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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：US10541590B2
公开(公告)日：2020-01-21
申请号：US15473096
申请日：2017-03-29
发明人： Fumihiro Kagawa , Atsushi Naito , Yusuke Kinoshita
摘要： A fluid machine includes a housing including a suction port through which fluid is drawn, an electric motor accommodated in the housing, and a drive device configured to drive the electric motor. The drive device includes a circuit board, a heat-generating component, and a metal member. The circuit board includes a pattern wire. The circuit board is opposed to an outer surface of the housing. The heat-generating component is located between the circuit board and the outer surface of the housing and spaced apart from the circuit board. The heat-generating component generates electromagnetic noise. The metal member is at least partially located between the circuit board and the heat-generating component. The metal member is configured to transmit heat from the heat-generating component to the housing and absorb or block the electromagnetic noise.
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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：US11056262B2
公开(公告)日：2021-07-06
申请号：US16013207
申请日：2018-06-20
发明人： Michitaka Itaya , Toshiaki Oka , Koki Harada , Yukiyasu Yamauchi , Takuma Terui , Takeshi Harasawa , Atsushi Naito , Keiji Yashiro , Kazuhiro Shiraishi
IPC分类号： H01F17/06 , H05K1/02 , H03H7/01 , H01F5/04 , H03H7/09 , H01F27/32 , H01F27/02 , H01F27/28 , H03H1/00 , H03H7/42
摘要： The present disclosure provides an inductive element capable of lowering a Q-value. An inductive element includes a first cover and a second cover covering an annular core, and a first winding and a second winding wound around a region of the core, the first cover and the second cover. The first cover covers a part of an inner circumferential surface of the core, a part of an outer circumferential surface and an end surface on one end side in an axial direction. The second cover covers a part of the inner circumferential surface of the core, a part of the outer circumferential surface an end surface on the other end side in the axial direction.
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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：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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