Patents by Inventor Tomoyuki MATSUBARA
Tomoyuki MATSUBARA 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: 10859635Abstract: A first voltage detection circuit is connected by first voltage detection lines to each node in a plurality of cells connected in series and detects the voltage of each of the plurality of cells. A second voltage detection circuit is connected, by second voltage detection lines, to each node in the plurality of cells and detects the voltage of each of the plurality of cells. First capacitance elements are each connected between two first voltage detection lines connected to each cell. Second capacitance elements are each connected between two second voltage detection lines connected to each cell. A first charge drawing circuit draws charge from each node in the plurality of cells, via each first voltage detection line. A second charge drawing circuit draws charge from each node in the plurality of cells, via each second voltage detection line.Type: GrantFiled: February 20, 2017Date of Patent: December 8, 2020Assignee: SANYO Electric Co., Ltd.Inventors: Tomoyuki Matsubara, Masaki Yugou
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Patent number: 10680448Abstract: A voltage detection circuit detects the voltage of a plurality of serially connected cells in a power storage unit. The voltage detection circuit receives a supply of a power supply voltage from both ends of the plurality of cells. A DC-DC converter converts the voltage between both ends of the plurality of cells into another DC voltage. An adjustment circuit adjusts the power consumption of the plurality of cells. The adjustment circuit operates using the DC voltage generated by the DC-DC converter as the power supply voltage.Type: GrantFiled: October 5, 2016Date of Patent: June 9, 2020Assignee: SANYO Electric Co., Ltd.Inventors: Junya Yano, Tomoyuki Matsubara, Hidetsugu Mukae, Jun Asakura
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Patent number: 10627453Abstract: A integrated circuit includes a plurality of first connection terminals (410) and second connection terminals (420) for receiving an input of electrical signals, a first detection section, a second detection section, a plurality of switches (432), and a switch control section (430). The first detection section is connected to first connection terminals (410) and obtains input electrical signals. The second detection section is connected to second connection terminals (420). Each switch (432) connects adjacent second connection terminals (420) among second connection terminals (420) to each other, and are connected to each other in series. Switch control section (430) controls to turn off switches (432) and allows electrical signals input to second connection terminals (420) to be input to the second detection section, and controls to turn on any switch among switches (432) to bring adjacent second connection terminals (420) into electrical continuity.Type: GrantFiled: July 3, 2015Date of Patent: April 21, 2020Assignee: SANYO ELECTRIC CO., LTD.Inventors: Jun Asakura, Kimihiko Furukawa, Tomoyuki Matsubara
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Publication number: 20190074699Abstract: A voltage detection circuit detects the voltage of a plurality of serially connected cells in a power storage unit. The voltage detection circuit receives a supply of a power supply voltage from both ends of the plurality of cells. A DC-DC converter converts the voltage between both ends of the plurality of cells into another DC voltage. An adjustment circuit adjusts the power consumption of the plurality of cells. The adjustment circuit operates using the DC voltage generated by the DC-DC converter as the power supply voltage.Type: ApplicationFiled: October 5, 2016Publication date: March 7, 2019Applicants: Sanyo Electric Co., Ltd., Sanyo Electric Co., Ltd.Inventors: Junya Yano, Tomoyuki Matsubara, Hidetsugu Mukae, Jun Asakura
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Publication number: 20190067962Abstract: A management device includes a voltage detection circuit and a plurality of capacitor circuits. The voltage detection circuit is connected, by voltage detection lines, to each node in a plurality of cells connected in series, to detect the voltage of each of the plurality of cells. The plurality of capacitor circuits are respectively connected to between two of the voltage detection lines which are respectively connected to the cells. The capacitor circuits corresponding to the adjacent two cells, have capacitance values different from each other.Type: ApplicationFiled: February 20, 2017Publication date: February 28, 2019Applicant: SANYO Electric Co., Ltd.Inventors: Tomoyuki Matsubara, Kimihiko Furukawa
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Publication number: 20190056453Abstract: A first voltage detection circuit is connected by first voltage detection lines to each node in a plurality of cells connected in series and detects the voltage of each of the plurality of cells. A second voltage detection circuit is connected, by second voltage detection lines, to each node in the plurality of cells and detects the voltage of each of the plurality of cells. First capacitance elements are each connected between two first voltage detection lines connected to each cell. Second capacitance elements are each connected between two second voltage detection lines connected to each cell. A first charge drawing circuit draws charge from each node in the plurality of cells, via each first voltage detection line. A second charge drawing circuit draws charge from each node in the plurality of cells, via each second voltage detection line.Type: ApplicationFiled: February 20, 2017Publication date: February 21, 2019Applicant: SANYO Electric Co., Ltd.Inventors: Tomoyuki Matsubara, Masaki Yugou
