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公开(公告)号：US20210313888A1
公开(公告)日：2021-10-07
申请号：US17266394
申请日：2019-08-20
Applicant: LG INNOTEK CO., LTD.
Inventor： Ju Young JANG , Soo Hong KIM , Jae Geun LEE
Abstract: According to an embodiment, disclosed is a DC-DC converter in a solar-linked system, the DC-DC converter including: an initial charging circuit which connects an inverter with a first node and is used for charging an inverter-side capacitor; an intermediate capacitor; and a switching circuit connected in parallel to the intermediate capacitor and composed of a first switch and a second switch that are connected in series, wherein the initial charging circuit applies a voltage to a first node according to a received control signal, and performs charging of a battery.
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公开(公告)号：US20230156964A1
公开(公告)日：2023-05-18
申请号：US17919321
申请日：2021-04-16
Applicant: LG INNOTEK CO., LTD.
Inventor： Yong Joo LEE , Mi Sun LEE , Ju Young JANG
CPC classification number: H05K7/20336 , H02M3/00 , H05K7/20936
Abstract: A heat sink according to one embodiment of the present invention comprises: a main heat sink; a heat pipe mounted in a groove formed on one surface of the main heat sink; a heat dissipation member which is formed above the heat pipe and transfers heat generated from a heat generation component to the heat pipe; and an elastic member which is mounted in a space formed inside the heat dissipation member and applies pressure to the main heat sink.
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公开(公告)号：US20240213918A1
公开(公告)日：2024-06-27
申请号：US18288619
申请日：2022-04-28
Applicant: LG INNOTEK CO., LTD.
Inventor： Dong Keun YOON , Ju Young JANG , Young Woo JEONG
IPC: H02S40/32 , G01R31/327 , H02J13/00 , H02S50/10
CPC classification number: H02S40/32 , G01R31/3277 , H02J13/00002 , H02S50/10
Abstract: A switching element operation detection device according to an embodiment of the present invention comprises: a first sensing unit for sensing current flowing through a driving circuit for driving a first switching element; a second sensing unit for sensing current flowing through a driving circuit for driving a second switching element; a first amplification unit for amplifying current sensed by the first sensing unit; a second amplification unit for amplifying current sensed by the second sensing unit; a first hysteresis unit for outputting a high signal or a low signal according to an output of the first amplifier; a second hysteresis unit for outputting a high signal or a low signal according to an output of the second amplifier; and a switching element operation detection signal output unit for outputting a switching element operation detection signal when both an output of the first hysteresis unit and an output of the second hysteresis unit are high signals.
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4.发明申请公开(公告)号：US20210320589A1
公开(公告)日：2021-10-14
申请号：US17271718
申请日：2018-12-17
Applicant: LG INNOTEK CO., LTD.
Inventor： Sang Gyu CHOI , Jeong Heum LEE , Ju Young JANG
Abstract: According to one embodiment, a DC-DC converter for compensating a ripple in a photovoltaic-linked energy storage system and a control method thereof are disclosed. Particularly, a DC-DC converter for compensating for a ripple generated in a DC link connecting a single-phase inverter to a converter is disclosed. The DC-DC converter can compensate a ripple by using an active power component or the average voltage of a DC link voltage acquired from the DC link.
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Patent Agency Ranking
公开(公告)号：US20230276603A1
公开(公告)日：2023-08-31
申请号：US18019698
申请日：2021-08-05
Applicant: LG INNOTEK CO., LTD.
Inventor： Sang Hun AN , Ju Young JANG , Seok Min JIN
CPC classification number: H05K7/20909 , H02M7/003 , H05K7/20154
Abstract: A power conversion device comprises: a housing having a space formed therein and including a first opening and a second opening; a fan coupled to the second opening and allowing air to flow in a first direction from the first opening toward the second opening; a first electronic component arranged in the space; a heat dissipation member arranged at the rear of the first electronic component with respect to a flow direction of air; a printed circuit board arranged on the heat dissipation member; and a second electronic component arranged under the printed circuit board to be in contact with the upper surface of the heat dissipation member.
