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11. 发明授权

US08615372B2 State estimating device for secondary battery 有权
标题翻译：二次电池状态估计装置
公开(公告)号：US08615372B2
公开(公告)日：2013-12-24
申请号：US13061008
申请日：2009-08-28
申请人： Shuji Tomura , Takaji Umeno , Yasushi Amano , Yuji Nishi , Takeshi Takemoto , Nobuyasu Haga , Tetsuya Fuchimoto
发明人： Shuji Tomura , Takaji Umeno , Yasushi Amano , Yuji Nishi , Takeshi Takemoto , Nobuyasu Haga , Tetsuya Fuchimoto
IPC分类号： G06F19/00
CPC分类号： G06F19/00 , G01R31/3651 , G01R31/3662 , H01M10/48 , H01M10/486
摘要： A battery state estimating unit estimates an internal state of a secondary battery in accordance with a battery model equation in every arithmetic cycle, and estimates a charging rate and a battery current based on a result of the estimation. A parameter estimating unit obtains a battery current measured by a sensor as well as the charging rate and the battery current estimated by the battery state estimating unit. The parameter estimating unit estimates a capacity deterioration parameter such that a rate of change in difference (estimation error) between a summed value of an actual current and a summed value of an estimated current with respect to the charging rate is minimized. A result obtained by estimating the capacity deterioration parameter is reflected in the battery model by the battery state estimating unit.
摘要翻译：电池状态估计单元根据每个算术循环中的电池模型等式来估计二次电池的内部状态，并且基于估计结果来估计充电率和电池电流。参数估计单元获得由传感器测量的电池电流以及由电池状态估计单元估计的充电率和电池电流。参数估计单元估计容量劣化参数，使得实际电流的求和值与估计电流的相加值相对于充电率之间的差值（估计误差）的变化率最小化。通过估计容量劣化参数获得的结果由电池状态估计单元反映在电池模型中。

12. 发明申请

US20100085057A1 DEVICE ESTIMATING A STATE OF A SECONDARY BATTERY 有权
标题翻译：设备估计二次电池状态
公开(公告)号：US20100085057A1
公开(公告)日：2010-04-08
申请号：US12447715
申请日：2008-03-07
申请人： Yuji Nishi , Takeshi Takemoto , Nobuyasu Haga , Tetsuya Fuchimoto
发明人： Yuji Nishi , Takeshi Takemoto , Nobuyasu Haga , Tetsuya Fuchimoto
IPC分类号： G01N27/27
CPC分类号： G01R31/3651 , G01R31/3624 , H01M10/44 , H01M10/48
摘要： A diffusion estimation unit follows a diffusion equation in an active material that is represented by a polar coordinate to estimate a distribution in concentration of lithium in the active material. An open circuit voltage estimation unit obtains an open circuit voltage in accordance with a local SOC(θ) based on a concentration of lithium obtained at an interface of the active material as estimated by the diffusion estimation unit. A current estimation unit uses a battery's voltage measured by a voltage sensor, the estimated open circuit voltage, and a parameter value that is set for the battery by a battery parameter value setting unit, and follows a voltage-current relationship model expression simplified from an electrochemical reaction expression to estimate the battery's current density. A boundary condition setting unit sequentially sets a boundary condition for the diffusion equation of the diffusion estimation unit for the active material's interface, as based on the battery's estimated current density. Thus a battery model that allows an internal state to be estimated based on an electrochemical reaction dynamically and can also achieve an alleviated operating load can be used to estimate a state of a secondary battery.
摘要翻译：扩散估计单元遵循由极坐标表示的活性材料中的扩散方程，以估计活性材料中锂浓度的分布。开路电压估计单元基于通过扩散估计单元估计的在活性物质的界面处获得的锂的浓度，根据本地SOC（“thetas”）获得开路电压。当前估计单元使用由电压传感器测量的电池电压，估计的开路电压和由电池参数值设置单元为电池设置的参数值，并且遵循简化的电压 - 电流关系模型表达式电化学反应表达式来估计电池的电流密度。边界条件设定部基于电池的推定电流密度，依次设定活性物质界面的扩散估计部的扩散方程的边界条件。因此，可以使用允许基于电化学反应动态地估计内部状态并且还可以实现减轻的操作负载的电池模型来估计二次电池的状态。

