Patents by Inventor Katsuyoshi MURAMATSU
Katsuyoshi MURAMATSU 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: 11948740Abstract: To provide an electrode for an electricity storage device, which electrode employs a porous conductor having conductive nanostructures formed on its surface and makes it possible to provide a less expensive electricity storage device having a high discharge capacity and high charge/discharge cycle resistance. A porous conductor which is used as an electrode for an electricity storage device has a plurality of conductive nanostructures on a surface of the porous conductor.Type: GrantFiled: September 19, 2018Date of Patent: April 2, 2024Assignees: National University Corporation Chiba University, TOMOEGAWA CORPORATIONInventors: Katsuyoshi Hoshino, Yousuke Sugawara, Rio Yamada, Aoi Magori, Nobuyuki Aoki, Keiichiro Haji, Daisuke Muramatsu
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Patent number: 11075414Abstract: A battery cooling control device includes a power storage device management portion that detects a temperature of a power storage device, an electronic control portion that changes over a traveling mode of a vehicle between an EV traveling mode and an HEV traveling mode, and based on a detection result of the power storage device management portion, outputs a cooling start instruction and a cooling stop instruction, and a cooling system that starts cooling the power storage device in response to a receiving of the cooling start instruction and stop cooling the power storage device in response to a receiving of the cooling stop instruction. The electronic control portion changes set values of the cooling start temperature and the cooling stop temperature in accordance with whether the traveling mode is the EV traveling mode or the HEV traveling mode.Type: GrantFiled: August 26, 2019Date of Patent: July 27, 2021Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Hokuto Yokotsuji, Katsuyoshi Muramatsu
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Publication number: 20200067151Abstract: A battery cooling control device includes a power storage device management portion that detects a temperature of a power storage device, an electronic control portion that changes over a traveling mode of a vehicle between an EV traveling mode and an HEV traveling mode, and based on a detection result of the power storage device management portion, outputs a cooling start instruction and a cooling stop instruction, and a cooling system that starts cooling the power storage device in response to a receiving of the cooling start instruction and stop cooling the power storage device in response to a receiving of the cooling stop instruction. The electronic control portion changes set values of the cooling start temperature and the cooling stop temperature in accordance with whether the traveling mode is the EV traveling mode or the HEV traveling mode.Type: ApplicationFiled: August 26, 2019Publication date: February 27, 2020Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Hokuto YOKOTSUJI, Katsuyoshi MURAMATSU
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Patent number: 9981567Abstract: A battery controller that controls a battery for supplying power to a load apparatus, includes a current detection unit that detects a discharge current and a charge current of the battery, a malfunction detection unit that detects malfunction of a voltage detector for detecting a voltage of the battery, and a contactor control unit that is provided on a power supply line through which the discharge current and the charge current flow to open/close a contactor. The contactor control unit integrates the charge and discharge current when the malfunction of the voltage detector is detected, calculates an actual charge current amount obtained by subtracting an integrated value of the discharge current from an integrated value of the charge current, and prohibits charging/discharging of the battery by controlling the contactor when the actual charge current amount is equal to or more than a predetermined value.Type: GrantFiled: October 6, 2016Date of Patent: May 29, 2018Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Shohei Kawano, Toshifumi Mizui, Yoshifumi Nobori, Atsushi Kodama, Naoto Tagaya, Katsuyoshi Muramatsu
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Publication number: 20170101029Abstract: A battery controller that controls a battery for supplying power to a load apparatus, includes a current detection unit that detects a discharge current and a charge current of the battery, a malfunction detection unit that detects malfunction of a voltage detector for detecting a voltage of the battery, and a contactor control unit that is provided on a power supply line through which the discharge current and the charge current flow to open/close a contactor. The contactor control unit integrates the charge and discharge current when the malfunction of the voltage detector is detected, calculates an actual charge current amount obtained by subtracting an integrated value of the discharge current from an integrated value of the charge current, and prohibits charging/discharging of the battery by controlling the contactor when the actual charge current amount is equal to or more than a predetermined value.Type: ApplicationFiled: October 6, 2016Publication date: April 13, 2017Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Shohei KAWANO, Toshifumi MIZUI, Yoshifumi NOBORI, Atsushi KODAMA, Naoto TAGAYA, Katsuyoshi MURAMATSU
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Patent number: 9278622Abstract: The battery management unit for a vehicle includes a charger mounted on the vehicle, configured to connect to an external power source and charge an assembled battery including a plurality of cells with electric power from the external power source; a memory that records which cell is a lowest cell having the lowest voltage when the battery is fully charged; and a cell-balancer that carries out cell-balancing on the voltage of the battery by discharging, when the charger is not charging the battery, the cells having a voltage higher than a current voltage of the lowest cell to the current value of the lowest cell. Thereby, it is possible to suppress an increase in dispersion of voltages and reduction in battery capacity.Type: GrantFiled: July 9, 2013Date of Patent: March 8, 2016Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Naoto Tagaya, Katsuyoshi Muramatsu
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Publication number: 20140015483Abstract: The battery management unit for a vehicle includes a charger mounted on the vehicle, configured to connect to an external power source and charge an assembled battery including a plurality of cells with electric power from the external power source; a memory that records which cell is a lowest cell having the lowest voltage when the battery is fully charged; and a cell-balancer that carries out cell-balancing on the voltage of the battery by discharging, when the charger is not charging the battery, the cells having a voltage higher than a current voltage of the lowest cell to the current value of the lowest cell. Thereby, it is possible to suppress an increase in dispersion of voltages and reduction in battery capacity.Type: ApplicationFiled: July 9, 2013Publication date: January 16, 2014Inventors: Naoto TAGAYA, Katsuyoshi MURAMATSU