公开(公告)号：WO2020033343A1

公开(公告)日：2020-02-13

申请号：PCT/US2019/045205

申请日：2019-08-06

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： STEFANOPOULOU, Anna, G. ,  LEE, Suhak ,  SIEGEL, Jason, B. ,  LEE, Jang-Woo ,  LEE, Tae-Kyung

IPC: G01R31/36 ,  G01R31/378 ,  G01R31/382 ,  G01R31/3842 ,  G01R31/385 ,  G01R31/387 ,  G01R31/392 ,  G01R31/396

Abstract: The present disclosure provides an electrical device including a battery cell, a voltage sensor operatively coupled to the battery cell in order to measure a voltage level of the battery cell, a current sensor operatively coupled to the battery cell in order to measure an amount of current drawn from or supplied to the battery cell, and a battery management system (BMS). The battery management system includes a controller In communication with the voltage sensor and the current sensor. The controller is configured to execute a program stored in the BMS to calculate a state of health of the individual battery electrodes comprising a battery cell using a first differential voltage point, a second differential voltage point, and a characteristic curve of a fresh battery electrode of a fresh battery cell, wherein the battery cell includes a second battery electrode not exhibiting distinct phase transitions during a charge-discharge cycle.

公开(公告)号：WO2017087807A1

公开(公告)日：2017-05-26

申请号：PCT/US2016/062782

申请日：2016-11-18

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： STEFANOPOULOU, Anna, G. ,  ABDUL SAMAD, Nassim ,  KIM, Youngki ,  SIEGEL, Jason, B.

IPC: B60L3/04 ,  B60R16/033 ,  B60R16/04 ,  H01M10/44

CPC classification number: B60L11/1879 ,  B60L3/12 ,  B60L11/1857 ,  B60L11/1861 ,  B60L2250/10 ,  H01M2/1077 ,  H01M10/052 ,  H01M10/0568 ,  H01M10/425 ,  H01M10/48 ,  H01M2220/20 ,  H02J7/00 ,  H02J2007/005 ,  Y02E60/122 ,  Y02T10/7011 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T90/16

Abstract: There is disclosed an electrical device including a battery, and a battery management system. The battery management system includes a controller in electrical communication with a pressure sensor to monitor the state of health of the battery. The controller applies a method for determining the state of health that uses a non-electrical (mechanical) signal of force measurements combined with incremental capacity analysis to estimate the capacity fading and other health indicators of the battery with better precision than existing methods. The pressure sensor may provide the force measurement signal to the controller, which may determine which incremental capacity curve based on force to use for the particular battery. The controller then executes a program utilizing the data from the pressure sensor and the stored incremental capacity curves based on force to estimate the capacity fading and signal a user with the state of health percentage.

Abstract translation: 公开了包括电池和电池管理系统的电气设备。 电池管理系统包括与压力传感器电通信的控制器，以监测电池的健康状态。 控制器应用一种确定健康状态的方法，该方法使用测力的非电（机械）信号与增量容量分析相结合来以比现有方法更高的精度估计电池的容量衰减和其他健康指标。 压力传感器可以向控制器提供力测量信号，控制器可以基于用于特定电池的力来确定哪个增量容量曲线。 控制器然后利用来自压力传感器的数据和基于力的存储增量容量曲线执行程序以估计容量衰减并向用户发送健康状态百分比状态的信号。

公开(公告)号：WO2016033479A9

公开(公告)日：2016-03-03

申请号：PCT/US2015/047458

申请日：2015-08-28

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： STEFANOPOULOU, Anna, G. ,  MOHAN, Shankar, Narayan ,  KIM, Youngki ,  SIEGEL, Jason, B.

IPC: G01R31/36 ,  H01M10/48

Abstract: There is disclosed an electrical device including a battery pack, a pressure sensor for measuring a volume change of the battery pack, a voltage sensor in electrical communication with a positive terminal and a negative terminal of the battery pack, a temperature sensor positioned in a cell of the battery pack, and a battery management system. The battery management system includes a controller in electrical communication with the pressure sensor, the voltage sensor, and the temperature sensor, the controller being configured to execute a program stored in the controller to determine a state of charge percentage of the battery pack based on a pressure reading from the pressure sensor, a terminal voltage reading from the voltage sensor, and a temperature reading from the temperature sensor.

Abstract translation: 公开了一种电气装置，其包括电池组，用于测量电池组的体积变化的压力传感器，与电池组的正极端子和负极端子电连通的电压传感器 位于电池组的电池中的温度传感器，以及电池管理系统。 电池管理系统包括与压力传感器，电压传感器和温度传感器电通信的控制器，控制器被配置为执行存储在控制器中的程序，以基于电池组的电量 来自压力传感器的压力读数，来自电压传感器的端子电压读数和来自温度传感器的温度读数。