公开(公告)号：US20240359591A1

公开(公告)日：2024-10-31

申请号：US18307669

申请日：2023-04-26

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Azeem Sarwar ,  Chaitanya Sankavaram ,  Muhammad Aneeq Uz Zaman

IPC分类号： B60L58/16 ,  B60L58/21 ,  G01R31/367 ,  G01R31/378 ,  G01R31/3835 ,  G01R31/396

CPC分类号： B60L58/16 ,  B60L58/21 ,  G01R31/367 ,  G01R31/378 ,  G01R31/3835 ,  G01R31/396

摘要： Embodiments include methods and systems for identifying a root cause of battery cell degradation in a battery pack. Aspects include collecting voltage data for a plurality of battery cells in the battery pack and identifying a first cell of the plurality of battery cells as a defective battery cell. Aspects also include identifying a second cell of the plurality of battery cells as a nominal battery cell and calculating a self-discharge of the defective battery cell based on the voltage data of the defective battery cell and the nominal battery cell. Aspects further include calculating a capacity fade of the defective battery cell based on the voltage data of the defective battery cell and the nominal battery cell and determining the root cause of a defect of the defective battery cell based on the self-discharge and the capacity fade of the defective cell.

公开(公告)号：US20240201271A1

公开(公告)日：2024-06-20

申请号：US18591461

申请日：2024-02-29

申请人： Largo Clean Energy Corp.

发明人： Eric Alexandrescu ,  Michael L. Perry ,  Michael T. Falcinelli

IPC分类号： G01R31/387 ,  G01R31/36 ,  G01R31/367 ,  G01R31/378

CPC分类号： G01R31/387 ,  G01R31/3644 ,  G01R31/367 ,  G01R31/378

摘要： A system and method for measuring the state of charge (SOC), molarity and concentrations of active species and oxidation state of a flow battery, such as a Vanadium Redox Flow Battery (VRFB). A reference electrolyte is circulated through a reference cell in conjunction with one or both charged electrolytes (in respective conduits). The electric potential of charged electrolyte relative to a reference electrolyte is measured. This measurement is directly convertible to SOC. An equation allowing for the calculation of the molarity, concentration of vanadium ions on both anolyte and catholyte sides of the flow battery and oxidation state is also taught. A flow battery may be controlled in response to such a determination, for example to manage oxidation state, or to charge or discharge a battery.

公开(公告)号：US11977121B2

公开(公告)日：2024-05-07

申请号：US17474703

申请日：2021-09-14

申请人： Analog Devices International Unlimited Company

发明人： Shane O'Mahony ,  Narsimh Dilip Kamath ,  Tze Lei Poo ,  Gina G. Aquilano ,  Hemtej Gullapalli ,  Lance Robert Doherty

IPC分类号： G01R31/378 ,  G01R31/367 ,  G01R31/389

CPC分类号： G01R31/378 ,  G01R31/367 ,  G01R31/389

摘要： Described herein is a device for autonomously monitoring a battery is provided. The device is integrated with the battery (e.g., by being electrically coupled to the battery). The device obtains measurement data by injecting electrical signals into the battery and measuring an electrical response of the battery. The device participates in an authentication protocol with a computing device to verify a unique identity of the device to the computing device. After performing the authentication protocol verifying the unique identity of the device, the device transmits battery data to the computer. Further, techniques for verifying the identity of the battery using measurement data obtained by the device are described herein. The techniques generate a battery signature using the measurement data that is then used to verify the identity of the battery. For example, the battery signature may be used to determine whether the battery is counterfeit or defective.

公开(公告)号：US20240125857A1

公开(公告)日：2024-04-18

申请号：US18474308

申请日：2023-09-26

申请人： Shanghai Makesens Energy Storage Technology Co., Ltd. ,  Shanghai Volta Institute of Digital Battery Energy Storage

发明人： Zonglin CAI ,  Peng DING ,  Guopeng ZHOU ,  Enhai ZHAO ,  Xiao YAN

IPC分类号： G01R31/367 ,  G01R31/378 ,  G01R31/382

CPC分类号： G01R31/367 ,  G01R31/378 ,  G01R31/382

摘要： A method for calculating a state of charge of a battery is provided. The method includes: estimating a first state of charge of the battery by using a first state of charge estimation algorithm; estimating a second state of charge of the battery by using a second state of charge estimation algorithm; determining a first weight corresponding to the first state of charge and a second weight corresponding to the second state of charge based on state data of the battery; and calculating the state of charge of the battery based on the first state of charge and the first weight, and the second state of charge and the second weight. With method for calculating a state of charge of a battery in the present disclosure, the accuracy of calculating the state of charge of the battery can be improve d with a lower computation cost.

公开(公告)号：US20230393208A1

公开(公告)日：2023-12-07

申请号：US18315522

申请日：2023-05-11

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Keiji KISHIDA ,  Koichiro YAMASHITA

IPC分类号： G01R31/378 ,  G01R31/382

CPC分类号： G01R31/378 ,  G01R31/382

摘要： A system includes a first storage unit configured to store a result of an endurance test actually carried out over a first period under a first use condition as training data, and a first arithmetic unit having a machine learning model configured to perform machine learning using the training data stored in the first storage unit. The machine learning model is configured to estimate a result when the endurance test is carried out under a second use condition. The first use condition is a use condition in which a predetermined operation parameter that influences degradation of the fuel cell system appears with equal frequency over an entire domain of the operation parameter. The second use condition is a use condition in which the operation parameter appears with unequal frequency in at least part of the domain of the operation parameter.

