Patents by Inventor Yasuyuki Takei
Yasuyuki Takei 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: 11342605Abstract: A power storage device includes a power storage module including a plurality of power storage cells aligned in one direction, a healer formed to be deformable along a shape of the power storage module and configured to heat the power storage module, and an elastic member configured to press the heater against the power storage module.Type: GrantFiled: January 16, 2019Date of Patent: May 24, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuma Asakura, Masatoshi Hayashita, Yasuyuki Takei
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Patent number: 11239508Abstract: A battery pack includes: a cell stack; a first duct and a second duct configured to feed cooling air toward the cell stack; and a housing case. The first duct and the second duct extend in a first direction and are spaced apart from each other in a second direction, the first direction being parallel to a front-back direction of a vehicle in a mounted state in which the battery pack is mounted on the vehicle, the second direction being parallel to a width direction of the vehicle in the mounted state. The first duct is arranged on an outer side of the cell stack on one side in the second direction, and the second duct is arranged on an outer side of the cell stack on the other side in the second direction.Type: GrantFiled: March 25, 2019Date of Patent: February 1, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuma Asakura, Shigeyuki Inoue, Hirotaka Watanabe, Yasuyuki Takei, Yusuke Kuruma
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Patent number: 10833310Abstract: A secondary battery includes: a battery element; a casing which accommodates the battery element; a positive electrode terminal and a negative electrode terminal provided to the casing and electrically connected to the battery element; and a cut-off portion which switches from a grounded state in which the casing and one terminal of the positive electrode terminal and the negative electrode terminal have an identical potential, to a cut-off state in which the casing and the one terminal are electrically cut off. The one terminal has a facing portion which faces the casing, and the cut-off portion is arranged between the facing portion and the casing. When the casing is externally short-circuited, the cut-off portion switches from the grounded state to the cut-off state by being deformed by heat generated as a short-circuit current flows.Type: GrantFiled: December 11, 2018Date of Patent: November 10, 2020Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kazuma Asakura, Yasuyuki Takei
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Publication number: 20190305390Abstract: A battery pack includes: a cell stack; a first duct and a second duct configured to feed cooling air toward the cell stack; and a housing case. The first duct and the second duct extend in a first direction and are spaced apart from each other in a second direction, the first direction being parallel to a front-back direction of a vehicle in a mounted state in which the battery pack is mounted on the vehicle, the second direction being parallel to a width direction of the vehicle in the mounted state. The first duct is arranged on an outer side of the cell stack on one side in the second direction, and the second duct is arranged on an outer side of the cell stack on the other side in the second direction.Type: ApplicationFiled: March 25, 2019Publication date: October 3, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuma ASAKURA, Shigeyuki INOUE, Hirotaka WATANABE, Yasuyuki TAKEI, Yusuke KURUMA
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Publication number: 20190221903Abstract: A power storage device includes a power storage module including a plurality of power storage cells aligned in one direction, a healer formed to be deformable along a shape of the power storage module and configured to heat the power storage module, and an elastic member configured to press the heater against the power storage module.Type: ApplicationFiled: January 16, 2019Publication date: July 18, 2019Inventors: Kazuma Asakura, Masatoshi Hayashita, Yasuyuki Takei
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Publication number: 20190198850Abstract: A secondary battery includes: a battery element; a casing which accommodates the battery element; a positive electrode terminal and a negative electrode terminal provided to the casing and electrically connected to the battery element; and a cut-off portion which switches from a grounded state in which the casing and one terminal of the positive electrode terminal and the negative electrode terminal have an identical potential, to a cut-off state in which the casing and the one terminal are electrically cut off. The one terminal has a facing portion which faces the casing, and the cut-off portion is arranged between the facing portion and the casing. When the casing is externally short-circuited, the cut-off portion switches from the grounded state to the cut-off state by being deformed by heat generated as a short-circuit current flows.Type: ApplicationFiled: December 11, 2018Publication date: June 27, 2019Inventors: Kazuma Asakura, Yasuyuki Takei
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Patent number: 9389597Abstract: This disclosure discloses a motor control device including a main circuit, a voltage detector, and a controller. The controller includes a position controller and a speed controller, The position controller generates a speed command. The speed controller generates a torque command and controls a inverter based on the torque command. Further, the controller includes a torque limiter, and a speed matching instruction part. The torque limiter starts torque limiting by the torque command to a predetermined torque or less and cancels the torque limiting. The speed matching instruction part matches the speed command with a first position command speed after the cancellation of the torque limiting. The holding part calculates and holds an accumulated position deviation.Type: GrantFiled: September 12, 2014Date of Patent: July 12, 2016Assignee: KABUSHIKI KAISHA YASKAWA DENKIInventors: Toshinobu Kira, Tadashi Okubo, Yasuyuki Takei, Makoto Akama, Yusuke Oka