13. 发明授权

US08093902B2 Device estimating a state of a secondary battery 有权
标题翻译：设备估计二次电池的状态
公开(公告)号：US08093902B2
公开(公告)日：2012-01-10
申请号：US12447715
申请日：2008-03-07
申请人： Yuji Nishi , Takeshi Takemoto , Nobuyasu Haga , Tetsuya Fuchimoto
发明人： Yuji Nishi , Takeshi Takemoto , Nobuyasu Haga , Tetsuya Fuchimoto
IPC分类号： G01N27/416 , H02J7/00
CPC分类号： G01R31/3651 , G01R31/3624 , H01M10/44 , H01M10/48
摘要： A diffusion estimation unit follows a diffusion equation in an active material that is represented by a polar coordinate to estimate a distribution in concentration of lithium in the active material. An open circuit voltage estimation unit obtains an open circuit voltage in accordance with a local SOC(θ) based on a concentration of lithium obtained at an interface of the active material as estimated by the diffusion estimation unit. A current estimation unit uses a battery's voltage measured by a voltage sensor, the estimated open circuit voltage, and a parameter value that is set for the battery by a battery parameter value setting unit, and follows a voltage-current relationship model expression simplified from an electrochemical reaction expression to estimate the battery's current density. A boundary condition setting unit sequentially sets a boundary condition for the diffusion equation of the diffusion estimation unit for the active material's interface, as based on the battery's estimated current density. Thus a battery model that allows an internal state to be estimated based on an electrochemical reaction dynamically and can also achieve an alleviated operating load can be used to estimate a state of a secondary battery.
摘要翻译：扩散估计单元遵循由极坐标表示的活性材料中的扩散方程，以估计活性材料中锂浓度的分布。开路电压估计单元基于通过扩散估计单元估计的在活性物质的界面处获得的锂的浓度，根据本地SOC（“thetas”）获得开路电压。当前估计单元使用由电压传感器测量的电池电压，估计的开路电压和由电池参数值设置单元为电池设置的参数值，并且遵循简化的电压 - 电流关系模型表达式电化学反应表达式来估计电池的电流密度。边界条件设定部基于电池的推定电流密度，依次设定活性物质界面的扩散估计部的扩散方程的边界条件。因此，可以使用允许基于电化学反应动态地估计内部状态并且还可以实现减轻的操作负载的电池模型来估计二次电池的状态。

14. 发明申请

US20120221267A1 ESTIMATION APPARATUS AND ESTIMATION METHOD 有权
标题翻译：估计装置和估计方法
公开(公告)号：US20120221267A1
公开(公告)日：2012-08-30
申请号：US13508072
申请日：2010-10-05
申请人： Kenji Takahashi , Yuji Nishi , Tetsuya Fuchimoto
发明人： Kenji Takahashi , Yuji Nishi , Tetsuya Fuchimoto
IPC分类号： G01R31/36
CPC分类号： H01M10/42 , G01R31/362 , G01R31/3662 , H01M10/052
摘要： An estimation apparatus has a controller which estimates an internal reaction of a secondary battery. The controller calculates a voltage drop amount due to an internal resistance of the secondary battery by using an expression (I): Δ   V = RT α   β   F  arc   sinh ( - R r  I RT α   β   F ) - R d  I ( I ) where ΔV represents the voltage drop amount, R represents a gas constant, T represents a temperature, α represents an oxidation reduction transfer coefficient (α=0.5) of an electrode, β represents a correction coefficient (0
摘要翻译：估计装置具有估计二次电池的内部反应的控制器。控制器使用表达式（I）计算由于二次电池的内部电阻引起的电压降量：＆Dgr; 冥想V = RTαared＆bgr （D）R D I（I）其中＆Dgr; V表示电压降量，R表示气体常数，T表示气体常数， a表示电极的氧化还原转移系数（α= 0.5），bgr表示。表示校正系数（0 <＆bgr; <1），F表示法拉第常数，I表示放电电流，Rr表示包含在内部电阻中的反应电阻的分量，Rd表示直流电阻的分量纳入内部阻力。

