Abstract: The early detection of soft internal short-circuit faults in lithium-ion battery packs is critical to ensuring the safe and reliable operation of electric vehicles. This article proposes a fault diagnosis method that can achieve the detection and assessment of soft internal short-circuit faults for lithium-ion battery packs.
However, various faults in a lithium-ion battery system (LIBS) can potentially cause performance degradation and severe safety issues. Developing advanced fault diagnosis technologies is becoming increasingly critical for the safe operation of LIBS. This paper provides a faults, and actuator faults.
the inconsistency among cells, inaccurate condition monitoring, and charging system faults . For example, if the voltages of respectively, resulting in the rapid aging of the battery. FIGURE 4 - Over view of the faults in the Li -ion battery systems. cyclable Li- ions and active material , .
between cells can be taken as effective fault features. Battery fault detection and even short -circuit current estimation can be performed based on the MDM of the battery pack with state estimation and parameter estimation. Ho weve r, these model-based methods are affected by cell inconsiste ncies in the battery pack.
The battery faults, which include overcharge, accelerated degradation, and thermal runaway (TR), are the most critical faults in the LIBS. These f aults are also inte rtwine d. Overcharge an d overdischarge could lead to various undesirable batter y side reacti ons, resultin g in accelerated degradation. These
Xion g et al. proposed a rule-based detection method for the over-discharged L i-ion batteries. Based upon the respectively, and fa ilure detection and earl y warning are directly given by a Boolean e xpression. However, the appropriate fi xed or time -varying thresholds in the rules are not easy to be determined in real applications.
Early Internal Short Circuit Diagnosis for Lithium-Ion Battery Packs ...
Timely identification of early internal short circuit faults, commonly referred to as micro short circuits (MSCs), is essential yet poses significant challenges for the safe and …
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Determination of the battery pack capacity considering the …
This paper provides an original investigation on the determination of the battery pack capacity considering the estimation error using a Capacity–Quantity diagram. Previous …
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Determination of the battery pack capacity considering the estimation ...
Lithium-ion batteries have been widely used as the power source of electric vehicles (EVs) in recent years [1], [2]. Generally, the battery system for EVs is composed of numerous single cells, because the voltage and capacity of a single battery are insufficient [3].
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Fault Identification and Quantitative Diagnosis Method …
The experimental results show that, a coexisting MSC fault and low-capacity fault in the battery packs could be diagnosed effectively by using the proposed method.
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Early Internal Short Circuit Diagnosis for Lithium-Ion Battery Packs ...
Timely identification of early internal short circuit faults, commonly referred to as micro short circuits (MSCs), is essential yet poses significant challenges for the safe and reliable operation of lithium-ion battery (LIB) energy storage systems.
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A novel time series forecasting model for capacity degradation …
Monitoring battery health is critical for electric vehicle maintenance and safety. However, existing research has limited focus on predicting capacity degradation paths for entire battery packs, representing a gap between literature and application. This paper proposes a multi-horizon time series forecasting model (MMRNet, which consists of MOSUM, flash-MUSE …
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Active equalization for lithium-ion battery pack via data-driven ...
In the text of global warming and shortage of fossil fuels, electric vehicles (EVs) have been seen as a promising alternative for conventional vehicles and become extremely popular in the recent years (Chen et al., 2022; Abu et al., 2023; Han et al., 2023) nsidering the limited voltage and capacity of one single lithium-ion battery cell, hundreds to thousands of …
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Capacity evaluation and degradation analysis of lithium-ion battery …
Taking the mileage and service life as variables, two degradation models of battery capacity are established with mean absolute errors equal to 3.138 Ah and 3.137 Ah. According to the degradation model, the battery''s average service life is 71.8 months, and the average service mileage is 121,700 km.
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Capacity estimation of lithium-ion battery through interpretation …
Experimental results confirm that the framework achieves high estimation accuracy, strong generalization, and robust performance, even in scenarios with limited data availability and training noise presence, with a root mean square error not exceeding 0.81 %, a mean absolute error below 0.62 %, and a maximum absolute error of no more than 0.0653...
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Consistency evaluation of Lithium-ion battery packs in electric ...
Download Citation | On Dec 1, 2024, Yanru Zhang and others published Consistency evaluation of Lithium-ion battery packs in electric vehicles based on incremental capacity curves transformation ...
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Fault Identification and Quantitative Diagnosis Method for Series ...
A reasonable threshold considering capacity change characteristics is established to initially identify the fault and for further quantitative diagnosis. The experimental results show that a …
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Short circuit detection in lithium-ion battery packs
Abusive lithium-ion battery operations can induce micro-short circuits, which can develop into severe short circuits and eventually thermal runaway events, a significant safety concern in lithium-ion battery packs. This paper aims to detect and quantify micro-short circuits before they become a safety issue. We develop offline batch least square-based and real-time gradient …
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Consistency evaluation of Lithium-ion battery packs in electric ...
