Patents by Inventor Kwi-Sub YUN

Kwi-Sub YUN 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).

  • Negative electrode active material and negative electrode including the same
    Patent number: 11158847
    Abstract: Composite particles and a negative electrode active material including such particles for an electrochemical device. The negative electrode active material is capable of lithium intercalation/deintercalation and includes composite particles including a carbon phase including a carbonaceous material, silicon (Si) and lithium fluoride (LiF). The Si and LiF may be present as Si—LiF mixed particles, which are dispersed in the carbon phase, wherein the Si—LiF mixed particles are dispersed in the carbon phase with uniform or non-uniform distribution. In addition, the composite particles include the carbon phase mixed uniformly or amorphously with the Si—LiF mixed particles.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: October 26, 2021
    Assignee: LG CHEM, LTD.
    Inventors: So-Ra Lee, Seo-Young Kwon, Jee-Eun Kim, Ji-Young Park, Pil-Kyu Park, Hyeon-Min Song, Kwi-Sub Yun, U-Jin Yoon, Jae-Young Lee, Yong-Ju Lee, Jung-Hyun Choi
  • Method and apparatus for charging battery
    Patent number: 11081735
    Abstract: A method of charging a battery including a plurality of cells, the method including charging the plurality of cells at a plurality of C-rates, respectively; calculating a voltage change of each of the plurality of cells and a slope of the voltage change of each of the plurality of cells; and performing discharging multiple times in a section where a deviation between the slopes of the voltage changes of the plurality of cells is equal to or larger than a predetermined reference value.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: August 3, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Jiyoung Park, Pil Kyu Park, Kwi Sub Yun, So Ra Lee
  • METHOD AND APPARATUS FOR CHARGING BATTERY
    Publication number: 20210104782
    Abstract: A method of charging a battery including a plurality of cells, the method including charging the plurality of cells at a plurality of C-rates, respectively; calculating a voltage change of each of the plurality of cells and a slope of the voltage change of each of the plurality of cells; and performing discharging multiple times in a section where a deviation between the slopes of the voltage changes of the plurality of cells is equal to or larger than a predetermined reference value.
    Type: Application
    Filed: September 20, 2018
    Publication date: April 8, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Jiyoung PARK, Pil Kyu PARK, Kwi Sub YUN, So ra LEE
  • NEGATIVE ELECTRODE ACTIVE MATERIAL AND NEGATIVE ELECTRODE INCLUDING THE SAME
    Publication number: 20190273247
    Abstract: Composite particles and a negative electrode active material including such particles for an electrochemical device. The negative electrode active material is capable of lithium intercalation/deintercalation and includes composite particles including a carbon phase including a carbonaceous material, silicon (Si) and lithium fluoride (LiF). The Si and LiF may be present as Si—LiF mixed particles, which are dispersed in the carbon phase, wherein the Si—LiF mixed particles are dispersed in the carbon phase with uniform or non-uniform distribution. In addition, the composite particles include the carbon phase mixed uniformly or amorphously with the Si—LiF mixed particles.
    Type: Application
    Filed: December 22, 2017
    Publication date: September 5, 2019
    Applicant: LG CHEM, LTD.
    Inventors: So-Ra LEE, Seo-Young KWON, Jee-Eun KIM, Ji-Young PARK, Pil-Kyu PARK, Hyeon-Min SONG, Kwi-Sub YUN, U-Jin YOON, Jae-Young LEE, Yong-Ju LEE, Jung-Hyun CHOI