Patents Assigned to LG Chem, Ltd.
  • Patent number: 11063316
    Abstract: A battery module and a battery pack are disclosed. The battery module includes a module frame having a top plate and a bottom plate vertically spaced apart from each other at a predetermined interval and disposed to face each other, and at least one barrier configured to vertically partition a space between the top and bottom plates; two or more battery submodules arranged inside the module frame in a matrix form with the at least one barrier being interposed therebetween; and a left side plate and a right side plate configured to cover a left side and a right side of the module frame and a front cover and a rear cover configured to cover a front side and a rear side of the module frame.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: July 13, 2021
    Assignee: LG Chem, Ltd.
    Inventors: Hyung-Kyu Kim, Tae-Wook Kim, Myung-Ki Park
  • Publication number: 20210210818
    Abstract: A separator for an electrochemical device including a porous substrate made of a porous polymer material. The separator substrate has a small thickness, excellent resistance characteristics, ion conductivity, and high mechanical strength. When the separator is applied to a battery, it is possible to improve the output characteristics of the battery.
    Type: Application
    Filed: July 12, 2019
    Publication date: July 8, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Su-Jin PARK, Sang-Joon LEE
  • Publication number: 20210206921
    Abstract: The present disclosure relates to a polyimide-based resin film which is synthesized by the reaction of an acid anhydride compound and a diamine compound having a specific structure, a substrate for display device, and an optical device using the same.
    Type: Application
    Filed: January 28, 2020
    Publication date: July 8, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Kyunghwan KIM, Jiyeon SUNG
  • Publication number: 20210206887
    Abstract: A method for predicting physical properties of a polyethylene resin is provided, which can reliably predict a proper charging ratio of a crosslinking agent in the production process of a low density crosslinked polyethylene resin, and the physical properties of the polyethylene resin achieved therefrom. A method for producing a polyethylene resin by applying the same method is also provided.
    Type: Application
    Filed: August 23, 2019
    Publication date: July 8, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Seung Won Choi, Eun Jung Joo
  • Publication number: 20210207941
    Abstract: The present invention relates to a method for measuring the active area of an active material in an electrode, comprising: manufacturing three types of electrodes including a first electrode coated with an electrode mixture including both an electrode active material and a conductive material, a second electrode coated with an electrode mixture which includes the electrode active material as a main ingredient and does not include the conductive material, and a third electrode coated with an electrode mixture which does not include the active material and includes the conductive material as a main ingredient; a cell manufacturing step of manufacturing three types of monocells by using the same types of electrodes; a capacitance measuring step of measuring, from the monocells, capacitance of each electrode used in the monocells; and an active area calculating step of calculating the active area of the electrode active material from the capacitance.
    Type: Application
    Filed: November 27, 2019
    Publication date: July 8, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Ji Hye PARK, Seok Koo KIM
  • Publication number: 20210206935
    Abstract: The present invention relates to an anti-reflective film that has a low reflectance deviation and a light transmittance deviation, can simultaneously realize high scratch resistance and anti-fouling property, and can increase screen sharpness of a display apparatus, a polarizing plate and a display apparatus comprising the same.
    Type: Application
    Filed: October 17, 2019
    Publication date: July 8, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Jinseok BYUN, So Young KIM, Jung Hyun SEO, Dong Hyun KIM, Kyung Moon KO, Yeongrae CHANG
  • Publication number: 20210210787
    Abstract: An electrolyte for a lithium secondary battery is disclosed herein. In some embodiments, an electrolyte includes a lithium salt present in a concentration of 1.6 M to 5 M, an oligomer mixture including a first oligomer containing a unit represented by Formula 1 and a second oligomer containing a unit represented by Formula 2, and an organic solvent.
