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公开(公告)号：EP4005832A1
公开(公告)日：2022-06-01
申请号：EP20848123.4
申请日：2020-07-07
发明人： SUMIYA, Hayato , TAKAHASHI, Eisuke , YAMAGUCHI, Nobuhisa , TAKAHASHI, Masaya , FUJIMOTO, Hiroshi , SHIMIZU, Osamu
摘要： A dynamic wireless power transfer system (500) includes: a power transmission coil (40) that is provided in a road (105); a power transmission circuit (30) that supplies electric power to the power transmission coil; a power reception coil (240, 240r) that is provided in a vehicle (202); a power reception circuit (230) that is connected to the power reception coil; and a relay circuit (70) that transfers electric power between the power transmission coil and the power reception coil in a contactless manner.
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公开(公告)号：EP3958437A1
公开(公告)日：2022-02-23
申请号：EP20791455.7
申请日：2020-03-11
申请人： Denso Corporation
发明人： KANESAKI, Masaki , SHIBANUMA, Mitsuru , SUMIYA, Hayato , KIGUCHI, Takuya , TAKAHASHI, Eisuke , TAKITA, Shinpei , TAKAHASHI, Masaya , UDA, Kazuhiro , NAKAYASHIKI, Yuusei , OBAYASHI, Kazuyoshi , YAMAGUCHI, Nobuhisa
摘要： An in-motion power supply system 100 includes a plurality of power supply segments SGs configured to supply power to a vehicle 202, a vehicle position detection unit 20 configured to detect a position of the vehicle relative to each segment, an electrical characteristic acquisition unit 50 configured to acquire electrical characteristics in the segment involved in power transfer, and an abnormality determination unit 54 configured to use 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 SGt subjected to abnormality determination and at least one of a previous segment SGb previous to the subject segment and a subsequent segment SGa 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：EP4349635A1
公开(公告)日：2024-04-10
申请号：EP22815711.1
申请日：2022-03-31
申请人： DENSO CORPORATION
IPC分类号： B60L5/00 , H02J50/12 , H02J50/90 , B60L53/122 , B60M7/00
摘要： A power supply system (100) includes: a power transmission circuit (40) which includes a power transmission coil (41) provided on the ground side and a power-transmission-side capacitor (43), and whose impedance is switchable between a first impedance and a second impedance that is lower than the first impedance; a high frequency generation circuit (30) that supplies high-frequency electric power to the power transmission circuit; a measurement unit (21) that measures a physical quantity corresponding to the degree of coupling between the power transmission circuit and a power reception circuit that includes a power reception coil provided in a vehicle; and a control unit (20) that performs transmission of electric power from the power transmission circuit to the power reception circuit such that the power transmission circuit is set to a first state, in which the impedance of the power transmission circuit is set to the first impedance, when the degree of coupling is determined, based on the measured physical quantity, to be lower than a predetermined degree, and set to a second state, in which the impedance of the power transmission circuit is set to the second impedance, when the degree of coupling is determined, based on the measured physical quantity, to be higher than or equal to the predetermined degree.
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公开(公告)号：EP4297240A1
公开(公告)日：2023-12-27
申请号：EP22755919.2
申请日：2022-02-01
申请人： DENSO CORPORATION
发明人： TAKAHASHI, Masaya , SHIBANUMA, Mitsuru , KATO, Kazuyuki , NAKAYASHIKI, Yusei , TAKAHASHI, Eisuke , YAMAGUCHI, Nobuhisa
摘要： A primary-side resonant circuit (110) of a power transmission apparatus (100) has an impedance varying element that increases, when supply of electric power is stopped, an input impedance of the primary-side resonant circuit so as to have predetermined standby current flowing through a primary-side coil (112). A power reception apparatus (200) includes a magnetic flux amplifier circuit (220) configured to amplify magnetic flux generated by the standby current flowing through the primary-side coil of the primary-side resonant circuit. The power transmission apparatus further includes a primary-side detection circuit (120) configured to detect a change in the voltage of the primary-side coil, a change in electric current flowing through the primary-side coil or a change in a magnetic field in the vicinity of the primary-side coil; each of the changes is caused by the magnetic flux amplified by the magnetic flux amplifier circuit.
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公开(公告)号：EP4007119A1
公开(公告)日：2022-06-01
申请号：EP20844318.4
申请日：2020-07-03
申请人： Denso Corporation
摘要： A contactless power feeding device (100) that supplies electric power to a power receiving device (200) without contact includes: a power transmitting circuit (130) that transmits alternating-current power; and a power transmitting resonator including a power transmitting coil (112). The input impedance of the power transmitting resonator is set low in a facing state in which a power receiving coil (212) included in the power receiving device (200) faces the power transmitting coil, and the input impedance of the power transmitting resonator is set high in a non-facing state in which the power receiving coil does not face the power transmitting coil.
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公开(公告)号：EP4350947A1
公开(公告)日：2024-04-10
申请号：EP22815650.1
申请日：2022-03-23
申请人： DENSO CORPORATION
发明人： SHIBANUMA, Mitsuru , TAKAHASHI, Eisuke , TAKAHASHI, Masaya , YAMAGUCHI, Nobuhisa , KATO, Kazuyuki
摘要： A wireless power supply system (100) that wirelessly supplies power to a mobile body (200) including a power receiving unit (280) includes an AC power supply unit (20) and a plurality of power transmission units (80), the plurality of power transmission units are disposed in at least a part of a moving range of the moving body and include a power transmission coil (81). The wireless power supply system includes a plurality of power transmission units that receive a supply of power from the AC power supply unit and supply 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 (80a) to a resonance state when the magnitude of the magnetic flux generated in a first power transmission coil (81a) 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 a coupling between the first power transmission coil and a second power transmission coil (81b) of a second power transmission unit (80b), which is adjacent to the first power transmission coil.
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公开(公告)号：EP4316895A1
公开(公告)日：2024-02-07
申请号：EP22774873.8
申请日：2022-02-24
申请人： DENSO CORPORATION
IPC分类号： B60L5/00 , H02J50/12 , B60L53/122 , B60M7/00
摘要： A power transmission apparatus (100) that supplies power to a power reception apparatus (200) without contact therebetween includes: a power conversion unit (20) that outputs an alternating-current voltage; a power transmission unit (80) that has a power transmission coil (81) and a capacitor (82) that is connected to the power transmission coil (81); a transmission line (70) that connects the power conversion unit and the power transmission unit; and a compensator (60) that is disposed between the power conversion unit and the transmission line. The compensator includes: an inductive reactance element (61) that has an inductive reactance that is greater than an inductive reactance of the transmission line; and a capacitor (62) that reduces an inductive reactance that is a sum of the inductive reactance of the transmission line and the inductive reactance of the inductive reactance element, in which the inductive reactance element and the capacitor are connected.
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