Patents by Inventor Jea Woan Lee

Jea Woan Lee 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: 20200044225
    Abstract: Various embodiments of the present invention relate to a secondary battery, and the objective of the present invention is to provide a secondary battery, which has drop-impact resistance, by providing an electrode assembly having a relatively thick inner circumferential and a relatively thin outer circumferential tab. To this end, disclosed is a secondary battery, which comprises an electrode assembly comprising: an anode plate having an inner circumferential tab formed at a wound front end thereof; a separator covering the anode plate; and a cathode plate having an outer circumferential tab formed at a wound distal end thereof.
    Type: Application
    Filed: October 17, 2017
    Publication date: February 6, 2020
    Inventors: Soo Mi EO, Seung Hee PARK, Jea Woan LEE, Jae Min LIM, Euy Sun JUNG, Kyung Hoon CHO, Young Kwang CHO, Kyeong Yi HEO
  • Patent number: 10553892
    Abstract: A rechargeable battery includes: an electrode assembly including a separator between a first electrode and a second electrode each having uncoated regions and coated regions, and in which the separator, the first electrode, and the second electrode are spirally wound; a case that houses the electrode assembly; and a first electrode tab and a second electrode tab to be drawn outside of the case that are respectively coupled to the uncoated regions of the first electrode and the second electrode while maintaining a tab gap between the first electrode tab and the second electrode tab, where the first electrode tab is coupled to a gap uncoated region between the coated regions of the first electrode, and where in a thickness direction of the electrode assembly, in an area facing the first electrode tab, an internal side end uncoated region of the second electrode is located.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: February 4, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Soo-Mi Eo, Jea-Woan Lee, Seung-Hee Park, Young-Kwang Cho
  • Patent number: 10454091
    Abstract: A rechargeable battery includes a wound electrode assembly including a separator between a first electrode and a second electrode, the first and second electrodes each including uncoated regions and coated regions; a case accommodating the electrode assembly; and a first electrode terminal and a second electrode terminal respectively coupled to the first and second electrodes and extending from the case, an uncoated region of the first electrode including inner and outer uncoated regions of a terminal end portion located at an outermost side of the electrode assembly, and the second electrode including an outer uncoated region of a terminal end portion facing the inner uncoated region of the first electrode and an additional inner coated region at an opposite side of the outer uncoated region.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: October 22, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seung-Hee Park, Jea-Woan Lee, Chan Hong, Se-Ho Park, Soo-Mi Eo, Young-Kwang Cho, Yi-Seop Ahn, Yu-Mi Ha
  • Publication number: 20160260998
    Abstract: A rechargeable battery includes: an electrode assembly including a separator between a first electrode and a second electrode each having uncoated regions and coated regions, and in which the separator, the first electrode, and the second electrode are spirally wound; a case that houses the electrode assembly; and a first electrode tab and a second electrode tab to be drawn outside of the case that are respectively coupled to the uncoated regions of the first electrode and the second electrode while maintaining a tab gap between the first electrode tab and the second electrode tab, where the first electrode tab is coupled to a gap uncoated region between the coated regions of the first electrode, and where in a thickness direction of the electrode assembly, in an area facing the first electrode tab, an internal side end uncoated region of the second electrode is located.
    Type: Application
    Filed: December 31, 2015
    Publication date: September 8, 2016
    Inventors: Soo-Mi EO, Jea-Woan LEE, Seung-Hee PARK, Young-Kwang CHO
  • Publication number: 20160218386
    Abstract: A rechargeable battery, including an electrode assembly including wound electrodes with a separator therebetween; a pouch housing the electrode assembly; and lead tabs connected to the electrodes and drawn out of the pouch, the lead tabs including an inner tab having a first thickness, connected to the electrode, and drawn out of the electrode assembly.
    Type: Application
    Filed: July 23, 2015
    Publication date: July 28, 2016
    Inventors: Seung-Hee PARK, Jea-Woan LEE, Soo-Mi EO, Young-Kwang CHO
  • Publication number: 20160126528
    Abstract: A rechargeable battery includes a wound electrode assembly comprising a separator between a first electrode and a second electrode, wherein the first and second electrodes each include uncoated regions and coated regions; a case accommodating the electrode assembly; and a first electrode terminal and a second electrode terminal respectively coupled to the first and second electrodes and extending from the case, wherein an uncoated region of the first electrode includes inner and outer uncoated regions of a terminal end portion located at an outermost side of the electrode assembly, and wherein the second electrode includes an outer uncoated region of a terminal end portion facing the inner uncoated region of the first electrode and an additional inner coated region at an opposite side of the outer uncoated region.
