Patents by Inventor Tetsuro Shigemizu
Tetsuro Shigemizu 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: 10677146Abstract: A power supply device includes a first power supply circuit, a second power supply circuit, and a power supply-switching unit. The first power supply circuit includes a power storage device having a first capacity and supplies electricity of a first voltage to the electric motor. The second power supply circuit includes a power storage device having a second capacity smaller than the first capacity and supplies electricity of a second voltage higher than the first voltage to the electric motor. The power supply-switching unit supplies electricity from the second power supply circuit to the electric motor at the tune of starting an operation of the electric motor and thereafter supplies electricity from the first power supply circuit to the electric motor.Type: GrantFiled: March 9, 2016Date of Patent: June 9, 2020Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.Inventors: Tetsuro Shigemizu, Yukio Yamashita
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Publication number: 20200088092Abstract: A power supply device includes a first power supply circuit, a second power supply circuit, and a power supply-switching unit. The first power supply circuit includes a power storage device having a first capacity and supplies electricity of a first voltage to the electric motor. The second power supply circuit includes a power storage device having a second capacity smaller than the first capacity and supplies electricity of a second voltage higher than the first voltage to the electric motor. The power supply-switching unit supplies electricity from the second power supply circuit to the electric motor at the tune of starting an operation of the electric motor and thereafter supplies electricity from the first power supply circuit to the electric motor.Type: ApplicationFiled: March 9, 2016Publication date: March 19, 2020Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.Inventors: Tetsuro SHIGEMIZU, Yukio YAMASHITA
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Patent number: 9300154Abstract: A power management system includes: a first power source that includes a first storage cell; a second power source that includes a second storage cell; a power load that is driven with first power output by the first power source and second power output by the second power source; and an integrated control device that controls the first power and the second power such that a first cell temperature of the first storage cell is substantially the same as a second cell temperature of the second storage cell.Type: GrantFiled: February 14, 2013Date of Patent: March 29, 2016Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Takehiko Nishida, Tetsuro Shigemizu
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Publication number: 20150301117Abstract: A parameter estimating device includes a state quantity measurement unit 11 which acquires measured values for state quantities having a correlation with a plurality of parameters, a state quantity calculation unit 12 which calculates and acquires calculated values corresponding to the measured values based on a correlation expression of the estimated values of the plurality of parameters and the state quantities, and an optimum estimated value identification unit 13 which finds an error evaluation function value calculated based on a value obtained by multiplying the total sum of the absolute quantities of the errors of the calculated values corresponding to the measured values by a first coefficient and a value obtained by multiplying the degree of variation of the errors by a second coefficient, and identifies an optimum estimated value having a minimum error evaluation function value while changing the estimated values.Type: ApplicationFiled: December 2, 2013Publication date: October 22, 2015Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazuyuki Wakasugi, Katsuaki Morita, Kazuki Ozaki, Tetsuro Shigemizu, Masayuki Hashimoto
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Publication number: 20150263396Abstract: A battery state monitoring device (3) is provided with: a substrate (100) that is provided with a terminal insertion hole (111B) into which an electrode terminal (75) of a battery (2) is inserted; a stator (141B) which is formed of a heat conductive material, is provided around the terminal insertion hole (111B), and is fitted to the electrode terminal (75) so as to be in contact with the electrode terminal (75) in a state where the electrode terminal (75) is inserted into the terminal insertion hole (111B); and a temperature measuring element (151) which is affixed to the substrate (100) and measures the temperature of the electrode terminal (75) through the stator (141B).Type: ApplicationFiled: December 5, 2013Publication date: September 17, 2015Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tsuyoshi Kitamura, Mitsufumi Goto, Tetsuro Shigemizu, Kohei Kawazoe, Naohiko Matsuda, Hideyasu Takatsuji, Takehiko Nishida
