公开(公告)号：US20180331396A1

公开(公告)日：2018-11-15

申请号：US15976071

申请日：2018-05-10

Applicant: DENSO CORPORATION

Inventor： Takahiro SOKI ,  Takashi INAMOTO ,  Ryosuke SAKAI ,  Takeshi TSUKAMOTO

IPC: H01M10/42 ,  H01M2/20 ,  H01M10/48 ,  H01M2/10 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6561 ,  G01R31/36

CPC classification number: H01M10/425 ,  G01R31/005 ,  G01R31/364 ,  G01R31/3828 ,  H01M2/1077 ,  H01M2/1083 ,  H01M2/12 ,  H01M2/206 ,  H01M10/4207 ,  H01M10/48 ,  H01M10/482 ,  H01M10/486 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6561 ,  H01M10/6563 ,  H01M2010/4271 ,  H01M2220/20

Abstract: A control module is arranged in alignment with a battery module in a longitudinal direction. The control module includes a busbar, a switch and a current sensor configured to detect electric current flowing through the busbar. The current sensor includes a magneto-electric transducer and a magnetic field suppressor. The magneto-electric transducer is configured to convert a magnetic field, which depends on the electric current flowing through the busbar and passes through the magneto-electric transducer along a plane perpendicular to a height direction, into an electrical signal. The magnetic field suppressor is configured to suppress external magnetic fields from passing through the magneto-electric transducer along the plane perpendicular to the height direction. The switch includes a pair of magnets that are magnetized and opposed to each other in a lateral direction perpendicular to both the longitudinal and height directions. The current sensor is aligned with the magnets in the longitudinal direction.

公开(公告)号：US20180326863A1

公开(公告)日：2018-11-15

申请号：US15975877

申请日：2018-05-10

Applicant: DENSO CORPORATION

Inventor： Takahiro SOKI ,  Takashi INAMOTO ,  Ryosuke SAKAI ,  Takeshi TSUKAMOTO

IPC: B60L11/18 ,  H01M10/44 ,  H01M10/48 ,  H01M2/10 ,  H01M10/04 ,  H02J7/04

CPC classification number: B60L11/1879 ,  B60L11/1855 ,  H01M2/1077 ,  H01M2/1083 ,  H01M10/0413 ,  H01M10/441 ,  H01M10/482 ,  H01M2010/4271 ,  H02J7/04

Abstract: A control module is arranged in alignment with a battery module in a longitudinal direction. The battery module includes battery cells that are aligned in the longitudinal direction and each have upper and lower end faces opposite to each other in a height direction perpendicular to the longitudinal direction. The control module includes a busbar configured to electrically connect the battery module to an electrical load, a switch configured to switch electrical connection of the busbar with the electrical load between a connected state and a disconnected state, and a controller that controls the switch. In the height direction, the busbar is located closer to the upper end faces of the battery cells than to the lower end faces; the controller is located closer to the lower end faces of the battery cells than to the upper end faces; and the switch is located between the busbar and the controller.

公开(公告)号：US20170016959A1

公开(公告)日：2017-01-19

申请号：US15210077

申请日：2016-07-14

Applicant: DENSO CORPORATION

Inventor： Hayato MIZOGUCHI ,  Takashi INAMOTO

IPC: G01R31/327 ,  H02H1/00

CPC classification number: G01R31/3278 ,  G01R31/44 ,  H02H3/044 ,  H02H3/17

Abstract: A monitoring system is applied to an electrical system, which includes a DC power source and an electrical apparatus that is connected to the DC power source by a pair of electric power leads incorporating respective switches. To detect leakage current from the DC power source, a low-frequency AC signal is applied via a large-capacitance capacitor to a specific connection position, between a first terminal of the DC power source and the corresponding switch, and the resultant voltage of that signal is measured. To detect a short-circuit failure of one or both of the switches, a high-frequency AC signal is applied via a low-capacitance capacitor to the specific connection position, and the resultant signal voltage is measured. Judgement as to occurrence of leakage current and/or short-circuit failure is based on the measured signal voltage values.

