公开(公告)号：US20210006195A1

公开(公告)日：2021-01-07

申请号：US16876643

申请日：2020-05-18

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yoshihiko MAEDA ,  Hisazumi WATANABE ,  Yuji AOKI ,  Akitaka YOSHIKAWA

IPC: H02P29/024 ,  H02P27/08 ,  H02M7/5387 ,  B60L53/20 ,  B60L15/20

Abstract: A vehicle driving device includes an inverter which drives a motor. The inverter includes: a three-phase bridge circuit including a plurality of switching elements; a three-phase short circuit which short-circuits three phases of the motor via the three-phase bridge circuit; and a control circuit. The control circuit includes: a microprocessor which drives the three-phase bridge circuit; a malfunction notification circuit which outputs a malfunction notification signal when the microprocessor is malfunctioning; and a latch circuit which holds the malfunction notification signal outputted from the malfunction notification circuit. The control circuit outputs a three-phase short-circuit drive signal which drives the three-phase short circuit, based on the malfunction notification signal held by the latch circuit.

公开(公告)号：US20230311728A1

公开(公告)日：2023-10-05

申请号：US18333321

申请日：2023-06-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshihiko MAEDA

IPC: B60N2/56

CPC classification number: B60N2/5657 ,  B60N2/565 ,  B60N2/5678

Abstract: A vehicle seat air-conditioning device includes: a blower that is included in a seat; at least one of an inlet duct or an outlet duct, the inlet duct being a duct through which air is led to be drawn in from a surface of the seat by the blower, and the outlet duct being a duct through which the air led by the blower is discharged from a surface of the seat; and a controller that is electrically connected to the blower. The blower includes a current detection circuit that detects a current consumption of the blower. The controller determines whether an occupant is sitting on the seat, based on the current consumption detected by the current detection circuit.

公开(公告)号：US20170237382A1

公开(公告)日：2017-08-17

申请号：US15583605

申请日：2017-05-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshinori HAYASHI ,  Hoshihito OKADA ,  Yoshihiko MAEDA ,  Yoichi ENOMOTO ,  Hiroshi TAKAO

IPC: H02P29/024 ,  B60L15/00 ,  H02P6/14 ,  B60L11/18 ,  H02M7/539 ,  H02M1/084

CPC classification number: H02P29/024 ,  B60L3/0069 ,  B60L11/1803 ,  B60L15/007 ,  B60L2200/12 ,  B60L2210/44 ,  B60Y2200/91 ,  H02M1/084 ,  H02M7/539 ,  H02P6/04 ,  H02P6/14 ,  H02P27/06 ,  Y02T10/642

Abstract: A motor driving circuit has a supply line connected to a DC power source, an inverter whose input side is connected to the supply line and whose output side is connected to a motor, a power switch inserted in the supply line for switching the supply line between conducting and cut-off states, a voltage detector for detecting a voltage between the direct-current power source and the power switch, and an insulation resistance detector for first detecting, based on a result of detection by the voltage detector with the power switch in the cut-off state, an insulation resistance on the preceding-stage side of the power switch and subsequently detecting, based on a result of detection by the voltage detector with the power switch in the conducting state, an insulation resistance on the succeeding-stage side of the power switch.

公开(公告)号：US20160181965A1

公开(公告)日：2016-06-23

申请号：US15056665

申请日：2016-02-29

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yoshinori HAYASHI ,  Hoshihito OKADA ,  Yoshihiko MAEDA ,  Yoichi ENOMOTO ,  Hiroshi TAKAO

IPC: H02P27/06 ,  H02P6/04 ,  H02P6/14

CPC classification number: H02P29/024 ,  B60L3/0069 ,  B60L11/1803 ,  B60L15/007 ,  B60L2200/12 ,  B60L2210/44 ,  B60Y2200/91 ,  H02M1/084 ,  H02M7/539 ,  H02P6/04 ,  H02P6/14 ,  H02P27/06 ,  Y02T10/642

Abstract: A motor driving circuit has a supply line connected to a DC power source, an inverter whose input side is connected to the supply line and whose output side is connected to a motor, a power switch inserted in the supply line for switching the supply line between conducting and cut-off states, a voltage detector for detecting a voltage between the direct-current power source and the power switch, and an insulation resistance detector for first detecting, based on a result of detection by the voltage detector with the power switch in the cut-off state, an insulation resistance on the preceding-stage side of the power switch and subsequently detecting, based on a result of detection by the voltage detector with the power switch in the conducting state, an insulation resistance on the succeeding-stage side of the power switch.

公开(公告)号：US20200186058A1

公开(公告)日：2020-06-11

申请号：US16703254

申请日：2019-12-04

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Junichi YUKAWA ,  Naoya IWASAKI ,  Hisazumi WATANABE ,  Yoshihiko MAEDA

IPC: H02P6/12 ,  H02P6/04 ,  H02P6/28 ,  B60L3/00

Abstract: A vehicle driving apparatus includes an inverter which drives a permanent magnet motor. The inverter includes a three-phase bridge circuit including a plurality of switch elements, a drive circuit connected to the three-phase bridge circuit, a control circuit connected to the drive circuit, and an abnormality detecting unit which detects abnormality of the inverter. The drive circuit includes a three-phase-short-circuit-forming circuit which causes three phases of the permanent magnet motor to form short circuits, an abnormality accepting terminal which accepts an abnormality signal output from the abnormality detecting unit, and a check terminal which accepts an active check signal for causing the three-phase-short-circuit-forming circuit to perform three-phase short circuit control.