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公开(公告)号：US20180202442A1
公开(公告)日：2018-07-19
申请号：US15744184
申请日：2016-07-28
Applicant: DENSO CORPORATION
Inventor： Shinji NAKAMOTO , Koji SAKAI , Akihiro IMURA , Akitomo YAMANAKA
Abstract: A controller that controls an electric compressor, which is mounted to a vehicle and configures a two-stage compression refrigeration cycle device, has a deceleration section, an operation stop section, and a restart section. The deceleration section reduces a rotational speed of an electric motor by controlling an AC current which is output to the electric motor, when a two-stage compression mode, in which an intermediate-pressure refrigerant flows into the electric compressor from an intermediate-pressure port, is performed and an operation stop request to stop the electric compressor is made. The operation stop section stops the electric motor after the deceleration section reduces the rotational speed of the electric motor. The restart section restarts the electric compressor when the operation stop request is canceled after the operation stop section stops the electric compressor.
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公开(公告)号：US20170163201A1
公开(公告)日：2017-06-08
申请号：US15325582
申请日：2015-08-03
Applicant: DENSO CORPORATION
Inventor： Shinji NAKAMOTO , Koji SAKAI
IPC: H02P29/024 , B60L1/00 , H02P27/06
CPC classification number: H02P29/024 , B60L1/003 , H02J7/0065 , H02P21/02 , H02P21/22 , H02P23/00 , H02P27/06 , 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.
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公开(公告)号：US20160303948A1
公开(公告)日：2016-10-20
申请号：US15037795
申请日：2014-11-07
Applicant: DENSO CORPORATION
Inventor： Koji SAKAI , Tomoyuki SUMI
IPC: B60H1/32
CPC classification number: B60H1/3225 , B60H1/3222 , B60H2001/3266 , B60H2001/3292 , B60L1/003 , B60L3/0023 , B60L3/04 , B60L11/1803 , B60L11/1868 , B60L15/007 , B60L2210/12 , B60L2220/14 , B60L2220/16 , B60L2240/36 , B60L2240/525 , B60L2240/527 , B60L2240/529 , B60L2240/545 , B60L2240/547 , B60L2240/549 , B60L2270/20 , Y02T10/644 , Y02T10/645 , Y02T10/7005 , Y02T10/7066 , Y02T10/7233
Abstract: An onboard electric system includes a drive circuit that drives an electric motor based on an output voltage of a direct current power supply; a first smoothing capacitor; a drive signal generator; a first discharge resistor that is connected between a positive electrode and a negative electrode of the first smoothing capacitor; a first discharge switcher that is connected in series to the first discharge resistor between the positive electrode and the negative electrode, and releases or makes a connection between the positive electrode and the negative electrode; and an off-signal generator that outputs an off signal to the first discharge switcher. The first discharge switcher is provided by a switcher of a normally-ON type that makes the connection between the positive electrode and the negative electrode through the first discharge resistor in a period other than a period while the off-signal generator provides the off signal.
Abstract translation: 车载电气系统包括基于直流电源的输出电压来驱动电动机的驱动电路; 第一平滑电容器; 驱动信号发生器; 连接在所述第一平滑电容器的正极和负极之间的第一放电电阻; 第一放电切换器，与正极和负极之间的第一放电电阻串联连接，并且释放或形成正极和负极之间的连接; 以及向第一放电切换器输出关闭信号的断开信号发生器。 第一放电切换器由常开型的切换器提供，在断开信号发生器提供断开信号的同时，在除了周期之外的周期内通过第一放电电阻器进行正电极和负电极之间的连接。
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公开(公告)号：US20200248681A1
公开(公告)日：2020-08-06
申请号：US15774333
申请日：2016-10-25
Applicant: DENSO CORPORATION
Inventor： Koji SAKAI
Abstract: An inverter is disposed at a position on the upstream side relative to a compression mechanism along the flow of a refrigerant and the position cooled by the refrigerant. A motor is disposed at a position heated by the refrigerant compressed by the compression mechanism. A control device changes an upper limit value of a driving current supplied to the motor on the basis of at least one of first information relating to the temperature of the motor or second information relating to the temperature of the inverter.
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公开(公告)号：US20200070627A1
公开(公告)日：2020-03-05
申请号：US16675081
申请日：2019-11-05
Applicant: DENSO CORPORATION
Inventor： Koji SAKAI , Yasuhiro SEKITO
Abstract: An air-conditioning control ECU is an air-conditioning control apparatus mounted in an automated driving vehicle, and includes an occupant determining section that determines whether an occupant is in the automated driving vehicle, and a window operation controlling section that executes a window operation air-conditioning control for performing cabin air-conditioning when a determination result of the occupant determining section indicates the automated driving vehicle is in an unmanned traveling state.
