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公开(公告)号：US20190242948A1
公开(公告)日：2019-08-08
申请号：US16328953
申请日：2017-07-28
发明人： Daiki KOMATSU , Kei SAKABE , Masahiro YONEMOTO , Shin YAMAUCHI , Keiichiro OHKAWA , Ryohhei NAKAO
IPC分类号： G01R31/367 , H02J7/00 , B60L58/12 , B60L58/16
CPC分类号： G01R31/367 , B60K6/28 , B60L50/16 , B60L50/50 , B60L58/12 , B60L58/16 , B60W10/26 , B60W20/11 , B60W20/13 , H01M10/48 , H02J7/00 , H02J7/0031 , H02J2007/0037 , Y02T10/7005 , Y02T10/7044 , Y02T10/7077
摘要： In an existing permissible current computation algorithm, an excessive current is caused to flow by controlling the battery having a steep change region in the battery characteristic. On the other hand, when the current is reduced and the output is suppressed, the battery performance cannot be sufficiently utilized. Moreover, with countermeasures to increase the number of data points, the amount of data increases and thus can not be installed in the microcomputer. A battery control device that computes a permissible current of a battery having a battery characteristic non-steep change region having a small battery characteristic change and a battery characteristic steep change region having a battery characteristic change greater than in the battery characteristic non-steep change region, in which in a case where the battery enters the battery characteristic steep change region after a predetermined time from a present state, a battery characteristic value is calculated by using an absolute value of a slope greater than an absolute value of a slope in the present battery characteristic.
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公开(公告)号：US20180037130A1
公开(公告)日：2018-02-08
申请号：US15555126
申请日：2016-02-26
发明人： Keiichiro OHKAWA , Ryohhei NAKAO
CPC分类号： B60L11/1861 , B60L11/08 , B60L11/14 , B60L11/1857 , B60L2240/547 , B60L2240/549 , B60L2260/42 , B60W20/50 , G01R31/36 , G01R31/3624 , H01M10/44 , H01M10/48 , H02J7/00 , Y02T10/70 , Y02T10/7005 , Y02T10/705 , Y02T10/7077
摘要： A battery controller capable of increasing the number of chances of being able to acquire information on a secondary battery storage capacity and a vehicle system having the battery controller mounted thereon are provided. A battery controller 120 mounted on a vehicle system 200 includes a time point setting unit 153 that sets a first time point at which a first voltage difference dVa (=CCVa−OCVa) which is a difference obtained by subtracting a first open-circuit voltage OCVa from a first closed-circuit voltage CCVa is obtained and a second time point at which a second voltage difference dVb (=CCVb−OCVb) which is a difference obtained by subtracting a second open-circuit voltage OCVb from a second closed-circuit voltage CCVb is obtained and an absolute value of the difference from the first voltage difference dVa is equal to or smaller than a predetermined value.
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公开(公告)号：US20150357852A1
公开(公告)日：2015-12-10
申请号：US14655371
申请日：2014-01-27
CPC分类号： H02J7/0057 , B60L3/0046 , B60L3/12 , B60L11/1857 , B60L11/1861 , B60L2240/545 , B60L2240/547 , B60L2240/549 , B60L2260/44 , G01R31/3624 , G01R31/3651 , G01R31/3675 , G01R31/3679 , H01M10/48 , H02J7/0047 , H02J2007/005 , Y02T10/7005 , Y02T10/7044 , Y02T10/705
摘要： Provided is a battery control device that can accurately detect a state of charge even if characteristics relating to the state of charge change as a result of battery degradation. This battery control device is provided with map data describing the correspondence relationship between an open-circuit voltage and a state of charge of the battery and outputs different state-of-charge values for the same open-circuit voltage according to the amount of elapsed time.
摘要翻译： 提供一种电池控制装置，即使由于电池劣化而与电荷状态有关的特性变化，也能够精确地检测电荷状态。 该电池控制装置设置有描述开路电压和电池的充电状态之间的对应关系的地图数据，并根据经过的时间量为相同的开路电压输出不同的充电状态值 。
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4.发明申请公开(公告)号：US20190004115A1
公开(公告)日：2019-01-03
申请号：US16064091
申请日：2017-01-10
发明人： Yohei NAKAMURA , Keiichiro OHKAWA
摘要： A battery management device includes: an SOCv calculation unit that calculates a state of charge using voltage across both ends of a battery; an SOCi calculation unit calculates a state of charge by integrating currents flowing in the battery; an SOCw calculation unit performs weighted addition of the battery's state of charges calculated by the SOCv and the SOCi calculation unit. An SOCi biased time calculation unit calculates an SOCi biased time based on one or a plurality of elapsed time from the end of a previous system operation or the end of charging or discharging during the previous system operation to the start of the current system, temperature, degree of degradation, and polarization voltage of the battery. The SOCw increases a weight of the state of charge of the battery calculated by the SOCi calculation while the elapsed time from the activation is within the SOCi biased time.
