Patents by Inventor Nobuyasu Morishita
Nobuyasu Morishita 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: 6821673Abstract: In each of the cells that constitute an battery module, a plurality of positive electrode plates and negative electrode plates are layered parallel to the long lateral walls of prismatic cell cases with intervening separators therebetween, wherein lateral edge portions of the positive electrode plates protrude beyond the negative electrode plates on one side, and lateral edge portions of the negative electrode plates protrude beyond the group of positive electrode plates on the opposite side, the protruding portions forming lead portions.Type: GrantFiled: July 12, 2000Date of Patent: November 23, 2004Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Shinji Hamada, Hiroshi Inoue, Akihiro Taniguchi, Nobuyasu Morishita, Noriyuki Fujioka, Munehisa Ikoma, Yoshiaki Ogata
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Publication number: 20040229121Abstract: A group of electrodes are accommodated in a prismatic cell case of a rechargeable battery. Intervening separators are provided between positive and negative electrode plates arranged alternately in parallel to long lateral walls of the cell case. The positive electrode plates each include a lead portion having a surface on which at least one lead plate is attached. Lateral edges of the positive electrode plates protrude beyond the negative electrode plates on one side, and lateral edges of the negative electrode plates protrude beyond the group of positive electrode plates on the opposite side. The protruding portions form the lead portions. Upper open ends of the cell cases are closed by an integral lid member.Type: ApplicationFiled: June 23, 2004Publication date: November 18, 2004Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinji Hamada, Hiroshi Inoue, Akihiro Taniguchi, Nobuyasu Morishita, Noriyuki Fujioka, Munehisa Ikoma, Yoshiaki Ogata
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Publication number: 20040219429Abstract: A negative electrode of a battery, chiefly includes hydrogen absorption alloy particles each having a surface layer. The alloy particles satisfy R2/R1≧0.004 and 5 &mgr;m≦R1≦20 &mgr;m, or preferably 5 &mgr;m≦R1≦12.5 &mgr;m, where R1 is a half of a median diameter of the particles and R2 is thickness of the surface layers.Type: ApplicationFiled: June 1, 2004Publication date: November 4, 2004Applicants: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Shinichiro Ito, Hajime Seri, Kojiro Ito, Shinichi Yuasa, Nobuyasu Morishita
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Patent number: 6808549Abstract: A negative electrode of a battery, chiefly includes hydrogen absorption alloy particles each having a surface layer. The alloy particles satisfy R2/R1≧0.004 and 5 &mgr;m≦R1≦20 &mgr;m, or preferably 5 &mgr;m≦R1≦12.5 &mgr;m, where R1 is a half of a median diameter of the particles and R2 is thickness of the surface layers.Type: GrantFiled: May 16, 2002Date of Patent: October 26, 2004Assignees: Matsushita Electric Industrial Co., Ltd, Toyota Jidosha Kabushiki KaishaInventors: Shinichiro Ito, Hajime Seri, Kojiro Ito, Shinichi Yuasa, Nobuyasu Morishita
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Patent number: 6780538Abstract: A battery module is provided which includes multiple rechargeable batteries coupled together. The battery module includes multiple prismatic cell cases having short lateral walls and long lateral walls arranged side by side. Adjacent short lateral walls are integral with each other. The battery module includes holes extending through the short lateral walls of the cell cases at upper edge portions. The battery module also includes a pair of frame fittings that have base ends and protruding portions in each of the cell cases for connecting two adjacent cell cases. The protruding portions of the pair of frame fittings extend into the through holes in the upper edge portions of the short lateral walls of the cell cases from both sides and are welded together. Positive and negative electrode collector plates in the cell cases are respectively attached to the base ends of the frame fittings.Type: GrantFiled: June 6, 2003Date of Patent: August 24, 2004Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Shinji Hamada, Hiroshi Inoue, Akihiro Taniguchi, Nobuyasu Morishita, Noriyuki Fujioka, Munehisa Ikoma, Yoshiaki Ogata
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Patent number: 6713211Abstract: A square shaped battery includes: an electrode plate group including a belt-like positive electrode plate, a belt-like negative electrode plate, and a belt-like separator, the belt-like positive electrode plate, the belt-like negative electrode plate, and the belt-like separator being laminated and rolled up to form the electrode plate group; and a pair of power collectors disposed on sides of the electrode plate group for collecting electric power from the electrode plate group.Type: GrantFiled: March 23, 2001Date of Patent: March 30, 2004Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Nobuyasu Morishita, Shinichi Yuasa, Akihiro Taniguchi, Munehisa Ikoma
