公开(公告)号：US20190245525A1

公开(公告)日：2019-08-08

申请号：US16267657

申请日：2019-02-05

Applicant: DENSO CORPORATION

Inventor： Masaki KANESAKI ,  Nobuhisa YAMAGUCHI ,  Shoichi TAKEMOTO

IPC: H03K3/02 ,  H02M3/156

CPC classification number: H03K3/02 ,  H02M3/156

Abstract: A pulse power source apparatus that supplies a drive power to a pulse load circuit that periodically generates pulse current constituted of one or more consecutive pulses from the drive power. The pulse power source apparatus includes a DC voltage generation unit generating DC output voltage supplied to the pulse load circuit, and a pulse load drive signal generation unit generating a drive signal that drives the pulse load circuit to generate the pulse current. The DC output voltage which has dropped due to output of the pulse current is controlled such that a timing at which the DC output voltage reaches a reference potential corresponds to a timing at which a subsequent pulse current is generated, the reference potential being a potential capable of generating the pulse.

公开(公告)号：US20250149924A1

公开(公告)日：2025-05-08

申请号：US19011934

申请日：2025-01-07

Applicant: DENSO CORPORATION

Inventor： Yusei NAKAYASHIKI ,  Masaya TAKAHASHI ,  Nobuhisa YAMAGUCHI

IPC: H02J50/12 ,  H02J50/40

Abstract: A power transmission device for supplying electric power wirelessly to a power reception device equipped with a power reception coil includes a power transmission resonance circuit equipped with a power transmission coil and a power transmission resonance capacitor connected in parallel therewith, a tertiary resonance circuit, and a power transmission control unit that controls the tertiary resonance switching element. The tertiary resonance circuit includes a tertiary coil, a tertiary resonance capacitor connected in parallel therewith, and a tertiary resonance switching element connected in parallel with the tertiary coil. The tertiary resonance switching element is operable to switch between an open state and a short-circuited state of the tertiary resonance switching element. When making a switch from an energized state to a standby state, the power transmission control unit short-circuits the tertiary resonance switching element to place the tertiary coil and the tertiary resonance capacitor in a non-resonance state.

公开(公告)号：US20250145044A1

公开(公告)日：2025-05-08

申请号：US18726238

申请日：2023-02-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

Inventor： Kazutaka KIMURA ,  Toshiya HASHIMOTO ,  Makoto HASHIMOTO ,  Masaki KANESAKI ,  Keisuke TANI ,  Nobuhisa YAMAGUCHI ,  Kazuyoshi OBAYASHI ,  Yuichi TAKEMURA

IPC: B60L53/66 ,  B60L53/126 ,  B60L53/68

Abstract: A noncontact power supply system is provided with a mobile unit, a ground power supply apparatus configured to be able to supply power by noncontact to the mobile unit and a server configured to be able to communicate with the mobile unit and the ground power supply apparatus respectively. The server is configured to set a system utilization price of the noncontact power supply system based on the demand for power and, when an intent by the mobile unit for utilization of the noncontact power supply system at the system utilization price is confirmed, enable the mobile unit with a confirmed intent for utilization to be supplied with power by noncontact by sending information necessary for noncontact power supply to the mobile unit with a confirmed intent for utilization and ground power supply apparatus.

公开(公告)号：US20250100395A1

公开(公告)日：2025-03-27

申请号：US18727997

申请日：2022-11-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

Inventor： Kazutaka KIMURA ,  Toshiya HASHIMOTO ,  Makoto HASHIMOTO ,  Kazuyoshi OBAYASHI ,  Keisuke TANI ,  Nobuhisa YAMAGUCHI ,  Masaki KANESAKI ,  Yuichi TAKEMURA

IPC: B60L50/53 ,  B60L50/40 ,  B60L50/51 ,  B60L53/12 ,  B60L58/12

Abstract: A vehicle includes: a wireless power receiver that receives power in a wireless manner from a plurality of wireless power transmitters arranged at predetermined intervals in a vehicle traveling direction on a traveling path; a rotating electric machine capable of generating driving force for traveling; an inverter that exchanges power with the rotating electric machine; a first power supply; a second power supply having higher output density and lower capacity density than the first power supply; and a DC-DC converter that exchanges power with the second power supply. Further, the wireless power receiver, the inverter, the DC-DC converter, and the first power supply are electrically connected in parallel to a power bus that supplies the power from the wireless power receiver to the inverter, and the second power supply and the power bus are electrically connected via the DC-DC converter.

