Having Edge Bond Or Seal Patents (Class 429/139)
  • Patent number: 10938009
    Abstract: A first separator (130) covers a first surface of a cathode electrode (110). The first separator (130) has a melting point of a first temperature. A second separator (140) covers a second surface of the cathode electrode (110). The second separator (140) has a melting point of a second temperature higher than the first temperature. An adhesive layer (132) is formed by melting a portion of the first separator (130). The adhesive layer (132) pastes the first separator (130) and the second separator (140) to each other.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: March 2, 2021
    Assignee: Envision AESC Energy Devices Ltd.
    Inventor: Akihiro Modeki
  • Patent number: 10811665
    Abstract: The present invention relates to an electrode assembly including at least two electrode plates and a separator interposed between the electrode plates, wherein indented portions are formed from lower ends of opposite sides of the electrode tab in an opposite direction to an externally extending direction of the electrode tab in a side of the electrode body in which the electrode tab externally extends, in the electrode plates.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: October 20, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sei Woon Oh, Hyun Min Kim, Eun Ju Lee, Sun Hwak Woo
  • Patent number: 10700328
    Abstract: The present invention provides a unit cell for a nickel-zinc battery in the form of a cell pack having positive and negative electrodes reliably separated by a hydroxide ion-conductive separator, which can be readily handled and is very advantageous for forming an assembled battery. The nickel-zinc cell pack of the invention includes: a flexible bag comprising flexible films; a separation sheet liquid-tightly connected to the interior of the flexible bag to separate a positive-electrode chamber and a negative-electrode chamber for inhibiting liquid communication therebetween; a positive electrode and a positive-electrode electrolytic solution disposed in the positive-electrode chamber; a negative electrode and a negative-electrode electrolytic solution disposed in the negative-electrode chamber, wherein the separation sheet comprises a separator structure comprising a separator exhibiting hydroxide-ion conductivity and water impermeability.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: June 30, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Yuichi Gonda, Kenshin Kitoh
  • Patent number: 10665395
    Abstract: An electrode laminate is located in a case. The electrode laminate has opposed first and second principal surfaces and opposed first and second lateral side surfaces. The electrode laminate includes a positive electrode having a planar main surface and first and second opposed lateral ends located on opposite lateral sides of its main surface, a negative electrode having a planar main surface and first and second opposed lateral ends located on opposite lateral sides of its main surface, the main surface of the positive electrode opposing the main surface of the negative electrode. A separator is located between the opposed main surfaces of the positive and negative electrodes and has first and second lateral ends extending laterally outward from the first and second lateral ends of the positive and negative electrodes, respectively. At least a tip of the first and second lateral ends of the separator are bent in a direction towards the first principal surface of the electrode laminate.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: May 26, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Masashi Higuchi
  • Patent number: 10651446
    Abstract: A battery includes at least an electrode group including a positive electrode, a separator, a negative electrode, and a protection layer. The separator is interposed between the positive electrode and the negative electrode. The positive electrode includes a positive electrode current collector, a positive electrode mixture layer, and a positive electrode tab. The positive electrode mixture layer is disposed on a surface of the positive electrode current collector. The positive electrode tab is electrically connected to the positive electrode current collector. The protection layer covers a surface of the positive electrode tab. A volume resistivity of the protection layer is within a range of one to 100 times a volume resistivity of the positive electrode mixture layer.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: May 12, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukinari Tanabe, Keiji Kaita, Nobuyuki Yamazaki, Masaru Takagi, Teruo Ishishita
  • Patent number: 10601066
    Abstract: In the case where a film, which has lower strength than a metal can, is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery that is durable even when force is externally applied thereto is provided. A cushioning material is provided in a region surrounded by an exterior body of a secondary battery. Specifically, a cushioning material is provided on the periphery of a current collector such that a sealing portion of an exterior body (film) is located outside the cushioning material.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: March 24, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Minoru Takahashi, Ryota Tajima, Takuya Miwa, Yuugo Goto
  • Patent number: 10490795
