Patents by Inventor Kenji Hosaka

Kenji Hosaka 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).

  • Patent number: 8785041
    Abstract: 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: Grant
    Filed: December 11, 2009
    Date of Patent: July 22, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Shiho Inoue, Hideaki Horie, Kenji Hosaka, Osamu Shimamura, Shigeo Ibuka
  • Patent number: 8734984
    Abstract: When a bipolar battery is manufactured, a bipolar electrode and a separator are prepared first. Then, one electrode (for example, a positive electrode) out of positive and negative electrodes is applied with such an amount of electrolyte as being exposed on a surface of the one electrode. Then, the separator is arranged on the surface of the one electrode applied with the electrolyte, thus forming a sub-assembly unit. Then, a plurality of the sub-assembly units are layered, and the electrolyte applied to the one electrode is made to permeate through the separator to the other electrode, thus forming an assembly unit.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: May 27, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Gen Takayama, Kenji Hosaka, Teruo Segawa, Hajime Satou, Hideaki Horie, Takahiro Iwasaki, Yoshio Shimoida
  • Patent number: 8715861
    Abstract: A bipolar secondary battery is provided with an electric power generating unit, a pair of terminal plates. The electric power generating unit includes a plurality of bipolar electrodes stacked on one another with an electrolyte layer disposed between the bipolar electrodes and separating the bipolar electrodes. Each of the bipolar electrodes includes a collector with a positive electrode active material layer formed on a first side surface of the collector, and a negative electrode active material layer formed on a second side surface of the collector. The first terminal plate is connected to a first stacking direction facing end of the electric power generating unit. The second terminal plate is connected to a second stacking direction facing end of the electric power generating unit. At least one of the terminal plates includes an electric current suppressing device that suppresses an electric current occurring when an internal short circuit occurs in the electric power generating unit.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: May 6, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Sohei Suga, Masanori Aoyagi, Kenji Ohara, Yasuo Ohta, Junji Katamura, Motoharu Obika, Kenji Hosaka, Hideaki Horie, Shigeo Watanabe
  • Patent number: 8691431
    Abstract: The present invention is intended to provide a method of producing a sealing structure of a bipolar battery capable of improving the sealing capability by means of solidifying the joint between a resin collector comprising a thermosetting resin before the setting reaction and a sealing layer, a method of producing the bipolar battery, and the sealing structure of the bipolar battery and the bipolar battery. The method of producing the sealing structure of the bipolar battery comprises s step of producing the sealing assembly 80 by joining the first sealing layer 81 consisting of thermosetting resin before the thermosetting reaction with the second sealing layer 82 consisting of the thermoplastic resin, and a step of producing the collector assembly 90 formed by sealing the contact area of the sealing assembly and the resin collector 60 by joining the sealing assembly with the thermosetting resin after the thermosetting reaction.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: April 8, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Motoharu Obika, Kenji Hosaka
  • Patent number: 8663833
    Abstract: 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: Grant
    Filed: October 31, 2008
    Date of Patent: March 4, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kenji Hosaka, Hideaki Horie, Yamamura Yuichiro, Yasuhiro Yanagihara, Osamu Shimamura, Yoshio Shimoida
  • Patent number: 8574745
    Abstract: Provided is a resin composition superior in the adhesiveness to a metal and having high organic solvent resistance, particularly, a resin composition preferable as a sealant for an organic electrolyte battery, which shows superior adhesiveness to a terminal or a collector made of a highly heat resistant metal such as stainless steel and nickel, does not easily develop degradation even when contacted with an organic electrolytic solution at a high temperature, and does not easily influence an electrolytic solution, and a highly reliable organic electrolyte battery wherein leaching of an electrolytic solution from an electrolyte layer is prevented by the resin composition. A resin composition containing (A) an epoxy resin containing at least (E1) an epoxy resin having an aromatic ring and an alicyclic skeleton and (B) a latent curing agent.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: November 5, 2013
    Assignees: Nissan Motor Co., Ltd., Ajinomoto Co., Inc.
    Inventors: Hiroshi Amano, Keiji Ogino, Kenji Hosaka, Ryouichi Senbokuya, Yoshio Shimoida, Hideaki Horie
  • Publication number: 20130236779
    Abstract: An electrode structure includes a substrate, an electrode active material layer formed on the substrate and divided into a plurality of portions on a side of a surface thereof, and a high resistance member having an electric resistance higher than that of an electrolyte. The high resistance member is formed on at least a part of a parting portion formed between the divided portions of the electrode active material layer. A method for producing an electrode structure, and a bipolar battery using the electrode structure are also disclosed.
