公开(公告)号：US20130099793A1

公开(公告)日：2013-04-25

申请号：US13657971

申请日：2012-10-23

Applicant: DENSO CORPORATION

Inventor： Takumi SHIMIZU

IPC: G01R31/36

CPC classification number: G01R31/36 ,  B60L11/1851 ,  B60L11/1866 ,  H02J7/0014 ,  H02J7/0021 ,  Y02T10/7005 ,  Y02T10/7061

Abstract: A battery monitoring apparatus for monitoring a battery condition of an assembled battery. In the apparatus, a control unit transmits, to a monitoring unit that is powered by the assembled battery and monitors its battery condition, a first mode-switching instruction signal for instructing the monitoring unit to transition from a normal mode to a dark-current mode. Subsequently, the control unit transmits to the monitoring unit a second mode-switching signal for instructing the monitoring unit to transition from the dark-current mode to the normal mode, and acquires an increased count value of a timer circuit in the monitoring unit for a time period from transmission of the first mode-switching instruction signal to transmission of the second mode-switching instruction signal. When it is determined that the increased count value is greater than an abnormality diagnosis criterion value, then the control unit determines that the dark-current mode of the monitoring unit is malfunctioning.

Abstract translation: 一种用于监视组合电池的电池状态的电池监视装置。 在该装置中，控制单元向由组合电池供电并监视其电池状态的监视单元发送用于指示监视单元从正常模式转换为暗电流模式的第一模式切换指示信号 。 随后，控制单元向监视单元发送用于指示监视单元从暗电流模式转换到正常模式的第二模式切换信号，并且获取监视单元中的定时器电路的增加的计数值 从第一模式切换指令信号发送到第二模式切换指令信号的发送的时间段。 当确定增加的计数值大于异常诊断标准值时，控制单元确定监视单元的暗电流模式发生故障。

公开(公告)号：US20130099748A1

公开(公告)日：2013-04-25

申请号：US13654500

申请日：2012-10-18

Applicant: DENSO CORPORATION

Inventor： Takumi SHIMIZU

IPC: G01R31/36 ,  H02J7/00

CPC classification number: H02J7/0014 ,  H02J7/0021 ,  H02J2007/0095 ,  Y02T10/7055

Abstract: A battery monitoring apparatus for monitoring a battery condition of an assembled battery. In the apparatus, a monitoring unit is powered by the assembled battery and transitions from a normal mode, in which power supply from the assembled battery to the monitoring unit is maintained, to a dark-current mode, in which the power supply is partially interrupted, in response to a mode-switching instruction signal from a control unit. Upon reception of a mode confirmation signal from the control unit during the normal mode, the monitoring unit transmits a response signal to the control unit. The control unit transmits the mode-switching instruction signal to the monitoring unit, and thereafter transmits the mode confirmation signal to the monitoring unit. Upon reception of the response signal to the mode confirmation signal from the monitoring unit, the control unit determines that the dark-current mode of the monitoring unit is malfunctioning.

Abstract translation: 一种用于监视组合电池的电池状态的电池监视装置。 在该装置中，监视单元由组合电池供电，并且从维持从组装电池向监控单元供电的正常模式转换到暗电流模式，其中电源被部分中断 响应于来自控制单元的模式切换指令信号。 在正常模式期间从控制单元接收到模式确认信号时，监视单元向控制单元发送响应信号。 控制单元将模式切换指示信号发送到监视单元，然后向监视单元发送模式确认信号。 当接收到来自监视单元的模式确认信号的响应信号时，控制单元确定监视单元的暗电流模式发生故障。

公开(公告)号：US20190235029A1

公开(公告)日：2019-08-01

申请号：US16265071

申请日：2019-02-01

Applicant: DENSO CORPORATION

Inventor： Takumi SHIMIZU

IPC: G01R31/3835

CPC classification number: G01R31/3835

Abstract: A battery monitoring apparatus acquires a first physical quantity detected by a first detecting unit, and acquires a second physical quantity detected by a second detecting unit at each predetermined detection period. The battery monitoring apparatus stores the acquired first physical quantity and the acquired second physical quantity in association with respective time parameters. The time parameter is a time of detection of the respective first or second physical quantity or a correlation value that is correlated with the time of detection of the respective first or second physical quantity. The battery monitoring apparatus monitors a state of a storage battery using a set of first physical quantity and second physical quantity of which a difference in the time of detection is shorter than the detection period, among the first physical quantities and the second physical quantities stored by the battery monitoring apparatus, based on the time parameters.

