公开(公告)号：US09628004B2

公开(公告)日：2017-04-18

申请号：US15022321

申请日：2014-08-22

Applicant: DENSO CORPORATION

Inventor： Koji Sakai

IPC: H02P1/04 ,  H02P6/14 ,  H02P6/18 ,  H02P27/06 ,  H02P6/06 ,  H02K9/20 ,  H02P29/68

CPC classification number: H02P6/14 ,  B60L1/00 ,  B60L15/08 ,  B60L2210/40 ,  B60L2240/525 ,  H02K9/20 ,  H02M7/5395 ,  H02P6/06 ,  H02P6/18 ,  H02P27/06 ,  H02P27/085 ,  H02P29/68

Abstract: A motor drive device includes: an inverter circuit that has three switching elements corresponding to three phases of a three-phase motor coil, converts a DC applied voltage of a power source to an AC voltage by a PWM, and output the AC voltage to the motor coil; a voltage detection device for the DC applied voltage; and a control device that controls the PWM. The control device selects a first modulation method, for fixing the on/off-state of a part of the switching elements and for switching the on/off-state of the other part of the switching elements, or a second modulation method, for switching the on/off-state of the switching elements corresponding to three phases. The control device switches from the first modulation method to the second modulation method when the DC applied voltage is equal to or greater than a predetermined voltage, and the first modulation method is selected.

公开(公告)号：US11524550B2

公开(公告)日：2022-12-13

申请号：US16590563

申请日：2019-10-02

Applicant: DENSO CORPORATION

Inventor： Koji Sakai

IPC: B60H1/00 ,  F24F11/30 ,  B60W40/02 ,  G05D1/02 ,  F24F130/20

Abstract: An air conditioning control device includes: a passenger determination unit that determines whether a passenger is in a self-driving vehicle; a travel determination unit that determines a traveling state of the self-driving vehicle; and a light blocking control unit that executes a light blocking air conditioning control for a vehicle cabin by operating a light blocking device to adjust solar radiation into the vehicle cabin from a window of the self-driving vehicle when the passenger determination unit and the travel determination unit determine that the self-driving vehicle is in an unmanned traveling condition.

公开(公告)号：US10899194B2

公开(公告)日：2021-01-26

申请号：US16675057

申请日：2019-11-05

Applicant: DENSO CORPORATION

Inventor： Koji Sakai ,  Shinsuke Konishi ,  Hiromitsu Maehata

IPC: B60H1/00 ,  B60N2/00

Abstract: An air-conditioning control apparatus for a vehicle capable of unmanned driving includes a determining section that is configured to determine whether an occupant is in the vehicle and an output section that is configured to execute an air-conditioning control based on a determination result by the determining section. The output section is configured to execute the air-conditioning control based on ride schedule information indicating a length of time until an occupant rides in the vehicle when the vehicle is determined to be in an unmanned state.

公开(公告)号：US10897185B2

公开(公告)日：2021-01-19

申请号：US15514060

申请日：2015-10-06

Applicant: DENSO CORPORATION

Inventor： Koji Sakai

IPC: H02K11/33 ,  H02K11/30 ,  F04B39/00 ,  H02K15/00 ,  F04B35/04 ,  F04C29/04 ,  H02K9/19 ,  H05K7/20 ,  H02K9/22 ,  H02K15/12 ,  F04C23/00 ,  F04C29/00 ,  F04D25/06

Abstract: An electric device includes a case, an electric component that is provided in the case and has a main body section and a lead terminal extending from the main body section, the main body section being supported on the case, a circuit board that is provided in the case and has a connecting hole through which the lead terminal is inserted, and a guide member that has a guide hole positioned relative to the connecting hole, the lead terminal being disposed to penetrate through the guide hole.

公开(公告)号：US10767650B2

公开(公告)日：2020-09-08

申请号：US15741166

申请日：2016-06-23

Applicant: DENSO CORPORATION

Inventor： Koji Sakai

IPC: F04C29/00 ,  F04C28/06 ,  H02P27/06 ,  H02P6/20 ,  H02P27/08 ,  H02P29/40 ,  H02P29/68 ,  B60H1/00 ,  F04C28/08 ,  F04C28/28 ,  F04C18/02

Abstract: A drive device of a compressor, including an inverter circuit formed of a plurality of switching elements, a drive unit that switches the switching elements, a determination unit that, when the compression mechanism restarts, determines whether a pressure difference of the compression mechanism is equal to or above a predetermined value, a restart unit that sets a number of times that the switching elements are switched per unit time during an initial predetermined period when the compression mechanism begins to restart and controls the drive unit, where the restart unit sets the number of times that the switching elements are switched per unit time to be lower when the determination unit determines that the pressure difference is equal to or above the threshold as compared to when the determination unit determines that the pressure difference is less than the threshold.

