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公开(公告)号：US10094879B2
公开(公告)日：2018-10-09
申请号：US15105944
申请日：2014-01-20
发明人： Takahide Terada , Mutsumi Kikuchi
IPC分类号： G01N27/416 , G01R31/36 , H01M10/48 , H02J50/80 , H02J50/10 , G08B21/18 , H02J7/02 , H01M10/42
摘要： To provide a system for controlling power supplies in a device including batteries 12, 13, and 14 by wireless signals with high reliability. The system includes the batteries 12, 13, 14, a power supply control device 1 supplied with power from the batteries 12, 13, and 14, and a controller 15 for making wireless communication with the power supply control device 1. The power supply control device 1 includes a startup unit 37 for receiving a wireless startup signal transmitted from the controller 15 and controlling power supplying from the batteries to the power supply control device, and a communication unit 10 for making wireless communication with the controller. While the startup unit 37 is receiving the wireless startup signal, wireless communication is made by the communication unit 10.
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公开(公告)号：US11418042B2
公开(公告)日：2022-08-16
申请号：US16970009
申请日：2019-01-18
发明人： Tatsumi Yamauchi , Hikaru Miura , Mutsumi Kikuchi , Akihiro Machida , Masahiro Ueda , Kenichiro Tsuru
摘要： A battery management unit capable of more reliably turning off a high-voltage relay. A battery management unit 1 includes a high-voltage relay 5 serving as a switch unit that turns on/off electrical connection between a high-voltage battery 102, which is a secondary battery, and an external device, and a power source IC 6 serving as a disconnection control unit having a first disconnection processing function of turning off the high-voltage relay 5 at the time of abnormality of the battery management unit 1 and a second disconnection processing function of detecting an abnormality of the first disconnection processing function and turning off the high-voltage relay 5.
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公开(公告)号：US11198352B2
公开(公告)日：2021-12-14
申请号：US16604196
申请日：2018-04-12
发明人： Itaru Naya , Seiji Ishida , Ken Takeuchi , Mutsumi Kikuchi
摘要： A relay (25) connects and disconnects an electrical circuit to which an inverter (16) and an electricity storage device (19) are connected. A BCU (22) controls the electricity storage device (19). An HC (27) controls an electric motor (15), the inverter (16) and the BCU (22). The HC (27) and the BCU (22) respectively have FET switches (30, 31) for controlling supply and stop of the excitation current in the relay (25). When the electricity storage device (19) is determined to be in an abnormal state, the BCU (22) transmits an abnormal signal to the HC (27), and when a predetermined time has elapsed, turns off (opens) the first FET switch (30) of the BCU (22). The HC (27) executes stop processing based upon the abnormal signal received from the BCU (22) and then turns off (opens) the second FET switch (31) of the HC (27).
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公开(公告)号：US10788539B2
公开(公告)日：2020-09-29
申请号：US14784440
申请日：2013-04-26
发明人： Hikaru Miura , Akihiko Kudoh , Mutsumi Kikuchi , Tomonori Kanai
IPC分类号： G01R31/396 , G01R31/3835 , B60L3/00 , H02J7/00 , B60L58/20 , B60L58/10 , G01R19/00 , G01R31/36 , H01M10/42
摘要： Provided are a battery monitoring device capable of suppressing a current flowing to individual battery cells and enhancing the safety thereof, even when there is a short circuit, for example, in a connection line connecting substrates having integrated circuits mounted thereon and a substrate having a microcomputer mounted thereon or a connection line connecting the substrates having the integrated circuits mounted thereon, and a battery system using the same. Resistors are provided in a positive electrode input line 13a connecting a positive electrode side of a battery pack group 200 and a total voltage detecting unit 13 and/or a negative electrode input line 13b connecting a negative electrode side of the battery pack group 200 and the total voltage detecting unit 13 and the resistors of the positive electrode input line 13a and/or negative electrode input line 13b are arranged on individual cell monitoring circuit boards 31 and 32.
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公开(公告)号：US10554054B2
公开(公告)日：2020-02-04
申请号：US15483423
申请日：2017-04-10
发明人： Kenji Kubo , Akihiko Kudo , Mutsumi Kikuchi , Gosuke Shibahara
摘要： A battery system includes a battery module that is constituted with a plurality of serially connected battery cells, a plurality of integrated circuits that group the battery cells so as to perform processing on battery cells in each group, a first transmission path through which a command signal is transmitted via a first insulating circuit from a higher-order control circuit that controls the integrated circuits to a highest-order integrated circuit of the integrated circuit, a second transmission path through which a data signal collected by the integrated circuits is transmitted from the highest-order integrated circuit to a lowest-order integrated circuit, and a third transmission path through which the data signal is transmitted from the lowest-order integrated circuit to the higher-order control circuit via a second insulating circuit.