    Abstract: A rechargeable battery includes positive and negative electrodes and first and second separator portions. The positive electrode includes a positive metal foil and a positive active material layer. A positive active material-free portion is formed on a first end of the positive electrode. The positive active material layer extends to a second end. The negative electrode includes a negative metal foil and a negative active material layer. A negative active material-free portion is formed on a third end of the negative electrode. The negative active material layer extends to a fourth end. Each of the first and second separator portions includes a strong bonding portion and a weak bonding portion. The strong bonding portion is located proximate to the first end and extends along the first end. The weak bonding portion is located proximate to the second end and extends along the second end.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: November 26, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Atsushi Minagata
  • Patent number: 10411239
    Abstract: The present disclosure provides a method of casting ribs on substrate, said method comprising acts of, mounting applicator comprising plurality of nozzles and polymer filled into the applicator, placing the substrate below the nozzles of the applicator, applying pressure onto the melt polymer to cast plurality of polymer ribs of predetermined shape on the substrate, and cooling the substrate casted with ribs.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: September 10, 2019
    Assignee: H&V Advanced Materials (India) Private Limited
    Inventor: Gubbi Krishnappa Natesh
  • Patent number: 10218030
    Abstract: According to one embodiment, an electrode structure is provided. The electrode structure includes a current collector, a separator layer, and an active material layer including a main surface and a first end face other than the main surface. The active material layer covers a first part of at least one surface of the current collector. The separator layer covers the main surface of the active material layer, at least a part of the first end face and second part of the at least one surface of the current collector.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: February 26, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takuya Iwasaki, Tomoko Sugizaki, Yasuhiro Harada, Norio Takami
  • Patent number: 10186701
    Abstract: A battery separator for a lead acid (storage) battery is made from a thermoplastic sheet material. The sheet material has a central region flanked by peripheral regions. The central region includes a plurality of longitudinally extending ribs that are integrally formed from the sheet material. The peripheral regions are free of ribs and may include a densified structure. Also disclosed are a method of producing the foregoing separator, an envelope separator made from the sheet material, and a method of making the envelope separator.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: January 22, 2019
    Assignee: Daramic, LLC
    Inventors: J. Kevin Whear, Eric H. Miller, Salvatore Cardillo, Daniel Dreyer
  • Patent number: 10135052
    Abstract: A stacked battery including two kinds of electrodes 1, 2 and separators 3 through each of which one of the two kinds of electrodes 1 is stacked on another of the two kinds of electrodes 2, each of separators 3 including bonding portion 7 in which separator 3 stacked on the one of the two kinds of electrodes 1 and separator 3 stacked on the another of the two kinds of electrodes 2 are partly bonded to each other on a lateral side of the one of the two kinds of electrodes 1, and non-bonding portion 8 in a curve form which extends at least from a position in which separator 3 is contacted with an end surface of the another of the two kinds of electrodes 2 toward a lateral side of the another of the two kinds of electrodes 2.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: November 20, 2018
    Assignee: AUTOMOTIVE ENERGY SUPPLE CORPORATION
    Inventor: Shinichiro Sakaguchi
  • Patent number: 10124296
    Abstract: Disclosed herein are ceramic selective membranes and methods of forming the ceramic selective membranes by forming a selective silica ceramic on a porous membrane substrate. Representative ceramic selective membranes include ion-conductive membranes (e.g., proton-conducting membranes) and gas selective membranes. Representative uses for the membranes include incorporation into fuel cells and redox flow batteries (RFB) as ion-conducting membranes.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: November 13, 2018
    Assignee: University of Washington
    Inventors: Lilo D. Pozzo, Anthony William Moretti, Gregory M. Newbloom, Aaron West, Eden Rivers
  • Patent number: 10026946
    Abstract: This electricity storage device comprises an electrode assembly, a case, an electrode terminal and a conductive member. The electrode assembly comprises a positive electrode, a negative electrode and a separator. The separator comprises a first separator part and a second separator part. The separator has a container part that contains portions of the positive electrode other than a tab. The separator has a welded part and a tab facing part. The welded part has facing parts that are positioned on both sides of the tab facing part. The facing parts face the electrode terminal with the conductive member being interposed therebetween. The facing parts are larger in shrinkage amount associated with thermal welding than the other portions of the welded part.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: July 17, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Motoaki Okuda, Atsushi Minagata, Yohei Hamaguchi
  • Patent number: 9871232
