Patents by Inventor Kazuya Kodama
Kazuya Kodama 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: 11380941Abstract: A battery information processing system includes a control device configured to perform capacity calculation processing. The capacity calculation processing is processing for calculating a full charge capacity Q of the module based on a fitting curve Z calculated by fitting processing of a Nyquist plot representing a result of measurement of an AC impedance of the module. In an OCV-SOC curve of the module, there are a flat region in which a ratio of variation is lower than a reference value and a steep region in which the ratio of variation is higher than the reference value. The control device estimates an OCV of the module from a result of detection by a voltage sensor and performs the capacity calculation processing when the estimated OCV is in the flat region.Type: GrantFiled: April 8, 2019Date of Patent: July 5, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Kazuya Kodama
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Patent number: 11215671Abstract: A battery information processing system includes a storage device configured to store an equivalent circuit model which expresses an AC impedance of a battery module with a plurality of circuit constants. The plurality of circuit constants include first to eighth circuit constants. The first circuit constant is a junction inductance. The second circuit constant is a junction resistance. The third circuit constant is a solution resistance and the fourth circuit constant is a charge transfer resistance. The fifth circuit constant is a CPE index of a diffusion resistance. The sixth circuit constant is a CPE constant of the diffusion resistance. The seventh circuit constant is a CPE index of an electric double layer capacitance. The eighth circuit constant is a CPE constant of the electric double layer capacitance.Type: GrantFiled: April 24, 2019Date of Patent: January 4, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuya Kodama, Masahiko Mitsui
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Patent number: 11175344Abstract: A battery information processing system includes a storage device configured to store an equivalent circuit model which expresses an AC impedance of a battery module with a plurality of circuit constants. The plurality of circuit constants include first to eighth circuit constants. The first circuit constant is a junction inductance. The second circuit constant is a junction resistance. The third circuit constant is a solution resistance and the fourth circuit constant is a charge transfer resistance. The fifth circuit constant is a CPE index of a diffusion resistance. The sixth circuit constant is a CPE constant of the diffusion resistance. The seventh circuit constant is a CPE index of an electric double layer capacitance. The eighth circuit constant is a CPE constant of the electric double layer capacitance.Type: GrantFiled: April 24, 2019Date of Patent: November 16, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuya Kodama, Masahiko Mitsui
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Patent number: 10976374Abstract: A battery information processing system includes an analyzer configured to analyze a result of measurement of an AC impedance of a module M. The analyzer plots the result of measurement of the AC impedance on a first frequency characteristic diagram which is a Bode diagram (a first diagram) relating to a real number component of the AC impedance and on a second frequency characteristic diagram which is a Bode diagram (a second diagram) relating to an imaginary number component of the AC impedance, obtains a polynomial curve L1 by fitting processing onto a result of plotting on the first diagram and obtains a polynomial curve L2 by fitting processing onto a result of plotting on the second diagram, and converts the polynomial curves L1 and L2 into an impedance curve Z on a Nyquist diagram.Type: GrantFiled: April 24, 2019Date of Patent: April 13, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Kazuya Kodama
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Patent number: 10923781Abstract: A recovering device includes a charging chamber configured to overcharge a nickel-metal hydride battery. The charging chamber is provided with: a first water bath; a fixing device configured to fix the nickel-metal hydride battery with a portion of a container of the nickel-metal hydride battery being immersed in the water coolant in the first water bath; a pump; a dial gauge configured to detect a deformation amount of the container of the nickel-metal hydride battery; and a collection container configured to collect the gas exhausted from the exhaust valve of the nickel-metal hydride battery and exhaust the gas to outside the recovering device. The recovering device further includes a controller configured to perform the overcharging process for the nickel-metal hydride battery. The controller is configured to halt the overcharging process when the deformation amount of the container exceeds a threshold value.Type: GrantFiled: December 18, 2018Date of Patent: February 16, 2021Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masahiko Mitsui, Junta Izumi, Kazuya Kodama, Kenji Kimura
