公开(公告)号：US08829836B2

公开(公告)日：2014-09-09

申请号：US13738304

申请日：2013-01-10

Applicant: Denso Corporation

Inventor： Junichi Fukuta ,  Tsuneo Maebara ,  Yoshiyuki Hamanaka

IPC: H02P6/14 ,  H02M1/08

CPC classification number: H02P6/14 ,  H02P27/08 ,  H03K17/166 ,  H03K17/168 ,  H03K17/56

Abstract: In a driver, a charging module stores negative charge on the gate of a switching element via a normal electrical path to charge the switching element upon a drive signal representing change of an on state to an off state. This shifts the on state of the switching element to the off state. An adjusting module changes a value of a parameter correlating with a charging rate of the switching element through the normal electrical path as a function of an input signal to the driver. The input signal represents a current flowing through the conductive path, a voltage across both ends of the conductive path, or a voltage at the gate. A disabling module disables the adjusting module from changing the value of the parameter if the drive signal represents the on state of the switching element.

Abstract translation: 在驱动器中，充电模块经由正常电路在开关元件的栅极上存储负电荷，以将表示开状态的变化的驱动信号充电至断开状态。 这将开关元件的接通状态转换到断开状态。 调整模块通过作为对驱动器的输入信号的函数，通过正常电气路径来改变与开关元件的充电速率相关的参数的值。 输入信号表示流过导电路径的电流，导电路径的两端的电压或栅极的电压。 如果驱动信号表示开关元件的导通状态，禁用模块将禁止调整模块更改参数值。

公开(公告)号：US10081253B2

公开(公告)日：2018-09-25

申请号：US15012448

申请日：2016-02-01

Applicant: DENSO CORPORATION

Inventor： Junichi Fukuta

IPC: H03K17/16 ,  B60L11/18 ,  H03K17/0412 ,  H02P29/024 ,  H02P21/22

CPC classification number: B60L11/18 ,  B60L50/50 ,  H02P21/22 ,  H02P29/027 ,  H03K17/0412 ,  H03K17/162 ,  H03K17/168 ,  Y02T10/643 ,  Y02T10/7005

Abstract: In a driving device for changing a semiconductor switching element, having an on-off control terminal, between an on state and an off state according to a power supply voltage input thereto, a constant-current driver generates a constant current based on the power supply voltage. The constant-current driver performs one of charging and discharging of the on-off control terminal of the semiconductor switching element based on the generated constant current so as to change the semiconductor switching element from one of the on state and off state to the other thereof. A rate varying unit adjusts, based on correlation information between the power supply voltage and the constant current, a value of the constant current so as to vary a rate of changing the semiconductor switching element from one of the on state and the off state to the other thereof.

公开(公告)号：US10031190B2

公开(公告)日：2018-07-24

申请号：US14264195

申请日：2014-04-29

Applicant: DENSO CORPORATION

Inventor： Syota Nakamura ,  Junichi Fukuta

IPC: G01D18/00 ,  G01R31/42 ,  G01R19/00

CPC classification number: G01R31/42 ,  G01R19/0084

Abstract: A voltage detection device controls operation of system main relays to change an applied voltage supplied to detection circuits. An error of each of the detection circuits is corrected on the basis of a detection value of each of the detection circuits when the applied voltage is changed. In particular, an offset value is corrected on the basis of a detection value of each of the detection circuits when the system main relays and booster switches are controlled so that a voltage of a high voltage battery supplied to each of the detection circuits becomes zero. A gain error is further corrected on the basis of a detection value of each of the detection circuits when the system main relays and the booster switches are controlled so that the applied voltage supplied to each of the detection circuits becomes equal to the voltage of the high voltage battery.

公开(公告)号：US09724999B2

公开(公告)日：2017-08-08

申请号：US14495128

申请日：2014-09-24

Applicant: DENSO CORPORATION

Inventor： Syun Miyauchi ,  Tsuneo Maebara ,  Yusuke Shindo ,  Junichi Fukuta

IPC: H03K17/691 ,  B60L11/18 ,  B60L15/00 ,  H03K17/61 ,  H02M7/00

CPC classification number: B60L11/1803 ,  B60L11/1864 ,  B60L15/007 ,  H02M7/003 ,  H03K17/61 ,  H03K17/691 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7061

Abstract: Upper arm connection sections and lower arm connection sections are provided in parallel. An upper arm transformer and a power supply are provided in an area opposed to the lower arm connection sections with respect to the upper arm connection sections. A power supply control section is provided in at least one of an area opposed to the upper arm connection sections with respect to the upper arm transformer, and an area which is sandwiched between at least one of the upper and lower connection sections closest to one side of the substrate positioned in a direction in which the upper arm connection sections are arranged, and the one side. The lower arm transformer is provided in an area opposed to the upper arm connection sections with respect to the lower arm connection sections. The lower arm transformer is common to at least two of the lower arm switching elements.