    Abstract: A cell in which thermal welding of a laminate packaging is performed so that the thickness of a thermal welded portion including an electrode terminal is larger than that of a thermal welded portion including no electrode terminal.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: January 16, 2018
    Assignee: Sony Corporation
    Inventors: Kazuhito Hatta, Mashio Shibuya
  • Patent number: 9673480
    Abstract: Binder for an electrode of an electrochemical system having a non-aqueous electrolyte, said binder comprising a first polymer which has functional groups capable of reacting with a crosslinking agent and is crosslinked with said crosslinking agent, the crosslinked first polymer forming a three-dimensional network in which a second polymer chosen from fluoropolymers is imprisoned.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: June 6, 2017
    Assignees: INSTITUT NATIONAL POLYTECHNIQUE DE GRENOBLE, COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Franck Medlege, Helene Rouault, Naceur Belgacem, Anne Blayo
  • Patent number: 9450217
    Abstract: A pouch battery including an electrode assembly, and a pouch case comprising a receiving part accommodating the electrode assembly, wherein corners or vertices of the receiving part are coated with a UV curing agent.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: September 20, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Suhee Han
  • Patent number: 9404771
    Abstract: An optical sensor (10) comprises an optical cavity defined by a dielectric body and responsive to one or more physical environmental conditions, and a waveguide (70) having a terminal end spaced apart from the optical cavity such that light is optically coupled from the terminal end of the waveguide (70) to the optical cavity. The waveguide (70) is arranged such that, in use, it is maintained at a first temperature that would not damage the optical coupling to the optical cavity when the dielectric body is maintained at a second temperature sufficient to damage the optical coupling to the optical cavity.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: August 2, 2016
    Assignee: Oxsensis Ltd.
    Inventors: Arnold Peter Roscoe Harpin, John Paul Drake, Stephen Geoffrey Tyler
  • Publication number: 20150147626
    Abstract: To provide a power storage unit having a structure which is unlikely to break down by change in shape, such as bending. An electrode plate is covered with a sheet of an insulator which is folded in two. The sheet is preferably processed into a bag-like shape or an envelope-like shape by bonding overlapping portions of the sheet in the periphery of the electrode plate. The electrode plate and the sheet are fixed to an exterior body. In the case where the shape of the exterior body is changed by bending or the like, the electrode plate and the sheet can slide together in the exterior body. Thus, stress on the electrode plate due to bending can be relieved.
    Type: Application
    Filed: November 27, 2014
    Publication date: May 28, 2015
    Inventors: Ryota TAJIMA, Yuugo Goto, Yumiko Yoneda, Junya Goto, Takuya Miwa
  • Publication number: 20150140401
    Abstract: A rechargeable battery includes positive and negative electrodes and first and second separator portions. The positive electrode includes a positive metal foil and a positive active material layer. A positive active material-free portion is formed on a first end of the positive electrode. The positive active material layer extends to a second end. The negative electrode includes a negative metal foil and a negative active material layer. A negative active material-free portion is formed on a third end of the negative electrode. The negative active material layer extends to a fourth end. Each of the first and second separator portions includes a strong bonding portion and a weak bonding portion. The strong bonding portion is located proximate to the first end and extends along the first end. The weak bonding portion is located proximate to the second end and extends along the second end.
    Type: Application
    Filed: May 30, 2013
    Publication date: May 21, 2015
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Atsushi Minagata
  • Patent number: 9017852
    Abstract: A secondary battery includes an electrode assembly including a pair of electrodes separated from each other by a separator, a battery case including a front portion bonded to a back portion to produce wing portions at opposite edges of the battery case, the electrode assembly being arranged within an accommodating portion of the battery case, the accommodating portion being arranged between the wing portions, an insulating member arranged at each of said wing portions of the battery case and a bonding portion arranged at each of said wing portions to attach said wing portions to the accommodating portion of the battery case. The bonding portion may be a double sided tape and may be integrally provided with the insulating member to simplify manufacturing process thereof.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: April 28, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ki-Sik Pak, Ki-Sung Hong
  • Publication number: 20150017509
    Abstract: Provided is a separator incorporating an electrode, provided with two of separator sheets facing each other, an electrode sandwiched between the separator plates. Each of the facing surfaces of the separator sheets is provided with a coated portion coated with a ceramic, and a non-coated portion that is not coated with the ceramic, located in at least a portion of ranges corresponding to peripheral edges of the electrode. The separator sheets are joined to one another in the non-coated portion.