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Patent number: 10608627Abstract: An apparatus for driving an inductive load, includes a switching element provided in a current flowing path of the inductive load, a diode connected to the inductive load in parallel, a current detecting resistor detecting current flowing through the inductive load, a peak hold circuit holding voltage detected by the current detecting resistor when the switching element is on, when the switching element is off, and a control section controlling current flowing through the inductive load by turning on/off of the switching element at a duty ratio in response to a target current value while the control section performs feedback control of output of the peak hold circuit. The control section controls current that flows through the inductive load when the duty ratio is larger than a threshold value and controls voltage that applies to the inductive load when the duty ratio is smaller than the threshold value.Type: GrantFiled: November 15, 2018Date of Patent: March 31, 2020Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Kazuya Kodama
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Patent number: 10605871Abstract: A method for determining a state of a rechargeable battery includes obtaining a complex impedance measured by applying AC voltage or AC current to a rechargeable battery that is subject to determination and determining a state of the rechargeable battery based on the obtained complex impedance. The determining a state of the rechargeable battery includes determining whether or not a first capacity shift is occurring based on a comparison of a value of the complex impedance at a predetermined frequency with a first determination value used to determine a negative electrode capacity shift, and when determined that the first capacity shift is not occurring, determining whether or not a second capacity shift is occurring based on a comparison of a gradient of the complex impedance with respect to a real axis in a diffusion resistance region with a second determination value used to determine a positive electrode capacity shift.Type: GrantFiled: September 6, 2018Date of Patent: March 31, 2020Assignees: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroshi Matsuno, Shinichiro Ito, Yasushi Nakagiri, Daisuke Koba, Tamotsu Fukuma, Junta Izumi, Kazuya Kodama, Masahiko Mitsui
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Patent number: 10466306Abstract: (A) A used battery pack is prepared. (B) By disassembling the used battery pack, a cell etc. is collected from the used battery pack. The cell etc. are a nickel-metal hydride battery. (C) A state of charge of the collected cell etc. is adjusted to a state of charge within any of a first SOC range (0 to 3%), a second SOC range (3 to 20%), and a third SOC range (100 to 200%). (G) An amount of voltage lowering as a result of the cell etc. being left is calculated. (H) When the amount of voltage lowering is equal to or smaller than a reference value set in advance, the cell etc. is determined as a good product. (I) A battery pack including the cell etc. determined as the good product is manufactured.Type: GrantFiled: July 20, 2017Date of Patent: November 5, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuya Kodama, Masahiko Mitsui, Junta Izumi
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Publication number: 20190334213Abstract: A battery information processing system includes a control device configured to perform capacity calculation processing. The capacity calculation processing is processing for calculating a full charge capacity Q of the module based on a fitting curve Z calculated by fitting processing of a Nyquist plot representing a result of measurement of an AC impedance of the module. In an OCV-SOC curve of the module, there are a flat region in which a ratio of variation is lower than a reference value and a steep region in which the ratio of variation is higher than the reference value. The control device estimates an OCV of the module from a result of detection by a voltage sensor and performs the capacity calculation processing when the estimated OCV is in the flat region.Type: ApplicationFiled: April 8, 2019Publication date: October 31, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Kazuya KODAMA
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Publication number: 20190331737Abstract: A battery information processing system includes a storage device configured to store an equivalent circuit model which expresses an AC impedance of a battery module with a plurality of circuit constants. The plurality of circuit constants include first to eighth circuit constants. The first circuit constant is a junction inductance. The second circuit constant is a junction resistance. The third circuit constant is a solution resistance and the fourth circuit constant is a charge transfer resistance. The fifth circuit constant is a CPE index of a diffusion resistance. The sixth circuit constant is a CPE constant of the diffusion resistance. The seventh circuit constant is a CPE index of an electric double layer capacitance. The eighth circuit constant is a CPE constant of the electric double layer capacitance.Type: ApplicationFiled: April 24, 2019Publication date: October 31, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuya KODAMA, Masahiko Mitsui
