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公开(公告)号：US20200169117A1
公开(公告)日：2020-05-28
申请号：US16612101
申请日：2018-05-10
Applicant: PANASONIC CORPORATION
Inventor： Katsuya OKAMOTO , Souichi KAWATA , Kazuhiro EGUCHI , Ryosuke HASABA , Yoshio KOYANAGI , Tamaki URA
Abstract: A power transmitting device transmits power tower power receiving device having a power receiving coil, in water. The power transmitting device includes one or more annular transmitting coils including a power transmitting coil configured to transmit the power to the power receiving coil via a magnetic field, a support member located in an inner space of the transmitting coil, which is formed by the annular transmitting coil, the support member including an outer periphery along an inner periphery of the annular transmitting coil, and supporting the transmitting coil from the inner space, a power transmitting unit configured to supply A/C power to the power transmitting coil, and a capacitor connected to the transmitting coil, and forming a resonance circuit resonating together with the transmitting coil.
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公开(公告)号：US20190334380A1
公开(公告)日：2019-10-31
申请号：US16344703
申请日：2017-09-05
Applicant: PANASONIC CORPORATION
Inventor： Yoshio KOYANAGI , Kazuhiro EGUCHI , Souichi KAWATA , Futoshi DEGUCHI , Katsuya OKAMOTO , Ryosuke HASABA , Tamaki URA
Abstract: An electric power transmission device capable of efficiently performing contactless electric power transmission to an underwater vehicle in water is provided. The electric power transmission device, which is an electric power transmission device transmitting electric power to an electric power reception device including an electric power reception coil in water, includes one or more transmission coils including an electric power transmission coil which transmits electric power to an electric power reception coil via a magnetic field, an electric power transmission unit which transmits AC power to an electric power transmission coil, a capacitor which is connected to the transmission coil and forms a resonant circuit which resonates with the transmission coil, and a buoyant body connected to at least one of the transmission coils.
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公开(公告)号：US20220368162A1
公开(公告)日：2022-11-17
申请号：US17763464
申请日：2020-09-25
Applicant: PANASONIC CORPORATION
Inventor： Katsuya OKAMOTO , Shuichiro YAMAGUCHI , Souichi KAWATA
Abstract: A power transmission coil includes a plurality of coil members each of which having a length capable of surrounding at least one power reception device located under water from all directions and that are configured to wirelessly transmit power to the power reception device. Each of the plurality of coil members includes a polygonal pipe having a polygonal shape in which a plurality of straight pipes are welded, and a conductive wire that is inserted into the polygonal pipe and is wound a plurality of times.
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Patent Agency Ranking
公开(公告)号：US20210166855A1
公开(公告)日：2021-06-03
申请号：US17173997
申请日：2021-02-11
Applicant: PANASONIC CORPORATION
Inventor： Kazuhiro EGUCHI , Ryosuke HASABA , Katsuya OKAMOTO , Souichi KAWATA , Yoshio KOYANAGI
Abstract: A transmission coil configured to transmit electric power in water includes an annular electric wire through which an alternating current flows, and a first cover which includes non-conductive resin or non-magnetic resin and seals a periphery of the electric wire. The electric wire transmits the electric power via a magnetic field generated by flowing of the alternating current. The first cover includes a second cover which surrounds an outer peripheral surface of the electric wire in a radial direction with the non-conductive resin or the non-magnetic resin, and a self-bonding tape configured to seal an outer peripheral surface of the second cover.
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公开(公告)号：US20190229557A1
公开(公告)日：2019-07-25
申请号：US16314139
申请日：2017-06-19
Applicant: PANASONIC CORPORATION
Inventor： Futoshi DEGUCHI , Souichi KAWATA , Kazuhiro EGUCHI , Katsuya OKAMOTO , Yoshio KOYANAGI , Ryosuke HASABA
Abstract: A power transmission device transmits power underwater to a power reception device including a power reception coil. The power transmission device includes: a power transmission coil that transmits power to the power reception coil through a magnetic field; a power transmitter that transmits an alternating current power having a predetermined frequency to the power transmission coil; and a first capacitor that is connected to the power transmission coil and forms a resonance circuit resonating with the power transmission coil. The predetermined frequency is a frequency between a first frequency at which a geometric mean value of a Q value of the power transmission coil and a Q value of the power reception coil are the maximum and a second frequency at which the Q value of the power transmission coil and the Q value of the power reception coil are the same.
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公开(公告)号：US20210273490A1
公开(公告)日：2021-09-02
申请号：US17324724
申请日：2021-05-19
Applicant: PANASONIC CORPORATION
Inventor： Katsuya OKAMOTO , Souichi KAWATA , Kazuhiro EGUCHI , Ryosuke HASABA , Yoshio KOYANAGI , Tamaki URA
Abstract: A power transmitting device transmits power to a power receiving device having a power receiving coil in water. The power transmitting device includes a power transmitting coil configured to transmit the power to the power receiving coil via a magnetic field. The power transmitting device also includes a support member that supports the power transmitting coil, and one or more spacers that hold the transmitting coil and the support member.
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公开(公告)号：US20200381162A1
公开(公告)日：2020-12-03
申请号：US16498964
申请日：2018-03-08
Applicant: PANASONIC CORPORATION
Inventor： Kazuhiro EGUCHI , Ryosuke HASABA , Katsuya OKAMOTO , Souichi KAWATA , Yoshio KOYANAGI
Abstract: Provided is a transmission coil which can inhibit reduction in transmission efficiency during underwater non-contact electric power transmission. A transmission coil configured to transmit electric power in water includes an annular electric wire through which an alternating current flows, and a first cover which includes non-conductive resin or non-magnetic resin and seals a periphery of the electric wire. The electric wire transmits the electric power via a magnetic field generated by flowing of the alternating current.
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公开(公告)号：US20200321810A1
公开(公告)日：2020-10-08
申请号：US16754640
申请日：2019-02-08
Applicant: PANASONIC CORPORATION
Inventor： Katsuya OKAMOTO , Souichi KAWATA , Kazuhiro EGUCHI , Yoshio KOYANAGI , Ryosuke HASABA
Abstract: An electric power transmission device transmits electric power to an electric power reception device including an electric power reception coil in water. The electric power transmission device includes one or more transmission coils which include an electric power transmission coil configured to transmit electric power to the electric power reception coil via a magnetic field, an electric power transmitter, configured to transmit AC power to the electric power transmission coil, a capacitor which is connected to the transmission coil and forms a resonance circuit which resonates with the transmission coil, a first tubular member which is waterproof and seals a periphery of the transmission coil, a second tubular member which surrounds the first tubular member and includes a plurality of holes, and an adjuster, configured to adjust an amount of air in a gap between the first tubular member and the second tubular member.
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