Considering the limitations in existing correlation coefficient-based, entropy-based and big data analysis-based voltage sensor fault diagnosis methods, we …
When the fault current of the current sensor is 0.4A, 0.3A and 0.2A, the fault diagnosis method based on fault current estimation improves the diagnosis efficiency by 58.8%, 49.4%, and 45.7% ...
Internal short circuit (ISCr) is one of the major obstacles to the improvement of the battery safety. The ISCr may lead to the battery thermal runaway and is hard to be detected in the early stage. In this work, a new ISCr detection method based on the symmetrical loop circuit topology (SLCT) is introduced. The SLCT ensures that every …
With the proliferation of Li-ion batteries in smart phones, safety is the main concern and an on-line detection of battery faults is much wanting. Internal short circuit is a very critical issue ...
Effects of Series Connections on Voltage When batteries are connected in series, the voltages of the individual batteries add up, resulting in a higher overall voltage. For example, if two 6-volt batteries are connected in series, the total voltage would be 12 volts.
Anker Portable Charger, Power Bank, 10000 mAh Battery ...
The thermal runaway of an electric vehicle (EV) battery can cause severe loss of property and human life. A cell short circuit can lead to thermal runaway in a minutes. Therefore, battery short circuit detection systems are important for prevention and limitation of EV fire incidents. This paper proposes a short circuit detection and isolation method for lithium …
Due to the non-uniformity of internal resistance, the maximum current of the series battery pack is limited by the worst power density of the single cell, which may cause over-temperature and thermal runaway in the battery pack [10]. (3) The actual power of the battery pack is also affected by self-discharge and coulomb efficiency [11].
With the proliferation of Li-ion batteries in smart phones, safety is the main concern and an on-line detection of battery faults is much wanting. Internal short circuit is a very critical ...
The early detection and tracing of anomalous operations in battery packs are critical to improving performance and ensuring safety. This paper presents a data-driven approach …
The index of cell-to-cell variation. The cell-to-cell performance variation in a battery pack is traditionally indexed by the capacity, mass, direct current resistance, impedance, etc. 11.The most ...
The battery pack of faulty vehicle No.1 with 95 cells connected in series caught fire at 14:27:52, July 5, 2019. The faulty source is No.17 cell with the short-circuit during charging process. Table 1 gives the specification of battery pack. The whole-life-cycle data of this battery pack have 1,420,230 acquisition time points from May 26, 2018 ...
DOI: 10.1016/J.JPOWSOUR.2020.228964 Corpus ID: 224923318 Fault diagnosis and abnormality detection of lithium-ion battery packs based on statistical distribution @article{Xue2021FaultDA, title={Fault diagnosis and abnormality detection of lithium-ion battery packs based on statistical distribution}, author={Qiao Xue and Guang …
The fault diagnosis function of the battery management system (BMS) is crucial for battery pack safety and reliable operation. This paper proposes a new series-parallel connected battery pack voltage measurement design scheme, which can save voltage sensors number from n to 0.75n for n cells in series. The multi-fault diagnosis strategy is …
Semantic Scholar extracted view of "Voltage fault detection for lithium-ion battery pack using local outlier factor" by Zonghai Chen et al. DOI: 10.1016/J.MEASUREMENT.2019.06.052 Corpus ID: 198478201 Voltage fault detection for lithium-ion battery pack using
This method uses non-redundant interleaved voltage measurement topology to detect battery voltages, where every voltage sensor measures the sum of …
DOI: 10.1016/J.JPOWSOUR.2016.11.007 Corpus ID: 113840255; A correlation based fault detection method for short circuits in battery packs @article{Xia2017ACB, title={A correlation based fault detection method for short circuits in battery packs}, author={Bing Xia and Yunlong Shang and Truong Q. Nguyen and Chris Mi}, journal={Journal of Power …
Semantic Scholar extracted view of "A multi-fault diagnostic method based on an interleaved voltage measurement topology for series connected battery packs" by Yongzhe Kang et al. DOI: 10.1016/J.JPOWSOUR.2019.01.058 Corpus ID: …
This article concerns the issue of data-driven fault diagnosis for series lithium-ion battery pack. A voltage correlation-based statistical analysis method is proposed. First, the voltage of each cell within the battery pack is measured independently, and the correlation coefficient (CC) between the voltages of adjacent cells is calculated. Then, all the CC …
Data-Driven Thermal Anomaly Detection in Large Battery ...
In Figure 2, Vehicle #C2 was a failed vehicle with a power supply system consisting of 95 battery cells connected in series to form a power battery pack. #Cell 47 in the battery pack showed a sudden voltage drop at the 425th sampling moment, which was confirmed to be caused by a weak internal short circuit in the battery cell.
Semantic Scholar extracted view of "A multi-fault diagnostic method based on an interleaved voltage measurement topology for series connected battery packs" by Yongzhe Kang et al. ... of model-based and entropy methods is proposed to detect and isolate multiple types of faults, including current, voltage, and temperature sensor faults, …
The fault diagnosis function of the battery management system (BMS) is crucial for battery pack safety and reliable operation. This paper proposes a new series …
This paper proposes a new series-parallel connected battery pack voltage measurement design scheme, which can save voltage sensors number from n to 0.75n for n cells in series. The multi-fault diagnosis strategy is proposed by analyzing the law of battery …
This paper presents a fault detection method for short circuits based on the correlation coefficient of voltage curves. The proposed method utilizes the direct voltage measurements from the battery cells, and does not require any additional hardware or effort in modeling during fault detection. Moreover, the inherent mathematical properties of the …
Prediction and Diagnosis of Electric Vehicle Battery Fault ...
The first layer strategy is like the threshold-based fault detection method, if the battery voltage is lower than the discharge cut-off voltage, the battery is considered to have an over discharge fault. ... Multi-fault diagnosis for series-connected lithium-ion battery pack with reconstruction-based contribution based on parallel PCA-KPCA ...
A battery-management system''s ability to accurately measure parameters such as pack voltage, charging/discharging current, individual cell voltages, battery disconnection in abnormal conditions, charge stored by
A battery management system (BMS) ensures performance, safety and longevity of a battery energy storage system in an embedded environment. One important task for a BMS ...
Let''s consider a simple example with two batteries connected in series. Battery A has a voltage of 6 volts and a current of 2 amps, while Battery B also has a voltage of 6 volts and a current of 2 amps. When connected in series, the total voltage would be 12 volts, and the total current would remain at 2 amps.
A novel dual time-scale voltage sensor fault diagnosis for battery pack is proposed. • All in-pack cells are artificially divided into two different classes. • Two different time-scales are used to diagnose the fault of two classes of cells. • …
For instance, when the battery pack is being charged, an abnormal voltage signal may indicate over-voltage or under-voltage faults, even other parameters look normal. From this point of view, one can conclude that the fault type needs to be determined according to not only the immediate measure, but the variation range of …
Semantic Scholar extracted view of "Online multi-fault detection and diagnosis for battery packs in electric vehicles" by Yongzhe Kang et al. DOI: 10.1016/j.apenergy.2019.114170 Corpus ID: 213892374 Online multi-fault detection and diagnosis for battery packs in
In order to suppress leakage current caused in the traditional multi-cells series Li-ion battery pack protection system, a new battery voltage transfer method is presented in this paper, which uses the current generated in the transfer process of one of the batteries to compensate for the leakage of itself and other cells except the top cell. …