公开(公告)号：US12068706B2

公开(公告)日：2024-08-20

申请号：US17883865

申请日：2022-08-09

Applicant: DENSO CORPORATION

Inventor： Tomohisa Sano

IPC: H02P27/08 ,  H02K9/10 ,  H02K11/25 ,  H02K11/33 ,  H02P6/08

CPC classification number: H02P27/08 ,  H02K9/10 ,  H02K11/25 ,  H02K11/33 ,  H02P6/08

Abstract: A control device is provided which controls an electric drive system, which has a motor that rotates a rotor blade and an inverter circuit that has a switching element and controls the motor and which is installed in a flying body. The control device includes an abnormality occurrence detection unit that detects occurrence of a predetermined abnormality accompanied with an abnormality of temperature of the switching element, and a switching element control unit that controls, when the occurrence of the predetermined abnormality is detected, the switching element so as to reduce loss in the switching element.

公开(公告)号：US11888376B2

公开(公告)日：2024-01-30

申请号：US17154697

申请日：2021-01-21

Applicant: DENSO CORPORATION

Inventor： Ryota Tanabe ,  Yuta Hashimoto ,  Tomohisa Sano ,  Tomoyuki Shinkai

IPC: H02K5/20 ,  H02K11/33 ,  H02K5/22

CPC classification number: H02K5/203 ,  H02K5/20 ,  H02K5/225 ,  H02K11/33

Abstract: A rotary electric machine unit including a rotary electric machine, and an electric power conversion device having a plurality of power modules. The rotary electric machine includes a stator, a rotor, and a housing. The housing includes a housing flow path through which a refrigerant flows. The power modules of the electric power conversion device and the rotary electric machine are configured to be cooled by the refrigerant.

公开(公告)号：US10374523B2

公开(公告)日：2019-08-06

申请号：US16209002

申请日：2018-12-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

Inventor： Shinichi Miura ,  Hiroki Umeda ,  Kenshi Yamanaka ,  Yutaka Morimoto ,  Kazuki Hayashi ,  Hiromi Yamasaki ,  Hitoshi Imura ,  Tomohisa Sano ,  Daisuke Harada ,  Hideaki Tachibana

IPC: H02M7/515 ,  H02M1/08 ,  H05K5/02 ,  B60L11/18 ,  H02M7/483

Abstract: A power conversion device includes a case including an upper case and a lower case; an inverter that is accommodated in a first partial case and is fixed to the first partial case, the first partial case being one of the upper case and the lower case; and a capacitor that is connected to the inverter by a positive electrode bus bar and a negative electrode bus bar, the capacitor being disposed in an internal space of a second partial case that is another of the upper case and the lower case. The first partial case includes a fastening portion that extends from an internal space of the first partial case to the internal space of the second partial case. In the internal space of the second partial case, the capacitor is fastened to the fastening portion.

公开(公告)号：US09219425B2

公开(公告)日：2015-12-22

申请号：US13845657

申请日：2013-03-18

Applicant: DENSO CORPORATION

Inventor： Tomohisa Sano ,  Takahisa Kaneko ,  Kenshiro Hida ,  Kenji Funahashi

IPC: H02M7/00 ,  B60L3/00 ,  H02M1/32

CPC classification number: H02M7/003 ,  B60L3/003 ,  B60L2240/36 ,  H02M2001/322

Abstract: An electric power converter includes a semiconductor module that has a semiconductor element therein, a cooler that cools the semiconductor module, a circuit board provided with a semiconductor control circuit that controls the semiconductor module, a capacitor electrically connected to the semiconductor module, and a quick discharge resistor for discharging an electric charge accumulated in the capacitor. The circuit board is provided with a discharge control circuit that controls a current that flows into the quick discharge resistor. The semiconductor module, the cooler, the capacitor, and the quick discharge resistor are disposed on one major surface of the circuit board.

Abstract translation: 电力转换器包括：半导体元件，其中冷却半导体模块的冷却器;设置有控制半导体模块的半导体控制电路的电路板;与半导体模块电连接的电容器;以及快速 放电电阻器，用于放电蓄积在电容器中的电荷。 电路板上设有一个控制流入快速放电电阻器的电流的放电控制电路。 半导体模块，冷却器，电容器和快速放电电阻器设置在电路板的一个主表面上。

公开(公告)号：US11303219B2

公开(公告)日：2022-04-12

申请号：US16897534

申请日：2020-06-10

Applicant: DENSO CORPORATION

Inventor： Takashi Kashiwazaki ,  Tomohisa Sano

IPC: H02M7/48 ,  H02M7/64 ,  H02K11/33 ,  H02M7/483

Abstract: A power conversion apparatus is provided in a rotary electric machine, converting a power between a DC power source and the rotary electric machine having a multiphase winding. The power conversion apparatus includes: a plurality of switching modules each having a switching element for performing switching to control a current direction of a current flowing from the DC power source to the winding; a plurality of capacitor modules each having a capacitor that suppresses high frequency oscillation occurring on the current due to the switching operation; a positive side conductor connected to a positive electrode of the DC power source; and a negative side conductor connected to a negative electrode of the DC power source.