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Patent number: 9124102Abstract: In a battery system of the invention, a BMS calculates a maximum charge rate representing a maximum value from present charge rates of plurality of secondary batteries constituting an assembled battery and a minimum charge rate. Then, the BMS generates a normal waveform signal in which the maximum charge rate is determined as a maximum peak and the minimum charge rate is determined as a minimum peak as a waveform signal which is displayed in a charge rate display range where a full charge rate in the case of a full charge state of the secondary battery is determined as an upper limit and an empty charge rate in the case of an empty charge state of the secondary battery is determined as a lower limit. Then, the BMS displays the normal waveform signal in the charge rate display range.Type: GrantFiled: January 18, 2011Date of Patent: September 1, 2015Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventor: Tetsuro Shigemizu
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Patent number: 9026389Abstract: A first estimated state of charge is output based on an estimated open voltage of a secondary battery. A second estimated state of charge is output based on the result obtained by integrating the measured current of the secondary battery and the upper limit of the error of the measured current and the capacity of the secondary battery. A third estimated state of charge is output based on the result obtained by integrating the measured current and the lower limit of the error of the measured current and the battery capacity. A fourth estimated state of charge is output based on the result obtained by integrating the measured current and the battery capacity. The fourth estimated state of charge is output as a state of charge within the period of the predetermined period.Type: GrantFiled: February 24, 2010Date of Patent: May 5, 2015Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Tetsuro Shigemizu, Masami Iida
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Patent number: 8994334Abstract: The battery state-of-charge calculation device (100) is provided with a SOCV calculation unit (5) which outputs a first state of charge calculated based on voltage data, a SOCI calculation unit (6) which outputs a second state of charge calculated based on current data, an estimated impedance voltage calculation unit (12) which calculates an impedance voltage value based on an effective state of charge and the current data, a static determination unit (7) which determines that the impedance voltage value remains static for a predetermined time or longer in a range identified by a predetermined threshold value and outputs the determination result; and a SOC decision unit (20) which, based on the determination result, outputs the first state of charge as the effective state of charge where the impedance voltage value is static and outputs the second state of charge as the effective state of charge where the impedance voltage value is not static.Type: GrantFiled: June 3, 2009Date of Patent: March 31, 2015Assignees: Mitsubishi Heavy Industries, Ltd., Kyushu Electric Power Co., Inc.Inventors: Tetsuro Shigemizu, Masami Iida, Takehiko Nishida, Masazumi Ohishi, Kazuyuki Adachi, Shinji Murakami, Yoshihiro Wada
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Patent number: 8963501Abstract: A voltage equalization device of a power storage device provided with battery packs in which a plurality of secondary cells are connected, power converters provided in association with the battery packs, and controllers that control the power converters, and in which the battery packs are connected in parallel via the individual power converters includes a decision portion and a voltage-adjusting portion. The decision portion obtains battery-pack information regarding the states of charge/discharge of the individual battery packs and decides, for each battery pack, whether or not to perform voltage adjustment on the basis of the battery-pack information. When the decision portion decides that the voltage adjustment is to be performed, the voltage-adjusting portion generates offset instructions for adjusting the states of charge/discharge and outputs the offset instructions to the controllers of the power converters associated with the battery packs.Type: GrantFiled: December 2, 2009Date of Patent: February 24, 2015Assignees: Mitsubishi Heavy Industries, Ltd., Kyushu Electric Power Co., IncInventors: Tetsuro Shigemizu, Takehiko Nishida, Katsuo Hashizaki, Masaaki Minami, Keiichiro Tanaka, Kazuyuki Adachi, Shinji Murakami, Kouji Kurayama, Hirofumi Fujita
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Patent number: 8917060Abstract: A secondary cell control system includes a plurality of cells; a charging circuit section and a discharging circuit section. The charging circuit section charges cells selected from among said plurality of cells, and the discharging circuit section discharges cells selected from among said plurality of cells.Type: GrantFiled: June 30, 2009Date of Patent: December 23, 2014Assignees: Mitsubishi Heavy Industries, Ltd., Kyushu Electric Power Co., Inc.Inventors: Tetsuro Shigemizu, Takehiko Nishida, Katsuo Hashizaki, Hidehiko Tajima, Katsuaki Kobayashi, Kazuyuki Adachi, Shinji Murakami, Yoshihiro Wada, Hiroyuki Shibata, Kouji Kurayama
