Patents by Inventor Dong-Myung Kim

Dong-Myung 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).

  • Patent number: 10319952
    Abstract: Disclosed herein is a battery cell configured to have a structure in which two or more electrode assemblies, each including positive electrodes, negative electrodes, and separators disposed respectively between the positive electrodes and the negative electrodes, are mounted in a battery case, wherein the electrode assemblies are stacked such that electrode terminals of the electrode assemblies are aligned in a vertical direction, one side lower edge of an upper one of the electrode assemblies is disposed in contact with a top surface of a lower one of the electrode assemblies, and one side upper edge of the lower electrode assembly is disposed in contact with a bottom surface of the upper electrode assembly at an interface between the electrode assemblies, and the battery case has an internal shape corresponding to an external shape of the stacked electrode assemblies.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: June 11, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Sungjin Kwon, Dong-Myung Kim, Ki Woong Kim
  • Publication number: 20190148777
    Abstract: Disclosed herein is an electrode assembly configured to have a structure in which a bi-cell and two or more monocells are folded in a state in which the bi-cell and the two or more monocells are arranged on a continuous separation film. The bi-cell includes electrodes in the form of at least one cathode and at least one anode stacked so that a separator is disposed between the cathode and the anode, the bi-cell having a first dimension in a first direction substantially equal to w. The two or more monocells each include electrodes in the form of at least one cathode and at least one anode stacked so that a separator is disposed between the cathode and the anode, each cathode and each anode of each monocell having a first dimension in the first direction substantially equal to 2 times the first dimension w of the bi-cell.
    Type: Application
    Filed: November 12, 2018
    Publication date: May 16, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Sungjin Kwon, Dong-Myung Kim, Ki Woong Kim, Soonho Ahn, Hyang Mok Lee
  • Patent number: 10236533
    Abstract: Disclosed herein is a stacked/folded type electrode assembly configured to have a structure in which two or more unit cells, each of which includes a separator disposed between a positive electrode and a negative electrode, each having an electrode mixture including an electrode active material applied to a current collector, are wound using a sheet type separation film, wherein the positive electrode is configured to have a structure in which a positive electrode mixture is coated on an aluminum foil as the current collector and the negative electrode is configured to have a structure in which a negative electrode mixture is coated on a metal foil, other than the aluminum foil, as the current collector, the unit cells include one or more full-cells and/or bi-cells, one of the unit cells located at each outermost side of the electrode assembly is configured such that one outermost electrode of the unit cell is a single-sided electrode, the single-sided electrode being configured such that the electrode mixtur
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: March 19, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Yu Na Jeong, Moon Young Jung, Dong-Myung Kim, Ki Tae Kim, Sungwon Lee
  • Publication number: 20190040613
    Abstract: A drain pipe assembly for installation of a basin includes: a drain pipe which is inserted in a drain port formed in a base of basin and has a flange of which an upper end is caught by the drain port; and a fastening member which fixes the basin against the flange, wherein the fastening member polls the drain pipe, which is exposed below the basin, in a downward direction, to upwardly press the basin, thereby fastening the basin and the drain pipe.
    Type: Application
    Filed: October 11, 2018
    Publication date: February 7, 2019
    Inventor: Dong Myung KIM
  • Patent number: 10199690
    Abstract: Disclosed herein is an electrode assembly configured to have a structure in which one bi-cell and at least one monocell are folded in a state in which the bi-cell and the monocell are arranged on a continuous separation film.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: February 5, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Sungjin Kwon, Dong-Myung Kim, Ki Woong Kim, Soonho Ahn, Hyang Mok Lee
  • Publication number: 20190020053
    Abstract: There is provided an electrode assembly including a first electrode laminate having at least one or more electrode units having a first area, stacked therein, a second electrode laminate having at least one or more electrode units having a second area smaller than the first area, stacked therein, and a step portion provided by stacking the first electrode laminate and the second electrode laminate in a direction perpendicular to a plane and having a step formed due to a difference in areas of the first and second electrode laminates, the electrode assembly being characterized in that, the electrode unit is wound by a rectangular-shaped separation film such that at least a portion of the rectangular-shaped separation film covers the step portion of the electrode assembly, and a step having a shape identical to the step portion is formed.
    Type: Application
    Filed: September 19, 2018
    Publication date: January 17, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Dong-Myung Kim, Ki-Woong Kim, Soon-Ho Ahn
  • Publication number: 20190006637
    Abstract: According to the present invention, grip feeling of an electronic device to which the battery is mounted may be improved by optimizing a shape of a battery, and miniaturization of the electronic device may be promoted at the same time. In order to achieve the above-described object, a battery is disclosed, the battery including: a first surface having a circumference of a closed curve having a curve; a second surface having a circumference of a closed curve having a curve; and a volume portion configured to connect the first surface to the second surface and defining a volume, wherein at least one of the first surface and the second surface has a circumference of the closed curve defined by connecting ends of each of two curves curved in the same direction to each other, and the first surface has an area different from that of the second surface.