公开(公告)号：US12176843B2

公开(公告)日：2024-12-24

申请号：US17963418

申请日：2022-10-11

Applicant: DENSO CORPORATION

Inventor： Tomohisa Sano

IPC: B60L53/14 ,  B64D27/24 ,  B64D31/00 ,  H02J7/14 ,  H02P9/02 ,  H02P29/60 ,  B64C29/00

Abstract: Disclosed is a control apparatus for an electric power generation system. The electric power generation system is configured to generate electric power and thereby charge a secondary battery that is an electric power source of a motor included in an electric drive system. The electric drive system further includes an inverter circuit for driving the motor and a power transmission unit for transmitting electric power from the secondary battery to the inverter circuit. The control apparatus includes a temperature acquisition unit and a power generation control unit. The temperature acquisition unit is configured to acquire a temperature of the power transmission unit. The power generation control unit is configured to control the electric power generation system to generate electric power and thereby charge the secondary battery when the temperature of the power transmission unit acquired by the temperature acquisition unit is higher than or equal to a predetermined threshold temperature.

公开(公告)号：US11967867B2

公开(公告)日：2024-04-23

申请号：US17156903

申请日：2021-01-25

Applicant: DENSO CORPORATION

Inventor： Tomohisa Sano ,  Yuki Takahashi ,  Ryota Tanabe ,  Yuta Hashimoto ,  Wataru Funatsu ,  Norihiro Hayashi

IPC: H02K5/20 ,  B60K7/00 ,  H02K1/2791 ,  H02K5/22 ,  H02K7/00 ,  H02K11/33 ,  H02K21/22

CPC classification number: H02K11/33 ,  B60K7/0007 ,  H02K1/2791 ,  H02K5/20 ,  H02K5/203 ,  H02K5/225 ,  H02K7/006 ,  H02K21/22 ,  B60K2007/0092

Abstract: A rotating electric machine includes: a field element that includes a magnet portion that includes a plurality of magnetic poles; an armature that includes an armature winding of multiple phases; and a power converter that is electrically connected to the armature winding.
The rotating electric machine also includes: a plurality of electrical components that configure the power converter; and a housing member that includes a cylindrical portion that is provided on a radially inner side of a magnetic circuit portion that includes the magnet portion and the armature winding, and to which the plurality of electrical components are disposed. The cylindrical portion is provided with a coolant passage through which a coolant flows. The plurality of electrical components are arranged in the housing member on a radially inner side of the cylindrical portion, in a circumferential direction along the cylindrical portion.

公开(公告)号：US10749437B2

公开(公告)日：2020-08-18

申请号：US16393231

申请日：2019-04-24

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masaru Miyazaki ,  Tomohisa Sano ,  Kentaro Hirose

IPC: H02M7/00 ,  H02M3/158 ,  H02M1/32 ,  H02M7/5387

Abstract: A power conversion device has semiconductor modules, a cooling unit, a capacitor module, a discharge resistance substrate, a control circuit substrate and a casing. The semiconductor modules from a power conversion circuit. The capacitor module is electrically connected to the semiconductor module. The discharge resistance is arranged on the discharge resistance substrate, and electrically discharges the capacitor module. The control circuit substrate controls operation of the semiconductor modules. The casing accommodates the semiconductor module, the cooling unit, the capacitor module, the discharge resistance substrate and the control circuit substrate. The discharge resistance substrate is arranged between an outer wall surface of the capacitor module and the control circuit substrate and arranged in a direction perpendicular to the control circuit substrate so that the discharge resistance substrate is separated in position from the outer wall surface of the capacitor module and the control circuit substrate.

公开(公告)号：US10469020B2

公开(公告)日：2019-11-05

申请号：US15494839

申请日：2017-04-24

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomohisa Sano ,  Yuu Yamahira ,  Yoshihito Mizuno

IPC: H02P29/00 ,  H02P29/68 ,  H02M7/5387 ,  H02P27/06 ,  H05K7/20 ,  H02M3/158 ,  H02M1/088 ,  H02M1/00 ,  H02M1/32

Abstract: A power conversion apparatus includes a power conversion circuit and a control unit. The power conversion circuit converts electric power supplied from a power supply and outputs the converted electric power. The control unit controls the power conversion circuit. The power conversion circuit has at least one phase that is configured as a parallel-connection phase in which two semiconductor elements are connected in parallel to each other in each of an upper arm connected to a high potential-side wiring of the power supply and a lower arm connected to a low potential-side wiring of the power supply. The control unit detects temperature information related to element temperatures of all of the plurality of semiconductor elements of a target arm that is either of the upper arm and the lower arm of the parallel-connection phase, and performs overheating protection control of the power conversion circuit based on the detected temperature information.

公开(公告)号：US10291149B2

公开(公告)日：2019-05-14

申请号：US16065876

申请日：2016-11-04

Applicant: DENSO CORPORATION

Inventor： Kengo Mochiki ,  Yuu Yamahira ,  Tomohisa Sano ,  Yohei Kondo

IPC: H02M7/5387 ,  H01L23/367 ,  H02P27/06 ,  H02M7/00

Abstract: A power converter is provided with semiconductor devices, a capacitor, a positive bus bar, and a negative bus bar. The negative bus bar includes a negative side body and a plurality of negative side branches. The negative side branches include an interposed negative side branch interposed between two positive side branches connected to the upper arm semiconductor devices that belong to the same semiconductor device group as the lower arm semiconductor devices connected to the negative side branches, and include an end negative side branch that is not interposed between two positive side branches. The self-inductance of the end negative side branch is smaller than the self-inductance of the interposed negative side branch.