公开(公告)号：US10110020B2

公开(公告)日：2018-10-23

申请号：US14445475

申请日：2014-07-29

Applicant: DENSO CORPORATION

Inventor： Teppei Kawamoto ,  Nobuyoshi Osamura ,  Ryotaro Miura ,  Tomomichi Mizoguchi

IPC: H02J7/00

Abstract: An equalization device for equalizing voltages of battery cells connected in series includes equalization switches, resistors, and a control circuit. Each equalization switch has energization terminals interposed between terminals of a corresponding battery cell. A current path between the energization terminals conducts when a control voltage not less than a threshold voltage is applied between control terminals of the equalization switch. Each resistor is connected between the control terminals of the corresponding equalization switch. The control circuit switches an equalization execution state and an equalization stop state in accordance with an equalization signal provided for each battery cell. In the execution state, the control circuit passes an electric current through the corresponding resistor to generate the control voltage not less than the threshold voltage. In the stop state, the control circuit causes the corresponding resistor to generate the control voltage less than the threshold voltage.

公开(公告)号：US08970281B2

公开(公告)日：2015-03-03

申请号：US14091473

申请日：2013-11-27

Applicant: DENSO CORPORATION

Inventor： Teppei Kawamoto ,  Yasutaka Senda ,  Ryotaro Miura

IPC: H03L5/00 ,  H03K3/012 ,  H03K17/16

CPC classification number: H03K3/012 ,  H03K17/163 ,  H03K17/166 ,  H03K17/168

Abstract: A load driver includes a switching element connected to a load, a constant current generator that generates a constant current, and a driver circuit that turns on the switching element for an on-period, which depends on a value of the constant current and is shortened with an increase in the value of the constant current. The constant current generator supplies a first constant current having a first current value to the driver circuit during the on-period, and supplies a second constant current having a second current value smaller than the first current value after the on-period has elapsed and the switching element reaches an on state.

Abstract translation: 负载驱动器包括连接到负载的开关元件，产生恒定电流的恒定电流发生器以及导通开关元件导通开关元件的驱动电路，该导通期间取决于恒定电流的值并被缩短 随着恒流电流的增加。 恒定电流发生器在导通周期期间向驱动器电路提供具有第一电流值的第一恒定电流，并且在经过接通周期之后提供具有小于第一电流值的第二电流值的第二恒定电流，并且 开关元件达到导通状态。

公开(公告)号：US08729929B2

公开(公告)日：2014-05-20

申请号：US13766865

申请日：2013-02-14

Applicant: Denso Corporation

Inventor： Teppei Kawamoto ,  Ryotaro Miura

IPC: H03B1/00 ,  H03K3/00

CPC classification number: H02H9/025 ,  H03K17/063 ,  H03K17/08128

Abstract: A gate driving circuit includes a gate control circuit and a gate voltage limit circuit. The gate control circuit establishes or breaks electrical continuity of a gate voltage supply path from a power source line to a gate terminal of a transistor in response to an on-command and an off-command. The gate voltage limit circuit limits a gate voltage of the transistor to be less than or equal to a first voltage in response to the on-command at least in a period until a determination of whether an electric current greater than a fault criterion value flows to the transistor ends and then limits the gate voltage to be less than or equal to a second voltage.

Abstract translation: 栅极驱动电路包括栅极控制电路和栅极电压限制电路。 栅极控制电路响应于接通命令和断开命令，建立或断开栅极电压供应路径从电源线到晶体管的栅极端子的电连续性。 栅极电压限制电路至少在直到确定大于故障标准值的电流是否流向故障的时间段内，响应于导通命令，将晶体管的栅极电压限制为小于或等于第一电压 晶体管结束，然后将栅极电压限制为小于或等于第二电压。