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公开(公告)号：US10054642B2
公开(公告)日：2018-08-21
申请号：US14514594
申请日：2014-10-15
Applicant: DENSO CORPORATION
Inventor： Shunichi Mizobe , Tsuneo Maebara , Ryotaro Miura , Masaya Itou
CPC classification number: G01R31/3835 , G01R31/396 , H02J7/047 , H02J2001/008 , H02J2007/0067
Abstract: A battery monitoring apparatus capable of reducing power consumption. At least one monitoring integrated circuit (IC) is electrically connected to a high-voltage battery formed of a plurality of cells and configured to monitor the high-voltage battery in a plurality of modes of operation. A low-voltage power supply circuit can deliver power of a lower voltage than the power of the high-voltage battery to the at least one monitoring IC. A power supply to the at least one monitoring IC is selected from a group of the high-voltage battery and the low-voltage power supply circuit depending on the mode of operation the at least one monitoring IC.
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公开(公告)号：US08749279B2
公开(公告)日：2014-06-10
申请号：US13959907
申请日：2013-08-06
Applicant: Denso Corporation
Inventor： Hiroyuki Morita , Tsuneo Maebara , Takeyasu Komatsu , Ryotaro Miura , Tomotaka Suzuki
IPC: H03K3/00
CPC classification number: H03K17/063
Abstract: In a driver apparatus for driving a voltage-controlled switching element, an absolute value of a voltage difference between a voltage at a reference terminal that is one of terminals of a current path of the switching element and a voltage at the switching control terminal of the switching element is clamped at a clamping voltage greater than a threshold voltage. A voltage greater than the threshold voltage applied to the switching control terminal allows the switching element to be turned on. When the current flowing through the switching element becomes equal to or greater than a clamp threshold after the switching element transitions from an off-state to an on-state, a voltage-drop-rate at which the absolute value is decreased to the clamping voltage is decreased.
Abstract translation: 在用于驱动压控开关元件的驱动器装置中，作为开关元件的电流路径的端子之一的基准端的电压与开关元件的开关控制端的电压之间的电压差的绝对值 开关元件被钳位在大于阈值电压的钳位电压。 大于施加到开关控制端子的阈值电压的电压允许开关元件导通。 当开关元件从断开状态转变为导通状态时，流过开关元件的电流变得等于或大于钳位阈值时，绝对值降低到钳位电压的电压降率 减少。
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公开(公告)号：US10274544B2
公开(公告)日：2019-04-30
申请号：US14445383
申请日：2014-07-29
Applicant: DENSO CORPORATION
Inventor： Yukihiro Tomonaga , Tetsuya Makihara , Kazutaka Honda , Nobuyoshi Osamura , Ryotaro Miura
IPC: G01R31/36
Abstract: A route switching circuit includes: a pair of normal detection routes that output voltages of a positive side connection point and a negative side connection point, which are different from each other, in multiple batteries for constituting an assembled battery; and a pair of diagnosis detection routes that output the voltages of the positive side connection point and the negative side connection point, and confirm a connection state of the normal detection routes by using the normal detection routes, which output at least one of a voltage of a positive side battery connected to a positive side from the positive side connection point and a voltage of a negative side battery connected to a negative side from the negative side connection point.
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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.
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公开(公告)号：US11054484B2
公开(公告)日：2021-07-06
申请号：US15764694
申请日：2016-11-25
Applicant: DENSO CORPORATION
Inventor： Yukihiro Tomonaga , Ryotaro Miura
Abstract: An assembled battery monitoring system includes: a voltage monitoring apparatus; discharging resistance elements and RC filters that are correspondingly coupled between battery cells of an assembled battery and the voltage monitoring apparatus; and discharging switches disposed in the voltage monitoring apparatus correspondingly to the battery cells. The voltage monitoring apparatus has at least three connection terminals for each of the battery cells. Two of the connection terminals are used to monitor a voltage of a corresponding battery cell through an output terminal of a corresponding RC filter, and at least one of a remainder of the connection terminals is used to form a discharging path of the corresponding battery cell when a corresponding discharging switch is turned on. Each discharging resistance element is disposed on the discharging path at a position that prohibits discharging of charges stored in a capacitor of the corresponding RC filter.
