Patents by Inventor Tomokazu Yamauchi
Tomokazu Yamauchi 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: 7060116Abstract: The combined battery of the present invention includes two end plates and a plurality of general cells stacked adjacent each other and bound by two end plates. The general cells are provided with a battery container made of resin, and bound by two end plates with a binding force equal to or lower than a threshold value determined based on the number and the compressibility of the cells and the stiffness of the battery container, in such a manner that no more than a predetermined amount of irreversible deformation will be caused in the battery container.Type: GrantFiled: April 12, 2005Date of Patent: June 13, 2006Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidoshi Kabushiki KaishaInventors: Shuhei Marukawa, Ko Watanabe, Toyohiko Eto, Masayoshi Iwase, Tomokazu Yamauchi, Takahiko Miki
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Patent number: 7046091Abstract: A power amplifier able to minimize the deterioration of the linearity with respect to fluctuations in ambient temperature, wherein a first terminal of a first resistance element and a first terminal of a second resistance with a temperature coefficient smaller than that of the first resistance element are connected, the connection point is connected to a gate terminal of an FET, a second terminal of the first resistance element is connected to a bias voltage supply terminal, a second terminal of the second resistance element is connected to the ground potential, a drain terminal of the FET is connected to a power source voltage supply terminal, a source terminal is connected to the ground potential, and the FET and the first resistance element are constituted by semiconductor devices formed on the same semiconductor substrate.Type: GrantFiled: March 11, 2004Date of Patent: May 16, 2006Assignee: Sony CorporationInventors: Toshiyuki Koimori, Tomokazu Yamauchi
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Publication number: 20060100056Abstract: In response to a start request of an engine in setting of a gearshift position SP to a drive (D) position, the control procedure sets a relatively small value N1 to a threshold value Nref (step S120) and starts fuel injection and ignition of the engine when a rotation speed Ne of the engine reaches or exceeds the threshold value Nref (=N1) (steps S160 to S180). This ensures a quick start of the engine. In response to a start request of the engine in setting of the gearshift position SP to a parking (P) position, on the other hand, the control procedure sets a greater value N2 than the value N1 to the threshold value Nref (step S140) and starts fuel injection and ignition of the engine when the rotation speed Ne of the engine reaches or exceeds the threshold value Nref (=N2) (steps S160 to S180). This effectively reduces potential vibrations at a start of the engine.Type: ApplicationFiled: November 8, 2005Publication date: May 11, 2006Inventor: Tomokazu Yamauchi
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Publication number: 20050186470Abstract: The combined battery of the present invention includes two end plates and a plurality of general cells stacked adjacent each other and bound by two end plates. The general cells are provided with a battery container made of resin, and bound by two end plates with a binding force equal to or lower than a threshold value determined based on the number and the compressibility of the cells and the stiffness of the battery container, in such a manner that no more than a predetermined amount of irreversible deformation will be caused in the battery container.Type: ApplicationFiled: April 12, 2005Publication date: August 25, 2005Applicants: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Shuhei Marukawa, Ko Watanabe, Toyohiko Eto, Masayoshi Iwase, Tomokazu Yamauchi, Takahiko Miki
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Publication number: 20050178594Abstract: A counterweight 40 attached to a crankshaft 38 has a projection 42, which is aligned with and faces an electromagnet 44 attached to a crank casing 46 when the crankshaft 38 is at a preset rotational position of ensuring good startability of an engine 22. Engine stop control starts a power supply to the electromagnet 44 to attract the projection 42 of the counterweight 40 at a timing when the projection 42 of the counterweight 40 is practically aligned with the electromagnet 44, on the condition that the revolution speed of the crankshaft 38 is lowered to or below a preset level immediately before a full stop of rotation of the crankshaft 38. This engine stop control stops the rotation of the crankshaft 38 and desirably holds the crankshaft 38 at the preset rotational position of ensuring good startability of the engine 22.Type: ApplicationFiled: February 14, 2005Publication date: August 18, 2005Inventors: Tomokazu Yamauchi, Nobuyuki Taki
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Patent number: 6893771Abstract: A battery assembly includes a plurality of battery modules electrically connected together, each battery module acting as a secondary battery and including an electrode group, an electrolyte, a container for housing the electrode group and the electrolyte, and a safety valve operating in accordance with the internal pressure of the container. The working pressure of each safety valve is set so that the safety valve of at least one battery module is opened when the at least one battery module has its maximum internal pressure or less during the charge equalization. It is possible to provide a battery assembly that can improve the reliability of the container strength by keeping the working pressure of each safety valve lower than the pressure that the container resists even under elevated temperature conditions.Type: GrantFiled: April 25, 2001Date of Patent: May 17, 2005Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Naoto Arai, Shinji Hamada, Munehisa Ikoma, Masayoshi Iwase, Tomokazu Yamauchi
