公开(公告)号：US20150147614A1

公开(公告)日：2015-05-28

申请号：US14551003

申请日：2014-11-22

Applicant: HRL Laboratories, LLC

Inventor： Shuoqin WANG ,  John WANG ,  Jason A. GRAETZ ,  Souren SOUKIAZIAN ,  Elena SHERMAN ,  Ping LIU ,  Mark VERBRUGGE

IPC: H01M10/42 ,  G01R31/36 ,  H01M10/48

CPC classification number: H01M10/4285 ,  G01N27/4161 ,  G01R31/3606 ,  G01R31/362 ,  G01R31/3624 ,  G01R31/3679 ,  H01M10/052 ,  H01M10/4221 ,  H01M10/48

Abstract: In some variations, an apparatus provides real-time monitoring of voltage and differential voltage of both anode and cathode in a battery configured with at least one reference electrode. Voltage monitors are connected to a computer programmed for receiving anode voltage signals; receiving cathode voltage signals; calculating the derivative of the anode voltage with respect to time or with respect to capacity; and calculating the derivative of the cathode voltage with respect to time or with respect to capacity. Other variations provide an apparatus for real-time assessment of capacities of both anode and cathode in a battery, comprising a computer programmed for receiving electrode voltage signals; estimating first and second electrode open-circuit voltages at two different times, and correlating the first and second electrode open-circuit voltages to first and second electrode states of charge, respectively, for each of anode and cathode. The anode and cathode capacities may then be estimated independently.

Abstract translation: 在一些变型中，装置提供对配置有至少一个参考电极的电池中的阳极和阴极的电压和差分电压的实时监测。 电压监视器连接到被编程用于接收阳极电压信号的计算机; 接收阴极电压信号; 计算相对于时间或相对于容量的阳极电压的导数; 以及相对于时间或相对于容量计算阴极电压的导数。 其他变型提供一种用于实时评估电池中阳极和阴极的容量的装置，包括被编程用于接收电极电压信号的计算机; 估计两个不同时间的第一和第二电极开路电压，并且分别将第一和第二电极开路电压分别与阳极和阴极中的每一个的电荷的第一和第二电极状态相关联。 然后可以独立地估计阳极和阴极容量。

公开(公告)号：US20140372055A1

公开(公告)日：2014-12-18

申请号：US14303132

申请日：2014-06-12

Applicant: HRL Laboratories, LLC

Inventor： John WANG ,  Shuoqin WANG ,  Souren SOUKIAZIAN ,  Jason A. GRAETZ

IPC: G01K13/00 ,  G01R31/36

CPC classification number: G01K13/00 ,  G01K7/427 ,  G01R31/3606 ,  G01R31/3624 ,  G01R31/3651 ,  G01R31/3662 ,  G01R31/3675

Abstract: The internal temperature of an electrochemical device may be probed without a thermocouple, infrared detector, or other auxiliary device to measure temperature. Some methods include exciting an electrochemical device with a driving profile; acquiring voltage and current data from the electrochemical device, in response to the driving profile; calculating an impulse response from the current and voltage data; calculating an impedance spectrum of the electrochemical device from the impulse response; calculating a state-of-charge of the electrochemical device; and then estimating internal temperature of the electrochemical device based on a temperature-impedance-state-of-charge relationship. The electrochemical device may be a battery, fuel cell, electrolytic cell, or capacitor, for example. The procedure is useful for on-line applications which benefit from real-time temperature sensing capabilities during operations. These methods may be readily implemented as part of a device management and safety system.

Abstract translation: 可以探测电化学装置的内部温度而不用热电偶，红外检测器或其他辅助装置来测量温度。 一些方法包括激发具有驱动轮廓的电化学装置; 响应于驱动轮廓从电化学装置获取电压和电流数据; 从电流和电压数据计算脉冲响应; 从脉冲响应计算电化学装置的阻抗谱; 计算电化学装置的充电状态; 然后基于温度 - 阻抗 - 电荷状态关系来估计电化学装置的内部温度。 电化学装置可以是例如电池，燃料电池，电解池或电容器。 该程序对于在运行期间受益于实时温度感测能力的在线应用是有用的。 这些方法可以容易地实现为设备管理和安全系统的一部分。

公开(公告)号：US20140372054A1

公开(公告)日：2014-12-18

申请号：US14301334

申请日：2014-06-11

Applicant: HRL Laboratories, LLC

Inventor： Shuoqin WANG ,  Luan D. VU

IPC: G01R31/36

CPC classification number: G01R31/3624 ,  G01R31/3651 ,  G01R31/3662 ,  G01R31/3679

Abstract: A method for dynamic characterization of an electrochemical system (such as a lithium-ion battery) is provided, comprising exciting an electrochemical system with a plurality of double-pulse sequences, each comprising a constant-current discharge pulse, a constant-current charge pulse having the same pulse width and pulse amplitude, and a zero-current period between the pulses; and calculating an impulse response, using a recursive or matrix-based method, to dynamically characterize the electrochemical system. A constant state-of-charge is maintained in the electrochemical system. Therefore the signal-to-noise ratio is high due to the repetition of the driving sequence. This method may be employed for on-line determination of the impedance spectrum of an electrochemical system, since the cycling profile can be easily integrated into charge/discharge profiles. Batteries (and other devices) can be diagnosed at high speed and with high accuracy. The double-pulse sequence is robust for fairly noisy systems.

Abstract translation: 提供了一种用于电化学系统（例如锂离子电池）的动态表征的方法，其包括激励具有多个双脉冲序列的电化学系统，每个包括恒流放电脉冲，恒流充电脉冲 具有相同的脉冲宽度和脉冲幅度，以及脉冲之间的零电流周期; 并且使用递归或基于矩阵的方法来计算脉冲响应来动态地表征电化学系统。 在电化学系统中保持恒定的充电状态。 因此，由于重复驱动顺序，信噪比较高。 该方法可以用于在线确定电化学系统的阻抗谱，因为循环曲线可以容易地集成到充电/放电曲线中。 电池（和其他设备）可以高速，高精度诊断。 对于相当嘈杂的系统，双脉冲序列是稳健的。