Patents by Inventor Han Ho Lee
Han Ho 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).
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Patent number: 8148004Abstract: The present invention relates to a pouch type secondary cell with high water-resistance. The pouch type secondary cell comprises a positive electrode, a separation layer, and a negative electrode. Here, the sealing unit of the secondary cell includes steps so that the sealing unit has an outer side thinner than an inner side in thickness. The present invention is advantageous in that the manufacture process can be simplified, the water-resistance and sealing property of sealing portions can be further improved, and the manufacture costs can be reduced.Type: GrantFiled: September 9, 2010Date of Patent: April 3, 2012Assignee: LG Chem, Ltd.Inventors: Bo Hyun Kim, Han Ho Lee, Jong Hyun Chae
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Patent number: 8142936Abstract: The present invention relates to a nonaqueous electrolyte solution containing new additives and a lithium secondary battery including the same. More particularly, the invention relates to a nonaqueous electrolyte solution containing a lithium salt, an electrolyte compound, a first additive compound with an oxidation initiation potential of more than 4.2 V, and a second additive compound with an oxidation initiation potential of more than 4.2 V, which is higher in oxidation initiation potential than the first additive, and deposits oxidative products or form a polymer film, in oxidation, as well as a lithium secondary battery including the same. The present invention can provide a lithium secondary battery excellent in both the battery performance and the battery safety in overcharge by the combined use of the first additive and the second battery as additives to the nonaqueous electrolyte solution.Type: GrantFiled: February 10, 2004Date of Patent: March 27, 2012Assignee: LG Chem, Ltd.Inventors: Soon Ho Ahn, Jae Hyun Lee, Jeong Ju Cho, Ho Chun Lee, Mi Young Son, Hyeong Jin Kim, Han Ho Lee
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Publication number: 20120034509Abstract: A separator includes a monolayer-type polyolefin-based micro-porous film having a porosity of 40 to 60%, an average pore diameter of 60 nm or less, and an air permeability of 350 s/100 mL or less; and a porous coating layer formed on at least one surface of the micro-porous film and made of a mixture of a plurality of inorganic particles and a binder polymer. An electrochemical device having the above separator has excellent thermal stability and allows a high power while minimizing the occurrence of leak current.Type: ApplicationFiled: September 3, 2009Publication date: February 9, 2012Applicant: LG CHEM, LTD.Inventors: Yoon-Jung Bae, In-Chul Kim, Seung-Taek Hong, Jong-Hwan Kim, Han-Ho Lee
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Publication number: 20120028133Abstract: Provided are an electrolyte which may prevent the degradation of the battery performance by including a functional group which can react with a side reaction site which is responsible for decomposition of negative electrode material components and a functional group which can react with moisture which is responsible for decomposition of positive electrode material components in an electrolyte of the battery to ensure the stability of the battery at high temperatures, and a secondary battery manufactured by adding the same. The present invention may employ a compound including a functional group which can react with a side reaction site of a negative electrode material and a functional group which can react with moisture to maximize the improvement of the storage performance of a secondary battery at high temperatures.Type: ApplicationFiled: March 2, 2010Publication date: February 2, 2012Applicant: LG CHEM, LTD.Inventors: Yo Jin Kim, Han Ho Lee, Seung Don Choi
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Publication number: 20120015226Abstract: A pouch type lithium secondary battery including a medium- or large-sized battery module includes: a jelly-roll type electrode assembly; a resin-type first packing material that is formed of a two-layer structure having an inner resin layer and an outer resin layer, and for packing the jelly-roll type electrode assembly in the form of a unit cell; and a metal-type second packing material that integrally packs and contains two or more unit cells packed in the first packing material in the form of a module, and prevents moisture and gas penetration by a sealed structure. The pouch type lithium secondary battery is applicable particularly to medium- and large-sized batteries for EVs, p-HEVs, HEVs, and so on.Type: ApplicationFiled: February 10, 2011Publication date: January 19, 2012Applicant: LG Chem, Ltd.Inventors: Sang Hun Kim, Jong Hwan Kim, Han Ho Lee, Jong Hyun Chae