    Type: Application
    Filed: January 31, 2013
    Publication date: January 15, 2015
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Motoaki Okuda, Takayuki Kato
  • Publication number: 20140349167
    Abstract: In a method for manufacturing a packed electrode, an electrode is set between two separation layers that are made of resin, a heat-resistant layer is set between at least one of the two separation layers and the electrode, the two separation layers, the electrode and the heat-resistant layer, an overlapped portion of the two separation layers overlapped with the heat-resistant layer interposed therebetween is pinched, pressed and heated by a pair of heat sealing chips at an outside of the electrode, and the two separation layers are fastened by destroying the heat-resistant layer at the overlapped portion that are pressed and heated. According to the above manufacturing method, man-hours required for stacking can be reduced by integrating the heat-resistant layer with the packed electrode.
    Type: Application
    Filed: January 8, 2013
    Publication date: November 27, 2014
    Inventors: Kouhei Wakai, Kazumi Hisajima, Taewon Kim, Miyuki Nakai, Yasuhiro Sawada
  • Patent number: 8852785
    Abstract: A bipolar secondary battery has a battery element that includes first and second bipolar electrodes each having a collector disposed with a conductive resin layer containing a first resin as a base material and positive and negative electrode active material layers formed on opposite sides of the collector and a separator containing a second resin as a base material, arranged between the first and second bipolar electrodes and retaining an electrolyte material to form an electrolyte layer. The positive electrode active material layer of the first bipolar electrode, the electrolyte layer and the negative electrode active material layer of the second bipolar electrode constitute a unit cell. A melting point of the first resin is lower than or equal to a melting point of the second resin. Outer peripheries of the collectors of the first and second bipolar electrodes and an outer periphery of the separator are fused together to thereby seal an outer peripheral portion of the unit cell.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: October 7, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kenji Hosaka, Motoharu Obika
  • Patent number: 8828595
    Abstract: Disclosed is a sealing material composition for a secondary battery, which is capable of providing a safe sealing layer that exhibits excellent adhesion in the sealing portion, while preventing leakage of the electrolyte solution. Specifically disclosed is a sealing material composition for a secondary battery, which is characterized by containing a diene rubber, a thermoplastic elastomer, carbon and an organic liquid material. The sealing material composition for a secondary battery is also characterized in that the number of coarse particles contained in 3 mL of the composition is 10 or less, said coarse particles having a maximum diameter of 10 ?m or more.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: September 9, 2014
    Assignee: Zeon Corporation
    Inventors: Koichiro Maeda, Naoki Yoshida
  • Patent number: 8808889
    Abstract: The sealed battery has a battery container (4, 5) and a power generating element sealed inside the battery container. The battery container is provided with a fill opening (12), an annular ridge (16), which extends around the entire circumference of the outer face surrounding the fill opening, and an annular indentation (15) on the inside of the inner wall surface of the annular ridge, and has a sealing cap (8), which fits into the annular indentation and covers the fill opening. The sealing cap is joined by being welded to the inner wall surface of the annular ridge around the entire circumference at the edge thereof. Since heat is not well transferred from the inside to the outside of the outer wall surface of the annular ridge, the effective thermal capacity during welding is mostly determined by the structure of the area inside the outer wall surface of the annular ridge. Consequently, the effective thermal capacity is nearly uniform independent of direction.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: August 19, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Satoshi Suzuki, Katsumi Ito
  • Patent number: 8802269
    Abstract: A flat nonaqueous secondary battery with improved reliability is provided. The flat nonaqueous secondary battery (1) includes an electrode assembly disposed in a space formed by an exterior case (2) and a seal case (3). The electrode assembly includes a plurality of positive electrodes (5) and a plurality of negative electrodes (6) alternately stacked upon each other and a separator (7). The separator (7) has a joint (7c) formed by welding together at least a portion of its periphery. When the separator (7) and the positive electrode (5) are measured along a cross section in their thickness direction, the ratio A/B of the shortest distance A between the end of the joint (7c) of the separator (7) facing the positive electrode (5) and the outer periphery of the positive electrode (5) sandwiched by the separator (7) to the thickness B of the positive electrode (5) is not smaller than 1.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: August 12, 2014
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Yuko Onishi, Toshikazu Yoshiba, Megumu Takai
  • Patent number: 8778523
