公开(公告)号：EP2308714A3

公开(公告)日：2017-06-07

申请号：EP10174018.1

申请日：2010-08-25

申请人： Hitachi Automotive Systems, Ltd.

发明人： Myoen, Kohei ,  Yamai, Hiroyuki

IPC分类号： B60L3/12

CPC分类号： B60L3/12 ,  H02H9/001

摘要： A power supply device includes: a power supply (1); a first contactor (2) and a second contactor (3) that are connected between the power supply (1) and a load (9); a voltage detection circuit (5A) that detects a voltage between a load side of the first contactor (2) and a power supply side of the second contactor (3); and a control unit (6) that sets the contactors to an open / closed state. In a state in which electrical power has not been supplied to the load (9), a voltage which is greater than zero and less than a voltage at the power supply (1) is applied between a positive electrode and a negative electrode on the load side; and after controlling the contactors to an open state, the control unit (6) makes a decision as to whether or not one of the contactors is welded based upon detection results of the voltage detection circuit (5A).

摘要翻译： 一种电源装置包括：电源（1）; 连接在电源（1）和负载（9）之间的第一接触器（2）和第二接触器（3）; 检测第一接触器（2）的负载侧与第二接触器（3）的电源侧之间的电压的电压检测电路（5A）; 以及将接触器设定为打开/闭合状态的控制单元（6）。 在没有向负载（9）供给电力的状态下，在负载（9）的正极和负极之间施加比电源（1）的电压大且零以下的电压 侧; 并且在将接触器控制到打开状态之后，控制单元（6）基于电压检测电路（5A）的检测结果来判断接触器中的一个是否被焊接。

公开(公告)号：EP2424064A1

公开(公告)日：2012-02-29

申请号：EP11177857.7

申请日：2011-08-17

申请人： Hitachi Automotive Systems, Ltd.

发明人： Yamai, Hiroyuki ,  Noto, Yasuo ,  Akaishi, Yoshio ,  Myoen, Kohei

IPC分类号： H02H7/122 ,  H02H7/08

CPC分类号： G01R31/02 ,  H02M7/537 ,  H02M2001/0009 ,  H02P29/032

摘要： According to the present invention, an overcurrent fault detection device includes: an inverter 2 converting DC current to three-phase AC currents for driving a motor 3; a DC voltage detector 4; phase current detectors 5-7; a rotational position detector 8 that detects a rotational angle of the motor 3; a control circuit 9 that controls a gate drive circuit 10, which controls the inverter 2 at every predetermined cycle, based upon the phase current values, a motor rotational angle detection value, and a speed command or a torque command from a higher-order control device; and a first decision-making circuit that detects an overcurrent based upon the phase current values at every predetermined cycle, wherein: the first decision-making circuit determines whether or not the phase current values exceed a predetermined amplitude threshold value by frequency detection for any of the phase current values exceeding the predetermined amplitude threshold value, and determines that an overcurrent has occurred upon detecting the frequency.

摘要翻译： 根据本发明，过电流故障检测装置包括：逆变器2将直流电流转换成用于驱动电动机3的三相交流电流; 直流电压检测器4; 相电流检测器5-7; 检测电动机3的旋转角度的旋转位置检测器8; 控制电路9，其基于相电流值，电动机旋转角度检测值，以及来自高级控制器的转速指令或转矩指令，控制以每隔一定周期控制逆变器2的门驱动电路10 设备; 以及第一决策电路，其基于每个预定周期的相电流值来检测过电流，其中：所述第一决策电路通过频率检测来确定所述相电流值是否超过预定振幅阈值 相电流值超过预定振幅阈值，并且在检测到频率时确定已经发生过电流。

公开(公告)号：EP2424064B1

公开(公告)日：2015-07-15

申请号：EP11177857.7

申请日：2011-08-17

申请人： Hitachi Automotive Systems, Ltd.

发明人： Yamai, Hiroyuki ,  Noto, Yasuo ,  Akaishi, Yoshio ,  Myoen, Kohei

IPC分类号： H02H7/122 ,  H02H7/08 ,  H02P29/02

CPC分类号： G01R31/02 ,  H02M7/537 ,  H02M2001/0009 ,  H02P29/032

公开(公告)号：EP2308714A2

公开(公告)日：2011-04-13

申请号：EP10174018.1

申请日：2010-08-25

申请人： Hitachi Automotive Systems, Ltd.

发明人： Myoen, Kohei ,  Yamai, Hiroyuki

IPC分类号： B60L3/12

CPC分类号： B60L3/12 ,  H02H9/001

摘要： A power supply device includes: a power supply (1); a first contactor (2) and a second contactor (3) that are connected between the power supply (1) and a load (9); a voltage detection circuit (5A) that detects a voltage between a load side of the first contactor (2) and a power supply side of the second contactor (3); and a control unit (6) that sets the contactors to an open / closed state. In a state in which electrical power has not been supplied to the load (9), a voltage which is greater than zero and less than a voltage at the power supply (1) is applied between a positive electrode and a negative electrode on the load side; and after controlling the contactors to an open state, the control unit (6) makes a decision as to whether or not one of the contactors is welded based upon detection results of the voltage detection circuit (5A).

摘要翻译： 一种电源装置，包括：电源（1）; 第一接触器（2）和一个第二接触器（3）并连接在电源（1）和负载（9）之间; 的电压检测电路（图5A）那样检测第一接触器（2）和所述第二接触器（3）的电源侧的负载侧之间的电压; 和控制单元（6）那样设定接触器的打开/闭合状态。 在其中的电功率处理不当的状态下被提供给负载（9），一个电压全部为大于零且小于一电压在所述电源（1）的正电极和负电极之间施加的负载 侧; 以及控制所述接触器为开放状态之后，所述控制单元（6），使作为对接触器中的一个是否是基于所述电压检测电路（图5A）的检测结果而熔接的决定。