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

IPC: B60L53/12 ,  H02J50/12 ,  H02J50/50 ,  H02J50/00

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.

公开(公告)号：US20190241136A1

公开(公告)日：2019-08-08

申请号：US16387653

申请日：2019-04-18

Applicant: DENSO CORPORATION

Inventor： Daisuke KURODA ,  Shimpei TAKITA ,  Shingo KAWAHARA ,  Shunsuke TOMOTO

IPC: B60R16/033 ,  H02J7/14 ,  H02J7/00 ,  H01M10/44 ,  B60L58/10 ,  B60L50/50

CPC classification number: B60R16/033 ,  B60L50/50 ,  B60L58/10 ,  B60R16/02 ,  H01M10/441 ,  H01M2220/20 ,  H02J7/00 ,  H02J7/007 ,  H02J7/14 ,  H02J7/1423 ,  H02J7/1446

Abstract: A power supply apparatus includes a storage battery and supplies a voltage from the battery to an electric load. The power supply apparatus includes first and second energizing paths connected in parallel between the battery and the load, a first switch making the first energizing path conductive and interrupting the first energizing path, and a second switch making the second energizing path conductive and interrupting the second energizing path. The power supply apparatus includes a first drive circuit that operates when a voltage is supplied and drives the first switch, a second drive circuit that operates when a voltage is supplied and drives the second switch into a conductive state in a case where the first switch is driven into a conductive state by the first drive circuit, first and second supply paths respectively supplying a voltage to the first and second drive circuits.

公开(公告)号：US20190252908A1

公开(公告)日：2019-08-15

申请号：US16395726

申请日：2019-04-26

Applicant: DENSO CORPORATION

Inventor： Shimpei TAKITA ,  Yamato UTSUNOMIYA ,  Shunsuke TOMOTO

IPC: H02J7/14

CPC classification number: H02J7/1423 ,  B60R16/02 ,  B60R16/03 ,  B60R16/033 ,  H02H7/00 ,  H02J7/00

Abstract: A power supply control apparatus is applied to a power supply system that includes an opening and closing unit that has a plurality of switches that are connected in series on an energization path over which energization from a voltage source is performed and a plurality of diodes that are respectively connected in parallel to the plurality of switches, in which the plurality of diodes include diodes that are arranged in opposite directions to each other. The power supply control apparatus includes a determining unit determining that an abnormal state has occurred in which a current is flowing to any of the plurality of diodes in a state in which the plurality of switches are turned off, and a control unit controlling the switch that is connected in parallel to the diode through which the current is flowing to an on-state, when the abnormal state is determined to have occurred.

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

IPC: H02J50/40 ,  H02J50/10 ,  H01F27/36 ,  H01F27/245 ,  B60L5/42 ,  E01F11/00

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.

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

IPC: H02J50/70 ,  H02J50/90 ,  H02J50/00 ,  H02J50/40

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.

公开(公告)号：US20240072579A1

公开(公告)日：2024-02-29

申请号：US18383654

申请日：2023-10-25

Applicant: DENSO CORPORATION

Inventor： Shimpei TAKITA ,  Eisuke TAKAHASHI ,  Nobuhisa YAMAGUCHI ,  Yusei NAKAYASHIKI

IPC: H02J50/40 ,  H02J50/00 ,  H02J50/12 ,  H02J50/70

CPC classification number: H02J50/402 ,  H02J50/005 ,  H02J50/12 ,  H02J50/70

Abstract: A coil assembly for wireless electrical power transmission includes a plurality of external connecting terminals, a power feeding coil, a resonant capacitor electrically connecting with the power feeding coil, and busbars each of which electrically connects between the external connecting terminals.

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

IPC: B60L9/00 ,  H02J50/12 ,  H02J50/40

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.