Patents by Inventor Shunsuke AMBO
Shunsuke AMBO 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: 10780764Abstract: An on-board fluid machine includes a housing configured to allow fluid to flow into the housing, an electric motor accommodated in the housing, and a driver that is supplied with DC power and drives the electric motor. The driver includes a low-pass filter circuit and an inverter circuit. The low-pass filter circuit includes a common mode choke coil and a capacitor. The driver further includes a damping unit located at a position where magnetic field lines produced by the common mode choke coil generate eddy current.Type: GrantFiled: January 9, 2018Date of Patent: September 22, 2020Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Shunsuke Ambo, Fumihiro Kagawa, Yoshiki Nagata
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Patent number: 10707770Abstract: An on-board fluid machine includes a housing configured to allow fluid to flow into the housing, an electric motor accommodated in the housing, and a driver that is supplied with DC power and drives the electric motor. The driver includes a low-pass filter circuit and an inverter circuit. The low-pass filter circuit includes a common mode choke coil and a capacitor. The driver further includes a damping unit located at a position where magnetic field lines produced by the common mode choke coil generate eddy current.Type: GrantFiled: January 9, 2018Date of Patent: July 7, 2020Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Shunsuke Ambo, Fumihiro Kagawa, Yoshiki Nagata
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Patent number: 10544805Abstract: An on-vehicle motor-driven compressor includes a compression unit, an electric motor, and an inverter device. The inverter device includes an inverter circuit and a noise reducer. The noise reducer includes a common-mode choke coil and a smoothing capacitor. The common-mode choke coil includes a case, a loop-shaped core accommodated in the case, a first winding and a second winding that are wound around the case, and a loop-shaped conductor that covers the core and the case. Parts of the conductor that are opposed to each other between the first winding and the second winding are spaced apart from each other. The case includes two projections that project from an outer surface of the case. The conductor is held by the two projections such that the conductor is spaced apart from the first winding and the second winding.Type: GrantFiled: March 27, 2019Date of Patent: January 28, 2020Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Shunsuke Ambo, Fumihiro Kagawa, Yoshiki Nagata
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Patent number: 10434842Abstract: An in-vehicle inverter device includes a noise reduction circuit, which has a common mode choke coil configured to reduce common mode noise and normal mode noise contained in DC power, and an inverter circuit, which receives the DC power in which the noise has been reduced. The noise reduction circuit includes: an input-side capacitor and an input-side resistor provided on the input side of the choke coil; an output-side capacitor and an output-side resistor provided on the output side of the choke coil; a first filter circuit that includes the choke coil, the input-side capacitor, and the input-side resistor; and a second filter circuit that includes the choke coil, the output-side capacitor, and the output-side resistor. The first and the second filter circuits reduce leakage noise generated in the inverter circuit.Type: GrantFiled: March 24, 2017Date of Patent: October 8, 2019Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Takao Kawasaki, Yoshiki Nagata, Fumihiro Kagawa, Shunsuke Ambo, Koki Suzuki
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Publication number: 20190305648Abstract: An on-vehicle motor-driven compressor includes a compression unit, an electric motor, and an inverter device. The inverter device includes an inverter circuit and a noise reducer. The noise reducer includes a common-mode choke coil and a smoothing capacitor. The common-mode choke coil includes a loop-shaped core, a first winding wound around the core, a second winding wound around the core, the second winding being spaced apart from and opposed to the first winding, and a loop-shaped conductor that covers the core while extending over the first winding and the second winding. The core includes an exposed portion that is not covered with the conductor. Parts of the conductor that are opposed to each other between the first winding and the second winding are spaced apart from each other.Type: ApplicationFiled: March 27, 2019Publication date: October 3, 2019Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Shunsuke AMBO, Fumihiro KAGAWA, Hiroshi FUKASAKU, Yoshiki NAGATA, Junya KAIDA, Takashi KAWASHIMA, Yoshikazu HAYASHI, Hidehiro KUDO, Takahiro OKAZAKI, Takashi YOSHIDA
