公开(公告)号：US20230078868A1

公开(公告)日：2023-03-16

申请号：US17801413

申请日：2021-01-07

Applicant: LS ELECTRIC CO., LTD.

Inventor： Jae Moon LEE ,  Tae Suk BAE

IPC: G01R1/20 ,  G01R31/327

Abstract: The present disclosure relates to a device and a method for diagnosing a failure of an inverter initial charging circuit. The device for diagnosing a failure of an initial charging circuit according to the present invention is advantageous as follows: it is possible to detect whether a relay of the initial charging circuit is malfunctioning or not by using a photocoupler connected in parallel with an initial charging resistor of the initial charging circuit, on the basis that, if a current flows through the initial charging resistor in a relay-on state, the photocoupler is turned on; and it is possible to prevent component failure or burnout from occurring due to a high current flowing through the initial charging resistor in the case of a relay failure.

公开(公告)号：US20240164041A1

公开(公告)日：2024-05-16

申请号：US18282931

申请日：2021-11-25

Applicant: LS ELECTRIC CO., LTD.

Inventor： Tae Suk BAE ,  Dong Sik KIM ,  Chun Suk YANG

IPC: H05K7/14 ,  H02M7/00

CPC classification number: H05K7/14324 ,  H02M7/003 ,  H05K7/14322

Abstract: An inverter device is provided. The inverter device according to an embodiment of the present disclosure may include: a main body housing in which an optional module is detachably installed and a first circuit module is disposed inside, and the inverter device may include an optional module installation portion; an opening portion formed in the optional module installation portion; and a connection member insertion portion disposed in the opening portion.