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Publication number: 20190331738Abstract: A battery information processing system includes an analyzer configured to analyze a result of measurement of an AC impedance of a module M. The analyzer plots the result of measurement of the AC impedance on a first frequency characteristic diagram which is a Bode diagram (a first diagram) relating to a real number component of the AC impedance and on a second frequency characteristic diagram which is a Bode diagram (a second diagram) relating to an imaginary number component of the AC impedance, obtains a polynomial curve L1 by fitting processing onto a result of plotting on the first diagram and obtains a polynomial curve L2 by fitting processing onto a result of plotting on the second diagram, and converts the polynomial curves L1 and L2 into an impedance curve Z on a Nyquist diagram.Type: ApplicationFiled: April 24, 2019Publication date: October 31, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Kazuya KODAMA
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Patent number: 10419698Abstract: An image processing method, includes: an input step in which a computer acquires data of a plurality of input images acquired by imaging performed using a same image sensor; and an optimization process step in which a computer determines an optimal solution of brightness change with respect to each input image by performing iterative calculations using an iterative method to improve overall image quality of the plurality of input images. In the optimization process step, an optimal solution of brightness change for each pixel of each input image is determined under a condition that common brightness change is performed with respect to pixels at a same position in respective input images.Type: GrantFiled: October 28, 2016Date of Patent: September 17, 2019Assignee: Canon Kabushiki KaishaInventors: Tomochika Murakami, Kazuya Kodama
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Patent number: 10417746Abstract: An image processing method includes the steps of: generating, based on data of a plurality of images acquired by performing imaging using a same image sensor, a weight coefficient corresponding to each image so that a weight coefficient corresponding to an image of which a brightness change is smooth is relatively large; integrating the data of the plurality of images using the weight coefficients to generate data of an integrated image; applying smoothing to the data of the integrated image to generate data of a smoothed integrated image; and generating, based on the data of the integrated image and the data of the smoothed integrated image, data of estimated fixed-pattern noise which is an estimated value of fixed-pattern noise attributable to the image sensor.Type: GrantFiled: November 17, 2016Date of Patent: September 17, 2019Assignee: Canon Kabushiki KaishaInventors: Tomochika Murakami, Kazuya Kodama
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Publication number: 20190198949Abstract: A recovering device includes a charging chamber configured to overcharge a nickel-metal hydride battery. The charging chamber is provided with: a first water bath; a fixing device configured to fix the nickel-metal hydride battery with a portion of a container of the nickel-metal hydride battery being immersed in the water coolant in the first water bath; a pump; a dial gauge configured to detect a deformation amount of the container of the nickel-metal hydride battery; and a collection container configured to collect the gas exhausted from the exhaust valve of the nickel-metal hydride battery and exhaust the gas to outside the recovering device. The recovering device further includes a controller configured to perform the overcharging process for the nickel-metal hydride battery. The controller is configured to halt the overcharging process when the deformation amount of the container exceeds a threshold value.Type: ApplicationFiled: December 18, 2018Publication date: June 27, 2019Inventors: Masahiko Mitsui, Junta Izumi, Kazuya Kodama, Kenji Kimura
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Publication number: 20190165777Abstract: An apparatus for driving an inductive load, includes a switching element provided in a current flowing path of the inductive load, a diode connected to the inductive load in parallel, a current detecting resistor detecting current flowing through the inductive load, a peak hold circuit holding voltage detected by the current detecting resistor when the switching element is on, when the switching element is off, and a control section controlling current flowing through the inductive load by turning on/off of the switching element at a duty ratio in response to a target current value while the control section performs feedback control of output of the peak hold circuit. The control section controls current that flows through the inductive load when the duty ratio is larger than a threshold value and controls voltage that applies to the inductive load when the duty ratio is smaller than the threshold value.Type: ApplicationFiled: November 15, 2018Publication date: May 30, 2019Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Kazuya KODAMA
