Patents by Inventor Noritoshi Imamura
Noritoshi Imamura 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: 10587127Abstract: There is provided a charging device including a charging voltage providing unit configured to provide a maximum charging voltage for an electricity storage unit, wherein the electricity storage unit includes a plurality of battery cells, and wherein the maximum charging voltage satisfies an equation (1) below: Maximum Charging Voltage=Total Battery Voltage+(Fully Charged Voltage?Maximum Cell Voltage)*n (1) wherein n represents a total number of the battery cells connected in series.Type: GrantFiled: March 18, 2015Date of Patent: March 10, 2020Assignee: Murata Manufacturing Co., Ltd.Inventors: Naoyuki Sugeno, Hisato Asai, Eiji Kumagai, Noritoshi Imamura, Koji Umetsu
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Patent number: 10505376Abstract: Provided is a power storage apparatus, including: series circuits, the series circuits being formed of first coils and first switching elements, the first coils and the first switching elements being connected to a plurality of battery units in parallel; second coils electromagnetically coupled to the first coils; second switching elements connected to the second coils in series; a capacitor inserted between two common power source lines for commonly supplying voltage to both ends of the series circuits of the second coils and the second switching element related to the plurality of battery units; and a control unit that supplies a control pulse signal to the first switching element and the second switching element for equalizing voltage of each of the plurality of battery units, in which an amount of charge obtained by dividing an amount of transferred charge necessary for eliminating a voltage difference between the first battery unit and the second battery unit into 10 or more is transferred by switching oType: GrantFiled: July 24, 2015Date of Patent: December 10, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Naoyuki Sugeno, Kohki Watanabe, Noritoshi Imamura, Yusuke Suzuki, Takuma Hashimoto
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Patent number: 10389142Abstract: Provided is an electric storage system including: a plurality of electric storage devices including a plurality of modules, a battery management unit, and a line concentrator connected with the battery management unit; wherein the plurality of modules include a battery unit, a voltage measurement unit, a temperature measurement unit and a current measurement unit, and wherein the battery management unit is configured to control at least one of the plurality of electric storage devices based on an instruction transmitted from the line concentrator.Type: GrantFiled: June 25, 2015Date of Patent: August 20, 2019Assignee: Murata Manufacturing Co., Ltd.Inventors: Naoyuki Sugeno, Kohki Watanabe, Kazuharu Yanagihara, Noritoshi Imamura, Yusuke Suzuki
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Patent number: 10361575Abstract: A power storage apparatus includes a plurality of power storage modules connected in series and a control apparatus that controls each power storage module. The power storage module includes a battery section, a controller, a communication unit, a first insulator that insulates the controller from the communication unit, and a second insulator having a withstand voltage higher than a withstand voltage of the first insulator. The second insulator is provided between the communication unit of each power storage module and the control apparatus.Type: GrantFiled: December 21, 2015Date of Patent: July 23, 2019Assignee: Murata Manufacturing Co., Ltd.Inventors: Naoyuki Sugeno, Koji Umetsu, Noritoshi Imamura, Hiroaki Ono, Kazumi Sato, Atsushi Ozawa
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Patent number: 10069311Abstract: A power storage device includes: power storage units each including at least one battery, the power storage units being connected in series; cell balance units connected in parallel to the respective power storage units via switches; and a control unit that performs control to charge the power storage units with a first constant current value, and, when the power storage unit having the highest voltage among the power storage units reaches a first potential, connect the corresponding one of the cell balance units to the power storage unit having the highest voltage, and switch the charging current to a second constant current value that is smaller than the first constant current value.Type: GrantFiled: June 26, 2014Date of Patent: September 4, 2018Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Naoyuki Sugeno, Kohki Watanabe, Masumi Terauchi, Shuichi Takizawa, Noritoshi Imamura, Koji Umetsu
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Publication number: 20170373520Abstract: A power storage apparatus includes a plurality of power storage modules connected in series and a control apparatus that controls each power storage module. The power storage module includes a battery section, a controller, a communication unit, a first insulator that insulates the controller from the communication unit, and a second insulator having a withstand voltage higher than a withstand voltage of the first insulator. The second insulator is provided between the communication unit of each power storage module and the control apparatus.Type: ApplicationFiled: December 21, 2015Publication date: December 28, 2017Inventors: Naoyuki SUGENO, Koji UMETSU, Noritoshi IMAMURA, Hiroaki Ono, Kazumi SATO, Atsushi OZAWA