Abstract translation: 一种监视系统应用于电气系统，该电气系统包括直流电源和通过一对包含各个开关的电力线连接到直流电源的电气设备。 为了检测来自直流电源的泄漏电流，通过大容量电容器将低频AC信号施加到直流电源的第一端子与相应的开关之间的特定连接位置，并且其中的合成电压 测量信号。 为了检测一个或两个开关的短路故障，经由低容量电容器将高频AC信号施加到特定连接位置，并且测量所得到的信号电压。 关于泄漏电流和/或短路故障的发生的判断基于测量的信号电压值。

公开(公告)号：US20190277923A1

公开(公告)日：2019-09-12

申请号：US16297210

申请日：2019-03-08

Applicant: DENSO CORPORATION

Inventor： Takashi INAMOTO

IPC: G01R31/396 ,  G01R31/364 ,  G01R31/3828 ,  G01R31/3835 ,  H02J7/00

Abstract: A battery monitoring apparatus includes a first voltage detector provided to a first short circuit connected to a target cell, a second voltage detector connected to the target cell and provided to a second short circuit, a switch forming a closed circuit connected to an assembled battery and including a resistor, a third voltage detector detecting an inter-terminal voltage between positive and negative electrode terminals of the assembled battery, a switch abnormality determination section determining, in a state where the switch is driven in a closing direction, presence or absence of abnormal opening of the switch based on a difference between detection voltages obtained by the first and second voltage detectors, and a disconnection determination section determining, in the state where the switch is driven in the closing direction, presence or absence of disconnection at the assembled battery based on a detection voltage obtained by the third voltage detector.

公开(公告)号：US20180088178A1

公开(公告)日：2018-03-29

申请号：US15706108

申请日：2017-09-15

Applicant: DENSO CORPORATION

Inventor： Takashi INAMOTO ,  Tsuneo MAEBARA ,  Ryotaro MIURA

IPC: G01R31/36

CPC classification number: G01R31/3835 ,  G01R31/396

Abstract: A voltage-detecting device applied to a battery pack includes a serially connected body of plural battery cells.Serially connected bodies of at least two of the battery cells of the battery pack form detection blocks; each of the respective battery cells of a detection block, or a serially connected body of a number of battery cells in a detection block that is less than the number of the battery cells of the detection block is taken to be a battery for which voltage is to be detected. Monitoring units includes a main voltage-detecting unit for detecting terminal voltage of each of the batteries; a positive-electrode-side input unit electrically connected to the positive-electrode side of a detection block; a negative-electrode-side input unit electrically connected to the negative-electrode side thereof; and sub voltage-detecting units for detecting terminal voltage of the detection blocks as the state of the battery pack.

公开(公告)号：US20170131339A1

公开(公告)日：2017-05-11

申请号：US15348183

申请日：2016-11-10

Applicant: DENSO CORPORATION

Inventor： Takashi INAMOTO ,  Masakatsu HORIGUCHI

IPC: G01R31/02

CPC classification number: G01R31/025 ,  G01R31/40

Abstract: A failure inspection system includes a main circuit section, an electrically conductive member, capacitors, a signal generating section, a measurement section and a judgement section. The signal generating section generates a high-frequency AC signal and a low-frequency AC signal. The judgement section determines whether either one of two types of failure has occurred based on the voltage or the current of the high-frequency AC signal. If it is determined that a failure is occurring, the judgment section specifies that which of failures, a leakage current failure or a short-circuit failure, the failure that has occurred is, based on a measurement value of the low-frequency AC signal derived from the measurement section.

公开(公告)号：US20170012422A1

公开(公告)日：2017-01-12

申请号：US15206419

申请日：2016-07-11

Applicant: DENSO CORPORATION

Inventor： Hayato MIZOGUCHI ,  Takashi INAMOTO

IPC: H02H3/16 ,  H02H1/06

CPC classification number: H02H11/005 ,  B60L3/0069

Abstract: A fault detection system is provided which includes power lines connecting between a DC power supply and electric equipment, switches respectively provided to the power lines, a capacitor connected to the power lines at a position where a distance to the electric equipment is shorter than a distance between the switches and the electric equipment, a charging unit charging the capacitor before the switches are turned on, a detection section connected to the power line at a connecting point where a distance to the DC power supply is shorter than a distance between the switches and the DC power supply, and detecting a change in an electric potential of the connecting point, and a determination section determining whether a short-circuit fault has occurred in any one of the switches based on a difference in the electric potential of the connecting point between before and after the capacitor is charged.

Abstract translation: 提供了一种故障检测系统，其包括连接在直流电源和电气设备之间的电力线，分别提供给电力线的开关，在与电气设备的距离短于距离的位置处连接到电力线的电容器 在开关和电气设备之间，充电单元在开关接通之前对电容器充电，在与直流电源的距离短于开关之间的距离的连接点处连接到电力线的检测部分和 直流电源，检测连接点的电位变化，以及判定部，根据所述连接点的电位差，确定是否发生了任何一个开关中的短路故障 在电容器充电之前和之后。