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公开(公告)号：US06661231B1
公开(公告)日：2003-12-09
申请号：US09856467
申请日：2001-10-09
申请人： Youichi Arai , Tsutomu Saigo , Hideaki Kamohara
发明人： Youichi Arai , Tsutomu Saigo , Hideaki Kamohara
IPC分类号： G01N27416
CPC分类号： G01R31/3624 , G01R31/3648 , G01R31/3675
摘要： A method and apparatus are provided, by which a state of charge of a battery is accurately computed without being influenced by the polarization effect. An estimated voltage of the battery 13 in a constant load discharge with a predetermined large current value is estimated from a voltage-current characteristic when the discharge current of the constant load discharging process by the battery 13 that is in an equilibrium state is decreasing from the predetermined large current value corresponding to a maximum supplying electric power to the load. A difference between the estimated voltage and an open circuit voltage, which estimates the estimated voltage and is a terminal voltage of the battery 13 that is in an equilibrium state before the start of the constant load discharge by using the predetermined large current value, is calculated. Then, the difference is memorized by first memory means 27 for memorizing a residual voltage drop defining as the residual voltage drop due to a residual polarization at the end of the discharging process of the battery 13. The residual voltage drop memorized by the first memory means 27 is added to the estimated voltage of the battery 13, thereby a present charging capacity of the battery 13 is computed.
摘要翻译： 提供了一种方法和装置，通过该方法和装置可以精确地计算电池的充电状态而不受偏振效应的影响。 当处于平衡状态的电池13的恒定负载放电过程的放电电流从电池电流特性减小时，从电压 - 电流特性估计具有预定大电流值的恒定负载放电中的电池13的估计电压 预定的大电流值对应于向负载提供电力的最大值。 计算估计电压和开路电压之间的差异，该电压估算出通过使用预定大电流值在恒定负载放电开始之前处于平衡状态的电池13的估计电压并且是其终端电压 。 然后，差值由第一存储装置27存储，用于存储由于在电池13的放电过程结束时由于残余极化而定义为残余电压降的残余电压降。由第一存储装置存储的剩余电压降 27被添加到电池13的估计电压，由此计算电池13的当前充电容量。
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公开(公告)号：US06275008B1
公开(公告)日：2001-08-14
申请号：US09609768
申请日：2000-07-03
申请人： Youichi Arai , Tsutomu Saigo , Hideaki Kamohara
发明人： Youichi Arai , Tsutomu Saigo , Hideaki Kamohara
IPC分类号： H01M1046
CPC分类号： G01R31/3624 , G01R31/006 , G01R31/362 , G01R31/3648 , G01R31/3675 , G01R31/3693
摘要： A battery capacity detection system according to the invention is provided with: a temperature sensor for sensing a temperature of the battery; a full-charge voltage calculation section for calculating a voltage of the battery in a full charge state by using the temperature sensed by the temperature sensor; and an SOC calculation section for calculating an SOC of the battery by using the voltage of the battery in the full charge state calculated by using the temperature in the full-charge voltage calculation processing section.
摘要翻译： 根据本发明的电池容量检测系统设置有：用于感测电池温度的温度传感器; 全充电电压计算部分，用于通过使用由温度传感器感测的温度来计算充满电状态的电池的电压; 以及SOC计算部，其通过使用通过使用全充电电压计算处理部中的温度计算出的充满电状态的电池的电压来计算电池的SOC。
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公开(公告)号：US06518735B2
公开(公告)日：2003-02-11
申请号：US09985525
申请日：2001-11-05
IPC分类号： G01N27416
CPC分类号： G01R31/3624 , G01R31/3648 , G01R31/3662 , G01R31/3668
摘要： In an apparatus for measuring a pure resistance of an in-vehicle battery, a terminal voltage and a discharging current of the battery are measured when the discharging current flows from the battery. A first approximate equation of a voltage-current characteristic curve is acquired for an increasing discharging current, and a second approximate equation is the voltage-current characteristic curve is acquired for a decreasing discharging current. Two points providing equal synthesized resistances each composed of the pure resistance and polarization resistance component are set on the voltage-current characteristic curves represented by the first and the second approximate equations, respectively. The gradients between the two points in each of the voltage-current characteristic curves are corrected to provide two corrected gradients each exclusive of a voltage drop due to the polarization resistance component. The two corrected gradients are averaged to provide an average value which is measured as a pure resistance of the battery.
