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).

  • Cap assembly of novel structure and cylindrical battery employed with the same
    Patent number: 8968898
    Abstract: Disclosed herein is a cap assembly disposed at an open upper end of a cylindrical container of a battery in which an electrode assembly (jelly roll) of a cathode/separator/anode structure is mounted in the cylindrical container, wherein an electrode lead of the jelly roll is electrically connected to the lower end of a safety vent having notches, which are ruptured to discharge high pressure gas when high pressure is generated in the battery, and a safety element to interrupt current at a predetermined temperature is provided between the safety vent and the electrode lead.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: March 3, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Dong Sub Lee, Dong-Myung Kim, Jae Dong Chang, Jun Ho Moon, Sang Sok Jung
  • Stepped electrode assembly having predetermined a thickness ratio in the interface between electrode units, battery cell and device comprising the same
    Patent number: 8945743
    Abstract: There are provided an electrode assembly, and a battery cell, a battery pack, and a device. The electrode assembly includes a combination of two or more types of electrode units having different areas, wherein the electrode units are stacked such that steps are formed, and electrode units are formed such that a positive electrode and a negative electrode face one another at an interface between the electrode units.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: February 3, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Soon-Ho Ahn, Dong-Myung Kim, Ki-Woong Kim, Young-Hoon Kim, Sung-Han Yoon, Seung-Min Ryu
  • Electrode assembly having stepped portion, as well as battery cell, battery pack, and device including the electrode assembly
    Patent number: 8945744
    Abstract: There is provided an electrode assembly. The electrode assembly includes a stack of unit cells respectively including at least one negative electrode and at least one positive electrode, alternately stacked, wherein at least one separator is placed on each of both sides of the electrodes, and at least one of the unit cells has an area different from that of an adjacent unit cell to form at least one stepped portion on the electrode assembly. In addition, there are also provided a battery cell, a battery pack, and a device that include the electrode assembly.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: February 3, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Young-Hoon Kim, Soon-Ho Ahn, Dong-Myung Kim, Ki-Woong Kim, Sung-Han Yoon, Seung-Min Ryu
  • METHOD OF MANUFACTURING JELLY ROLL-TYPE ELECTRODE ASSEMBLY AND METHOD OF MANUFACTURING JELLY ROLL-TYPE POLYMER SECONDARY BATTERY
    Publication number: 20150026970
    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: Application
    Filed: September 25, 2014
    Publication date: January 29, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Do-Hwa Jung, In-Gu An, Jae-Bin Chung, Soon-Ho Ahn, Dong-Myung Kim
  • STEPPED ELECTRODE ASSEMBLY HAVING PREDETERMINED A THICKNESS RATIO IN THE INTERFACE BETWEEN ELECTRODE UNITS, BATTERY CELL AND DEVICE COMPRISING THE SAME
    Publication number: 20150010799
    Abstract: There are provided an electrode assembly, and a battery cell, a battery pack, and a device. The electrode assembly includes a combination of two or more types of electrode units having different areas, wherein the electrode units are stacked such that steps are formed, and electrode units are formed such that a positive electrode and a negative electrode face one another at an interface between the electrode units.
    Type: Application
    Filed: September 26, 2014
    Publication date: January 8, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Soon-Ho Ahn, Dong-Myung Kim, Ki-Woong Kim, Young-Hoon Kim, Sung-Han Yoon, Seung-Min Ryu
  • ELECTRODE ASSEMBLY, BATTERY AND DEVICE INCLUDING THE SAME
    Publication number: 20150010800
    Abstract: The present disclosure relates to an electrode assembly formed by stacking a plurality of electrode units, the electrode assembly including: two or more steps formed by stacking three or more types of the electrode units having different areas, wherein an array of electrode units having a maximum area among the electrode units is positioned in the interior of the electrode assembly, and electrodes having different polarities face each other at an interface between the electrode units having different areas.
    Type: Application
    Filed: September 26, 2014
    Publication date: January 8, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Hyun Park, In-Gu An, Dong-Myung Kim, Jae-Bin Chung
  • ELECTRODE ASSEMBLY OF NOVEL STRUCTURE AND BATTERY CELL COMPRISING THE SAME
    Publication number: 20140342215
    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: Application
    Filed: August 4, 2014
    Publication date: November 20, 2014
    Inventors: Sungjin Kwon, Dong-Myung Kim, Ki Woong Kim, Soonho Ahn, Hyang Mok Lee
  • BATTERY CASE FOR SECONDARY BATTERY
    Publication number: 20140304980
    Abstract: Disclosed herein is a battery case including a receiving part having an electrode assembly mounted therein, wherein the receiving part, which is formed by deforming a sheet type base material, is configured to have a stair-like structure in which at least one corner and/or surface forming a shape of the receiving part is deformed.
    Type: Application
    Filed: June 25, 2014
    Publication date: October 16, 2014
    Inventors: Young Hoon KIM, Sungjin KWON, Dong-Myung KIM, Ki Woong KIM, Hyun PARK, Soonho AHN
  • BATTERY CASE FOR SECONDARY BATTERY
    Publication number: 20140308577
    Abstract: Disclosed herein is a battery case including a receiving part having an electrode assembly mounted therein, wherein the receiving part, which is formed by deforming a sheet type base material, is configured to have a stair-like structure in which at least one corner and/or surface forming a shape of the receiving part is deformed.
    Type: Application
    Filed: June 25, 2014
    Publication date: October 16, 2014
    Inventors: Young Hoon KIM, Sungjin KWON, Dong-Myung KIM, Ki Woong KIM, Hyun PARK, Soonho AHN
  • Stepped Electrode Group Stack
    Publication number: 20140255756
    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: Application
    Filed: March 18, 2013
    Publication date: September 11, 2014
    Inventors: Sungjin Kwon, Ki Woong Kim, Dong-Myung Kim
  • Battery for portable terminal
    Patent number: D715732
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: October 21, 2014
    Assignee: LG Chem Ltd.
    Inventors: Sung-Jin Kwon, Ki-Woong Kim, Dong-Myung Kim
  • Battery for portable terminal
    Patent number: D715733
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: October 21, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Ki-Woong Kim, Dong-Myung Kim
  • Battery for portable terminal
    Patent number: D716221
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: October 28, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Ki-Woong Kim, Dong-Myung Kim
  • Battery for portable terminal
    Patent number: D716222
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: October 28, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Ki-Woong Kim, Dong-Myung Kim
  • Battery for portable terminal
    Patent number: D716223
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: October 28, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Se-Young Ahn, Dong-Myung Kim, Yoo-Jin An, In-Gu An, Jae-Bin Chung, Eun-Seok Choi
  • Battery for portable terminal
    Patent number: D716721
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: November 4, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Ki-Woong Kim, Dong-Myung Kim
  • Battery for portable terminal
    Patent number: D716722
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: November 4, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Ki-Woong Kim, Dong-Myung Kim
  • Battery for portable terminal
    Patent number: D716723
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: November 4, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Ki-Woong Kim, Dong-Myung Kim
  • Battery for portable terminal
    Patent number: D716724
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: November 4, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Ki-Woong Kim, Dong-Myung Kim
  • Battery for portable terminal
    Patent number: D724022
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: March 10, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Jin Kwon, Ki-Woong Kim, Dong-Myung Kim