公开(公告)号：US06794876B2

公开(公告)日：2004-09-21

申请号：US10365519

申请日：2003-02-13

申请人： Tomohiro Kawaguchi ,  Shuji Satake

发明人： Tomohiro Kawaguchi ,  Shuji Satake

IPC分类号： G01N27416

CPC分类号： G01R31/3637 ,  B60K6/28 ,  B60L11/1851 ,  B60W10/26 ,  B60W20/00 ,  B60W2510/244 ,  H01M10/48 ,  Y02T10/7005 ,  Y02T10/705

摘要： Measuring device measures a terminal voltage of the battery in an open circuit state in a specific cycle after completion of a charge or discharge of the battery and collecting device collects the measured terminal voltage. Computing device computes a voltage value, to which a power approximation expression asymptotically approaches, as an assumed open circuit voltage of each time period from the collected terminal voltage, wherein the power approximation expression has an exponent of −0.5 or about −0.5 and is determined on the basis of the terminal voltage of each time period of a plurality of predetermined time periods. The assumed open circuit voltage of a time period, in which its difference from the assumed open circuit voltage of a neighboring time period becomes minimum, is estimated as an open circuit voltage.

摘要翻译： 测量装置在电池充电或放电完成之后，在特定周期内以开路状态测量电池的端子电压，并且收集装置收集测量的端子电压。 计算设备将功率近似表达式渐近地接近的电压值计算为从收集的端电压的每个时间段的假定开路电压，其中功率近似表达式具有-0.5或约-0.5的指数并且被确定 基于多个预定时间段的每个时间段的终端电压。 与相邻时间段的假定开路电压的差值变得最小的时间段的假设开路电压被估计为开路电压。

公开(公告)号：US07034504B2

公开(公告)日：2006-04-25

申请号：US10436139

申请日：2003-05-13

申请人： Youichi Arai ,  Shuji Satake ,  Michito Enomoto ,  Tomohiro Kawaguchi ,  Ken Ito

发明人： Youichi Arai ,  Shuji Satake ,  Michito Enomoto ,  Tomohiro Kawaguchi ,  Ken Ito

IPC分类号： H01M10/44

CPC分类号： G01R31/3648 ,  G01R31/362 ,  G01R31/3662

摘要： A microcomputer monitors, on the basis of outputs from a current sensor and voltage sensor, a voltage drop due to an internal resistance when the drop in the terminal voltage due to polarization occurring during the discharge of a battery is saturated, and a dischargeable capacity of the battery corresponding to the value resulting when the saturated voltage drop of the terminal voltage is subtracted from the chargeable capacity of the battery. Such a configuration provide a battery status monitoring device capable of knowing the battery status correctly, a saturation polarization detecting method which is useful to know the charging state of the battery and a dischargeable capacity detecting method.

摘要翻译： 微型计算机根据来自电流传感器和电压传感器的输出，监测由于在电池放电期间发生的极化引起的端子电压下降饱和时由于内部电阻引起的电压降，并且可放电容量 电池对应于从电池的可充电容量中减去端子电压的饱和电压降所产生的值。 这种配置提供能够正确地知道电池状态的电池状态监视装置，用于知道电池的充电状态的可用的饱和极化检测方法和可放电容量检测方法。

公开(公告)号：US06850038B2

公开(公告)日：2005-02-01

申请号：US10437454

申请日：2003-05-14

申请人： Youichi Arai ,  Shuji Satake ,  Yoshiya Miyazaki

发明人： Youichi Arai ,  Shuji Satake ,  Yoshiya Miyazaki

IPC分类号： G01N27/416 ,  H01M10/48 ,  H02J7/00

CPC分类号： H01M10/48

摘要： A method of estimating a state of charge of a battery, a method of estimating an open circuit voltage of a battery, and a method and device for computing a degradation degree of a battery are provided. As a degradation degree, a ratio of a total electrical quantity chargeable or dischargeable of a battery at any time point to an initial electrical quantity that is a total electrical quantity chargeable or dischargeable of the battery upon non-degradation is computed, and by using the degradation degree, a state of charge or an open circuit voltage of the battery is accurately estimated.

摘要翻译： 提供一种估计电池的充电状态的方法，估计电池的开路电压的方法以及用于计算电池的劣化程度的方法和装置。 作为劣化程度，计算电池的任意时间点的电量的总电量与不劣化时的电池的可充放电的总电量的初始电量的比例，并且通过使用 精确地估计电池的劣化程度，充电状态或开路电压。

公开(公告)号：US20070096743A1

公开(公告)日：2007-05-03

申请号：US10561792

申请日：2004-06-15

申请人： Youichi Arai ,  Tsutomu Saigo ,  Shuji Satake ,  Hisashi Takemoto ,  Ken Ito ,  Yoshiya Miyazaki

发明人： Youichi Arai ,  Tsutomu Saigo ,  Shuji Satake ,  Hisashi Takemoto ,  Ken Ito ,  Yoshiya Miyazaki