    Type: Application
    Filed: October 29, 2015
    Publication date: May 5, 2016
    Inventors: Seung-Hee Park, Jea-Woan Lee, Chan Hong, Se-Ho Park, Soo-Mi Eo, Young-Kwang Cho, Yi-Seop Ahn, Yu-Mi Ha
  • Patent number: 9269985
    Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: February 23, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jae-Yul Ryu, Joon-Sup Kim, Jea-Woan Lee, Jin-Hee Moon, Wan-Uk Choi, Young-Ugk Kim, Chang-Keun Back, Seung-Hee Park, Yong-Bum Lee
  • Publication number: 20160043360
    Abstract: An ultrasonic welding device includes a horn coupled to an ultrasonic wave oscillator. The horn performs ultrasonic welding by respectively disposing a negative electrode tab and a positive electrode tab on a negative electrode lead and a positive electrode lead of a rechargeable battery while pressure is applied. The horn includes a negative electrode horn and a positive electrode horn that respectively press the negative electrode tab and the positive electrode tab. The negative and positive electrode horns are integrally provided in a body and have pressing patterns of different shapes.
    Type: Application
    Filed: June 5, 2015
    Publication date: February 11, 2016
    Inventors: In-Seop BYUN, Wan-Uk CHOI, Jea-Woan LEE, Tae-Gon KIM, Joon-Sup KIM, Young-Chang LIM, Hye-Won KIM
  • Patent number: 9209481
    Abstract: A rechargeable lithium battery including an electrode assembly having a positive electrode including a positive current collector partially coated with a positive active material to form a positive coated region and a positive uncoated region, a negative electrode including a negative current collector partially coated with a negative active material to form a negative coated region and a negative uncoated region and a separator between the positive electrode and the negative electrode. The electrode assembly is spirally wound a plurality of times with the positive uncoated region and the negative uncoated region together forming a core central to the spirally-wound electrode assembly and wound from 3 to 15 times.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: December 8, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Jea-Woan Lee
  • Publication number: 20150140435
    Abstract: A rechargeable lithium battery including a negative electrode, the negative electrode including a silicon-based material and graphite; a positive electrode; and an electrolyte, wherein the negative electrode includes silicon in an amount of greater than 0 wt % and less than or equal to about 2 wt %, based on a total weight of the silicon-based material and the graphite, and the rechargeable lithium battery has a discharge cut-off voltage of greater than or equal to about 3.1 V.
    Type: Application
    Filed: October 27, 2014
    Publication date: May 21, 2015
    Inventors: Jea-Woan LEE, In-Seop BYUN, Chan HONG, Soo-Mi EO, Seung-Hee PARK
  • Patent number: 8980474
    Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a current collector, an active material layer on the current collector and including an amorphous silicon oxide represented by SiOx (0.95<x<1.7), and an SEI layer on the active material layer and including about 70 area % or more of protrusion parts having a size of about 5 nm to 300 nm during charging of the battery.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: March 17, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Tae-Gon Kim, Hee-Joon Chun, Joon-Sup Kim, Wan-Uk Choi, Hisaki Tarui, Jea-Woan Lee, Jae-Yul Ryu, Young-Chang Lim, Seung-Hee Park
  • Publication number: 20150024249
    Abstract: A rechargeable lithium battery includes a positive electrode, a negative electrode, a separator between the positive electrode and the negative electrode, the separator including a porous substrate and a coating layer on at least one side of the porous substrate, the coating layer including a fluorine-based polymer, a ceramic, or a combination thereof; and an electrolyte. The negative electrode includes a current collector, a negative active material layer on the current collector, the negative active material layer including a polyvinylidene fluoride (PVdF) latex particle and an aqueous binder, and a polymer layer on the negative active material layer, the polymer layer including a PVdF latex particle.
    Type: Application
    Filed: June 13, 2014
    Publication date: January 22, 2015
    Inventors: Young-Chang Lim, Jea-Woan Lee, In-Seop Byun, Joon-Sup Kim, Chan Hong, Young-Hwan Kim, Seung-Hee Park
  • Patent number: 8529801
    Abstract: A negative active material of a negative electrode of a rechargeable lithium battery, the negative active material including a metallic active material core and a polymer, having a tensile strength of at least 40 MPa, coated on particles of the metallic active material. The polymer controls the volumetric expansion of the negative active material and enhances the cycle-life characteristics of the battery.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: September 10, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Nam-Soon Choi, Jea-Woan Lee, Kyoung-Han Yew, Sung-Soo Kim
  • Publication number: 20130052533
    Abstract: In one aspect, a negative active material for a lithium secondary battery including silicon oxide represented by a chemical formula SiOx (1.1<x<1.5) and a negative electrode and a lithium secondary battery including the negative active material is provided. The silicon oxide may be amorphous silicon oxide.