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Patent number: 8901893Abstract: It is an object to effectively output electrical energy of a storage battery to an electrical power system serving as a whole distributed power supply system by effectively utilizing the electrical energy within a charging ratio range that does not cause overcharging or overdischarging of the storage battery. In a hybrid distributed power supply system, the target supply electrical power is set based on the electrical power generation output of the electrical power generator and the charging state of the storage battery, and the target supply electrical power is restricted within a predetermined permissible supply electrical power range when the target supply electrical power deviates from the predetermined permissible supply electrical power range.Type: GrantFiled: December 18, 2007Date of Patent: December 2, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Tetsuro Shigemizu, Takehiko Nishida, Katsuaki Kobayashi, Hidehiko Tajima
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Patent number: 8653792Abstract: An object is to reliably conduct cell balancing operation while suppressing deterioration of batteries and maintaining operating efficiency. When the cell balance control by the cell balancing circuit 3 is started, the system control device 30 sets an on/off device corresponding to the arm where the cell balance control is conducted to the open state; and when the cell balance control is completed, and the difference between the terminal voltage of a battery pack of the arm where the cell balance control has been conducted and the terminal voltages of the battery packs of the other arms falls within a preset allowable range, sets the on/off device, which has been in the open state, to the closed state.Type: GrantFiled: October 30, 2008Date of Patent: February 18, 2014Assignees: Mitsubishi Heavy Industries, Ltd., Kyushu Electric Power Co., Inc.Inventors: Takehiko Nishida, Tetsuro Shigemizu, Katsuo Hashizaki, Kazuyuki Adachi, Shinji Murakami, Yoshihiro Wada, Kouji Kurayama, Hirofumi Fujita
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Patent number: 8598843Abstract: An object is to reliably conduct cell balancing operation while suppressing deterioration of batteries and maintaining operating efficiency. When the cell balance control by the cell balancing circuit 3 is started, the system control device 30 sets an on/off device corresponding to the arm where the cell balance control is conducted to the open state; and when the cell balance control is completed, and the difference between the terminal voltage of a battery pack of the arm where the cell balance control has been conducted and the terminal voltages of the battery packs of the other arms falls within a preset allowable range, sets the on/off device, which has been in the open state, to the closed state.Type: GrantFiled: October 30, 2008Date of Patent: December 3, 2013Assignees: Mitsubishi Heavy Industries, Ltd., Kyushu Electric Power Co., Inc.Inventors: Takehiko Nishida, Tetsuro Shigemizu, Katsuo Hashizaki, Kazuyuki Adachi, Shinji Murakami, Yoshihiro Wada, Kouji Kurayama, Hirofumi Fujita
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Patent number: 8463564Abstract: An abnormality prediction system for secondary batteries according to the present invention includes: a parameter value detection portion that detects parameter values each corresponding to each of a plurality of secondary batteries to determine whether all the parameter values are normal or not; and a singular state determination portion that determines, if a difference between a reference value calculated by use of all the parameter values determined to be normal by the parameter value detection portion and at least one of the parameter values is not less than a threshold value, the secondary battery corresponding to the parameter value with the difference not less than the threshold value to be in a state different from those of the other secondary batteries out of the plurality of secondary batteries.Type: GrantFiled: September 28, 2010Date of Patent: June 11, 2013Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Hitoshi Matsumura, Masazumi Ohishi, Masataka Uchida, Katsuaki Kobayashi, Tetsuro Shigemizu, Hidehiko Tajima
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Publication number: 20120310563Abstract: A first estimated state of charge is output based on an estimated open voltage of a secondary battery. A second estimated state of charge is output based on the result obtained by integrating the measured current of the secondary battery and the upper limit of the error of the measured current and the capacity of the secondary battery. A third estimated state of charge is output based on the result obtained by integrating the measured current and the lower limit of the error of the measured current and the battery capacity. A fourth estimated state of charge is output based on the result obtained by integrating the measured current and the battery capacity. The fourth estimated state of charge is output as a state of charge within the period of the predetermined period.Type: ApplicationFiled: February 24, 2010Publication date: December 6, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tetsuro Shigemizu, Masami Iida