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公开(公告)号：US10454283B2
公开(公告)日：2019-10-22
申请号：US15596700
申请日：2017-05-16
发明人： Akihiko Kudo , Mutsumi Kikuchi , Akihiko Emori
摘要： A battery system monitoring apparatus for monitoring a cell group having a plurality of battery cells, and includes a cell controller IC which monitors and controls the states of the plurality of battery cells. A battery controller controls the cell controller IC and a plurality of voltage detection lines measure the voltage across the terminals of the battery cell. The voltage detection lines connect positive and negative electrodes of the battery cell, respectively, to a plurality of voltage input terminals of the cell controller IC. A power line connects the positive electrode of the battery cell having the highest potential among the plurality of battery cells to a power supply terminal of the cell controller IC and a ground line which connects the negative electrode of the battery cell having the lowest potential among the plurality of battery cells to a ground terminal of the cell controller IC.
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公开(公告)号：US10147983B2
公开(公告)日：2018-12-04
申请号：US15116703
申请日：2015-01-21
摘要： A secondary battery system capable of acquiring an SOC of a battery with a simple computation without acquiring battery characteristics is to be provided. The secondary battery system according to the present invention is adapted to acquire a momentary SOC (charging SOC) by obtaining an initial value of an SOC from a CCV acquired during a charging period and adding an integrated value of a charge or discharge current to the initial value of the SOC, acquire a momentary SOC (discharging SOC) by obtaining an initial value of an SOC from a CCV acquired during a discharging period and adding an integrated value of a charge or discharge current to the initial value of the SOC, and acquire an SOC close to a true value by averaging the charging SOC and the discharging SOC.
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公开(公告)号：US10101404B2
公开(公告)日：2018-10-16
申请号：US15302187
申请日：2015-04-09
发明人： Mutsumi Suzuki , Mutsumi Kikuchi
IPC分类号： G01R31/36
摘要： A battery monitoring device includes a first voltage measurement unit, a second voltage measurement unit, a current measurement unit, a cell voltage ratio calculation unit, a cell voltage calculation unit, and a trigger signal generation unit. The cell voltage ratio is a ratio of an individual cell voltage measurement value to a total sum of all cell voltage measurement values. The cell voltage measurement value is equal to the cell voltage ratio multiplied by the total voltage of all of the battery cells constituting the battery pack.
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公开(公告)号：US09880224B2
公开(公告)日：2018-01-30
申请号：US14784330
申请日：2013-04-19
发明人： Akihiko Kudo , Mutsumi Kikuchi , Tomonori Kanai
CPC分类号： G01R31/3606 , B60L11/1851 , G01R31/362 , G01R31/3658
摘要： A battery system monitoring device includes a plurality of battery monitoring circuits, which is respectively provided in cell groups, and a balancing resistor. Each of the battery monitoring circuits includes a cell voltage measurement unit to measure a cell voltage of each single battery cell at predetermined timing, a discharge switch to switch a state of a discharge current which flows from each single battery cell through the balancing resistor, and a balancing control unit configured to control the discharge switch. A filter circuit is connected between the cell voltage measurement unit and each single battery cell. The cell voltage measurement unit determines whether a cell voltage is measured within a transient response period corresponding to a time constant of the filter circuit and corrects a measurement value of a cell voltage by using a correction value correcting a result of the determination.
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公开(公告)号：US09755453B2
公开(公告)日：2017-09-05
申请号：US14758051
申请日：2013-01-25
发明人： Tomonori Kanai , Akihiko Kudoh , Hikaru Miura , Mitsuo Noda , Mutsumi Kikuchi
CPC分类号： H02J7/007 , H01M10/482 , H01M2010/4271 , H01M2220/20 , H02J7/0016 , H02J7/0021 , H02J7/0026 , Y02T10/7005 , Y02T10/7055 , Y02T10/7061 , Y02T90/16
摘要： A cell controller in a battery-monitoring device that monitors an assembled battery having a single cell group or a plurality of cell groups, each made up with a plurality of battery cells connected in series, includes: a startup terminal to which a first discharge resistor is connected and a startup voltage is applied; and a cell-balancing unit that executes cell balancing operation in order to adjust charge levels of the plurality of battery cells during a time period through which the startup voltage remains equal to or greater than a predetermined voltage, wherein: the startup voltage is applied for a predetermined length of time by a first timer unit that includes a passive element capable of accumulating electric energy and capable of discharging electric energy to the startup terminal.
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