Patents by Inventor Huihun KIM

Huihun KIM 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).

  • Publication number: 20240396131
    Abstract: The specification discloses a film for a cell pouch and a storage method of the film. According to this disclosure, the efficiency of a slip agent may be improved by controlling the storage temperature after manufacturing the film for a cell pouch. The phenomenon of excessive leakage of the slip agent on the surface is minimized while comprising a small amount of the slip agent. Therefore, the film according to the present disclosure may exhibit excellent formability and at the same time prevents excessive leakage of the slip agent, thereby preventing a decrease in process efficiency due to the slip agent.
    Type: Application
    Filed: May 23, 2024
    Publication date: November 28, 2024
    Applicant: Youlchon Chemical Co., Ltd.
    Inventors: Nok Jung Song, Hee Sik Han, Huihun Kim, Jee Eun Jang, Doohee Lee, Sung Chul Shin, Moonkyu Song
  • Publication number: 20240339701
    Abstract: Disclosed are a film for cell pouch, that may minimize the winding tension applied to the metal layer and the film for the cell pouch, thereby minimizing the mechanical deformation of the metal layer, minimizing the deformation of a film laminate for cell pouch, and that may improve tensile strength and formability according to the improvement in the manufacturing process, and improving curl characteristics before and after molding, according to an improvement in the manufacturing process; a cell pouch including the same; and a method for manufacturing the said film for cell pouch.
    Type: Application
    Filed: April 7, 2024
    Publication date: October 10, 2024
    Applicant: Youlchon Chemical Co., Ltd.
    Inventors: Nok Jung Song, Hee Sik Han, Ji Min Lee, Han Chul Park, Huihun Kim, Doohee Lee, Geon Ryong Kim
  • Publication number: 20240339700
    Abstract: Disclosed are a cell pouch film having improved formability, a method for preparing the same, and a secondary battery using the same. The cell pouch film can suppress the occurrence of cracks in edge portion generated during deep molding, allowing the edge portion to be formed thickly, thereby exhibiting excellent deep molding properties. Since such a cell pouch film can improve the energy density of a secondary battery, it is particularly useful as a medium to large-sized cell pouch for electric vehicles, energy storage devices, and the like.
    Type: Application
    Filed: April 7, 2024
    Publication date: October 10, 2024
    Applicant: Youlchon Chemical Co., Ltd.
    Inventors: Nok Jung Song, Hee Sik Han, Huihun Kim, Sung Chul Shin, Moonkyu Song
  • Publication number: 20240339702
    Abstract: The present disclosure is directed to a film for a cell pouch and a manufacturing method thereof. A cell pouch film and a manufacturing method thereof according to an example embodiment of the present disclosure has good mechanical strength, low deviation in mechanical strength due to low stress on the film, and good formability.
    Type: Application
    Filed: April 7, 2024
    Publication date: October 10, 2024
    Applicant: Youlchon Chemical Co., Ltd.
    Inventors: Nok Jung Song, Hee Sik Han, Huihun Kim, Ji Min Lee, Han Chul Park, Doohee Lee, Geon Ryong Kim, Sung Chul Shin, Moonkyu Song
  • Publication number: 20240222749
    Abstract: A pouch film for a secondary battery, wherein at least an outer layer, a barrier layer, and a sealant layer are structured in this order, the sealant layer includes an extrusion (EC) layer and a polypropylene (PP) layer below the extrusion (EC) layer, having excellent sealing strength at ambient and high temperatures, and having excellent sealing strength maintenance properties at ambient and especially high temperatures, a method for preparing the pouch film, a secondary battery using the pouch film, and a method for manufacturing the same are disclosed. The pouch film for the secondary battery has excellent high temperature long-term reliability in battery pack manufacturing, and can be useful for medium to large-sized batteries.
    Type: Application
    Filed: December 27, 2023
    Publication date: July 4, 2024
    Applicant: Youlchon Chemical Co., Ltd.
    Inventors: Nok Jung Song, Hee Sik Han, Jee Eun Jang, Huihun Kim
  • Publication number: 20240222750
    Abstract: Provided is a secondary battery pouch film in which at least an outer layer, a barrier layer, and a sealant layer are structured in that order, wherein the outer layer includes nylon and polyethylene terephthalate films, the barrier layer is made of aluminum, and the Poisson's ratio is 0.4 to 0.5, a method for preparing the pouch film, a secondary battery using the same, and a method for manufacturing the secondary battery. The cracks at the edge that occur during deep forming of the secondary battery pouch film may be suppressed, and the edge may be formed thick, thereby providing excellent high formability. Since the secondary battery pouch film is capable of improving the energy density of secondary batteries, it is particularly useful as a medium to large-sized secondary battery pouch film for electric vehicles or energy storage devices.
    Type: Application
    Filed: December 28, 2023
    Publication date: July 4, 2024
    Applicant: Youlchon Chemical Co., Ltd.
    Inventors: Nok Jung Song, Hee Sik Han, Huihun Kim, Sung Chul Shin, Moonkyu Song, Ji Min Lee, Han Chul Park, Geon Ryong Kim
  • Publication number: 20240162442
    Abstract: Provided is a cathode for a sodium/sulfur (NaS) battery. The cathode includes polysodium-sulfide polyacrylonitrile (NaxS-PAN, 3?x) obtained by reaction with a large amount of sodium, and is a high-capacity electrode manufactured via sodiation to inject sodium.
    Type: Application
    Filed: March 11, 2022
    Publication date: May 16, 2024
    Inventors: Hyo Jun AHN, Kwon Koo CHO, Changhyeon KIM, Huihun KIM, Minjun SEONG, Minyeong JEON