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Patent number: 9342057Abstract: This disclosure discloses a motor control apparatus including a controller. The controller includes a position controller and a speed controller. The controller is configured to control the inverter on the basis of the torque command. The controller includes a torque limiter configured to start first torque limitation which limits a commanded torque based on the torque command to a first torque or less in a case where the voltage detector detects that the DC voltage falls below a predetermined voltage, and to cancel the first torque limitation in a case where the voltage detector detects that the DC voltage exceeds the predetermined voltage. The controller includes a speed limiter configured to limit a commanded speed based on the speed command to a first speed or less in a case where the torque limiter cancels the first torque limitation.Type: GrantFiled: August 21, 2014Date of Patent: May 17, 2016Assignee: KABUSHIKI KAISHA YASKAWA DENKIInventors: Toshinobu Kira, Tadashi Okubo, Yasuyuki Takei, Makoto Akama
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Publication number: 20140375243Abstract: This disclosure discloses a motor control device including a main circuit, a voltage detector, and a controller. The controller includes a position controller and a speed controller, The position controller generates a speed command The speed controller generates a torque command and controls a inverter based on the torque command Further, the controller includes a torque limiter, and a speed matching instruction part. The torque limiter starts torque limiting by the torque command to a predetermined torque or less and cancels the torque limiting. The speed matching instruction part matches the speed command with a first position command speed after the cancellation of the torque limiting. The holding part calculates and holds an accumulated position deviation.Type: ApplicationFiled: September 12, 2014Publication date: December 25, 2014Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Toshinobu KIRA, Tadashi OKUBO, Yasuyuki TAKEI, Makoto AKAMA, Yusuke OKA
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Publication number: 20140354208Abstract: This disclosure discloses a motor control apparatus including a controller. The controller includes a position controller and a speed controller. The controller is configured to control the inverter on the basis of the torque command. The controller includes a torque limiter configured to start first torque limitation which limits a commanded torque based on the torque command to a first torque or less in a case where the voltage detector detects that the DC voltage falls below a predetermined voltage, and to cancel the first torque limitation in a case where the voltage detector detects that the DC voltage exceeds the predetermined voltage. The controller includes a speed limiter configured to limit a commanded speed based on the speed command to a first speed or less in a case where the torque limiter cancels the first torque limitation.Type: ApplicationFiled: August 21, 2014Publication date: December 4, 2014Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Toshinobu KIRA, Tadashi OKUBO, Yasuyuki TAKEI, Makoto AKAMA
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Patent number: 8120302Abstract: A servo control apparatus capable of suppressing adverse effects of disturbance, load variation and the like, and realizing robust and high-performance speed control. The apparatus includes both of the following observers: a disturbance observer for adding a disturbance compensation torque Tf, calculated from a torque command T* and an electric motor rotational speed ?m, to a torque command basic signal T0*, calculated on the basis of a deviation between a speed command ?* and a feedback speed ?f by a PI control section, thus outputting the torque command T*; and a phase advance compensation observer for generating, from the torque command basic signal T0* and the electric motor rotational speed ?m, an output of a nominal plant serving as an element in which no delay occurs, thus outputting the output as the feedback speed ?f.Type: GrantFiled: January 23, 2007Date of Patent: February 21, 2012Assignee: Kabushiki Kaisha Yaskawa DenkiInventors: Wennong Zhang, Mitsujiro Sawamura, Yasuyuki Takei
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Patent number: 8044621Abstract: A motor controller supplies power to a motor and drives the motor, the motor including a position detector. The motor controller includes a velocity control unit which generates a torque instruction by using a velocity instruction and a velocity signal; a correction processing unit which Fourier-transforms the torque instruction, extracts first-, second-, and sixth-order frequency components from the Fourier-transformed torque instruction, extracts an order component having the largest spectrum from the extracted order components, and generates a sine wave correction signal; an adder which adds the sine wave correction signal to the torque instruction, and generates a new torque instruction; and a position-signal generation unit which generates a position signal by using a position detection signal of the position detector.Type: GrantFiled: June 11, 2009Date of Patent: October 25, 2011Assignee: Kabushiki Kaisha Yaskawa DenkiInventor: Yasuyuki Takei
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Publication number: 20090251087Abstract: A motor controller supplies power to a motor and drives the motor, the motor including a position detector. The motor controller includes a velocity control unit which generates a torque instruction by using a velocity instruction and a velocity signal; a correction processing unit which Fourier-transforms the torque instruction, extracts first-, second-, and sixth-order frequency components from the Fourier-transformed torque instruction, extracts an order component having the largest spectrum from the extracted order components, and generates a sine wave correction signal; an adder which adds the sine wave correction signal to the torque instruction, and generates a new torque instruction; and a position-signal generation unit which generates a position signal by using a position detection signal of the position detector.Type: ApplicationFiled: June 11, 2009Publication date: October 8, 2009Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventor: Yasuyuki TAKEI