    Type: Application
    Filed: July 26, 2019
    Publication date: July 8, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Won Kyung Shin, Kyoung Ho Ahn, Chul Haeng Lee, Min Jung Kim, Jung Hoon Lee
  • Publication number: 20210206936
    Abstract: The present invention relates to an antireflection film. The antireflection film includes a low refractive index layer having excellent alkali resistance and exhibiting remarkably improved mechanical properties such as scratch resistance and impact resistance as well as reduction of a glare phenomenon, and a base film exhibiting excellent mechanical strength and water resistance in spite of a thin thickness and having no fear of interference fringes occurring. Therefore, such antireflection film can be used as a protective film of a polarizing plate or used as any other component so as to provide a thin display device, and furthermore, can effectively prevent the glare phenomenon of the display device, and can more improve the durability and lifespan thereof.
    Type: Application
    Filed: March 18, 2021
    Publication date: July 8, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Boo Kyung KIM, Yeong Rae CHANG, Seok Hoon JANG, Jin Seok BYUN
  • Publication number: 20210207946
    Abstract: The present invention relates to a method of non-destructively measuring a thickness of a reinforcement membrane, and more particularly, to a method of non-destructively measuring a thickness of a hydrogen ion exchange reinforcement membrane for a fuel cell, in which the reinforcement membrane has a symmetric three-layer structure including a reinforcement base layer and pure water layers disposed at opposing sides of the reinforcement base layer, including performing total non-destructive inspection and omitting a process of analyzing a position by means of a thickness peak of a power spectrum of the respective layers of the reinforcement membrane.
    Type: Application
    Filed: May 20, 2019
    Publication date: July 8, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Sung-Hyun YUN, Joo-Yong PARK, Ji-Hun KIM, Jae-Choon YANG
  • Publication number: 20210210802
    Abstract: The present invention relates to a method for activating a secondary battery. The present invention comprises: a primary charging step of charging a secondary battery including a positive electrode, a negative electrode, a separator, and an electrolyte; a room temperature-aging step of storing, at a room temperature, the secondary battery that has undergone the primary charging step; and a high temperature-aging step of storing, at a high temperature, the secondary battery that has undergone the room temperature-aging step, wherein charging/discharging is performed by alternately applying + current and ? current to the secondary battery at the end of the primary charging step. The method for activating a secondary battery according to the present invention includes alternately applying + current and ? current to the secondary battery at the end of the primary charging step to stabilize an SEI film, thereby shortening a following-up aging time.
    Type: Application
    Filed: November 15, 2019
    Publication date: July 8, 2021
    Applicant: LG CHEM, LTD.
    Inventors: In Young CHA, Joon Sung BAE, Sung Hoon YU, Seung Youn CHOI, Gyu Ok HWANG
  • Publication number: 20210206909
    Abstract: The present invention provides a novel polymer comprising a repeating unit represented by the following Chemical Formula 1, and an organic light emitting device including the same: Wherein L1, L2, Ar1, Ar2, Ar3, R1 to R8, o, p and n are described herein.
    Type: Application
    Filed: March 16, 2021
    Publication date: July 8, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Seog Jae Seo, Jaesoon Bae, Esder Kang, Daeho Kim, Keunsoo Lee, Beomgoo Kang, Min Suk Jung, Jaechol Lee
  • Publication number: 20210206885
    Abstract: The present invention relates to a modification initiator and a modified conjugated diene-based polymer including the same, and more particularly, the present invention provides a modification initiator including a compound represented by Formula 1, a modified conjugated diene-based polymer including the same, and a method of preparing a modified conjugated diene-based polymer.