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Patent number: 6661201Abstract: The present invention provides a method for controlling battery charging and discharging in which a battery is charged and discharged such that a SOC (state of charge) value of the battery is increased/decreased to a predetermined range when the SOC value of the battery is in a predetermined range; and a range of the SOC values in which charging and discharging processes are performed sequentially varies and a range of the SOC values after the charging and discharging processes also sequentially varies.Type: GrantFiled: June 18, 2002Date of Patent: December 9, 2003Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Toshifumi Ueda, Nobuyasu Morishita
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Publication number: 20030203278Abstract: In each of the cells of a battery module, multiple positive electrode plates and multiple negative electrode plates are layered, each of the cells has short lateral walls and long lateral walls intervening separators are provided between the positive and negative electrodes, parallel to the long lateral walls of prismatic cell cases. Lateral edge portions of the positive electrode plates protrude beyond the group of negative electrode plates on one side, and lateral edge portions of the negative electrode plates protrude beyond the group of positive electrode plates on the opposite side. The cells are arranged side by side with adjacent short lateral walls that are integral with each other. Upper open ends of the cell cases are integrally closed with a single lid member.Type: ApplicationFiled: June 6, 2003Publication date: October 30, 2003Applicants: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Shinji Hamada, Hiroshi Inoue, Akihiro Taniguchi, Nobuyasu Morishita, Noriyuki Fujioka, Munehisa Ikoma, Yoshiaki Ogata
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Patent number: 6608465Abstract: A positive electrode for an alkaline storage battery having a high capacity and facilitating the manufacturing thereof and an alkaline storage battery using the same are provided. The positive electrode utilized includes active material powder containing nickel hydroxide and powder made of cobalt compounds, where a ratio of a cobalt compound with a valence of cobalt being 2.6 or more to the whole of cobalt compounds is 30 weight % or more.Type: GrantFiled: October 30, 2002Date of Patent: August 19, 2003Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Kojiro Ito, Kiyoshi Hayashi, Toshihiro Yamada, Nobuyasu Morishita, Shinichi Yuasa
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Patent number: 6605387Abstract: An alkaline storage battery of the present invention has a negative electrode comprising an AB5 type hydrogen storage alloy containing at least nickel as B element. The hydrogen storage alloy contains 1.5 to 5.0% by weight of a magnetic substance comprising metallic nickel. The above-mentioned alkaline storage battery can effect high output from the initial stage of charging and discharging cycles.Type: GrantFiled: November 2, 2000Date of Patent: August 12, 2003Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Toshifumi Ueda, Nobuyasu Morishita, Noriyuki Fujioka, Munehisa Ikoma
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Patent number: 6582483Abstract: A method for manufacturing a positive electrode for an alkaline storage battery that achieves excellent filing characteristics for an active material for the positive electrode and longer lifetime of the battery is provided. The method includes a first process of filling a paste of the active material for the positive electrode in a first porous metal sheet provided with a plurality of oblate pores whose major axes are arranged substantially in one direction, and a second process of pressing the first porous metal sheet that has undergone the first process using a roller press such that the one direction and a direction of a rotation axis of a roller in the roller press substantially are parallel, so as to produce a positive electrode sheet provided with a second porous metal sheet.Type: GrantFiled: May 8, 2001Date of Patent: June 24, 2003Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Nobuyasu Morishita, Kazuyuki Kusama, Satoshi Uda, Munehisa Ikoma
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Publication number: 20030108791Abstract: A positive electrode for an alkaline storage battery having a high capacity and facilitating the manufacturing thereof and an alkaline storage battery using the same are provided. The positive electrode utilized includes active material powder containing nickel hydroxide and powder made of cobalt compounds, where a ratio of a cobalt compound with a valence of cobalt being 2.6 or more to the whole of cobalt compounds is 30 weight % or more.Type: ApplicationFiled: October 30, 2002Publication date: June 12, 2003Applicants: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Kojiro Ito, Kiyoshi Hayashi, Toshihiro Yamada, Nobuyasu Morishita, Shinichi Yuasa
