Patents by Inventor Jung Woo Yoo

Jung Woo Yoo 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).

  • Patent number: 11522179
    Abstract: The present invention relates to a negative electrode including a current collector and a negative electrode active material layer disposed on the current collector, wherein the negative electrode active material layer includes a negative electrode active material, carbon black, and a binder, wherein the negative electrode active material includes silicon particles, and the binder includes a copolymer containing a unit derived from a poly(vinylalcohol) (PVA) and a unit derived from an ionized and substituted acrylate, the binder being included in the negative electrode active material layer in an amount of 18 wt % to 22 wt %.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: December 6, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Young Jae Kim, Jung Woo Yoo
  • Publication number: 20220367855
    Abstract: Disclosed is a composite negative electrode active material comprising silicon-based core particles, an outer carbon coating layer present on the silicon-based core particles, and single-walled carbon nanotubes, wherein the single-walled carbon nanotubes are in contact with the outer carbon coating layer and comprise a body partially spaced apart from the outer carbon coating layer, and the outer carbon coating layer comprises oxygen in an amount of 35 wt % to 55 wt % therein.
    Type: Application
    Filed: July 23, 2020
    Publication date: November 17, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Il Geun OH, Yong Ju LEE, Je Young KIM, Jung Woo YOO, Ye Lin KIM, Tae Gon KIM
  • Publication number: 20220294037
    Abstract: A method for manufacturing a secondary battery including: forming an electrode assembly including a negative electrode including a silicon-based active material, a positive electrode facing the negative electrode, and a separator between the negative electrode and the positive electrode; impregnating the electrode assembly by injecting an electrolytic solution into the electrode assembly to form an impregnated electrode assembly; performing activation through first charging/discharging in at least one cycle while pressurizing the impregnated electrode assembly to form an activated electrode assembly; allowing the activated electrode assembly to stand at 40° C. to 80° C. in a state of being charged to a SOC of 70% or more; removing a gas generated from the electrode assembly after allowing the activated electrode assembly to stand; and subjecting the electrode assembly to a second charging/discharging in at least one cycle at 15° C. to 30° C. after the removing of gas generated from the electrode assembly.
    Type: Application
    Filed: September 22, 2020
    Publication date: September 15, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Young Jae KIM, Jung Woo YOO, Ye Lin KIM
  • Publication number: 20220285744
    Abstract: The present invention provides a battery system including one or more secondary batteries each including a negative electrode including a silicon-based active material, a positive electrode facing the negative electrode, a separator interposed between the negative electrode and the positive electrode, and an electrolyte and a control unit configured to set a driving voltage range for charging and discharging of the secondary batteries, wherein a maximum driving voltage of the secondary battery set by the control unit is in a range of 4.00 V to 4.08 V, and a minimum driving voltage of the secondary battery set by the control unit is in a range of 2.98 V to 3.07 V.
    Type: Application
    Filed: September 22, 2020
    Publication date: September 8, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Young Jae KIM, Jung Woo YOO, Ye Lin KIM
  • Publication number: 20220255060
    Abstract: The present invention provides a negative electrode which comprises: a negative electrode current collector; and a negative electrode active material layer formed on the negative electrode current collector and comprising a negative electrode active material containing a silicon-based active material and a carbon-based active material, a binder, and single-walled carbon nanotube aggregates. The single-walled carbon nanotube aggregates are comprised at 0.05 parts by weight to 0.37 parts by weight based on 100 parts by weight of the silicon-based active material in the negative electrode active material layer.
    Type: Application
    Filed: July 24, 2020
    Publication date: August 11, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Il Geun OH, Je Young KIM, Yong Ju LEE, Jung Woo YOO, Sun Young SHIN, Ye Lin KIM, Tae Gon KIM
  • Publication number: 20220255150
    Abstract: The present invention relates to a method of manufacturing a secondary battery comprising the steps of: forming a secondary battery structure comprising an electrode assembly comprising a negative electrode, a positive electrode, and a separator and an electrolyte solution, and activating the secondary battery structure by charging and discharging for at least one cycle while pressing the secondary battery structure at 1.5 MPa to 3.5 MPa, wherein the negative electrode comprises a silicon-based active material.