    Abstract: Disclosed herein is an electrochemical cell constructed in a structure in which a plurality of full cells or bicells, as unit cells, are folded by a separation film formed in the shape of a long sheet, and separators of the unit cells are secured to the separation film by thermal welding. The electrochemical cell according to the present invention has the effect of preventing the electrodes of the stacked electrodes from being separated from the separation film or from being twisted due to external impacts and vibrations, thereby restraining the electrochemical cell from generating heat or catching fire. Furthermore, the structural stability of the electrochemical cell is maintained even when the temperature of the electrochemical cell is increased, or the volume of the electrochemical cell is increased due to the generation of gas.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: July 15, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Ji Heon Ryu, Jaepil Lee, Jeong Hee Choi, Min Su Kim, Youngjoon Shin
  • Patent number: 8771866
    Abstract: A method of forming a secondary battery comprises: positioning an electrode assembly between a first pouch sheet and a second pouch sheet; initially sealing outer portions of the first pouch sheet and of the second pouch sheet on at least one side of the first and second pouch sheets; and additionally sealing outer portions of the first pouch sheet and of the second pouch sheet on the at least one side of the first and second pouch sheets.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: July 8, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Jangho Yoon
  • Patent number: 8709639
    Abstract: A rechargeable battery that includes: an electrode assembly generating a current; a case accommodating the electrode assembly therein; and a cap assembly coupled to the case so as to be electrically connected with the electrode assembly. The electrode assembly includes a first electrode, a separator, and a second electrode that are sequentially stacked, and the separator includes a main body part disposed between the first and second electrodes and protrusions formed that protrude from the main body part to the side of at least one of an end portion of the first electrode and an end portion of the second electrode.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: April 29, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jun-Sik Kim, Tae-Keun Kim, Sae-Weon Roh, Sung-Soo Kim
  • Patent number: 8652679
    Abstract: A rechargeable battery according to an exemplary embodiment of the present invention includes: an electrode assembly including a positive electrode, a negative electrode, a separator disposed between the positive and negative electrodes and having an expanded portion protruding to the outside of the positive and negative electrodes; a fixing member including a first support contacting a first outer side of the expanded portion, a second support contacting a second outer side, facing the opposite direction of the first outer side, and a joining portion joining the first and second supports; and a terminal electrically connected with the electrode assembly.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: February 18, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jun-Sik Kim, Sung-Soo Kim
  • Publication number: 20130280582
    Abstract: Four sides of a rectangular bag-like separator 10 are composed of two adjacent separator thermo-bonding sides 10a and 10c where thermo-bonding portions are formed and of two adjacent insertion opening sides 10b and 10d forming one insertion opening 11 into which an electrode 30 can be inserted. A thermo-bonding section is formed in a portion of at least one of the insertion opening sides 10b and 10d.
    Type: Application
    Filed: June 24, 2013
    Publication date: October 24, 2013
    Inventor: Kiyokazu Oikawa
  • Publication number: 20130266841
    Abstract: Disclosed herein is an electrochemical cell constructed in a structure in which a plurality of full cells or bicells, as unit cells, are folded by a separation film formed in the shape of a long sheet, and separators of the unit cells are secured to the separation film by thermal welding. The electrochemical cell according to the present invention has the effect of preventing the electrodes of the stacked electrodes from being separated from the separation film or from being twisted due to external impacts and vibrations, thereby restraining the electrochemical cell from generating heat or catching fire. Furthermore, the structural stability of the electrochemical cell is maintained even when the temperature of the electrochemical cell is increased, or the volume of the electrochemical cell is increased due to the generation of gas.
    Type: Application
    Filed: June 6, 2013
    Publication date: October 10, 2013
    Inventors: Ji Heon Ryu, Jaepil Lee, Jeong Hee Choi, Min Su Kim, Youngjoon Shin
  • Patent number: 8486160
    Abstract: A rechargeable battery comprises: an electrode assembly comprising a plurality of positive electrode plates, a plurality of negative electrode plates, and a plurality of separators; and a case enclosing the electrode assembly; wherein each separator in the plurality of separators comprises a central portion facing at least one of the positive and negative electrode plates, and an extended portion that extends past the positive and negative electrode plates, and wherein each of the extended portion comprises an adhered portion that is adhered to adjacent extended portions.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: July 16, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Po-Jung Hwang, Seung-Jae Lee, Yoo-Myung Kang, Jae-Do Ahn, Jae-Min Yang, Jeong-Heon Lee, Byeong-Yeol Song, Jae-Hyun Hwang, Sung-Soo Kim, Sae-Weon Roh
  • Publication number: 20130164596
    Abstract: A battery separator for a lead acid (storage) battery is made from a thermoplastic sheet material. The sheet material has a central region flanked by peripheral regions. The central region includes a plurality of longitudinally extending ribs that are integrally formed from the sheet material. The peripheral regions are free of ribs and may include a densified structure. Also disclosed are a method of producing the foregoing separator, an envelope separator made from the sheet material, and a method of making the envelope separator.