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Publication number: 20190305647Abstract: A common-mode choke coil includes a loop-shaped core, a cover made of a conductor covering at least part of the core, a first winding wound around an outer surface of the cover, and a second winding wound around the outer surface of the cover. The cover includes a first region around which the first winding is wound, a second region around which the second winding is wound, and two connection regions that connect the first region and the second region to each other in a circumferential direction. The cover has first and second slits in an inner circumferential surface. The first slit extends such that the first region is non-continuous with respect to a winding direction of the first winding. The second slit extends such that the second region is non-continuous with respect to a winding direction of the second winding.Type: ApplicationFiled: March 27, 2019Publication date: October 3, 2019Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Shunsuke AMBO, Fumihiro KAGAWA
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Publication number: 20190301490Abstract: An on-vehicle motor-driven compressor includes a compression unit, an electric motor, and an inverter device. The inverter device includes an inverter circuit and a noise reducer. The noise reducer includes a common-mode choke coil and a smoothing capacitor. The common-mode choke coil includes a case, a loop-shaped core accommodated in the case, a first winding and a second winding that are wound around the case, and a loop-shaped conductor that covers the core and the case. Parts of the conductor that are opposed to each other between the first winding and the second winding are spaced apart from each other. The case includes two projections that project from an outer surface of the case. The conductor is held by the two projections such that the conductor is spaced apart from the first winding and the second winding.Type: ApplicationFiled: March 27, 2019Publication date: October 3, 2019Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Shunsuke AMBO, Fumihiro KAGAWA, Yoshiki NAGATA
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Patent number: 10277116Abstract: This on-vehicle power conversion apparatus is provided with: a power conversion circuit to which DC power is inputted; and a noise reduction unit that is configured to reduce common-mode noise and normal-mode noise which are included in the DC power and that is provided to the input side of the power conversion circuit. The noise reduction unit is provided with: a core having a first core part and a second core part; a common-mode chalk coil having a first winding wire wound around the first core part and a second winding wire wound around the second coil part; and a smoothing capacitor that constitutes a low-pass filter circuit cooperatively with the common-mode chalk coil. The power conversion apparatus is further provided with a damping unit provided at a position intersecting the magnetic path of a magnetic flux leakage.Type: GrantFiled: March 30, 2017Date of Patent: April 30, 2019Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Atsushi Naito, Fumihiro Kagawa, Yoshiki Nagata, Shunsuke Ambo, Keiji Yashiro, Kazuhiro Shiraishi
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Publication number: 20190089243Abstract: This on-vehicle power conversion apparatus is provided with: a power conversion circuit to which DC power is inputted; and a noise reduction unit that is configured to reduce common- mode noise and normal-mode noise which are included in the DC power and that is provided to the input side of the power conversion circuit. The noise reduction unit is provided with: a core having a first core part and a second core part; a common-mode chalk coil having a first winding wire wound around the first core part and a second winding wire wound around the second coil part; and a smoothing capacitor that constitutes a low-pass filter circuit cooperatively with the common-mode chalk coil. The power conversion apparatus is further provided with a damping unit provided at a position intersecting the magnetic path of a magnetic flux leakage.Type: ApplicationFiled: March 30, 2017Publication date: March 21, 2019Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Atsushi NAITO, Fumihiro KAGAWA, Yoshiki NAGATA, Shunsuke AMBO, Keiji YASHIRO, Kazuhiro SHIRAISHI
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Publication number: 20180194200Abstract: An on-board fluid machine includes a housing configured to allow fluid to flow into the housing, an electric motor accommodated in the housing, and a driver that is supplied with DC power and drives the electric motor. The driver includes a low-pass filter circuit and an inverter circuit. The low-pass filter circuit includes a common mode choke coil and a capacitor. The driver further includes a damping unit located at a position where magnetic field lines produced by the common mode choke coil generate eddy current.Type: ApplicationFiled: January 9, 2018Publication date: July 12, 2018Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Shunsuke AMBO, Fumihiro KAGAWA, Yoshiki NAGATA
