Patents by Inventor Kazuo Tojima

Kazuo Tojima 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).

  • Patent number: 10380607
    Abstract: Provided is a server device (101) including: a transmitting/receiving section (201) for receiving, from a household electric appliance (102), an identifier for identifying the household electric appliance (102) and an operation status of the household electric appliance (102); an updating section (207) for estimating a consumption status of a consumer good using the received operation status so as to update the consumption status of the consumer good stored in a utilization information accumulating section (205) based on the estimated consumption status of the consumer good; and a determination section (206) for deciding whether or not to transmit a confirmation message for confirming the consumer good being used with the household electric appliance, based on the updated consumption status of the consumer good.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: August 13, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Toshihisa Nakano, Masayuki Kozuka, Motoji Ohmori, Takako Hirose, Tsuyoshi Sakata, Yoshiyuki Miyabe, Kazuo Okamura, Masayoshi Tojima
  • Patent number: 10158150
    Abstract: An assembled battery reusing system for reusing an assembled battery including a plurality of single cells is provided. The rebuild candidate determining unit (430) determines based on the information about the assembled battery whether a retrieved assembled battery is a rebuild candidate, and the information is acquired by the assembled battery information acquisition unit (i.e. communication unit) (420). The single cell amount determining unit (440) determines an amount of rebuilding-usable single cells included in the rebuild-candidate assembled battery determined by the rebuild candidate determining unit (430). The assembled battery demand information acquisition unit (460) acquires an amount of rebuilding-required single cells required to rebuild a required new assembled battery.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: December 18, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhide Kurimoto, Kazuo Tojima
  • Publication number: 20160248130
    Abstract: An assembled battery reusing system for reusing an assembled battery including a plurality of single cells is provided. The rebuild candidate determining unit (430) determines based on the information about the assembled battery whether a retrieved assembled battery is a rebuild candidate, and the information is acquired by the assembled battery information acquisition unit (i.e. communication unit) (420). The single cell amount determining unit (440) determines an amount of rebuilding-usable single cells included in the rebuild-candidate assembled battery determined by the rebuild candidate determining unit (430). The assembled battery demand information acquisition unit (460) acquires an amount of rebuilding-required single cells required to rebuild a required new assembled battery.
    Type: Application
    Filed: September 24, 2014
    Publication date: August 25, 2016
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasuhide KURIMOTO, Kazuo TOJIMA
  • Patent number: 9035791
    Abstract: A data collection system that collects information indicating a status of a battery mounted on a vehicle from the vehicle after shipment from a factory, includes a battery information collection server that is configured to periodically receive information of the battery and identification information, with which it is possible to identify the vehicle, that are transmitted wirelessly from a computer that is mounted on the vehicle and is configured to acquire and store the information of the battery mounted on the vehicle. The data collection system may further include a battery information analysis section that is configured to display a result of associating the information of the battery received by the battery information collection server with each vehicle using the identification information.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: May 19, 2015
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Junichi Matsumoto, Yasuhide Kurimoto, Kazuo Tojima, Yoshitaka Kiuchi
  • Publication number: 20130015982
    Abstract: A data collection system that collects information indicating a status of a battery mounted on a vehicle from the vehicle after shipment from a factory, includes a battery information collection server that is configured to periodically receive information of the battery and identification information, with which it is possible to identify the vehicle, that are transmitted wirelessly from a computer that is mounted on the vehicle and is configured to acquire and store the information of the battery mounted on the vehicle. The data collection system may further include a battery information analysis section that is configured to display a result of associating the information of the battery received by the battery information collection server with each vehicle using the identification information.
