Patents by Inventor Min-Cheol CHOI

Min-Cheol CHOI 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: 11951508
    Abstract: The present technology relates to an electrode slurry-discharging shim, and a coating die comprising same, the present technology allowing superbly even coating to be assured even when the electrode slurry coating is at a high load level. In one example, the present technology provides a coating shim for electrode slurry discharge according to the present invention having a step portion configured to be formed at an end of an electrode slurry discharge flow path and to increase a width of the discharge flow path, and the step portion is formed at opposite sides in a width direction of the electrode slurry discharge flow path.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: April 9, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: Jong Hwan Choi, In Seong Kim, Min Cheol Choi
  • Publication number: 20230343984
    Abstract: An apparatus for manufacturing a secondary battery is provided. The apparatus comprises a separation sheet supply device configured to supply two separation sheets configured to be disposed vertically. An electrode supply device is configured to supply electrodes to be disposed between the two separation sheets and on a top surface of one of the separation sheets. The one of the separation sheets is disposed at an upper side. A lamination device is configured to bond the two separation sheets and the electrodes to each other. An ultrasonic cutting device is configured to bond surfaces of the two separation sheets to each other and simultaneously cut a bonding surface of the two separation sheets.
    Type: Application
    Filed: June 10, 2021
    Publication date: October 26, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Sang Ho Bae, Joo Young Chung, Tae Jong Kim, Sang Woo Lee, Su Taek Jung, Won Pill Hwang, Min Cheol Choi, Jin Gon Kim, Yong Jun Lee
  • Publication number: 20230207855
    Abstract: A method for manufacturing a secondary battery includes: an accommodating process of accommodating an electrode assembly in a battery case so that an electrode lead connected to the electrode assembly protrudes to both sides of the outside of the battery case; a sealing process of sealing an outer circumferential surface of the battery case after the accommodating process; a coupling process of coupling a coupling clip to the electrode lead after the sealing process; and a transfer process of transferring the cell to a position for a next process after a gripper grips the coupling clip after the coupling process.
    Type: Application
    Filed: May 17, 2021
    Publication date: June 29, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Won Pill Hwang, Sang Woo Lee, Su Taek Jung, Sang Ho Bae, Min Cheol Choi, Jin Gon Kim, Yong Jun Lee
  • Publication number: 20230133623
    Abstract: A method for repairing a secondary battery according to an embodiment of the present invention for solving the above problems includes: a step, in which cracks are formed in an outer surface of a battery case of the pouch-type secondary battery; a step of locally applying a metal solution to the cracks; and a step of drying the metal solution to form a coating part.
    Type: Application
    Filed: April 26, 2021
    Publication date: May 4, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Won Pill Hwang, Sang Woo Lee, Su Taek Jung, Sang Ho Bae, Min Cheol Choi, Jin Gon Kim, Yong Jun Lee
  • Publication number: 20220331832
    Abstract: The present technology relates to an electrode slurry-discharging shim, and a coating die comprising same, the present technology allowing superbly even coating to be assured even when the electrode slurry coating is at a high load level. In one example, the present technology provides a coating shim for electrode slurry discharge according to the present invention having a step portion configured to be formed at an end of an electrode slurry discharge flow path and to increase a width of the discharge flow path, and the step portion is formed at opposite sides in a width direction of the electrode slurry discharge flow path.
    Type: Application
    Filed: December 18, 2020
    Publication date: October 20, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Jong Hwan CHOI, In Seong KIM, Min Cheol CHOI
  • Patent number: 11038242
    Abstract: The present invention relates to an electrode assembly. The electrode assembly comprises: a first separator sheet; and first and second electrode sheets respectively adhering to both sides of the first separator sheet, wherein both the surfaces of the first separator sheet have adhesion different from each other, the first electrode sheet adheres to a first surface, which has relatively high adhesion, of both the surfaces, and the second electrode sheet adheres to a second surface, which has relatively low adhesion, of both the surfaces.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: June 15, 2021
    Inventors: Sang Kyun Lee, Cha Hun Ku, Sang Hun Kim, Tae Kyu Kim, Min Cheol Choi
  • Patent number: 10978749
    Abstract: The present disclosure relates to a method for injecting an electrolyte to a pouch secondary battery which includes the steps of: interposing an electrode assembly between a first metal laminate film and a second metal laminate film forming a pouch casing, and sealing the edges of each of the films with an electrolyte inlet left therein, thereby providing a pouch secondary battery; mounting the pouch secondary battery between a first jig and a second jig, which are installed in a jig stand so as to have a controllable interval and form a gap space, with the electrolyte inlet facing up, and injecting an electrolyte through the electrolyte inlet; loading the jig stand to a vacuum chamber; increasing the width of the gap space by moving the first and the second jigs so that the area occupied by the electrolyte may be localized in the lower part of the pouch casing, and then forming vacuum atmosphere; and moving the first and the second jigs while maintaining the vacuum atmosphere so that the width of the gap spa
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: April 13, 2021
    Inventors: Byeong-Kyu Lee, Kyung-Jae Lee, Su-Taek Jung, Min-Cheol Choi, Cha-Hun Ku
  • Publication number: 20200075909
    Abstract: The present invention relates to an electrode assembly. The electrode assembly comprises: a first separator sheet; and first and second electrode sheets respectively adhering to both sides of the first separator sheet, wherein both the surfaces of the first separator sheet have adhesion different from each other, the first electrode sheet adheres to a first surface, which has relatively high adhesion, of both the surfaces, and the second electrode sheet adheres to a second surface, which has relatively low adhesion, of both the surfaces.
