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：US20240090114A1

公开(公告)日：2024-03-14

申请号：US18273173

申请日：2022-01-04

Applicant: LS ELECTRIC CO., LTD.

Inventor： Jae Moon LEE

IPC: H05K1/02 ,  H05K1/18 ,  H05K7/20

CPC classification number: H05K1/0201 ,  H05K1/18 ,  H05K7/20909 ,  H05K7/20927 ,  H05K2201/10901 ,  H05K2201/2045

Abstract: The present disclosure relates to an inverter module comprising: a power module coupled to a PCB; a thermal pad positioned between the PCB and the power module to prevent foreign substances from being attached to the PCB and the power module and to conduct heat; and a cooling device including a heat sink attached to the power module to cool the power module.