WO2023026372A1 - ロータ及びモータ - Google Patents

ロータ及びモータ Download PDF

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Publication number
WO2023026372A1
WO2023026372A1 PCT/JP2021/031026 JP2021031026W WO2023026372A1 WO 2023026372 A1 WO2023026372 A1 WO 2023026372A1 JP 2021031026 W JP2021031026 W JP 2021031026W WO 2023026372 A1 WO2023026372 A1 WO 2023026372A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
magnetic
magnet
ring magnet
peripheral surface
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/JP2021/031026
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
義康 柴山
圭伍 今村
一輝 植田
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.)
Kawasaki Heavy Industries Ltd
Kawasaki Motors Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Kawasaki Jukogyo KK
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 Kawasaki Heavy Industries Ltd, Kawasaki Jukogyo KK filed Critical Kawasaki Heavy Industries Ltd
Priority to PCT/JP2021/031026 priority Critical patent/WO2023026372A1/ja
Priority to CN202280057326.0A priority patent/CN117837059A/zh
Priority to PCT/JP2022/023673 priority patent/WO2023026641A1/ja
Priority to JP2023543710A priority patent/JP7723102B2/ja
Priority to US18/685,339 priority patent/US20240348114A1/en
Publication of WO2023026372A1 publication Critical patent/WO2023026372A1/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
    • 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
    • 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
    • H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
    • H02K1/2733—Annular magnets
    • 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