    Type: Application
    Filed: November 8, 2019
    Publication date: March 5, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sang Kyun Lee, Cha Hun Ku, Sang Hun Kim, Tae Kyu Kim, Min Cheol Choi
  • Patent number: 10505170
    Abstract: The present invention relates to an electrode assembly. The electrode assembly comprises: a first separator sheet; and first and second electrode sheets respectively adhering to both sides of the first separator sheet, wherein both the surfaces of the first separator sheet have adhesion different from each other, the first electrode sheet adheres to a first surface, which has relatively high adhesion, of both the surfaces, and the second electrode sheet adheres to a second surface, which has relatively low adhesion, of both the surfaces.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: December 10, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Sang Kyun Lee, Cha Hun Ku, Sang Hun Kim, Tae Kyu Kim, Min Cheol Choi
  • Publication number: 20190131666
    Abstract: The present disclosure relates to a method for injecting an electrolyte to a pouch secondary battery which includes the steps of: interposing an electrode assembly between a first metal laminate film and a second metal laminate film forming a pouch casing, and sealing the edges of each of the films with an electrolyte inlet left therein, thereby providing a pouch secondary battery; mounting the pouch secondary battery between a first jig and a second jig, which are installed in a jig stand so as to have a controllable interval and form a gap space, with the electrolyte inlet facing up, and injecting an electrolyte through the electrolyte inlet; loading the jig stand to a vacuum chamber; increasing the width of the gap space by moving the first and the second jigs so that the area occupied by the electrolyte may be localized in the lower part of the pouch casing, and then forming vacuum atmosphere; and moving the first and the second jigs while maintaining the vacuum atmosphere so that the width of the gap spa
    Type: Application
    Filed: December 11, 2017
    Publication date: May 2, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Byeong-Kyu LEE, Kyung-Jae LEE, Su-Taek JUNG, Min-Cheol CHOI, Cha-Hun KU
  • Publication number: 20180159104
    Abstract: The present invention relates to an electrode assembly. The electrode assembly comprises: a first separator sheet; and first and second electrode sheets respectively adhering to both sides of the first separator sheet, wherein both the surfaces of the first separator sheet have adhesion different from each other, the first electrode sheet adheres to a first surface, which has relatively high adhesion, of both the surfaces, and the second electrode sheet adheres to a second surface, which has relatively low adhesion, of both the surfaces.
    Type: Application
    Filed: July 5, 2016
    Publication date: June 7, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Sang Kyun Lee, Cha Hun Ku, Sang Hun Kim, Tae Kyu Kim, Min Cheol Choi
  • Publication number: 20100059553
    Abstract: A tube-type container having a check function is filled with liquid contents irrespective of the magnitude of viscosity, prevent air flowing inside the container when the liquid contents are used. The container includes a body, an extension tube, a discharge cap, a cover, wings, a fixing member, an operating member, and a spring. The wings are inwardly protrudently formed on the inner wall of the discharge cap and regularly spaced apart from each other, a space formed between the wings. The fixing member is fitted into the wings. The operating member is configured in such way that its upper end is inserted into the fixing member and its lower end forms a closing plate for closing the passage. The spring is placed between the operating member and the fixing member for allowing the operating member to elastically tightly close the passage.
    Type: Application
    Filed: August 31, 2009
    Publication date: March 11, 2010
    Inventor: Min-Cheol CHOI