Plural Concentric Or Single Coiled Electrode Patents (Class 429/94)
  • Patent number: 9960411
    Abstract: A method of manufacturing a negative electrode for a nonaqueous electrolyte secondary battery includes: preparing a copper foil having a first main surface and a second main surface that are opposite sides of the copper foil; obtaining a granulated body by mixing a negative electrode active material, a thickener, a binder, and a solvent with each other to obtain a mixture and by granulating the mixture; obtaining a first negative electrode mixture layer by pressing the granulated body; arranging the first negative electrode mixture layer on the first main surface; and softening the copper foil by bringing the second main surface into contact with a heated roller in a state where the first negative electrode mixture layer is arranged on the first main surface. A temperature of the heated roller is a recrystallization temperature of the copper foil or higher.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: May 1, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroya Umeyama, Naoto Onodera, Naoyuki Wada, Yusuke Fukumoto, Tatsuya Hashimoto, Yuji Yokoyama
  • Patent number: 9941505
    Abstract: A battery includes a shell, a core and a protection component received in the shell. The core includes a first electrode tab connected to a first current collector and a second electrode tab connected to a second current collector of the core. The protection component includes two insulating layers and a conducting layer disposed between two insulating layers. The conducting layer defines a first end electrically connected to the first electrode tab and a second end configured as a free end, and an outmost current collector of the core is configured by the second current collector.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: April 10, 2018
    Assignee: BYD COMPANY LIMITED
    Inventors: Xi Shen, Luxia Jiang, Jianhua Zhu, Shichao Hu, Gaowu Wang, Hongjuan Gu
  • 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: 9912005
    Abstract: A method of manufacturing a curved secondary battery, the method including preparing a flat secondary battery such that the flat secondary battery includes an electrode assembly and a pouch accommodating the electrode assembly; primary shaping the secondary battery such that the primary shaping includes disposing the flat secondary battery in a first jig, and pressing the flat secondary battery to form a primarily-shaped secondary battery such that the primarily-shaped secondary battery has a first curvature radius; secondary shaping the secondary battery such that the secondary shaping includes disposing the primarily-shaped secondary battery in a second jig, and pressing the primarily-shaped secondary battery to form a secondarily-shaped secondary battery having a second curvature radius; and maintaining the secondarily-shaped secondary battery after forming thereof in the second jig for a predetermined time period.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: March 6, 2018
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Jun-Hee Han, In-Seop Byun, Kwang-Hoon Choi, Yong-Kyun Park, Seung-Ho Na, Jin-Ju Jeong
  • Patent number: 9905827
    Abstract: An energy storage apparatus includes: an energy storage device including a flat electrode assembly in which electrodes are layered and a prismatic case in which the electrode assembly is housed; and a spacer arranged adjacently to the energy storage device in a first direction, wherein the spacer is formed such that a thickness size in the first direction of a center portion of the spacer in a second direction, which is a direction orthogonal to the first direction and is a direction parallel to a surface of the spacer that faces the energy storage device, is set larger than a thickness size in the first direction of other portions of the spacer arranged adjacently to the center portion of the spacer in the second direction, and a width of the center portion of the spacer in a third direction orthogonal to the first and second directions at a contact portion of the spacer with the energy storage device is set smaller than a width of the case in the third direction.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: February 27, 2018
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Taro Yamafuku, Takeshi Sasaki
  • Patent number: 9905838
    Abstract: An electrode includes: an electrode plate; a conductive layer formed on the electrode plate; and an active material layer formed continuously on the electrode plate and on the conductive layer, and the electrode plate includes an uncoated region where a surface of the electrode plate is exposed.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: February 27, 2018
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Toshinori Bando, Yoshikatsu Ohtani, Kazuya Okabe