公开(公告)号：US09461457B2

公开(公告)日：2016-10-04

申请号：US14253125

申请日：2014-04-15

Applicant: DENSO CORPORATION

Inventor： Junichi Fukuta ,  Yoshiyuki Hamanaka ,  Masatoshi Taguchi ,  Tsuneo Maebara

IPC: H02M7/5387 ,  H02H3/08 ,  H03K17/082 ,  H03K17/16

CPC classification number: H02H3/08 ,  H02M7/5387 ,  H03K17/0828 ,  H03K17/165 ,  H03K17/168 ,  H03K2217/0081

Abstract: In a driver having a reference point with a reference potential for driving a target switching element having an on-off control terminal, a charging path electrically connects the on-off control terminal of the target switching element and a driving power source for charging the on-off control terminal of the target switching element. A bypass path electrically connects the on-off control terminal of the target switching element and the driving power source. A storage has a first conductive end electrically connected to the bypass path and a second conductive end electrically connected to the reference point of the target switching element, and is configured for storing therein charge sent through the bypass path.

Abstract translation: 在具有用于驱动具有开 - 关控制端子的目标开关元件的参考电位的参考点的驱动器中，充电路径将目标开关元件的通断控制端和驱动电源电连接，用于对导通 目标开关元件的控制端子。 旁通路将目标开关元件的通断控制端子与驱动电源电连接。 存储器具有电连接到旁路路径的第一导电端和电连接到目标开关元件的参考点的第二导电端，并且被配置为存储通过旁路路径发送的电荷。

公开(公告)号：US09419604B2

公开(公告)日：2016-08-16

申请号：US13901222

申请日：2013-05-23

Applicant: DENSO CORPORATION

Inventor： Junichi Fukuta ,  Tsuneo Maebara

IPC: G01K7/00 ,  G05D23/275 ,  H03K17/18 ,  H03K17/08

CPC classification number: H03K17/18 ,  H03K2017/0806

Abstract: In a driving system for driving a switching element, a controller controls the switching element. A temperature measuring module measures a temperature of the switching element, and output a first signal representing the measured temperature of the switching element as first information. A state determining module determines whether the switching element is in a specified temperature state based on the first signal, and outputs a second signal representing a result of the determination as second information. A communication medium communicably connects between the controller and the state determining module, and the second signal output from the state determining module being transferred to the controller via the communication medium. The controller determines how to drive the switching element based on the second information in the second signal transferred thereto via the communication medium.

Abstract translation: 在用于驱动开关元件的驱动系统中，控制器控制开关元件。 温度测量模块测量开关元件的温度，并将表示开关元件的测量温度的第一信号作为第一信息输出。 状态确定模块基于第一信号确定开关元件是否处于规定的温度状态，并且将表示该确定的结果的第二信号作为第二信息输出。 通信介质可通信地连接在控制器和状态确定模块之间，并且从状态确定模块输出的第二信号经由通信介质传送到控制器。 控制器基于经由通信介质传送到其的第二信号中的第二信息来确定如何驱动开关元件。

公开(公告)号：US09112344B2

公开(公告)日：2015-08-18

申请号：US13837503

申请日：2013-03-15

Applicant: DENSO CORPORATION

Inventor： Junichi Fukuta ,  Tsuneo Maebara

IPC: H02H7/16 ,  H02H1/00 ,  H03K17/082 ,  H02P29/02

CPC classification number: H02H1/0007 ,  H02H7/16 ,  H02P29/027 ,  H02P29/028 ,  H02P29/032 ,  H03K17/0828 ,  H03K2217/0027

Abstract: In a driver, a dissipating unit dissipates, upon a potential difference between input and output terminals of a switching element being lower than a predetermined potential, electrical charge for overcurrent detection between the input and output terminals. The dissipating unit includes a rectifier having a pair of first and second conductive terminals. The first conductive terminal is connected to the input terminal of the switching element. An overcurrent determiner determines that an overcurrent flows between the input and output terminals of the switching element upon determination that electrical charge has not been dissipated by the dissipating unit despite the change of the switching element from the off state to the on state. A failure determiner determines whether there is a failure in the dissipating unit as a function of a potential at a point on the first electrical path from the failure determiner to the second conductive terminal.