6 · For batteries with a capacity degradation of <10 %, the capacity estimation error and the initial capacity estimation error are both within 2 % when using the 40 %–80 % SOC range data to estimate parameters, but for batteries with a capacity degradation of >10 %, the error increases rapidly. The reason is that after the capacity declines to ...
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Determination of the battery pack capacity considering the estimation ...
This paper provides an original investigation on the determination of the battery pack capacity considering the estimation error using a Capacity–Quantity diagram. Previous works have been proposed to estimate the battery pack capacity, and the SOCs and capacities of individual cells, separately. However, there is still no ...
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Lifetime and Aging Degradation Prognostics for Lithium-ion Battery ...
Aging diagnosis of batteries is essential to ensure that the energy storage systems operate within a safe region. This paper proposes a novel cell to pack health and lifetime prognostics method based on the combination of transferred deep learning and Gaussian process regression. General health indicators are extracted from the partial discharge process. The …
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Detection of Impedance Inhomogeneity in Lithium-Ion Battery Packs …
The inhomogeneity between cells is the main cause of failure and thermal runaway in Lithium-ion battery packs. Electrochemical Impedance Spectroscopy (EIS) is a non-destructive testing technique that can map the complex reaction processes inside the battery. It can detect and characterise battery anomalies and inconsistencies. This study proposes a …
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Capacity estimation of lithium-ion battery through interpretation …
Experimental results confirm that the framework achieves high estimation accuracy, strong generalization, and robust performance, even in scenarios with limited data availability and …
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(PDF) Advanced Fault Diagnosis for Lithium-Ion Battery …
However, various faults in a Li-ion battery system (LIBS) can potentially cause performance degradation and severe safety issues. Developing advanced fault diagnosis technologies is becoming...
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An Early Soft Internal Short-Circuit Fault Diagnosis Method for …
This article proposes a fault diagnosis method that can achieve the detection and assessment of soft internal short-circuit faults for lithium-ion battery packs. Specifically, based on the …
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Cell Inconsistency Classification for Lithium-Ion Battery Packs ...
Cell inconsistencies decrease the energy efficiency, and low-capacity cells in packs can occur an internal short circuit (ISC) fault which causes a thermal runaway in severe cases. However, …
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How to Know Lithium Battery Capacity?
Learn what lithium battery capacity is, why it matters, and how to measure it. Discover the factors affecting capacity and its impact on battery life. Tel: +8618665816616; Whatsapp/Skype: +8618665816616; Email: sales@ufinebattery ; English English Korean . Blog. Blog Topics . 18650 Battery Tips Lithium Polymer Battery Tips LiFePO4 Battery Tips …
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Capacity evaluation and degradation analysis of lithium-ion …
Taking the mileage and service life as variables, two degradation models of battery capacity are established with mean absolute errors equal to 3.138 Ah and 3.137 Ah. …
Learn More
Fault Identification and Quantitative Diagnosis Method for Series ...
The experimental results show that, a coexisting MSC fault and low-capacity fault in the battery packs could be diagnosed effectively by using the proposed method.
Learn More
An Early Soft Internal Short-Circuit Fault Diagnosis Method for Lithium …
This article proposes a fault diagnosis method that can achieve the detection and assessment of soft internal short-circuit faults for lithium-ion battery packs. Specifically, based on the incremental capacity curve, fault features are extracted from the data, making them easier to identify than small voltage differences. Then, the local ...
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Lithium-ion battery health estimation with real-world data for …
THE development and implementation of EVs is a favorable measure to tackle the energy crisis, and lower environmental pollution [1], [2].For an EV, the battery pack is the source of power [3].The lithium-ion battery is currently the most favorable option for making an EV battery pack because of its advantages, including high voltage platform [4], high energy …
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Cell Inconsistency Classification for Lithium-Ion Battery Packs ...
Cell inconsistencies decrease the energy efficiency, and low-capacity cells in packs can occur an internal short circuit (ISC) fault which causes a thermal runaway in severe cases. However, the ISC may be misdiagnosed as cell inconsistencies and vice versa because the impacts of cell inconsistencies and the ISC are similar in particular charge ...
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An online SOC and capacity estimation method for aged lithium …
However, few researches have conducted the estimation of the state and capacity of lithium-ion aged battery packs considering the inconsistency of SOC, cell model parameters and capacity. In order to address these inconsistencies in the aged battery pack, a joint estimation of the SOC, model parameter and capacity of each cell in the battery pack …
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Fault Identification and Quantitative Diagnosis Method for …
A reasonable threshold considering capacity change characteristics is established to initially identify the fault and for further quantitative diagnosis. The experimental results show that a coexisting MSC fault and low-capacity fault in the battery packs could be diagnosed effectively by using the proposed method.
Learn More