    Type: Application
    Filed: July 9, 2012
    Publication date: January 17, 2013
    Applicants: Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Junichi Matsumoto, Yasuhide Kurimoto, Kazuo Tojima, Yoshitaka Kiuchi
  • Patent number: 7998609
    Abstract: In a pre-replacement process, a replacement battery module is provided with a memory effect before being dispatched, by performing at least one of the process of performing a cyclic charge/discharge operation on the replacement battery module while limiting the width of SOC change to an intermediate range, and the process of setting an initial SOC and then letting the replacement battery module stand for a predetermined time in an environment of temperature above normal temperature. This pre-replacement process substantially eliminates the difference between the voltage characteristic of the replacement battery module yet to be used and the voltage characteristic of a battery module having a history of use, thereby achieving a uniform voltage characteristic of a battery pack as a whole.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: August 16, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masahiro Takada, Yoshiyuki Nakamura, Koji Otsubo, Kazuo Tojima
  • Publication number: 20100052616
    Abstract: In a pre-replacement process, a replacement battery module is provided with a memory effect before being dispatched, by performing at least one of the process of performing a cyclic charge/discharge operation on the replacement battery module while limiting the width of SOC change to an intermediate range, and the process of setting an initial SOC and then letting the replacement battery module stand for a predetermined time in an environment of temperature above normal temperature. This pre-replacement process substantially eliminates the difference between the voltage characteristic of the replacement battery module yet to be used and the voltage characteristic of a battery module having a history of use, thereby achieving a uniform voltage characteristic of a battery pack as a whole.
    Type: Application
    Filed: November 9, 2009
    Publication date: March 4, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masahiro Takada, Yoshiyuki Nakamura, Koji Otsubo, Kazuo Tojima
  • Patent number: 7087151
    Abstract: A hydrogen sensor which may be employed in an overcharge/overdischarge detector for a battery and a hydrogen leakage detector for a fuel cell is provided. The hydrogen sensor includes a sensor element and a diffused resistor member. The gas to be measured passes through the diffused resistor member and reaches the sensor element. The sensor element outputs a signal indicative of the concentration of hydrogen contained in the gas as a function of a decrease in concentration of oxygen contained in the gas arising from reaction of the hydrogen on the oxygen. The diffused resistor member is so designed that speeds of diffusion of the hydrogen and the oxygen when passing through the diffused resistor member are different from each other for increasing the sensitivity of measurement of the concentration of hydrogen.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: August 8, 2006
    Assignees: Denso Corporation, Nippon Soken, Inc., Toyota Jidosha Kabushiki Kaisha
    Inventors: Keigo Mizutani, Kazuhiko Yoshida, Hidetaka Hayashi, Masayoshi Iwase, Kazuo Tojima
  • Patent number: 6836122
    Abstract: A battery ECU includes a central processing unit (CPU). The CPU calculates plural deterioration degrees based on data input from a thermistor, an ammeter, and a voltmeter which detect state quantities of a nickel-hydrogen battery, and reads, from a memory, contribution degrees each of which corresponds to each of the calculated plural deterioration degrees. Then the CPU calculates a total deterioration degree of the nickel-hydrogen battery based on the deterioration degrees and the contribution degrees, calculates the contribution degrees based on the calculated total deterioration degree, and stores the contribution degrees in the memory.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: December 28, 2004
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kazuo Tojima
  • Publication number: 20030231006
    Abstract: A battery ECU includes a central processing unit (CPU). The CPU calculates plural deterioration degrees based on data input from a thermistor, an ammeter, and a voltmeter which detect state quantities of a nickel-hydrogen battery, and reads, from a memory, contribution degrees each of which corresponds to each of the calculated plural deterioration degrees. Then the CPU calculates a total deterioration degree of the nickel-hydrogen battery based on the deterioration degrees and the contribution degrees, calculates the contribution degrees based on the calculated total deterioration degree, and stores the contribution degrees in the memory.
    Type: Application
    Filed: May 16, 2003
    Publication date: December 18, 2003
    Inventor: Kazuo Tojima
  • Publication number: 20030224241
    Abstract: In a pre-replacement process, a replacement battery module is provided with a memory effect before being dispatched, by performing at least one of the process of performing a cyclic charge/discharge operation on the replacement battery module while limiting the width of SOC change to an intermediate range, and the process of setting an initial SOC and then letting the replacement battery module stand for a predetermined time in an environment of temperature above normal temperature. This pre-replacement process substantially eliminates the difference between the voltage characteristic of the replacement battery module yet to be used and the voltage characteristic of a battery module having a history of use, thereby achieving a uniform voltage characteristic of a battery pack as a whole.