    Type: Application
    Filed: February 20, 2017
    Publication date: January 3, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Yoo Jin AN, Hyung Ku YUN, In Gu AN, Dong Myung KIM
  • Patent number: 10132065
    Abstract: A drain pipe assembly for installation of a basin includes: a drain pipe which is inserted in a drain port formed in a base of basin and has a flange of which an upper end is caught by the drain port; and a fastening member which fixes the basin against the flange, wherein the fastening member pulls the drain pipe, which is exposed below the basin, in a downward direction, to upwardly press the basin, thereby fastening the basin and the drain pipe.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: November 20, 2018
    Inventor: Dong Myung Kim
  • Patent number: 10128526
    Abstract: There is provided an electrode assembly including a first electrode laminate having at least one or more electrode units having a first area, stacked therein, a second electrode laminate having at least one or more electrode units having a second area smaller than the first area, stacked therein, and a step portion provided by stacking the first electrode laminate and the second electrode laminate in a direction perpendicular to a plane and having a step formed due to a difference in areas of the first and second electrode laminates, the electrode assembly being characterized in that, the electrode unit is wound by a rectangular-shaped separation film such that at least a portion of the rectangular-shaped separation film covers the step portion of the electrode assembly, and a step having a shape identical to the step portion is formed.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 13, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Dong-Myung Kim, Ki-Woong Kim, Soon-Ho Ahn
  • Patent number: 10115996
    Abstract: There is provided a stacked and folded type electrode assembly in which at least two first electrode units having a first area and at least two second electrode units having a second area smaller than the first area are wound and stacked together with a rectangular separator. The electrode assembly includes: a first electrode stack in which the first electrode units are stacked; a second electrode stack in which the second electrode units are stacked; and a stepped portion formed by an area difference between the first electrode stack and the second electrode stack, wherein two or more layers of the separator cover the stepped portion, and the separator has the same shape as the stepped portion.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: October 30, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Dong-Myung Kim, Ki-Woong Kim, Soon-Ho Ahn
  • Patent number: 10088493
    Abstract: A method for cell-free protein synthesis is characterized in that pH is controlled by using an enzyme. For example, by using an amino acid decarboxylase, the pH is controlled according to removal of hydrogen ions that are produced during regeneration of ATP. The method for cell-free protein synthesis of the present invention has an advantage that not only the expression amount of protein is enhanced but also the expressed protein can be directly used for activity analysis without undergoing any separation or purification.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: October 2, 2018
    Assignee: THE INDUSTRY & ACADEMIC COOPERATION IN CHUNGNAM NATIONAL UNIVERSITY
    Inventors: Dong-Myung Kim, Taek Jin Kang, Ho-Cheol Kim, Ki Baek Lee
  • Patent number: 10026994
    Abstract: Disclosed herein is an electrode assembly including two or more electrode plates, each of which has electrode tabs, and a separator plate disposed between the electrode plates and/or a one-unit separation sheet disposed between the electrode plates to cover side surfaces of the electrode plates, which constitute an electrode tab non-formation region, wherein the electrode plates are stacked in a height direction on the basis of a plane such that the electrode plates having opposite polarities face each other in a state in which the separator plate and/or the separation sheet is disposed between the electrode plates, a stack constituted by the electrode plates includes electrode plates having different sizes, and an absolute value of the difference in thickness between the electrode plates having different sizes facing each other is 0 to 79 ?m.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: July 17, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Sungjin Kwon, Dong-Myung Kim, Ki-Woong Kim, Soon-Ho Ahn
  • Patent number: 10014556
    Abstract: Disclosed herein is a battery cell configured to have a structure in which an electrode assembly, including positive electrodes, negative electrodes, and separators disposed respectively between the positive electrodes and the negative electrodes, is mounted in a battery case, wherein the battery case includes an upper case and a lower case, the upper case being provided with a first receiving part, in which the electrode assembly is received, the lower case being provided with a second receiving part, in which the electrode assembly is received, the first receiving part and the second receiving part being configured to have structures of different sizes, and the electrode assembly has an external shape corresponding to internal shapes of the first receiving part and the second receiving part.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: July 3, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Sungjin Kwon, Dong-Myung Kim, Ki Woong Kim
  • Patent number: 9972868
    Abstract: Disclosed herein are an electrode stack including at least one positive electrode, at least one negative electrode, and at least one separator, wherein the positive electrode, the negative electrode, and the separator are stacked such that the separator is disposed between the positive electrode and the negative electrode, one end of each of the positive electrode and the negative electrode does not intersect the other end of each of the positive electrode and the negative electrode, a stacked surface of each of the positive electrode, the negative electrode, and the separator includes a curved surface, and the negative electrode has an arc length equal to or greater than that of the positive electrode while the separator has an arc length greater than that of the positive electrode in a state in which the positive electrode, the negative electrode, and the separator are curved, and a battery pack including the same.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: May 15, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Eun Seok Choi, Shin Hyo Cho, Jae Bin Chung, Dong-Myung Kim