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Publication number: 20170271889Abstract: Provided is a power storage apparatus, including: series circuits, the series circuits being formed of first coils and first switching elements, the first coils and the first switching elements being connected to a plurality of battery units in parallel; second coils electromagnetically coupled to the first coils; second switching elements connected to the second coils in series; a capacitor inserted between two common power source lines for commonly supplying voltage to both ends of the series circuits of the second coils and the second switching element related to the plurality of battery units; and a control unit that supplies a control pulse signal to the first switching element and the second switching element for equalizing voltage of each of the plurality of battery units, in which an amount of charge obtained by dividing an amount of transferred charge necessary for eliminating a voltage difference between the first battery unit and the second battery unit into 10 or more is transferred by switching oType: ApplicationFiled: July 24, 2015Publication date: September 21, 2017Inventors: NAOYUKI SUGENO, KOHKI WATANABE, NORITOSHI IMAMURA, YUSUKE SUZUKI, TAKUMA HASHIMOTO
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Publication number: 20170207637Abstract: Provided is an electric storage system including: a plurality of electric storage devices including a plurality of modules, a battery management unit, and a line concentrator connected with the battery management unit; wherein the plurality of modules include a battery unit, a voltage measurement unit, a temperature measurement unit and a current measurement unit, and wherein the battery management unit is configured to control at least one of the plurality of electric storage devices based on an instruction transmitted from the line concentrator.Type: ApplicationFiled: June 25, 2015Publication date: July 20, 2017Inventors: Naoyuki SUGENO, Kohki WATANABE, Kazuharu YANAGIHARA, Noritoshi IMAMURA, Yusuke SUZUKI
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Patent number: 9608451Abstract: The present disclosure provides an electric power supplying apparatus including: an electric storage device; and a control portion configured to control processing for mixing an output from the electric storage device, and an electric power of an external electric power system with each other in accordance with at least one of a peak shift command, a load electric power, and a remaining capacity of the electric storage device, wherein an alternating current electric power is formed in the mixing processing. When the electric power supplying apparatus further includes an electric power generating apparatus, processing for mixing an output from the electric power generating apparatus, an output from the electric storage device, and an electric power of the external electric power system with one another, is controlled.Type: GrantFiled: March 28, 2013Date of Patent: March 28, 2017Assignee: Sony CorporationInventors: Naoyuki Sugeno, Noritoshi Imamura, Eiji Kumagai, Koji Umetsu, Atsushi Minami, Masayuki Yasuda
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Patent number: 9537309Abstract: There is provided a power supply circuit including a first series regulator including a first semiconductor element and a first constant voltage source, and a second series regulator including a second semiconductor element and a second constant voltage source, wherein the first series regulator and the second series regulator are cascaded and an input voltage to the first series regulator is a high voltage equal to or greater than 500 V.Type: GrantFiled: April 1, 2014Date of Patent: January 3, 2017Assignee: Sony CorporationInventors: Raghunath Bellala, Noritoshi Imamura
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Publication number: 20160218528Abstract: A power storage device includes: power storage units each including at least one battery, the power storage units being connected in series; cell balance units connected in parallel to the respective power storage units via switches; and a control unit that performs control to charge the power storage units with a first constant current value, and, when the power storage unit having the highest voltage among the power storage units reaches a first potential, connect the corresponding one of the cell balance units to the power storage unit having the highest voltage, and switch the charging current to a second constant current value that is smaller than the first constant current value.Type: ApplicationFiled: June 26, 2014Publication date: July 28, 2016Inventors: Naoyuki SUGENO, Kohki WATANABE, Masumi TERAUCHI, Shuichi TAKIZAWA, Noritoshi IMAMURA, Koji UMETSU
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Publication number: 20140306672Abstract: There is provided a power supply circuit including a first series regulator including a first semiconductor element and a first constant voltage source, and a second series regulator including a second semiconductor element and a second constant voltage source, wherein the first series regulator and the second series regulator are cascaded and an input voltage to the first series regulator is a high voltage equal to or greater than 500 V.Type: ApplicationFiled: April 1, 2014Publication date: October 16, 2014Applicant: Sony CorporationInventors: Raghunath BELLALA, Noritoshi IMAMURA