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Publication number: 20120299597Abstract: In a battery system of the invention, a BMS calculates a maximum charge rate representing a maximum value from present charge rates of plurality of secondary batteries constituting an assembled battery and a minimum charge rate. Then, the BMS generates a normal waveform signal in which the maximum charge rate is determined as a maximum peak and the minimum charge rate is determined as a minimum peak as a waveform signal which is displayed in a charge rate display range where a full charge rate in the case of a full charge state of the secondary battery is determined as an upper limit and an empty charge rate in the case of an empty charge state of the secondary battery is determined as a lower limit. Then, the BMS displays the normal waveform signal in the charge rate display range.Type: ApplicationFiled: January 18, 2011Publication date: November 29, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventor: Tetsuro Shigemizu
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Publication number: 20120086405Abstract: The battery state-of-charge calculation device (100) is provided with a SOCV calculation unit (5) which outputs a first state of charge calculated based on voltage data, a SOCI calculation unit (6) which outputs a second state of charge calculated based on current data, an estimated impedance voltage calculation unit (12) which calculates an impedance voltage value based on an effective state of charge and the current data, a static determination unit (7) which determines that the impedance voltage value remains static for a predetermined time or longer in a range identified by a predetermined threshold value and outputs the determination result; and a SOC decision unit (20) which, based on the determination result, outputs the first state of charge as the effective state of charge where the impedance voltage value is static and outputs the second state of charge as the effective state of charge where the impedance voltage value is not static.Type: ApplicationFiled: June 3, 2009Publication date: April 12, 2012Applicants: KYUSHU ELECTRIC POWER CO., INC., MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tetsuro Shigemizu, Masami Iida, Takehiko Nishida, Masazumi Ohishi, Kazuyuki Adachi, Shinji Murakami, Yoshihiro Wada
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Publication number: 20110279085Abstract: A voltage equalization device of a power storage device provided with battery packs in which a plurality of secondary cells are connected, power converters provided in association with the battery packs, and controllers that control the power converters, and in which the battery packs are connected in parallel via the individual power converters includes a decision portion and a voltage-adjusting portion. The decision portion obtains battery-pack information regarding the states of charge/discharge of the individual battery packs and decides, for each battery pack, whether or not to perform voltage adjustment on the basis of the battery-pack information. When the decision portion decides that the voltage adjustment is to be performed, the voltage-adjusting portion generates offset instructions for adjusting the states of charge/discharge and outputs the offset instructions to the controllers of the power converters associated with the battery packs.Type: ApplicationFiled: December 2, 2009Publication date: November 17, 2011Applicants: KYUSHU ELECTRIC POWER CO., INC., MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tetsuro Shigemizu, Takehiko Nishida, Katsuo Hashizaki, Masaaki Minami, Keiichiro Tanaka, Kazuyuki Adachi, Shinji Murakami, Kouji Kurayama, Hirofumi Fujita
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Publication number: 20110221394Abstract: A secondary cell control system includes a plurality of cells; a charging circuit section and a discharging circuit section. The charging circuit section charges cells selected from among said plurality of cells, and the discharging circuit section discharges cells selected from among said plurality of cells.Type: ApplicationFiled: June 30, 2009Publication date: September 15, 2011Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., KYUSHU ELECTRIC POWER CO., INC.Inventors: Tetsuro Shigemizu, Takehiko Nishida, Katsuo Hashizaki, Hidehiko Tajima, Katsuaki Kobayashi, Kazuyuki Adachi, Shinji Murakami, Yoshihiro Wada, Hiroyuki Shibata, Kouji Kurayama
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Publication number: 20110127964Abstract: An object is to reliably conduct cell balancing operation while suppressing deterioration of batteries and maintaining operating efficiency. When the cell balance control by the cell balancing circuit 3 is started, the system control device 30 sets an on/off device corresponding to the arm where the cell balance control is conducted to the open state; and when the cell balance control is completed, and the difference between the terminal voltage of a battery pack of the arm where the cell balance control has been conducted and the terminal voltages of the battery packs of the other arms falls within a preset allowable range, sets the on/off device, which has been in the open state, to the closed state.Type: ApplicationFiled: October 30, 2008Publication date: June 2, 2011Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., KYUSHU ELECTRIC POWER CO., INC.Inventors: Takehiko Nishida, Tetsuro Shigemizu, Katsuo Hashizaki, Kazuyuki Adachi, Shinji Murakami, Yoshihiro Wada, Kouji Kurayama, Hirofumi Fujita