Abstract translation: 在驱动器中，耗散单元在开关元件的输入和输出端子之间的电位差低于预定电位时消耗用于输入和输出端子之间的过电流检测的电荷。 散热单元包括具有一对第一和第二导电端子的整流器。 第一导电端子连接到开关元件的输入端。 尽管切换元件从断开状态变为接通状态，但是过电流确定器确定在确定没有由耗散单元耗散电荷的情况下，过电流在开关元件的输入和输出端子之间流动。 故障确定器确定在从故障确定器到第二导电端子的第一电路上的点处的电位是否在耗散单元中是否存在故障。

公开(公告)号：US08841870B2

公开(公告)日：2014-09-23

申请号：US13738408

申请日：2013-01-10

Applicant: Denso Corporation

Inventor： Junichi Fukuta ,  Tsuneo Maebara

IPC: H02P27/06 ,  H03K17/06

CPC classification number: H02P27/06 ,  H02M7/5387 ,  H02P27/08 ,  H03K17/063 ,  H03K17/166 ,  H03K17/168

Abstract: In a driver, a changing module changes a rate of discharging the control terminal of a switch at least between a first value and a second value lower than the first value. A measuring module measures a value of a parameter as a function of a current flowing through the conductive path of the switch during a drive signal being in an on state. A control module controls the changing module, as a function of the value of the parameter, to select the first value or the second value as the rate of discharging the control terminal of the switch upon the drive signal directing a change from the on state of the switch to an off state thereof. The control module discharges the control terminal of the switch using the selected value as the rate of discharging the control terminal of the switch.

Abstract translation: 在驱动器中，改变的模块至少在第一值和低于第一值的第二值之间改变对开关的控制端的放电速率。 测量模块在驱动信号处于接通状态时测量作为流过开关的导电路径的电流的函数的参数值。 控制模块根据参数的值来控制改变模块，以根据驱动信号来选择第一值或第二值作为开关的控制端的放电速率，该驱动信号指示从开启状态 切换到关闭状态。 控制模块使用所选择的值将开关的控制端放电作为开关控制端子的放电速率。

公开(公告)号：US10374509B2

公开(公告)日：2019-08-06

申请号：US16194903

申请日：2018-11-19

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koichi Nishibata ,  Yusuke Shindo ,  Tomohisa Ose ,  Junichi Fukuta ,  Yasuhiro Terao ,  Eiichiro Shigehara ,  Keisuke Hata

IPC: H02M1/32 ,  H02H7/122 ,  H02P27/06 ,  H02P29/024 ,  H02H1/00 ,  H02M7/5387

Abstract: In a control circuit for controlling a power converter that includes a switch, a power supply circuit outputs electrical power, and a command generator generates a switching command that controls switching operations of the switch, based on the electrical power output from the power supply circuit. A failure mode determiner executes a determination of whether which of failure modes has occurred in the power supply circuit, and outputs a result of the determination. A switch controller selectively executes, based on the result of the determination, a first switch control task and a second switch control task. The first switch control task forcibly shuts down the switch independently of the switching command, and the second switch control task enables the switching operations of the switch to be continuously controlled based on the switching command.

公开(公告)号：US09716452B2

公开(公告)日：2017-07-25

申请号：US15092719

申请日：2016-04-07

Applicant: DENSO CORPORATION

Inventor： Koichi Nishibata ,  Junichi Fukuta ,  Yusuke Shindo

IPC: H02P6/16 ,  G01D5/20

CPC classification number: H02P6/16 ,  G01D5/2073 ,  H02P2203/00

Abstract: An ECU has a function of calculating a rotation angle, which is used for torque control, based on amplitude-modulated signals SIN and COS outputted from an angle sensor and a synchronous detection signal. Frequency components generated at the time of switching operation of switching elements of an inverter connected to a motor-generator is included in an output voltage of the inverter. The ECU has a function of shifting frequencies of the frequency components and an excitation frequency of an excitation signal from each other so that noise having the frequencies of the frequency components are not superimposed on the amplitude-modulated signals SIN and COS.