  • Patent number: 9966597
    Abstract: There are provided a method of manufacturing a jelly roll-type electrode assembly and a method of manufacturing a secondary battery using the electrode assembly. The method of manufacturing the electrode assembly includes notching a cathode and an anode, elongated in one direction, in a constant size and shape to form a plurality of electrode units, laminating the cathode and the anode with a separator disposed therebetween to form a unit cell, and winding the unit cell by bending the connection units so that the electrode units of the cathode and the anode overlap each other. In the manufacturing of the jelly roll-type electrode assembly and the polymer secondary battery, whose production process can be easily simplified, a jelly roll-type electrode assembly and a polymer secondary battery, both of which exhibit excellent design flexibility, can be manufactured.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: May 8, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Do-Hwa Jung, In-Gu An, Jae-Bin Chung, Soon-Ho Ahn, Dong-Myung Kim
  • Patent number: 9966627
    Abstract: Disclosed herein is a battery cell configured to have a structure in which an electrode assembly, including positive electrodes, negative electrodes, and separators disposed respectively between the positive electrodes and the negative electrodes, is mounted in a battery case, wherein the electrode assembly includes two or more electrodes or unit cells stacked in a height direction when viewed in a plan view, the battery case is provided with a receiving unit, in which electrode assembly is mounted, the electrode assembly is configured to have a quadrangular shape having side (a), side (b), side (c), and side (d) when viewed in a plan view, and inclined such that an interior angle between side (a) of each of the electrode plates or the unit cells, at which an electrode terminal is located, and side (b) adjacent to side (a) is less than 90 degrees, and the receiving unit of the battery case has an internal shape corresponding to a planer shape of the electrode assembly.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: May 8, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Sungjin Kwon, Dong-Myung Kim, Kiwoong Kim
  • Patent number: 9954203
    Abstract: Disclosed herein is an electrode group stack including a plurality of electrode groups, each of which includes a cathode, an anode, and a first separator disposed between the cathode and the anode, and a second separator disposed between the electrode groups, wherein the electrode groups are stacked in a height direction on the basis of a plane, some or all of the electrode groups have different areas of opposite stack surfaces at a stack interface therebetween, and the electrode group stack includes an electrode group satisfying equation (1): T?(Tsum×0.5) (1), where T indicates a thickness of an arbitrary electrode group and Tsum indicates a sum of thicknesses of the electrode groups constituting the electrode group stack.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: April 24, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Sungjin Kwon, Ki Woong Kim, Dong-Myung Kim
  • Patent number: 9947957
    Abstract: Disclosed is a secondary battery having a structure in which a jelly-roll having a cathode/separator/anode structure is mounted in a cylindrical battery case, wherein a plate-shaped insulating member is mounted on the top of the jelly-roll and the insulating member includes a perforated inlet enabling gas discharge and penetration of electrode terminals and a plurality of pores with a diameter of 100 ?m or less provided over the entire surface of the insulating member.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: April 17, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Do Gyun Kim, Dong-Myung Kim, Dong Sub Lee, Sang Bong Nam, Sang Sok Jung
  • Patent number: 9935329
    Abstract: Disclosed herein is an electrode group stack including a stacked structure of electrode groups, each including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode, in which the electrode groups are stacked in a height direction on the basis of a plane such that the positive electrode and the negative electrode face each other in a state in which the separator is disposed between the positive electrode and the negative electrode, wherein the stacked structure of the electrode groups includes electrode groups having different areas at an interface between the electrode groups, and a ratio of capacity to area of the positive electrode and the negative electrode at the interface between the electrode groups (N/P ratio) is equal to or greater than a ratio of capacity to area of a positive electrode and a negative electrode constituting an electrode group having a relatively large area (N/P ratio).
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: April 3, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Sungjin Kwon, Dong-Myung Kim, Kiwoong Kim
  • Patent number: 9929439
    Abstract: There is provided a stepped electrode assembly including: a first electrode stack including at least one first unit cell, the first unit cell including at least one positive electrode and at least one negative electrode having the same area and being alternately stacked in a vertical direction with a separator disposed therebetween; and a second unit cell including at least one positive electrode and at least one negative electrode that are alternately stacked in the vertical direction with a separator disposed therebetween, the second unit cell disposed on a side of the first electrode stack with a separator disposed therebetween, wherein the second unit cell includes a first area electrode having the same area as an electrode area of the first electrode stack and a second area electrode having an area different from the area of the first area electrode, wherein the second unit cell is a stepped unit cell including a stepped portion formed by an area difference between the first and second area electrodes.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: March 27, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Sung-Jin Kwon, Dong-Myung Kim, Ki-Woong Kim, Soon-Ho Ahn