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公开(公告)号：US20240428968A1
公开(公告)日：2024-12-26
申请号：US18665607
申请日：2024-05-16
Applicant: HONDA MOTOR CO., LTD.
Inventor： Jin Katsuya
Abstract: A coil unit includes a coil and a core member. The coil receives AC electric power transmitted in a contactless manner from an electric power transmission apparatus. The core member is formed of a directional magnetic material in sheet form. The core member is arranged on a rearward side of the coil when seen from the electric power transmission apparatus when the electric power transmission apparatus and the coil face each other. An outer shape of each of the coil and the core member is a rectangular annular shape. An orientation direction of the core member and a direction along a winding direction of the coil are orthogonal to each other in straight line portions that face each other of the coil and the core member.
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公开(公告)号：US20240322612A1
公开(公告)日：2024-09-26
申请号：US18582711
申请日：2024-02-21
Applicant: HONDA MOTOR CO., LTD.
Inventor： Jin Katsuya
IPC: H02J50/80 , B60L53/122 , H02J50/12
CPC classification number: H02J50/80 , H02J50/12 , B60L53/122
Abstract: A contactless electric power transmission system includes an electric power reception device and a control device. The electric power reception device receives electric power transmitted in a contactless manner between the electric power reception device and an electric power transmission device. The control device sets, in a coupling zone in which a coupling degree between a primary side coil of the electric power transmission device and a secondary side coil of the electric power reception device is equal to or more than a predetermined degree, a communication zone in which the coupling degree is relatively small, and an electric power transmission zone in which the coupling degree is relatively large. The control device transmits information relating to electric power transmission in the electric power transmission zone from the electric power reception device to the electric power transmission device by communication between the electric power transmission device and the electric power reception device when the secondary side coil is present in a foremost communication zone of the coupling zone.
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公开(公告)号：US20250118484A1
公开(公告)日：2025-04-10
申请号：US18895804
申请日：2024-09-25
Applicant: HONDA MOTOR CO., LTD.
Inventor： Jin Katsuya
Abstract: A coil unit includes a primary coil or a secondary coil configured to transmit or receive electric power between a power transmitting unit and a power receiving unit by contactless power transmission, and a primary magnetic member or a secondary magnetic member disposed on a rear side of each of the coils. When seen in an axial direction along a central axis, the magnetic member has a primary first portion or a secondary first portion that is located inward from an outer circumferential end portion of each of the coils in a direction perpendicular to the axial direction, and a primary second portion or a secondary second portion that protrudes from each of the first portions outward with respect to the outer circumferential end portion.
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公开(公告)号：US20250026209A1
公开(公告)日：2025-01-23
申请号：US18744740
申请日：2024-06-17
Applicant: HONDA MOTOR CO., LTD.
Inventor： Jin Katsuya , Tsutomu Kamiyamaguchi
IPC: B60L53/122 , B60L53/53 , B60L53/60
Abstract: A drive unit includes a subsidiary frame, a power receiving device, an electrical storage device, an electric power control device, and a rotating electric machine. The subsidiary frame is fixed to a lower portion of a vehicle body. The power receiving device is disposed below the subsidiary frame and integrally fixed to the subsidiary frame. The power receiving device receives alternating current electric power transmitted from a power transmission device in a non-contact manner. The rotating electric machine is integrally fixed to the subsidiary frame. The electrical storage device and the electric power control device are integrally fixed to the rotating electric machine. The electrical storage device transmits and receives electric power to and from the rotating electric machine. The electric power control device controls electric power transmission and reception between the electrical storage device and the rotating electric machine.
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公开(公告)号：US20240429747A1
公开(公告)日：2024-12-26
申请号：US18739358
申请日：2024-06-11
Applicant: HONDA MOTOR CO., LTD.
Inventor： Jin Katsuya
Abstract: A non-contact power transmission system includes a power reception unit, a received power conversion unit, a current sensor, and a control device. The power reception unit includes a secondary side coil for receiving AC power transmitted in a non-contact manner from a primary side coil of a power transmission device. The received power conversion unit converts AC power received by the power reception unit into DC power. The current sensor detects a current output from the received power conversion unit. The control device acquires a mutual inductance between the primary side coil and the secondary side coil on the basis of a detection value of the current output from the current sensor and controls the received power conversion unit in accordance with the mutual inductance.