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Patent Agency Ranking
公开(公告)号：US20190078812A1
公开(公告)日：2019-03-14
申请号：US15762771
申请日：2016-09-05
Applicant: DENSO CORPORATION
Inventor： Teruaki OHYAMA , Koji SAKAI , Yuuji KAMIYA , Tomoyuki SUMI
Abstract: An electric compressor includes a compression portion discharging a high pressure refrigerant by compressing a low-pressure drawn refrigerant, an electric motor driving the compression portion with a rotation of a rotor, a motor drive circuit driving the electric motor, an intermediate pressure port through which an intermediate pressure refrigerant is introduced into the compression portion, and a controller performing a rotation control of the rotor. When the controller stops the electric motor in a two-step compression mode in which the intermediate pressure refrigerant is introduced into the compression portion, the controller stops the rotor rotating by performing short-circuit braking on the electric motor and then fixes a rotational position of the rotor at a predetermined rotational position by performing direct current excitation on the electric motor.
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公开(公告)号：US20180003179A1
公开(公告)日：2018-01-04
申请号：US15542838
申请日：2016-01-27
Applicant: DENSO CORPORATION
Inventor： Shinji NAKAMOTO , Koji SAKAI , Yuji KAMIYA
CPC classification number: F04C29/047 , F04B35/04 , F04B39/00 , F04B39/06 , F04B39/121 , F04C18/356 , F04C29/0085 , F04C29/045 , F04C2240/30 , F04C2240/40 , F04C2240/403 , F04C2240/603 , F04C2240/808
Abstract: An electric compressor includes a compression portion that compresses and discharges a drawn fluid, and a motor of the compression portion. The electric compressor includes an actuator that includes multiple electronic components and drives the motor, a first casing that accommodates the actuator, and a second casing that accommodates the compression portion and the motor. The second casing includes a discharge passage in which a high-temperature fluid compressed by the compression portion flows. A limiting structure that limits the heat transfer from the fluid flowing in the discharge passage is provided between one of the electronic components and the discharge passage. The limiting structure includes a seat portion that defines a gap between a bottom surface of the one of the plurality of electronic components and the discharge passage. According to the electric compressor, the heat transfer from the fluid to the electronic components can be limited.
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公开(公告)号：US20150338143A1
公开(公告)日：2015-11-26
申请号：US14654267
申请日：2013-12-05
Applicant: DENSO CORPORATION
Inventor： Koji SAKAI , Hiroki ISHII
CPC classification number: F25B31/026 , F04B17/03 , F04B35/04 , F04B39/0094 , F04C18/0223 , F04C23/008 , F04C29/0085 , F04C2240/808 , F25B31/023 , H02K7/14 , H02K11/33 , H02M7/003
Abstract: A motor unit, which drives a compressor unit, includes a stator, which generates a rotating magnetic field, and a rotor, which is rotated about a rotational axis by the rotating magnetic field at an inner side of the stator. A drive circuit unit is placed at the inner side of the stator such that a position of the drive circuit unit in a direction of the rotational axis overlaps with the stator.
Abstract translation: 驱动压缩机单元的马达单元包括产生旋转磁场的定子和通过定子内侧的旋转磁场围绕旋转轴旋转的转子。 驱动电路单元设置在定子的内侧，使得驱动电路单元在旋转轴的方向上的位置与定子重叠。
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公开(公告)号：US20210142594A1
公开(公告)日：2021-05-13
申请号：US17157528
申请日：2021-01-25
Applicant: DENSO CORPORATION
Inventor： Koji SAKAI
IPC: G07C5/08 , G01M17/007 , G07C5/00
Abstract: An automatic daily inspection system that automatically performs a daily inspection of an automobile includes an automatic daily inspection apparatus mounted on the automobile. The automatic daily inspection apparatus is configured to perform a daily inspection on the automobile at a predetermined point of time, and transmit a diagnosis result of the daily inspection to a transceiver held by a manager who manages the automobile.
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公开(公告)号：US20200062079A1
公开(公告)日：2020-02-27
申请号：US16675032
申请日：2019-11-05
Applicant: DENSO CORPORATION
Inventor： Koji SAKAI
IPC: B60H1/00
Abstract: An air-conditioning control apparatus is mounted in a vehicle that is capable of unmanned travelling. The apparatus has a determining section and an output section. The determining section determines whether an occupant is in the vehicle and whether the vehicle is traveling. The output section performs an air-conditioning control including temperature adjusting using a radiator through heat exchange with air outside the vehicle. The output section performs the air-conditioning control when the vehicle is in an unmanned state and a travelling state, and refrains from performing the air-conditioning control when the vehicle is in the unmanned state and a stop state.
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