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Publication number: 20040189394Abstract: A power amplifier able to minimize the deterioration of the linearity with respect to fluctuations in ambient temperature, wherein a first terminal of a first resistance element and a first terminal of a second resistance with a temperature coefficient smaller than that of the first resistance element are connected, the connection point is connected to a gate terminal of an FET, a second terminal of the first resistance element is connected to a bias voltage supply terminal, a second terminal of the second resistance element is connected to the ground potential, a drain terminal of the FET is connected to a power source voltage supply terminal, a source terminal is connected to the ground potential, and the FET and the first resistance element are constituted by semiconductor devices formed on the same semiconductor substrate.Type: ApplicationFiled: March 11, 2004Publication date: September 30, 2004Inventors: Toshiyuki Koimori, Tomokazu Yamauchi
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Patent number: 6602636Abstract: A battery module includes a plurality of cells accommodating an electrode plate group and an electrolyte, and a single integrated battery case for accommodating the plurality of cells. The ratio of the component resistance including the connecting resistance between the cells to the reactive resistance of the electrode plate group and the electrolyte in each cell, is set in the range of 1:99-40:60 at a temperature of 25° C. Thereby, the internal resistance per cell is reduced, and higher power output and improved service life characteristics are achieved.Type: GrantFiled: October 16, 2001Date of Patent: August 5, 2003Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Akihiro Taniguchi, Shinji Hamada, Noriyuki Fujioka, Toyohiko Eto, Munehisa Ikoma, Toshiyuki Sekimori, Kazuo Tojima, Masayoshi Iwase, Tomokazu Yamauchi
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Publication number: 20030118898Abstract: A battery module is constructed of an integral battery case which is constituted by forming a plurality of prismatic cell cases into a unitized body, wherein positive electrode plates and negative electrode plates laminated alternately upon one another with intervening separators are respectively accommodated in each of the cell cases, thereby constituting a plurality of cells, these cells being electrically connected in series. A plurality of such battery modules are arranged in a direction in which the electrode plates within each cell are laminated in a condition with coolant passages formed between the battery modules, and bound tightly together with end plates arranged at both ends in the direction of adjacent arrangement of the battery modules.Type: ApplicationFiled: February 7, 2003Publication date: June 26, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Tadao Kimura, Shinji Hamada, Yoshiaki Ogata, Tomokazu Yamauchi, Toshiyuki Sekimori
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Patent number: 6569561Abstract: A battery module is constructed of an integral battery case which is constituted by forming a plurality of prismatic cell cases into a unitized body, wherein positive electrode plates and negative electrode plates laminated alternately upon one another with intervening separators are respectively accommodated in each of the cell cases, thereby constituting a plurality of cells, these cells being electrically connected in series. A plurality of such battery modules are arranged in a direction in which the electrode plates within each cell are laminated in a condition with coolant passages formed between the battery modules, and bound tightly together with end plates arranged at both ends in the direction of adjacent arrangement of the battery modules.Type: GrantFiled: October 6, 2000Date of Patent: May 27, 2003Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Tadao Kimura, Shinji Hamada, Yoshiaki Ogata, Tomokazu Yamauchi, Toshiyuki Sekimori
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Publication number: 20020045095Abstract: A battery module includes a plurality of cells accommodating an electrode plate group and an electrolyte, and a single integrated battery case for accommodating the plurality of cells. The ratio of the component resistance including the connecting resistance between the cells to the reactive resistance of the electrode plate group and the electrolyte in each cell, is set in the range of 1:99-40:60 at a temperature of 25° C. Thereby, the internal resistance per cell is reduced, and higher power output and improved service life characteristics are achieved.Type: ApplicationFiled: October 16, 2001Publication date: April 18, 2002Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTDInventors: Akihiro Taniguchi, Shinji Hamada, Noriyuki Fujioka, Toyohiko Eto, Munehisa Ikoma, Toshiyuki Sekimori, Kazuo Tojima, Masayoshi Iwase, Tomokazu Yamauchi
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Publication number: 20020006541Abstract: A battery assembly includes a plurality of battery modules electrically connected together, each battery module acting as a secondary battery and including an electrode group, an electrolyte, a container for housing the electrode group and the electrolyte, and a safety valve operating in accordance with the internal pressure of the container. The working pressure of each safety valve is set so that the safety valve of at least one battery module is opened when the at least one battery module has its maximum internal pressure or less during the charge equalization. It is possible to provide a battery assembly that can improve the reliability of the container strength by keeping the working pressure of each safety valve lower than the pressure that the container resists even under elevated temperature conditions.Type: ApplicationFiled: April 25, 2001Publication date: January 17, 2002Inventors: Naoto Arai, Shinji Hamada, Munehisa Ikoma, Masayoshi Iwase, Tomokazu Yamauchi
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Publication number: 20020006545Abstract: The combined battery of the present invention includes two end plates and a plurality of general cells stacked adjacent each other and bound by two end plates. The general cells are provided with a battery container made of resin, and bound by two end plates with a binding force equal to or lower than a threshold value determined based on the number and the compressibility of the cells and the stiffness of the battery container, in such a manner that no more than a predetermined amount of irreversible deformation will be caused in the battery container.Type: ApplicationFiled: April 26, 2001Publication date: January 17, 2002Inventors: Shuhei Marukawa, Ko Watanabe, Toyohiko Eto, Masayoshi Iwase, Tomokazu Yamauchi, Takahiko Miki