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Patent Agency Ranking
公开(公告)号：US20230317371A1
公开(公告)日：2023-10-05
申请号：US18125160
申请日：2023-03-23
Applicant: HONDA MOTOR CO., LTD.
Inventor： Jin Katsuya
IPC: H01F41/064 , H01F41/077
CPC classification number: H01F41/064 , H01F41/077
Abstract: A coil includes: a wound conducting wire; and a terminal structure formed on an end of the conducting wire. The conducting wire is formed by bundling and twisting a plurality of strands. The strands are arranged longitudinally along a central axis of the coil. A method for manufacturing the coil includes: causing the end to pass through an internal space; then inserting a partition plate into a sleeve in a longitudinal direction so as to push the strands apart and arranging the strands in a first region and a second region; and then pinching the sleeve in a lateral direction and crushing the sleeve.
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公开(公告)号：US20230317367A1
公开(公告)日：2023-10-05
申请号：US18125163
申请日：2023-03-23
Applicant: HONDA MOTOR CO., LTD.
Inventor： Jin Katsuya
CPC classification number: H01F38/14 , H01F27/2823 , H02J50/10
Abstract: In a coil, a conducting wire is wound. A cross-section of the conducting wire is a rectangular shape having an aspect ratio of three or more. The conducting wire is arranged in a posture in which a longitudinal direction of the cross-section is along a central axis of the coil. A contactless power-receiving and supply system includes: a contactless power supply device including the coil; and a contactless power-receiving device including the coil.
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公开(公告)号：US20240429748A1
公开(公告)日：2024-12-26
申请号：US18741832
申请日：2024-06-13
Applicant: HONDA MOTOR CO., LTD.
Inventor： Jin Katsuya
IPC: H02J50/12
Abstract: A non-contact power transmission system includes a power reception unit, a received power conversion unit, a current sensor, and a control device. The power reception unit includes a secondary side coil for receiving AC power transmitted in a non-contact manner from a primary side coil of a power transmission device. The received power conversion unit converts AC power received by the power reception unit into DC power. The current sensor detects a current flowing between the power reception unit and the received power conversion unit. The control device executes a synchronous rectification operation by synchronously driving a plurality of switching elements of the received power conversion unit in accordance with a phase of the current when a detection value of a current output from the current sensor is equal to or larger than a predetermined threshold.
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公开(公告)号：US20240322600A1
公开(公告)日：2024-09-26
申请号：US18583909
申请日：2024-02-22
Applicant: HONDA MOTOR CO., LTD.
Inventor： Jin Katsuya
CPC classification number: H02J50/12 , H02J7/007194 , H02J50/05 , H02J50/80 , H02J2310/48
Abstract: A contactless electric power transmission system includes an electric power reception device and a control device. The electric power reception device receives AC electric power transmitted in a contactless manner from an electric power transmission device. The control device includes: a coil temperature detection portion that acquires temperatures of a secondary side coil, a magnetic member, and a secondary side capacitor of the electric power reception device; a magnetic member temperature detection portion; and a capacitor temperature detection portion. The control device includes a request frequency correction portion that corrects a request frequency of electric power transmission by the electric power transmission device based on the temperatures of the secondary side coil, the magnetic member, and the secondary side capacitor.
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公开(公告)号：US20240317082A1
公开(公告)日：2024-09-26
申请号：US18582700
申请日：2024-02-21
Applicant: HONDA MOTOR CO., LTD.
Inventor： Jin Katsuya
IPC: B60L53/126 , B60L58/32
CPC classification number: B60L53/126 , B60L58/32
Abstract: A contactless electric power transmission system includes an electric power reception device, a control device, a first temperature sensor, and a second temperature sensor. The electric power reception device includes a housing, a secondary side coil, a core member, and a substrate on which an element is mounted. The first temperature sensor detects a temperature of external air in contact with a surface of the housing. The second temperature sensor detects a temperature of the substrate. The control device estimates at least a temperature of the secondary side coil based on a thermal model of a coil unit and a detection value of the temperature output from each temperature sensor and controls electric power received from an electric power transmission device in response to the temperature of the secondary side coil.
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