Patents Assigned to LG Chem, Ltd.
  • Publication number: 20190235301
    Abstract: The present application relates to an optical device. The present application provides an optical device capable of varying transmittance, and such an optical device can be used for various applications such as eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.
    Type: Application
    Filed: April 25, 2018
    Publication date: August 1, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Ji Hoon Park, Hye Min Yu, Moon Soo Park, Young Shin Lee
  • Publication number: 20190237816
    Abstract: A wireless battery management system includes a plurality of slave BMSs coupled to a plurality of battery modules in one-to-one correspondence. Each slave BMS is configured to operate in active mode and sleep mode. Each slave BMS is configured to wirelessly transmit a detection signal indicating a state of the battery module. The wireless battery management system further includes a master BMS configured to wirelessly receive the detection signal from each of the plurality of slave BMSs. The master BMS is configured to set a scan cycle and a scan duration for each of the plurality of slave BMSs based on the detection signal, and wirelessly transmit a control signal to the plurality of slave BMSs. The control signal includes a wireless balancing command indicating the scan cycle and the scan duration set for each of the plurality of slave BMSs.
    Type: Application
    Filed: June 19, 2018
    Publication date: August 1, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Ji-Eun KIM, Chang-Hyun SUNG, Sang-Hoon LEE, Yean-Sik CHOI
  • Publication number: 20190237750
    Abstract: A method of manufacturing a negative electrode for a secondary battery includes a first step of preparing a lithium metal sheet coated with a lithium metal or to which the lithium metal is adhered in a form of a thin film on a release film and wound into a roll, a second step of laminating the lithium metal sheet to allow the lithium metal to be adjacent to a negative electrode material mixture, to thereby manufacture a negative electrode in which lithium metal is laminated and a third step of applying pressure to the negative electrode. The release film is coated with silicon. The negative electrode manufacturing method uniformly laminates or bonds lithium metal which is difficult to handle on the negative electrode material mixture of the secondary battery and advantageously enhances the speed of the pre-lithiation by using the patterned lithium metal.
    Type: Application
    Filed: April 5, 2019
    Publication date: August 1, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Ju Ri KIM, In Chul KIM, Joo Yong SONG, Seok Koo KIM
  • Publication number: 20190233549
    Abstract: The present invention relates to an emulsifying initiator and, more specifically, provides: an emulsifying initiator comprising a surfactant part, an initiator part, and vinyl monomer-derived repeating unit, the surfactant part comprising an organic acid-based monomer-derived repeating unit, and the initiator part including a peroxide-based monomer-derived repeating unit; and a thermoplastic resin composition comprising the same.
    Type: Application
    Filed: January 29, 2018
    Publication date: August 1, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Kwang Jin Lee, Yoon Ho Kim, Ki Hyun Yoo, Chang No Lee
  • Publication number: 20190237738
    Abstract: Disclosed herein is a three-electrode-system-type electrode potential measurement device for measuring the electrode potential of a cylindrical battery cell in which a beading portion is in a divided condition, the beading portion provided between a top cap assembly and a battery case, a first electrode terminal of the cylindrical battery cell located at the top cap assembly, and a second electrode terminal of the cylindrical battery cell located at the battery case, the electrode potential measurement device including a working electrode connection unit connected to one of the first electrode terminal or the second electrode terminal; a counter electrode connection unit connected to the other of the first electrode terminal or the second electrode terminal; a reference electrode connection unit connected to a reference electrode; a measurement unit connected to the working electrode connection unit; and a short-circuit prevention member located between the top cap assembly and the battery case.
    Type: Application
    Filed: December 21, 2017
    Publication date: August 1, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Min-Gyu Kim, Joo-Hwan Sung
  • Publication number: 20190237830
    Abstract: The present invention relates to a battery cell in which a foil functioning as a busbar is adopted in the battery cell, and thus, the resistance of the battery cell is reduced to increase the output of the battery cell.
    Type: Application
    Filed: January 11, 2018
    Publication date: August 1, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Sun Kyu Kim, Seok Koo Kim, Jin Hyung Lim
  • Publication number: 20190237747
    Abstract: An electrode for an all solid type battery is designed such that fibrous carbon materials serving as a conductor are densely arranged crossed into a 3-dimensional structure in the form of a mesh of a nonwoven fabric-like shape, and an inorganic solid electrolyte and electrode active material particles are impregnated and uniformly dispersed in the structure. By this structural feature, the electrode for an all solid type battery has very good electron conductivity and ionic conductivity.