15. 发明授权

US08527225B2 Estimation apparatus and estimation method 有权
标题翻译：估计装置和估计方法
公开(公告)号：US08527225B2
公开(公告)日：2013-09-03
申请号：US13508072
申请日：2010-10-05
申请人： Kenji Takahashi , Yuji Nishi , Tetsuya Fuchimoto
发明人： Kenji Takahashi , Yuji Nishi , Tetsuya Fuchimoto
IPC分类号： G01R31/36
CPC分类号： H01M10/42 , G01R31/362 , G01R31/3662 , H01M10/052
摘要： An estimation apparatus has a controller which estimates an internal reaction of a secondary battery. The controller calculates a voltage drop amount due to an internal resistance of the secondary battery by using an expression (I): Δ ⁢ ⁢ V = RT α ⁢ ⁢ β ⁢ ⁢ F ⁢ arc ⁢ ⁢ sinh ( - R r ⁢ I RT α ⁢ ⁢ β ⁢ ⁢ F ) - R d ⁢ I ( I ) where ΔV represents the voltage drop amount, R represents a gas constant, T represents a temperature, α represents an oxidation reduction transfer coefficient (α=0.5) of an electrode, β represents a correction coefficient (0
摘要翻译：估计装置具有估计二次电池的内部反应的控制器。控制器通过使用以下表达式（I）计算由于二次电池的内部电阻引起的电压降量：Delta·通过V = RTα·∞·········································· （D）（I）其中DeltaV表示电压降量，R表示气体常数，T表示温度，α表示电极的氧化还原转移系数（α= 0.5） β表示校正系数（0 <β<1），F表示法拉第常数，I表示放电电流，Rr表示包含在内部电阻中的反应电阻的分量，Rd表示直流电阻的分量纳入内部阻力。

16. 发明授权

US10725108B2 Battery status estimating device 有权
公开(公告)号：US10725108B2
公开(公告)日：2020-07-28
申请号：US14391772
申请日：2012-12-20
申请人： Kenji Takahashi , Yuji Nishi , Nobuyasu Haga
发明人： Kenji Takahashi , Yuji Nishi , Nobuyasu Haga
IPC分类号： G06F17/40 , G06F19/00 , G01R31/36 , G01R31/367 , G01R31/382 , G01R31/3828 , G01R31/3835 , G01R31/3842 , H01M10/48 , G01K13/00 , H01M10/0525 , H02J7/00
摘要： [Summary][Objective] Estimation accuracy in a battery status estimating device which estimates a charge status of a secondary battery should be improved further more.[Means for Solution] In an SOC estimation by integration of a charge-and-discharge current, influence of a sensor error cannot be disregarded, and the influence of such an error is accumulated as time passes. On the other hand, in an SOC estimation based on measured values of a battery voltage and a battery temperature, estimation accuracy largely depends on a load-generation pattern. Then, in accordance with the present invention, by mixing both, while one of them is reset based on a reliability in accordance with an operation situation and/or an input current value which will be the premise for an SOC estimate calculation in a battery model is set up based on the reliability, it becomes possible to compute an SOC estimate in high accuracy as much as possible in accordance with the operation situation.

17. 发明授权

US08521456B2 State estimation method and state estimation apparatus of electric storage element 有权
标题翻译：蓄电元件的状态估计方法和状态估计装置
公开(公告)号：US08521456B2
公开(公告)日：2013-08-27
申请号：US13500006
申请日：2010-10-05
申请人： Kenji Takahashi , Yuji Nishi , Nobuyasu Haga
发明人： Kenji Takahashi , Yuji Nishi , Nobuyasu Haga
IPC分类号： G01R31/36 , G06F19/00
CPC分类号： H01G11/18 , G01R31/3662 , H01G11/14 , H01M10/425 , H01M10/486 , Y02E60/13
摘要： A method includes the steps of calculating the temperature of a reference point in an electric storage element by using a detected temperature by a temperature sensor attached to an outer face of the electric storage element and a heat conduction equation, and estimating the internal state of the electric storage element by using the calculated temperature of the reference point. The reference point is a lattice point at which a temperature associated with the internal resistance of the electric storage element is shown, out of a plurality of lattice points provided in the electric storage element.
摘要翻译：一种方法包括以下步骤：通过利用安装在蓄电元件的外表面上的温度传感器的检测温度和热传导方程式来计算蓄电元件中的参考点的温度，并且估计内部状态蓄电元件通过使用计算出的参考点的温度。参考点是在电存储元件中设置的多个格点中，示出了与蓄电元件的内部电阻相关联的温度的格点。

18. 发明申请

US20120209551A1 STATE ESTIMATION METHOD AND STATE ESTIMATION APPARATUS OF ELECTRIC STORAGE ELEMENT 有权
标题翻译：电力储存元件的状态估计方法和状态估计装置
公开(公告)号：US20120209551A1
公开(公告)日：2012-08-16
申请号：US13500006
申请日：2010-10-05
申请人： Kenji Takahashi , Yuji Nishi , Nobuyasu Haga
发明人： Kenji Takahashi , Yuji Nishi , Nobuyasu Haga
IPC分类号： G06F19/00 , G01R31/36
CPC分类号： H01G11/18 , G01R31/3662 , H01G11/14 , H01M10/425 , H01M10/486 , Y02E60/13
摘要： A method includes the steps of calculating the temperature of a reference point in an electric storage element by using a detected temperature by a temperature sensor attached to an outer face of the electric storage element and a heat conduction equation, and estimating the internal state of the electric storage element by using the calculated temperature of the reference point. The reference point is a lattice point at which a temperature associated with the internal resistance of the electric storage element is shown, out of a plurality of lattice points provided in the electric storage element.
摘要翻译：一种方法包括以下步骤：通过利用安装在蓄电元件的外表面上的温度传感器的检测温度和热传导方程式来计算蓄电元件中的参考点的温度，并且估计内部状态蓄电元件通过使用计算出的参考点的温度。参考点是在电存储元件中设置的多个格点中，示出了与蓄电元件的内部电阻相关联的温度的格点。

