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    • 1. 发明专利
    • Electric vehicle
    • 电动车
    • JP2012239350A
    • 2012-12-06
    • JP2011108211
    • 2011-05-13
    • Toyota Motor Corpトヨタ自動車株式会社Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • SUGITA MASAYUKITORII KAORUNARUSE MAKOTOMATSUMURA NAOHIDEMIYAUCHI HIROYUKISUGURO TOMOHIROHATTORI YOSHIKUNIKOJIMA TAKASHITSUKADA KOJITAKAHASHI ATSUHIROTANAKA HIROYA
    • H02K5/16
    • Y02T10/641
    • PROBLEM TO BE SOLVED: To provide an electric vehicle which reduces radio noise and the like by reducing the noise loop without adding a noise filter circuit.SOLUTION: An electric vehicle includes: a motor case 50 housing a motor in an interior space; an electric power conversion apparatus converting electric power input from an on-vehicle battery and supplying the electric power to the motor through electric power cables 44, 46; a conductive PCU case housing the electric power conversion apparatus; and a conductive body ground conductor 43 with which the motor case 50 and the PCU case respectively make ground connection. Shield members 48 of the electric cables electrically connect with a case member 52 forming the motor case 50, and a case member 54 makes ground connection with the body ground conductor 43. Then, an insulation sealing member 56 is provided between the case members 52, 54, and a bolt 58 fastening the case members 52, 54 is fastened through an insulation layer 60.
    • 要解决的问题:提供一种通过在不添加噪声滤波器电路的情况下减少噪声环路来降低无线电噪声等的电动车辆。 解决方案:一种电动车辆包括:将电动机容纳在内部空间中的电动机壳体50; 电力转换装置,其转换从车载电池输入的电力并通过电力电缆44,46向电动机供电; 容纳电力转换装置的导电PCU壳体; 以及电动机壳体50和PCU壳体分别与其接地的导电体接地导体43。 电缆的屏蔽构件48与形成电动机壳体50的壳体构件52电连接,壳体构件54与主体接地导体43接地。然后,在壳体构件52之间设置绝缘密封构件56, 54,并且紧固壳体构件52,54的螺栓58通过绝缘层60紧固。版权所有(C)2013,JPO和INPIT
    • 3. 发明专利
    • Noise reduction circuit
    • 噪声减少电路
    • JP2013138562A
    • 2013-07-11
    • JP2011288164
    • 2011-12-28
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所Toyota Motor Corpトヨタ自動車株式会社
    • KOJIMA TAKASHITAKAHASHI ATSUHIROTSUKADA KOJIHATTORI YOSHIKUNITORII KAORUSUGITA MASAYUKI
    • H02M3/28B60L3/00
    • PROBLEM TO BE SOLVED: To provide a noise reduction circuit capable of effectively suppressing high-frequency electromagnetic noise.SOLUTION: A noise reduction circuit includes: a case 26; capacitors Cp and Cn connected between positive-side wiring and negative-side wiring of a power-supply circuit 200 in the case 26 and connected in series to each other; an inductor Lp connected between a connection point of the positive-side wiring and the capacitor Cp and an output terminal Tout; and an inductor Ln connected between a connection point of the negative wiring and the capacitor Cn and a ground point X to the case 26. A connection point A of the capacitor Cp and the capacitor Cn is grounded to the case 26, the output terminal Tout and the ground point X are connected via a capacitor Cb, and a bridge circuit is constituted from the capacitors Cp and Cn and the inductors Lp and Ln.