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Publication number: 20190079140Abstract: A method for determining a state of a rechargeable battery includes obtaining a complex impedance measured by applying AC voltage or AC current to a rechargeable battery that is subject to determination and determining a state of the rechargeable battery based on the obtained complex impedance. The determining a state of the rechargeable battery includes determining whether or not a first capacity shift is occurring based on a comparison of a value of the complex impedance at a predetermined frequency with a first determination value used to determine a negative electrode capacity shift, and when determined that the first capacity shift is not occurring, determining whether or not a second capacity shift is occurring based on a comparison of a gradient of the complex impedance with respect to a real axis in a diffusion resistance region with a second determination value used to determine a positive electrode capacity shift.Type: ApplicationFiled: September 6, 2018Publication date: March 14, 2019Applicants: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroshi MATSUNO, Shinichiro ITO, Yasushi NAKAGIRI, Daisuke KOBA, Tamotsu FUKUMA, Junta IZUMI, Kazuya KODAMA, Masahiko MITSUI
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Patent number: 10129466Abstract: An image generating apparatus includes: an input unit that inputs data on a defocused image group; a storage unit that stores data on a plurality of filters generated based on a three-dimensional blur function; and a computing unit that generates a new image by applying the filter to the defocused image group. When a first element of a first filter out of the plurality of filters is symmetrical or anti-symmetrical with a second element included in the first filter or a second filter, which is different from the first filter, the storage unit does not store the data on the first element, and the computing unit generates the data on the first element of the first filter based on data on the second element which is stored in the storage unit when the first filter is used.Type: GrantFiled: June 28, 2016Date of Patent: November 13, 2018Assignee: Canon Kabushiki KaishaInventors: Masanori Sato, Kazuya Kodama
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Patent number: 9963483Abstract: An object of the present invention is to provide a process capable of producing a self-assembling peptide derivative that is useful in the fields of regenerative medicine and surgery in large quantities and in an economical and efficient manner. In particular, provided is a production process employing a combination of (i) a step of convergently constructing a sequence with use of a common repeating unit consisting of a specific amino acid sequence and (ii) a step of first isolating the peptide derivative as a disulfuric acid salt, a tetramethanesulfonic acid salt or a tetra(trifluoroacetic acid (TFA) salt), and then subjecting the peptide salt to a salt exchange reaction to yield a tetrahydrochloric acid salt.Type: GrantFiled: July 12, 2013Date of Patent: May 8, 2018Assignee: MENICON CO., LTD.Inventors: Hidenori Yokoi, Yasuhiro Yokoyama, Keisuke Matsuyama, Kenichiro Yamamoto, Kinsei Anzai, Daisuke Nakamura, Toyohiro Nagano, Kazuya Kodama
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Publication number: 20180045785Abstract: (A) A used battery pack is prepared. (B) By disassembling the used battery pack, a cell etc. is collected from the used battery pack. The cell etc. are a nickel-metal hydride battery. (C) A state of charge of the collected cell etc. is adjusted to a state of charge within any of a first SOC range (0 to 3%), a second SOC range (3 to 20%), and a third SOC range (100 to 200%). (G) An amount of voltage lowering as a result of the cell etc. being left is calculated. (H) When the amount of voltage lowering is equal to or smaller than a reference value set in advance, the cell etc. is determined as a good product. (I) A battery pack including the cell etc. determined as the good product is manufactured.Type: ApplicationFiled: July 20, 2017Publication date: February 15, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuya KODAMA, Masahiko MITSUI, Junta IZUMI
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Publication number: 20170154409Abstract: An image processing method includes the steps of: generating, based on data of a plurality of images acquired by performing imaging using a same image sensor, a weight coefficient corresponding to each image so that a weight coefficient corresponding to an image of which a brightness change is smooth is relatively large; integrating the data of the plurality of images using the weight coefficients to generate data of an integrated image; applying smoothing to the data of the integrated image to generate data of a smoothed integrated image; and generating, based on the data of the integrated image and the data of the smoothed integrated image, data of estimated fixed-pattern noise which is an estimated value of fixed-pattern noise attributable to the image sensor.Type: ApplicationFiled: November 17, 2016Publication date: June 1, 2017Inventors: Tomochika Murakami, Kazuya Kodama