    Type: Application
    Filed: April 27, 2011
    Publication date: September 12, 2013
    Inventors: Kazuki Miyatake, Kenji Hosaka, Motoharu Obika, Hiroshi Miyakubo
  • Patent number: 8481197
    Abstract: A bipolar secondary battery includes a plurality of bipolar electrodes, each including a current collector that has a positive electrode layer on one surface thereof and a negative electrode layer on the opposite surface thereof. A separator is disposed between adjacent two bipolar electrodes such that the positive electrode layer of one bipolar electrode and the negative electrode layer of the adjacent bipolar electrode adjacent are opposed to each other along the length of the separator. The positive electrode layer and the negative electrode layer are formed with protrudent portions disposed at positions offset from each other along a length of the current collector.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: July 9, 2013
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Masanobu Sato, Kenji Hosaka, Hideaki Horie, Yoshio Shimoida, Masanori Aoyagi
  • Publication number: 20130157092
    Abstract: A voltage detection terminal (27a-27e, 27aa-27ee, 27aaa-27eee) and a discharge terminal (21a-21e) are connected to a peripheral edge portion of a collector (4a-4e) of a bipolar battery (2). Assuming a first straight line (Da1) that connects a centroid of the collector (4a-4e) and the voltage detection terminal (27a-27e) and a second straight line (Da2) that is orthogonal to the first straight line (Da1), the discharge terminal (21a-21e) is disposed on an opposite side of the second straight line (Da2)-the voltage detection terminal (27a-27e). A requirement relating to measurement of a voltage of the collector (4a-4e) and a requirement relating to discharge are thereby both satisfied.
    Type: Application
    Filed: August 4, 2011
    Publication date: June 20, 2013
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Naoto Suzuki, Kenji Hosaka, Takaaki Abe, Yasuhito Miyazaki, Hirotatsu Kamimura
  • Patent number: 8445139
    Abstract: The disclosure relates to bipolar cells including electrodes surrounding a collector. Embodiments of the bipolar cells include a collector containing a high-polymer material. The disclosure also relates to bipolar electrode batteries containing bipolar cells including a collector body containing electrically conductive high-polymer or electrically conductive particles distributed in a high-polymer. By adding such high molecular weight polymer material to the collector, the weight of the collector may be reduced and the output power density per weight of the battery may be improved. The disclosure further relates to methods of forming collecting bodies and electrodes for bipolar cells using an inkjet printing method. Bipolar cells according to the present invention may be used to fabricate batteries such as lithium ion batteries, which may be connected to form battery modules used, for example, to provide electrical power for a motor vehicle.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: May 21, 2013
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kenji Hosaka, Osamu Shimamura, Hideaki Horie, Takamitsu Saito, Takuya Kinoshita, Takaaki Abe, Naoto Kiriu
  • 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: 8410372
    Abstract: A wiring board to be inserted between collector foils of each unit cell in a stacked battery includes a comb-shaped insulating substrate and a wiring layer. The insulating substrate has a plurality of teeth and a rod, and the wiring layer is formed on the insulating substrate and includes a plurality of lead wires individually extending from a distal end of each of the plurality of teeth to an end of the rod to deliver a current of a potential across a conductive member being in contact with the distal ends of the teeth to the end of the rod.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: April 2, 2013
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takuya Kinoshita, Kenji Hosaka, Hajime Satou, Osamu Shimamura
  • Patent number: 8404002
    Abstract: An apparatus and a method for manufacturing a bipolar battery are disclosed, which are capable of restraining the introduction of a bubble, resulting in superior battery performance. A bipolar battery is disclosed for preparing an electrolyte layer, which includes permeable separators such that the electrolytes can penetrate therein and a bipolar electrode wherein a cathode is formed at one side of a collector and an anode is formed at another side of the collector. Then, the electrolyte layers are stacked upon one another. When the electrolyte layer is provided to the bipolar electrode, bubbles within the electrolyte layer are exhausted from one side to another side of the separator via the separator.
    Type: Grant
    Filed: November 22, 2007
    Date of Patent: March 26, 2013
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Teruo Segawa, Hajime Sato, Kenji Hosaka, Gen Takayama
  • Publication number: 20130071741
    Abstract: A negative electrode for a secondary battery according to the present invention has a collector and a negative electrode active material layer formed on a surface of the collector and containing negative electrode active material particles. In the negative electrode active material layer, an insulating material is arranged between the negative electrode active material particles so as not to develop conductivity by a percolation path throughout the negative electrode active material layer. It is possible in this configuration to effectively prevent the occurrence of a short-circuit current due to an internal short circuit and the generation of heat due to such short-circuit current flow in the secondary battery while securing the battery performance of the secondary battery.
