公开(公告)号：US20250105704A1

公开(公告)日：2025-03-27

申请号：US18971405

申请日：2024-12-06

Applicant: DENSO CORPORATION

Inventor： Shohei Nagai ,  Jiro Hayashi

IPC: H02K9/19 ,  H02K5/18 ,  H02K5/20 ,  H02K9/06 ,  H02K11/33

Abstract: An EPU includes a motor device, an inverter device, a unit housing, and a cooling device. The motor device includes a motor and a motor housing. The inverter device includes an inverter and an inverter housing. The motor and the inverter are accommodated in the unit housing. The cooling device includes a refrigerant passage and a refrigerant pump. The refrigerant pump causes the refrigerant to flow to circulate through the refrigerant passage. The unit housing includes a refrigerant fin to dissipate heat of the refrigerant to an outside. The refrigerant fin is provided on a unit outer surface.

公开(公告)号：US08499885B1

公开(公告)日：2013-08-06

申请号：US13766812

申请日：2013-02-14

Applicant: Denso Corporation

Inventor： Takafumi Satou ,  Jiro Hayashi

IPC: B62D5/04

CPC classification number: H02P6/12 ,  B62D5/0409 ,  B62D5/0484 ,  B62D5/0487 ,  H02H7/1227 ,  H02P3/02 ,  H02P29/0241

Abstract: A power transducer failure detection device detects a failure on a power transducer, making a power transducer control device stop driving the power transducer. A first switching control device turns off a first power supply relay of a power supply source switching device and turns on a second power supply relay of the power supply source switching device. While the power transducer stops driving, a motor may rotate due to an external force to generate a regenerative voltage. The regenerative voltage is then regenerated in a battery through a route from the power transducer via the second power supply relay being turned on and a parasitic diode of the first power supply relay. This can protect elements such as switching elements and a smoothing capacitor of the power transducer against a regenerative voltage and prevent the elements from being destroyed or reducing the useful life due to overvoltage.

Abstract translation: 功率传感器故障检测装置检测功率传感器的故障，使功率传感器控制装置停止驱动功率传感器。 第一切换控制装置关闭电源切换装置的第一电源继电器，接通电源切换装置的第二电源继电器。 当功率传感器停止驱动时，电机可能由于外力而旋转，以产生再生电压。 然后，再生电压通过来自功率转换器的路径经由导通的第二电源继电器和第一电源继电器的寄生二极管在电池中再生。 这可以保护诸如功率转换器的开关元件和平滑电容器的元件抵抗再生电压，并且防止元件被破坏或由于过电压而降低使用寿命。

公开(公告)号：US20250083797A1

公开(公告)日：2025-03-13

申请号：US18956811

申请日：2024-11-22

Applicant: DENSO CORPORATION

Inventor： Yuichi TAKEMURA ,  Mariko Hashimoto ,  Shinsuke Kawazu ,  Jiro Hayashi ,  Hideaki Suzuki ,  Keita Fujii

IPC: B64C11/00

Abstract: A lock device can be shifted between a locked state and an unlocked state. The lock device includes a lock pin, a solenoid, and a pressing unit. The lock pin is movable between a locked position where a propeller is locked and an unlocked position where the propeller is not locked. The pressing unit presses the lock pin to the locked position by a mechanical pressing force. The solenoid includes a solenoid coil and a plunger. When the solenoid coil is energized, the plunger moves the lock pin to the unlocked position against the mechanical pressing force.

公开(公告)号：US09018880B2

公开(公告)日：2015-04-28

申请号：US13734293

申请日：2013-01-04

Applicant: Denso Corporation

Inventor： Jiro Hayashi

IPC: H02P25/22 ,  H02P6/12 ,  H02P6/14 ,  H02P29/02

CPC classification number: H02P25/22 ,  H02P29/0241 ,  H02P29/032

Abstract: A first inverter circuit and a second inverter circuit are provided for a first winding set and a second winding set of a motor, respectively, and switch over power supply to the winding sets. A control unit controls operations of the inverter circuits. The control unit detects abnormality in the inverter circuits. The control unit calculates a first value with respect to each drive system based on phase currents of the inverter circuit in each system, calculates a second value based on two values selected from a plurality of first values calculated for each drive system, and detects abnormality of the inverter circuits, which corresponds to the selected first value, when the second value deviates from a predetermined range.

Abstract translation: 分别为电动机的第一绕组和第二绕组组设置第一逆变器电路和第二逆变器电路，并且将绕组的电源切换。 控制单元控制逆变器电路的动作。 控制单元检测逆变器电路的异常。 控制单元基于各系统中的逆变器电路的相电流来计算关于每个驱动系统的第一值，基于从针对每个驱动系统计算的多个第一值中选择的两个值来计算第二值，并且检测异常 当所述第二值偏离预定范围时，所述逆变器电路对应于所选择的第一值。

公开(公告)号：US20240405633A1

公开(公告)日：2024-12-05

申请号：US18799535

申请日：2024-08-09

Applicant: DENSO CORPORATION

Inventor： Mariko HASHIMOTO ,  Hideaki Suzuki ,  Jiro Hayashi

IPC: H02K5/18 ,  B64D33/08 ,  H02K9/06

Abstract: Motor fins are provided to a motor outer peripheral surface of a motor housing. Inverter fins are provided to an inverter outer peripheral surface of an inverter housing. A fin cover covers the motor fins and the inverter fins from a radially outward direction. A cover flow passage is formed between the fin cover and the motor outer peripheral surface and between the fin cover and an inverter outer peripheral surface. The cover flow passage includes a first flow passage and a second flow passage, the motor fins being provided in the first flow passage, the inverter fins being provided in the second flow passage. In the second flow passage, a second air flow having flowed into a second inflow port reaches the inverter fins without passing through the first flow passage.