公开(公告)号：US09692291B2

公开(公告)日：2017-06-27

申请号：US14186255

申请日：2014-02-21

Applicant: NIPPON SOKEN, INC. ,  DENSO CORPORATION

Inventor： Shinji Ohoka ,  Shinya Goto ,  Katsutoyo Misawa ,  Yuuki Takemoto ,  Tougo Yamaguchi

IPC: H04B3/00 ,  H04B15/00 ,  H02M1/14 ,  H02M3/337

CPC classification number: H02M1/14 ,  H02M3/3376

Abstract: A noise filter is assembled to an electric power conversion device and has a metal housing casing and two capacitors connected to an external terminal of the device through which an electric power conversion circuit is connected to an external device. The two capacitors, the housing casing and the external terminal make a current loop. A magnetic flux of an alternating magnetic field generated in a part of the electric power conversion circuit penetrates in a first area and a second area formed in the current loop. A first induced noise current is induced in the current loop when the magnetic flux of the generated magnetic field penetrates in the first area. A second induced noise current is induced in the current loop when the magnetic flux penetrates in the second area so that the first induced noise current flows in a reverse direction to the second induced noise current.

公开(公告)号：US09667149B2

公开(公告)日：2017-05-30

申请号：US14743596

申请日：2015-06-18

Applicant: DENSO CORPORATION

Inventor： Kiyokazu Akiyama ,  Shinji Ohoka ,  Yuuki Takemoto

IPC: H02M1/14 ,  H02M3/28 ,  H02M3/335

CPC classification number: H02M3/285 ,  H02M1/14 ,  H02M3/3353 ,  H02M3/33569

Abstract: An electric power converter apparatus incorporates a plurality of electric power converter circuits having respective output terminals connected in common, with output power being produced from the common output terminals. Each converter circuit uses an identical switching frequency, in executing power conversion based on PWM control of switching by a plurality of switching elements. The switching operations of the respective converter circuits mutually differ in phase, by an amount determined in accordance with the currently applied PWM duty ratio. The phase difference value is predetermined for minimizing the amplitude of specific harmonic frequency components of a ripple current component in the output current from the apparatus.

公开(公告)号：US09647535B2

公开(公告)日：2017-05-09

申请号：US14447118

申请日：2014-07-30

Applicant: DENSO CORPORATION

Inventor： Yuuichi Handa ,  Katsutoyo Misawa ,  Yuuki Takemoto ,  Shotaro Yamasaki ,  Shuji Kurauchi

IPC: H02M1/44 ,  H02M3/24 ,  H02M3/28 ,  H01F27/06

CPC classification number: H02M1/44 ,  H01F27/06 ,  H02M3/24 ,  H02M3/28

Abstract: A power-supply apparatus is provided which includes a transformer, a primary semiconductor unit, a secondary semiconductor unit, and a secondary electronic device. Each of the primary semiconductor unit and the secondary semiconductor units has a plurality of semiconductor devices installed therein. The transformer, the primary semiconductor unit, the secondary semiconductor unit, and the secondary electronic device are electrically joined through connecting conductors. The transformer is laid on the primary semiconductor unit to make a first stack. Similarly, the secondary electronic device is laid on the secondary semiconductor unit. This permits the power-supply apparatus to be reduced in overall size thereof and minimizes adverse effects of electromagnetic noise to ensure the high efficiency in power supply operation.

公开(公告)号：US09584010B2

公开(公告)日：2017-02-28

申请号：US14680209

申请日：2015-04-07

Applicant: DENSO CORPORATION

Inventor： Kenta Hatakenaka ,  Katsutoyo Misawa ,  Yuuichi Handa ,  Yuuki Takemoto

IPC: H02M1/44 ,  H02M3/335 ,  H02M3/28 ,  H02M3/337 ,  H01F27/30 ,  H01F27/28

CPC classification number: H02M1/44 ,  H01F27/2847 ,  H01F27/303 ,  H01F27/306 ,  H02M3/28 ,  H02M3/33569 ,  H02M3/337

Abstract: A power supply apparatus includes a transformer which has a primary coil and a secondary coil, a primary side semiconductor component which configures a primary side circuit connected to a side of the primary coil of the transformer, a secondary side semiconductor component which configures a secondary side circuit connected to a side of the secondary coil of the transformer, a choke coil which is connected to the secondary side semiconductor component, and a base plate on which the transformer, the primary side semiconductor component, the secondary side semiconductor component, and the choke coil are mounted. Any two of the transformer, the primary side semiconductor component, the secondary side semiconductor component, and the choke coil configure a first stacked body stacked in a normal direction of the base plate, and other two of the transformer, the primary side semiconductor component, the secondary side semiconductor component, and the choke coil configure a second stacked body stacked in the normal direction of the base plate. The power supply apparatus has a pair of first lines connecting the primary side semiconductor component and the transformer to each other, and a pair of second lines connecting the transformer and the secondary side semiconductor component to each other. The first lines and the second lines respectively have a pair of first current paths and a pair of second current paths which are arranged so as to be adjacent to each other and are configured so that currents flow in the normal direction of the base plate. At least one of the pair of the second current paths is adjacent to at least one of the pair of the first current paths in a second direction orthogonal to a first direction in which the pair of the first current paths are adjacent to each other. The first current paths and the second current paths adjacent to each other in the second direction are configured so that currents flow therethrough in directions opposite to each other.

公开(公告)号：US20150123645A1

公开(公告)日：2015-05-07

申请号：US14530094

申请日：2014-10-31

Applicant: DENSO CORPORATION

Inventor： Yuuki Takemoto ,  Yuuichi Handa ,  Katsutoyo Misawa ,  Syotarou Yamasaki ,  Syuji Kurauchi ,  Kenta Hatakenaka

IPC: H02M3/145

CPC classification number: H02M3/28 ,  H01F27/08 ,  H01F27/36 ,  H02M7/003

Abstract: A power supply unit includes: a transformer; a primary component that constitutes a primary circuit connected to the transformer; a secondary component that constitutes a secondary circuit connected to the transformer; a choke coil; a base plate including the transformer, the primary component, the secondary component and the choke coil; a metal plate connected to the base plate; and a connecting member connecting the primary component and the transformer. The primary component and the transformer are laminated to constitute a first laminating body. A part of the metal plate is disposed closer to the transformer than the primary component, and the metal plate and the transformer are electrically connected by a ground line. A connection point between the ground line and the metal plate is located closer to the transformer than the primary component.

Abstract translation: 电源单元包括：变压器; 构成连接到变压器的初级电路的主要部件; 构成连接到变压器的次级电路的次级部件; 扼流线圈 包括变压器，主要部件，次要部件和扼流线圈的基板; 连接到基板的金属板; 以及连接主要部件和变压器的连接部件。 主要部件和变压器被层压以构成第一层压体。 金属板的一部分比主要部件更靠近变压器设置，并且金属板和变压器通过接地线电连接。 接地线和金属板之间的连接点比主要部件更靠近变压器。