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公开(公告)号：US20200039321A1
公开(公告)日：2020-02-06
申请号：US16590563
申请日：2019-10-02
Applicant: DENSO CORPORATION
Inventor： Koji SAKAI
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.
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公开(公告)号：US20180187681A1
公开(公告)日：2018-07-05
申请号：US15741166
申请日：2016-06-23
Applicant: DENSO CORPORATION
Inventor： Koji SAKAI
IPC: F04C28/06 , H02P29/40 , H02P27/08 , H02P29/68 , F04C18/02 , F04C28/08 , F04C28/28 , F04C29/04 , F04C29/00 , B60H1/00
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.
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公开(公告)号：US20170369061A1
公开(公告)日：2017-12-28
申请号：US15541259
申请日：2016-01-21
Applicant: DENSO CORPORATION
Inventor： Tomoyuki SUMI , Koji SAKAI , Yuuji KAMIYA , Hideyuki MORITA
CPC classification number: B60W30/146 , B60L1/00 , B60L15/20 , B60L2240/421 , B60L2240/429 , B60L2270/142 , F04B49/06 , F04B49/065 , H02P23/14 , H02P27/06 , H02P29/00 , H02P2205/07
Abstract: A CPU drives an inverter based on a command rotation speed that is inputted from a higher level ECU at a predetermined update interval. The CPU acquires an actual rotation speed of the electric motor, and calculates an accelerated rate and a decelerated rate based on the update interval and a difference between the actual rotation speed and the command rotation speed such that the actual rotation speed changes without reaching the command rotation speed and becoming constant before an end of the update interval. The CPU drives the inverter such that the electric motor rotates at the calculated rate.
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公开(公告)号：US20170302139A1
公开(公告)日：2017-10-19
申请号：US15514060
申请日：2015-10-06
Applicant: DENSO CORPORATION
Inventor： Koji SAKAI
CPC classification number: H02K11/33 , F04B35/04 , F04B39/00 , F04C23/008 , F04C29/0085 , F04C29/047 , F04C2240/803 , F04D25/0693 , H02K9/19 , H02K9/22 , H02K11/30 , H02K15/00 , H02K15/12 , H05K7/20354 , H05K7/20881
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.
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公开(公告)号：US20160294309A1
公开(公告)日：2016-10-06
申请号：US15037763
申请日：2015-02-06
Applicant: DENSO CORPORATION
Inventor： Koji SAKAI
CPC classification number: H02P6/14 , B60L1/003 , B60L3/003 , B60L11/14 , B60L11/1861 , B60L15/007 , B60L15/12 , B60L15/20 , B60L2210/10 , B60L2210/40 , B60L2220/14 , B60L2240/421 , B60L2240/423 , B60L2240/525 , B60L2270/46 , H02P27/08 , H02P31/00 , Y02T10/644 , Y02T10/645 , Y02T10/70 , Y02T10/7005 , Y02T10/7044 , Y02T10/705 , Y02T10/7077 , Y02T10/7216 , Y02T10/7241 , Y02T10/7275
Abstract: A motor drive device includes: an inverter circuit having a smoothing capacitor; a drive circuit portion which outputs an operation signal to the inverter circuit; a control portion which controls the drive circuit portion; and an operating voltage generation portion which supplies power to the drive circuit portion and the control portion by generating an operating voltage for the drive circuit portion and the control portion. The inverter circuit converts a DC voltage from a first power supply to an AC voltage and outputs the AC voltage to a multi-phase motor coil. The control portion outputs a signal to the drive circuit portion according to a command value from a high-level control device operating on power from a second power supply outputting a voltage lower than the first power supply. The operating voltage generation portion is capable of generating the operating voltage using power fed from either of the first power supply and the second power supply.
Abstract translation: 电动机驱动装置包括：具有平滑电容器的逆变器电路; 驱动电路部，向逆变器电路输出动作信号; 控制部，其控制所述驱动电路部; 以及通过产生用于驱动电路部分和控制部分的工作电压向驱动电路部分和控制部分供电的工作电压产生部分。 逆变器电路将来自第一电源的DC电压转换为AC电压，并将AC电压输出到多相电动机线圈。 控制部根据从输出低于第一电源电压的第二电源供电的高电平控制装置的指令值向驱动电路部输出信号。 工作电压产生部分能够使用从第一电源和第二电源中的任一个馈送的电力产生工作电压。
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Patent Agency Ranking
公开(公告)号：US20160233801A1
公开(公告)日：2016-08-11
申请号：US15022321
申请日：2014-08-22
Applicant: DENSO CORPORATION
Inventor： Koji SAKAI
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.
