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公开(公告)号：US11588423B2
公开(公告)日：2023-02-21
申请号：US17073556
申请日：2020-10-19
Applicant: Mitsubishi Electric Corporation
Inventor： Tomonori Yamada , Satoshi Ishibashi , Naoya Abe , Satoshi Wachi
Abstract: An electric-power conversion apparatus has a heat sink in which one side portion out of a pair of side portions that extend in a direction perpendicular to the axial direction of a motor is formed shorter than the other side portion thereof; a lower case to which the heat sink is fixed is fastened to a driving apparatus through the intermediary of fixing portions at the both end portions of each of the pair of side portions of the heat sink or at respective positions in the vicinity of the both end portions of each of the pair of side portions of the heat sink; at least one of a reactor and capacitors is disproportionately disposed to be closer to said one side portion than to said the other side portion of the heat sink.
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公开(公告)号：US11049655B2
公开(公告)日：2021-06-29
申请号：US16254851
申请日：2019-01-23
Applicant: Mitsubishi Electric Corporation
Inventor： Kengo Nishimura , Satoshi Ishibashi , Hidehito Yoshida
Abstract: The present application provides a resin-molded capacitor such that heat generated by a capacitor element can be efficiently dissipated, and a power conversion device. The resin-molded capacitor includes a first bus bar and a second bus bar joined to a first capacitor electrode and a second capacitor electrode respectively of a capacitor element, an insulating member joined to at least one of the first capacitor electrode and the second capacitor electrode or at least one of the first bus bar and the second bus bar, and an electrically conductive member joined to the insulating member.
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公开(公告)号：US10455734B2
公开(公告)日：2019-10-22
申请号：US15622187
申请日：2017-06-14
Applicant: Mitsubishi Electric Corporation
Inventor： Shigenobu Tochiyama , Seiji Haga , Masayoshi Tamura , Satoshi Ishibashi , Shinsuke Idenoue
IPC: H05K7/20 , H01L23/473 , H01L23/367
Abstract: A liquid coolant supplying header is configured on a central portion in the width direction between an upper portion heatsink and a partitioning plate, a liquid coolant discharging header is configured on a central portion in the width direction between a lower portion heatsink and the partitioning plate so as to be parallel to the liquid coolant supplying header, vertical flow channels are formed so as to pass through the partitioning plate vertically on two sides in the width direction so as to be parallel to the liquid coolant supplying header, a liquid coolant distributing structural body is disposed inside the liquid coolant supplying header, and an external shape of the liquid coolant distributing structural body is formed such that flow channel cross-sectional area of the liquid coolant supplying header becomes gradually smaller from an upstream end toward a downstream end.
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公开(公告)号：US10128754B2
公开(公告)日：2018-11-13
申请号：US15450148
申请日：2017-03-06
Applicant: Mitsubishi Electric Corporation
Inventor： Kengo Nishimura , Satoshi Ishibashi , Yuta Komatsu , Satoshi Murakami
Abstract: In a power conversion apparatus including first to fourth semiconductor switching elements connected in series across both terminals of a high voltage-side capacitor, the third and fourth semiconductor switching elements are connected across both terminals of a low voltage-side capacitor via a reactor, and both terminals of the second and third semiconductor switching elements are connected across a charging-discharging capacitor. This charging-discharging capacitor includes a plurality of capacitor elements connected in parallel via a first wiring and a second wiring. Inductance components or capacitance components of the plurality of capacitor elements when viewed from an outflow-inflow portion of the first wiring and an outflow-inflow portion of the second wiring are different from each other such that the charging-discharging capacitor does not have a parallel resonance point in a driving frequency band but has a parallel resonance point in a noise frequency band.
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公开(公告)号：US10693390B2
公开(公告)日：2020-06-23
申请号：US16196049
申请日：2018-11-20
Applicant: Mitsubishi Electric Corporation , Honda Motor Co., Ltd.
Inventor： Kazuki Takegawa , Satoshi Ishibashi , Kazuhiko Otsuka , Masaya Takahashi
IPC: H02M1/32 , H02P1/04 , H02P3/18 , H02P29/68 , G01P5/10 , H02M7/48 , H02P25/24 , H02P25/04 , G01K1/08 , H02P27/06 , H02M7/5387 , H02M3/158 , H02P3/16 , H02P6/14 , G01K17/00
Abstract: In inverter control for supplying power to a motor, a power conversion device includes a temperature sensor for detecting a temperature of the inverter, a voltage sensor for detecting a voltage between terminals of a capacitor that smooths the voltage between terminals between the power source and the inverter, an inverter controller for controlling the inverter, a rotation speed sensor for detecting a rotation speed of the motor, an electric current sensor for detecting electric current supplied to the motor and a discharge determination instruction controller for giving an instruction for discharging electric charges accumulated in the capacitor, in which, control of reducing the rotation speed of the motor and discharge control of the capacitor are performed in accordance with the temperature of the inverter, the rotation speed of the motor and the electric current supplied to the motor.
