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公开(公告)号：US20220072965A1
公开(公告)日：2022-03-10
申请号：US17528718
申请日：2021-11-17
Applicant: DENSO CORPORATION
Inventor： Kouji MAZAKI , Nobuhisa YAMAGUCHI , Eisuke TAKAHASHI , Mitsuru SHIBANUMA , Shinpei TAKITA , Masaya TAKAHASHI , Hayato SUMIYA , Masaki KANESAKI , Takuya KIGUCHI , Kazuhiro UDA , Yuusei NAKAYASHIKI
Abstract: In a moving-object power supply system, a control unit selects, as a power transmission segment, one of segments included in at least one power transmission section. The control unit supplies, through a power supply circuit, power to the power transmission segment to thereby generate a magnetic field through a power transmission coil of the power transmission segment. The control unit determines, based on an ascertained first electrical characteristic of the power transmission segment and an ascertained second electrical characteristic of at least one power non-transmission segment, whether there is a malfunction in each of the power transmission segment and the at least one power non-transmission segment.
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公开(公告)号：US20230331102A1
公开(公告)日：2023-10-19
申请号：US18214342
申请日：2023-06-26
Applicant: DENSO CORPORATION , THE UNIVERSITY OF TOKYO , BRIDGESTONE CORPORATION
Inventor： Hayato SUMIYA , Shimpei TAKITA , Kazuhiro UDA , Eisuke TAKAHASHI , Nobuhisa YAMAGUCHI , Hiroshi FUJIMOTO , Osamu SHIMIZU , Yasumichi WAKAO , Isao KUWAYAMA
CPC classification number: B60L53/12 , H02J50/12 , H02J50/50 , H02J50/005
Abstract: A power reception apparatus is installable in a vehicle and configured to receive electric power from a power transmission coil embedded in the ground. The power reception apparatus includes: a relay coil that is arranged on a tired wheel, which includes a tire and a wheel, and includes a first coil and a second coil; a power reception coil; and a power reception circuit. The first coil and the second coil are connected with each other by an electrical conductor. The first coil is arranged inside the tire. The second coil is located so that a distance from a central axis of the tired wheel to the second coil is shorter than a distance from the central axis to the first coil. The power reception coil is located so that when the first coil faces the power transmission coil, the power reception coil faces the second coil.
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Patent Agency Ranking
公开(公告)号：US20220037928A1
公开(公告)日：2022-02-03
申请号：US17503953
申请日：2021-10-18
Applicant: DENSO CORPORATION
Inventor： Masaya TAKAHASHI , Yuusei NAKAYASHIKI , Eisuke TAKAHASHI , Masaki KANESAKI , Kazuhiro UDA , Nobuhisa YAMAGUCHI
IPC: H02J50/12 , H02J50/90 , B60L53/122 , H02M1/12
Abstract: A contactless power supply device that supplies electric power to a vehicle in a contactless manner, includes: a power transmission resonance circuit; a power source circuit supplying direct-current power; and a power transmission circuit converting the direct-current power of the power source circuit into alternating-current power and supplying alternating-current power to the power transmission resonance circuit. The power transmission circuit includes: an inverter circuit converting the direct-current power of the power source circuit into alternating-current power; and a power transmission-side immittance conversion circuit adjusting the alternating-current power of the inverter circuit and supplies the adjusted alternating-current power to the power transmission resonance circuit. The ratio of a characteristic impedance of the power transmission-side immittance conversion circuit to an impedance backward on the power transmission resonance circuit side from the power transmission-side immittance conversion circuit is adjusted such that harmonic components in the alternating-current power of the inverter circuit becomes lessened.
