公开(公告)号：US20150108992A1

公开(公告)日：2015-04-23

申请号：US14515932

申请日：2014-10-16

Applicant: DENSO CORPORATION

Inventor： Masakazu KOUDA ,  Shunichi MIZOBE ,  Hayato MIZOGUCHI

IPC: G01R31/36

CPC classification number: G01R31/3842 ,  G01R31/396

Abstract: In a battery monitoring system, an input current flowing through an input portion of an isolator member is larger than an output current flowing through an output portion of the isolator member. The output portion is electrically isolated from the input portion. The input and output portions of the isolator member are connected respectively to first and second circuits included in a group of the control circuit and the plurality of monitoring circuits. The first and second circuits are selected for the isolator member, The first and second circuits respectively serve as a sender and a receiver. The isolator member transfers serial data sent from the sender to the receiver while the sender and the receiver are electrically isolated from each other. The isolator is mounted on a substrate included in the control and monitoring substrates. The receiver is mounted on the substrate.

Abstract translation: 在电池监视系统中，流过隔离器构件的输入部分的输入电流大于流过隔离器构件的输出部分的输出电流。 输出部分与输入部分电隔离。 隔离器构件的输入和输出部分分别连接到包括在一组控制电路和多个监视电路中的第一和第二电路。 第一和第二电路被选择用于隔离器构件。第一和第二电路分别用作发送器和接收器。 隔离器成员将从发送器发送的串行数据传送到接收器，同时发送器和接收器彼此电隔离。 隔离器安装在包括在控制和监测基板中的基板上。 接收器安装在基板上。

公开(公告)号：US20220352569A1

公开(公告)日：2022-11-03

申请号：US17863696

申请日：2022-07-13

Applicant: DENSO CORPORATION

Inventor： Naoto YAMASHITA ,  Masakazu KOUDA ,  Fumihiko HORI ,  Shunichi KUBO

IPC: H01M10/48 ,  H01M10/42

Abstract: In a battery system including an assembled battery having a plurality of battery cells connected in series, each of a plurality of monitoring units includes a voltage classification unit configured to classify a terminal voltage between each pair of input terminals in the monitoring unit as a cell voltage or as a zero voltage that is a terminal voltage of substantially zero. The input terminals in each of all or all but one of the monitoring units include at least one specific terminal pair for acquiring the zero voltage at a different position and/or include a different number of specific terminal pairs for acquiring the zero voltage. Each of the plurality of monitoring units further includes an identifier generation unit configured to generate an identifier based on at least one of the position of the at least one specific terminal pair and the number of specific terminal pairs.

公开(公告)号：US20200235442A1

公开(公告)日：2020-07-23

申请号：US16744462

申请日：2020-01-16

Applicant: DENSO CORPORATION

Inventor： Naoto YAMASHITA ,  Masakazu KOUDA ,  Fumihiko HORI ,  Shunichi KUBO

IPC: H01M10/48 ,  H01M10/42

Abstract: In a battery system including an assembled battery having a plurality of battery cells connected in series, each of a plurality of monitoring units includes a voltage classification unit configured to classify a terminal voltage between each pair of input terminals in the monitoring unit as a cell voltage or as a zero voltage that is a terminal voltage of substantially zero. The input terminals in each of all or all but one of the monitoring units include at least one specific terminal pair for acquiring the zero voltage at a different position and/or include a different number of specific terminal pairs for acquiring the zero voltage. Each of the plurality of monitoring units further includes an identifier generation unit configured to generate an identifier based on at least one of the position of the at least one specific terminal pair and the number of specific terminal pairs.

公开(公告)号：US20230099142A1

公开(公告)日：2023-03-30

申请号：US18073744

申请日：2022-12-02

Applicant: DENSO CORPORATION

Inventor： Masaaki KITAGAWA ,  Masakazu KOUDA

IPC: H02J7/00

Abstract: A power supply system includes an assembled battery, a positive electrode-side power supply path, a negative electrode-side power supply path, and a capacitor unit. The capacitor unit includes a series connection of a plurality of capacitors having one end connected to the positive electrode power supply path and the other end connected to the negative electrode power supply path. An inter-capacitor connection point located between the capacitors forming the series connection is electrically connected to the inter-cell connection point.

公开(公告)号：US20190181658A1

公开(公告)日：2019-06-13

申请号：US16215388

申请日：2018-12-10

Applicant: DENSO CORPORATION

Inventor： Masaaki KITAGAWA ,  Masahiko ITO ,  Masakazu KOUDA ,  Isao ISHIBE

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

Abstract: A battery control unit is adapted for a power supply system provided with a storage battery series-connected battery cells, a filter circuit, a discharge circuit, and a connection member connecting between the battery cell and the filter circuit.The battery control unit includes a voltage detection unit detecting voltage at the battery cell where noise is eliminated by the filter circuit, the voltage being detected immediately before/after a discharging is performed through the discharge circuit; a correction value calculation unit that calculates an amount of a voltage drop at the connection member when a discharging is performed through the discharge circuit, to be a correction value; and a voltage calculation unit that calculates voltage of the battery cell by adding the correction value calculated by the correction value calculation unit to a post-discharge voltage detected immediately after the discharging by the voltage detection unit.

