公开(公告)号：US20190064276A1

公开(公告)日：2019-02-28

申请号：US16074463

申请日：2017-01-20

申请人： DENSO CORPORATION

发明人： Toshiyuki KAWAI ,  Keiichi KATO ,  Yuji KOIKE ,  Hideaki TANAKA ,  Shuntaro KONO

IPC分类号： G01R31/36 ,  G06F17/50

摘要： A battery model includes a series connection of a direct current resistance model, a charge transfer resistance model derived from the Butler-Volmer equation, and a diffusion resistance model. A battery state estimating device includes a storage unit and a parameter calculating unit. The storage unit stores information on the resistance parameter related to the resistance component of the diffusion resistance model, the time constant parameter related to the time constant of the diffusion resistance model, and the charge parameter of the charge transfer resistance model, in association with temperature information of the secondary battery. The parameter calculating unit calculates each of the parameters corresponding to the detected temperature value based on a detected temperature value of the secondary battery and the information stored in the storage unit. The parameter calculating unit sequentially identifies parameters used for estimating the state using the Kalman filter and the calculated parameters as initial values.

公开(公告)号：US20180118629A1

公开(公告)日：2018-05-03

申请号：US15568156

申请日：2016-04-08

申请人： DENSO CORPORATION

发明人： Mitsunori OOTA ,  Emi HATTORI ,  Keiichi KATO

IPC分类号： C04B35/622 ,  C04B41/00 ,  C04B41/87 ,  B01J35/04 ,  F01N3/28

CPC分类号： C04B35/62222 ,  B01J23/002 ,  B01J23/20 ,  B01J23/6484 ,  B01J35/04 ,  B01J37/0215 ,  B01J2523/00 ,  C04B41/009 ,  C04B41/5041 ,  C04B41/87 ,  C04B2111/82 ,  F01N3/035 ,  F01N3/28 ,  F01N3/2825 ,  F01N2510/02 ,  C04B35/00 ,  C04B35/195 ,  C04B41/4501 ,  C04B41/4572 ,  C04B41/5031 ,  C04B41/5042 ,  C04B41/5051 ,  B01J2523/47 ,  B01J2523/48 ,  B01J2523/56

摘要： An outer peripheral coating member contains first particles containing titanium oxide, second particles containing zirconium oxide, third particles containing niobium oxide or aluminum oxide, and a dispersion medium. It is preferable for the first particles to have at least two peak values R1 in a distribution of particle sizes of the first particles. One of the peak values R1 is within a range of 1 to 50 nm, and the other peak value R1 is within a range of 100 to 500 nm.

公开(公告)号：US20180045788A1

公开(公告)日：2018-02-15

申请号：US15556138

申请日：2016-03-07

申请人： DENSO CORPORATION

发明人： Toshiyuki KAWAI ,  Keiichi KATO ,  Yuuji KOIKE

IPC分类号： G01R31/36 ,  H01M10/42

CPC分类号： G01R31/367 ,  G01R31/389 ,  H01M10/4285 ,  H01M10/482 ,  H01M2220/20

摘要： A battery state estimating apparatus includes an updating unit. The updating unit updates a charge-transfer impedance model in a battery model of a secondary battery, which is a series connection of a DC resistance model, a charge-transfer impedance model, and an diffusion impedance model, using the amount of change in a measurement value of a current flowing through the secondary such that a first relationship between the current flowing through the secondary battery and a voltage across the charge-transfer resistance approaches a second relationship between an actual value of the current and an actual value of the voltage across the charge-transfer resistance. The first relationship between the current flowing through the secondary battery and the voltage across the charge-transfer resistance is defined based on the Butler-Volmer equation. A state estimator estimates a state of the secondary battery based on the battery model including the updated charge-transfer impedance model.

公开(公告)号：US20160264016A1

公开(公告)日：2016-09-15

申请号：US15058446

申请日：2016-03-02

申请人： DENSO CORPORATION

发明人： Yuuji KOIKE ,  Keiichi KATO ,  Toshiyuki KAWAI

IPC分类号： B60L11/18 ,  H02J7/00

CPC分类号： B60L11/1861 ,  B60L2260/44 ,  G01R31/3624 ,  G01R31/3651 ,  G01R31/3662 ,  H02J7/0021 ,  H02J7/007 ,  H02J7/1461 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/7055

摘要： A secondary battery control unit has a calculating portion identifying a parameter of an equivalent circuit based on an estimation error that is obtained by a comparison between an actual output value of a secondary battery and an equivalent output value of the equivalent circuit. Based on a predetermined amount of an infinitesimal change in the parameter and an evaluation function that is obtained using a result of the comparison, the calculating portion numerically calculates a slope of the evaluation function and renews the parameter based on the slope. As a result, the secondary battery control unit has the calculating portion capable of identifying the parameter of the equivalent circuit while reflecting effects of deterioration of the secondary battery and capable of being integrated to a vehicle-mounted microcomputer.

