公开(公告)号：US20220001753A1

公开(公告)日：2022-01-06

申请号：US17476073

申请日：2021-09-15

Applicant: DENSO CORPORATION

Inventor： Eisuke TAKAHASHI ,  Hayato SUMIYA ,  Takuya KIGUCHI ,  Nobuhisa YAMAGUCHI

IPC: B60L50/16 ,  B60L53/12 ,  H02J50/12

Abstract: A system for power feeding during traveling includes a coil for power transmission, a power supply unit which supplies power to the coils, at least one shielding member which shields an electromagnetic field of the coil, and a hole provided to the shielding members.

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

IPC: B60L53/12 ,  H02J50/12 ,  H02J50/40 ,  H02J50/90 ,  B60L53/60 ,  G01R31/52

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.

公开(公告)号：US20180212510A1

公开(公告)日：2018-07-26

申请号：US15855168

申请日：2017-12-27

Applicant: DENSO CORPORATION

Inventor： Masaya TAKAHASHI ,  Eisuke TAKAHASHI ,  Takuya KIGUCHI

IPC: H02M1/08 ,  H02M7/5387 ,  H02J7/00

CPC classification number: H02M1/083 ,  H02J7/0065 ,  H02M7/53871 ,  H02M2001/0058 ,  H02M2007/4815 ,  H02P27/08

Abstract: A power conversion device has a main switch connected to a positive electrode side line of a battery, at least one semiconductor power element connected between the main switch and a negative electrode voltage line, and an auxiliary circuit having an auxiliary switch, a resonance reactor and an auxiliary diode connected parallel to the main switch. The device further has a voltage detection part which detects an external side voltage of the main switch and a control circuit part performing a switching control of the main switch and the auxiliary switch based on the detection result of the voltage detection part. During the turned-off state of the main switch, the control circuit part turns off the auxiliary switch before the external side voltage of the main switch reaches an input voltage of the main switch. This external side voltage starts to increase when the auxiliary switch is turned on.

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：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.

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.