    Type: Application
    Filed: July 16, 2020
    Publication date: August 11, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Young Jae KIM, Jung Woo YOO
  • Patent number: 11397041
    Abstract: A refrigerator and a method for controlling the same. The refrigerator includes a main body; a first storage chamber and a second storage chamber provided in the main body; a first evaporator provided in the first storage chamber, configured to generate cool air; a second evaporator provided in the second storage chamber, configured to generate the cool air; a switching valve configured to supply a refrigerant to at least one of the first evaporator or the second evaporator; and a controller configured to generate a control signal for controlling the switching valve so that the refrigerant supplied to at least one of the first evaporator or the second evaporator is distributed according to a predetermined reference, and lower the temperature of the first storage chamber and the second storage chamber to a predetermined temperature based on the generated control signal.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: July 26, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Do-Hyung Kim, Su-Cheol Yoo, Jung Woo Yoo, Kook Jeong Seo, Chang-Hern Lee, Ha-Jin Jeong
  • Publication number: 20220216479
    Abstract: A negative electrode for a lithium secondary battery having excellent dispersibility, adhesion and tensile strength, and a lithium secondary battery including the same. The negative electrode for a lithium secondary battery includes negative electrode active material particles, a conductive material and a binder. The binder includes a copolymer comprising acrylamide monomer-derived repeating units, acrylic acid monomer-derived repeating units, sodium acrylate monomer-derived repeating units and acrylonitrile monomer-derived repeating units. The combined weight of the acrylic acid monomer-derived repeating units and sodium acrylate monomer-derived repeating units in the copolymer is 25 wt % to 35 wt %. The negative electrode active material particles are silicon-based negative electrode active material particles.
    Type: Application
    Filed: September 3, 2020
    Publication date: July 7, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Chan-Soo JUN, Young-Jae KIM, Ye-Lin KIM, Jung-Woo YOO
  • Publication number: 20220209240
    Abstract: Disclosed is a negative electrode which includes: a negative electrode current collector; and a negative electrode active material layer on the negative electrode current collector. The negative electrode active material layer includes a silicon-based negative electrode active material, a binder, a conductive material, and single-walled carbon nanotubes. The single-walled carbon nanotubes are present in an amount of 0.001 wt % to 1 wt % in the negative electrode active material layer.
    Type: Application
    Filed: June 19, 2020
    Publication date: June 30, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Ye Lin KIM, Jung Woo YOO, Tae Gon KIM, Young Jae KIM
  • Publication number: 20220149376
    Abstract: A negative electrode includes a conductive material for negative electrode, a silicon-based active material, and an aqueous binder, wherein the conductive material for negative electrode includes a first conductive material having a specific surface area of 250 m2/g to 1000 m2/g, a second conductive material having a specific surface area of 55 m2/g to 70 m2/g, and a third conductive material having a specific surface area of 15 m2/g to 20 m2/g. A lithium secondary battery including the negative electrode is also provided.
    Type: Application
    Filed: January 16, 2020
    Publication date: May 12, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Young Jae Kim, Jung Woo Yoo
  • Publication number: 20220082311
    Abstract: A refrigerator includes a main body having a storage compartment formed therein, and a cooling module forming a machine compartment in which a compressor is disposed and detachably mounted to the main body. The cooling module includes a module body forming the machine compartment, a condenser of an L shape disposed on one side of the compressor and including a first part corresponding to a portion of a rear surface of the machine compartment and a second part corresponding to one side of the machine compartment. The condenser is vertically mounted on a base plate disposed below the module body. A module cover is provided to cover the rear of the machine compartment, and a suction flow path includes first and second suction flow paths.
    Type: Application
    Filed: December 18, 2019
    Publication date: March 17, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung Woo YOO, Ju Young KIM, Kook Jeong SEO, Su-Cheol YOO, Won-Jae YOON
  • Patent number: 11258093
    Abstract: An electrode mixture of the present invention comprises: an electrode active material; a binder; and a conductive material. When a cross-section of the electrode mixture is imaged such that a pixel filled 100% with a conductive material among a plurality of divided pixels is considered to be a condensed pixel and a value obtained by counting condensed pixels is considered to be the degree of agglomeration, the degree of agglomeration of a conductive material in the electrode mixture in the depth direction of the electrode mixture has a standard deviation less than 3.0. The electrode mixture as described above includes a conductive material uniformly distributed therein and thus has low electrode resistance. Therefore, the electrode mixture can improve output and lifespan properties of a lithium secondary battery to which the electrode mixture has been applied.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: February 22, 2022
    Inventors: Jung Woo Yoo, Hyeok Moo Lee, Ji Hye Park, Song Taek Oh
  • Publication number: 20220018590
    Abstract: An aspect of the present disclosure is to provide a refrigerator that enables a refrigerating chamber evaporator to replace an existing accumulator and defrost heater by improving a structure of the refrigerating chamber evaporator and a control method. The refrigerator in which a compressor, a condenser, a throttle, a freezing chamber evaporator, and a refrigerating chamber evaporator are connected through a refrigerant passage to form a refrigeration cycle. The refrigerating chamber evaporator may be provided between the freezing chamber evaporator and the compressor. A straight passage of a certain length may be formed at a refrigerant inlet side of the refrigerating chamber evaporator. A curved passage having a plurality of curved sections may be formed at a refrigerant outlet side of the refrigerating chamber evaporator.