    • 要解决的问题:提供能够有效地抑制高频电磁噪声的降噪电路。解决方案:噪声降低电路包括:壳体26; 在壳体26中连接在电源电路200的正极配线和负极配线之间的电容器Cp和Cn彼此串联连接; 连接在正极配线的连接点和电容器Cp之间的电感器Lp和输出端子Tout; 以及连接在负引线的连接点和电容器Cn之间的电感器Ln以及与壳体26的接地点X.电容器Cp和电容器Cn的连接点A接地到壳体26,输出端子Tout 并且接地点X经由电容器Cb连接,桥接电路由电容器Cp,Cn以及电感器Lp,Ln构成。
    • 5. 发明专利
    • Switching element device
    • 开关元件设备
    • JP2013149755A
    • 2013-08-01
    • JP2012008338
    • 2012-01-18
    • Toyota Motor Corpトヨタ自動車株式会社Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • TORII KAORUSUGITA MASAYUKISAWAYAMA YOSHIHITOHATTORI YOSHIKUNIKOJIMA TAKASHITSUKADA KOJITAKAHASHI ATSUHIROTANAKA HIROYA
    • H05K1/02
    • PROBLEM TO BE SOLVED: To more appropriately suppress generation of common mode noise due to the switching of a switching element.SOLUTION: When a metal housing 24 for housing four layers substrate including a P layer 34 and an N layer 36 is grounded, inductances of the P layer 34 and the N layer 36 are denoted as "Lp" and "Ln", respectively, and stray capacitances between the P layer 34 and the housing 24 and between the N layer 36 and the housing 24 are denoted as "Cp" and "Cn", respectively, the arrangement of the four layers substrate in the housing 24 is performed with an adjustment of each of distances between the P layer 34 and the housing 24 and between the N layer 36 and the housing 24 so that a relational expression: Ln*Cn-LP*Cp=0 is satisfied, and formation of the P layer 34 and the N layer 36 of the four layers substrate is performed with an adjustment of each surface area of the P layer 34 and the N layer 36. Accordingly, in the equivalent circuit of the structure of a switching element device 20, common mode current caused by switching a switching element can be ideally reduced to a value of zero.
    • 要解决的问题:更适合地抑制由于开关元件的切换而导致的共模噪声的产生。解决方案:当用于容纳包括P层34和N层36的四层基板的金属外壳24接地时, P层34和N层36分别表示为“Lp”和“Ln”,P层34与壳体24之间以及N层36与壳体24之间的杂散电容表示为“Cp” 和“Cn”,通过调整P层34和壳体24之间以及N层36和壳体24之间的距离中的每一个来执行壳体24中的四层基板的布置,使得关系 表达式:Ln * Cn-LP * Cp = 0,并且通过调整P层34和N层36的每个表面积来执行四层基板的P层34和N层36的形成 因此,在开关结构的等效电路中 清洁元件装置20,由切换开关元件引起的共模电流可以理想地减小到零值。
    • 6. 发明专利
    • Electric power conversion apparatus
    • 电力转换装置
    • JP2013034304A
    • 2013-02-14
    • JP2011169047
    • 2011-08-02
    • Toyota Motor Corpトヨタ自動車株式会社Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • TORII KAORUSUGITA MASAYUKISUGURO TOMOHIROTSUKADA KOJIHATTORI YOSHIKUNIKOJIMA TAKASHITAKAHASHI ATSUHIRO
    • H02M3/28
    • PROBLEM TO BE SOLVED: To reduce common-mode noises generated by an electric power conversion apparatus in a simple structure.SOLUTION: A part of a circuit reducing common-mode noises in an electric power conversion apparatus is formed by: (1) a first path 72 which is from a connection part 70P connecting a power cable 12P with a circuit board 14 through an inductor Lp to each of heat sinks 58 at upper arm MOSFETs 32 of switching element pairs; (2) capacitors CpA and CpB for reducing the common-mode noises; (3) a second path 72 which is from a connection part 70N connecting a power cable 12N with the circuit board 14 through an inductor Ln to each heatsink 58 at lower arm MOSFETs 34 of switching element pairs; and (4) capacitors CnA and CnB for reducing the common-mode noises. Each capacitance value is configured to satisfy (CpA+CpB)/(CnA+CnB)=Ln/Lp so that the common-mode noises can be reduced.
    • 要解决的问题:为了以简单的结构减少由电力转换装置产生的共模噪声。 解决方案:电力转换装置中减少共模噪声的电路的一部分通过以下方式形成:(1)第一路径72,其是从连接电力电缆12P与电路板14的连接部分70P通过 电感器Lp耦合到开关元件对的上臂MOSFET 32处的每个散热器58; (2)用于降低共模噪声的电容器CpA和CpB; (3)来自连接部分70N的第二路径72,连接部分70N通过电感器Ln将电力电缆12N与电路板14连接到开关元件对的下臂MOSFET 34处的每个散热器58; 和(4)用于降低共模噪声的电容器CnA和CnB。 每个电容值被配置为满足(CpA + CpB)/(CnA + CnB)= Ln / Lp,使得可以减小共模噪声。 版权所有(C)2013,JPO&INPIT