    Type: Application
    Filed: February 21, 2013
    Publication date: June 27, 2013
    Applicant: DARAMIC LLC
    Inventor: DARAMIC LLC
  • Patent number: 8431265
    Abstract: Provided is a battery which can reduce expansion caused by gas emission when stored at high temperature. A secondary battery (1) is constructed such that a flat wound electrode (20) as a power generating element is sandwiched between exterior members (30a, 30b), having adhesion layers (40a, 40b) interposed therebetween. The adhesion layers (40a, 40b) are, for example, two-sided adhesive tapes and have a structure such that adhesive layers are formed on both surfaces of a thin plate-shaped support layer. The support layer is preferably made of polypropylene or polyimide. The adhesion layers (40a, 40b) are composed of maleated polypropylene whose melting point is preferably in a range from 100° C. to 200° C., more preferably, in a range from 140° C. to 180° C.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: April 30, 2013
    Assignee: Sony Corporation
    Inventors: Takaaki Kimijima, Norio Mamada
  • Patent number: 8415049
    Abstract: The present invention provides a bipolar battery made by using a polymer gel electrolyte or a liquid electrolyte in an electrolyte layer, which is highly reliable and prevents liquid junction (short circuit) caused by leak out of an electrolyte solution from the electrolyte part. The present invention provides a bipolar battery laminated, in series, with a plurality pieces of bipolar electrodes which is formed with a positive electrode on one surface of a collector, and a negative electrode on the other surface, so as to sandwich an electrolyte layer, characterized by being provided with a separator which retains the electrolyte later, and a seal resin which is formed and arranged at the outer circumference part of a part of the separator where the electrolyte is retained.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: April 9, 2013
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Osamu Shimamura, Kenji Hosaka, Kyoichi Watanabe, Takaaki Abe, Takuya Kinoshita, Hideaki Horie, Hajime Sato, Ryouichi Senbokuya
  • Patent number: 8404378
    Abstract: A battery separator for a lead acid (storage) battery is made from a thermoplastic sheet material. The sheet material has a central region flanked by peripheral regions. The central region includes a plurality of longitudinally extending ribs that are integrally formed from the sheet material. The peripheral regions are free of ribs and may include a densified structure. Also disclosed are a method of producing the foregoing separator, an envelope separator made from the sheet material, and a method of making the envelope separator.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: March 26, 2013
    Assignee: Daramic LLC
    Inventors: J. Kevin Whear, Eric H. Miller, Salvatore Cardillo, Daniel Dreyer
  • Patent number: 8394524
    Abstract: A battery unit and a lithium secondary battery employing the same are provided. The battery unit includes a positive electrode plate having a positive current collector and a positive active material layer formed on at least one plane of the positive current collector, a positive electrode lead electrically connected with the positive current collector, a negative electrode plate having a negative current collector and a negative active material layer formed on at least one plane of the negative current collector, a negative electrode lead electrically connected with the negative current collector, and a separator interposed between the positive electrode plate and the negative electrode plate, having a width greater than that of each electrode plate, and having different widths of protruding portions which stick out on either side of the electrode plate.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: March 12, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Joong-Hun Kim, Hyung-Bok Lee
  • Publication number: 20130040182
    Abstract: A stacked secondary cell suppresses heat contraction of the opening of a sack-shaped separator even in a high-temperature environment and prevents the occurrence of short circuits between the stacked electrodes. In the disclosed stacked secondary cell, positive electrodes (13) and negative electrodes each having a lead-out terminal (2) are alternately stacked with interposed separators (15). Of positive electrodes (13) and negative electrodes, at least electrodes of one polarity are each housed in sack-shaped separator sacks (15) each formed by two sheet-shaped separators that are bonded together with an opening (3) in one portion. Further, the lead-out terminal (2) of the electrode (13) that is housed in the separator sack (15) protrudes through the opening (3) to the exterior of the separator sack (15), and the outer periphery of the opening (3) is covered by an electric insulating layer (8).
