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：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.