Patents by Inventor Kunihisa Sekiguchi
Kunihisa Sekiguchi 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: 11387660Abstract: A sorting mechanism includes a flap that selects a first path connecting from a battery outlet of a charging section to a battery inlet of a first compartment section as a path to introduce a first battery to the first compartment section in a case of housing the first battery in the first compartment section, and that selects a second path connecting from the battery outlet of the charging section to a battery inlet of a second compartment section as a path to introduce a second battery to the second compartment section in a case of housing the second battery in the second compartment section.Type: GrantFiled: April 10, 2019Date of Patent: July 12, 2022Assignee: FDK CORPORATIONInventors: Takashi Kanou, Kenji Kitamura, Yasunari Mizoguchi, Kunihisa Sekiguchi
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Patent number: 10951048Abstract: A charging circuit includes a first power source circuit that supplies charging power to secondary batteries; a switch that controls the supply of the power; and a control device that performs switching control of the switch. The control device detects a voltage difference between the secondary batteries before starting charging; starts a timer and starts serial charging of the secondary batteries; on the condition that the voltage difference before the charging has been equal to or larger than a first threshold, if respective voltage values of the secondary batteries have both become equal to or larger than a second threshold before the timer expires, shortens a remaining time on the timer at that time point; and finishes the serial charging of the secondary batteries at the earlier of a time point when the secondary batteries have both become fully charged, or a time point when the timer has expired.Type: GrantFiled: January 27, 2017Date of Patent: March 16, 2021Assignee: FDK CORPORATIONInventors: Yasunari Mizoguchi, Kazuta Takeno, Kunihisa Sekiguchi, Kenji Kitamura, Takashi Kano
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Publication number: 20210036530Abstract: A sorting mechanism includes a flap that selects a first path connecting from a battery outlet of a charging section to a battery inlet of a first compartment section as a path to introduce a first battery to the first compartment section in a case of housing the first battery in the first compartment section, and that selects a second path connecting from the battery outlet of the charging section to a battery inlet of a second compartment section as a path to introduce a second battery to the second compartment section in a case of housing the second battery in the second compartment section.Type: ApplicationFiled: April 10, 2019Publication date: February 4, 2021Inventors: Takashi Kanou, Kenji Kitamura, Yasunari Mizoguchi, Kunihisa Sekiguchi
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Patent number: 10536014Abstract: A charger includes: a charging circuit which receives an electric power from external equipment and charges a secondary battery; a control device which determines a power supply capability of the external equipment on the basis of the electric power that is supplied to the charging circuit from the external equipment; and a display device that displays the power supply capability of the external equipment, which has been determined by the control device.Type: GrantFiled: May 26, 2016Date of Patent: January 14, 2020Assignee: FDK CORPORATIONInventors: Kunihisa Sekiguchi, Yasunari Mizoguchi, Hirohito Teraoka, Hiroshi Suzuki, Katsuki Tsuchiya, Kevin Foster, Jinfeng Jia
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Publication number: 20190006856Abstract: A charging circuit includes a first power source circuit that supplies charging power to secondary batteries; a switch that controls the supply of the power; and a control device that performs switching control of the switch. The control device detects a voltage difference between the secondary batteries before starting charging; starts a timer and starts serial charging of the secondary batteries; on the condition that the voltage difference before the charging has been equal to or larger than a first threshold, if respective voltage values of the secondary batteries have both become equal to or larger than a second threshold before the timer expires, shortens a remaining time on the timer at that time point; and finishes the serial charging of the secondary batteries at the earlier of a time point when the secondary batteries have both become fully charged, or a time point when the timer has expired.Type: ApplicationFiled: January 27, 2017Publication date: January 3, 2019Inventors: Yasunari Mizoguchi, Kazuta Takeno, Kunihisa Sekiguchi, Kenji Kitamura, Takashi Kano
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Patent number: 10027138Abstract: A charger of the present invention includes a charging circuit that allows a secondary battery to be charged, a state-of-charge detection circuit that detects a state of charge of the secondary battery, a pictogram display unit that displays the state of charge of the secondary battery, and a control device that controls the charging circuit and the pictogram display unit on the basis of the state of charge of the secondary battery. The control device determines a kind of electronic apparatus available by the secondary battery in accordance with the state of charge of the secondary battery, and then displays the kind of electronic apparatus available on the pictogram display unit.Type: GrantFiled: March 23, 2016Date of Patent: July 17, 2018Assignee: FDK CORPORATIONInventors: Yasunari Mizoguchi, Hirohito Teraoka, Kunihisa Sekiguchi, Katsuki Tsuchiya, Kevin Foster
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Publication number: 20160359353Abstract: A charger includes: a charging circuit which receives an electric power from external equipment and charges a secondary battery; a control device which determines a power supply capability of the external equipment on the basis of the electric power that is supplied to the charging circuit from the external equipment; and a display device that displays the power supply capability of the external equipment, which has been determined by the control device.Type: ApplicationFiled: May 26, 2016Publication date: December 8, 2016Applicant: FDK CORPORATIONInventors: Kunihisa Sekiguchi, Yasunari Mizoguchi, Hirohito Teraoka, Hiroshi Suzuki, Katsuki Tsuchiya, Kevin Foster, Jinfeng Jia
