公开(公告)号：US20240243583A1

公开(公告)日：2024-07-18

申请号：US18574140

申请日：2022-07-01

Applicant: LG INNOTEK CO., LTD.

Inventor： Jeong Heum PARK ,  Kwang Soon JUNG

IPC: H02J3/38 ,  H02M1/00 ,  H02M3/158

CPC classification number: H02J3/381 ,  H02M1/0067 ,  H02M3/158 ,  H02J2300/26

Abstract: A power conversion device according to one embodiment of the present invention comprises: a plurality of converters comprising at least one upper switch and at least one lower switch, and respectively connected to a plurality of cell strings; and an auxiliary power supply unit for supplying driving power to each of the plurality of converters, wherein the auxiliary power supply unit comprises: a primary-side circuit for receiving the voltage of at least one output terminal from among output terminals of the plurality of cell strings; an insulation type converter for outputting voltage to first secondary-side circuits in accordance with the voltage of the primary-side circuit; and the plurality of first secondary-side circuits for supplying the driving power to each of the upper switch of the plurality of converters by using the voltage output from the insulation type converter, wherein the plurality of converters have a multi-level structure.

公开(公告)号：US20240170961A1

公开(公告)日：2024-05-23

申请号：US18283892

申请日：2022-03-25

Applicant: LG INNOTEK CO., LTD.

Inventor： Kwang Soon JUNG ,  Jeong Heum PARK

IPC: H02J1/08 ,  H02J1/10

CPC classification number: H02J1/082 ,  H02J1/106 ,  H02J2300/24

Abstract: A power conversion device according to one embodiment of the present invention comprises: a plurality of converters that is each connected to a plurality of cell strings; and an auxiliary power supply unit for supplying driving power to each of the plurality of converters, wherein the auxiliary power supply unit includes: a primary-side circuit for receiving the voltage of at least one output terminal from among output terminals of the plurality of cell strings; an insulation type converter for outputting voltage to secondary-side circuits according to the voltage of the primary-side circuit; and the plurality of secondary-side circuits for supplying the driving power to each of the plurality of converters by using the voltage output from the insulation type converter, wherein the plurality of converters have a multi-level structure.

公开(公告)号：US20230010263A1

公开(公告)日：2023-01-12

申请号：US17782255

申请日：2020-12-04

Applicant: LG INNOTEK CO., LTD.

Inventor： Jeong Heum PARK ,  Soo Hong KIM ,  Kwang Soon JUNG

IPC: H05K1/14 ,  H05K1/16 ,  H01F17/00 ,  H05K1/05

Abstract: A printed circuit board module comprises: a first printed circuit board; a second printed circuit board arranged on one surface of the first printed circuit board; a third printed circuit board arranged on the other surface of the first printed circuit board; and a core passing through the first printed circuit board to the third printed circuit board, wherein the second printed circuit board includes a first coil, the third printed circuit board includes a second coil, and the cross-sectional area of the second printed circuit board and the third printed circuit board is less than the cross-sectional area of the first printed circuit board.