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公开(公告)号：US20210391757A1
公开(公告)日：2021-12-16
申请号：US17460479
申请日：2021-08-30
Applicant: DENSO CORPORATION
Inventor： Takuya KIGUCHI , Nobuhisa YAMAGUCHI , Eisuke TAKAHASHI , Hayato SUMIYA , Tomoyuki FUJIKAWA , Koji MAZAKI , Shimpei TAKITA , Masaki KANESAKI , Masaya TAKAHASHI , Kazuhiro UDA , Yusei NAKAYASHIKI , Mitsuru SHIBANUMA , Kazuyoshi OBAYASHI
Abstract: A dynamic wireless power transfer system performs, through a plurality of primary coils installed along a traveling direction of a road and a secondary coil mounted in a vehicle, power transfer to the vehicle while the vehicle is traveling. The secondary coil is an M-phase coil including M coils, M denoting an integer which is two or higher. The M coils each include a coil end extending along a front-rear direction of the vehicle and a main coil portion extending along a width direction of the vehicle, the M coils each being configured such that a magnetic resistance of a magnetic path where a magnetic flux of the coil end passes is higher than a magnetic resistance of a magnetic path where a magnetic flux of the main coil portion passes.
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公开(公告)号：US20210143684A1
公开(公告)日：2021-05-13
申请号：US17150351
申请日：2021-01-15
Applicant: DENSO CORPORATION
Inventor： Hayato SUMIYA , Eisuke TAKAHASHI , Nobuhisa YAMAGUCHI , Kazuyoshi OBAYASHI , Shimpei TAKITA , Koji MAZAKI , Mitsuru SHIBANUMA , Masaki KANESAKI , Takuya KIGUCHI , Kazuhiro UDA
Abstract: A contactless power feeding apparatus includes a plurality of primary coils mounted on a road and a power feed controller which uses a portion of the primary coils as a power transmitting coil to achieve delivery of electrical power from the power transmitting coil to a secondary coil mounted in a vehicle. The power feed controller uses a selected primary coil that is one of the primary coils other than the power transmitting coil to decrease a leakage of magnetic flux arising from excitation of the power transmitting coil. Instead of the selected primary coil, the secondary coil may be used to reduce the leakage of magnetic flux.
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公开(公告)号：US20220032778A1
公开(公告)日：2022-02-03
申请号：US17505136
申请日：2021-10-19
Applicant: DENSO CORPORATION
Inventor： Masaki KANESAKI , Mitsuru SHIBANUMA , Hayato SUMIYA , Takuya KIGUCHI , Eisuke TAKAHASHI , Shinpei TAKITA , Masaya TAKAHASHI , Kazuhiro UDA , Yuusei NAKAYASHIKI , Kazuyoshi OBAYASHI , Nobuhisa YAMAGUCHI
IPC: B60L3/00 , B60R16/033
Abstract: In an in-motion power supply system with a plurality of power supply segments to supply power to a vehicle, a vehicle position detection unit detects a position of the vehicle relative to each segment. An electrical characteristic acquisition unit acquires electrical characteristics in the segment involved in power transfer, and an abnormality determination unit uses the electrical characteristics to determine whether there is an abnormality in the segment involved in power transfer. The abnormality determination unit shares the electrical characteristics between a subject segment subjected to abnormality determination and at least one of a previous segment previous to the subject segment and a subsequent segment subsequent to the subject segment, and compares the electrical characteristics in the subject segment with at least either the electrical characteristics in the previous segment or the electrical characteristics in the subsequent segment to determine whether the electrical characteristics in the subject segment are abnormal.
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公开(公告)号：US20210114465A1
公开(公告)日：2021-04-22
申请号：US17134636
申请日：2020-12-28
Applicant: DENSO CORPORATION
Inventor： Eisuke TAKAHASHI , Nobuhisa YAMAGUCHI , Koji MAZAKI , Shimpei TAKITA , Hayato SUMIYA , Masaki KANESAKI , Takuya KIGUCHI , Kazuhiro UDA , Mitsuru SHIBANUMA , Kazuyoshi OBAYASHI , Tomoyuki FUJIKAWA , Masaya TAKAHASHI , Yusei NAKAYASHIKI
Abstract: A contactless power supply system is provided for supplying electric power to a vehicle in a contactless manner during traveling of the vehicle. The contactless power supply system includes a plurality of primary coils installed along a traveling direction in a road and a secondary coil mounted to the vehicle. Each of the primary coils is a single-phase coil with the secondary coil being a multi-phase coil, or is a multi-phase coil with the secondary coil being a single-phase coil.
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