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Patent number: 10056653Abstract: A plurality of cascade-connected voltage detection ICs detect each voltage of a plurality of battery cells connected in series and constituting an assembled battery, through a plurality of voltage detection lines. Power sources receive power from the assembled battery, for supplying power to the plurality of the voltage detection ICs. Communication lines connect between the plurality of the voltage detection ICs. A controlling circuit is connected to at least one of the plurality of the voltage detection ICs. First to third dummy resistors are connected to each of one or more of the voltage detection ICs which are not directly communicated to the controlling circuit out of the plurality of the voltage detection ICs. First to third switches turn on or off current supply through the first to third dummy resistors.Type: GrantFiled: November 18, 2014Date of Patent: August 21, 2018Assignee: SANYO ELECTRIC CO., LTD.Inventors: Kimihiko Furukawa, Tomoyuki Matsubara
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Patent number: 10048323Abstract: A power supply device includes: an assembled battery that is configured of N pieces of battery cells connected in series; (N+1) pieces of measurement lines that obtain analog signals corresponding to terminal potentials of the battery cells; a filter circuit that attenuates a specified frequency component of the inputted analog signals and outputs; and an analog/digital converter that converts the analog signals outputted from the filter circuit into digital signals. The filter circuit is configured of: (N+1) pieces of input terminals; (N+1) pieces of output terminals; (N+1) pieces of filter resistors; and (N+1) pieces of filter capacitors of which one ends respectively connected between the filter resistors and the output terminals and the other ends are connected to each other in common.Type: GrantFiled: April 24, 2015Date of Patent: August 14, 2018Assignee: SANYO ELECTRIC CO., LTD.Inventors: Jun Asakura, Tomoyuki Matsubara
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Publication number: 20170315181Abstract: A integrated circuit includes a plurality of first connection terminals (410) and second connection terminals (420) for receiving an input of electrical signals, a first detection section, a second detection section, a plurality of switches (432), and a switch control section (430). The first detection section is connected to first connection terminals (410) and obtains input electrical signals. The second detection section is connected to second connection terminals (420). Each switch (432) connects adjacent second connection terminals (420) among second connection terminals (420) to each other, and are connected to each other in series. Switch control section (430) controls to turn off switches (432) and allows electrical signals input to second connection terminals (420) to be input to the second detection section, and controls to turn on any switch among switches (432) to bring adjacent second connection terminals (420) into electrical continuity.Type: ApplicationFiled: July 3, 2015Publication date: November 2, 2017Inventors: JUN ASAKURA, KIMIHIKO FURUKAWA, TOMOYUKI MATSUBARA
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Publication number: 20170038434Abstract: A power supply device includes: an assembled battery (200) that is configured of N pieces of battery cells connected in series; (N+1) pieces of measurement lines (DL) that obtain analog signals corresponding to terminal potentials of the battery cells; a filter circuit (300) that attenuates a specified frequency component of the inputted analog signals and outputs; and an analog/digital converter (460) that converts the analog signals outputted from the filter circuit (300) into digital signals. The filter circuit (300) is configured of: (N+1) pieces of input terminals (310); (N+1) pieces of output terminals (320); (N+1) pieces of filter resistors (340); and (N+1) pieces of filter capacitors (360) of which one ends respectively connected between the filter resistors (340) and the output terminals (320) and the other ends are connected to each other in common.Type: ApplicationFiled: April 24, 2015Publication date: February 9, 2017Inventors: JUN ASAKURA, TOMOYUKI MATSUBARA
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Publication number: 20160261007Abstract: A plurality of cascade-connected voltage detection ICs detect each voltage of a plurality of battery cells connected in series and constituting an assembled battery, through a plurality of voltage detection lines. Power sources receive power from the assembled battery, for supplying power to the plurality of the voltage detection. Communication lines connect between the plurality of the voltage detection ICs. A controlling circuit is connected to at least one of the plurality of the voltage detection ICs. First to third dummy resistors are connected to each of one or more of the voltage detection ICs which are not directly communicated to the controlling circuit out of the plurality of the voltage detection ICs First to third switches turn on or off current supply through the first to third dummy resistors.Type: ApplicationFiled: November 18, 2014Publication date: September 8, 2016Applicant: SANYO Electric Co., Ltd.Inventors: KIMIHIKO FURUKAWA, TOMOYUKI MATSUBARA
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Publication number: 20110101920Abstract: A battery system includes a plurality of battery modules each including a plurality of battery cells. One battery module includes a main circuit board, and the other battery modules include auxiliary circuit boards. The main circuit board includes a cell characteristics detecting circuit that detects characteristics of each battery cell and a control-related circuit having a function related to control of the plurality of battery modules. The auxiliary circuit board includes a cell characteristics detecting circuit that detects characteristics of each battery cell, and does not include a control-related circuit having the function related to control of the plurality of battery modules. In a battery module of another battery system, a first printed circuit board, a board holder and a second printed circuit board are attached to one end surface frame.Type: ApplicationFiled: October 29, 2010Publication date: May 5, 2011Applicant: SANYO ELECTRIC CO., LTD.Inventors: Kazuhiro SEO, Keiji KISHIMOTO, Kazumi OHKURA, Yoshitomo NISHIHARA, Tomonori KUNIMITSU, Tomoyuki MATSUBARA