IPC分类号： G01N27/416

CPC分类号： G01R31/392 ,  G01R31/386

摘要： A method and apparatus for judging deterioration of a battery are provided, thereby a correct judgement for the deterioration of the battery can be timely carried out so as to replace the battery with another if it is necessary. The apparatus for judging deterioration of a battery that supplies electric power to a load includes: storing means 23c for storing a minimum guaranteed voltage predetermined as a minimum value of a terminal voltage of the battery 13 when a given current flows into the load; voltage drop computing means 23a for computing a voltage drop due to an ohmic resistance and polarization resistance of the battery occurred in response to a discharge of the battery when a given current flows from the battery into the load; first comparing means 23a for comparing the minimum guaranteed voltage stored in the storing means 23c with a first difference value, which is obtained by subtracting the voltage drop computed by the voltage drop computing means 23a from an open circuit voltage that corresponds to a state of charge upon a start of the discharge of the battery; and first deterioration judging means 23a for judging that the battery is deteriorated if the first difference value becomes equal to or smaller than the minimum guaranteed voltage and the state of charge upon the start of the discharge exceeds a first specific value as a result of the comparison by the first comparing means 23a.

摘要翻译： 提供了一种用于判断电池劣化的方法和装置，因此如果需要，可以及时地进行电池劣化的正确判断，以便用另一个替换电池。 用于判断向负载供给电力的电池的劣化的装置包括：存储装置23c，用于存储当给定电流流入负载时预定为电池13的端子电压的最小值的最小保证电压; 电压降计算装置23a，用于当给定的电流从电池流入负载时响应于电池的放电而计算由于电池的欧姆电阻和极化电阻引起的电压降; 第一比较装置23a，用于将存储在存储装置23c中的最小保证电压与第一差分值进行比较，第一差值是通过从由电压降运算装置23a计算的电压降从与 开始电池放电时的充电状态; 以及如果第一差分值变得等于或小于最小保证电压，则判断电池劣化的第一劣化判定装置23a，作为放电开始时的放电开始时的充电状态超过第一特定值 通过第一比较装置23a进行比较。

公开(公告)号：US06696818B2

公开(公告)日：2004-02-24

申请号：US10262889

申请日：2002-10-03

申请人： Youichi Arai ,  Shuji Satake

发明人： Youichi Arai ,  Shuji Satake

IPC分类号： H01M1046

CPC分类号： G01R31/3624 ,  G01R31/006 ,  G01R31/3662

摘要： A charging efficiency, which is a ratio of an electrical quantity charged in a battery as an electromotive force to a total electrical quantity supplied to the battery, is computed at a plurality of measuring points between a start and an end of charging of the battery. A resistance difference of the battery between a resistance at the charge start point and a resistance at one of the measuring points is obtained, and a full charged state resistance is obtained at a full charged state of the battery. By using a ratio of the resistance difference to the full charged state resistance, a charging efficiency of the battery is computed at the one of the measuring points. The battery is in an active state where no passivating film is formed on poles of the battery. A charged electrical quantity of the battery is obtained based on the charging efficiencies sequentially obtained during the charging of the battery when the battery is in the active state. In the mean time, a charged electrical quantity of the battery is obtained based on an integration of a charging current multiplied by a corresponding charging time during a transition period in which a passivating film remains on the poles of the battery before the charging current sufficiently breaks the passivating film.

摘要翻译： 在电池的充电开始和结束之间的多个测量点处计算作为电动势的电池充电的电量与供给电池的总电量的充电效率。 获得充电开始点之间的电阻与一个测量点的电阻之间的电池电阻差，并且在电池的满充电状态下获得满充电状态电阻。 通过使用电阻差与满充电状态电阻的比率，在所述一个测量点计算电池的充电效率。 电池处于活性状态，在电池极上不形成钝化膜。 基于当电池处于活动状态时在电池充电期间顺序获得的充电效率，获得电池的充电电量。 同时，电池的充电电量基于在充电电流充分断开之前在电池极上残留钝化膜的过渡期间的充电电流乘以相应充电时间的积分而获得 钝化膜。

公开(公告)号：US06531875B2

公开(公告)日：2003-03-11

申请号：US10002114

申请日：2001-12-05

申请人： Shuji Satake

发明人： Shuji Satake

IPC分类号： G01N2746

CPC分类号： G01R31/3637 ,  G01R31/3651

摘要： A vehicle battery's open circuit voltage estimating method and a system therefor for relatively correctly estimating an open circuit voltage of a battery on a vehicle within a relatively short period after completion of the charge or the discharge also without a temperature correction is provided. A disconnected voltage measuring means 23a-1 measures a disconnected voltage of the battery multiple times in a definite period of time after a predetermined period of time after completion of charge or discharge of the battery. An approximate expression determining means 23a-2 determines a power approximate expression having a negative power number by using a difference value of the measured disconnected voltage and an assumed open circuit voltage. And, an arithmetic operation controlling means 23a-3 makes the approximate expression determining means update the assumed open circuit voltage and determine the power approximate expression repeatedly until the power number of the determined power approximate expression becomes −0.5 or about −0.5, and the assumed open circuit voltage is estimated to be the open circuit voltage when the power number becomes −0.5 or about −0.5.