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Publication number: 20110293977Abstract: Provided is a secondary battery including an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The positive electrode includes a positive electrode non-coating portion that is not coated with an active material in a portion of a positive electrode collector. The negative electrode includes a negative electrode non-coating portion that is not coated with an active material in a portion of a negative electrode collector. The non-coating portions are disposed in at least one of upper and lower portions of the electrode assembly in a longitudinal direction of the electrodes. A positive electrode tab and a negative electrode tab are connected to the non-coating portions. The separator is a complex porous separator including a substrate coated with a binder polymer or an organic/inorganic mixture formed of a binder polymer and inorganic particles.Type: ApplicationFiled: December 21, 2009Publication date: December 1, 2011Applicant: LG Chem LtdInventors: Jong Hwan Kim, Han Ho Lee
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Patent number: 8043743Abstract: Provided is a pouch-type secondary battery including an electrode assembly, electrode tabs extending outward from the electrode assembly, a pouch-type battery case for housing the electrode assembly, first sealing portions for sealing the pouch-type battery case and the electrode tabs, and second sealing portions formed at positions with the exception of electrode tab-positioned sites between the first sealing portions and the electrode assembly. The secondary battery is configured to have a structure such that a channel is formed with electrode tab portions by further sealing inside portions of the electrode tabs with the exception of electrode tab-occupied portions. Such a structure allows for easy unidirectional discharge of gases even when the battery inside reaches a certain level of internal pressure due to evolution of gases and enables previous expectation of the gas discharge direction. Therefore, it is possible to provide a secondary battery with improved safety.Type: GrantFiled: December 18, 2008Date of Patent: October 25, 2011Assignee: LG Chem, Ltd.Inventors: Hyun Woo Park, Kwang Ho Yoo, Young Joon Shin, Han Ho Lee
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Publication number: 20110177388Abstract: An anode for a lithium ion secondary battery includes an anode, and a LiF-based coating layer formed with LiF-based particles on a surface of the anode. The LiF-based coating layer has a thickness of 0.05 to 1 ?m. The anode allows the LiF-based coating layer created by side reaction of LiPF6 during a battery charging/discharging process to be relatively uniformly formed on the anode surface, thereby elongating the life cycle of a lithium ion secondary battery.Type: ApplicationFiled: February 24, 2009Publication date: July 21, 2011Applicant: LG CHEM, LTD.Inventors: Yoon-Jung Bae, Han-Ho Lee, Jin-Hyuk Min, Eun-Ju Min, Jong-Seok Jeong
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Publication number: 20110086259Abstract: The present invention relates to a pouch type secondary cell with high water-resistance. The pouch type secondary cell comprises a positive electrode, a separation layer, and a negative electrode. Here, the sealing unit of the secondary cell includes steps so that the sealing unit has an outer side thinner than an inner side in thickness. The present invention is advantageous in that the manufacture process can be simplified, the water-resistance and sealing property of sealing portions can be further improved, and the manufacture costs can be reduced.Type: ApplicationFiled: September 9, 2010Publication date: April 14, 2011Applicant: LG CHEM. LTD.Inventors: Bo Hyun KIM, Han Ho Lee, Jong Hyun Chae
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Publication number: 20110045338Abstract: A separator includes a porous substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous substrate and made of a mixture of a plurality of inorganic particles and a binder polymer, wherein the binder polymer includes a first polyvinylidene fluoride-based copolymer having solubility of 25 weight % or more with respect to acetone at 350 C; a second polyvinylidene fluoride-based copolymer having solubility of 10 weight % or less with respect to acetone at 350 C; and a polymer having a cyano group. This separator decelerates deterioration of life span of an electrochemical device, and prevents disintercalation of inorganic particles in the porous coating layer, thereby improving safety of the electrochemical device.Type: ApplicationFiled: March 3, 2009Publication date: February 24, 2011Applicant: LG CHEM, LTD.Inventors: Yoon-Jung Bae, Pil-Kyu Park, Jong-Hwan Kim, Dong-Hun Han, Han-Ho Lee, Sang-Young Lee, Ji-Sang Yu, Hyun-Min Jang
