Patents Assigned to LG Chem, Ltd.
  • Publication number: 20210226205
    Abstract: Provided is a lithium secondary battery including a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and an electrolyte, wherein the positive electrode includes, as a positive electrode active material, a lithium composite transition metal oxide powder having a layered structure and a nickel content accounting for 50 atm % or more of total transition metals, and wherein the layered structure of the positive electrode active material is phase-transformed into a spinel structure at a temperature of 300° C. or more in a fully charged state.
    Type: Application
    Filed: June 19, 2019
    Publication date: July 22, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Na Ri Park, Yeo June Yoon, Sung Ho Ban, Jun Ho Eom, Hyeon Hui Baek, Ki Cheol Shin
  • Publication number: 20210226254
    Abstract: An electrolyte solution for a lithium-sulfur battery including: a lithium salt, which includes an anion having a donor number of 15 kcal/mol of more, and a non-aqueous solvent, and a lithium-sulfur battery including the same.
    Type: Application
    Filed: April 3, 2019
    Publication date: July 22, 2021
    Applicants: LG CHEM, LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yun Kyoung KIM, Hee Tak KIM, Doo Kyung YANG, Hyungjun NOH, Hyunwon CHU
  • Publication number: 20210226246
    Abstract: The present invention discloses a pressing jig for pressing a battery cell, and a battery module including a module case in which a plurality of battery cells are included while installed in the pressing jig, wherein the pressing jig includes a presser including a plurality of pressing plates provided on outermost portions of a plurality of battery cells and among them and separating a space for receiving a plurality of battery cells, and performing pressing on a plurality of battery cells, and pressing frames connecting the pressing plates on upper portions and lower portions of the pressing plates, wherein all the pressing plates or the pressing plates excluding one pressing plate provided on an outermost portion on one side may move in a horizontal direction as the pressing direction, while connected to the pressing frames.
    Type: Application
    Filed: December 19, 2019
    Publication date: July 22, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Hyunwoong YUN, Hoejin HAH, Jong Keon YOON
  • Publication number: 20210226219
    Abstract: Provided are an electrode for a secondary battery, a manufacturing method thereof, and a secondary battery including the same. Specifically, according to one embodiment of the present invention, there is provided an electrode for a secondary battery, the electrode including two kinds of binders of which particle diameters are different from each other and distributions in an electrode mixture layer are different from each other.
    Type: Application
    Filed: January 16, 2020
    Publication date: July 22, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Jeong Man Son, Dong Jo Ryu, Seon Hee Han, Jung Sup Han, Min Ah Kang, Cheolhoon Choi
  • Patent number: 11069932
    Abstract: A battery module includes: a plurality of cylindrical battery cells each having electrode terminals respectively at an upper portion and a lower portion thereof; a module housing including an accommodation portion having hollow structures in which the cylindrical battery cells are inserted and accommodated; a current collecting plate on an outer surface of the module housing and including welding holes through which the electrode terminals of the cylindrical battery cells are exposed to the outside; a bus bar in contact with each of the electrode terminals and the current collecting plate to electrically connect the electrode terminals to the current collecting plate; and a heat conduction pad disposed outside the current collecting plate and including a contact protrusion portion protruding and extending in a direction in which the electrode terminals are disposed to be in contact with a contact connection portion between the electrode terminals and the bus bar.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: July 20, 2021
    Assignee: LG Chem, Ltd.
    Inventors: Seong-Hwan Yang, Jin-Oh Yang, Seog-Jin Yoon
  • Patent number: 11065963
    Abstract: A diagnostic system for a DC-DC voltage converter includes a microcontroller having a first diagnostic handler application and first and second applications. The first application sets a first non-recoverable diagnostic flag associated with the DC-DC voltage converter to a first encoded value having each nibble thereof selected from an odd Karnaugh set of binary values. The second application sets a second non-recoverable diagnostic flag to a second encoded value having each nibble thereof selected from an even Karnaugh set of binary values. The first diagnostic handler application sets a first master non-recoverable diagnostic flag to a first encoded fault value if the first non-recoverable diagnostic flag is equal to a second encoded fault value, or the second non-recoverable diagnostic flag is equal to a third encoded fault value.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: July 20, 2021
    Assignee: LG Chem, Ltd.