Abstract translation: 电动机驱动装置包括：具有对应于三相电动机线圈的三相的三个开关元件的逆变器电路，通过PWM将电源的直流施加电压转换为交流电压，并将交流电压输出到 电机线圈; 用于DC施加电压的电压检测装置; 以及控制PWM的控制装置。 控制装置选择第一调制方法，用于固定开关元件的一部分的导通/截止状态，以及用于切换开关元件的其他部分的导通/截止状态或第二调制方法，用于切换 开关元件的开/关状态对应于三相。 当DC施加电压等于或大于预定电压时，控制装置从第一调制方法切换到第二调制方法，并且选择第一调制方法。
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公开(公告)号：US20250030320A1
公开(公告)日：2025-01-23
申请号：US18907869
申请日：2024-10-07
Applicant: DENSO CORPORATION
Inventor： Toshitada SANZEN , Koji SAKAI , Yuki IKEDA
Abstract: A filter component is adapted to an electrical system having first and second electric apparatuses. The filter component has a resistive element and first, second, third and fourth windings. The first electric apparatus has a power terminal being a first power terminal and another power terminal being a second power terminal. The second electric apparatus has a power terminal being a third power terminal and another power terminal being a fourth power terminal. The first and second windings are connected in series, and the third and fourth windings are connected in series. The first and third windings form a common-mode inductor suppressing a common-mode noise current. The first to fourth windings form a differential-mode inductor suppressing a differential-mode noise current. The resistive element is connected in parallel across at least one of the first to fourth windings.
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公开(公告)号：US20240396113A1
公开(公告)日：2024-11-28
申请号：US18789789
申请日：2024-07-31
Applicant: DENSO CORPORATION
Inventor： Koji SAKAI , Toshitada Sanzen
IPC: H01M10/625 , B60L1/00 , B60L58/27 , H01M10/613 , H01M10/615 , H01M10/637 , H01M10/6569
Abstract: A high-voltage auxiliary system for a vehicle includes a high-voltage battery, a temperature raising device, a high-voltage auxiliary machine, and an electronic control device. The temperature raising device is connected to the high-voltage battery via an electric circuit and raises the temperature of the high-voltage battery by utilizing fluctuations in voltage and current. The high-voltage auxiliary machine is electrically connected to the electric circuit and is driven by power supplied from the high-voltage battery. The electronic control device suppresses the operating state of the high-voltage auxiliary machine so that a fluctuation in voltage and current due to the operation of the temperature raising device and the operation of the high-voltage auxiliary machine is less than an allowable value of the high-voltage auxiliary machine.
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公开(公告)号：US20180175766A1
公开(公告)日：2018-06-21
申请号：US15576317
申请日：2016-05-19
Applicant: DENSO CORPORATION
Inventor： Koji SAKAI , Akitomo YAMANAKA
CPC classification number: H02P23/009 , F25B13/00 , F25B31/026 , H02P3/18 , H02P27/08 , H02P29/68
Abstract: A motor driving device for a motor having a stator and a rotor rotationally driven by an input of an AC voltage includes: an inverter circuit having multiple units corresponding to multiple phases respectively, each unit having a pair of a switching element and a reflux diode connected in anti-parallel to the switching element; and a control device controlling the inverter circuit to convert a DC voltage into the AC voltage and to output the AC voltage to the stator coil. The control device includes: a field weakening control unit adjusting the AC voltage to control a magnetic field of the stator coil to weaken a field magnetic flux of the rotor; and a regenerative current control unit switching an anti-regenerative side switching element to flow a regenerative current when the AC voltage stops while the field weakening control unit performs the field weakening control.
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公开(公告)号：US20180022184A1
公开(公告)日：2018-01-25
申请号：US15549431
申请日：2016-01-29
Applicant: DENSO CORPORATION
Inventor： Teruaki OHYAMA , Koji SAKAI , Yuji KAMIYA , Tomoyuki SUMI , Shinji NAKAMOTO
CPC classification number: B60H1/00892 , B60H1/00385 , B60H1/00921 , B60H1/3223 , B60H2001/3272 , B60H2001/3275 , B60H2001/3292 , B60L1/003 , B60L1/08 , F25B1/04 , F25B5/04 , F25B6/04 , F25B49/02 , F25B2341/0662 , F25B2400/0409 , F25B2400/0411 , F25B2400/23 , F25B2600/021 , F25B2600/2501 , F25B2600/2509
Abstract: An air conditioner for a vehicle has a compressor, a radiator, a first pressure reducer, a gas-liquid separator, a second pressure reducer, an exterior heat exchanger, an intermediate pressure refrigerant passage, a switching device, and a controller. The controller operates the switching device to switch from a refrigerant circuit of a two-stage compression mode to a refrigerant circuit of a single-stage compression mode when a compressor stop signal is output in the two-stage compression mode. The single-stage compression mode is a mode that blocks at least a flow of an intermediate-pressure refrigerant into the intermediate pressure refrigerant passage and makes refrigerant remained in the intermediate pressure refrigerant passage to flow out of the intermediate pressure refrigerant passage. The controller stops the compressor after controls the compressor to continue operating for a specified time in the single-stage compression mode. The controller restarts the compressor when the compressor stop signal is canceled.
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