    Type: Application
    Filed: May 25, 2011
    Publication date: March 21, 2013
    Inventors: Kenji Ohara, Sohei Suga, Yasuo Ohta, Tomoya Kubota, Kazuyuki Sakamoto, Takaaki Abe, Satoru Ichikawa, Kenji Hosaka, Kosuke Hagiyama, Hiroshi Miyakubo
  • Publication number: 20130065097
    Abstract: A bipolar secondary battery comprises laminated bodies. The laminated body comprises bipolar electrodes laminated via an electrolyte layer. The bipolar electrode comprises a positive electrode active material layer and a negative electrode active material layer formed on surfaces of a current collector. A positive electrode is formed on one end of the laminated bodies and a negative electrode is formed on another end. A temperature sensitive resistor having a smaller area than an electrical reaction area of the positive electrode active material layer and the negative electrode active material layer is arranged between the positive electrode and the negative electrode of a pair of adjacent laminated bodies, thereby suppressing a temperature increase caused by a high current by increasing the resistance in response to the flow of the high current into the bipolar secondary battery such as when an external circuit is shorted.
    Type: Application
    Filed: May 17, 2011
    Publication date: March 14, 2013
    Inventors: Kenji Hosaka, Hirotatsu Kamimura, Shiho Inoue, Yasutaka Nakamura, Eiji Minegishi
  • Publication number: 20130059179
    Abstract: A battery main body housed in a case comprises one laminated body composed of a plurality of bipolar electrodes laminated with an electrolyte layer therebetween or comprises a plurality of laminated bodies connected in series. A positive electrode current collecting plate and a negative electrode current collecting plate each having one surface joined to the inner peripheral surface of the case and the other surface joined to one end of the battery main body respectively extend to the outside of the case. By providing a cutoff mechanism for cutting off an electrical connection between the positive electrode current collecting plate and the negative electrode current collecting plate via the battery main body according to an expansion deformation of the case, a current path in a bipolar secondary battery is interrupted when the short-circuit current occurs, thereby protecting the bipolar secondary battery from a short-circuit current.
    Type: Application
    Filed: May 17, 2011
    Publication date: March 7, 2013
    Inventors: Kenji Hosaka, Shiho Inoue, Masaaki Suzuki, Kazuki Miyatake
  • Patent number: 8304103
    Abstract: A battery structure for improving a heat dissipating property and a vibration absorbing performance. The battery structure comprises a plurality of unit cell layers, each formed by alternately stacking a cathode active material layer formed on a surface of one collector, a separator for retaining an electrolyte and an anode active material layer formed on a surface of another collector. The battery structure also comprises a heat dissipating member disposed between at least one unit cell layer and another unit cell layer.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: November 6, 2012
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kyoichi Watanabe, Hajime Sato, Kenji Hosaka, Hideaki Horie
  • Publication number: 20120171567
    Abstract: The present invention is intended to provide a method of producing a sealing structure of a bipolar battery capable of improving the sealing capability by means of solidifying the joint between a resin collector comprising a thermosetting resin before the setting reaction and a sealing layer, a method of producing the bipolar battery, and the sealing structure of the bipolar battery and the bipolar battery. The method of producing the sealing structure of the bipolar battery comprises s step of producing the sealing assembly 80 by joining the first sealing layer 81 consisting of thermosetting resin before the thermosetting reaction with the second sealing layer 82 consisting of the thermoplastic resin, and a step of producing the collector assembly 90 formed by sealing the contact area of the sealing assembly and the resin collector 60 by joining the sealing assembly with the thermosetting resin after the thermosetting reaction.
    Type: Application
    Filed: February 7, 2011
    Publication date: July 5, 2012
    Inventors: Motoharu Obika, Kenji Hosaka
  • Publication number: 20120156546
    Abstract: Provided is a resin composition superior in the adhesiveness to a metal and having high organic solvent resistance, particularly, a resin composition preferable as a sealant for an organic electrolyte battery, which shows superior adhesiveness to a terminal or a collector made of a highly heat resistant metal such as stainless steel and nickel, does not easily develop degradation even when contacted with an organic electrolytic solution at a high temperature, and does not easily influence an electrolytic solution, and a highly reliable organic electrolyte battery wherein leaching of an electrolytic solution from an electrolyte layer is prevented by the resin composition. A resin composition containing (A) an epoxy resin containing at least (E1) an epoxy resin having an aromatic ring and an alicyclic skeleton and (B) a latent curing agent.
    Type: Application
    Filed: December 14, 2011
    Publication date: June 21, 2012
    Inventors: Hiroshi Amano, Keiji Ogino, Kenji Hosaka, Ryouichi Senbokuya, Yoshio Shimoida, Hideaki Horie
  • Patent number: 8148010
    Abstract: A bipolar battery and a battery assembly unit that reduces a current density change in a battery element is disclosed. The bipolar battery comprises a battery element configured by alternately stacking a bipolar electrode and an electrolyte layer, as well as cathode and anode terminal plates electrically connected to the battery element so as to extract the current from the battery element. In the bipolar battery, the total electrical resistance of the cathode and anode terminal plates along the surface direction is smaller than the total electrical resistance of the battery element along the stacking direction between the cathode and anode terminal plates.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: April 3, 2012
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kenji Hosaka, Hideaki Horie, Hajime Satou, Yoshio Shimoida, Teruo Segawa, Gen Takayama, Ohtani Yoshihiko