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Publication number: 20130264865Abstract: The present disclosure provides an electric power supplying apparatus including: an electric storage device; and a control portion configured to control processing for mixing an output from the electric storage device, and an electric power of an external electric power system with each other in accordance with at least one of a peak shift command, a load electric power, and a remaining capacity of the electric storage device, wherein an alternating current electric power is formed in the mixing processing. When the electric power supplying apparatus further includes an electric power generating apparatus, processing for mixing an output from the electric power generating apparatus, an output from the electric storage device, and an electric power of the external electric power system with one another, is controlled.Type: ApplicationFiled: March 28, 2013Publication date: October 10, 2013Applicant: Sony CorporationInventors: Naoyuki Sugeno, Noritoshi Imamura, Eiji Kumagai, Koji Umetsu, Atsushi Minami, Masayuki Yasuda
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Patent number: 7254045Abstract: A power factor is improved using a simplified structure without particularly providing a power factor improving circuit, and high efficiency is obtained.Type: GrantFiled: December 24, 2003Date of Patent: August 7, 2007Assignee: Sony CorporationInventor: Noritoshi Imamura
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Patent number: 7023711Abstract: The object of the present invention is to improve the power factor and at the same time to obtain a high efficient operation.Type: GrantFiled: July 22, 2004Date of Patent: April 4, 2006Assignee: Sony CorporationInventor: Noritoshi Imamura
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Publication number: 20050243492Abstract: A power factor is improved using a simplified structure without particularly providing a power factor improving circuit, and high efficiency is obtained.Type: ApplicationFiled: December 24, 2003Publication date: November 3, 2005Inventor: Noritoshi Imamura
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Publication number: 20050117371Abstract: The object of the present invention is to improve the power factor and at the same time to obtain a high efficient operation.Type: ApplicationFiled: July 22, 2004Publication date: June 2, 2005Inventor: Noritoshi Imamura
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Patent number: 6175219Abstract: A booster type converter (19) wherein a boosting inductor is constituted from a transformer (20) provided with an auxiliary winding (20b), a capacitor (26) is connected to the auxiliary winding, whereby the capacitor is charged by means of resonance of a leakage inductance of the transformer (20) and the capacitor (26), and at the same time, it makes possible to conduct zero voltage switching of the booster type converter (19) on the basis of the electric charge charged in the capacitor, whereby it is intended to attain high efficiency in the booster type converter.Type: GrantFiled: August 25, 1999Date of Patent: January 16, 2001Assignee: Sony CorporationInventors: Noritoshi Imamura, Katsumi Kobori
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Patent number: 6130825Abstract: In a switching power supply, primary-side MOS transistors are alternately turned on, so that a resonant current flows into the primary winding of a transformer and an alternate power is transferred to the secondary side. The alternate voltage generated at the secondary winding is applied by the voltage generated at the wound-up secondary winding to the gates of secondary-side MOS transistors such that they are turned on respectively in periods when the polarity of the voltage is positive. Rectified currents flow into a capacitor through a choke coil to perform synchronous rectification. If the voltage of a smoothing capacitor becomes higher than the alternate output voltage when the transformer is inverted, reverse currents flow into the secondary-side MOS transistors. With the counterelectromotive force of the choke coil, the reverse currents flowing when the transformer is inverted are suppressed, and the efficiency of the switching power supply is prevented from decreasing.Type: GrantFiled: March 11, 1999Date of Patent: October 10, 2000Assignee: Sony CorporationInventors: Noritoshi Imamura, Katsumi Kobori
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Patent number: 6072701Abstract: In a switching power source, by alternately turning on the first and second MOS transistors, a resonance current flows to a primary winding of a transformer, and an alternate current is transmitted to a secondary side. With respect to an alternate signal generated in a secondary winding, a gate voltage is applied so that the third MOS transistor and the fourth MOS transistor are conductive, respectively, while the polarity of the alternate signal is positive. Rectifying currents are flowed to a capacitor and a full-wave rectification is executed. Since a control signal for synchronous control is supplied from a signal source to control the first and second switching elements via transformers, a switching timing can be accurately coincided with an on/off timing of a synchronous rectifying device by a simple circuit. The efficiency of a current resonance type switching power source is thus improved.Type: GrantFiled: April 9, 1999Date of Patent: June 6, 2000Assignee: Sony CorporationInventors: Nobuo Sato, Yuji Sekikawa, Noritoshi Imamura