    Inventor: Kerfegar K. Katrak
  • Patent number: 11067847
    Abstract: The present specification relates to a wide color gamut film including a transparent substrate; a wide color gamut layer provided on one surface of the transparent substrate, and including a compound including a photocurable functional group and a dye or a pigment having a maximum absorption wavelength of 580 nm to 610 nm; a surface layer provided on the wide color gamut layer, wherein the transparent substrate, the wide color gamut layer and the surface layer are consecutively laminated, and a polarizing plate and a liquid crystal display device including the same.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: July 20, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Hanna Lee, Kyungki Hong, Yeongrae Chang
  • Patent number: 11069895
    Abstract: An electrode assembly for a solid state battery includes a positive electrode, a negative electrode and a solid electrolyte layer interposed between the positive electrode and the negative electrode. In addition, the binder disposed at the interface between the negative electrode and the solid electrolyte layer, the interface between the positive electrode and the solid electrolyte layer and/or at a predetermined depth from the interface is crosslinked to form a three-dimensional network. In other words, in the electrode assembly, the binder contained in the negative electrode and the solid electrolyte layer and/or the binder contained in the positive electrode and the solid electrolyte layer is crosslinked to improve the interfacial binding force between the negative electrode and the solid electrolyte layer and/or between the positive electrode and the solid electrolyte layer, and thus ion conductivity is maintained to a significantly high level.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: July 20, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Sung-Ju Cho, Ho-Suk Shin, Seung-He Woo, Sung-Joong Kang, Hyea-Eun Han
  • Patent number: 11066516
    Abstract: The present invention relates to a polycarbonate resin composition for a light guide plate and an optical molded article using the same. The polycarbonate resin composition according to the present invention is excellent in transmittance and color tone uniformity required as the light guide plate, and also is excellent in processability and thus can be usefully used as a material of the light guide plate.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: July 20, 2021
    Assignee: LG Chem, Ltd.
    Inventors: Byoungkue Chun, Moo Ho Hong, Hyong Min Bahn, Un Ko
  • Patent number: 11066542
    Abstract: The present invention relates to a method of preparing a thermoplastic resin, a method of preparing a thermoplastic resin composition including the same, and a method of manufacturing an injection-molded article using the thermoplastic resin composition. By using a mixture of molecular weight modifiers having different reactivities according to the present invention, coagulation may be performed using a small amount of coagulant, productivity may be increased, and a molded article, which is manufactured using a thermoplastic resin, having excellent appearance characteristics along with superior mechanical strength, processability, or the like may be provided.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: July 20, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Jong Beom Kim, Joo Byung Chai, Yu Sung Jung, Chang Sull Kim, Eun Seon Park, Tae Young Jeon, Young Min Kim
  • Patent number: 11065556
    Abstract: Provided is a method of separating and purifying a mixture of components having small difference in boiling point, and the method may maximize an energy collecting amount and collect a product to be desired in high purity and high yield.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: July 20, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Sung Kyun Kim, Sung Kyu Lee, Ji Hye Kim, Yong Mann Beyun, Joon Ho Shin
  • Patent number: 11069899
    Abstract: The present invention relates to a negative electrode for a secondary battery. The negative electrode for the secondary battery according to an embodiment of the present invention comprises a negative electrode collector and a negative electrode active material integrated with at least a portion of a surface of the negative electrode collector, wherein the negative electrode collector has a plurality of delamination prevention current collection grooves with which the negative electrode active material is integrated, and the negative electrode active material is disposed on an inner surface of each of the delamination prevention current collection grooves so that a space part in which a passivation layer is formed is defined during charging and discharging.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: July 20, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Jin Hyun Cho, Hyun Woong Yun
  • Patent number: 11069858
    Abstract: The present specification provides a compound of Chemical Formula 1, and an organic light emitting device including the same. The compound of Chemical Formula 1 used in one or more organic material layers of an organic light emitting device provides enhanced efficiency, lowered driving voltage, and increased lifetime of the device.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: July 20, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Sung Jae Lee, Jae Seung Ha, Sung Kil Hong
  • Patent number: 11070067
    Abstract: A battery management unit for a battery module, the battery management unit including a sensing unit electrically connected to a plurality of battery cells, the sensing unit detecting voltage of each battery cell of the plurality of battery cells and outputting a detection signal including voltage information representing the detected voltage, a first power supply unit generating a first operating voltage using a module voltage of the battery module, and a communication unit which operates using the first operating voltage, the communication unit including an antenna, a wireless communication circuit and a first input port, the communication unit receiving the detection signal from the sensing unit through the first input port, testing at least one preset item based on the detection signal, and outputting a RF signal representing a result of the testing through the antenna and the wireless communication circuit.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: July 20, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Keun-Wook Lee, Sang-Hoon Lee, Yean-Sik Choi
  • Publication number: 20210214497
    Abstract: The present invention relates to a polyamide resin having a main chain having a structure in which two polyamide segments are linked in an alternating way, a preparation method thereof, and a polyamide film and resin laminate including the same.