  • Patent number: 9899641
    Abstract: According to one embodiment, there is provided a battery. The battery includes a metallic outer can, a wound electrode group, a positive electrode-lead, a negative electrode-lead, a positive electrode insulating cover, and a negative electrode insulating cover.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: February 20, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tatsuya Shinoda, Hideyuki Ishii, Kengo Kurata, Yoshiaki Asami, Tsutomu Matsui, Eiki Kashiwazaki, Kenichi Takahashi
  • Patent number: 9882224
    Abstract: In accordance with an example embodiment of the present invention, an apparatus is disclosed. The apparatus includes a single battery ribbon and vacuum packaging. The single battery ribbon includes a first portion, a second portion, and an interconnecting portion between the first portion and the second portion. The first portion includes a first block. The second portion includes a second block. The first portion, the second portion, and the interconnecting portion form a continuous single layer including an anode and a cathode. The vacuum packaging surrounds the single battery ribbon. The vacuum packaging includes a middle connecting portion configured to contact a first side of the interconnecting portion and a second opposite side of the interconnecting portion.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: January 30, 2018
    Assignee: Nokia Technologies Oy
    Inventors: Piers Andrew, Pritesh Hiralal, Yinglin Liu, Darryl Cotton
  • Patent number: 9865847
    Abstract: A lithium-ion battery outer package material, provided with: a base layer, and a first adhesive layer, a metallic foil layer, a corrosion prevention treatment layer, a second adhesive layer, and a sealant layer sequentially layered on one of the surfaces of the base layer. When a tensile test (a sample of the substrate layer is stored for 24 hours in a 23° C. and 40% RH environment; a tensile test is subsequently performed in a 23° C. and 40% RH environment with the specimen width being 15 mm, the distance between gauge points being 50 mm, and the tensile speed being 100 mm/min; and the tensile elongation and tensile stress of the specimen are measured) is performed, the tensile elongation in a first direction, which is either the TD direction or the MD direction of the sample, relative to the length of the sample is from about not less than 50% to less than 80%, and the tensile stress in a second direction, which is perpendicular to the first direction, is from about not less than 150 to 230 MPa.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: January 9, 2018
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventor: Tomoaki Taniguchi
  • Patent number: 9865848
    Abstract: A seal tape capable of preventing an electrode assembly from moving in a secondary battery, and a secondary battery using the same are disclosed. The seal tape for a secondary battery is attached to the outer surface of the electrode assembly which is received in a battery case, and includes a first adhesive layer having an adhesive surface adhered to the outer surface of the electrode assembly, a second adhesive layer having an adhesive surface at a side opposite to the adhesive surface of the first adhesive layer so as to adhere to an inner surface of the battery case, and a protective layer formed on the second adhesive layer, wherein the protective layer is entirely or partially removed by reating with an electrolyte of the secondary battery.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: January 9, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Jong Kim, Cha-Hun Ku
  • Patent number: 9865859
    Abstract: A structure with suppressed thickness and high-density when battery cells of a thin-film-solid secondary battery are stacked. Adjacent battery cells are stacked such that negative electrodes are in contact with each other and positive electrodes are in contact with each other, and arranged such that a taking-out lead electrode smaller than negative or positive electrode surfaces are sandwiched between two negative electrodes in contact with each other or two positive electrodes in contact with each other, and the lead electrodes sandwiched between electrodes of different layers are arranged such that there is no region where all of the lead electrodes simultaneously overlap one another as viewed in a planar arrangement. There are a strip-shaped lead electrode and a linear lead electrode. Further, a conductive sheet forming the electrode is extended to also serve as the taking-out electrode, thereby making it possible to reduce the number of lead electrodes.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: January 9, 2018
    Assignees: KABUSHIKI KAISHA NIHON MICRONICS, GUALA TECHNOLOGY CO., LTD.