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Publication number: 20100310930Abstract: Disclosed is a pouch including a first sealing portion wherein an upper sheet and a lower sheet are sealed, and a second sealing portion present in a partial or entire region of the first sealing portion. The pouch further includes a second sealing portion present in a partial or entire region of the first sealing portion, thus efficiently preventing permeation of external moisture and leakage of electrolyte solution through the first sealing portion and enabling fabrication of batteries with improved capacitance maintenance and resistance increase.Type: ApplicationFiled: June 24, 2010Publication date: December 9, 2010Applicant: LG CHEM, LTD.Inventors: Seung Yeob PARK, Han Ho Lee, Young Joon Shin
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Publication number: 20100255368Abstract: Provided is a pouch-type secondary battery including an electrode assembly, electrode tabs extending outward from the electrode assembly, a pouch-type battery case for housing the electrode assembly, first sealing portions for sealing the pouch-type battery case and the electrode tabs, and second sealing portions formed at positions with the exception of electrode tab-positioned sites between the first sealing portions and the electrode assembly. The secondary battery is configured to have a structure such that a channel is formed with electrode tab portions by further sealing inside portions of the electrode tabs with the exception of electrode tab-occupied portions. Such a structure allows for easy unidirectional discharge of gases even when the battery inside reaches a certain level of internal pressure due to evolution of gases and enables previous expectation of the gas discharge direction. Therefore, it is possible to provide a secondary battery with improved safety.Type: ApplicationFiled: December 18, 2008Publication date: October 7, 2010Inventors: Hyun Woo PARK, Kwang Ho Yoo, Young Joon Shin, Han Ho Lee
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Publication number: 20100255382Abstract: Provided is a secondary battery comprising a separator having an inorganic layer wherein active sites of inorganic particles in the inorganic layer are modified into non-reactive sites. Use of the separator leads to improvements in wettability of an electrolyte and thermoelectric stability and storage characteristics of the secondary battery. Provided is also a method of manufacturing the same secondary battery.Type: ApplicationFiled: November 21, 2008Publication date: October 7, 2010Applicant: LG CHEM, LTD.Inventors: Yo Jin Kim, Seung Don Choi, Han Ho Lee
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Patent number: 7773751Abstract: The object of the present invention is providing the apparatus and method for controlling playing and copying the digital audio contents by way of embedding the control code into and extracting the control code from the digital audio contents. To achieve the object of the invention, the present invention includes control code embedding apparatus which includes timing deciding part for distributing control code, control code embedding part and digital audio signal summing part, and control code extracting apparatus which includes distribution information collecting part, control code discerning part, and decoding/instruction generating part.Type: GrantFiled: February 19, 2002Date of Patent: August 10, 2010Assignee: Markany Inc.Inventors: Dong-Hwan Shin, Jong-Weon Kim, Seung-Won Shin, Han-Ho Lee
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Patent number: 7663341Abstract: Disclosed are system and method for adjusting a voltage balancing of cell in a lithium ion multicell battery pack, the system comprising; a multicell battery pack including a master module and a slave module, a CPU located in the system controller and outputting a synchronization signal for each of the cells in the master module and the slave module, a first vertical interface transmitting the synchronization signal outputted from the CPU to the master module, and a second vertical interface transmitting the synchronization signal to the slave module through the first vertical interface.Type: GrantFiled: December 22, 2005Date of Patent: February 16, 2010Assignee: LG Chem, Ltd.Inventors: Dal-Hoon Lee, Han-ho Lee, Jee-ho Kim, Eguchi Yasuhito
