公开(公告)号：US20230387723A1

公开(公告)日：2023-11-30

申请号：US18232690

申请日：2023-08-10

Applicant: DENSO CORPORATION

Inventor： Masaya TAKAHASHI ,  Mitsuru SHIBANUMA ,  Kazuyuki KATO ,  Yusei NAKAYASHIKI ,  Eisuke TAKAHASHI ,  Nobuhisa YAMAGUCHI

IPC: H02J50/12 ,  H02J50/90 ,  H02J50/40 ,  B60L53/39

CPC classification number: H02J50/12 ,  H02J50/90 ,  H02J50/40 ,  B60L53/39

Abstract: A wireless power transmission system is provided which wirelessly transfer electric power from a power transmitter to a power receiver. The wireless power transmission system works to set a capacitance of a primary capacitor of a primary resonant circuit to undergo resonance with a self-inductance of a primary coil at an angular frequency that is an operating frequency. A tertiary capacitor of a tertiary resonant circuit has a capacitance set to undergo resonance with a self-inductance of a tertiary coil. A secondary capacitor of a secondary resonant circuit has a capacitance set to reduce a reactive component of ac power arising from self-inductances and mutual inductances of the primary coil, the secondary coil, and the tertiary coil.

公开(公告)号：US20250105671A1

公开(公告)日：2025-03-27

申请号：US18974060

申请日：2024-12-09

Applicant: DENSO CORPORATION

Inventor： Masaya TAKAHASHI ,  Yusei NAKAYASHIKI ,  Mitsuru SHIBANUMA ,  Nobuhisa YAMAGUCHI

IPC: H02J50/12 ,  H02J50/70

Abstract: A power output circuit includes a plurality of circuit blocks that are provided in power wirings to which power is inputted and connected to each other side by side. Each of the plurality of circuit blocks includes at least a filter in a last post-stage. Each of the plurality of filters includes a reactor and a capacitor connected to the reactor at a node differing from an output node. Either of the reactor and the capacitor provided in each of the plurality of filters is connected to the power wirings in series so as to connect with the output node. A connection line between the reactor and the capacitor in one filter is connected to a connection line between the reactor and the capacitor in the remaining other filter.

公开(公告)号：US20250062646A1

公开(公告)日：2025-02-20

申请号：US18935885

申请日：2024-11-04

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Mitsuru SHIBANUMA ,  Kazuyoshi OBAYASHI ,  Nobuhisa YAMAGUCHI ,  Sungmin CHO ,  Katsuya KOBAYASHI ,  Toshiya HASHIMOTO

IPC: H02J50/90 ,  H02J7/00 ,  H02J50/12 ,  H02J50/40 ,  H02J50/80

Abstract: A wireless power transfer system comprises: a power conversion unit generating power to be transmitted to a power reception coil; a power transmission unit group constituted by two or more power transmission units, each power transmission unit having a power transmission circuit including a power transmission coil; a control unit controlling supply of power from the power conversion unit to the power transmission unit group; and a position detection unit detecting a position of a mobile body. The control unit, based on position information, supplies power from the power conversion unit to a power transmission unit group that satisfies a power transmission condition including that a distance of the power transmission coil relative to the power reception coil of the mobile body is less than or equal to a predetermined threshold, and does not supply power to a power transmission unit group that does not satisfy the power transmission condition.

公开(公告)号：US20240106276A1

公开(公告)日：2024-03-28

申请号：US18524755

申请日：2023-11-30

Applicant: DENSO CORPORATION

Inventor： Mitsuru SHIBANUMA ,  Eisuke TAKAHASHI ,  Masaya TAKAHASHI ,  Nobuhisa YAMAGUCHI ,  Kazuyuki KATO

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

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

Abstract: A wireless power supply system includes a plurality of power transmission units that receives and supplies power to a power receiving unit via the power transmission coil in a resonance state, and a switching control unit that switches a state of a first power transmission unit to a resonance state when the magnitude of the magnetic flux generated in a first power transmission coil of the first power transmission unit, which is one of the plurality of power transmission units, is greater than a predetermined threshold value, and switches to a non-resonance state when the magnitude is less than the threshold value. The threshold is set as a magnitude that exceeds the magnetic flux generated in the first power transmission coil due to coupling between the first power transmission coil and a second power transmission coil of a second power transmission unit, which is adjacent to first power transmission coil.

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.