  • the technology disclosed here relates to rotors and motors.
  • Patent Document 1 discloses a rotor provided with polar anisotropic magnets.
  • the strength of the magnetic field formed by magnets becomes difficult to increase when the amount of magnets exceeds a certain amount. That is, the upper limit of the strength of the magnetic field formed by the magnet depends on the physical properties of the magnet material. Therefore, it is difficult to improve the torque of the motor.
  • the technology disclosed here has been made in view of this point, and its purpose is to improve the torque of the motor.
  • the rotor disclosed herein includes a rotor body that rotates around a rotation axis, and a plurality of magnetic poles arranged in a circumferential direction around the rotation axis. and a plurality of magnetic bodies arranged at positions corresponding to the plurality of magnetic poles on the outer peripheral surface of the polar anisotropic magnet.
  • the motor disclosed here includes the rotor and a stator that drives the rotor.
  • FIG. 1 is a cross-sectional view of the motor.
  • FIG. 2 is a cross-sectional view of a permanent magnet and magnetic bodies.
  • FIG. 3 is an enlarged sectional view of the rotor.
  • FIG. 4 is an enlarged sectional view of a modified rotor.
  • FIG. 5 is a sectional view of a rotor of another modification.
  • FIG. 1 shows a motor 100 according to an embodiment.
  • the motor 100 includes a rotor 1 that rotates around a predetermined rotation axis A1, and a stator 6 that rotates the rotor 1 around the rotation axis A1.
  • the motor 100 may further include a motor case 7 .
  • a motor case 7 accommodates the rotor 1 and the stator 6 .
  • the stator 6 is fixed with respect to the motor case 7 .
  • the rotor 1 is rotatably supported by the motor case 7 .
  • rotation axis direction A circumferential direction about the rotation axis A1 is called a “circumferential direction”.
  • a radial direction about the rotation axis A1 is called a “radial direction”.
  • the side radially directed toward the axis of rotation A1 is referred to as “radially inner”, and the side opposite to the axis of rotation A1 is referred to as "radially outer”.
  • the stator 6 has a stator core 61 and windings 62 .
  • Stator core 61 is a soft magnetic material.
  • the stator core 61 is formed, for example, from a plurality of laminated electromagnetic steel sheets.
  • the stator core 61 is formed in an annular shape. Specifically, stator core 61 is formed in a cylindrical shape. The stator core 61 is fixed to the motor case 7 . The stator core 61 is formed with a plurality of teeth 61a projecting inwardly of the stator core 61 . A plurality of teeth 61a are arranged in a line in the circumferential direction of stator core 61 at intervals. The winding 62 is wound around a plurality of teeth 61a. By supplying current to the windings 62 , the stator 6 forms a rotating magnetic field that rotates the rotor 1 .
  • the rotor 1 includes a rotor body 2, a polar anisotropic ring magnet 4 (hereinafter referred to as "ring magnet 4"), and a plurality of magnetic bodies 3.
  • the rotor body 2 rotates around the rotation axis A1.
  • the ring magnet 4 is provided on the outer peripheral surface of the rotor body 2 . That is, the motor 100 is an SPM (Surface Permanent Magnet) motor.
  • the ring magnet 4 forms a plurality of magnetic poles 41 (see FIG. 2) arranged in the circumferential direction.
  • the magnetic body 3 is provided on the outer peripheral surface 42 (that is, the radially outer surface) of the ring magnet 4 and concentrates the magnetic flux of the ring magnet 4 .
  • the ring magnet 4 is an example of a polar anisotropic magnet.
  • the rotor body 2 contains, for example, a soft magnetic material.
  • the rotor body 2 includes a rotor core 20 and a shaft 5 .
  • the rotor core 20 is, for example, a soft magnetic material.
  • the rotor core 20 is formed, for example, from a plurality of electromagnetic steel sheets laminated together.
  • the rotor core 20 is formed in an annular shape surrounding the rotation axis A1.
  • the rotor core 20 is formed in a cylindrical shape centered on the rotation axis A1.
  • the outer peripheral surface of the rotor core 20 forms the outer peripheral surface of the rotor body 2 .
  • the cross-sectional shape of rotor core 20 orthogonal to rotation axis A1 is the same over the entire length of rotor core 20 in the rotation axis direction.
  • the shaft 5 is fitted inside the rotor core 20 .
  • Shaft 5 is fixed to rotor core 20 .
  • the shaft 5 is, for example, a soft magnetic material.
  • the axis of the shaft 5 coincides with the rotation axis A1.
  • the shaft 5 is rotatably supported by the motor case 7 via bearings and the like.
  • the rotor core 20 rotates together with the shaft 5 around the rotation axis A1.
  • the ring magnet 4 is provided on the outer peripheral surface of the rotor core 20 .
  • Ring magnet 4 is formed in an annular shape surrounding rotor core 20 .
  • the ring magnet 4 is formed in a cylindrical shape centered on the rotation axis A1.
  • the ring magnet 4 is formed over the entire length of the rotor core 20 in the rotation axis direction.
  • An air gap is formed between the outer peripheral surface 42 of the ring magnet 4 and the inner peripheral surface of the stator core 61 .
  • the ring magnet 4 is, for example, a bond magnet.
  • a bonded magnet is formed from a magnetic material that includes magnet powder and a binder that binds the magnet powder.
  • the magnetic powder is, for example, a powder of a neodymium magnet, a samarium-iron-nitrogen magnet, a samarium-cobalt magnet, a ferrite magnet, an alnico magnet, or a mixture of two or more of these powders.