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Publication number: 20030091903Abstract: A separator for an alkaline storage battery includes a plurality of polyolefin resins. The polyolefin resins include a first polyolefin resin that is sulfonated, and a second polyolefin resin that is sulfonated. The degree of sulfonation of the first polyolefin resin is different from that of the second polyolefin resin. Thus, a novel separator having high liquid retention properties and high air permeability, and an alkaline storage battery using the same can be obtained.Type: ApplicationFiled: November 6, 2002Publication date: May 15, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Naoto Sato, Katsunori Komori, Nobuyasu Morishita
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Publication number: 20030091906Abstract: An alkaline storage battery includes a positive electrode, a negative electrode, a separator, and an alkaline electrolyte retained in the positive electrode, the negative electrode, and the separator. The alkaline storage battery further includes a first compound for adsorbing ammonia between the positive electrode and the negative electrode. The positive electrode comprises a second compound for increasing oxygen overvoltage at a time of overcharge. Thus, an alkaline storage battery with particularly little self-discharge can be provided.Type: ApplicationFiled: November 12, 2002Publication date: May 15, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Naoto Sato, Nobuyasu Morishita
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Patent number: 6545449Abstract: A method for controlling charge preventing an operation of a valve during charging and suppressing the false detection of the upper limit charging voltage due to the memory effect at the charge side in a secondary battery mounted on an automated guided vehicle is presented. The method includes charging the secondary battery at a charging current value of not less than 0.5 C and not more than 4.0 C; detecting current that flows in the secondary battery and calculating the remaining capacity by accumulating at least the detected current; and completing the charge to the secondary battery when the calculated remaining capacity is not less than the threshold value that is pre-set to not less than 60% and not more than 95%.Type: GrantFiled: April 9, 2002Date of Patent: April 8, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshifumi Ueda, Nobuyasu Morishita
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Publication number: 20030013020Abstract: An electrode plate for an alkaline storage battery of the present invention includes a conductive core material as a current collector, in which a plurality of through-holes are linearly provided in the core material so as to be parallel to a longitudinal direction of the core material, each through-hole having an aperture area of 10 mm2 or less and at least two pairs of opposite sides parallel to each other.Type: ApplicationFiled: May 17, 2002Publication date: January 16, 2003Inventors: Naoto Sato, Nobuyasu Morishita
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Publication number: 20030005982Abstract: A negative electrode of a battery, chiefly includes hydrogen absorption alloy particles each having a surface layer. The alloy particles satisfy R2/R1≧0.004 and 5 &mgr;m≦R1≦20 &mgr;m, or preferably 5 &mgr;m≦R1≦12.5 &mgr;m, where R1 is a half of a median diameter of the particles and R2 is thickness of the surface layers.Type: ApplicationFiled: May 16, 2002Publication date: January 9, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Shinichiro Ito, Hajime Seri, Kojiro Ito, Shinichi Yuasa, Nobuyasu Morishita
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Publication number: 20030003366Abstract: An alkaline rechargeable battery, having an electrode plate group including positive electrode plates and negative electrode plates stacked alternately with separators interposed therebetween, arranged in such a manner that a volume of the separators before the initial charge and discharge accounts for 30 to 60% of a volume of the electrode plate group.Type: ApplicationFiled: May 10, 2002Publication date: January 2, 2003Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Nobuyasu Morishita, Toshifumi Ueda, Akihiro Taniguchi
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Publication number: 20030001541Abstract: The present invention provides a method for controlling battery charging and discharging in which a battery is charged and discharged such that a SOC (state of charge) value of the battery is increased/decreased to a predetermined range when the SOC value of the battery is in a predetermined range; and a range of the SOC values in which charging and discharging processes are performed sequentially varies and a range of the SOC values after the charging and discharging processes also sequentially varies.Type: ApplicationFiled: June 18, 2002Publication date: January 2, 2003Inventors: Toshifumi Ueda, Nobuyasu Morishita
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Publication number: 20020182496Abstract: In a nickel-metal hydride rechargeable battery comprising a positive electrode of nickel hydroxide and a negative electrode of hydrogen-absorption alloy, prolonged battery lite is achieved by limiting the charge and discharge operations to be performed in the range of 20-60% of the hydrogen-absorption capacity of the hydrogen-absorption alloy.Type: ApplicationFiled: April 8, 2002Publication date: December 5, 2002Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Nobuyasu Morishita, Shinichiro Ito, Hajime Seri