Patents by Inventor Masaki Uchiyama
Masaki Uchiyama 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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Publication number: 20220080737Abstract: A waste liquid container includes an accommodation chamber including an opening that is open upward of the waste liquid container in a mounted state where the waste liquid container is mounted in the mounting portion, the accommodation chamber being configured to accommodate the liquid, and a contact portion provided at a surface that intersect with a bottom surface and an upper surface of the waste liquid container, the contact portion being configured to contact a horizontal plane and set a posture of the accommodation chamber with respect to the horizontal plane in a placement state where the waste liquid container is placed at the horizontal plane with the surface facing downward, wherein in the placement state, an inner surface is in an inclined state where the bottom surface is lower than the upper surface, the inner surface serving as a lower surface of the accommodation chamber.Type: ApplicationFiled: September 2, 2021Publication date: March 17, 2022Inventors: Masaki UCHIYAMA, Toshio NAKATA
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Patent number: 11251473Abstract: A secondary battery system includes an assembled battery that includes a plurality of blocks that are connected in series to one another. Each of the plurality of the blocks includes same number of cells that are connected in parallel to one another. A control device is configured to calculate an internal resistance ratio and a protection current. The internal resistance ratio is a value obtained by dividing the higher one of internal resistances by the lower one of the internal resistances of two of the plurality of the blocks. The protection current is a value obtained by multiplying the internal resistance ratio by a current value of the assembled battery detected by a current sensor. The control device is configured to perform the charge-discharge control based on the protection current.Type: GrantFiled: November 30, 2018Date of Patent: February 15, 2022Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Kiyohito Machida, Hiroki Tashiro, Yoshihiro Uchida, Nobuyuki Tanaka, Masaki Uchiyama
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Patent number: 11180051Abstract: A vehicle includes a controller and a display. The controller is configured to calculate a capacity retention (a degree of deterioration) based on measurement data of a main battery. The controller estimates an upper limit value and a lower limit value of an error (range) of the calculated capacity retention. The controller calculates a capacity retention range including the upper limit value Wu and the lower limit value. The controller has the display show the calculated capacity retention range.Type: GrantFiled: October 18, 2019Date of Patent: November 23, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuki Kubo, Junta Izumi, Yoshihiro Uchida, Masaki Uchiyama
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Patent number: 10804575Abstract: A battery pack includes a plurality of modules connected in series to one another. Each of the plurality of modules includes a plurality of cells connected in parallel to one another. If a first condition and a second condition are satisfied, an ECU diagnoses an abnormality in which a current path of a cell included in any module breaks. The first condition is a condition that the voltage difference between the maximum voltage and the minimum voltage among a plurality of voltage values is less than a reference value before execution of plug-in charging control, each of the plurality of voltage values being detected by a corresponding one of a plurality of voltage sensors. The second condition is a condition that the voltage difference between the maximum voltage and a voltage is more than or equal to the reference value after execution of the plug-in charging control.Type: GrantFiled: December 20, 2018Date of Patent: October 13, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kiyohito Machida, Yoshihiro Uchida, Masaki Uchiyama
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Patent number: 10790556Abstract: An ECU performs a process including the steps of: acquiring a lowest temperature TBmin and a temperature TC of cooling air; acquiring a fan airflow volume; setting a cooling coefficient; calculating a resistance value Rtmin; calculating a root-mean-square value of a current; setting TBoffset1; calculating a resistance value Rtmax; calculating a temperature index Ftmax; calculating a temperature index Ftmin; calculating an evaluation function ?F; calculating a maximum current correction gain G; and calculating a maximum current value Imax.Type: GrantFiled: January 11, 2019Date of Patent: September 29, 2020Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Kiyohito Machida, Yoshihiro Uchida, Masaki Uchiyama
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Publication number: 20200303787Abstract: A secondary battery system includes an assembled battery that includes a plurality of blocks that are connected in series to one another. Each of the plurality of the blocks includes same number of cells that are connected in parallel to one another. A control device is configured to calculate an internal resistance ratio and a protection current. The internal resistance ratio is a value obtained by dividing the higher one of internal resistances by the lower one of the internal resistances of two of the plurality of the blocks. The protection current is a value obtained by multiplying the internal resistance ratio by a current value of the assembled battery detected by a current sensor. The control device is configured to perform the charge-discharge control based on the protection current.Type: ApplicationFiled: November 30, 2018Publication date: September 24, 2020Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Kiyohito MACHIDA, Hiroki TASHIRO, Yoshihiro UCHIDA, Nobuyuki TANAKA, Masaki UCHIYAMA