  • the binder is, for example, thermosetting resin such as epoxy resin, thermoplastic resin such as polyamide resin, or rubber.
  • a polar anisotropic magnet having a residual magnetic flux density of 0.9 T or less is used.
  • the ring magnet 4 is formed by insert molding, for example.
  • the ring magnet 4 is formed, for example, by injecting a magnet material that will become a bond magnet into a mold containing the rotor core 20 and the plurality of magnetic bodies 3 .
  • FIG. 2 is a cross-sectional view of the ring magnet 4 and the magnetic body 3.
  • FIG. 3 is an enlarged sectional view of the rotor 1.
  • FIG. Magnetic poles 41 that alternate in the circumferential direction are formed on the outer peripheral surface 42 of the ring magnet 4 .
  • the ring magnet 4 in this example has six magnetic poles 41 .
  • the plurality of magnetic poles 41 are arranged at equal intervals in the circumferential direction on the outer peripheral surface 42 of the ring magnet 4 .
  • the arrow drawn inside the ring magnet 4 in FIG. 2 indicates the orientation direction of the ring magnet 4 .
  • the ring magnet 4 is oriented in a direction extending from the N pole, which is one of the two magnetic poles 41 adjacent in the circumferential direction, toward the S pole, which is the other magnetic pole 41 .
  • the ring magnet 4 is magnetized such that the magnetization direction matches the orientation direction.
  • the ring magnet 4 can concentrate the magnetic flux in a part of the outer peripheral surface 42 in the circumferential direction and increase the magnetic flux density of the magnetic poles 41 compared to the radially anisotropic magnet. Therefore, the ring magnet 4 is advantageous in that the magnet torque can be improved compared to the radially anisotropic magnet.
  • Recesses 43 are formed at positions corresponding to the magnetic poles 41 on the outer peripheral surface 42 of the ring magnet 4 .
  • the outer peripheral surface 42 of the ring magnet 4 is formed by a plurality of curved surfaces 44 that match the outer peripheral surface of a single imaginary cylinder centered on the rotation axis A1, and a plurality of concave portions 43 that are recessed radially inward.
  • the curved surfaces 44 and the recesses 43 are alternately arranged in the circumferential direction.
  • the recess 43 extends in the direction of the rotation axis and opens radially outward.
  • the circumferential width of the concave portion 43 in this example increases radially outward.
  • the cross-sectional shape of the concave portion 43 perpendicular to the rotation axis A1 is symmetrical about the axis of symmetry A2 extending in the radial direction.
  • the magnetic body 3 is arranged at a position corresponding to the magnetic pole 41 (that is, the recess 43) of the ring magnet 4.
  • the rotor 1 of this example has the same number of magnetic bodies 3 as the magnetic poles 41 , and the magnetic bodies 3 are arranged at positions corresponding to all the magnetic poles 41 .
  • the magnetic material 3 is, for example, a soft magnetic material.
  • the magnetic body 3 is formed, for example, from a plurality of magnetic steel sheets laminated together.
  • the magnetic permeability of the magnetic body 3 is higher than that of air. For this reason, the magnetic flux of the ring magnet 4 is difficult to enter/exit the air gap, and enters/exits the magnetic body 3 intensively. That is, the magnetic body 3 is a portion of the rotor 1 where the magnetic flux of the ring magnet 4 is most concentrated.
  • the magnetic body 3 has an inner surface 31 positioned within the recess 43 and an outer surface 32 exposed radially outward from the recess 43 .
  • the inner surface 31 is in close contact with the inner surface of the recess 43 of the ring magnet 4 (that is, the magnetic pole 41).
  • the magnetic body 3 is fixed with respect to the ring magnet 4 .
  • the magnetic body 3 is fixed to the ring magnet 4 by, for example, bonding the inner surface 31 to the inner surface of the recess 43 when the ring magnet 4 and the magnetic body 3 are integrally molded.
  • the outer surface 32 of the magnetic body 3 is flush with the curved surface 44 of the ring magnet 4. Specifically, the outer surface 32 forms, together with the curved surface 44, the outer peripheral surface of a single imaginary cylinder centered on the rotation axis A1. The outer peripheral surface of the rotor 1 is formed by the curved surface 44 and the outer surface 32 .
  • the upper limit of the magnetic flux density of the magnetic poles 41 depends on the physical properties of the ring magnet 4 . Specifically, the upper limit of the magnetic flux density of the ring magnet 4 depends on the saturation magnetic flux density of the material of the ring magnet 4 .
  • the magnetic flux of the ring magnet 4 enters and exits the magnetic body 3 in a concentrated manner. That is, the magnetic flux density of the portion corresponding to the magnetic poles 41 on the outer peripheral surface of the rotor 1 increases. Therefore, the magnet torque is improved, and the torque of the motor is improved.
  • the magnetic body 3 is arranged in a recess 43 formed in the outer peripheral surface 42 of the ring magnet 4 . Therefore, the magnetic body 3 can be arranged on the ring magnet 4 without protruding radially outward from the curved surface 44 of the ring magnet 4 . Therefore, the air gap formed between the curved surface 44 of the ring magnet 4 and the stator 6 can be reduced. Therefore, the magnetic flux generated in the stator 6 can easily flow to the rotor 1, and the torque of the motor 100 is improved. Further, the outer surface 32 of the magnetic body 3 is flush with the curved surface 44 of the ring magnet 4 , and no step is formed between the outer surface 32 and the curved surface 44 on the outer peripheral surface of the rotor 1 . Therefore, air resistance during rotation of the rotor 1 is reduced, and the rotor 1 rotates efficiently.