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Publication number: 20100028772Abstract: Disclosed herein is a secondary battery including an electrode assembly of a cathode/separator/anode structure mounted in a pouch-shaped battery case in a sealed state, wherein a residue portion, which is not sealed (non-sealing residue portion), is defined between a sealing portion of the battery case and the electrode assembly for collecting generated gas, and the non-sealing residue portion is formed by mounting the electrode assembly between upper and lower laminate sheets, at least one of which has a receiving part of a size approximately corresponding to the electrode assembly, sealing three sides of the upper and lower laminate sheets, including two sides where electrode terminals are disposed, among four sides of the upper and lower laminate sheets, injecting an electrolyte in the battery case through the non-sealing portion, and sealing the non-sealing portion such that the resultant sealing portion is spaced a predetermined width from the receiving part.Type: ApplicationFiled: July 21, 2007Publication date: February 4, 2010Applicant: LG Chem, Ltd.Inventors: Seung-Jin Yang, Jeong Hee Choi, Han-Ho Lee, Ji Heon Ryu
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Patent number: 7638973Abstract: Disclosed is a system for adjusting a voltage balancing of cells in a lithium ion multicell battery pack. The system comprises a vertical interface outputting inputs of a reading balance signal defining a voltage reading period and a balance period and a reading hold signal holding a cell voltage when reading a voltage; an interface outputting an address clock for designating an address of a cell to be controlled and an input of a balance hold signal for independently reading a cell voltage within a voltage balance period; and a control section of a cell balancing adjusting circuit connected to the vertical interface and the interface and receiving signal outputs therefrom to adjust a balancing of cells.Type: GrantFiled: December 22, 2005Date of Patent: December 29, 2009Assignee: LG Chem, Ltd.Inventors: Dal-Hoon Lee, Han-Ho Lee, Jee-Ho Kim, Eguchi Yasuhito
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Patent number: 7535198Abstract: Disclosed is a switching circuit for balancing battery cells. The switching circuit includes plural pairs of switching means, each pair of which are connected to each other in parallel and interrupt a flow of electric current in a bi-direction in order to reduce the internal voltage applied to the switching means. According to the present invention, since the switching elements of low internal voltage can be used for the switching circuit, it is possible to constitute the switching circuit for cell balancing without use of switching elements of high internal voltage and to reduce the number of MOSFETs, thereby making it possible to design the switching circuit effectively. Since the MOSFETs having the low internal voltage and low resistance are used for the switching circuit, it is possible to reduce a loss of the electric current due to the resistance during the cell balancing, thereby improving the balancing efficiency and reducing heat generation.Type: GrantFiled: April 14, 2006Date of Patent: May 19, 2009Assignee: LG Chem, Ltd.Inventors: Dal Hoon Lee, Han Ho Lee, Jee Ho Kim, Eguchi Yasuhito
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Publication number: 20080303484Abstract: Disclosed is a system for adjusting a voltage balancing of cells in a lithium ion multicell battery pack. The system comprises a vertical interface outputting inputs of a reading balance signal defining a voltage reading period and a balance period and a reading hold signal holding a cell voltage when reading a voltage; an interface outputting an address clock for designating an address of a cell to be controlled and an input of a balance hold signal for independently reading a cell voltage within a voltage balance period; and a control section of a cell balancing adjusting circuit connected to the vertical interface and the interface and receiving signal outputs therefrom to adjust a balancing of cells.Type: ApplicationFiled: December 22, 2005Publication date: December 11, 2008Applicant: LG CHEM, LTD.Inventors: Dal-Hoon Lee, Han-Ho Lee, Jee-Ho Kim, Eguchi Yasuhito
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Patent number: 7386729Abstract: For the purpose of designing watermark to be robust against image modification such as geometric modification (rotating, cutting, enlarging/shrinking, etc.), compression, and blurring, the watermark is embedded in frequency domain after formed as 2 dimensional shape, for example radial or concentric shape. In detecting watermark, it is possible to effectively detect the watermark, by using relation to a generated watermark in case where the peak is detected.Type: GrantFiled: April 22, 2002Date of Patent: June 10, 2008Assignee: Markany, Inc.Inventors: Jung-Soo Lee, Jong-Uk Choi, Han-Ho Lee