    Type: Application
    Filed: May 30, 2003
    Publication date: December 4, 2003
    Inventors: Masahiro Takada, Yoshiyuki Nakamura, Koji Otsubo, Kazuo Tojima
  • Publication number: 20030168337
    Abstract: A hydrogen sensor which may be employed in an overcharge/overdischarge detector for a battery and a hydrogen leakage detector for a fuel cell is provided. The hydrogen sensor includes a sensor element and a diffused resistor member. The gas to be measured passes through the diffused resistor member and reaches the sensor element. The sensor element outputs a signal indicative of the concentration of hydrogen contained in the gas as a function of a decrease in concentration of oxygen contained in the gas arising from reaction of the hydrogen on the oxygen. The diffused resistor member is so designed that speeds of diffusion of the hydrogen and the oxygen when passing through the diffused resistor member are different from each other for increasing the sensitivity of measurement of the concentration of hydrogen.
    Type: Application
    Filed: February 10, 2003
    Publication date: September 11, 2003
    Applicant: Denso Corporation
    Inventors: Keigo Mizutani, Kazuhiko Yoshida, Hidetaka Hayashi, Masayoshi Iwase, Kazuo Tojima
  • Patent number: 6602636
    Abstract: A battery module includes a plurality of cells accommodating an electrode plate group and an electrolyte, and a single integrated battery case for accommodating the plurality of cells. The ratio of the component resistance including the connecting resistance between the cells to the reactive resistance of the electrode plate group and the electrolyte in each cell, is set in the range of 1:99-40:60 at a temperature of 25° C. Thereby, the internal resistance per cell is reduced, and higher power output and improved service life characteristics are achieved.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: August 5, 2003
    Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Akihiro Taniguchi, Shinji Hamada, Noriyuki Fujioka, Toyohiko Eto, Munehisa Ikoma, Toshiyuki Sekimori, Kazuo Tojima, Masayoshi Iwase, Tomokazu Yamauchi
  • Patent number: 6573685
    Abstract: The present invention provides a method of replacing secondary batteries. In the method, batteries can be replaced at a low cost and performance of an overall battery assembly can be maximized after the battery replacement. The battery assembly is composed by electrically connecting a plurality of secondary batteries in series or in parallel. When a portion of the secondary batteries is judged as defective, the defective batteries are replaced by replacement batteries. In an aspect of the method, voltage is detected for every predetermined voltage detection block unit concerning secondary batteries composing the battery assembly in order to judge defects of the secondary batteries in the voltage detection block unit. Batteries in a voltage detection block unit will be replaced with replacement batteries if they are judged as defective.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: June 3, 2003
    Assignees: Matsushita Electric Industrial Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Toshiaki Nakanishi, Hiromichi Kuno, Tadao Kimura, Yozoh Ogino, Sadao Mizuno, Kouji Otsubo, Masayoshi Iwase, Yoshiyuki Nakayama, Toshiyuki Sekimori, Kazuo Tojima
  • Publication number: 20020045095
    Abstract: A battery module includes a plurality of cells accommodating an electrode plate group and an electrolyte, and a single integrated battery case for accommodating the plurality of cells. The ratio of the component resistance including the connecting resistance between the cells to the reactive resistance of the electrode plate group and the electrolyte in each cell, is set in the range of 1:99-40:60 at a temperature of 25° C. Thereby, the internal resistance per cell is reduced, and higher power output and improved service life characteristics are achieved.
    Type: Application
    Filed: October 16, 2001
    Publication date: April 18, 2002
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD
    Inventors: Akihiro Taniguchi, Shinji Hamada, Noriyuki Fujioka, Toyohiko Eto, Munehisa Ikoma, Toshiyuki Sekimori, Kazuo Tojima, Masayoshi Iwase, Tomokazu Yamauchi
  • Publication number: 20010035737
    Abstract: The present invention provides a method of replacing secondary batteries. In the method, batteries can be replaced at a low cost and performance of an overall battery assembly can be maximized after the battery replacement. The battery assembly is composed by electrically connecting a plurality of secondary batteries in series or in parallel. When a portion of the secondary batteries is judged as defective, the defective batteries are replaced by replacement batteries. In an aspect of the method, voltage is detected for every predetermined voltage detection block unit concerning secondary batteries composing the battery assembly in order to judge defects of the secondary batteries in the voltage detection block unit. Batteries in a voltage detection block unit will be replaced with replacement batteries if they are judged as defective.