    Type: Application
    Filed: May 15, 2018
    Publication date: August 1, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Sung-Ju CHO, Ho-Suk SHIN, Seung-He WOO, Sung-Joong KANG, Hyea-Eun HAN
  • Publication number: 20190233547
    Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and including a repeating unit derived from an aromatic vinyl monomer in an amount of greater than 0 wt % and less than 15 wt %, and a rubber composition including the same.
    Type: Application
    Filed: December 8, 2017
    Publication date: August 1, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Min Sik Mun, Ro Mi Lee, No Ma Kim, Sun Keun Kim, Youk Reol Na, Heung Yeal Choi
  • Publication number: 20190237823
    Abstract: A method for manufacturing a lithium secondary battery including the steps of manufacturing a lithium secondary battery including an electrode assembly, a non-aqueous electrolyte in which the electrode assembly is impregnated, and a battery case receiving the non-aqueous electrolyte; performing formation of the lithium secondary battery; and performing a degassing process for removing gas generated inside the lithium secondary battery, wherein the non-aqueous electrolyte includes a lithium salt, an organic solvent and 1,2,3-trifluorobenzen as an additive, wherein the 1,2,3-trifluorobenzen is included in an amount of 0.1 wt % to 10 wt % based on the total weight of the non-aqueous electrolyte, and the formation step is performed by charging the state of charge (SOC) of the battery up to 10% to 80%, while applying a voltage of 3.5 V to 4.5 V under a pressure of 0.5 kgf/cm2 to 5 kgf/cm2 at 45° C. to 80° C.
    Type: Application
    Filed: February 2, 2018
    Publication date: August 1, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jung Min Lee, Young Min Lim, Chul Haeng Lee, Yu Ha An, Yi Jin Jung, Yeon Ji Oh
  • Publication number: 20190233553
    Abstract: The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition including the same. The novel ligand compound and the transition metal compound of the present invention may be useful as a catalyst of polymerization reaction for preparing an olefin-based polymer having a low density. In addition, an olefin polymer which is polymerized using the catalyst composition including the transition metal compound may be used for the manufacture of a product having low melt index (MI) and high molecular weight.
    Type: Application
    Filed: November 9, 2017
    Publication date: August 1, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Dong Eun Kim, Yun Jin Lee, Jung Ho Jun, Seung Hwan Jung, Jin Sam Gong, Choong Hoon Lee
  • Publication number: 20190237975
    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 C-rate (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?(0.25˜0.15), V2=n?(0.2˜0.1), and V3=n (here, ‘n’ is an electric potential at the full charge of the secondary battery), and V1<V2<V3, and the ratio of the first C-rate (C1):the second C-rate (C2):the third C-rate (C3) satisfies following condition (1): C1:C2:C3=3.8˜4.2:2.8˜3.2:0.8˜1.2 (1).
    Type: Application
    Filed: March 9, 2018
    Publication date: August 1, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Jun Hyuk SONG, Joo Sung LEE
  • Publication number: 20190233682
    Abstract: The present application relates to a pressure-sensitive adhesive composition for a foldable display and a use thereof. The pressure-sensitive adhesive composition of the present application has excellent bending reliability while having appropriate adhesive force and cohesive force, thereby being useful for forming a pressure-sensitive adhesive layer for a foldable display having improved release force.
    Type: Application
    Filed: September 8, 2017
    Publication date: August 1, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Hyon Gyu PARK, Dong Kyu ROH, Yoon Kyung KWON
  • Publication number: 20190237757
    Abstract: The present disclosure relates to a method for manufacturing an electrode including a polymer electrolyte and an electrode obtained thereby. Particularly, the present disclosure relates to an electrode for a wide voltage battery which has improved reactivity on the surface of the electrode active material. The electrode provides an increased reactive site between an electrode active material and a polymer electrolyte and an improved ratio of the amount of active material in the electrode, and thus can provide a battery with improved energy density.
