Patents by Inventor Osamu Shimamura
Osamu Shimamura 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: 8076021Abstract: 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: GrantFiled: December 9, 2005Date of Patent: December 13, 2011Assignee: Nissan Motor Co., Ltd.Inventors: Osamu Shimamura, Kenji Hosaka, Kyoichi Watanabe, Takaaki Abe, Takuya Kinoshita, Hideaki Horie, Hajime Sato, Ryouichi Senbokuya
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Publication number: 20110206974Abstract: An electrode includes a collector formed with a conductive resin layer and an active material layer formed on the conductive resin layer. The active material layer comprises an active material and a binder polymer, and the conductive resin layer is bonded by thermal fusion bonding to the active material layer.Type: ApplicationFiled: December 11, 2009Publication date: August 25, 2011Applicant: NISSAN MOTOR CO., LTD.Inventors: Shiho Inoue, Hideaki Horie, Kenji Hosaka, Osamu Shimamura, Shigeo Ibuka
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Patent number: 7989106Abstract: The invention relates to a bipolar battery cell having a built-in discharge circuit that can automatically balance the charged conditions. The bipolar battery cell includes a plurality of bipolar electrodes, each including a collector having a positive-electrode layer on one surface and a negative-electrode layer on another surface. The bipolar battery cell further includes a plurality of electrolyte layers that exchange ions between the bipolar electrodes; and a discharge circuit that electrically conducts adjacent bipolar electrodes. The discharge circuit is provided on the same surface of at least one layer of the positive-electrode layers, the negative-electrode layers, or the electrolyte layers. Multiple bipolar battery cells are combined to form an assembled battery for vehicular applications.Type: GrantFiled: November 1, 2005Date of Patent: August 2, 2011Assignee: Nissan Motor Co., Ltd.Inventors: Takuya Kinoshita, Hideaki Horie, Takaaki Abe, Osamu Shimamura
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Publication number: 20110151313Abstract: An electrode and method for preparing the same in which droplets of a first electrode ink composition and droplets of a second electrode ink composition are ejected from an ink jet device onto a base material and the first electrode ink composition contains at least one electrode active material and the second electrode ink composition contains at least one binder material. The resulting electrode is suitable for use in a battery.Type: ApplicationFiled: February 28, 2011Publication date: June 23, 2011Applicant: NISSAN MOTOR CO., LTD.Inventors: Takamitsu Saito, Takuya Kinoshita, Hideaki Horie, Kyouichi Watanabe, Osamu Shimamura
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Patent number: 7923400Abstract: A method for preparing an electrode in which droplets of a first electrode ink composition and droplets of a second electrode ink composition are ejected from an ink jet device onto a base material. The first electrode ink composition contains at least one electrode active material and the second electrode ink composition contains at least one binder material. The two ink compositions are deposited in combination to form one of a positive electrode and a negative electrode layer. The resulting electrode is suitable for use in a battery.Type: GrantFiled: December 13, 2005Date of Patent: April 12, 2011Assignee: Nissan Motor Co., Ltd.Inventors: Takamitsu Saito, Takuya Kinoshita, Hideaki Horie, Kyouichi Watanabe, Osamu Shimamura
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Publication number: 20100263201Abstract: A laminate cell comprises a power generating element formed by sequentially stacking positive electrode plates and negative electrode plates while interposing separators therebetween; a positive tab connected to the positive electrode plates through a plurality of positive leads; a negative tab connected to the negative electrode plates through a plurality of negative leads; and a cell package formed of a metal composite film, the cell package hermetically sealing the power generating element and an electrolyte. According to the laminate cell, the heat capacity of a portion of the positive tab, onto which a plurality of the positive leads are joined, and the heat capacity of a portion of the negative tab, onto which a plurality of the negative leads are joined, are made larger than that of other portions of the positive tab and the negative tab.Type: ApplicationFiled: June 28, 2010Publication date: October 21, 2010Applicant: Nissan Motor Co., Ltd.Inventors: Yasunari HISAMITSU, Takaaki Abe, Takanori Ito, Osamu Shimamura, Takamitsu Saito, Hideaki Horie, Hiroshi Sugawara
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Publication number: 20100239902Abstract: A laminate cell comprises a power generating element formed by sequentially stacking positive electrode plates and negative electrode plates while interposing separators therebetween; a positive tab connected to the positive electrode plates through a plurality of positive leads; a negative tab connected to the negative electrode plates through a plurality of negative leads; and a cell package formed of a metal composite film, the cell package hermetically sealing the power generating element and an electrolyte. According to the laminate cell, the heat capacity of a portion of the positive tab, onto which a plurality of the positive leads are joined, and the heat capacity of a portion of the negative tab, onto which a plurality of the negative leads are joined, are made larger than that of other portions of the positive tab and the negative tab.Type: ApplicationFiled: June 1, 2010Publication date: September 23, 2010Applicant: Nissan Motor Co., Ltd.Inventors: Yasunari Hisamitsu, Takaaki Abe, Takanori Ito, Osamu Shimamura, Takamitsu Saito, Hideaki Horie, Hiroshi Sugawara