  • the rotor 1 includes the rotor body 2 that rotates about the rotation axis A1, and the plurality of magnetic poles 41 arranged in the circumferential direction around the rotation axis A1.
  • a ring magnet 4 polar anisotropic magnet
  • a plurality of magnetic bodies 3 arranged at positions corresponding to the plurality of magnetic poles 41 on an outer peripheral surface 42 of the ring magnet 4 .
  • the motor 100 also includes the rotor 1 having the configuration described above and the stator 6 that drives the rotor 1 .
  • the magnetic flux of the ring magnet 4 concentrates and enters and exits the magnetic bodies 3 provided on the magnetic poles 41 of the ring magnet 4 . That is, the magnetic flux density of the portion corresponding to the magnetic poles 41 on the outer peripheral surface of the rotor 1 increases. Therefore, the magnet torque is improved, and the torque of the motor is improved.
  • recesses 43 are formed at positions corresponding to the plurality of magnetic poles 41 on the outer peripheral surface 42 of the ring magnet 4 , and the magnetic bodies 3 are arranged in the recesses 43 .
  • the magnetic body 3 can be arranged without protruding radially outward from the ring magnet 4, and the air gap formed between the ring magnet 4 and the stator 6 can be reduced. Therefore, the magnetic flux generated in the stator 6 can easily flow to the rotor 1, and the torque of the motor 100 is improved.
  • the residual magnetic flux density of the ring magnet 4 is 0.9 T or less.
  • the magnet torque of the rotor 1 provided with the ring magnet 4 having a residual magnetic flux density of 0.9 T or less can be improved.
  • the ring magnet 4 is a bond magnet.
  • the rotor body 2 may be formed only by the rotor core 20 without the shaft 5.
  • the rotor body 2 may be formed only by the shaft 5 without the rotor core 20 .
  • the shaft 5 does not have to be a soft magnetic material.
  • Shaft 5 may be formed integrally with rotor core 20 .
  • the residual magnetic flux density of the ring magnet 4 is not limited to 0.9T or less, and may exceed 0.9T.
  • the ring magnet 4 is not limited to a bonded magnet, and may be, for example, a sintered magnet formed by sintering magnetic powder.
  • the magnetic powder is, for example, a powder of a neodymium magnet, a samarium-iron-nitrogen magnet, a samarium-cobalt magnet, a ferrite magnet, an alnico magnet, or a mixture of two or more of these powders.
  • the ring magnet 4 may be one polar anisotropic magnet continuous in the circumferential direction, or may be a plurality of polar anisotropic magnets divided in the circumferential direction.
  • the number of magnetic poles 41 that the ring magnet 4 has is not limited.
  • the shape of the recess 43 of the ring magnet 4 is not limited.
  • the recess 43 of the ring magnet 4 can be omitted.
  • the outer peripheral surface 42 of the ring magnet 4 may be a curved surface that matches the outer peripheral surface of the virtual cylinder, and the magnetic body 3 may be provided on this curved surface.
  • the number of magnetic bodies 3 included in the rotor 1 is not limited.
  • the magnetic body 3 may be provided only on some of the magnetic poles 41 included in the ring magnet 4 .
  • the shape of the magnetic body 3 is not limited.
  • the outer surface 32 of the magnetic body 3 does not have to be flush with the curved surface 44 of the ring magnet 4 .
  • the outer surface 32 of the magnetic body 3 may protrude radially outward from the outer surface 32 of the magnetic body 3 or may be recessed radially inward.
  • the retaining portion 46 restricts the radially outward movement of the wide portion 33 . Therefore, the magnetic body 3 is less likely to come off from the ring magnet 4 .
  • FIG. 5 is a cross-sectional view of the rotor 1 of another modified example.
  • the rotor 1 shown in FIG. 5 includes a retaining member 8 that retains the magnetic body 3 arranged in the concave portion 43 .
  • the retaining member 8 is formed in an annular shape surrounding the ring magnet 4 .
  • the retainer member 8 is formed in a cylindrical shape centered on the rotation axis A1.
  • the retaining member 8 is fixed to the ring magnet 4 with the inner peripheral surface of the retaining member 8 in contact with the curved surface 44 of the ring magnet 4 and the outer surfaces 32 of the plurality of magnetic bodies 3 .
  • the retainer member 8 restricts the movement of the plurality of magnetic bodies 3, which receive centrifugal force when the rotor 1 rotates, toward the outside in the radial direction. Therefore, the magnetic body 3 is less likely to come off from the ring magnet 4 .
  • the retaining member 8 may be, for example, a non-magnetic material such as stainless steel or FRP (Fiber-Reinforced Plastics), or may be a magnetic material such as iron or steel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
PCT/JP2021/031026 2021-08-24 2021-08-24 ロータ及びモータ Ceased WO2023026372A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/JP2021/031026 WO2023026372A1 (ja) 2021-08-24 2021-08-24 ロータ及びモータ
CN202280057326.0A CN117837059A (zh) 2021-08-24 2022-06-13 内转子以及马达
PCT/JP2022/023673 WO2023026641A1 (ja) 2021-08-24 2022-06-13 インナロータ及びモータ
JP2023543710A JP7723102B2 (ja) 2021-08-24 2022-06-13 インナロータ及びモータ
US18/685,339 US20240348114A1 (en) 2021-08-24 2022-06-13 Inner rotor and motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/031026 WO2023026372A1 (ja) 2021-08-24 2021-08-24 ロータ及びモータ