    Type: Application
    Filed: April 20, 2001
    Publication date: November 1, 2001
    Applicant: Matsushita Electric Industrial Co. Ltd.
    Inventors: Toshiaki Nakanishi, Hiromichi Kuno, Tadao Kimura, Youzoh Ogino, Sadao Mizuno, Kouji Otsubo, Masayoshi Iwase, Yoshiyuki Nakayama, Toshiyuki Sekimori, Kazuo Tojima
  • Patent number: 6163135
    Abstract: The temperature of a battery in a hybrid car is supervised by temperature sensors. When the temperature of the battery is at a temperature not exceeding a predetermined temperature, a battery ECU issues a command to a control CPU to perform forcible charge/discharge of the battery to raise the temperature of the battery. When raising of the temperature is performed by charging, a requested output from an engine is increased as compared with a usual state. In such a state, motor-generators are operated as generators so as to generate electric power and charge the battery by passing an electric current to the battery rather than generating a driving force. When raising of the temperature is performed by discharging, the requested output from the engine is reduced as compared with the usual state. In this case, the motor-generators are operated as drive motors to consume electric power so as to draw electric current from the battery causing discharge of the battery.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: December 19, 2000
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshiyuki Nakayama, Masahiko Mitsui, Yoshiaki Kikuchi, Kazuo Tojima
  • Patent number: 6133707
    Abstract: A voltage detector (12) detects the voltage levels of the battery blocks of the battery set (10). A presence of an overdischarged cell is detected when a voltage difference between each of the battery blocks reaches or exceeds a predetermined value (for example, 1V). At this point, a battery ECU (14) sets the SOC value of the battery set (10) at the lower control limit value (for example, 20%). This triggers an HV ECU (16) to control the load (18) such that charging is effectuated in the battery set (10). If further discharge occurs, the battery set (10) is disconnected from the load (18) by a relay (20).
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: October 17, 2000
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshiaki Kikuchi, Toshiyuki Sekimori, Kazuo Tojima, Yoshiyuki Nakayama
  • Patent number: 6127805
    Abstract: In the area of the charge level of 20.about.80% where the charge level of a battery does not appear in the terminal voltage of the battery, the battery ECU estimates charge level by integrating the currents of the charge and discharge of the battery. When the engine ECU detects that the ignition key is turned on, the motor generators are driven by the engine, and the generated electric power is accumulated in the battery. When the area where the charge level appears in the terminal voltage, is reached, the calculation of the charge level is performed from the current and voltage at that time. When this charge level has reached 80%, the calibration of said estimated charge level is performed by this value. Furthermore, it is also possible for this calibration to be prohibited when a heavy current is flowing and the error may become large in the calculation of the charge level. By the above mentioned methods, the charge level of a battery can accurately be detected.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: October 3, 2000
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshiaki Kikuchi, Toshiyuki Sekimori, Fumihiko Asakawa, Yoshimi Shoji, Kazuo Tojima, Masatoshi Uchida, Susumu Ukita, Hiromichi Kuno
  • Patent number: 6075346
    Abstract: The charge and discharge are performed by a proper electric power corresponding to the service environment of a battery and the state of the battery. When the temperature of the battery is not more than a specified temperature, or not less than another specified temperature, the upper limit value Pin-s of the charging electric power and the upper limit value Pout-s of the discharging electric power are determined so as to be smaller than those at a normal temperature. The temperature of the battery is detected, and the charging electric power and the discharging electric power are determined so that they may be not more than the upper limit values Pin-s, Pout-s of the charging and the discharging electric power at this temperature, and the charge control of the battery is performed.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: June 13, 2000
    Assignees: Toyota Jidosha Kabushiki Kaisha, Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshiaki Kikuchi, Fumihiko Asakawa, Kazuo Tojima, Susumu Ukita, Yoshimi Shoji, Toshiaki Nakanishi, Tadao Kimura