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Publication number: 20160285285Abstract: A charger of the present invention includes a charging circuit that allows a secondary battery to be charged, a state-of-charge detection circuit that detects a state of charge of the secondary battery, a pictogram display unit that displays the state of charge of the secondary battery, and a control device that controls the charging circuit and the pictogram display unit on the basis of the state of charge of the secondary battery. The control device determines a kind of electronic apparatus available by the secondary battery in accordance with the state of charge of the secondary battery, and then displays the kind of electronic apparatus available on the pictogram display unit.Type: ApplicationFiled: March 23, 2016Publication date: September 29, 2016Applicant: FDK CORPORATIONInventors: Yasunari Mizoguchi, Hirohito Teraoka, Kunihisa Sekiguchi, Katsuki Tsuchiya, Kevin Foster
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Patent number: 8012638Abstract: A fuel cell system according to the invention comprises a fuel cell stack, a fuel feeder that supplies the fuel cell stack with fuel, a rechargeable battery that is an electric storage device, a bidirectional DC/DC converter that selectively performs an operation of converting the output voltage of the rechargeable battery into a predetermined voltage and then outputting it (a discharge operation), or an operation of charging the rechargeable battery using the electric power outputted from the fuel cell stack (a charge operation), and a mode control circuit. The mode control circuit detects the output voltage of the fuel cell stack so that, when it is higher than the set value, the mode control circuit makes the bidirectional DC/DC converter perform the charge operation; when it is not higher than the set value, the mode control circuit makes the bidirectional DC/DC converter perform the discharge operation.Type: GrantFiled: June 30, 2010Date of Patent: September 6, 2011Assignee: Sanyo Electric Co. Ltd.Inventors: Masaaki Konoto, Masaya Fujii, Kazuhiro Seo, Kunihisa Sekiguchi
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Publication number: 20100266919Abstract: A fuel cell system according to the invention comprises a fuel cell stack, a fuel feeder that supplies the fuel cell stack with fuel, a rechargeable battery that is an electric storage device, a bidirectional DC/DC converter that selectively performs an operation of converting the output voltage of the rechargeable battery into a predetermined voltage and then outputting it (a discharge operation), or an operation of charging the rechargeable battery using the electric power outputted from the fuel cell stack (a charge operation), and a mode control circuit. The mode control circuit detects the output voltage of the fuel cell stack so that, when it is higher than the set value, the mode control circuit makes the bidirectional DC/DC converter perform the charge operation; when it is not higher than the set value, the mode control circuit makes the bidirectional DC/DC converter perform the discharge operation.Type: ApplicationFiled: June 30, 2010Publication date: October 21, 2010Applicant: SANYO ELECTRIC CO., LTD.Inventors: Masaaki KONOTO, Masaya Fujii, Kazuhiro Seo, Kunihisa Sekiguchi
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Patent number: 7767353Abstract: A fuel cell system according to the invention comprises a fuel cell stack, a fuel feeder that supplies the fuel cell stack with fuel, a rechargeable battery that is an electric storage device, a bidirectional DC/DC converter that selectively performs an operation of converting the output voltage of the rechargeable battery into a predetermined voltage and then outputting it (a discharge operation), or an operation of charging the rechargeable battery using the electric power outputted from the fuel cell stack (a charge operation), and a mode control circuit. The mode control circuit detects the output voltage of the fuel cell stack so that, when it is higher than the set value, the mode control circuit makes the bidirectional DC/DC converter perform the charge operation; when it is not higher than the set value, the mode control circuit makes the bidirectional DC/DC converter perform the discharge operation.Type: GrantFiled: August 2, 2005Date of Patent: August 3, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Masaaki Konoto, Masaya Fujii, Kazuhiro Seo, Kunihisa Sekiguchi
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Publication number: 20060029846Abstract: A fuel cell system according to the invention comprises a fuel cell stack, a fuel feeder that supplies the fuel cell stack with fuel, a rechargeable battery that is an electric storage device, a bidirectional DC/DC converter that selectively performs an operation of converting the output voltage of the rechargeable battery into a predetermined voltage and then outputting it (a discharge operation), or an operation of charging the rechargeable battery using the electric power outputted from the fuel cell stack (a charge operation), and a mode control circuit. The mode control circuit detects the output voltage of the fuel cell stack so that, when it is higher than the set value, the mode control circuit makes the bidirectional DC/DC converter perform the charge operation; when it is not higher than the set value, the mode control circuit makes the bidirectional DC/DC converter perform the discharge operation.Type: ApplicationFiled: August 2, 2005Publication date: February 9, 2006Inventors: Masaaki Konoto, Masaya Fujii, Kazuhiro Seo, Kunihisa Sekiguchi
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Patent number: D1012017Type: GrantFiled: December 11, 2020Date of Patent: January 23, 2024Assignee: FDK CORPORATIONInventors: Takashi Kanou, Mika Takayanagi, Asuka Takahashi, Yasunari Mizoguchi, Katsuki Tsuchiya, Kenji Kitamura, Kunihisa Sekiguchi, Kazuta Takeno