Battery Pack Detection Method
： A battery internal short-circuit detection apparatus includes: a voltage detection unit for detecting a terminal voltage of the battery; a current detection unit for detecting a discharging current of the battery; a voltage drop and recovery detection unit for detecting a momentary voltage drop of the battery and a recovery from the voltage drop, in …
Battery internal short-circuit detection apparatus and method, and ...
： A battery internal short-circuit detection apparatus includes: a voltage detection unit for detecting a terminal voltage of the battery; a current detection unit for detecting a discharging current of the battery; a voltage drop and recovery detection unit for detecting a momentary voltage drop of the battery and a recovery from the voltage drop, in …
A New Method of Lithium Battery Insulation Fault Diagnosis …
Taking into account the nonlinearity of the battery pack and the detection accuracy, an equivalent model for battery pack insulation detection is established, and the double Kalman filter algorithm is used to identify the model parameters, which solves the problem that the convergence ability of the commonly used recursive least squares method ...
Battery internal short-circuit detection apparatus and method, and ...
Definitions. the present invention relates to an apparatus and method for detecting an internal short circuit in a nonaqueous electrolyte secondary battery that has, between a negative electrode and a positive electrode thereof, a heat-resistant layer composed of a porous protective film or the like containing a resin binder and an inorganic oxide filler, a nonaqueous electrolyte …
Internal short circuit detection method for battery pack based on ...
The battery pack based on the individual DP (dual polarization) battery model is established to verify the ISCr detection method. The 1–1000 Ω s ISCr (the early stage ISCr) can be effectively detected within 1–125 s. The SLCT provides the possibility of new battery pack designs and new battery management methods.
Multi-fault diagnosis for series-connected lithium-ion battery pack ...
The results showed that the ensemble Shannon entropy can accurately predict the time and location of a connection fault. Ma et al. [12] proposed a detection method of virtual connection fault in a series-connected battery pack through an improved Z-score. The cross-voltage test was applied to isolate the connection fault and internal resistance ...
Internal short circuit detection for lithium-ion battery pack with ...
In this research, an ISC detection method based on the symmetrical loop circuit topology (SLCT) of the parallel-series hybrid electric connections is introduced. This …
Model based insulation fault diagnosis for lithium-ion battery pack …
The conventional insulation detection methods include the voltmeter method, the electric bridge method, and the signal injection method. The voltmeter method provides an off-line method for insulation detection which cannot be …
Review of Abnormality Detection and Fault Diagnosis Methods for …
The ANN method takes the battery measurement data as the input and the fault cause as the output. Zhao et al. proposed an intelligent diagnostic method for battery systems based on big data . The fault detection was carried out in a probabilistic manner using the 3σ multi-level screening strategy.
A correlation based detection method for internal short circuit in ...
This manuscript proposes a fault detection method for internal short circuits in battery packs based on the correlation coefficient. Compared to the threshold and model based detection algorithms, the proposed method is more robust to inconsistent battery cells, and does not require any preliminary effort in modeling and online identification. In order to implement this …
Battery internal short-circuit detection apparatus and method, and ...
The present invention relates to an apparatus and method for detecting an internal short circuit in a nonaqueous electrolyte secondary battery that has, between a negative electrode and a positive electrode thereof, a heat-resistant layer composed of a porous protective film or the like containing a resin binder and an inorganic oxide filler, a nonaqueous electrolyte …
Internal short circuit detection for lithium-ion battery pack with ...
This method can detect the ISC of the parallel battery pack and improve the detection time from hours to seconds. Show abstract Safety concerns are the main obstacle to large-scale application of lithium-ion batteries (LIBs), and thus, improving the safety of LIBs is receiving global attention.
Detection Method for Soft Internal Short Circuit in Lithium-Ion Battery ...
These three detection methods for the battery pack have a common constraint: all terminal voltages of the individual cells in the battery pack must be provided. If many battery cells are connected in series in the battery pack, many channels with high accuracy and high sample rate for measuring all the individual cell voltages increase the cost ...
Li-ion Battery Fault Detection in Large Packs Using Force and …
In particular, we develop d a fast and hig confidence level detection method of hard inter al short circuit events f r a battery pack by measuring cell expansion force and monitoring CO2 concentrations in a pack enclosure.
Internal short circuit detection for battery pack using equivalent ...
An ISCr detection method is developed based on battery consistency within the battery pack. The ISCr detection method employs the recursive least square (RLS) algorithm based on the mean-difference model (MDM), which is derived from the ECMs consisting of the mean and difference value of cells'' voltage and resistance. The algorithm first ...
US8285501B2
A battery pack includes: a plurality of batteries; a detection section to measure a voltage of each of the plurality of batteries to obtain a voltage variation of each of the plurality of batteries at different lapse times and compare the obtained voltage variations to thus detect whether at least one of the plurality of batteries has been replaced; and a controller to disable, when a result ...
Short Circuit Fault Diagnosis for a Parallel Lithium-Ion Battery Pack ...
This paper proposes a soft short circuit (SC) fault detection method for a parallel battery pack. Since it is impractical to equip current sensors for all the cells in a parallel pack, a reconstructed state-space equation combining the electrical dynamic of a battery cell and the electrical characteristics of a parallel battery pack is designed ...
Voltage-fault diagnosis for battery pack in electric vehicles using ...