    Inventors: Tomokazu Saitoh, Shozo Izumo, Tatsuo Inoue, Akira Nakazawa
  • Patent number: 9825266
    Abstract: A battery pack includes at least one battery module, a housing accommodating the at least one battery module therein, a controller to control the at least one battery module, a partition positioned between the controller and the at least one battery module, and a connector at least partially passing through the partition, the connector electrically connecting the at least one battery module with the controller.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: November 21, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventor: Jang-Gun Ahn
  • Patent number: 9799926
    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 separator is laminated to one surface or opposite surfaces of at least one of the electrodes, 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, and a stacked surface of each of the positive electrode, the negative electrode, and the separator includes a curved surface, and a battery cell including the same.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: October 24, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Eun Seok Choi, Shin Hyo Cho, Byung O Park, Jae Bin Chung, Dong-Myung Kim
  • Patent number: 9793569
    Abstract: A battery includes positive and negative external terminals having exposed portions exposed from a casing to the outside, positive and negative current collectors connected to the external terminals, and electrode assemblies having positive and negative electrodes and a separator. The positive and negative electrodes are wound with the separator being interposed so as to have positions shifted to opposite sides in a width direction to the separator. Formed in the casing is a narrowly elongated gap extending between the positive current collector side and the negative current collector side. The positive electrode side of the gap is closed by a closure member. A foreign material is prevented from moving without decreasing an electric capacity of the battery and deteriorating injection property of an electrolytic solution.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: October 17, 2017
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Keita Hamakawa, Noriyoshi Munenaga, Satoru Kawakami, Tomoko Nishikawa
  • Patent number: 9774030
    Abstract: A nonaqueous electrolyte secondary battery of an embodiment includes an exterior member; a positive electrode housed in the exterior member, a negative electrode containing an active material and housed in the exterior member so as to be spatially separated from the positive electrode via a separator, and a nonaqueous electrolyte filled in the exterior member. The negative electrode includes a negative electrode current collector and a negative electrode active material layer on the negative electrode current collector. A tensile strength of the negative electrode is 400 N/mm2 or more and 1200 N/mm2 or less. A peel strength between the negative electrode current collector and the negative electrode active material layer is 1.5 N/cm or more and 4 N/cm or less.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: September 26, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinsuke Matsuno, Takashi Kuboki, Keiko Okamoto, Norikazu Osada, Sara Yoshio
  • Patent number: 9755196
    Abstract: A rechargeable battery includes an electrode assembly that performs charging and discharging operations, a case having the electrode assembly enclosed therein, a cap plate coupled with an opening of the case, an electrode terminal on the cap plate, and a current collecting member connecting the electrode assembly to the electrode terminal. The current collecting member includes a terminal connecting part connected to the electrode terminal, and an electrode connecting part connected to an uncoated region of the electrode assembly, the electrode connecting part including a twisted surface, the twisted surface facing a sidewall of the case at a predetermined inclination angle with respect to a direction from the sidewall toward an end of the uncoated region.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: September 5, 2017
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Min-Hyung Guen
  • Patent number: 9755267
    Abstract: The present disclosure provides a cable-type secondary battery, comprising: an inner electrode; a separation layer surrounding the outer surface of the inner electrode to prevent a short circuit between electrodes; and a sheet-form outer electrode spirally wound to surround the separation layer or the inner electrode.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: September 5, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Yo-Han Kwon, Hye-Ran Jung, Eun-Kyung Kim, Je-Young Kim, Hyo-Mi Kim
  • Patent number: 9748552
    Abstract: A battery includes a shell, a core received in the shell and having first and second electrode tabs, and first and second protection components. Each of the first and second protection components includes two insulating layers and a conducting layer disposed between two insulating layers. The conducting layer of the first protection component defines a first end electrically connected to the first electrode tab and a second end configured as a free end. The conducting layer of the second protection component defines a first end electrically connected to the second electrode tab and a second end configured as a free end.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: August 29, 2017
    Assignee: BYD COMPANY LIMITED
    Inventors: Xi Shen, Luxia Jiang, Jianhua Zhu, Shichao Hu, Gaowu Wang, Hongjuan Gu
  • Patent number: 9748610
    Abstract: A spirally-wound lithium battery includes: a bottomed cylindrical cell can doubling as an anode current collector; and a strip-shaped electrode body including an anode and a cathode arranged faced each other via a separator, the anode including an anode active material of lithium metal or alloy, the cell can being sealed, with a non-aqueous organic electrolyte, containing the electrode body wound in a longitudinal direction, the electrode body being wound from a winding axis side around the axis in a vertical direction, an extending direction of a cell can cylindrical axis, such that the anode is arranged at an outermost circumference, the electrode body is attached with a conductor, continuously extending in the longitudinal direction thereof, on an outer circumferential surface of the anode, from a winding end of the anode to an area thereof opposed to an inner surface of the cathode on its winding end side.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: August 29, 2017
    Assignee: FDK Corporation
    Inventors: Yoshie Fujita, Nobuhiro Nishiguchi, Satoshi Sunada, Takahide Kobashi
  • Patent number: 9728766
    Abstract: Provided is a pouch type lithium secondary battery having a tubular passage structure. The pouch type lithium secondary battery having a tubular passage structure includes: a tubular passage structure having a passage of injecting an electrolyte from an outer portion of a pouch and discharging gas from an inner portion of the pouch by communicating the inner portion of the pouch with the outer portion of the pouch.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: August 8, 2017
    Assignee: SK Innovation Co., LTD.