    Type: Application
    Filed: March 6, 2018
    Publication date: August 1, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Jung-Pil LEE, Hyea-Eun HAN, Eun-Bee KIM, Ji-Young KIM, Eun-Kyung MOK, Hye-Ri JUNG
  • Publication number: 20190237805
    Abstract: An electrolyte additive composition of the present invention may improve high-rate charge and discharge characteristics and high-temperature storage and life characteristics of a lithium secondary battery and may achieve an effect of increasing reversible capacity when the electrolyte additive composition is used in an electrolyte while including a novel borate-based lithium compound as well as a lithiated additive.
    Type: Application
    Filed: March 16, 2018
    Publication date: August 1, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Young Min Lim, Chul Haeng Lee, Jung Min Lee
  • Publication number: 20190237811
    Abstract: Disclosed herein is a pouch-shaped secondary battery in which a unit cell, including an electrode assembly having a positive electrode and a negative electrode stacked with a separator interposed therebetween, electrode tabs, and electrode leads, is mounted in a pouch-shaped case, wherein the pouch-shaped secondary battery includes a unidirectional structure through which electrode leads oriented in two opposite directions are connected to electrode terminals oriented in a single direction. In the case in which a battery pack is constituted using a bidirectional cell, a large space is required, whereby the energy density of the battery pack is reduced. The lifespan of a unidirectional cell is reduced due to heat generated from electrode leads and due to nonuniform use of active materials in the cell at the time of charging and discharging the cell. The disclosed pouch-shaped secondary battery has the effect of solving the above problems.
    Type: Application
    Filed: March 21, 2018
    Publication date: August 1, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jong Pil Park, Geun Chang Chung, Won Seok Jeong, Yo Han Ko
  • Publication number: 20190237824
    Abstract: Disclosed is a battery module, which includes a pouch-type battery cell; a voltage sensor configured to sense a voltage of the battery cell; and a sensing wire configured to connect the battery cell and the voltage sensor, wherein the battery cell includes a sensing lead connected to an electrode tab, and wherein the sensing lead is exposed to the outside through a sensing hole formed in a sealing portion of the pouch cell.
    Type: Application
    Filed: February 21, 2018
    Publication date: August 1, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Hee-Jun JIN, Sung-Won SEO, Yoon-Koo LEE, Jeong-O MUN, Eun-Ah JU
  • Patent number: 10367219
    Abstract: The present specification relates to a polymer electrolyte membrane, a membrane electrode assembly including the same, and a fuel cell including the membrane electrode assembly.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: July 30, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Insung Bae, Moonchan Lee, Hyuk Kim, Minkyu Min, Ji Hun Kim, Curie Park
  • Patent number: 10367200
    Abstract: The present invention relates to positive electrode active material slurry including two different types of binders in a specific ratio and having a high solid concentration and low viscosity, a positive electrode including a positive electrode active material layer formed therefrom, and a lithium secondary battery including the positive electrode.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: July 30, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Do Hwa Jung, Hyun Won Lee, Sang Hoon Choy
  • Patent number: 10364346
    Abstract: Disclosed are an ABS-based resin composition and a molded article manufactured therefrom. More particularly, the ABS-based resin composition according to the present disclosure includes (a) 22.5 to 50% by weight of a vinyl cyan compound-conjugated diene-based rubber-like polymer-aromatic vinyl compound copolymer resin; (b) 47.5 to 75% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer resin; (c) 1 to 6% by weight of a polyether ester amide resin; and (d) 1.5 to 3% by weight of an ethoxylated alkylamine-based antistatic agent, thereby providing a high humidification amount and less deformation. Accordingly, the present disclosure relates to an ABS-based resin composition suitable for application to disks for air washers, humidifiers, and the like, and a molded article manufactured therefrom.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: July 30, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Seung Cheol Ryoo, Soo Kyeong Lee, Seong Lyong Kim
  • Patent number: 10364331
    Abstract: The present application relates to a composite electrolyte membrane and a method for manufacturing the same. The composite electrolyte membrane according to the present application includes: a poly(arylene ether sulfone) copolymer including the repeating unit represented by Chemical Formula 1 and the repeating unit represented by Chemical Formula 2; and a core-shell particle including an inorganic particle core and a basic organic polymer shell.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: July 30, 2019
    Assignees: LG CHEM, LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Seong Ho Choi, Jong-Chan Lee, Hyuk Kim, Doyoung Kim, Ji Hun Kim, Taeyun Ko, Bo-Kyung Jung, Kihyun Kim