公开(公告)号：US20240097496A1

公开(公告)日：2024-03-21

申请号：US18522429

申请日：2023-11-29

Applicant: DENSO CORPORATION

Inventor： Yusei NAKAYASHIKI ,  Masaya TAKAHASHI ,  Nobuhisa YAMAGUCHI ,  Eisuke TAKAHASHI

IPC: H02J50/12 ,  B60L53/122 ,  B60L53/62 ,  H02J50/90

CPC classification number: H02J50/12 ,  B60L53/122 ,  B60L53/62 ,  H02J50/90

Abstract: A power supply system includes: a power transmission circuit provided on the ground side; a high frequency generation circuit that supplies high-frequency electric power to the power transmission circuit; a measurement unit that measures a physical quantity corresponding to the degree of coupling between the power transmission circuit and a power reception circuit provided in a vehicle; and a control unit. When the degree of coupling is determined, based on the measured physical quantity, to be lower than a predetermined degree, the control unit sets the impedance of the power transmission circuit to a first impedance and thereby sets the power transmission circuit to a non-resonant state. In contrast, when the degree of coupling is determined to be not lower than the predetermined degree, the control unit sets the impedance of the power transmission circuit to a second impedance and thereby sets the power transmission circuit to a resonant state.

公开(公告)号：US20220149665A1

公开(公告)日：2022-05-12

申请号：US17583926

申请日：2022-01-25

Applicant: DENSO CORPORATION

Inventor： Kazuyoshi OBAYASHI ,  Nobuhisa YAMAGUCHI

IPC: H02J50/12 ,  H02J50/50

Abstract: A power supplying device includes a power transmission circuit transmitting AC power and a power transmission resonance circuit including a power transmission coil. A power receiving device includes a power reception resonance circuit including a power reception coil. When a coupling coefficient between the power transmission coil and the power reception coil is a predetermined coupling coefficient, resonance of a first resonance mode having a first resonance frequency and a second resonance mode having a second resonance frequency are generated, a resonance frequency of the power transmission resonance circuit and the power reception resonance circuit is set to a value which is one of the first and second resonance frequencies, and the set value is a frequency deviating from a reference resonance frequency of the power transmission resonance circuit alone by a predetermined deviation frequency or more. A driving frequency of the AC power is set to the set value.

公开(公告)号：US20220085658A1

公开(公告)日：2022-03-17

申请号：US17535836

申请日：2021-11-26

Applicant: DENSO CORPORATION

Inventor： Mitsuru SHIBANUMA ,  Masaki KANESAKI ,  Nobuhisa YAMAGUCHI

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

Abstract: A period for performing pre-power-supply check prior to main power supply from a power supply device to a power reception device is provided and, a power-receiving-side controller is configured to: check a supplied electric power supplied from the power supply device to the power reception device, in a state where an effective value of an output voltage of a inverter circuit is fixed to a predetermined first voltage by the power-supply-side controller and an input voltage of the DC-DC converter is fixed to a predetermined second voltage by the power-receiving-side controller, in the pre-power-supply check, and cause, in response to the supplied electric power being equal to a predetermined electric power or more, the power supply device to start the main power supply.

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：US20150326031A1

公开(公告)日：2015-11-12

申请号：US14648503

申请日：2013-11-29

Applicant: DENSO CORPORATION

Inventor： Nobuhisa YAMAGUCHI ,  Akira SAKAMOTO ,  Kouji MAZAKI ,  Kouki NAGURA

IPC: H02J5/00

CPC classification number: H02J50/12 ,  B60L11/1812 ,  B60L11/182 ,  B60L2210/30 ,  B60L2210/40 ,  H02J7/0054 ,  H02J7/025 ,  H02J7/04 ,  H02J17/00 ,  H02J50/10 ,  H02J50/80 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T10/7241 ,  Y02T90/122 ,  Y02T90/127 ,  Y02T90/14

Abstract: A non-contact power supply apparatus includes a transmission-side pad, a transmission-side resonant circuit, a reception-side pad, a reception-side resonant circuit, a power transmission circuit, a power reception circuit, and a control circuit. The control circuit controls an alternating-current voltage supplied to the transmission-side pad and an alternating-current voltage supplied to the power reception circuit, so that a power factor of the alternating current supplied from the power transmission circuit to the transmission-side pad connected to the transmission-side resonant circuit and direct-current power supplied from the power supply circuit to an on-board battery are respectively set to target values. As a result, change in power factor can be suppressed even when the coupling coefficient of the transmission-side pad and the reception-side pad changes, and predetermined electric power can be transmitted.

Abstract translation: 非接触式电源装置包括发送侧焊盘，发送侧谐振电路，接收侧焊盘，接收侧谐振电路，电力传输电路，电力接收电路和控制电路。 控制电路控制提供给发送侧焊盘的交流电压和提供给电力接收电路的交流电压，使得从电力传输电路向发送侧衬垫提供的交流电的功率因数 连接到发送侧谐振电路和从电源电路向车载电池供给的直流电力分别设定为目标值。 结果，即使发送侧焊盘和接收侧焊盘的耦合系数发生变化，也能够抑制功率因数的变化，能够发送规定的电力。