    Type: Application
    Filed: February 8, 2012
    Publication date: February 28, 2013
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Hee-Joon Chun, Tae-Gon Kim, Joon-Sup Kim, Wan-Uk Choi, Tarui Hisaki, Jea-Woan Lee, Jae-Yul Ryu, Chang-Keun Back, Young-Chang Lim, Seung-Hee Park
  • Publication number: 20130052508
    Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a current collector, an active material layer on the current collector and including an amorphous silicon oxide represented by SiOx (0.95<x<1.7), and an SEI layer on the active material layer and including about 70 area % or more of protrusion parts having a size of about 5 nm to 300 nm during charging of the battery.
    Type: Application
    Filed: March 29, 2012
    Publication date: February 28, 2013
    Inventors: Tae-Gon Kim, Hee-Joon Chun, Joon-Sup Kim, Wan-Uk Choi, Hisaki Tarui, Jea-Woan Lee, Jae-Yul Ryu, Young-Chang Lim, Seung-Hee Park
  • Publication number: 20130045419
    Abstract: Provided are a negative active material for a rechargeable lithium battery, which includes a first silicon oxide (SiOx) and a second silicon oxide (SiOx) with a particle diameter differing from the one of the first silicon oxide (SiOx), a negative electrode including the negative active material, and a method of manufacturing the negative electrode, and a rechargeable lithium battery including the negative electrode. The first silicon oxide (SiOx) and second silicon oxide (SiOx) have a particle distribution peak area ratio ranging from 3 to 8.
    Type: Application
    Filed: December 19, 2011
    Publication date: February 21, 2013
    Inventors: Hee-Joon Chun, Tae-Gon Kim, Joon-Sup Kim, Wan-Uk Choi, Hisaki Tarui, Jea-Woan Lee, Jae-Yul Ryu, Chang-Keun Back, Young-Chang Lim, Seung-Hee Park
  • Publication number: 20120301792
    Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate.
    Type: Application
    Filed: August 8, 2012
    Publication date: November 29, 2012
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Jae-Yul Ryu, Joon-Sup Kim, Jea-Woan Lee, Jin-Hee Moon, Wan-Uk Choi, Young-Ugk Kim, Chang-Keun Back, Seung-Hee Park, Yong-Bum Lee
  • Patent number: 8268487
    Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: September 18, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jae-Yul Ryu, Joon-Sup Kim, Jea-Woan Lee, Jin-Hee Moon, Wan-Uk Choi, Young-Ugk Kim, Chang-Keun Back, Seung-Hee Park, Yong-Bum Lee
  • Patent number: 8173303
    Abstract: Disclosed is a lithium secondary battery including a positive electrode including a positive active material; a negative electrode including a negative active material; a separator interposed between the positive and negative electrodes; and an electrolyte, where an alkaline metal powder layer is formed by dispersion coating on a surface of at least one of the positive and negative electrodes and the separator.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: May 8, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chung-Kun Cho, Sang-Mock Lee, Young-Gyoon Ryu, Seung-Sik Hwang, Jea-Woan Lee, Yoshiaki Nitta, Joon-Sup Kim, Sung-Soo Kim, Jae-Gu Yoon
  • Publication number: 20110293991
    Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode including a positive active material, a negative electrode including a silicon-based negative active material, an electrolyte including a lithium salt and a non-aqueous organic solvent, and a separator including a polymer substrate and a ceramic-containing coating layer on the polymer substrate. The ceramic-containing coating layer has a porosity at or between about 50% and about 90%, and a thickness at or between about 2 ?m and about 6 ?m. The rechargeable lithium battery has a capacity per volume of more than or equal to about 700 Wh/l.
    Type: Application
    Filed: February 14, 2011
    Publication date: December 1, 2011
    Inventors: Jae-Yul Ryu, Wan-Uk Choi, Joon-Sup Kim, Jea-Woan Lee, Jin-Hee Moon, Chang-Keun Back, Young-Ugk Kim, Seung-Hee Park