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Publication number: 20180198350Abstract: An on-board fluid machine includes a housing configured to allow fluid to flow into the housing, an electric motor accommodated in the housing, and a driver that is supplied with DC power and drives the electric motor. The driver includes a low-pass filter circuit and an inverter circuit. The low-pass filter circuit includes a common mode choke coil and a capacitor. The driver further includes a damping unit located at a position where magnetic field lines produced by the common mode choke coil generate eddy current.Type: ApplicationFiled: January 9, 2018Publication date: July 12, 2018Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Shunsuke AMBO, Fumihiro KAGAWA, Yoshiki NAGATA
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Patent number: 10003241Abstract: A vehicle inverter device is configured to convert DC power to AC power. The vehicle inverter device includes a circuit having switching elements and a noise reducer. The noise reducer is provided on an input side of the circuit and is configured to reduce common mode noise and normal mode noise contained in the DC power. The noise reducer is configured by a common mode choke coil, which includes a core, a first winding wound about a first winding portion of the core, and a second winding wound about a second winding portion of the core.Type: GrantFiled: June 28, 2016Date of Patent: June 19, 2018Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Atsushi Naito, Yoshiki Nagata, Fumihiro Kagawa, Shunsuke Ambo
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Publication number: 20180123546Abstract: An in-vehicle motor-driven compressor includes a housing, a compression portion, an electric motor, and an inverter device. The inverter device includes a low-pass filter circuit, which reduces normal-mode noise included in DC power, and an inverter circuit, which converts the DC power into AC power. The low-pass filter circuit includes a normal-mode coil, which includes a pillar-shaped core extending in one direction and a winding wound around the core and forms an open magnetic circuit. The core includes two end faces in a direction in which the core extends. The inverter device includes a damping portion. The damping portion is arranged at a position where the damping portion is opposed to at least one of the two end faces of the core and an eddy current is generated by magnetic force lines produced in the normal-mode coil.Type: ApplicationFiled: October 19, 2017Publication date: May 3, 2018Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Fumihiro KAGAWA, Shunsuke AMBO, Yoshiki NAGATA
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Publication number: 20170274735Abstract: An in-vehicle inverter device includes a noise reduction circuit, which has a common mode choke coil configured to reduce common mode noise and normal mode noise contained in DC power, and an inverter circuit, which receives the DC power in which the noise has been reduced. The noise reduction circuit includes: an input-side capacitor and an input-side resistor provided on the input side of the choke coil; an output-side capacitor and an output-side resistor provided on the output side of the choke coil; a first filter circuit that includes the choke coil, the input-side capacitor, and the input-side resistor; and a second filter circuit that includes the choke coil, the output-side capacitor, and the output-side resistor. The first and the second filter circuits reduce leakage noise generated in the inverter circuit.Type: ApplicationFiled: March 24, 2017Publication date: September 28, 2017Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Takao KAWASAKI, Yoshiki NAGATA, Fumihiro KAGAWA, Shunsuke AMBO, Koki SUZUKI
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Publication number: 20170012506Abstract: A vehicle inverter device is configured to convert DC power to AC power. The vehicle inverter device includes a circuit having switching elements and a noise reducer. The noise reducer is provided on an input side of the circuit and is configured to reduce common mode noise and normal mode noise contained in the DC power. The noise reducer is configured by a common mode choke coil, which includes a core, a first winding wound about a first winding portion of the core, and a second winding wound about a second winding portion of the core.Type: ApplicationFiled: June 28, 2016Publication date: January 12, 2017Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Atsushi NAITO, Yoshiki NAGATA, Fumihiro KAGAWA, Shunsuke AMBO