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Patent number: 7759005Abstract: The disclosure is directed to a bipolar battery that is constructed to improve battery performance by reducing distortions within electrode material of the bipolar battery. The bipolar battery includes multiple battery elements that each includes multiple unit batteries. Each unit battery contains a conductor having a positive electrode layer and a negative electrode layer. A collector is positioned between adjacent positive and negative electrode layers of adjacent unit batteries, and an accumulated thickness absorption member is used to separate collectors of adjacent battery elements. The bipolar battery may be used in a motor vehicle, such as an electric car.Type: GrantFiled: July 10, 2006Date of Patent: July 20, 2010Assignee: Nissan Motor Co., Ltd.Inventors: Kenji Hosaka, Ryouichi Senbokuya, Osamu Shimamura, Naoto Kiriu, Hideaki Horie
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Patent number: 7678497Abstract: A battery including: a solid electrolyte film; and a plurality of unit cells formed thereon and connected in parallel. Each of the unit cells consists of: a positive electrode provided on one side of the solid electrolyte film; a negative electrode provided on the other side of the solid electrolyte film at a position opposite to the positive electrode; and a part of the solid electrolyte film sandwiched between the positive electrode and the negative electrode.Type: GrantFiled: December 16, 2004Date of Patent: March 16, 2010Assignee: Nissan Motor Co., Ltd.Inventors: Hideaki Horie, Takamitsu Saito, Osamu Shimamura
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Patent number: 7659030Abstract: A cell structure that can improve heat dissipation and the vibration-proofing nature of a cell without using a cooling medium while keeping the rigidity and the discharge current quantity of the cell includes at least one electrode having a positive pole active material layer, a current collector and a negative pole active material layer. The cell structure also includes a separator provided between each electrode; and a casing. The cell structure satisfies the inequality: S c × 1000 > b × 1000 S wherein b (mm) indicates a short-side length of the electrode, S (m2) indicates an electrode area, c (mm) indicates a cell structure thickness and 1000 (m2/mm) is a constant. The separators have a different Shore A hardness and the separator having the lowest Shore A hardness is placed at a center of the cell structure.Type: GrantFiled: November 22, 2005Date of Patent: February 9, 2010Assignee: Nissan Motor •Co., Ltd.Inventors: Kyouichi Watanabe, Takaaki Abe, Osamu Shimamura, Takamitsu Saito, Hajime Sato, Kenji Hosaka, Hideaki Horie
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Publication number: 20090233164Abstract: 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: ApplicationFiled: December 9, 2005Publication date: September 17, 2009Inventors: Osamu Shimamura, Kenji Hosaka, Kyoichi Watanabe, Takaaki Abe, Takuya Kinoshita, Hideaki Horie, Hajime Sato, Ryouichi Senbokuya
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Publication number: 20090173632Abstract: In a nonaqueous electrolyte cell-oriented electrode (10), an electrode active material layer (12) formed on a collector (1) has a density gradient developed with a gradient of a varied concentration of a solid along a thickness from a surface of the electrode active material layer (12) toward the collector (1), and in a gel electrolyte cell-oriented electrode (30), an electrode active material layer (32) formed on a collector (1) has a density gradient developed with (a) gradient(s) of (a) varied concentration(s) of one or both of an electrolyte salt and a film forming material along a thickness from a surface of the electrode active material layer (32) toward the collector (1).Type: ApplicationFiled: March 9, 2009Publication date: July 9, 2009Inventors: Mori Nagayama, Takamistu Saito, Osamu Shimamura
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Publication number: 20090136844Abstract: A bipolar battery includes: a bipolar electrode composed, by forming a positive electrode active material layer 12 an one surface of a current collector and forming a negative electrode active material layer 13 on the other surface; and a separator 14 composed to be stacked alternately with the bipolar electrode, wherein, in a single cell layer 15 composed by occluding the positive electrode active material layer 12, the separator 14 and the negative electrode active material layer 13, which are adjacent to one another, a thickness of the separator 14 is 0.68 times or more to less than 1.0 times a thickness of the positive electrode active material layer 12, and is 0.68 times or more to less than 1.0 times a thickness of the negative electrode active material layer 13.Type: ApplicationFiled: November 9, 2006Publication date: May 28, 2009Inventors: Kyoichi Watanabe, Takaaki Abe, Takamitsu Saito, Osamu Shimamura, Kenji Hosaka, Hajime Sato, Hideaki Horie
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Publication number: 20090117456Abstract: Embodiments of a battery taught herein are directed to preventing a displacement between bipolar battery stacks or between a bipolar battery stack and an electrode tab. A bonding portion is formed at a part of a contact surface where a collector positioned at both ends in a stacking direction of a bipolar battery stack is bonded to the electrode tabs. The electrode tab and the collector are fixed by such a bonding portion. Further, the bonding portion is formed at a part of a contact surface where adjacent bipolar battery stacks are bonded to each other. Bipolar batteries positioned at upper and lower portions in the stacking direction are fixed by such a bonding portion.Type: ApplicationFiled: October 31, 2008Publication date: May 7, 2009Applicant: NISSAN MOTOR CO., LTD.Inventors: Kenji Hosaka, Hideaki Horie, Yamamura Yuichiro, Yasuhiro Yanagihara, Osamu Shimamura, Yoshio Shimoida
