Patents by Inventor Byoung-Hoon Ahn

Byoung-Hoon Ahn 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: 10888870
    Abstract: The present invention relates to a grinder using induced electric fields. The grinder comprises: a grinding unit on which a plurality of protrusions for cutting are disposed on an outer circumferential surface thereof; a power unit disposed in the grinding unit to generate electric fields and attach the conductive materials to the grinding unit; and a chamber disposed outside the grinding unit and comprising beads that disperse and grind the conductive materials attached to the grinding unit, wherein the conductive materials have directionality by the electric fields of the power unit.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: January 12, 2021
    Inventors: Jin Young Son, Hyung Suk Cho, Sang Hoon Choy, Byoung Hoon Ahn, Hyun Sik Chae
  • Publication number: 20200388522
    Abstract: A bonding apparatus includes a body part; a vacuum hole disposed in the body part; a first protruding part protruding in a first direction from a first surface of the body part; a second protruding part protruding from the first surface of the body part in the first direction and spaced farther apart from a center of the first surface of the body part than the first protruding part in a second direction intersecting with the first direction; and a trench defined by the first surface of the body part and second surfaces of the first protruding part, the second surfaces protruding in the first direction from the first surface of the body part, and the trench being connected to the vacuum hole, wherein the second protruding part protrudes farther from the first surface of the body part in the first direction than the first protruding part.
    Type: Application
    Filed: March 2, 2020
    Publication date: December 10, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seok Geun AHN, Min Keun KWAK, Ji Won SHIN, Sang Hoon LEE, Byoung Wook JANG
  • Patent number: 10822498
    Abstract: The present disclosure relates to a carbon black dispersion solution comprising carbon black, a dispersion medium, and partially hydrogenated nitrile rubber having a residual double bond (RDB) value of 0.5% by weight to 40% by weight calculated according to the following Mathematical Formula 1, wherein dispersed particle diameters of the carbon black have particle size distribution D50 of 0.1 ?m to 2 ?m, a method for preparing the same, and methods for preparing electrode slurry and an electrode using the same.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: November 3, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Gyemin Kwon, Houngsik Yoo, Hye Lim Sim, Byoung Hoon Ahn, Jong Won Lee, Dong Hyun Kim, Sang Hoon Choy, Hyeon Choi
  • Publication number: 20200331759
    Abstract: A method of preparing graphene, including preparing graphite; and putting the graphite in the inside of a vessel and applying vibration at a frequency of 55 Hz to 65 Hz to the vessel.
    Type: Application
    Filed: April 10, 2018
    Publication date: October 22, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Jin Young Son, Cheol Woo Kim, Byoung Hoon Ahn, Hyun Sik Chae, Sang Hoon Choy
  • Patent number: 10804528
    Abstract: Disclosed is a method for preparing positive electrode active material slurry, which includes the steps of: (S1) preparing a positive electrode active material, a linear conductive material, a polymer binder and a solvent; (S2) introducing 40-80% of the prepared polymer binder, the positive electrode active material and the linear conductive material to the solvent, followed by mixing, to obtain a first positive electrode active material slurry; and (S3) further introducing the remaining polymer binder to the first positive electrode active material slurry, followed by mixing, to obtain a second positive electrode active material slurry.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: October 13, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Byoung-Hoon Ahn, Sang-Hoon Choy, Hyun-Sik Chae
  • Publication number: 20200295347
    Abstract: A method of preparing a slurry composition for a secondary battery positive electrode includes preparing a positive electrode active material pre-dispersion by mixing a lithium iron phosphate-based positive electrode active material, a dispersant, and a solvent, and preparing a slurry for a positive electrode by further mixing a conductive agent, a binder, and an additional solvent with the positive electrode active material pre-dispersion is provided. A positive electrode for a secondary battery which is prepared by using the same method, and a lithium secondary battery including the positive electrode are also provided.
    Type: Application
    Filed: March 22, 2018
    Publication date: September 17, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Byoung Hoon Ahn, Houng Sik Yoo, Gye Min Kwon, Sang Hoon Choy
  • Patent number: 10741829
    Abstract: The present invention provides a composition for forming a positive electrode of a secondary battery which includes a positive electrode active material, a conductive material, and a dispersing agent, in which the conductive material includes a carbon-based material having a specific surface area of 130 m2/g or more and an oil absorption number of 220 ml/100 g or more at 0.1 wt % to 2 wt % with respect to the total weight of the composition for forming a positive electrode, and the dispersing agent is introduced into the conductive material to form a conductive material-dispersing agent composite, and the conductive material-dispersing agent composite has a particle size distribution D50 of 0.8 ?m to 1.2 ?m, a positive electrode for a secondary battery and a secondary battery, which are manufactured using the same.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: August 11, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Byoung Hoon Ahn, Sang Hoon Choy, Houng Sik Yoo, Ki Won Sung
  • Publication number: 20200227719
    Abstract: Disclosed is a coating apparatus for producing an electrode, which has a reduced defect rate in the coating process. The coating apparatus includes a die unit having an inlet through which the electrode slurry is introduced and an inner space for accommodating the introduced electrode slurry; a shim unit mounted in the die unit and configured to form an outlet together with the die unit so that the electrode slurry is discharged therethrough; and a cover member configured to surround an outer surface of the die unit and the shim unit so that the electrode slurry is not leaked at the outer surface, except for the outlet.