    Inventors: Ju-Young Choi, Ru-Ri Lee, Chang-Mook Hwang
  • Patent number: 9698406
    Abstract: An electrode assembly and a method of manufacturing the same are provided. The electrode assembly includes an electrode stack including at least one anode, at least one cathode, and at least one separation film and a plurality of cathode tabs and a plurality of anode tabs for electrically connecting the electrode stack. In this case, the electrode tabs are arranged to allow the electrode tabs having the same polarity to be electrically connected to one another while a portion of the electrode tabs having the same polarity are arranged so as not to overlap one another on the same plane.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: July 4, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Young-Hoon Kim, Sung-Jin Kwon, Soon-Ho Ahn, Dong-Myung Kim, Ki-Woong Kim, Seung-Min Ryu
  • Patent number: 9692057
    Abstract: A negative electrode collector using a copper-covered steel foil for carrying a negative electrode active material for lithium ion secondary batteries has a steel sheet as the core material thereof and has, on both surfaces thereof, a copper covering layer having a mean thickness tCu of from 0.02 to 5.0 ?m on each surface, and of which the total mean thickness, t, including the copper covering layer 7 is from 3 to 100 ?m with tCu/t of at most 0.3. The steel sheet can be common steel, austenitic stainless steel, or ferritic stainless steel. The copper covering layer can be a copper electroplating layer (including one rolled after plating). On the surface of the copper covering layer, for example, a carbon-based active material layer that has been densified through strong roll pressing is formed, and the copper-covered steel foil and the carbon-based active material layer constitute the negative electrode collector.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: June 27, 2017
    Assignee: NISSHIN STEEL CO., LTD.
    Inventors: Sho Majima, Takao Tsujimura, Takeshi Shimizu, Yoshikazu Morita, Takahiro Fujii, Norihiro Kon, Yoshie Yoshida
  • Patent number: 9680144
    Abstract: An electrode assembly that includes a positive electrode assembly including a number of positive electrodes each having a positive electrode non-coating portion at a certain position, and a positive electrode tab coupling all the positive electrode non-coating portions, a negative electrode assembly including a plurality of negative electrodes each having a negative electrode non-coating portion at a certain position, and a negative electrode tab coupling all the negative electrode non-coating portions, and a separator disposed between each positive electrode and each negative electrode to insulate a region between the positive electrode and the negative electrode. The positive electrodes of the positive electrode assembly and the negative electrodes of the negative electrode assembly are stacked alternately.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: June 13, 2017
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Hosik Shin
  • Patent number: 9680153
    Abstract: A nonaqueous electrolyte secondary battery includes a power generating element including a positive electrode having a positive electrode active material layer and a negative electrode having a negative electrode active material layer. A main plane having the smaller area, between a main plane of the positive electrode active material layer and a main plane of the negative electrode active material layer, has an approximately rectangular shape with a short side having a length of 132 mm or more. The positive electrode active material layer and the negative electrode active material layer are provided such that the main plane of the positive electrode active material layer and the main plane of the negative electrode active material layer face each other with a separator interposed therebetween, and the positive electrode active material layer contains a binder in an amount of 2 mass % or more and 3.5 mass % or less.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: June 13, 2017
    Assignee: AUTOMOTIVE ENERGY SUPPLY CORPORATION
    Inventors: Yuji Tanjo, Yoshihiro Niida
  • Patent number: 9672993
    Abstract: An electrical storage device includes a casing that has an opening, an electrode assembly that is placed inside the casing, a terminal plate that is electrically connected to the electrode assembly, and a holder that is provided to surround the terminal plate, the terminal plate having a step or a slope in an area in which the terminal plate comes in contact with the holder.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: June 6, 2017
    Assignee: JM ENERGY CORPORATION
    Inventors: Kenji Nansaka, Takashi Chiba
  • Patent number: 9647261