Publications (1)

Publication Number Publication Date
WO2023026372A1 true WO2023026372A1 (ja) 2023-03-02

Family

ID=85321768

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/JP2021/031026 Ceased WO2023026372A1 (ja) 2021-08-24 2021-08-24 ロータ及びモータ
PCT/JP2022/023673 Ceased WO2023026641A1 (ja) 2021-08-24 2022-06-13 インナロータ及びモータ

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/023673 Ceased WO2023026641A1 (ja) 2021-08-24 2022-06-13 インナロータ及びモータ

Country Status (4)

Country Link
US (1) US20240348114A1 (https=)
JP (1) JP7723102B2 (https=)
CN (1) CN117837059A (https=)
WO (2) WO2023026372A1 (https=)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025263466A1 (ja) * 2024-06-21 2025-12-26 株式会社デンソー モータ磁石、それを含む界磁子、および、モータ
DE102024127773A1 (de) * 2024-09-25 2026-03-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Hochdrehzahlmaschine für ein Kraftfahrzeug

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH062976U (ja) * 1992-05-30 1994-01-14 愛知電機株式会社 プラスチックマグネットローター
JPH09205746A (ja) * 1996-01-25 1997-08-05 Shibaura Eng Works Co Ltd 電動機
JP2005057945A (ja) * 2003-08-07 2005-03-03 Mitsubishi Electric Corp 焼結リング磁石
WO2020090365A1 (ja) * 2018-10-30 2020-05-07 株式会社デンソー 回転電機
WO2020189442A1 (ja) * 2019-03-19 2020-09-24 株式会社デンソー 回転電機、及び回転子の製造方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004120892A (ja) * 2002-09-26 2004-04-15 Hitachi Ltd リング磁石とその製造法及びそれを用いた回転子並びにモータ
JP5917333B2 (ja) * 2012-08-20 2016-05-11 アスモ株式会社 回転電機の回転子
JP2015226337A (ja) * 2014-05-26 2015-12-14 日東電工株式会社 回転電機用永久磁石、回転電機用永久磁石の製造方法、回転電機及び回転電機の製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH062976U (ja) * 1992-05-30 1994-01-14 愛知電機株式会社 プラスチックマグネットローター
JPH09205746A (ja) * 1996-01-25 1997-08-05 Shibaura Eng Works Co Ltd 電動機
JP2005057945A (ja) * 2003-08-07 2005-03-03 Mitsubishi Electric Corp 焼結リング磁石
WO2020090365A1 (ja) * 2018-10-30 2020-05-07 株式会社デンソー 回転電機
WO2020189442A1 (ja) * 2019-03-19 2020-09-24 株式会社デンソー 回転電機、及び回転子の製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025263466A1 (ja) * 2024-06-21 2025-12-26 株式会社デンソー モータ磁石、それを含む界磁子、および、モータ
DE102024127773A1 (de) * 2024-09-25 2026-03-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Hochdrehzahlmaschine für ein Kraftfahrzeug

Also Published As

Publication number Publication date
WO2023026641A1 (ja) 2023-03-02
JPWO2023026641A1 (https=) 2023-03-02
CN117837059A (zh) 2024-04-05
JP7723102B2 (ja) 2025-08-13
US20240348114A1 (en) 2024-10-17

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