公开(公告)号：US20210296714A1

公开(公告)日：2021-09-23

申请号：US17339265

申请日：2021-06-04

Applicant: DENSO CORPORATION

Inventor： Naoto YAMASHITA ,  Masahiko ITO ,  Masakazu KOUDA ,  Hisanaga ONISHI

IPC: H01M10/48 ,  H02J7/00 ,  G01R31/3835 ,  H01M50/51 ,  H01M10/42

Abstract: A battery system comprises a plurality of battery modules, each of the battery modules includes an assembled battery configured to include a plurality of battery cells connected in series, a monitoring unit configured to monitor the assembled battery, and an external member configured to be electrically connected to the monitoring unit, and the monitoring unit of each of the battery modules has a generation unit configured to generate, based on an electric signal input from the external member, an identification information item on the corresponding one of the battery modules, the identification information items of the respective battery modules being different from one another.

公开(公告)号：US20210293896A1

公开(公告)日：2021-09-23

申请号：US17337957

申请日：2021-06-03

Applicant: DENSO CORPORATION

Inventor： Ryota KUBOKAWA ,  Masakazu KOUDA ,  Toru WAKIMOTO ,  Yusuke SHINDO ,  Akira SUMI

IPC: G01R31/52 ,  G01R27/18

Abstract: In an insulation resistance detection apparatus, a voltage determiner determines whether a detection voltage, which has changed by at least a preset value, becomes stable at around a changed voltage value. A resistance determiner determines a value of an insulation resistance between a ground portion and a power-supply path based on a currently sampled value of the detection voltage instead of a moving average in response to determination that the detection voltage, which has changed by at least the preset value, becomes stable at around the changed voltage value.

公开(公告)号：US20210247455A1

公开(公告)日：2021-08-12

申请号：US17244376

申请日：2021-04-29

Applicant: DENSO CORPORATION

Inventor： Toshiki KOJIMA ,  Masakazu KOUDA ,  Hayato MIZOGUCHI

IPC: G01R31/388 ,  G01R31/364 ,  H01M10/48 ,  H01M10/42

Abstract: A battery monitoring apparatus is used in a battery assembly equipped with a plurality of batteries connected in series with each other. A plurality of measuring lines are mounted on a given layer of a multi-layer substrate and work to measure electrical potentials developed at terminals of the batteries, respectively. The measuring lines are classified into measuring line groups in order of electrical potential from lowest to highest. A plurality of solid patterns are arranged on one of layers of the multi-layer substrate other than the given layer and provided one for each of the measuring line groups. The solid patterns overlap the measuring line groups in planar view in a stacking direction of the multi-layer substrate. The solid patterns are arranged away from each other. The higher electrical potentials of the measuring line groups are, the higher electrical potentials of the corresponding solid patterns are.

公开(公告)号：US20210293865A1

公开(公告)日：2021-09-23

申请号：US17340906

申请日：2021-06-07

Applicant: DENSO CORPORATION

Inventor： Masakazu KOUDA ,  Ryota KUBOKAWA ,  Yusuke SHINDO ,  Toru WAKIMOTO

IPC: G01R27/02 ,  B60L3/00 ,  G01R31/52 ,  G01R27/18

Abstract: An insulation resistance detection device detects a voltage at a connection point between a coupling capacitor and a resistance in the case where a frequency signal is outputted to the resistance, and detects an insulation resistance between a ground portion and a power supply path based on a moving average value of a detection voltage. The insulation resistance detection device includes a first determination unit, a resistance detection unit, and a second determination unit. In response to a determination that the pulsation of the detection voltage is attenuated, the resistance detection unit detects the insulation resistance based on, instead of a first moving average value, a second moving average value calculated by using the detection voltage in a second range including a smaller number of detection voltages than in the first range.

公开(公告)号：US20210278468A1

公开(公告)日：2021-09-09

申请号：US17330863

申请日：2021-05-26

Applicant: DENSO CORPORATION

Inventor： Toshiki KOJIMA ,  Masakazu KOUDA ,  Akira SUMI

IPC: G01R31/382 ,  G01R31/396 ,  H01M10/48 ,  H02J7/02 ,  B60L58/12

Abstract: A battery system includes a plurality of battery modules and a control apparatus. The battery includes a battery group that includes two or more battery modules including battery units and battery monitoring units. The battery monitoring units of the battery modules being connected to each other via a communication line. The battery modules perform wired communication via the communication line. The battery group further includes a wireless receiving unit and a wireless transmitting unit. The wireless receiving unit wirelessly receives a command signal transmitted from the control apparatus. The wireless transmitting unit wirelessly transmits, to the control apparatus, a data signal including module identification information differing for each battery module. In the battery group, the wireless receiving unit is provided in a single battery module of the battery modules and the wireless transmitting unit is provided in a single battery module of the battery modules.