    Abstract: The present invention provides a non-aqueous electrolyte secondary battery that comprises a positive electrode sheet comprising a positive electrode active material layer, and a negative electrode sheet comprising a negative electrode active material layer. The positive electrode sheet and the negative electrode sheet are arranged such that the positive electrode active material layer and the negative electrode active material layer face each other. The negative electrode active material layer comprises a face-to-face region NF that faces the positive electrode active material layer and a non-face-to-face region NNF that does not face the positive electrode active material layer. The non-face-to-face region NNF includes a high density part NHD having a density higher than that of the region face-to-face NF.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: May 9, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke Ohara, Tatsuya Hashimoto, Yuji Yokoyama, Yusuke Fukumoto
  • Patent number: 9634298
    Abstract: A sealed battery including: an electrode group 4 formed by winding or stacking a positive electrode plate 1 and a negative electrode plate 2 with a separator 3 interposed between the positive electrode plate 1 and the negative electrode plate 2, and housed in a battery case 5, an opening of the battery case 5 being sealed with a sealing plate, wherein a lead 11 extending from one of the electrode plates in the electrode group 4 is laser-welded to the sealing plate 10, and a melting width of an end section 13 of a welded portion 9 between the lead 11 and the sealing plate 10 is smaller than a melting width of a center section of the welded portion 9.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: April 25, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yukio Harima, Koji Funami, Seiji Kumazawa, Kyosuke Miyata, Takahiro Fukuoka, Seiichi Kato
  • Patent number: 9627710
    Abstract: A battery includes: an electricity-generating element that is formed by winding an electrode plate and a separator and has a space at a winding axial portion; and a spacer having an inclined portion having a width that is gradually reduced toward the center of the electricity-generating element. At least a part of the spacer is disposed in the space at the winding axial portion of the electricity-generating element, the inclined portion of the spacer abutting against an end of an inner wall of the electricity-generating element.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: April 18, 2017
    Assignee: GS Yuasa International Ltd.
    Inventor: Hiroshi Kawamura
  • Patent number: 9627658
    Abstract: According to one embodiment, a battery includes a container, an electrode group, an electrolytic solution, a sealing plate, a terminal, an injecting port, a sealing plug, a lead and a pressing member. The injecting port is opened in the sealing plate. The sealing plug closes the injecting port of the sealing plate, and is made of an elastic material. The lead electrically connects a positive electrode or a negative electrode of the electrode group to the terminal. The pressing member is integrated with the lead. The pressing member presses the sealing plug to the sealing plate.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: April 18, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yoshio Takenouchi, Kenichi Takahashi, Mitsugi Ogura
  • Patent number: 9627711
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The positive electrode of this secondary battery contains a positive electrode active substance having a hollow structure, which has a shell portion and a hollow portion formed inside the shell portion. In addition, a heat-resistant barrier layer is disposed between the positive electrode and the separator.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: April 18, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki Nagai, Takumi Tamaki
  • Patent number: 9614247
    Abstract: A button cell has a winding arranged in the cup-shaped, positive-polarity housing half such that one of the flat end sides points in the direction of the cup base, the circumferential outer side thereof bears against the circumferential cup wall and the outer side together with the cup wall forms a clamping zone in which the first current output conductor is clamped.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: April 4, 2017
    Assignee: Varta Microbattery GmbH
    Inventors: David Ensling, Edward Pytlik, Jürgen Ernsperger, Winfried Gaugler, Berthold Häussler, Claus-Christian Fischer
  • Patent number: 9608247
    Abstract: An energy storage device including a spiral electrode group in which a first electrode plate and a second electrode plate having polarity reverse to that of the first electrode plate are spirally wound with a separator interposed therebetween, wherein the second electrode plate is opposed to an inner circumference and an outer circumference of the first electrode plate, portions of the separator are reinforced, the reinforced portions of the separator include a first reinforced portion formed between a winding-start end of the first electrode plate and the second electrode plate located on a radially outer side of the winding-start end, and a second reinforced portion formed between the winding-start end of the first electrode plate and the second electrode plate located on a radially inner side of the winding-start end, and the first reinforced portion and the second reinforced portion are arranged apart from each other.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: March 28, 2017
    Assignee: GS Yuasa International Ltd.