    Type: Application
    Filed: November 1, 2019
    Publication date: July 15, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Il Hwan CHOI, Young Ji TAE, Soonyong PARK, Youngseok PARK
  • Publication number: 20210213503
    Abstract: The present invention relates to an electrode rolling roll cleaning apparatus for removing pollutants on an electrode rolling roll, the apparatus comprising: a cleaning part for cleaning a rolling roll by bringing the rolling roll into contact with a cleaning member; an air spraying part for spraying air onto the rolling roll; a heating part for applying heat to the rolling roll so as to dry the rolling roll; and a scraper part for mechanically removing a cleaning liquid and foreign substances attached to the rolling roll.
    Type: Application
    Filed: January 23, 2020
    Publication date: July 15, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Kun Ha Park, Seung Gi Yang, Ung Ju Lee
  • Publication number: 20210218097
    Abstract: A battery module according to the present disclosure includes: a cell assembly that includes at least one battery cell; an upper plate that covers one side of the cell assembly, and includes a hinge pin adjacent at least one corner thereof; and a bus-bar frame that covers a neighboring side of the one side of the cell assembly, covered by the upper plate, and coupled to the upper plate by including a hinge coupling portion that is coupled with the hinge pin, wherein the hinge coupling portion comprises a hinge pin receiving portion where the hinge pin is received and a hinge pin cover portion that covers the hinge pin, and one of the hinge pin and the hinge coupling portion comprises a coupling protrusion portion, and the other comprises a coupling groove portion corresponding to the coupling protrusion portion.
    Type: Application
    Filed: December 4, 2019
    Publication date: July 15, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Jinwoo Park, Tae Geun Kim
  • Publication number: 20210218021
    Abstract: A positive electrode active material for a lithium secondary battery includes a lithium composite transition metal oxide including transition metals including nickel (Ni), cobalt (Co), and manganese (Mn), and the lithium composite transition metal oxide is doped with doping elements including cobalt (Co) and titanium (Ti). The lithium composite transition metal oxide includes at least one lithium layer and at least one transition metal layer including the transition metals, and the lithium layer and the transition metal layer are alternately arranged. The thickness of the lithium layer ranges from 2.146 ? to 2.182 ?, and the thickness of the transition metal layer ranges from 2.561 ? to 2.595 ?A.
    Type: Application
    Filed: June 27, 2019
    Publication date: July 15, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Won Tae Kim, Jong Yeol Yu, Seoung Chul Ha, Sun Sik Shin, Hong Kyu Park, Seong Hoon Kang
  • Publication number: 20210218070
    Abstract: A battery pack, comprising: a plurality of battery modules; a battery management system (BMS) controlling charging or discharging of the battery pack; a wake-up control unit controlling wake-up of the BMS; a protection circuit unit protecting the battery pack; and a main field-effect transistor (FET), one end being connected to the protection circuit unit, and another end being connected to a positive output terminal of the battery pack, to control an output of the battery pack in response to control by the BMS, the protection circuit unit comprising a blocking switch, one end being connected to a positive terminal of the plurality of battery modules, another end being connected to the BMS and the main FET, so that the blocking switch is set to an on state and then is turned off upon receiving a blocking signal from the BMS to block the output of the battery pack.
    Type: Application
    Filed: January 10, 2020
    Publication date: July 15, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Sung Won YOON, Doe Gyun KIM
  • Publication number: 20210215851
    Abstract: The present disclosure provides an optical laminate including: a polymer substrate containing a polymer resin and rubber particles having a cross-sectional diameter of 10 to 500 nm dispersed in the polymer resin; and an antiglare layer containing a binder resin and organic fine particles, nano-inorganic particles and chain-shaped silica dispersed in the binder resin, wherein rubber particles having a cross-sectional diameter of 10 to 500 nm exist within 50% of the thickness of the antiglare layer from the interface between the polymer substrate and the antiglare layer, a polarizing plate including the optical laminate, and a liquid crystal display and a display device including the polarizing plate.
    Type: Application
    Filed: January 8, 2020
    Publication date: July 15, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Min Soo KIM, Jung Hyun SEO, Jaehoon SHIM, Jae Pil KOO, Hyung Oh LIM, Jaeyoung KIM