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Publication number: 20090243533Abstract: The present invention provides a servo control apparatus capable of suppressing adverse effects of disturbance, load variation and the like, and realizing robust and high-performance speed control. The apparatus includes both of the following observers: a disturbance observer (5) for adding a disturbance compensation torque Tf, calculated from a torque command T* and an electric motor rotational speed ?m, to a torque command basic signal T0*, calculated on the basis of a deviation between a speed command ?* and a feedback speed ?f by a PI control section (2), thus outputting the torque command T*; and a phase advance compensation observer (6) for generating, from the torque command basic signal T0* and the electric motor rotational speed ?m, an output of a nominal plant (61) serving as an element in which no delay occurs, thus outputting the output as the feedback speed ?f.Type: ApplicationFiled: January 23, 2007Publication date: October 1, 2009Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Wennong Zhang, Mitsujiro Sawamura, Yasuyuki Takei
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Patent number: 7589488Abstract: There is provided a motor control apparatus for setting, changing, resetting a control gain or a notch filter frequency Nf without using a parameter inputting apparatus, considerably reducing a procedure required in adjustment of the gain which has been needed from introducing the motor control apparatus until normal operation thereof, and capable of being simply dealt with even by an unskilled person. There is constructed a simple constitution including 2 pieces of rotary switches (1, 2) which are inexpensive and provided with small mounting areas as an input setting apparatus and 5 of LED (5) as a display apparatus, selecting a gain by a contact of the rotary switch, automatically setting a machine resonance filter frequency by detecting a generated vibration frequency, and only changing the rotary switch for temporarily releasing and resetting the control gain or the notch filter frequency Nf.Type: GrantFiled: July 11, 2005Date of Patent: September 15, 2009Assignee: Kabushiki Kaisha Yaskawa DenkiInventors: Takashi Kitazawa, Kazuhide Takao, Yasuyuki Takei
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Publication number: 20090127174Abstract: An oil strainer for a transmission including a resin-made upper case which is formed in a side surface of an upper part of a communication port for communication with a pump and which has an upper flange along the outer periphery thereof, a resin-made lower case which is provided with an oil suction port in a lower surface thereof and which has a lower flange joined to the upper flange of the upper case, and a filter member which is disposed in a space formed by joining the upper and lower cases and which filters an oil flowing from the oil suction port to the communication port. The oil strainer is configured to further includes an oil suction port cover member which is so formed as to cover at least an inside upper surface of the oil suction port and which forms a passage for conducting the oil to the filter member.Type: ApplicationFiled: October 31, 2008Publication date: May 21, 2009Applicant: HONDA MOTOR CO., LTD.Inventors: Isamu SHINBORI, Yoshimichi TSUBATA, Susumu TAKEI, Yasuyuki Takei
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Patent number: 7501783Abstract: In a method of automatically setting the vibration suppression filter, when a vibration detection portion detects a vibration A2, a state variable frequency analysis portion analyzes the frequencies of data from a state variable trace portion to calculate a vibration frequency A3, and the frequency characteristics of the vibration suppression filter is set based on vibration frequency A5. A vibration level store portion stores the vibration level before the automatic setting of the vibration suppression filter, a filter setting selection portion compares the vibration level after the automatic setting with the vibration level before the automatic setting A6. When the vibration level after the automatic setting is larger than the vibration level before the automatic setting, restoring of the setting of the vibration suppression filter to the state before the automatic setting A7 and/or reducing the gain of a servo control portion.Type: GrantFiled: June 10, 2005Date of Patent: March 10, 2009Assignee: Kabushiki Kaisha Yaskawa DenkiInventors: Atsushi Imadu, Yasuyuki Takei, Kazuhide Takao
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Publication number: 20070229016Abstract: There is provided a motor control apparatus for setting, changing, resetting a control gain or a notch filter frequency Nf without using a parameter inputting apparatus, considerably reducing a procedure required in adjustment of the gain which has been needed from introducing the motor control apparatus until normal operation thereof, and capable of being simply dealt with even by an unskilled person. There is constructed a simple constitution including 2 pieces of rotary switches (1, 2) which are inexpensive and provided with small mounting areas as an input setting apparatus and 5 of LED (5) as a display apparatus, selecting a gain by a contact of the rotary switch, automatically setting a machine resonance filter frequency by detecting a generated vibration frequency, and only changing the rotary switch for temporarily releasing and resetting the control gain or the notch filter frequency Nf.Type: ApplicationFiled: July 11, 2005Publication date: October 4, 2007Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Takashi Kitazawa, Kazuhide Takao, Yasuyuki Takei
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Publication number: 20070205740Abstract: In a method of automatically setting the vibration suppression filter, when a vibration detection portion detects a vibration A2, a state variable frequency analysis portion analyzes the frequencies of data from a state variable trace portion to calculate a vibration frequency A3, and the frequency characteristics of the vibration suppression filter is set based on a vibration frequency A5. A vibration level store portion stores the vibration level before the automatic setting of the vibration suppression filter, a filter setting selection portion compares the vibration level after the automatic setting with the vibration level before the automatic setting A6. When the vibration level after the automatic setting is larger than the vibration level before the automatic setting, restoring of the setting of the vibration suppression filter to the state before the automatic setting A7 and/or reducing the gain of a servo control portion.Type: ApplicationFiled: June 10, 2005Publication date: September 6, 2007Applicant: Kabushiki Kaisha Yaskawa DenkiInventors: Atsushi Imadu, Yasuyuki Takei, Kazuhide Takao