    Inventors: Tadashi Kakeya, Manabu Kanemoto, Mitsuhiro Kodama, Toshiyuki Nukuda
  • Patent number: 9608456
    Abstract: A method for determining the self-discharge current of a lithium-ion battery provided with a positive electrode, a negative electrode, and an electrolyte arranged between the positive and negative electrodes includes charging the battery until a metal lithium layer is formed between the electrolyte and the negative electrode, measuring the open-circuit voltage of the battery at two moments, and determining the self-discharge current from the variation of the voltage measured between the two moments.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: March 28, 2017
    Assignee: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Nelly Martin, Frederic Le Cras
  • Patent number: 9608295
    Abstract: A lithium-ion secondary battery (10) includes a wound electrode assembly (40) having a positive electrode current collector foil (51) and a negative electrode current collector foil 61). An edge portion (52) of the positive electrode current collector foil (51) is exposed in a spiral form at one end of a winding axis (WL). An edge portion (62) of the negative electrode current collector foil (61) is exposed in a spiral form at the other end of the winding axis (WL). The spirally exposed edge portion (52) of the positive electrode current collector foil (51) is divided and gathered into a plurality of parts divided at at least one of a plurality of gaps (S), excluding a central portion (WC) containing the winding axis (WL), provided between wound layers of the positive electrode current collector foil (51) stacked in a direction orthogonal to the winding axis (WL).
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: March 28, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yukiyoshi Ueno, Hideki Sano, Kaoru Inoue, Hideaki Fujita
  • Patent number: 9590219
    Abstract: An electrode assembly and a secondary battery including the same, the electrode assembly including a first electrode plate, the first electrode plate including a first electrode collector on which a first active material is coated, and a first electrode tab protruding in parallel with a lengthwise direction of the first electrode collector; a second electrode plate, the second electrode plate including a second electrode collector on which a second active material is coated, and a second electrode tab protruding in parallel with a lengthwise direction of the second electrode collector; a first separator between the first and second electrode plates; and a second separator at an outside of the second electrode plate, wherein the first and second electrode tabs protrude in directions opposite to each other perpendicular to a winding axis.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: March 7, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventor: Su-Hyung Park
  • Patent number: 9577239
    Abstract: A secondary battery including an electrode assembly. The electrode assembly includes a first electrode including a plurality of first electrode tabs extending to a side of the first electrode, a second electrode including a plurality of second electrode tabs extending to a side of the second electrode, and a separator between the first electrode and the second electrode and insulating the first electrode and the second electrode from one another. The electrode assembly is in a wound jelly roll shape. The plurality of first electrode tabs are in one of four quadrants formed by a long axis and a short axis of the wound electrode assembly. The plurality of second electrode tabs are in a different one of the four quadrants.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: February 21, 2017
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Changbum Ahn, Youngbae Sohn, Jeongsoon Shin
  • Patent number: 9520589
    Abstract: Disclosed is a secondary battery of an improved lead structure including an electrode assembly including a cathode plate having a cathode tab, an anode plate having an anode tab, and a separator stacked in an alternate manner, a battery casing to receive the electrode assembly, a cathode lead electrically connected to the cathode tab, and an anode lead electrically connected to the anode tab, wherein at least one electrode tab of the cathode tab and the anode tab is electrically connected to the corresponding electrode lead at a plurality of joints and the number of the electrode leads is smaller than the number of the joints between the electrode tab and the electrode lead.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: December 13, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Ji-Hyun Kim, Bo-Hyun Kim
  • Patent number: 9508973
    Abstract: An electrode assembly for a secondary battery comprising an adiabatic layer attached to the negative electrode layer is disclosed. The electrode assembly comprises a positive electrode layer having a positive electrode collector, a positive electrode coating, and a non-coated area on the positive electrode collector. The negative electrode layer has a negative electrode collector, a negative electrode coating, and a non-coated area on the negative electrode collector. A separator insulates the positive and negative electrode layers. Positive and negative electrode tabs are attached to the non-coated areas of the positive and negative electrode collectors. The negative electrode layer has an adiabatic layer attached to the surface of a non-coated area of the negative electrode collector that is opposite the surface to which the negative electrode tab is attached.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: November 29, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Cheon Soo Kim
