Patents by Inventor Ju Young JANG
Ju Young JANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11979111Abstract: 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.Type: GrantFiled: October 26, 2018Date of Patent: May 7, 2024Assignee: LG INNOTEK CO., LTD.Inventors: Ju Young Jang, Jeong Heum Lee, Ui Seon Hwang
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Patent number: 11970493Abstract: The present disclosure provides autotaxin (ATX) inhibitor compounds and compositions including said compounds. The present disclosure also provides methods of using said compounds and compositions for inhibiting ATX. Also provided are methods of preparing said compounds and compositions, and synthetic precursors of said compounds.Type: GrantFiled: October 4, 2021Date of Patent: April 30, 2024Assignee: ILDONG PHARMACEUTICAL CO., LTD.Inventors: Sung-Ku Choi, Yoon-Suk Lee, Sung-Wook Kwon, Kyung-Sun Kim, Jeong-Geun Kim, Jeong-Ah Kim, An-Na Moon, Sun-Young Park, Jun-Su Ban, Dong-Keun Song, Kyu-Sic Jang, Ju-Young Jung, Soo-Jin Lee
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Patent number: 11936337Abstract: 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.Type: GrantFiled: August 17, 2018Date of Patent: March 19, 2024Assignee: LG INNOTEK CO., LTD.Inventors: Ju Young Jang, Jeong Heum Lee, Soo Hong Kim, Ui Seon Hwang
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Patent number: 11905302Abstract: The present disclosure relates to a prelithiation solution and a method for preparing a prelithiated anode using the same. The prelithiation solution and the method for preparing a prelithiated anode using the same according to the present disclosure allow uniform intercalation of lithium ions throughout the anode chemically in a solution via a simple process of immersing the anode in a prelithiation solution having a sufficiently low redox potential as compared to an anode active material. A prelithiated anode prepared by this method has an ideal initial coulombic efficiency and a lithium secondary battery with a high energy density can be prepared based thereon. In addition, the prepared anode is advantageously applicable to large-scale production due to superior stability even in dry air.Type: GrantFiled: December 14, 2020Date of Patent: February 20, 2024Assignee: Korea Institute of Science and TechnologyInventors: Minah Lee, Jihyun Hong, Kyung Yoon Chung, Jin-Yoo Suh, Sang Ok Kim, Hyungseok Kim, Inyeong Kang, Ju Young Jang, Jin Kwan Choi
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Publication number: 20230276603Abstract: 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.Type: ApplicationFiled: August 5, 2021Publication date: August 31, 2023Applicant: LG INNOTEK CO., LTD.Inventors: Sang Hun AN, Ju Young JANG, Seok Min JIN
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Publication number: 20230275207Abstract: Proposed is a method of manufacturing an anode for a lithium secondary battery, including a pre-lithiation step.Type: ApplicationFiled: November 22, 2022Publication date: August 31, 2023Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, Korea Institute of Science and TechnologyInventors: Young Jin Nam, Dae Yang Oh, Soon Chul Byun, Jae Min Lim, Hong Suk Choi, Min Ah Lee, Ji Hyun Hong, In Yeong Kang, Ju Young Jang
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Publication number: 20230198261Abstract: 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.Type: ApplicationFiled: February 10, 2023Publication date: June 22, 2023Applicant: LG INNOTEK CO., LTD.Inventors: Jeong Heum LEE, Soo Hong KIM, Ju Young JANG, Jeong Heum PARK
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Publication number: 20230156964Abstract: 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.Type: ApplicationFiled: April 16, 2021Publication date: May 18, 2023Inventors: Yong Joo LEE, Mi Sun LEE, Ju Young JANG
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Patent number: 11626798Abstract: According to an embodiment, disclosed are a DC-DC converter for compensating for a ripple, in a solar linked energy storage system, and a control method thereof. In particular, disclosed is a DC-DC converter for compensating for a ripple generated in a DC link where a single phase inverter and a converter are connected. The DC-DC converter may obtain a frequency of a grid to compensate for the ripple.Type: GrantFiled: July 12, 2019Date of Patent: April 11, 2023Assignee: LG INNOTEK CO., LTD.Inventors: Sung Jae Kong, Ju Young Jang, Jeong Heum Lee
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Patent number: 11616368Abstract: 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.Type: GrantFiled: September 4, 2018Date of Patent: March 28, 2023Assignee: LG INNOTEK CO., LTD.Inventors: Jeong Heum Lee, Soo Hong Kim, Ju Young Jang, Jeong Heum Park
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Patent number: 11418116Abstract: 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.Type: GrantFiled: December 17, 2018Date of Patent: August 16, 2022Assignee: LG INNOTEK CO., LTD.Inventors: Sang Gyu Choi, Jeong Heum Lee, Ju Young Jang