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公开(公告)号：US5848380A
公开(公告)日：1998-12-08
申请号：US790432
申请日：1997-01-29
申请人： Youichi Arai , Tsutomu Saigo
发明人： Youichi Arai , Tsutomu Saigo
IPC分类号： B60L3/00 , G01R19/165 , G01R31/00 , G01R31/36 , G01R19/00
CPC分类号： G01R31/005 , G01R31/3651 , G01R31/3624
摘要： As a simulation load is driven with an object cell, a cell discharge stop voltage is estimated by collecting data of a discharge current and a terminal voltage, processing the collected data to obtain an approximate linear function between the discharge current and the terminal voltage, substituting a first reference value into the linear function to estimate a first voltage, making a decision for the first voltage having reached a second reference value, responding to the decision for substituting a third reference value into the linear function to estimate a second voltage, and outputting the second voltage as a representative value of the discharge stop voltage.
摘要翻译： 由于模拟负载由对象单元驱动，通过收集放电电流和端子电压的数据来估计单元放电停止电压，处理收集的数据以获得放电电流和端子电压之间的近似线性函数，代替 响应于将第三参考值替换为线性函数以估计第二电压的决定，并且输出第一参考值以估计第一电压，并且对第一电压进行判定以达到第二参考值 第二电压作为放电停止电压的代表值。
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公开(公告)号：US5654630A
公开(公告)日：1997-08-05
申请号：US644577
申请日：1996-05-10
申请人： Kenichi Shimoyama , Youichi Arai , Tsutomu Saigo
发明人： Kenichi Shimoyama , Youichi Arai , Tsutomu Saigo
CPC分类号： G01R1/07 , G01R15/202
摘要： A sensor contactlessly driven by a single power supply is disclosed. A current flows in a resistor R.sub.L through the secondary winding of a coil in the direction corresponding to the direction of magnetic fluxes generated in the coil in accordance with discharge or charge mode of a main battery. The input terminal of a voltage follower is connected to the voltage-dividing point of a series circuit including resistors R.sub.1 and R.sub.2 and a reference voltage control circuit. The reference voltage control circuit changes the input voltage of the voltage follower in accordance with the direction of the current flowing in the resistor R.sub.L. It follows therefore that the measurement range is switched in accordance with discharge or charge mode of the main battery, with the result that the overall measurement range can be widened in spite of the fact that only a single power supply +Vcc is used.
摘要翻译： 公开了由单个电源非接触驱动的传感器。 A电流根据主电池的放电或充电模式沿与线圈中产生的磁通方向相对应的方向通过线圈的次级绕组流过电阻器RL。 电压跟随器的输入端子连接到包括电阻器R1和R2以及参考电压控制电路的串联电路的分压点。 参考电压控制电路根据在电阻器RL中流动的电流的方向改变电压跟随器的输入电压。 因此，根据主电池的放电或充电模式来切换测量范围，结果是尽管仅使用单个电源+ Vcc，总体测量范围可以扩大。
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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。
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公开(公告)号：US06624636B2
公开(公告)日：2003-09-23
申请号：US10080278
申请日：2002-02-22
IPC分类号： G01N27416
CPC分类号： B60K6/22 , B60K6/28 , B60K6/485 , B60W10/26 , G01R31/3631 , Y02T10/6226 , Y10S903/904 , Y10S903/907
摘要： A method and an apparatus for computing a charging state of a battery without being affected by an influence of polarization are provided. First computing means computes a voltage-current characteristic including the influence of the polarization during an decrease of a discharge current of the battery on the basis of a terminal voltage and discharge current measured while the battery carries out a constant load discharge with a current value large enough to cancel a charge-side polarization arisen in the battery at least just before the discharge. A second computing means shifts the voltage-current characteristic to a specific extent in the direction of a voltage coordinate axis. A residual voltage drop value in advance stored by storing means is added to a present estimated voltage value estimated by estimating means on the basis of the shifted voltage-current characteristic, thereby a present open circuit voltage of the battery is computed.
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公开(公告)号：US5734099A
公开(公告)日：1998-03-31
申请号：US778722
申请日：1996-12-27
申请人： Tsutomu Saigo , Kenichi Shimoyama , Youichi Arai
发明人： Tsutomu Saigo , Kenichi Shimoyama , Youichi Arai
CPC分类号： G01R31/3651 , G01C22/02 , G01R31/007 , G01R31/361 , G01R31/3648
摘要： A computer is responsible for information on a running speed of an electric automobile, information on a terminal voltage and a discharge current of a battery, stored data on a total capacity of the battery, and reference data for defining a minimum capacity of the battery, to generate and process data on a travel distance of the automobile during a past time interval, data on a consumed capacity of the battery during the past time interval, data on a capacity reduction rate of the battery per unit travel distance, and data on a residual capacity of the battery at a current time, and provide information on a potential travel distance of the automobile, which is displayed.