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Publication number: 20200256922Abstract: An ECU sets a SOC estimated from an OCV at the time of activating a system of a vehicle as an initial SOC value in the case where the SOC during a stop of the system is higher than a first SOC, which represents the SOC estimated from the OCV at the time of activating the system by using a discharging curve line, or the SOC during the stop of the system is lower than a second SOC, which represents the SOC estimated from the OCV at the time of activating the system by using a charging curve line. The ECU sets the SOC during the stop of the system as the initial SOC value in the case where the SOC during the stop of the system is equal to or lower than the first SOC and is equal to or higher than the second SOC.Type: ApplicationFiled: December 27, 2019Publication date: August 13, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshihiro Uchida, Kiyohito Machida, Yuki Moriya, Nobuyuki Tanaka, Kazuki Kubo, Masaki Uchiyama
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Publication number: 20200259354Abstract: An ECU performs a process routine including a step of acquiring a voltage, a current, and a battery temperature, a step of estimating an SOC, a step of performing a parallel gain calculating process, a step of performing an IWin calculating process, a step of performing DWin/DWout calculating process, a step of performing an NWin/NWout calculating process, and a step of setting Win and Wout.Type: ApplicationFiled: December 23, 2019Publication date: August 13, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshihiro UCHIDA, Kiyohito MACHIDA, Yuki MORIYA, Nobuyuki TANAKA, Kazuki KUBO, Masaki UCHIYAMA
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Publication number: 20200122577Abstract: A vehicle includes a battery that is mounted as a power source in the vehicle and an instrument panel that displays, to a user of the vehicle, an index (a capacity retention ratio Q or an electric vehicle (EV) travelable distance) indicating a larger value as deterioration of the battery progresses less. The instrument panel displays a maximum value of the index until a predetermined condition has been satisfied.Type: ApplicationFiled: September 11, 2019Publication date: April 23, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuki Kubo, Yoshihiro Uchida, Junta Izumi, Masaki Uchiyama
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Publication number: 20200126516Abstract: A display device includes: a display unit configured to display a degradation level of a secondary battery; and a controller configured to calculate the degradation level from measurement data of the secondary battery in every predetermined period and to control the display unit so as to display the degradation level. The controller is configured to, when a first degradation level indicating a newly calculated degradation level is lower than a second degradation level indicating a previously calculated degradation level, correct the first degradation level to a value equal to or higher than the second degradation level and to control the display unit so as to display the corrected degradation level.Type: ApplicationFiled: August 15, 2019Publication date: April 23, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuki Kubo, Junta Izumi, Yoshihiro Uchida, Masaki Uchiyama
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Publication number: 20200122604Abstract: A vehicle includes a controller and a display. The controller is configured to calculate a capacity retention (a degree of deterioration) based on measurement data of a main battery. The controller estimates an upper limit value and a lower limit value of an error (range) of the calculated capacity retention. The controller calculates a capacity retention range including the upper limit value Wu and the lower limit value. The controller has the display show the calculated capacity retention range.Type: ApplicationFiled: October 18, 2019Publication date: April 23, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuki KUBO, Junta IZUMI, Yoshihiro UCHIDA, Masaki UCHIYAMA
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Publication number: 20200122603Abstract: A controller performs processing including estimating a current degree of deterioration based on battery use history data when it is determined that deterioration diagnosis timing has come, setting a deterioration curve, setting a deterioration straight line, obtaining an elapsed time, obtaining a capacity retention based on the elapsed time and the deterioration straight line, updating representation of the capacity retention on an output unit, and showing an initial value as the capacity retention when it is determined that the deterioration straight line has not been set.Type: ApplicationFiled: October 18, 2019Publication date: April 23, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuki KUBO, Yoshihiro UCHIDA, Junta IZUMI, Masaki UCHIYAMA
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Publication number: 20200122602Abstract: A display device includes: a display unit configured to display an index corresponding to a deterioration state of a secondary battery and an EV travelable distance; and a control unit configured to control display of the display unit such that a first decreasing amount by which the EV travelable distance displayed on the display unit decreases with the elapse of time until a predetermined condition has been satisfied is less than a second decreasing amount by which the EV travelable distance displayed on the display unit decreases with the elapse of time after the predetermined condition has been satisfied.Type: ApplicationFiled: September 13, 2019Publication date: April 23, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuki KUBO, Junta Izumi, Yoshihiro Uchida, Masaki Uchiyama
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Publication number: 20200127343Abstract: A vehicle includes a secondary battery and a display device. The secondary battery is mounted on the vehicle as a power source. The display device is configured to display an indicator that indicates a capacity retention rate of the secondary battery at a current point in time. The capacity retention rate is a ratio of a capacity of the secondary battery at the current point in time to a reference capacity of the secondary battery. The reference capacity is set in advance based on a virtual capacity of the secondary battery after a lapse of a predetermined period from manufacture of the vehicle.Type: ApplicationFiled: August 5, 2019Publication date: April 23, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuki KUBO, Yoshihiro UCHIDA, Junta IZUMI, Masaki UCHIYAMA
