公开(公告)号：US20220337239A1

公开(公告)日：2022-10-20

申请号：US17633160

申请日：2020-10-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yusuke KINOSHITA ,  Hidetoshi ISHIDA ,  Hiroyuki HANDA ,  Yuji KUDOH ,  Satoshi NAKAZAWA

IPC: H03K17/687 ,  G01R31/26

Abstract: A switch system includes a bidirectional switch, a first gate driver circuit, a second gate driver circuit, a control unit, a first decision unit, and a second decision unit. The bidirectional switch includes a first source, a second source, a first gate, and a second gate. The first decision unit determines, based on a voltage at the first gate and a first threshold voltage, a state of the first gate in a first period in which a signal to turn OFF the first gate is output from the control unit to the first gate driver circuit. The second decision unit determines, based on a voltage at the second gate and a second threshold voltage, a state of the second gate in a second period in which a signal to turn OFF the second gate is output from the control unit to the second gate driver circuit.

公开(公告)号：US20210031789A1

公开(公告)日：2021-02-04

申请号：US16980222

申请日：2019-03-13

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yuta MORIURA ,  Yoshitaka NAKAMURA ,  Yasufumi KAWAI ,  Hiroyuki HANDA ,  Yohei MORISHITA ,  Toru OKINO ,  Hiroyuki HAGINO ,  Toru SAKURAGAWA ,  Satoshi MORISHITA

IPC: B60W50/00 ,  B60N2/02 ,  A61B5/11 ,  A61M21/02 ,  B60H3/00 ,  B60H1/00 ,  A61B5/16 ,  B60W50/14 ,  A61M21/00 ,  A61B5/024

Abstract: A travel sickness estimation system includes an estimation unit and an output unit. The estimation unit is configured to perform estimation processing of estimating, based on person information indicating conditions of a person who is on board a moving vehicle, whether or not the person is in circumstances that would cause travel sickness for him or her. The output unit is configured to output a result of the estimation processing performed by the estimation unit.

公开(公告)号：US20180212509A1

公开(公告)日：2018-07-26

申请号：US15925104

申请日：2018-03-19

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Takahiro UEHARA ,  Takuya ISHII ,  Hiroyuki HANDA ,  Atsushi KITAGAWA ,  Takeshi TANAKA

IPC: H02M1/08 ,  H03K17/12

CPC classification number: H03K17/64 ,  H02M2001/0009 ,  H03K17/122 ,  H03K17/127

Abstract: A switching circuit includes: a drive power supply; a first transistor and a second transistor; a drive signal source; and a drive circuit. Each of the first transistor and the second transistor includes: a drain electrode and a source electrode in which a main current flows when a corresponding one of the first transistor and the second transistor is ON; a first source terminal for passing the main current; and a second source terminal. Here, the first source terminal is connected to the source electrode at an impedance lower than an impedance of the second source terminal.

公开(公告)号：US20220069699A1

公开(公告)日：2022-03-03

申请号：US17404229

申请日：2021-08-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Junichi YUKAWA ,  Zenyou TEI ,  Hiroyuki HANDA ,  Hideki NAKATA

IPC: H02M1/32 ,  H02M7/217

Abstract: A power converter according to the present disclosure includes a cooling plate and a plurality of circuit elements. The cooling plate includes a first cooling surface and a second cooling surface on an opposite side from the first cooling surface. The cooling plate is provided with a through hole passing through between the first and second cooling surfaces. The circuit elements convert AC power supplied from an external power source into DC power of a certain voltage and output the DC power. The circuit elements at least include first and second circuit elements. The first circuit element includes a first terminal and is thermally connected to the first cooling surface. The second circuit element includes a second terminal electrically connected to the first terminal and inserted into the through hole, and is thermally connected to the second cooling surface.

公开(公告)号：US20190149148A1

公开(公告)日：2019-05-16

申请号：US16226081

申请日：2018-12-19

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Takahiro UEHARA ,  Takuya ISHII ,  Hiroyuki HANDA ,  Atsushi KITAGAWA ,  Takeshi TANAKA

IPC: H03K17/64 ,  H03K17/12

CPC classification number: H03K17/64 ,  H02M2001/0009 ,  H03K17/122 ,  H03K17/127

Abstract: A switching circuit includes: a drive power supply; a first transistor and a second transistor; a drive signal source; and a drive circuit. Each of the first transistor and the second transistor includes: a drain electrode and a source electrode in which a main current flows when a corresponding one of the first transistor and the second transistor is ON; a first source terminal for passing the main current; and a second source terminal. Here, the first source terminal is connected to the source electrode at an impedance lower than an impedance of the second source terminal.