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Patent Agency Ranking
公开(公告)号：US09172367B2
公开(公告)日：2015-10-27
申请号：US13892829
申请日：2013-05-13
Applicant: DENSO CORPORATION
Inventor： Junichi Fukuta , Tsuneo Maebara , Ryotaro Miura , Takeyasu Komatsu
CPC classification number: H03K17/30 , H03K17/06 , H03K2017/066
Abstract: In a drive unit for a switching element, a drive circuit changes the switching element between an on-state and an off-state, by controlling a potential difference between a reference terminal, which is one of a pair of ends of a current path of the switching element, and an opening-closing control terminal of the switching element. A determination section determines, if an on-operation command or an off-operation command is inputted as an operation signal for the switching element, whether or not the potential difference has reached a specific value toward which the potential difference shifts, in response to one of the operation commands, with respect to a threshold value by which the switching element is turned on. A forcible processing section removes charge for turning on the switching element from the opening-closing control terminal, if the determination section determines that the potential difference has not reached the specific value.
Abstract translation: 在用于开关元件的驱动单元中，驱动电路通过控制参考端子之间的电位差来控制开关元件的导通状态和截止状态之间的电位差， 开关元件和开关元件的开闭控制端子。 确定部分确定如果输入操作命令或关闭操作命令作为开关元件的操作信号，则响应于一个电位差，电位差是否达到电位差移动的特定值 关于开关元件导通的阈值的操作命令。 如果确定部分确定电位差未达到特定值，则强制处理部分去除从开闭控制端子接通开关元件的电荷。
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公开(公告)号：US09094005B2
公开(公告)日：2015-07-28
申请号：US14332761
申请日：2014-07-16
Applicant: DENSO CORPORATION
Inventor： Ryotaro Miura , Takashi Gotou
IPC: H03K3/00 , H03K17/081 , H03K17/16
CPC classification number: H03K17/08112 , H03K17/167 , H03K17/168
Abstract: A semiconductor element module includes a driving element and a voltage change detecting element each formed of a voltage driving semiconductor element. The voltage change detecting element detects a change of a voltage between a collector and an emitter or between a drain and a source of the driving element. A collector or a drain of the voltage change detecting element is connected to the collector or the drain of the driving element, and a gate of the voltage change detecting element is connected to an emitter or a source of the voltage change detecting element. The emitter or the source of the voltage change detecting element is provided as a detecting terminal.
Abstract translation: 半导体元件模块包括由电压驱动半导体元件形成的驱动元件和电压变化检测元件。 电压变化检测元件检测集电极与发射极之间或驱动元件的漏极与源极之间的电压变化。 电压变化检测元件的集电极或漏极连接到驱动元件的集电极或漏极，电压变化检测元件的栅极连接到电压变化检测元件的发射极或源极。 电压变化检测元件的发射极或源极被提供作为检测端子。
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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
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。
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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
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。
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公开(公告)号：US11881566B2
公开(公告)日：2024-01-23
申请号：US17109478
申请日：2020-12-02
Applicant: DENSO CORPORATION
Inventor： Shunya Yamamoto , Ryotaro Miura , Yukihiro Tomonaga
IPC: H01M10/48 , G01R31/3835 , G01R19/00 , H01M10/44 , H02J7/06
CPC classification number: H01M10/482 , G01R19/0084 , G01R31/3835 , H01M10/441 , H01M10/48 , H02J7/06
Abstract: A battery pack monitoring system comprises first and second wirings connected to each battery cell, an RC filter formed of a resistor and a capacitor, and a discharging switch provided between two second wirings in a voltage monitoring device. The first and second wirings and the discharging switch are also connected to both ends of an inter-group group wire. In the second wiring of each battery cell, a discharging resistor is provided not to cause discharging of the charge in the capacitor. In the second wiring connected to a low voltage side for the inter-group wiring, a current limiting resistor having a higher resistance value than the discharging resistor is provided. A substitute discharging switch and a discharging resistor are provided so that the substitute discharging switch is turned on upon a voltage drop generated when current flows through the current limiting resistor.
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