  • Patent number: 9496581
    Abstract: A button cell includes a housing cup and a housing top separated from one another by an insulating seal and which form a housing with a flat bottom and a flat top parallel to it, and an electrode-separator assembly within the housing including flat layer positive and negative electrodes and connected to one another by a flat separator, wherein the layers are aligned essentially at right angles to the flat bottom and the flat top and the electrode-separator assembly is a spiral winding having end faces defining side surfaces of the spiral winding facing in an axial direction relative to the flat bottom and the flat top, and one of the electrodes connects to the flat bottom or the flat top via an output conductor including a thin film resting flat between an end face of the spiral winding and the flat top or the flat bottom.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: November 15, 2016
    Assignee: Varta Microbattery GmbH
    Inventors: Eduard Pytlik, Jürgen Lindner, Ulrich Barenthin, Winfried Gaugler
  • Patent number: 9490503
    Abstract: Electrolyte solutions including combinations of high dielectric and low viscosity solvents. These solvent combinations provide low temperature performance and high temperature stability in lithium ion battery cells.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: November 8, 2016
    Assignees: WILDCAT DISCOVERY TECHNOLOGIES, INC., JOHNSON CONTROLS TECHNOLOGY COMPANY
    Inventors: Gang Cheng, Ye Zhu, Deidre Strand, Boutros Hallac, Bernhard M. Metz
  • Patent number: 9490458
    Abstract: A battery is provided, comprising: a battery housing having at least one opening end; a battery cover sealing the at least one opening end; an electric core received in the battery housing, which comprises at least one heat-conducting tube having at least an end penetrating through the battery cover; and an electrolyte filled in a space formed by the battery housing with the battery cover.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: November 8, 2016
    Assignee: BYD Company Limited
    Inventors: Jianguo Liu, Zhiwei Tong
  • Patent number: 9450240
    Abstract: A secondary battery including: an anode including a positive electrode active material; a cathode including a negative electrode active material; a separator interposed between the anode and the cathode; and a non-aqueous electrolyte. The positive electrode active material includes a lithium nickel oxide, and the negative electrode active material includes at least one silicon compound selected from the group consisting of silicon, a silicon oxide, and a silicon alloy.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: September 20, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Wan Mook Lim
  • Patent number: 9444089
    Abstract: Disclosed herein is a mandrel configured to be used in a winding process for manufacturing a jelly roll type electrode assembly using a long sheet type stack of a cathode/separator/anode structure, wherein the mandrel is oval in a section perpendicular to a rotational central axis of the mandrel and is divided into a first mandrel part located at one side of a central region of the mandrel, in which an end of the sheet type stack is fixedly fitted, and a second mandrel part located at the other side of the central region of the mandrel, and the first mandrel part and the second mandrel part each include a main body part having a region in which the sheet type stack is fitted in an engaged state and an exchange part, detachably mounted to the main body part, having an end of a major axis of the mandrel.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: September 13, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Jae Cheol Jeong, Hak Kyun Kim, Dong-Myung Kim, Sunhwan Kim, Chang Sin Yeo
  • Patent number: 9425449
    Abstract: An outer packaging material for a battery includes a heat resistant stretched resin film layer as an outer layer integrally laminated on one of surfaces of an aluminum foil layer via a first adhesive layer. A thermoplastic unstretched resin film layer as an inner layer is integrally laminated on the other surface of the aluminum foil layer via a second adhesive layer. An adhesive strength between the inner layer and the aluminum foil layer is 4N/15 mm-width to 30N/15 mm-width, and an adhesive strength between the outer layer and the aluminum foil layer is 2N/15 mm-width to 14N/15 mm-width. As a thermoplastic unstretched resin film constituting the inner layer, a thermoplastic unstretched resin film having a sealing strength of two sheets of the thermoplastic unstretched resin films arranged one on the other and heat sealed exceeding 30N/15 mm-width but not exceeding 110N/15 mm-width is used.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: August 23, 2016
    Assignee: Showa Denko Packaging Co., Ltd.