公开(公告)号：US10273958B2

公开(公告)日：2019-04-30

申请号：US14896686

申请日：2014-07-29

Applicant: DENSO CORPORATION

Inventor： Koji Sakai

IPC: F04C29/04 ,  F04B35/04 ,  F04B49/02 ,  F04B49/06 ,  F04C18/344 ,  F04C28/06 ,  F04C28/08 ,  F04C29/00 ,  F04C28/28 ,  F04C18/02

Abstract: A motor-driven compressor includes: a compression mechanism; an electric motor that drives the compression mechanism; a driver circuit unit disposed at a position to be cooled by refrigerant drawn by the compression mechanism; a temperature detection unit that detects a temperature of the driver circuit unit; and a motor control device disposed in the driver circuit unit to control the motor. The motor control device stores a predetermined drive pattern corresponding to a temperature characteristic of the driver circuit unit after starting the motor. When the temperature detected by the temperature detection unit at a time of starting the motor is higher than or equal to a predetermined temperature, the motor control device performs a limit drive control according to the predetermined drive pattern regardless of a drive state command to the motor.

公开(公告)号：US10158318B2

公开(公告)日：2018-12-18

申请号：US15325582

申请日：2015-08-03

Applicant: DENSO CORPORATION

Inventor： Shinji Nakamoto ,  Koji Sakai

IPC: H02P8/36 ,  H02P29/024 ,  H02P23/00 ,  B60L1/00 ,  H02P27/06 ,  H02J7/00 ,  H02P21/02 ,  H02P21/22 ,  H02P29/032

Abstract: In a control device controlling a drive circuit that drives an in-vehicle electric motor based on an output voltage of a DC power source, a capacitor for stabilizing the output voltage is disposed between the DC power source and the drive circuit, and a relay switch is disposed between the DC power source and the capacitor. The control device includes: an anomaly determining device that determines whether an anomaly occurs in a vehicle; and a discharge control device that controls the drive circuit to generate a torque at the electric motor based on an output voltage of the capacitor in a state where the relay switch disconnects between the DC power source and the capacitor when the anomaly determining device determines that the anomaly occurs in the vehicle.

公开(公告)号：US20150292511A1

公开(公告)日：2015-10-15

申请号：US14442038

申请日：2013-10-08

Applicant: DENSO CORPORATION

Inventor： Koji Sakai

IPC: F04D25/06 ,  H05K7/20

Abstract: A high voltage electric device attached to a cooling unit includes heating components, an electric circuit board, a case, and an insulating member. The heating components are used at high voltage and are different in size. The heating components are fixed via lead wires respectively to the electric circuit board. The case accommodates the heating components and the electric circuit board. The insulating member seals the heating components and the electric circuit board in the case. An outermost peripheral surface of the insulating member on the cooling unit-side cooled by refrigerant is referred to as a reference surface. Respective shortest distances from the reference surface to the heating components are the same as each other. An electric compressor includes the high voltage electric device, an electric motor that is operated by electric power supplied by the high voltage electric device, and a compression mechanism that is driven by the electric motor and is applied to a refrigeration cycle. The cooling unit is cooled by the refrigerant drawn into the compression mechanism.

Abstract translation: 连接到冷却单元的高压电气装置包括加热部件，电路板，壳体和绝缘部件。 加热部件在高电压下使用，尺寸不同。 加热部件通过引线分别固定在电路板上。 这种情况适用于加热部件和电路板。 绝缘构件将壳体中的加热部件和电路板密封。 将由制冷剂冷却的冷却单元侧的绝缘构件的最外周面称为基准面。 从参考表面到加热部件的相应最短距离彼此相同。 电动压缩机包括高压电气装置，由高压电气装置供电的电动机和由电动机驱动并应用于制冷循环的压缩机构。 冷却单元被吸入压缩机构的制冷剂冷却。