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公开(公告)号：US20180375176A1
公开(公告)日：2018-12-27
申请号：US16060281
申请日：2016-12-02
发明人： Kei SAKABE , Keiichiro OHKAWA , Ryohhei NAKAO , Masahiro YONEMOTO
摘要： To sufficiently exert charging and discharging performance of a cell while reliably protecting the cell, a battery controller determines ΔVlimit which is a limit value for a difference between a CCV and an OCV of a cell module, which is a secondary cell, and determines at least one of an upper limit voltage and a lower limit voltage of the cell module. An allowable current of the cell module is calculated based on the ΔVlimit and at least one of the upper limit voltage and the lower limit voltage determined in this manner.
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公开(公告)号：US20180210036A1
公开(公告)日：2018-07-26
申请号：US15738281
申请日：2016-08-08
发明人： Shin YAMAUCHI , Kei SAKABE , Masahiro YONEMOTO , Takanori YAMAZOE , Keiichiro OHKAWA , Ryohhei NAKAO
CPC分类号： G01R31/396 , B60L3/12 , B60L58/12 , B60L58/16 , B60L2240/545 , B60L2240/549 , G01R31/382 , G01R31/392 , H01M10/425 , H01M10/44 , H01M10/48 , H01M2010/4271 , H01M2010/4278 , H02J7/00 , H02J7/0063 , H02J7/008 , H02J7/0091 , H02J2007/0098
摘要： To perform charge/discharge control of a storage battery at an appropriate timing. In a battery controller, a battery information acquisition unit acquires information on the storage battery. A degradation progression rate calculation unit calculates a degradation progression rate of the storage battery based on the information acquired by the battery information acquisition unit. A limit value setting unit sets a limit value for controlling charge/discharge of the storage battery based on the degradation progression rate calculated by the degradation progression rate calculation unit. A timing determination unit determines a timing at which the limit value needs to be output based on the information acquired by the battery information acquisition unit. A limit value output unit outputs the limit value to a host controller based on the timing determined by the timing determination unit.
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公开(公告)号：US20180358663A1
公开(公告)日：2018-12-13
申请号：US15743979
申请日：2016-08-08
发明人： Masahiro YONEMOTO , Kei SAKABE , Takanori YAMAZOE , Shin YAMAUCHI , Keiichiro OHKAWA , Ryohhei NAKAO
摘要： Provided is a battery management device capable of effectively utilizing battery performance while securing battery life. The battery management device includes: a divergence amount calculation unit that calculates a divergence amount between a life target value or a degradation amount target value of a storage battery, which is a secondary battery, and a life prediction value or a degradation amount prediction value according to use history of the storage battery in an arbitrary period; and a limit value change unit that changes charge/discharge limit values for controlling degradation of the storage battery based on the divergence amount. The limit value change unit includes a first limit value calculation unit that calculates a first limit value set that is a combination of the charge/discharge limit values for each of a plurality of types of control parameters that change in correlation with each other based on the divergence amount.
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公开(公告)号：US20180226824A1
公开(公告)日：2018-08-09
申请号：US15738994
申请日：2016-04-27
摘要： A battery control device capable of obtaining an allowable charge/discharge current value can further accurately reflect a polarization state of a battery. A battery controller includes a first allowable current value calculation unit, a battery equivalent circuit model, and a correction amount calculation unit. Assuming a non-polarization state, a current limit value of the battery based on an open circuit voltage and upper and lower limit voltages set in the battery, the first allowable current value calculation unit calculates a first allowable current value Imax1. The battery equivalent circuit model estimates a polarization state of the battery when the current limit value is being calculated. The correction unit calculates an allowable current value correction value based on the estimated polarization state for correcting Imax1. A second allowable current value Imax2 which is the corrected first allowable current value is output as an allowable charge/discharge current value of the battery.
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9.发明申请公开(公告)号：US20170082694A1
公开(公告)日：2017-03-23
申请号：US15310586
申请日：2015-04-28
摘要： A secondary-battery monitoring device includes: a use-state memory device that stores a transition of a load parameter indicating a use state of a secondary battery; and a battery capacity prediction device that predicts a temporal change of a battery capacity of the secondary battery on the basis of a prediction function. The prediction function is derived from a relation between growth of a film formed in an electrode surface of the secondary battery and a reduction of a precursor component of the film which is contained in an electrolyte of the secondary battery. The battery capacity prediction device determines a coefficient of the prediction function on the basis of the transition of the load parameter which is stored in the use-state memory device, and predicts the temporal change of the battery capacity of the secondary battery on the basis of the prediction function which uses the coefficient.
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公开(公告)号：US20190023132A1
公开(公告)日：2019-01-24
申请号：US16082805
申请日：2017-02-01
摘要： The state of internal resistance is appropriately expressed for a battery being energized. A battery management system includes a battery information acquisition section, a voltage calculation section, a current fluctuation amount calculation section 109 and a resistance correction amount calculation section. The battery information acquisition section acquires a voltage value V of a storage battery being energized. The voltage calculation section acquires a predicted battery voltage value Vmodel of the storage battery being energized by a method different from that of the battery information acquisition section. The current fluctuation amount calculation section calculates a current fluctuation amount dI/dt of the storage battery per unit time. Based on the comparison result of the voltage value V and the predicted battery voltage value Vmodel and the current fluctuation amount dI/dt, the resistance correction amount calculation section corrects an equivalent circuit model expressing the internal state of the storage battery including a DC resistance component R0 and a polarization resistance component Rp.
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