摘要翻译： 计算机负责关于电动汽车的运行速度，电池的端子电压和放电电流的信息，关于电池的总容量的存储数据以及用于定义电池的最小容量的参考数据的信息， 在过去的时间间隔内生成和处理汽车行驶距离上的数据，关于过去时间间隔期间的电池的消耗容量的数据，关于每单位行驶距离的电池的容量降低率的数据，以及关于 电池在当前时间的剩余容量，并且提供关于显示的汽车的潜在行驶距离的信息。
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公开(公告)号：US5703486A
公开(公告)日：1997-12-30
申请号：US517272
申请日：1995-08-21
申请人： Youichi Arai , Brendan O'Toole , Tsutomu Saigo , Kenichi Shimoyama , Ryo Kumagai , Yoshihide Takada
发明人： Youichi Arai , Brendan O'Toole , Tsutomu Saigo , Kenichi Shimoyama , Ryo Kumagai , Yoshihide Takada
CPC分类号： G01R31/361 , G01R31/3651 , Y10S320/21
摘要： A voltage sensor detects a terminal voltage of a battery connected to a load and a current sensor detects a current flowing through the load. A voltage-current changing tendency calculation unit reads a detected voltage and a detected current detected by the voltage sensor and the current sensor and outputs, every predetermined period of time, plural data of the detected voltage and the corresponding detected current as dispersed data. A voltage-current approximating line calculation unit inputs the dispersed data and determines, based on the dispersed data, a voltage-current approximating linear function each time the predetermined period of time. A battery remaining capacity calculation unit determines, each time the voltage-current approximating linear function is determined, a remaining capacity of the battery based on the voltage-current approximating linear function. Particularly the voltage-current approximating line calculation unit determines the voltage-current approximating linear function by applying a method of least squares to the plural data of the voltage and the corresponding current of the dispersed data.
摘要翻译： 电压传感器检测连接到负载的电池的端子电压，并且电流传感器检测流过负载的电流。 电压电流变化趋势计算单元读取由电压传感器和电流传感器检测到的检测电压和检测电流，并且每隔预定时间周期将检测电压的多个数据和相应的检测电流作为分散数据输出。 电压 - 电流近似线计算单元输入分散的数据，并且每当预定的时间段基于分散的数据确定电压 - 电流近似线性函数。 电池剩余容量计算单元在每次确定电压 - 电流近似线性函数时确定基于电压 - 电流近似线性函数的电池的剩余容量。 特别地，电压 - 电流近似线计算单元通过对分散数据的电压和相应电流的多个数据应用最小二乘法来确定电压 - 电流近似线性函数。
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10.发明授权
公开(公告)号：US5744963A
公开(公告)日：1998-04-28
申请号：US609128
申请日：1996-02-29
IPC分类号： B60L11/18 , G01R31/36 , H01M10/48 , G01N27/416
CPC分类号： G01R31/3624 , B60L11/1851 , G01R31/36 , G01R31/3651 , Y02T10/7005 , Y02T10/705
摘要： While a power source is being supplied from a sub-battery by a voltage-current change trend calculating section, the voltage-current change trend calculating section collects currents from a battery and terminal voltages. A voltage-current approximate straight line calculating section obtains an approximately linear function, and a battery residual capacity calculating section obtains a residual capacity voltage based upon the approximately linear function and open-circuit voltages. A current storage stop discriminating section integrates the currents while the residual capacity voltage is lower than a previous residual capacity voltage, and when supplying from the sub-battery is stopped, obtains total capacity according to the open-circuit voltages at the stop and supplying and according to the integrated currents.
摘要翻译： 在通过电压 - 电流变化趋势计算部从子电池供给电源的同时，电压 - 电流变化趋势计算部分从电池和端子电压中收集电流。 电压 - 电流近似直线计算部分获得近似线性函数，并且电池剩余容量计算部分基于近似线性函数和开路电压获得剩余容量电压。 电流存储停止识别部分在剩余电容电压低于先前的剩余容量电压的同时对电流进行积分，并且当停止从副电池的供给时，根据停止和供给时的开路电压获得总容量， 根据集成电流。
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