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Patent number: 10553859Abstract: An electrode active material for a nonaqueous electrolyte secondary battery includes: a core part including at least one of an inorganic oxide and a carbon-composite inorganic composite oxide; and a shell part for carbon coating on the core part. The electrode active material has a specific surface area of 6.0 m2/g or more. The electrode active material has a moisture content of 400 ppm or less, which is measured by a Karl Fischer method such that the electrode active material is heated in a heat-evaporating manner, and continuously maintained at 250° C. for 40 minutes without exposing to an atmosphere after the electrode active material is exposed to the atmosphere to absorb moisture to be saturated.Type: GrantFiled: April 20, 2016Date of Patent: February 4, 2020Assignee: DENSO CORPORATIONInventors: Shuhei Yoshida, Koji Ohira, Masaki Uchiyama, Daisuke Shibata
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Patent number: 10374269Abstract: A battery pack includes a plurality of battery stacks integrated by stacking a plurality of unit batteries, a fluid passage where fluid flows for cooling the unit batteries disposed between the battery stacks, a blower for circulating the fluid in the fluid passage, and a plurality of heat conducting plates. The heat conducting plate is thermally connected to an outer casing of the unit batteries constituting the battery stacks adjacent to each other, and disposed so as to constitute a plurality of cooled portions of which parts thereof exist in the fluid passage. The battery pack includes a passage forming member that demarcates the fluid passage as an independent passage from the area near the outer casing of the unit battery, and includes a partition wall for supporting the heat conducting plate.Type: GrantFiled: July 10, 2015Date of Patent: August 6, 2019Assignee: DENSO CORPORATIONInventors: Masaki Uchiyama, Ryuichiro Shinkai, Yoshimitsu Inoue, Takahiro Souki, Kouhei Yamamoto, Kouhei Yamaguchi, Tetsuya Goto
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Publication number: 20190221898Abstract: An ECU performs a process including the steps of: acquiring a lowest temperature TBmin and a temperature TC of cooling air; acquiring a fan airflow volume; setting a cooling coefficient; calculating a resistance value Rtmin; calculating a root-mean-square value of a current; setting TBoffset1; calculating a resistance value Rtmax; calculating a temperature index Ftmax; calculating a temperature index Ftmin; calculating an evaluation function ?F; calculating a maximum current correction gain G; and calculating a maximum current value Imax.Type: ApplicationFiled: January 11, 2019Publication date: July 18, 2019Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Kiyohito MACHIDA, Yoshihiro UCHIDA, Masaki UCHIYAMA
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Publication number: 20190198945Abstract: A battery pack includes a plurality of modules connected in series to one another. Each of the plurality of modules includes a plurality of cells connected in parallel to one another. If a first condition and a second condition are satisfied, an ECU diagnoses an abnormality in which a current path of a cell included in any module breaks. The first condition is a condition that the voltage difference between the maximum voltage and the minimum voltage among a plurality of voltage values is less than a reference value before execution of plug-in charging control, each of the plurality of voltage values being detected by a corresponding one of a plurality of voltage sensors. The second condition is a condition that the voltage difference between the maximum voltage and a voltage is more than or equal to the reference value after execution of the plug-in charging control.Type: ApplicationFiled: December 20, 2018Publication date: June 27, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kiyohito MACHIDA, Yoshihiro UCHIDA, Masaki UCHIYAMA
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Patent number: 9882406Abstract: A lithium-ion battery includes a cathode active material of the Olivine-type crystal structure. The lithium-ion battery is charged under control of a charging control apparatus, which performs a charging process for charging up to a target voltage according to a constant-current and constant-voltage charging method, a negative-electrode potential evaluation process for evaluating a potential change quantity at the negative-electrode, and a voltage setting process for setting the target voltage to a lower voltage based on the potential change quantity of the negative-electrode evaluated by the negative-electrode potential evaluation process. The charging voltage is changed from the target voltage to the set voltage even when the negative-electrode potential changes with an increase in the number of charging and aging deterioration. Thus a positive-electrode potential is suppressed from rising because of less susceptibility to the increase in number of charging and aging deterioration.Type: GrantFiled: August 18, 2015Date of Patent: January 30, 2018Assignee: DENSO CORPORATIONInventors: Yoshinori Satou, Masaki Uchiyama, Nobuo Yamamoto, Koji Ohira
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Patent number: 9505213Abstract: An ink jet recorder includes a support unit configured to support a recording medium, and a mobile unit including a plurality of containers containing inks of identical composition and a head configured to eject the ink supplied from any one of the plurality of containers. The ink jet recorder is configured to record an image on the recording medium in such a manner that the head performs main scanning by ejecting the ink while changing positions in a first direction, and the mobile unit performs sub-scanning by moving in a second direction intersecting with the first direction.Type: GrantFiled: September 1, 2015Date of Patent: November 29, 2016Assignee: Seiko Epson CorporationInventors: Keita Ichihara, Atsushi Yoshida, Masaki Uchiyama, Hiroyuki Ito, Mitsuaki Yoshizawa