公开(公告)号：US20190305583A1

公开(公告)日：2019-10-03

申请号：US16366104

申请日：2019-03-27

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yuki TANAKA ,  Ryosuke HASABA ,  Yoshio KOYANAGI ,  Kazuki KANAI

IPC: H02J7/34 ,  G05F1/67 ,  H02M3/04 ,  H02J7/00

Abstract: An energy harvest terminal includes a distribution circuit that distributes input radio wave power to at least two branch paths, a main rectification circuit that converts first radio wave power supplied to one of the at least two branch paths from the distribution circuit into DC output power, a DC-DC converter that performs voltage conversion on the DC output power of the main rectification circuit, a sub-rectification circuit that converts second radio wave power supplied to another of the at least two branch paths from the distribution circuit into DC output power, and an electricity storage device connected to an output of the DC-DC converter. The DC-DC converter performs a feedback control for equalizing an output voltage of the main rectification circuit and an output voltage of the sub-rectification circuit.

公开(公告)号：US20220006194A1

公开(公告)日：2022-01-06

申请号：US17479460

申请日：2021-09-20

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kazuki KANAI ,  Yuki TANAKA ,  Ryosuke HASABA ,  Haruo HAYAKAWA ,  Yoshio KOYANAGI

IPC: H01Q9/04 ,  H01Q1/27

Abstract: A microstrip antenna includes a first metal layer that constitutes an antenna element, a second metal layer that constitutes a ground, and a flexible member that separates the first metal layer and the second metal layer by a predetermined distance. The first metal layer and the second metal layer each are made of a metal or a metal foil. At least one of the first metal layer and the second metal layer is not adhered to the flexible member but is in close contact with the flexible member by a close contact unit. The close contact unit is a clamping mechanism including a first plate, a second plate, and a connecting member. The first plate and the second plate are connected to each other by the connecting member. The connecting member is an elastic body.

公开(公告)号：US20180215277A1

公开(公告)日：2018-08-02

申请号：US15746327

申请日：2016-05-27

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Futoshi DEGUCHI ,  Yoshio KOYANAGI ,  Kazuhiro EGUCHI ,  Katsuya OKAMOTO ,  Ryosuke HASABA

IPC: B60L11/18 ,  H02J50/12 ,  H02J50/50

CPC classification number: B60L53/31 ,  B60L53/12 ,  B60L2200/32 ,  B63G8/001 ,  B63H19/00 ,  H02J7/025 ,  H02J50/12 ,  H02J50/40 ,  H02J50/50 ,  H04B5/0037 ,  Y02T10/7005

Abstract: A power transmission device is configured to transmit power underwater to an underwater vehicle having a power reception coil. The power transmission device includes a power transmission coil configured to transmit power to the power reception coil through a magnetic field, a power transmission unit configured to transmit an alternating current voltage having a frequency a 10 kHz or lower to the power transmission coil, and a first capacitor connected to the power transmission coil and configured to form a resonance circuit resonating at the frequency with the power transmission coil.

公开(公告)号：US20180183256A1

公开(公告)日：2018-06-28

申请号：US15827392

申请日：2017-11-30

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yuki TANAKA ,  Ryosuke HASABA ,  Yoshio KOYANAGI

IPC: H02J7/00 ,  H02M1/00 ,  H02J50/20 ,  G06K7/10

CPC classification number: H02J7/0068 ,  G06K7/10158 ,  G06K19/0708 ,  H02J50/20 ,  H02M1/00 ,  H02M3/04 ,  H02M7/02 ,  H02M2001/0009

Abstract: A terminal includes an RF-DC conversion circuit outputting DC current by converting AC current received via wireless communication into DC current, a DC-DC converter connected to an output side of RF-DC conversion circuit to convert a voltage of DC current output from RF-DC conversion circuit to a predetermined voltage, and a controller controlling connection and disconnection between RF-DC conversion circuit and DC-DC converter. Controller acquires open circuit voltage Vin_oc on an output side of RF-DC conversion circuit, which is obtained when RF-DC conversion circuit and DC-DC converter are disconnected from each other, and target voltage αVin_oc (0

公开(公告)号：US20210305846A1

公开(公告)日：2021-09-30

申请号：US17264203

申请日：2019-06-07

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Ryosuke HASABA ,  Kazuhiro EGUCHI ,  Yoshio KOYANAGI ,  Katsuya OKAMOTO ,  Souichi KAWATA ,  Tatsuo YAGI

IPC: H02J50/12 ,  H01F27/28 ,  H01F27/24

Abstract: A power receiving device is disposed underwater. The power receiving device includes a housing formed of a weak magnetic material, a ferromagnetic body that surrounds an outer side of the housing and is formed of a ferromagnetic material, and a power receiving coil wound around an outer side of the ferromagnetic body.

公开(公告)号：US20190288399A1

公开(公告)日：2019-09-19

申请号：US16298076

申请日：2019-03-11

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yuki TANAKA ,  Ryosuke HASABA ,  Yoshio KOYANAGI ,  Kazuki KANAI

IPC: H01Q13/16 ,  H01Q1/48

Abstract: An antenna device includes a substrate having a ground conductor, an antenna conductor disposed approximately parallel with the ground conductor with an air layer or a dielectric layer, plural short-circuiting conductors that connect the antenna conductor to the ground conductor, and a feed conductor disposed in a vicinity of one of the plural short-circuiting conductors and that feeds the antenna conductor with power. When a wavelength of frequency used in the antenna device is represented by λ, an outer circumferential length of the slot is approximately 1λ to 2λ and a width of the slot is 0.005λ to 0.05λ, an interval between the plural short-circuiting conductors is shorter than or equal to λ/2, and a distance between the antenna conductor and the ground conductor is 0.005λ to 0.05λ.