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公开(公告)号：US20230198261A1
公开(公告)日：2023-06-22
申请号：US18108265
申请日：2023-02-10
Applicant: LG INNOTEK CO., LTD.
Inventor： Jeong Heum LEE , Soo Hong KIM , Ju Young JANG , Jeong Heum PARK
CPC classification number: H02J3/32 , H02M3/33584 , H02J7/00712 , H02H7/1213 , H02J7/06 , H02J2207/20
Abstract: A DC-DC converter including a bridge circuit unit electrically connected to a DC link capacitor and comprising at least one full bridge circuit comprising switching elements; a sensing unit for sensing a voltage between the bridge circuit unit and the DC link capacitor; and a control unit for controlling the bridge circuit unit according to the sensed voltage, wherein a power of one end of a battery is controlled to a droop curve-shaped power value according to the sensed voltage, wherein the DC-DC converter further comprises an inductor and a capacitor electrically connected to the bridge circuit unit, the inductor is connected to one end of a battery, the capacitor is connected to one end of the battery and a node on the other end of the battery, and the node is connected to and arranged between the inductor and the battery.
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公开(公告)号：US20210242830A1
公开(公告)日：2021-08-05
申请号：US17054294
申请日：2018-10-26
Applicant: LG INNOTEK CO., LTD.
Inventor： Ju Young JANG , Jeong Heum LEE , Ui Seon HWANG
Abstract: One embodiment discloses a DC-DC converter which, in a solar-related energy storage system, cuts-off the over-discharging of a battery, and a control method thereof. Specifically, disclosed are a DC-DC converter which protects a battery by appropriately switching between a sleep mode which minimizes battery consumption by maintaining only minimized functions and a cut-off mode which prevents the battery from over-discharging by physically cutting off a circuit connected to the battery, and a control method thereof.
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公开(公告)号：US20210234506A1
公开(公告)日：2021-07-29
申请号：US17054454
申请日：2018-08-17
Applicant: LG INNOTEK CO., LTD.
Inventor： Ju Young JANG , Jeong Heum LEE , Soo Hong KIM , Ui Seon HWANG
Abstract: One embodiment discloses a DC-DC converter which, in a solar-related energy storage system, cuts-off the over-discharging of a battery, and a control method thereof. Specifically, disclosed are a DC-DC converter which protects a battery by appropriately switching between a sleep mode which minimizes battery consumption by maintaining only minimized functions and a cut-off mode which prevents the battery from over-discharging by physically cutting off a circuit connected to the battery, and a control method thereof. Also, an embodiment discloses a DC-DC converter or reverse wiring protection device for between a solar panel and a battery. Specifically, disclosed is a DC-DC converter or reverse wiring protection device comprising: a reverse current pass circuit comprising a current sensor, a voltage sensor, a diode and a fuse; a breaker circuit which cuts-off the supply of power if reverse wiring is sensed by the current sensor or the voltage sensor; a capacitor which is connected in parallel to the reverse current pass circuit; and a switch which connects the reverse current pass circuit and the battery pack.
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公开(公告)号：US20200321880A1
公开(公告)日：2020-10-08
申请号：US16956897
申请日：2018-09-04
Applicant: LG INNOTEK CO., LTD.
Inventor： Jeong Heum LEE , Soo Hong KIM , Ju Young JANG , Jeong Heum PARK
Abstract: A DC-DC converter includes a bridge circuit electrically connected to a DC link capacitor; an inductor and a capacitor electrically connected to the bridge circuit, in which the inductor is connected to a first end of a battery, and the capacitor is connected to the first end and a second end of the battery; a sensor configured to sense a voltage between the bridge circuit and the DC link capacitor; and a controller configured to control switching operations of the bridge circuit so that a power output by the DC-DC converter and supplied to the first end of the battery has a droop curve-shaped power value according to the sensed voltage.
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