    Type: Application
    Filed: May 10, 2011
    Publication date: February 14, 2013
    Applicant: NEC ENERGY DEVICES, LTD.
    Inventor: Takao Daidoji
  • Patent number: 8338057
    Abstract: A gasket for sealing internal surfaces of a fuel cell and formed of compressible material, the gasket comprising a first sealing surface and a second sealing surface for providing a fluid seal against opposing faces of a first fluid flow field plate and a second fluid flow field plate respectively, the gasket further comprising a third sealing surface for sealing against an outer perimeter region of a first surface of a membrane electrode assembly, the third sealing surface being entirely enclosed within a boundary defined by an inner perimeter of the second sealing surface.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: December 25, 2012
    Assignee: Intelligent Energy Limited
    Inventors: Peter David Hood, Simon Edward Foster
  • Patent number: 8334068
    Abstract: An electrode terminal 42 is connected to a current collector part 12 of electrodes through a deformation restricting member 3. Between laminate films 2 and 2, a space 15 is formed above and below the current collector part 12. The deformation restricting member 3 is placed close to the inner wall peripheral portion of an outer package including sealing parts 23, thereby forming a deformation-restricting part 22 to restrict the inward deformation of the laminated films 2. In a section extending from the inside end of the deformation restricting member 3 to a battery element 1, the laminated films 2 face the space 15 to allow the deformation of the laminated films 2 in response to the change of internal pressure. At the decrease of internal pressure, the contraction of the laminated films 2 can be localized in the deformation-allowing part 21, thereby reducing the bending stress on an end portion of the sealing parts 23.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: December 18, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomoyasu Takeuchi, Yoshiaki Ebine, Makoto Nakashima, Satoshi Suzuki
  • Publication number: 20120276437
    Abstract: A flat nonaqueous secondary battery with improved reliability is provided. The flat nonaqueous secondary battery (1) includes an electrode assembly disposed in a space formed by an exterior case (2) and a seal case (3). The electrode assembly includes a plurality of positive electrodes (5) and a plurality of negative electrodes (6) alternately stacked upon each other and a separator (7). The separator (7) has a joint (7c) formed by welding together at least a portion of its periphery. When the separator (7) and the positive electrode (5) are measured along a cross section in their thickness direction, the ratio A/B of the shortest distance A between the end of the joint (7c) of the separator (7) facing the positive electrode (5) and the outer periphery of the positive electrode (5) sandwiched by the separator (7) to the thickness B of the positive electrode (5) is not smaller than 1.
    Type: Application
    Filed: November 24, 2010
    Publication date: November 1, 2012
    Applicant: HITACHI MAXELL ENERGY, LTD.
    Inventors: Yuko Onishi, Toshikazu Yoshiba, Megumu Takai
  • Patent number: 8257849
    Abstract: A winding electrode body is provided which includes a belt-shaped positive electrode, a belt-shaped negative electrode, and two belt-shaped separators. In the above winding electrode body, the two separators are laminated with the positive electrode and the negative electrode are wound in the state that positive electrode and the negative electrode are interleaved by the intermediate portions of the two separators in the longitudinal directions thereof, start edges of the two separators extending past the intermediate portions are disposed to face each other in a free edge state at a position at which the positive electrode and the negative electrode are not provided, and end edges of the two separators extending past the intermediate positions are disposed and fixed to each other at a position at which the positive electrode and the negative electrode are not provided.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: September 4, 2012
    Assignee: Sony Corporation
    Inventor: Yuji Uchida
  • Publication number: 20120196172
    Abstract: A stack type battery has a positive electrode plate (1) having a positive electrode active material layer (1a) formed on at least one side of a current collector made of a metal plate and a positive electrode current collector lead (11) provided in a portion thereof, the positive electrode plate (1) and the positive electrode current collector lead (11) facing a negative electrode plate across a separator (3a). A protective layer (13) made of a material having a lower electron conductivity than the metal of the current collector and being non-insulative is formed at a portion of the positive electrode plate (1) between the positive electrode current collector lead (11) and the separator (3a). The positive, electrode current collector lead (11) and the separator (3a) are joined to each other by the protective layer (13).