公开(公告)号：US20230324469A1

公开(公告)日：2023-10-12

申请号：US18028134

申请日：2022-03-29

申请人： LG ENERGY SOLUTION, LTD. ,  GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY

发明人： Dongin CHOI ,  Hyeong Jin KIM ,  Wonhee KIM ,  Seok Koo KIM

IPC分类号： G01R31/392 ,  G01R31/389 ,  G01R31/36 ,  G01R31/367 ,  G01R31/378 ,  H01M10/42

CPC分类号： G01R31/392 ,  G01R31/389 ,  G01R31/3648 ,  G01R31/367 ,  G01R31/378 ,  H01M10/4285 ,  H01M10/0525

摘要： The present disclosure relates to a method for predicting lifespan characteristics of a lithium secondary battery that can reliably predict the lifespan characteristics of a lithium secondary battery, specifically, the mode of variation in cycle capacity in advance.

公开(公告)号：US20230266392A1

公开(公告)日：2023-08-24

申请号：US17793417

申请日：2020-06-29

申请人： ZHEJIANG UNIVERSITY

发明人： Jian CHEN ,  Hao CHEN ,  Xiaodong FAN ,  Mi ZHOU ,  Yuan FU

IPC分类号： G01R31/367 ,  G01R31/378 ,  H02J7/00

CPC分类号： G01R31/367 ,  G01R31/378 ,  H02J7/00712 ,  H02J7/0048

摘要： Disclosed in the present invention is a multi-target simultaneous charging method for a lithium battery pack: converting energy loss and charging current into a lithium battery pack charging cost model with a charging weight coefficient, and using an interior point method for solving and processing to acquire a preset charging current sequence; on the basis of the preset charging current sequence, calculating the charging time required when charging the lithium battery pack, and adjusting the charging weight coefficient in the lithium battery pack charging cost model by means of an adaptive momentum gradient descent algorithm to obtain the charging weight coefficient with the shortest charging time; using the charging weight coefficient to optimize the lithium battery pack charging cost model to acquire a new preset charging current sequence; and using the new preset charging current sequence to implement charging, thereby implementing optimized multi-target simultaneous charging of the lithium battery pack.

公开(公告)号：US20230258732A1

公开(公告)日：2023-08-17

申请号：US18095287

申请日：2023-01-10

申请人： Medtronic, Inc.

发明人： Martin D. Donakowski ,  Kaimin Chen

IPC分类号： G01R31/392 ,  G01R31/378 ,  G01R31/387 ,  G01R31/36 ,  G01R31/389

CPC分类号： G01R31/392 ,  G01R31/378 ,  G01R31/387 ,  G01R31/3647 ,  G01R31/389

摘要： A method for determining a depth of discharge of an electrochemical cell includes (i)) providing one or more alkaline electrochemical cells comprising Ag2O—Zn; (ii) applying a varying voltage potential to the one or more alkaline electrochemical cells, (iii) measuring an output current response of the one or more alkaline electrochemical cells, the output current response comprising a phase response as a function of frequency; and (iv) determining a depth of discharge of the one or more alkaline electrochemical cells based on a linear relationship of the depth of discharge with the phase response.

公开(公告)号：US20230204668A1

公开(公告)日：2023-06-29

申请号：US17916048

申请日：2021-09-01

申请人： BEIJING INSTITUTE OF TECHNOLOGY

发明人： Rui XIONG ,  Jinpeng TIAN ,  Yanzhou DUAN

IPC分类号： G01R31/367 ,  G01R31/378

CPC分类号： G01R31/367 ,  G01R31/378

摘要： A method for estimating the state of charge (SOC) of a lithium-ion battery system based on artificial intelligence (AI) is provided. In the method, the relationship between the charging data segments and the SOC of the battery system is established through deep learning, and the SOC at any stage of the charging process can be corrected. SOC in a discharging process is estimated through ampere-hour integration. The estimation method is adaptively updated with a change in the working state of the battery system.

公开(公告)号：US20120310565A1

公开(公告)日：2012-12-06

申请号：US13481539

申请日：2012-05-25

申请人： Laszlo Redey

发明人： Laszlo Redey

IPC分类号： G01N27/416 ,  G06F19/00

CPC分类号： G01R31/386 ,  G01R31/367 ,  G01R31/378 ,  G01R31/392

摘要： A self-energized measuring system for determining primary and secondary battery/cell's performance, age, and health by measuring and recording battery/cell's voltage response to a specified load-changing perturbation spot-test event. The cell's voltage response is compared to a synchronously measured voltage signal of a comparator resistor. The relationship between the two voltage signals is analyzed on logarithmic time scale to determine performance parameters such as cell impedance and power and their variation in the time domain. The cell temperature is also measured for impedance and power normalization for 20 centigrade. Results are compared to a previously generated master data tabulation characteristic of a similar, new cell of perfect health condition. The time-domain performance parameters are related to the performance, age and health of the cell at any particular instant. The evaluation method can be easily adjusted to various battery chemistries, types.

摘要翻译： 一个自给自足的测量系统，用于通过测量和记录电池/电池对指定的负载变化扰动点测试事件的电压响应来确定一次和二次电池/电池的性能，年龄和健康状况。 电池的电压响应与比较电阻的同步测量电压信号进行比较。 以对数时间尺度分析两个电压信号之间的关系，以确定诸如单元阻抗和功率以及它们在时域中的变化的性能参数。 测量电池温度也可测量20摄氏度的阻抗和功率归一化。 将结果与以前生成的完全健康状况的类似的新细胞的主数据列表特征进行比较。 时域性能参数与任何特定时刻的单元的性能，年龄和健康有关。 评估方法可以轻松调整到各种电池化学品，类型。