    Type: Application
    Filed: June 27, 2018
    Publication date: July 16, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Woo-Ha Kim, In-Seong Kim, Il-Jae Moon, Byoung-Hoon Ahn, Jung-Min Yang, Sang-Hoon Choy
  • Patent number: 10693124
    Abstract: The present invention provides a composition for forming a positive electrode of a secondary battery which includes a positive electrode active material, a conductive material, and a dispersing agent, in which the conductive material includes a carbon-based material having a specific surface area of 130 m2/g or more and an oil absorption number of 220 ml/100 g or more at 0.1 wt % to 2 wt % with respect to the total weight of the composition for forming a positive electrode, and the dispersing agent is introduced into the conductive material to form a conductive material-dispersing agent composite, and the conductive material-dispersing agent composite has a particle size distribution D50 of 0.8 ?m to 1.2 ?m, a positive electrode for a secondary battery and a secondary battery, which are manufactured using the same.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: June 23, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Byoung Hoon Ahn, Sang Hoon Choy, Houng Sik Yoo, Ki Won Sung
  • Patent number: 10686185
    Abstract: The present disclosure relates to a carbon nanotube dispersion including entangled-type carbon nanotubes, a dispersion medium, and partially hydrogenated nitrile rubber having a residual double bond (RDB) value of 0.5% by weight to 40% by weight calculated according to the following Mathematical Formula 1, wherein dispersed particle diameters of the carbon nanotubes have particle size distribution D50 of 2 ?m to 5 ?m, a method for preparing the same, and methods for preparing electrode slurry and an electrode using the same.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: June 16, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Houngsik Yoo, Jong Won Lee, Dong Hyun Kim, Gyemin Kwon, Byoung Hoon Ahn, Yelin Kim, Sang Hoon Choy, Hyeon Choi, Jungkeun Yoo
  • Patent number: 10673278
    Abstract: Provided is a wireless power transmission device to reduce an electromagnetic wave except for a signal to be transmitted during wireless power transmission, the wireless power transmission device including a transmitter configured to generate a magnetic field by inputting a high-frequency power signal generated by a transmission circuit into a first coil, a receiver configured to generate an induced current by allowing the generated magnetic field to pass through a second coil, and a reducer configured to reduce a harmonic component of the high-frequency power signal using a third coil inserted on a path between the transmitter and the receiver.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: June 2, 2020
    Assignees: Electronics and Telecommunications Research Institute, DONGYANG E&P INC.
    Inventors: Jung Ick Moon, Seong Uk Baek, Byoung In Lee, Woo Chul Lee, Jong Seup Lee, Dong Woo Cheon, Sang Bong Jeon, Seong Min Kim, Duk Ju Ahn, In Kui Cho, Byung Chan Kim, Je Hoon Yun, Dong Won Jang, Hyung Do Choi
  • Publication number: 20200127281
    Abstract: Provided is a method for preparing positive electrode slurry for a lithium secondary battery which includes the steps of: adding a positive electrode active material, a conductive material, a binder polymer and a dispersing agent to a solvent and mixing them to obtain slurry having a solid content of 69-74 wt %; dispersing the slurry primarily for 50 minutes to 100 minutes so that the migration rate of the solid content may be 3-6 m/s; and dispersing the slurry secondarily for 5 minutes to 20 minutes so that the migration rate of the solid content may be 14-27 m/s, wherein the migration rate of the solid content is the migration length of the solid content caused by the force applied to the slurry in the dispersion system used for dispersing the slurry as a function of time.
    Type: Application
    Filed: June 26, 2018
    Publication date: April 23, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Il-Jae Moon, Woo-Ha Kim, Byoung-Hoon Ahn, Sang-Hoon Choy
  • Publication number: 20200067071
    Abstract: The present disclosure relates to a strip-like electrode for use in a cylindrical jelly roll which includes a strip-like electrode assembly wound cylindrically to form a hollow cavity at the core portion thereof, and a lithium secondary battery including the same. The strip-like electrode includes: a strip-like electrode current collector; a first electrode active material layer formed on at least one surface of the strip-like electrode current collector; and a second electrode active material layer formed on the first electrode active material layer, wherein the second electrode active material layer is formed to have a length smaller than the length of the first electrode active material layer so that a part of one longitudinal surface of the first electrode active material layer can be exposed to the outside.