    Type: Application
    Filed: January 30, 2012
    Publication date: August 2, 2012
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Hitoshi Maeda, Yoshitaka Shinyashiki, Kazunori Donoue, Masayuki Fujiwara
  • Publication number: 20120189894
    Abstract: An electrode assembly for a secondary battery that includes pressing parts are formed on separators surrounding positive and negative electrodes so that the electrode assembly can be bent in a zigzag shape to form a stacked structure, and thus the thermal stability of the electrode assembly can be improved and the stacked structure of the electrode assembly can be easily formed. In addition, electrolyte can easily permeate the electrode assembly. The electrode assembly includes separators, positive and negative electrode plates disposed between the separators, and pressing parts formed on the separators between the positive and negative electrode plates. Guide parts are formed at the pressing parts, and the separators are bent at the guide parts.
    Type: Application
    Filed: January 25, 2012
    Publication date: July 26, 2012
    Applicant: SAMSUNG SDI CO., LTD.
    Inventor: Changbum AHN
  • Patent number: 8192858
    Abstract: A method for forming an electrode plate for a battery includes the steps of (a) forming mixture layers on a current collector, lateral end surfaces of the mixture layers forming a continuous plane with at least one lateral end surface of the current collector; and (b) forming a porous film on the mixture layers.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: June 5, 2012
    Assignee: Panasonic Corporation
    Inventors: Hideaki Fujita, Yutaka Wakai
  • Patent number: 8158279
    Abstract: A battery unit and a lithium secondary battery employing the same are provided. The battery unit includes a positive electrode plate having a positive current collector and a positive active material layer formed on at least one plane of the positive current collector, a positive electrode lead electrically connected with the positive current collector, a negative electrode plate having a negative current collector and a negative active material layer formed on at least one plane of the negative current collector, a negative electrode lead electrically connected with the negative current collector, and a separator interposed between the positive electrode plate and the negative electrode plate, having a width greater than that of each electrode plate, and having different widths of protruding portions which stick out on either side of the electrode plate.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: April 17, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Joong-Hun Kim, Hyung-Bok Lee
  • Publication number: 20120077071
    Abstract: A pouch-type secondary battery including: an electrode assembly comprising a positive electrode plate, a negative electrode plate and a separator; a negative electrode tab electrically connected to the negative electrode plate and having a first tab tape; and a positive electrode tab electrically connected to the positive electrode plate and having a second tab tape wherein one or two of end portions which the positive electrode tab crosses are located inside a sealing portion.
    Type: Application
    Filed: December 6, 2011
    Publication date: March 29, 2012
    Applicant: SAMSUNG SDI CO., LTD.
    Inventor: Dong-Woo JUNG
  • Publication number: 20120064385
    Abstract: A secondary battery which can maintain alignment between a first electrode plate and a second electrode plate and can improve the cell stability and life characteristic of the battery, and a manufacturing method thereof. A secondary battery includes an electrode assembly including a first electrode plate; a second electrode plate; a first separator between the first electrode plate and the second electrode plate and including a central portion and an outer portion at a periphery of the central portion; and a second separator at a side of the first electrode plate or the second electrode plate opposite a side facing the first separator, the second separator including a central portion and an outer portion at a periphery of the central portion of the second separator, and the outer portion of the first separator and the outer portion of the second separator contact each other at least at a joining part.
    Type: Application
    Filed: March 18, 2011
    Publication date: March 15, 2012
    Inventor: Yongkyun PARK
  • Publication number: 20120028100
    Abstract: A prismatic secondary battery is a prismatic lithium-ion battery including a stack-type electrode assembly in which square positive and negative electrode plates are stacked with separators interposed therebetween. The positive electrode plates are arranged inside a bag-like separator. The width of the separator protruding from an end portion of each positive electrode plate on a non-joined side of the separator is greater than that of the separator protruding from an end portion of the positive electrode plate on a joined side of the separator. The heat-shrinkage rate of the separator in a direction vertical to the non-joined side is greater than that of the separator in a direction parallel to the non-joined side. Short circuiting between the positive and negative electrode plates due to heat shrinkage or rupture of the separator is prevented even when abnormal heat generation occurs in the battery.
    Type: Application
    Filed: July 27, 2011
    Publication date: February 2, 2012
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Hitoshi Maeda, Masayuki Fujiwara, Yuji Tani, Masao Kusukawa, Yoshitaka Shinyashiki, Atsuhiro Funahashi