    Inventor: Kenji Yoshino
  • Patent number: 9413029
    Abstract: A secondary battery including a first electrode assembly including first and second electrode plates stacked on each other; and a second electrode assembly including third and fourth electrode plates, wherein the second electrode assembly is wound along an outer circumference of the first electrode assembly. The secondary battery having a high energy density and capable of preventing damage of the electrode plates may be provided.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: August 9, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Jong-Ki Lee
  • Patent number: 9406939
    Abstract: The present disclosure provides a cable-type secondary battery, comprising: an inner electrode; a separation layer surrounding the outer surface of the inner electrode to prevent a short circuit between electrodes; and a sheet-form outer electrode spirally wound to surround the separation layer or the inner electrode.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: August 2, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Yo-Han Kwon, Hye-Ran Jung, Eun-Kyung Kim, Je-Young Kim, Hyo-Mi Kim
  • Patent number: 9362588
    Abstract: An object of this present invention is to provide: a lithium-ion secondary battery 1 constructed to easily interpose an electrical insulating protection film 41 between a battery container 2 and an electricity-generating element 3, to facilitate automatic mounting of the insulating protection film 41, and thus to be highly producible; and a method of manufacturing the battery. The lithium-ion secondary battery 1 of the invention is characterized in that the battery is electrically insulated between the battery container 2 and the electricity-generating element 3, and in that the insulating protection film 41 of a sheet-like form is wrapped around the electricity-generating element 3.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: June 7, 2016
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Toshiyuki Ariga, Satoshi Watanabe, Yoshikazu Noiri
  • Patent number: 9356294
    Abstract: A secondary battery and a manufacturing method thereof are disclosed. In one embodiment, the battery includes an electrode assembly and a case accommodating the electrode assembly. The electrode assembly may include i) a first electrode plate comprising a first collector and a first active material layer formed on at least one side of the first collector, ii) a second electrode plate comprising a second collector and a second active material layer formed on at least one side of the second collector and iii) a separator interposed between the first and second electrode plates. In one embodiment, a plurality of pores are formed only in part of the first and second collectors.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: May 31, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventor: In-Seop Byun
  • Patent number: 9356310
    Abstract: A method for forming a microbattery including, on a surface of a first substrate, one active battery element and two contact pads, this method including the steps of: a) forming, on a surface of a second substrate, two contact pads with a spacing compatible with the spacing of the pads of the first substrate; and b) arranging the first substrate on the second substrate so that the surfaces face each other and that the pads of the first substrate at least partially superpose to those of the second substrate, where a portion of the pads of the second substrate is not covered by the first substrate.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: May 31, 2016
    Assignee: STMICROELECTRONICS (TOURS) SAS
    Inventor: Vincent Jarry
  • Patent number: 9325009
    Abstract: A cathodic active material for a nonaqueous electrolyte secondary battery according to the invention includes a lithium-containing transition metal phosphate containing Li and a transition metal. A transition metal site and P site of the lithium-containing transition metal phosphate are replaced by elements other than elements contained in the lithium-containing transition metal phosphate, and the quantity of P site is excessive with respect to a stoichiometric proportion of the lithium-containing transition metal phosphate. With this cathodic active material, a high-power and high-capacity secondary battery which is superior in safety and cost and has superior rate performance can be provided.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: April 26, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuichi Kamimura, Motoaki Nishijima, Tomohisa Yoshie, Koji Ohira