公开(公告)号：US20230022784A1

公开(公告)日：2023-01-26

申请号：US17957877

申请日：2022-09-30

Applicant: DENSO CORPORATION

Inventor： Yoshiki SUZUKI ,  Keisuke SUZUKI ,  Takumi SHIMIZU ,  Shuji KURAUCHI

IPC: H02M3/28 ,  H02M3/335

Abstract: A power converter configured to be connected to three or more voltage parts, includes three or more power-conversion circuitries to be connected to respective ones of the three or more voltage parts, and a multi-port transformer connected to the three or more power-conversion circuitries at respectively different ports. The three or more voltage parts include a vehicle drive battery and a plurality of alternating-current (AC) voltage parts. Each of the plurality of AC voltage parts is configured to provide at least one of power input to a multi-port transformer side and power output from the multi-port transformer side.

公开(公告)号：US20180017627A1

公开(公告)日：2018-01-18

申请号：US15650225

申请日：2017-07-14

Applicant: DENSO CORPORATION

Inventor： Takumi SHIMIZU

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

CPC classification number: G01R31/382 ,  G01R19/2506 ,  G01R31/36 ,  G01R31/3648 ,  G01R31/371 ,  G01R31/396 ,  H01M10/441 ,  H01M10/48 ,  H01M10/482 ,  H01M10/625 ,  H01M2010/4271 ,  H01M2220/20 ,  H02J7/0004 ,  H02J7/0008 ,  H02J7/0013

Abstract: A battery monitoring system monitors a storage battery. The system includes a voltage detection section that detects voltage across terminals of the storage battery, a current detection section that detects charging/discharging current flowing to the storage battery, a first obtainment section that obtains a detection value of the voltage across the terminals and a detection value of the charging/discharging current so as to be associated with each other, at predetermined synchronization periods, a battery control section that controls the storage battery based on the detection value of the voltage across the terminals and the detection value of the charging/discharging current, a second obtainment section that obtains the detection value of the charging/discharging current at a plurality of time points in the predetermined synchronization period, and an average value calculation section that calculates an average value of the detection values of the charging/discharging current obtained at the plurality of time points.

公开(公告)号：US20210028637A1

公开(公告)日：2021-01-28

申请号：US16937424

申请日：2020-07-23

Applicant: DENSO CORPORATION

Inventor： Masaaki KITAGAWA ,  Shun MIYAUCHI ,  Takumi SHIMIZU

IPC: H02J7/00 ,  G01R31/389 ,  G01R31/364 ,  G01R31/396 ,  H01M10/44 ,  H01M10/48

Abstract: A battery monitoring apparatus includes a circuit board, a signal control unit configured to cause a predetermined AC signal to be outputted from a storage battery through a first electrical path, a response signal input unit configured to input, through a pair of second electrical paths, a response signal of the storage battery to the AC signal, and a calculating unit configured to calculate, based on the response signal, a complex impedance of the storage battery. The first and second electrical paths are provided on a major face of the circuit board. On the circuit board, there is defined a first region which is surrounded by the first and second electrical paths and two terminals of the storage battery. The size of the first region is set to have an electromotive force, which is induced in the second electrical paths by the AC signal, be within an allowable electromotive-force range.

公开(公告)号：US20200271732A1

公开(公告)日：2020-08-27

申请号：US16784447

申请日：2020-02-07

Applicant: DENSO CORPORATION

Inventor： Takumi SHIMIZU

IPC: G01R31/64 ,  G01R19/165 ,  G01R31/3835 ,  G01R31/396 ,  H01M10/48

Abstract: A voltage detection apparatus for an assembled battery includes: a capacitor; input-side switches provided between the capacitor and detection targets each including at least one battery cell; a voltage detection unit configured to detect the voltage of the capacitor; output-side switches provided between the capacitor and the voltage detection unit; a capacitor charging unit configured to charge the capacitor using a specific detection target; a first-voltage acquiring unit configured to acquire a first voltage which is the voltage of the capacitor after the passage of a first period from the charging of the capacitor; a second-voltage acquiring unit configured to acquire a second voltage which is the voltage of the capacitor after the passage of a second period from the acquisition of the first voltage; and a fault determining unit configured to determine, based on the acquired first and second voltages, whether a leak fault has occurred in the capacitor.