Patents by Inventor Hiroyuki Kawaki
Hiroyuki Kawaki 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: 9406967Abstract: Provided is a method for producing a lithium secondary cell with which the concentrated precipitation of metal impurities at the negative electrode is inhibited and short circuiting is unlikely to occur. The production method includes, assembling together the positive electrode, the separator, and the negative electrode, and then impregnating the assembly with the nonaqueous electrolyte; charging the assembly within 1 min so that a maximum achieved potential of the positive electrode becomes 3.2 V or more with respect to the redox potential of lithium; allowing the assembly to stand for 10 min or less after the charging has ended; and discharging the assembly within 1 min after the standing step.Type: GrantFiled: December 17, 2010Date of Patent: August 2, 2016Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hisataka Fujimaki, Katsuyuki Hojo, Tomotaka Hagino, Hiroyuki Kawaki, Shinya Kamada, Hisanao Kojima
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Patent number: 8826739Abstract: In an ultrasonic measuring method for measuring the thickness of a coating material applied by coating to one surface or both surfaces of a substrate made of a metal so as to provide a coated product, a pair of first ultrasonic sensor and second ultrasonic sensor are provided such that the first ultrasonic sensor is placed on one side of the coated product, as viewed in its thickness direction, via an air layer, while the second ultrasonic sensor is placed on the other side of the coated product, via an air layer, and the thickness of the coating material is measured by transmitting ultrasonic waves between the first and the second ultrasonic sensors. A flat-type transmitting sensor that permits propagation of unfocused ultrasonic waves is used as the first ultrasonic sensor, and a flat-type receiving sensor that permits propagation of unfocused ultrasonic waves is used as the second ultrasonic sensor.Type: GrantFiled: January 24, 2012Date of Patent: September 9, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Seiichi Matsumoto, Hiroyuki Kawaki, Shinya Kuroki, Kazuhiro Uchida, Kiyokazu Ito
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Patent number: 8813570Abstract: An ultrasonic measuring method and an ultrasonic measuring system use or include at least one actual-measurement ultrasonic sensor set each consisting of a first ultrasonic sensor and a second ultrasonic sensor, for measuring the basis weight of an electrode paste, and a calibration ultrasonic sensor set consisting of a pair of first calibration ultrasonic sensor and second calibration ultrasonic sensor. The calibration ultrasonic sensor set performs calibration during measurement of the thickness of the electrode paste, and the actual-measurement ultrasonic sensor set calculates the basis weight of the electrode paste, using a measurement condition value obtained by the calibration ultrasonic sensor set.Type: GrantFiled: March 27, 2012Date of Patent: August 26, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Seiichi Matsumoto, Hiroyuki Kawaki, Shinya Kuroki, Kazuhiro Uchida
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Patent number: 8813552Abstract: The objective of the present invention is to provide an unexpected detecting apparatus enabled to evaluate an evenness of a compound coated on an electrode of a battery. The detecting apparatus (1) detects an evenness of a compound (12) coated on an electrode (10) of a battery, and includes a first sensor (20) for measuring a mass per unit area of the compound (12) in any points thereof, a second sensor (30, 50) for measuring a thickness of the compound (12) in the any points, and a holder (40, 60) for holding the first and second sensors (20, 30, 50), in which the first and second sensors (20, 30, 50) measure the mass and thickness at the same time, and the evenness is evaluated on the basis of the measured mass and thickness.Type: GrantFiled: August 3, 2009Date of Patent: August 26, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Seiichi Matsumoto, Hiroyuki Kawaki, Shinya Kamada, Yasunori Toyoshima, Masayuki Kitamura, Takahiro Makihara
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Publication number: 20130255075Abstract: Provided is a method for producing a lithium secondary cell with which the concentrated precipitation of metal impurities at the negative electrode is inhibited and short circuiting is unlikely to occur. The production method includes, assembling together the positive electrode, the separator, and the negative electrode, and then impregnating the assembly with the nonaqueous electrolyte; charging the assembly within 1 min so that a maximum achieved potential of the positive electrode becomes 3.2 V or more with respect to the redox potential of lithium; allowing the assembly to stand for 10 min or less after the charging has ended; and discharging the assembly within 1 min after the standing step.Type: ApplicationFiled: December 17, 2010Publication date: October 3, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hisataka Fujimaki, Katsuyuki Hojo, Tomotaka Hagino, HIroyuki Kawaki, Shinya Kamada, Hisanao Kojima
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Publication number: 20120247211Abstract: An ultrasonic measuring method and an ultrasonic measuring system use or include at least one actual-measurement ultrasonic sensor set each consisting of a first ultrasonic sensor and a second ultrasonic sensor, for measuring the basis weight of an electrode paste, and a calibration ultrasonic sensor set consisting of a pair of first calibration ultrasonic sensor and second calibration ultrasonic sensor. The calibration ultrasonic sensor set performs calibration during measurement of the thickness of the electrode paste, and the actual-measurement ultrasonic sensor set calculates the basis weight of the electrode paste, using a measurement condition value obtained by the calibration ultrasonic sensor set.Type: ApplicationFiled: March 27, 2012Publication date: October 4, 2012Inventors: Seiichi MATSUMOTO, Hiroyuki KAWAKI, Shinya KUROKI, Kazuhiro UCHIDA
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Publication number: 20120186348Abstract: In an ultrasonic measuring method for measuring the thickness of a coating material applied by coating to one surface or both surfaces of a substrate made of a metal so as to provide a coated product, a pair of first ultrasonic sensor and second ultrasonic sensor are provided such that the first ultrasonic sensor is placed on one side of the coated product, as viewed in its thickness direction, via an air layer, while the second ultrasonic sensor is placed on the other side of the coated product, via an air layer, and the thickness of the coating material is measured by transmitting ultrasonic waves between the first and the second ultrasonic sensors. A flat-type transmitting sensor that permits propagation of unfocused ultrasonic waves is used as the first ultrasonic sensor, and a flat-type receiving sensor that permits propagation of unfocused ultrasonic waves is used as the second ultrasonic sensor.Type: ApplicationFiled: January 24, 2012Publication date: July 26, 2012Inventors: Seiichi MATSUMOTO, Hiroyuki Kawaki, Shinya Kuroki, Kazuhiro Uchida, Kiyokazu Ito
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Publication number: 20120111103Abstract: The objective of the present invention is to provide an unexpected detecting apparatus enabled to evaluate an evenness of a compound coated on an electrode of a battery. The detecting apparatus (1) detects an evenness of a compound (12) coated on an electrode (10) of a battery, and includes a first sensor (20) for measuring a mass per unit area of the compound (12) in any points thereof, a second sensor (30, 50) for measuring a thickness of the compound (12) in the any points, and a holder (40, 60) for holding the first and second sensors (20, 30, 50), in which the first and second sensors (20, 30, 50) measure the mass and thickness at the same time, and the evenness is evaluated on the basis of the measured mass and thickness.Type: ApplicationFiled: August 3, 2009Publication date: May 10, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Seiichi Matsumoto, Hiroyuki Kawaki, Shinya Kamada, Yasunori Toyoshima, Masayuki Kitamura, Takahiro Makihara