Signal analysis-based method: The signal analysis-based method focuses on analyzing the battery voltage signals directly, including extracting the correlation between voltages, curves analysis, etc. By delving into these signals, features related to the cell fault can be identified. The method mainly collects voltage signals and compares them with a certain …
Detection Method for Soft Internal Short Circuit in Lithium-Ion Battery ...
These three detection methods for the battery pack have a common. constraint: all terminal voltages of the individual cells in the battery pack must be provided.
Frontiers | A Fault Diagnosis Method for Lithium-Ion Battery …
The results show that the method developed by Zhang et al. can be used to identify photovoltaic array faults. Kara (2021) developed a fault diagnosis method combing …
Internal short circuit detection method for battery pack based on ...
In this work, a new ISCr detection method based on the symmetrical loop circuit topology (SLCT) is introduced. The SLCT ensures that every battery has the same priority in …
Mechanism, modeling, detection, and prevention of the internal …
Most current ISC detection methods are based on the electrical and thermal characteristics of the battery during the whole life cycle. According to the internal temperature and voltage drop of LIBs, ... As shown in Fig. 8 (b), the CMM represents the average performance of the battery pack, ...
Anomaly Detection Method for Lithium-Ion Battery …
Aiming at the phenomenon of individual battery abnormalities during the actual operation of electric vehicles, this paper proposes a lithium-ion battery anomaly detection method based on the STL and improved …
Internal short circuit detection for lithium-ion battery pack with ...
DOI: 10.1016/j.jclepro.2020.120277 Corpus ID: 213338368; Internal short circuit detection for lithium-ion battery pack with parallel-series hybrid connections @article{Yue2020InternalSC, title={Internal short circuit detection for lithium-ion battery pack with parallel-series hybrid connections}, author={Pan Yue and Xuning Feng and Zhang Mingxuan and Xuebing Han and …
Battery Internal Short Circuit Detection
Most of the existing researches take the single battery as the detection object. An ISCr detection method for battery pack based on equivalent parameter and consistency method was proposed by the authors'' research team (6). The method can quickly find the early stage ISCr in series circuits by both the nominal parameter change and the true
A real-time insulation detection method for battery packs used in ...
A novel detection method based on unbalance bridge is proposed in Ref. [22], which overcomes the shortcomings of the balanced bridge method. Even if the bilateral insulation resistances drop at the same time, this method can also accurately detect the insulation resistance. ... The topology of the battery pack insulation detection is shown in ...
(PDF) An insulation diagnosis method for battery pack …
An insulation diagnosis method for battery pack based on battery model. ... Va rious insulation resistance models of electric v ehicle and detection methods have been .
A novel dual time-scale voltage sensor fault detection and …
To date, model-based SOC estimation methods for battery pack can be roughly divided into "each cell" method [26], "big cell" method [27] and "representative cell" [28] method. Just as its name implies, in "each cell" method, the SOC of each in-pack cell needs to be primarily monitored and the battery pack SOC is further calculated.
A quantitative method for early-stage detection of the internal …
In this section, the effectiveness of the proposed method is experimentally verified. We start in Section 4.1 with the most common cases, in which an LFP battery pack is controlled by the passive balancing system. Then, we check the experimental results using an active balancing system and NCM battery pack in Section 4.2.
Multi-scale Battery Modeling Method for Fault Diagnosis
Early detection can provide enough time for the prevention of battery pack spontaneous thermal runaway and other accidents and greatly improve safety. The electrochemical model can be used to monitor the battery state which may change under severe working conditions. ... proposed an outlier-based battery voltage fault detection method. This ...
A comprehensive review of DC arc faults and their mechanisms, detection ...
It can be seen that there is still a lack of in-depth research on arc fault detection methods for battery systems [32, 36]. Due to the complex circuit structure and electrical connection problems, future work will focus on improving the ability to judge and extract arc fault information effectively. ... A battery pack is formed when several ...
Research on a fast detection method of self-discharge of lithium battery
The existing self-discharge rate detection methods include the definition method, capacity retention method, and open-circuit voltage decay method [5].The definition method is to charge the battery to be tested to a specific SOC (State Of Charge) at a standard charging rate and stand for a period of time, discharge the battery after standing, obtain its …
Anomaly Detection Method for Lithium-Ion Battery Cells Based on …
Abnormalities in individual lithium-ion batteries can cause the entire battery pack to fail, thereby the operation of electric vehicles is affected and safety accidents even occur in severe cases. Therefore, timely and accurate detection of abnormal monomers can prevent safety accidents and reduce property losses. In this paper, a battery cell anomaly detection …
Multi-fault detection and diagnosis method for battery packs …
A sensor fault diagnosis method for a lithium-ion battery pack in electric vehicles. IEEE Trans Power Electron, 34 (10) (2019), pp. 9709-9718. Crossref View in Scopus Google Scholar ... Voltage fault detection for lithium-ion battery pack using local outlier factor. Measurement, 146 (2019), pp. 544-556. View PDF View article View in Scopus ...
(PDF) An Online Adaptive Internal Short Circuit Detection Method …
An Online Adaptive Internal Short Circuit Detection Method of Lithium-Ion Battery. January 2021; Automotive Innovation 4(5) DOI: ... The power battery pack is the energy storage device of HEV, ...
An Online Adaptive Internal Short Circuit Detection …
Internal short circuit (ISC) is a critical cause for the dangerous thermal runaway of lithium-ion battery (LIB); thus, the accurate early-stage detection of the ISC failure is critical to improving the safety of electric …