摘要翻译： 二次电池控制单元具有基于通过二次电池的实际输出值与等效电路的等效输出值之间的比较获得的估计误差来识别等效电路的参数的计算部分。 基于参数的预定量的无穷小变化和使用比较结果获得的评价函数，计算部分数值地计算评价函数的斜率，并根据斜率更新参数。 结果，二次电池控制单元具有能够识别等效电路的参数的计算部，同时反映二次电池的劣化的影响并且能够集成到车载微型计算机。

公开(公告)号：US20160187429A1

公开(公告)日：2016-06-30

申请号：US14979848

申请日：2015-12-28

申请人： DENSO CORPORATION

发明人： Toshiyuki KAWAI ,  Yuuji KOIKE ,  Keiichi KATO

IPC分类号： G01R31/36

CPC分类号： G01R31/3651 ,  G01R31/3658 ,  G01R31/3662

摘要： In an apparatus, a circuit model includes a DC resistance model, and a reaction impedance model having a nonlinear relationship between a first potential difference across a reaction resistance and a current flowing through the secondary battery. The nonlinearly relationship depends on a temperature of the secondary battery. The circuit model includes a diffusion impedance model. The apparatus predicts a future remaining voltage across the secondary battery at a future timing when a predetermined duration will have elapsed since a prediction time. The apparatus calculates a future polarization voltage across the secondary battery at the future timing. The apparatus predicts a target power parameter of the secondary battery at the future timing according to the future remaining voltage, the future polarization voltage, a first potential difference across the reaction resistance, and a second potential difference across the DC resistance model.

摘要翻译： 在一种装置中，电路模型包括直流电阻模型和反应电阻之间的第一电位差与流过二次电池的电流之间具有非线性关系的反应阻抗模型。 非线性关系取决于二次电池的温度。 电路模型包括扩散阻抗模型。 该装置在从预测时间开始经过预定持续时间的未来时刻预测二次电池的未来剩余电压。 该装置在将来的定时计算二次电池两端的未来极化电压。 该装置根据未来的剩余电压，未来的极化电压，跨反应电阻的第一电位差以及直流电阻模型的第二电位差来预测未来定时的二次电池的目标功率参数。

公开(公告)号：US20160103184A1

公开(公告)日：2016-04-14

申请号：US14879761

申请日：2015-10-09

申请人： DENSO CORPORATION

发明人： Toshiyuki KAWAI ,  Keiichi KATO ,  Yuuji KOIKE

IPC分类号： G01R31/36

CPC分类号： G01R31/367 ,  G01R31/374 ,  G01R31/389 ,  G01R31/396

摘要： A battery state estimation apparatus estimates a state of a secondary battery based on a battery model thereof. The battery model includes a DC resistance model, a reaction resistance model, and a diffusion resistance model. The apparatus includes a DC information storage section which stores information on the DC resistance related to temperature of the secondary battery, a reaction information storage section which stores information on the reaction resistance parameter related to the temperature, a diffusion information storage section which stores information on each of the first and second parameters related to the temperature, and a state estimation section which calculates the DC resistance, the reaction resistance parameter, and the first and second parameters from the stored information, by using the temperature as input, and estimates the state of the secondary battery based on the DC resistance, reaction resistance parameter, and first and second parameters.

摘要翻译： 电池状态估计装置基于其电池模型来估计二次电池的状态。 电池模型包括直流电阻模型，反应电阻模型和扩散电阻模型。 该装置包括：DC信息存储部，其存储与二次电池的温度有关的直流电阻的信息;反应信息存储部，其存储与温度有关的反应电阻参数的信息;扩散信息存储部，其存储关于 与温度相关的第一和第二参数中的每一个，以及状态估计部，其通过使用温度作为输入来计算来自所存储的信息的直流电阻，反作用电阻参数以及第一和第二参数，并且估计状态 的二次电池基于直流电阻，反应电阻参数以及第一和第二参数。