermore, components across different embodiments may be combined as appropriate. For example, the number of magnetic poles, size, shape, etc. of the rotor are not limited to the above-described embodiments, and can be changed in various ways according to the design.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
PCT/JP2022/000102 2022-01-05 2022-01-05 回転子 Ceased WO2023132011A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN202280005028.7A CN116830425A (zh) 2022-01-05 2022-01-05 转子
PCT/JP2022/000102 WO2023132011A1 (ja) 2022-01-05 2022-01-05 回転子
EP22902478.1A EP4462650A4 (en) 2022-01-05 2022-01-05 ROTOR
JP2022559305A JP7520998B2 (ja) 2022-01-05 2022-01-05 回転子
US18/317,842 US12537404B2 (en) 2022-01-05 2023-05-15 Rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/000102 WO2023132011A1 (ja) 2022-01-05 2022-01-05 回転子

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/317,842 Continuation US12537404B2 (en) 2022-01-05 2023-05-15 Rotor

Publications (1)

Publication Number Publication Date
WO2023132011A1 true WO2023132011A1 (ja) 2023-07-13

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ID=87073461

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/000102 Ceased WO2023132011A1 (ja) 2022-01-05 2022-01-05 回転子

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Country Link
US (1) US12537404B2 (https=)
EP (1) EP4462650A4 (https=)
JP (1) JP7520998B2 (https=)
CN (1) CN116830425A (https=)
WO (1) WO2023132011A1 (https=)

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