公开(公告)号：US20150035487A1

公开(公告)日：2015-02-05

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

CPC classification number: H02J7/0016 ,  Y02T10/7055

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.

Abstract translation: 用于均衡串联连接的电池的电压的均衡装置包括均衡开关，电阻器和控制电路。 每个均衡开关具有插入相应电池单元的端子之间的通电端子。 当在均衡开关的控制端子之间施加不小于阈值电压的控制电压时，通电端子之间的电流通路导通。 每个电阻连接在相应的均衡开关的控制端子之间。 控制电路根据为每个电池单元提供的均衡信号切换均衡执行状态和均衡停止状态。 在执行状态下，控制电路通过相应电阻器的电流，以产生不小于阈值电压的控制电压。 在停止状态下，控制电路使相应的电阻器产生小于阈值电压的控制电压。

公开(公告)号：US20180284196A1

公开(公告)日：2018-10-04

申请号：US15764694

申请日：2016-11-25

Applicant: DENSO CORPORATION

Inventor： Yukihiro TOMONAGA ,  Ryotaro MIURA

IPC: G01R31/36 ,  H01M10/48 ,  H01M10/44 ,  H01M10/42

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.

公开(公告)号：US20170322261A1

公开(公告)日：2017-11-09

申请号：US15378271

申请日：2016-12-14

Applicant: DENSO CORPORATION

Inventor： Shunya YAMAMOTO ,  Kazutaka HONDA ,  Yukihiro TOMONAGA ,  Ryotaro MIURA

IPC: G01R31/36

CPC classification number: G01R31/3658 ,  G01R11/465 ,  G01R13/38 ,  G01R22/00 ,  G01R23/005 ,  H01Q1/2233

Abstract: A voltage detecting device detects a differential voltage between two input nodes having a non-zero common mode voltage. A differential voltage detecting circuit 5 detects the differential voltage by sampling each voltage of the input nodes and outputs a detection voltage indicating a detection result. A leak canceling circuit generates a compensating current, which flows in opposition to a leak current flowing out from the input nodes in correspondence to an operation of the differential voltage detecting circuit. An operation control part controls the leak canceling circuit to perform or stop a canceling operation. A failure diagnosing part performs a failure diagnosis about the leak canceling circuit based on a first detection value and a second detection value of the detection voltages, which are detected during periods when the leak canceling circuit performs and stops the canceling operation.

公开(公告)号：US20150035569A1

公开(公告)日：2015-02-05

申请号：US14332761

申请日：2014-07-16

Applicant: DENSO CORPORATION

Inventor： Ryotaro MIURA ,  Takashi GOTOU

IPC: H03K17/081

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。

公开(公告)号：US20210091425A1

公开(公告)日：2021-03-25

申请号：US17109478

申请日：2020-12-02

Applicant: DENSO CORPORATION

Inventor： Shunya YAMAMOTO ,  Ryotaro MIURA ,  Yukihiro TOMONAGA

IPC: H01M10/48 ,  H01M10/44 ,  H02J7/06 ,  G01R31/3835 ,  G01R19/00

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.

公开(公告)号：US20160061909A1

公开(公告)日：2016-03-03

申请号：US14842108

申请日：2015-09-01

Applicant: DENSO CORPORATION

Inventor： Junichi IINO ,  Tomomichi MIZOGUCHI ,  Ryotaro MIURA

IPC: G01R31/36

CPC classification number: G01R31/362 ,  G01R31/024 ,  G01R31/04 ,  G01R31/3658

Abstract: A battery monitoring apparatus includes wire sections each connected to a node of corresponding adjacent two of the unit cells of a battery pack at one end thereof, and branched into a first branch section and a second branch section at another end thereof. Each of the first and second branch sections is constituted of a positive part connected to a positive electrode of the corresponding unit cell and a negative part connected to a negative electrode of the corresponding unit cell. The battery monitoring apparatus includes an equalizing switch provided between each of the first wire pairs, and a voltage detector to detect a voltage between each first wire pair, and an equalizing section which performs an equalizing process to equalize a terminal voltage of each unit cell by turning on the corresponding equalizing switch depending on a result of voltage detection by the voltage detector.