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Publication number: 20220102721Abstract: The present disclosure provides a prelithiation solution for a graphite or graphite/silicon composite anode, which includes: (a) a cyclic or linear ether-based solvent; and (b) an aromatic hydrocarbon-lithium complex, and has a reduction potential of 0.25 V (vs Li/Li+) or lower. According to the present disclosure, lithium ions can be chemically intercalated uniformly throughout a graphite or graphite composite anode in solution phase and a high level of prelithiation may be achieved. In addition, an anode having an initial coulombic efficiency close to 100% may be provided by prelithiating a graphite or graphite composite anode using the prelithiation solution and a commercially applicable lithium secondary battery exhibiting high energy density may be provided based thereon.Type: ApplicationFiled: March 30, 2021Publication date: March 31, 2022Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Minah LEE, Jihyun HONG, Kyung Yoon CHUNG, Jin Kwan CHOI, Ju Young JANG
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Publication number: 20220052600Abstract: According to an embodiment, disclosed are a DC-DC converter for compensating for a ripple, in a solar linked energy storage system, and a control method thereof. In particular, disclosed is a DC-DC converter for compensating for a ripple generated in a DC link where a single phase inverter and a converter are connected. The DC-DC converter may obtain a frequency of a grid to compensate for the ripple.Type: ApplicationFiled: July 12, 2019Publication date: February 17, 2022Applicant: LG INNOTEK CO., LTD.Inventors: Sung Jae KONG, Ju Young JANG, Jeong Heum LEE
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Publication number: 20210347787Abstract: The present disclosure relates to a prelithiation solution and a method for preparing a prelithiated anode using the same. The prelithiation solution and the method for preparing a prelithiated anode using the same according to the present disclosure allow uniform intercalation of lithium ions throughout the anode chemically in a solution via a simple process of immersing the anode in a prelithiation solution having a sufficiently low redox potential as compared to an anode active material. A prelithiated anode prepared by this method has an ideal initial coulombic efficiency and a lithium secondary battery with a high energy density can be prepared based thereon. In addition, the prepared anode is advantageously applicable to large-scale production due to superior stability even in dry air.Type: ApplicationFiled: December 14, 2020Publication date: November 11, 2021Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Minah LEE, Jihyun HONG, Kyung Yoon CHUNG, Jin-Yoo SUH, Sang Ok KIM, Hyungseok KIM, Inyeong KANG, Ju Young JANG, Jin Kwan CHOI
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Publication number: 20210320589Abstract: 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.Type: ApplicationFiled: December 17, 2018Publication date: October 14, 2021Applicant: LG INNOTEK CO., LTD.Inventors: Sang Gyu CHOI, Jeong Heum LEE, Ju Young JANG
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Publication number: 20210313888Abstract: 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.Type: ApplicationFiled: August 20, 2019Publication date: October 7, 2021Applicant: LG INNOTEK CO., LTD.Inventors: Ju Young JANG, Soo Hong KIM, Jae Geun LEE
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Publication number: 20210242830Abstract: 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.Type: ApplicationFiled: October 26, 2018Publication date: August 5, 2021Applicant: LG INNOTEK CO., LTD.Inventors: Ju Young JANG, Jeong Heum LEE, Ui Seon HWANG
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Publication number: 20210234506Abstract: 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.Type: ApplicationFiled: August 17, 2018Publication date: July 29, 2021Applicant: LG INNOTEK CO., LTD.Inventors: Ju Young JANG, Jeong Heum LEE, Soo Hong KIM, Ui Seon HWANG
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Publication number: 20200321880Abstract: 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.Type: ApplicationFiled: September 4, 2018Publication date: October 8, 2020Applicant: LG INNOTEK CO., LTD.Inventors: Jeong Heum LEE, Soo Hong KIM, Ju Young JANG, Jeong Heum PARK
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Publication number: 20190221882Abstract: Provided is an anode active material for a lithium (Li) secondary battery, the material including silicon (Si)-based alloy powder, a carbonized layer at least partially surrounding the Si-based alloy powder serving as cores, and carbon nanofibers (CNFs) extending outward from a surface of the Si-based alloy powder through the carbonized layer.Type: ApplicationFiled: August 14, 2018Publication date: July 18, 2019Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Young Whan CHO, Ju Young JANG, In Yeong KANG, Young Su LEE, Jin Yoo SUH, Chan Soon KANG