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公开(公告)号：US10434842B2
公开(公告)日：2019-10-08
申请号：US15468359
申请日：2017-03-24
发明人： Takao Kawasaki , Yoshiki Nagata , Fumihiro Kagawa , Shunsuke Ambo , Koki Suzuki
摘要： 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.
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公开(公告)号：US11437181B2
公开(公告)日：2022-09-06
申请号：US16829503
申请日：2020-03-25
发明人： Hiroshi Fukasaku , Shunsuke Ambo , Junya Kaida , Yoshiki Nagata , Takashi Kawashima , Kenji Hayakawa , Yoshikazu Hayashi , Atsushi Naito
IPC分类号： H01F27/28 , H02M7/538 , H02M1/12 , H02M7/5387 , H02P27/08 , H02K11/33 , F04D25/06 , H02M1/00
摘要： A metal film includes portions that are opposed to each other and located away from each other between the first winding and the second winding. The metal film includes the first linear part that is thermally coupled to a housing. The average value of electric resistance per unit length in the peripheral direction of the first linear part of the metal film is greater than an average value of electric resistance per unit length of locations other than the first linear part.
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公开(公告)号：US10897183B2
公开(公告)日：2021-01-19
申请号：US16366262
申请日：2019-03-27
发明人： Shunsuke Ambo , Fumihiro Kagawa , Hiroshi Fukasaku , Yoshiki Nagata , Junya Kaida , Takashi Kawashima , Yoshikazu Hayashi , Hidehiro Kudo , Takahiro Okazaki , Takashi Yoshida
摘要： 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.
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公开(公告)号：US11482962B2
公开(公告)日：2022-10-25
申请号：US17028557
申请日：2020-09-22
摘要： An on-vehicle motor-driven compressor includes an inverter device having a noise reducer. The noise reducer includes a common mode choke coil. The common mode choke coil includes an annular core, first and second windings wound around the core, the second winding being spaced apart from and opposed to the first winding, an annular conductor that extends over the first winding and the second winding and covers the core, and an insulating layer located between an inner circumferential surface of the conductor and outer surfaces of the first winding and the second winding. The conductor is tubular and belt-shaped. The core includes an exposed portion that is not covered by the conductor. The insulating layer is tubular and belt-shaped. An entirety of the conductor is arranged within a range between opposite ends of the insulating layer.
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公开(公告)号：US10277116B2
公开(公告)日：2019-04-30
申请号：US16088326
申请日：2017-03-30
发明人： Atsushi Naito , Fumihiro Kagawa , Yoshiki Nagata , Shunsuke Ambo , Keiji Yashiro , Kazuhiro Shiraishi
摘要： 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.
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公开(公告)号：US10003241B2
公开(公告)日：2018-06-19
申请号：US15194726
申请日：2016-06-28
发明人： Atsushi Naito , Yoshiki Nagata , Fumihiro Kagawa , Shunsuke Ambo
CPC分类号： H02K11/02 , H02K11/33 , H02M1/14 , H02M3/155 , H02M7/5387
摘要： 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.
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公开(公告)号：US11611265B2
公开(公告)日：2023-03-21
申请号：US17223527
申请日：2021-04-06
发明人： Kouki Yamamoto , Mikio Yoshida , Kenji Hayakawa , Takuya Sagawa , Yusuke Kinoshita , Shunsuke Ambo , Junya Kaida
摘要： An electric compressor includes a compression part, an electric motor, an inverter device, and a housing. The inverter device includes an inverter circuit, a noise reduction unit, and a circuit board. The noise reduction unit includes a common mode choke coil and a smoothing capacitor. The common mode choke coil includes an annular core, a pair of winding wires, and an annular electrical conductor. The electrical conductor is split into a first metal plate and a second metal plate in a circumferential direction. The first metal plate is thermally coupled to the housing. The second metal plate is electrically connected to the first metal plate. An electrical resistance value of the first metal plate is larger than that of the second metal plate.
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公开(公告)号：US11097592B2
公开(公告)日：2021-08-24
申请号：US16088346
申请日：2017-03-30
发明人： Fumihiro Kagawa , Atsushi Naito , Yoshiki Nagata , Shunsuke Ambo , Keiji Yashiro , Kazuhiro Shiraishi
摘要： An on-board electric compressor that comprises: a housing; a compression unit; an electric motor; and an inverter device. The inverter device comprises: an inverter circuit that converts direct current power to alternating current power; and a noise reduction unit that is provided on an input side of the inverter circuit and that reduces common mode noise and normal mode noise that are included in the direct current power. The noise reduction unit comprises: a common mode choke coil; and a smoothing capacitor that, in cooperation with the common mode choke coil, constitutes a low pass filter circuit. The common mode choke coil has: a core that has a first core part and a second core part; a first winding that is wound around the first core part; and a second winding that is wound around the second core part.
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公开(公告)号：US11025141B2
公开(公告)日：2021-06-01
申请号：US16088362
申请日：2017-03-30
发明人： Fumihiro Kagawa , Atsushi Naito , Yoshiki Nagata , Shunsuke Ambo , Keiji Yashiro , Kazuhiro Shiraishi
摘要： An on-board electric compressor that comprises: a housing; a compression unit; an electric motor; and an inverter device. The inverter device comprises: an inverter circuit that converts direct current power to alternating current power; and a noise reduction unit that is provided on an input side of the inverter circuit and that reduces common mode noise and normal mode noise that are included in the direct current power The noise reduction unit comprises: a common mode choke coil; and a smoothing capacitor that, in cooperation with the common mode choke coil, constitutes a low pass filter circuit. The common mode choke coil has: a core that has a first core part and a second core part; a first winding that is wound around the first core part; and a second winding that is wound around the second core part.
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公开(公告)号：US10707770B2
公开(公告)日：2020-07-07
申请号：US15865349
申请日：2018-01-09
发明人： Shunsuke Ambo , Fumihiro Kagawa , Yoshiki Nagata
摘要： 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.
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