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Patent Agency Ranking
公开(公告)号：US10512197B2
公开(公告)日：2019-12-17
申请号：US16101571
申请日：2018-08-13
Applicant: Mitsubishi Electric Corporation
Inventor： Satoshi Ishibashi , Yuji Kuramoto , Toshio Watanabe
IPC: H05K7/20 , H02K5/20 , H05K5/06 , H01L23/473
Abstract: A power converting device includes a heat sink including a heat sink base portion on an upper face side of which a depressed portion forming a refrigerant channel is provided and a heat sink upper plate covering the depressed portion of the heat sink base portion, wherein the refrigerant channel is sealed using a channel seal provided in an outer peripheral portion of the heat sink upper plate, an upper case caused to cover an upper face side of the heat sink, a lower case caused to cover a lower face side of the heat sink, and a terminal block forming a waterproofing wall that encloses a power module projecting from an upper face of the heat sink upper plate between the power module on the heat sink upper plate and the channel seal in the upper case.
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公开(公告)号：US10850619B2
公开(公告)日：2020-12-01
申请号：US16177934
申请日：2018-11-01
Applicant: Mitsubishi Electric Corporation , Honda Motor Co., Ltd.
Inventor： Kazuki Takegawa , Satoshi Ishibashi , Kazuhiko Otsuka , Masaya Takahashi , Naotaka Tsuji
Abstract: A power conversion device includes a backup power source as a power source for a discharge controller that discharges electric charges of a capacitor, and an abnormal state in the backup power source or loads is not capable of being dealt with when power is supplied to loads from the backup power source, which makes an output voltage of the backup power source be in an abnormal state. In order to solve the problem, when an abnormality occurs in the backup power source or in loads and the abnormality is detected in power supply from the backup power source, a place where the abnormality occurs is specified. When the specified place where the abnormality occurs is a load, power supply to the load is stopped, thereby preventing the output voltage of the backup power source from being abnormal even when an abnormality occurs in part of power supply destinations.
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公开(公告)号：US10715031B2
公开(公告)日：2020-07-14
申请号：US15992296
申请日：2018-05-30
Applicant: Mitsubishi Electric Corporation
Inventor： Kengo Nishimura , Satoshi Ishibashi , Masahiro Noguchi
Abstract: In order to achieve small noise and small vibration, as well as a small size and a low cost in a power converter including a capacitor module, there is provided a power converter including a power module and a capacitor module. The capacitor module includes: a plurality of capacitor elements each having a flat wound surface; an exterior case; a resin filler; and a restraint point. The exterior case has arranged therein an inclusion serving as a beam in a direction orthogonal to a flat wound surface of at least one capacitor element of the plurality of capacitor elements, and the at least one capacitor element, and the restraint point is arranged substantially in front of the flat wound surface via the inclusion.
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公开(公告)号：US10173530B2
公开(公告)日：2019-01-08
申请号：US15728691
申请日：2017-10-10
Applicant: Mitsubishi Electric Corporation
Inventor： Kazuki Takegawa , Koji Nakajima , Satoshi Ishibashi , Kazuhiko Otsuka
Abstract: When a motor rotation speed is equal to or greater than a predetermined rotation speed when an automobile collision is detected or when power stops, a motor rotation speed reduction control is carried out by an inverter control unit, and when an inter-terminal voltage of a secondary smoothing capacitor drops below a predetermined voltage during the motor rotation speed reduction control, the motor rotation speed reduction control is stopped, whereby induction voltage caused by motor rotation is applied to the secondary smoothing capacitor, the inter-terminal voltage of the secondary smoothing capacitor is raised, and the motor rotation speed reduction control is carried out while keeping the inter-terminal voltage of the secondary smoothing capacitor within an operating voltage range of the inverter control unit.
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公开(公告)号：US09439324B2
公开(公告)日：2016-09-06
申请号：US13960118
申请日：2013-08-06
Applicant: Mitsubishi Electric Corporation
Inventor： Satoshi Ishibashi
IPC: H05K7/20
CPC classification number: H05K7/20254 , H01L2924/0002 , H05K7/20927 , H01L2924/00
Abstract: The passage from a cooling medium inlet to a cooling medium outlet of a cooler includes: an upstream cooling portion and a downstream cooling portion for cooling heat generating bodies; an upstream distribution portion located on the cooling medium inlet side; a downstream distribution portion located on the cooling medium outlet side; a connecting portion for connecting the upstream cooling portion and the downstream cooling portion; and a partition portion for partitioning the upstream cooling portion and the downstream cooling portion, and the upstream distribution portion and the downstream distribution portion. The passage is connected so that the cooling medium flows in order of the upstream distribution portion, the upstream cooling portion, the connecting portion, the downstream cooling portion, and the downstream distribution portion.
Abstract translation: 从冷却介质入口到冷却器的冷却介质出口的通道包括：上游冷却部分和用于冷却发热体的下游冷却部分; 位于所述冷却介质入口侧的上游分配部; 位于冷却介质出口侧的下游分配部; 用于连接上游冷却部分和下游冷却部分的连接部分; 以及用于分隔上游冷却部分和下游冷却部分以及上游分配部分和下游分配部分的分隔部分。 通道连接，使得冷却介质按上游分配部分，上游冷却部分，连接部分，下游冷却部分和下游分配部分的顺序流动。
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