    Type: Application
    Filed: November 9, 2018
    Publication date: February 27, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Byoung-Hoon AHN, Jung-Min YANG, Sang-Hoon CHOY
  • Patent number: 10573895
    Abstract: The present invention provides a method of preparing an electrode slurry for lithium secondary batteries in which the physical properties of the electrode slurry are improved to minimize a drag line by performing the primary mixing process at high viscosity, a method of manufacturing an electrode of which a defect rate of the electrode is reduced and with which battery stability is improved by using the method of preparing an electrode slurry for secondary batteries, an electrode manufactured using the method, and a secondary battery including the electrode.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: February 25, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Byoung Hoon Ahn, Ki Yeon Jo, Sang Hoon Choy, Hyun Sik Chae
  • Publication number: 20200044238
    Abstract: The present invention provides a method of preparing a slurry for a secondary battery positive electrode which includes forming a first mixture in a paste state by adding a lithium iron phosphate-based positive electrode active material, a conductive agent, a binder, and a solvent, and preparing a slurry for a positive electrode by mixing while further adding a solvent to the first mixture in the paste state.
    Type: Application
    Filed: March 21, 2018
    Publication date: February 6, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Byoung Hoon Ahn, Sang Hoon Choy, Chang Wan Koo, Hyun Chul Ha
  • Publication number: 20200028174
    Abstract: The present invention relates to a positive electrode active material pre-dispersion composition which includes a lithium iron phosphate-based positive electrode active material, a dispersant, and a solvent, wherein the dispersant includes a hydrogenated nitrile butadiene rubber (HNBR), a slurry composition for a secondary battery positive electrode which is prepared by using the positive electrode active material pre-dispersion composition, a positive electrode for a secondary battery, and a lithium secondary battery including the positive electrode.
    Type: Application
    Filed: March 22, 2018
    Publication date: January 23, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Byoung Hoon Ahn, Houng Sik Yoo, Chang Wan Koo, Hyun Chul Ha, Sang Hoon Choy, Jong Won Lee, Dong Hyun Kim, Gye Min Kwon
  • Publication number: 20190323391
    Abstract: An electric oil pump system integrated with a heat exchanger capable of reducing installation space and cost may include: an the electric oil pump including a motor and a pumping part operated by power of the motor to suck and send oil under pressurizing to an oil-used part; and a heat exchanger to exchange heat between the pressurized oil sent by the electric oil pump and coolant cooled at a radiator while the coolant and the pressurized oil pass through the heat exchanger. In particular, the heat exchanger is directly coupled to the electric oil pump and the oil-used part, respectively, and integrated with each other.
    Type: Application
    Filed: November 9, 2018
    Publication date: October 24, 2019
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Sung Hyun AHN, Byoung Hoon CHOI, Seung Jae KANG, Hak Sung LEE, Yeon Ho KIM, Jong Hyun KIM, Tae Ho KIM
  • Patent number: 10263242
    Abstract: Provided is an anode for a lithium secondary battery composed of a multi-layered structure including an electrode current collector, a first anode active material layer including a first anode active material formed on the electrode current collector, and a second anode active material layer including a second anode active material having relatively lower press density and relatively larger average particle diameter than the first anode active material. Since an anode according to an embodiment of the present invention may include a multi-layered active material layer including two kinds of anode active materials having different press densities and average particle diameters on an electrode current collector, porosity of the surface of the electrode may be improved even after a press process to improve ion mobility into the electrode. Thus, charge characteristics and cycle life of a lithium secondary battery may be improved.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: April 16, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Byoung Hoon Ahn, Joon Sung Bae, Chang Wan Koo
  • Publication number: 20190051887
    Abstract: The present disclosure relates to a carbon nanotube dispersion including entangled-type carbon nanotubes, a dispersion medium, and partially hydrogenated nitrile rubber having a residual double bond (RDB) value of 0.5% by weight to 40% by weight calculated according to the following Mathematical Formula 1, wherein dispersed particle diameters of the carbon nanotubes have particle size distribution D50 of 2 ?m to 5 ?m, a method for preparing the same, and methods for preparing electrode slurry and an electrode using the same.
    Type: Application
    Filed: August 26, 2016
    Publication date: February 14, 2019
    Inventors: Houngsik YOO, Jong Won LEE, Dong Hyun KIM, Gyemin KWON, Byoung Hoon AHN, Yelin KIM, Sang Hoon CHOY, Hyeon CHOI, Jungkeun YOO
  • Publication number: 20190020016
    Abstract: Disclosed is a method for preparing positive electrode active material slurry, which includes the steps of: (S1) preparing a positive electrode active material, a linear conductive material, a polymer binder and a solvent; (S2) introducing 40-80% of the prepared polymer binder, the positive electrode active material and the linear conductive material to the solvent, followed by mixing, to obtain a first positive electrode active material slurry; and (S3) further introducing the remaining polymer binder to the first positive electrode active material slurry, followed by mixing, to obtain a second positive electrode active material slurry.
    Type: Application
    Filed: November 16, 2017
    Publication date: January 17, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Byoung-Hoon AHN, Sang-Hoon CHOY, Hyun-Sik CHAE