    Type: Application
    Filed: November 13, 2019
    Publication date: January 20, 2022
    Inventors: Do-Hyung KIM, Jung Woo YOO, Su-Cheol YOO
  • Publication number: 20220013766
    Abstract: The present invention provides a secondary battery including a negative electrode having a negative electrode active material layer containing a negative electrode active material, a positive electrode facing the negative electrode and having a positive electrode active material layer containing a positive electrode active material, a separator interposed between the negative electrode and the positive electrode, and an electrolyte, wherein the negative electrode active material includes a silicon-based active material and an N/P ratio calculated by a specific equation is 1.92 to 2.60.
    Type: Application
    Filed: March 12, 2020
    Publication date: January 13, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Young Jae KIM, Jung Woo YOO
  • Publication number: 20220013784
    Abstract: The present invention relates to a negative electrode including a negative electrode current collector and a negative electrode active material layer formed on the negative electrode current collector, wherein the negative electrode active material layer includes a silicon-based active material and a negative electrode binder, wherein the negative electrode binder includes an aqueous binder and a rubber-based binder in a weight ratio of 82:18 to 88:12, and the aqueous binder includes at least one selected from the group consisting of polyvinyl alcohol, polyacrylic acid, polyethylene glycol, polyacrylonitrile, and polyacryl amide.
    Type: Application
    Filed: March 12, 2020
    Publication date: January 13, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Young Jae KIM, Jung Woo YOO
  • Publication number: 20210367231
    Abstract: A negative electrode active material that includes an active material core that allows for the intercalation and deintercalation of lithium ions. The negative electrode active material also includes a plurality of conductive materials positioned on a surface of the active material core, a plurality of organic linkers each including a hydrophobic group and a polar functional group bonded to the hydrophobic group, and an elastic unit. The elastic unit includes an elastic moiety having two or more binding sites, and a functional group bonded to a binding site of the elastic moiety. The functional group reacts with the polar functional group of the organic linker, and one or more of the plurality of organic linkers are connected to the conductive materials through the hydrophobic groups of the organic linkers.
    Type: Application
    Filed: December 10, 2019
    Publication date: November 25, 2021
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Yo Han KWON, Dong Chan LEE, In Sung UHM, Jung Woo YOO, Jae Hyun LEE, Je Young KIM
  • Publication number: 20210328225
    Abstract: The present invention relates to a negative electrode including a current collector and a negative electrode active material layer disposed on the current collector, wherein the negative electrode active material layer includes a negative electrode active material, a conductive agent, and a binder, wherein the negative electrode active material includes silicon particles having an average particle diameter (D50) of 4 ?m to 10 ?m, the conductive agent includes carbon nanotubes and a graphite-type conductive agent, and the binder includes a copolymer containing a polyvinyl alcohol-derived unit and an ionized substituted acrylate-derived unit.
    Type: Application
    Filed: September 5, 2019
    Publication date: October 21, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Young Jae KIM, Jung Woo YOO
  • Publication number: 20210313568
    Abstract: Provided is an active material for negative electrode including porous silicon-based particles and carbon particles, wherein the carbon particles include fine carbon particles and coarse carbon particles respectively having different average particle diameters. Since an active material for negative electrode according to an embodiment of the present invention includes porous silicon-based particles as well as fine and coarse carbon particles respectively having different average particle diameters, the contact between the porous silicon-based particles and the carbon particles may be increased. As a result, lifetime characteristics of a lithium secondary battery may be further improved.
    Type: Application
    Filed: June 17, 2021
    Publication date: October 7, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Mi Rim Lee, Hyun Chul Kim, Eun Kyung Kim, Yong Ju Lee, Jung Woo Yoo
  • Patent number: 11024851
    Abstract: A binder composition for a secondary battery which includes a copolymer binder including at least one unit selected from (A) a unit derived from a vinyl-based monomer, (B) a unit derived from a conjugated diene-based monomer or a conjugated diene-based polymer, (C) a unit derived from a (meth)acrylic acid ester-based monomer, and (D) a unit derived from a water-soluble polymer, wherein the copolymer binder has a wet modulus of 0.02 MPa or more, and a negative electrode for a lithium secondary battery and a lithium secondary battery which include the same.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: June 1, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Ji Hee Yoon, Jung Woo Yoo, Je Young Kim
  • Publication number: 20210020907
    Abstract: An electrode includes an electrode active material, wherein the electrode active material layer includes an electrode active material, polyvinylidene fluoride, and a conductive agent, wherein the conductive agent includes a carbon nanotube structure in which 2 to 5,000 single-walled carbon nanotube units are bonded to each other, and the carbon nanotube structure is included in an amount of 0.01 wt % to 0.5 wt % in the electrode active material layer. A secondary battery including the same, and a method of preparing the electrode are also provided.
    Type: Application
    Filed: April 8, 2019
    Publication date: January 21, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Seul Ki Kim, Tae Gon Kim, Je Young Kim, Wang Mo Jung, Jung Woo Yoo, Sang Wook Lee