    Type: Application
    Filed: March 25, 2021
    Publication date: July 8, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Min Soo Kim, Soo Yong Lee, Won Mun Choi
  • Patent number: 11056901
    Abstract: A method of charging a secondary battery, including first, second and third charging sections in which a CC-charging performed as first, second, and third Crate (C1, C2, C3), respectively, is supplied until the voltage of the secondary battery reaches a respective first, second and third charging cutoff voltage (V1), (V2), (V3) and a CV-charging is performed as the respective charging C-rate gradually decreases in response to reaching the respective charging cutoff voltage (V1), (V2), (V3), wherein the charging cutoff voltage satisfies the V1=n?(0.25Ėœ0.15), V2 n?(0.2Ėœ0.1), and V3=n (here, ā€˜nā€™ is an electric potential at the full charge of the secondary battery), and V1<V2<V3.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: July 6, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Jun Hyuk Song, Joo Sung Lee
  • Patent number: 11056725
    Abstract: An electrode and a lithium secondary battery comprising the same, in particularly an electrode comprising an electrode layer, a pre-lithiation prevention layer formed on the electrode layer, and a lithium layer formed on the pre-lithiation prevention layer, which is capable of greatly improving the problem of the reduction of irreversible capacity of a negative electrode while preventing fire caused by a lithiation reaction due to contact between lithium and silicon before assembling a cell, and a lithium secondary battery including the same.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: July 6, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Byoungkuk Son, Minehul Jang, Eunkyung Park, Junghun Choi
  • Patent number: 11056732
    Abstract: A battery management apparatus includes a master BMS and a plurality of slave BMSs connected to the master BMS by means of communication. The master BMS includes a master controller configured to generate operation order information of the plurality of slave BMSs based on state-of-charge information of each of a plurality of battery modules respectively connected to the plurality of slave BMSs.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: July 6, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Ji-Eun Kim, Sang-Hoon Lee, Yean-Sik Choi
  • Patent number: 11054477
    Abstract: An apparatus, a battery system and a method for controlling a main battery and a sub battery. The apparatus includes a first main switch connectable between the main battery and an electrical load, a second main switch connectable between the sub battery and the electrical load, a sub switch connectable between the main battery and the sub battery, a main battery management system and a sub battery management system. The main battery management system transmits a first diagnosis message to the sub battery management system, when a fault of the main battery is detected. The sub battery management system induces the second main switch into a turn on state, in response to the first diagnosis message.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: July 6, 2021
    Assignee: LG CHEM, LTD.
    Inventor: Kyoung-Choon Min
  • Patent number: 11056714
    Abstract: Provided is a secondary battery that is capable of reducing resistance. The secondary battery includes an electrode assembly in which a positive electrode and a negative electrode are alternately laminated with a separator therebetween, a first bus bar laminated on the outside of the positive electrode disposed on the outermost portion of one side of the electrode assembly with a separator therebetween, a second bus bar laminated on the outside of the negative electrode disposed on the outermost portion of the other side of the electrode assembly with a separator therebetween, and a case accommodating the electrode assembly, the first bus bar, and the second bus bar.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: July 6, 2021
    Assignee: LG Chem, Ltd.
    Inventors: Sun Kyu Kim, Seok Koo Kim
  • Publication number: 20210202845
    Abstract: An organic electric element, a display panel, and a display device including the organic electric element are provided. The organic electric element includes a charge generating layer including a first layer comprising a first compound and a second compound and a second layer comprising a third compound so that they may have excellent efficiency or lifespan.
    Type: Application
    Filed: December 29, 2020
    Publication date: July 1, 2021
    Applicants: LG DISPLAY CO., LTD., LG CHEM, LTD.
    Inventors: Jicheol SHIN, Seonkeun YOO, Jeongdae SEO, Shinhan KIM, JooYong YOON, Jun YUN, DongHeon KIM, YongHan LEE, SungJae LEE
  • Publication number: 20210202858
    Abstract: Provided are an organic electric element, a display panel and a display device including the organic electric element which include a charge generating layer including a first layer comprising a first compound and a second compound and a second layer comprising a third compound so that they may have excellent efficiency or lifespan.
    Type: Application
    Filed: December 29, 2020
    Publication date: July 1, 2021
    Applicants: LG Display Co., Ltd., LG Chem, Ltd.
    Inventors: Jicheol SHIN, Seonkeun YOO, Jeongdae SEO, Shinhan KIM, JooYong YOON, Jun YUN, DongHeon KIM, YongHan LEE, SungJae LEE
  • Publication number: 20210199601
    Abstract: A method for evaluation of a resin alloy includes identifying and quantifying individual materials contained in the resin alloy. In addition, the method can identify encapsulation and whether or not a single phase is formed, without an additional equipment, allowing easier analysis and evaluation of various alloy materials through evaluation of physical properties of resin alloys.
    Type: Application
    Filed: November 6, 2019
    Publication date: July 1, 2021
    Applicant: LG Chem, Ltd.
    Inventor: Narae Cho