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Publication number: 20090107746Abstract: In a vehicle drive system including a motor and a secondary battery, the motor and secondary battery are integrated to provide a drive system having good mountability. In a gap between a cylindrical outer housing (116) and a rotor (112), a layered cylindrical secondary battery is provided within the outer housing. A cylindrical cooling member (180) is further arranged between the rotor and secondary battery.Type: ApplicationFiled: November 1, 2006Publication date: April 30, 2009Inventors: Hideaki Horie, Osamu Shimamura, Takamitsu Saito, Takaaki Abe
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Patent number: 7508689Abstract: A inverter has a switching device for switching DC to change it to AC, and a bipolar type rechargeable battery connected to the switching device in parallel or in series for smoothing the current from the switching device.Type: GrantFiled: May 20, 2005Date of Patent: March 24, 2009Assignee: Nissan Motor Co., Ltd.Inventors: Hideaki Horie, Takaaki Abe, Takamitsu Saito, Osamu Shimamura
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Patent number: 7504178Abstract: To provide a battery module and a combination battery, whereby the handling of unit cells is facilitated to thereby enhance the production efficiency while contributing to a downsized power source, the battery module (60) includes laminate-sheathed cells (11) as unit cells, and a retention member (50) for retaining the laminate-sheathed cells, and the retention member is configured with a printed-wiring board (51) printed with voltage measurement wirings (52) for measuring voltages of the laminate-sheathed cells, respectively.Type: GrantFiled: October 12, 2004Date of Patent: March 17, 2009Assignee: Nissan Motor Co., Ltd.Inventors: Osamu Shimamura, Hideaki Horie, Masaaki Suzuki
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Patent number: 7504179Abstract: A secondary cell module and the method of its production, which comprises a combination cell formed by connecting the positive and/or the negative electrode terminal(s) of multiple secondary cells in series and/or in parallel with each other through a metal bus-bar and a casing which contains the combination cell, wherein the secondary cell is formed in a sheet shape and comprises sheet-type internal electrode couple, electrolytic solution and a flexible outer wrapper of envelope type which contains them in a sealed state. The secondary cell module is of a simple structure and it can be small-sized and light-weighted or thin-shaped as necessary and the heat which generates inside the cell can be efficiently diffused to outside, thereby enabling the production of cells of high capacity with a high degree of freedom in designing its shape as well as supreme productivity.Type: GrantFiled: May 8, 2003Date of Patent: March 17, 2009Assignees: Nissan Motor Co., Ltd., Enax, Inc.Inventors: Yuuji Tanjou, Hideaki Horie, Kyouichi Watanabe, Takanori Ito, Osamu Shimamura, Hironori Ozawa, Takao Takasaki, Kazunori Ozawa
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Patent number: 7501203Abstract: A battery includes a battery enclosure (3), a power-generating unit (50) accommodated in the battery enclosure (3), positive and negative terminal electrodes (1, 2). The battery enclosure (3) is composed of a laminate film compounded of metal and a polymer material, and has a rectangular shape. The power-generating unit (50) includes positive electrode collectors (5), negative electrode collectors (7) and separators (8). The positive and negative terminal electrodes (1, 2) have dimensions substantially equal to those of the positive and negative electrode collectors (5, 7), respectively. Further, the positive and negative terminal electrodes (1, 2) protrude from mutually different sides of the battery enclosure (3). The positive terminal electrode (1) is formed by protruding the positive electrode collectors (5) from the battery enclosure (3) in a state where end portions of the positive electrode collectors (5) are mutually stacked.Type: GrantFiled: December 11, 2002Date of Patent: March 10, 2009Assignee: Nissan Motor Co., Ltd.Inventors: Osamu Shimamura, Kyoichi Watanabe, Hideaki Horie, Yuuji Tanjou, Takaaki Abe
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Publication number: 20090047575Abstract: Disclosed is a cell with a power-generating element and an outer package. The power-generating element includes a unit cell layer including a first electrode, a second electrode and an electrolyte layer disposed between the first and second electrodes. In the first electrode, a first collector is provided with one of a positive electrode active material layer and a negative electrode active material layer. In the second electrode, a second collector is provided with the other one of the positive and negative electrode active material layers. The first and second collectors have thicknesses such that when a conductor from outside penetrates at least two cells and a short circuit is formed between two cells via the conductor, shorted portions of the first and second collectors are fused by the heat generated by the current before the temperature of the cells reaches a predetermined value so that the short circuit is blocked.Type: ApplicationFiled: August 12, 2008Publication date: February 19, 2009Applicant: NISSAN MOTOR CO., LTD.Inventors: Takaaki Abe, Kazuki Miyatake, Osamu Shimamura, Masakazu Kobayashi, Hideaki Horie, Kyoichi Watanabe, Yoshio Shimoida