Abstract translation: 电池监视装置包括电线部分，每个电线部分分别连接到一端的电池组的相应的相邻两个单电池的节点，并且在另一端分支成第一分支部分和第二分支部分。 第一分支部分和第二分支部分中的每一个都由与相应单位单元的正极连接的正极部分和连接到相应的单位电池的负极的负极部分构成。 电池监视装置包括设置在每个第一线对之间的均衡开关和用于检测每个第一线对之间的电压的电压检测器和执行均衡处理以使每个单位电池的端电压均衡的均衡部分 根据电压检测器的电压检测结果打开对应的均衡开关。

公开(公告)号：US20130307593A1

公开(公告)日：2013-11-21

申请号：US13892829

申请日：2013-05-13

Applicant: DENSO CORPORATION

Inventor： Junichi FUKUTA ,  Tsuneo MAEBARA ,  Ryotaro MIURA ,  Takeyasu KOMATSU

IPC: H03K17/30

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。

公开(公告)号：US20130214823A1

公开(公告)日：2013-08-22

申请号：US13766865

申请日：2013-02-14

Applicant: DENSO CORPORATION

Inventor： Teppei KAWAMOTO ,  Ryotaro MIURA

IPC: H02H9/02 ,  H03K17/06

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。

公开(公告)号：US20150102820A1

公开(公告)日：2015-04-16

申请号：US14514594

申请日：2014-10-15

Applicant: DENSO CORPORATION

Inventor： Shunichi MIZOBE ,  Tsuneo MAEBARA ,  Ryotaro MIURA ,  Masaya ITOU

IPC: G01R31/36

CPC classification number: G01R31/362 ,  G01R31/3658 ,  H02J7/047 ,  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.

Abstract translation: 一种能够降低功耗的电池监视装置。 至少一个监控集成电路（IC）电连接到由多个单元形成的高电压电池，并且被配置为以多种操作模式监视高压电池。 低压电源电路可以向至少一个监控IC提供比高电压电池的电力低的电力。 根据至少一个监视IC的操作模式，从一组高压电池和低压电源电路中选择至少一个监视IC的电源。

公开(公告)号：US20150077060A1

公开(公告)日：2015-03-19

申请号：US14477921

申请日：2014-09-05

Applicant: DENSO CORPORATION

Inventor： Shouichi OKUDA ,  Ryotaro MIURA

IPC: H02J7/00

CPC classification number: H02J7/0019 ,  H02J7/0052 ,  Y02T10/7055

Abstract: In an equalization device for equalizing voltages of battery cells connected in series, each battery cell is provided with an equalization switch and a level shift section. The level shift section includes at least one level shift circuit. Each level shift circuit operates on a power supply voltage supplied from a series circuit of a predetermined number of adjacent battery cells. The level shift circuits are arranged so that potentials of the power supply voltages are different from each other in sequence. In the level shift section, a first level shift circuit outputs a pair of drive voltages by level-shifting a pair of control signals inputted from a second level shift circuit adjacent to the first level shift circuit, and a last level shift circuit outputs the pair of drive voltages as a control voltage for a corresponding equalization switch.

Abstract translation: 在用于均衡串联连接的电池单元的电压的均衡装置中，每个电池单元设置有均衡开关和电平移位部分。 电平移位部分包括至少一个电平移位电路。 每个电平移位电路根据预定数量的相邻电池单元的串联电路提供的电源电压进行工作。 电平移位电路被布置成使得电源电压的电位依次彼此不同。 在电平移位部分中，第一电平移位电路通过对从与第一电平移位电路相邻的第二电平移位电路输入的一对控制信号进行电平移位来输出一对驱动电压，并且最后电平移位电路输出该对 的驱动电压作为相应的均衡开关的控制电压。