19. 发明申请

US20150212158A1 ELECTRIC STORAGE SYSTEM 有权
标题翻译：电力储存系统
公开(公告)号：US20150212158A1
公开(公告)日：2015-07-30
申请号：US14419390
申请日：2012-08-09
申请人： Kenji Takahashi , Yuji Nishi , Hiroyuki Kaiya
发明人： Kenji Takahashi , Yuji Nishi , Hiroyuki Kaiya
IPC分类号： G01R31/327 , G01R31/36
CPC分类号： G01R31/3274 , B60L11/1864 , B60L2240/545 , B60L2240/547 , B60L2240/549 , B60L2270/20 , G01R31/3644 , H01M10/48 , H02J7/1461 , H02J7/345 , Y02T10/7005 , Y02T10/7061
摘要： The state of a plurality of electric storage blocks connected in serial is determined. Each of the electric storage blocks includes a plurality of electric storage elements connected in parallel. Each of the electric storage elements includes a current breaker configured to break a current path in the electric storage element. When a first voltage characteristic is shifted from a second voltage characteristic, it is determined that the current breaker is operated. The first voltage characteristic is acquired from a voltage sensor acquiring an open circuit voltage of each electric storage block and indicates a change in the open circuit voltage with respect to a capacity of the electric storage block. The second voltage characteristic is calculated from a capacity retention rate and a variation of the capacity and indicates a change in the open circuit voltage with respect to the capacity of the electric storage block.
摘要翻译：确定串联连接的多个蓄电块的状态。每个蓄电块包括并联连接的多个蓄电元件。每个蓄电元件包括配置成断开蓄电元件中的电流通路的电流断路器。当第一电压特性从第二电压特性偏移时，确定电流断路器被操作。从获取每个蓄电块的开路电压的电压传感器获取第一电压特性，并且指示相对于蓄电块的容量的开路电压的变化。第二电压特性根据容量保持率和容量的变化计算，并且指示开路电压相对于蓄电块的容量的变化。

20. 发明申请

US20140335387A1 ELECTRIC STORAGE SYSTEM 有权
标题翻译：电力储存系统
公开(公告)号：US20140335387A1
公开(公告)日：2014-11-13
申请号：US14355724
申请日：2012-02-03
申请人： Kenji Takahashi , Yuji Nishi , Hiroyuki Kaiya , Kenji Kimura
发明人： Kenji Takahashi , Yuji Nishi , Hiroyuki Kaiya , Kenji Kimura
IPC分类号： G01R31/36 , H01M2/34
CPC分类号： G01R31/3634 , H01M2/34 , H01M10/425 , H01M10/482 , H01M2200/00 , H01M2220/20
摘要： An electric storage system includes electric storage blocks and a controller determining the state of each of the electric storage blocks. The plurality of electric storage blocks are connected in series, and each of the electric storage blocks has a plurality of electric storage elements connected in parallel. Each of the electric storage elements has a current breaker breaking a current path within the electric storage element. The controller acquires at least one parameter of an internal resistance and a full charge capacity of each of the electric storage blocks, and uses a change rate between the acquired parameter and a reference value to specify the number of current breakers in a broken state (the number of breaks) in each of the electric storage blocks. The reference value refers to the value of the parameter in the electric storage block not including the current breaker in the broken state.
摘要翻译：电存储系统包括电存储块和确定每个电存储块的状态的控制器。多个蓄电块串联连接，各蓄电块具有并联连接的多个蓄电元件。每个蓄电元件都具有断开蓄电元件内的电流通路的电流断路器。控制器获取每个电存储块的内部电阻和满充电容量的至少一个参数，并且使用所获取的参数和参考值之间的变化率来指定处于断开状态的电流断路器的数量（每个电存储块中的间隔数）。参考值是指不包括处于断开状态的当前断路器的蓄电块中的参数值。

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