A Method for Consistency Determination of Battery Energy
A Method for Consistency Determination of Battery Energy Storage System Based on Fuzzy Comprehensive Evaluation Yu Cai, Shufeng Dong and Jiaxiang Wang system could consist of hundreds of battery packs and the battery pack is composed by hundreds of cells in series. The battery cells impact with each other, in another
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(PDF) Consistency Evaluation of Electric Vehicle Battery
This paper presents an online estimation algorithm of insulation resistance based on an adaptive filtering algorithm for a battery energy storage system. Specifically, the insulation detection
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Research on Multi-Parameter Evaluation of Electric Vehicle
Electric vehicle power battery consistency is the key factor affecting the performance of power batteries. it is not scientific to evaluate the consistency of the battery depending on voltage or capacity. In this paper, multi-parameter evaluation method for battery consistency based on principal component analysis is proposed. Firstly, the characteristic
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Performance of inconsistency in lithium-ion battery packs for battery
Inconsistency is common in lithium-ion battery packs and it results in voltage differences. Data from a battery pack with 200 cells connected in serial in a battery energy storage system (BESS
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A Method for Consistency Determination of Battery Energy
A method to evaluate the consistency of battery packs was proposed in this article. With such evaluation, the administrator of the energy storage system could understand the deterioration of the battery packs and remove the abnormal state to avoid the potential failures and extend the battery life.
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Consistency evaluation and cluster analysis for lithium-ion battery
DOI: 10.1016/j.energy.2020.116944 Corpus ID: 213175255; Consistency evaluation and cluster analysis for lithium-ion battery pack in electric vehicles @article{Tian2020ConsistencyEA, title={Consistency evaluation and cluster analysis for lithium-ion battery pack in electric vehicles}, author={Jiaqiang Tian and Yujie Wang and Chang Liu and Zonghai Chen}, journal={Energy},
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Consistency evaluation and cluster analysis for lithium-ion battery
Highlights • Consistency evaluation based on multi-feature weighted for batteries is proposed. • The weights of features are determined by the entropy weight method. •
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Assessment of the battery pack consistency using a heuristic
Signal processing-based methods: The consistency of the battery pack can be directly reflected through a signal processing process of the measurement such as voltage [14], current [15], temperature [16], and electrochemical impedance spectrum (EIS) [17].Wang et al. [18] employed the square of the standard deviation coefficient (SDC) to evaluate the
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Study on battery pack consistency evolutions and equilibrium diagnosis
The SOC consistency of battery pack can be employed as evaluation index representing the battery consistency level. As is known, the SOC-OCV function is a representative for a particular battery, and is generally a nonlinear monotone function between SOC and OCV for all lithium-ion batteries.
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Consistency evaluation and cluster analysis for lithium-ion battery
Consistency is an essential factor affecting the operation of lithium-ion battery packs. Pack consistency evaluation is of considerable significance to the usage of batteries. Many existing methods are limited for they are based on a single feature or can only be implemented offline. This paper develops a comprehensive method to evaluate the
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Robust Diagnosis of Capacity and SOC Consistency in Battery Pack
Accurate consistency diagnosis of series-connected battery packs is crucial for the safety management of lithium-ion batteries. However, traditional methods for extracting and
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CN111693884A
The embodiment of the invention discloses a battery pack consistency detection method and device, a readable storage medium and electronic equipment. And determining a differential curve for representing the phase change process of the active substances in each single battery according to the cell voltage and the charging capacity. And detecting the consistency of the
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(PDF) Consistency Evaluation of Electric Vehicle
Consistency Evaluation of Electric Vehicle Battery Pack: Multi-feature Information Fusion Approach November 2023 IEEE Transactions on Vehicular Technology 72(11):14103-14114
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Study on battery pack consistency evolutions and equilibrium diagnosis
The SOC consistency of battery pack can be employed as evaluation index representing the battery consistency level. As is known, the SOC-OCV function is a representative for a particular battery, and is generally a nonlinear monotone function. Application of battery equilibrium diagnosis.
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Associations of Battery Cell Voltage Consistency with Driving
With the rapid development of electric vehicles (EVs), there is a growing concern about the safety issues of their traction batteries [1], [2], [3] order to meet the driving power demand and obtain the desired vehicle range, hundreds or even thousands of cells are connected in a series-parallel structure within a battery pack [4], [5], [6].
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What is Inconsistency in the Battery Packs? And how
Complete consistency in the battery pack is almost non-existent. What we can do is to minimize the inconsistency as much as possible. In addition, this method reduces the battery pack utilization rate, which is not
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Evaluation method for consistency of lithium-ion battery packs in
The inconsistencies in battery packs were detected at high state of charge (SOC) levels at the end of charging. This method can evaluate the consistency of battery packs
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An evaluation method of battery DC resistance consistency caused
Direct current internal resistance (DCIR) is a key parameter to determine consistency of power characteristics of a battery pack. This consistency is influenced by batteries'' internal temperature, which reflects consistency of the batteries'' thermal characteristics inherently. In this paper, an evaluation method for thermal consistency of batteries'' DCIR is proposed.
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Consistency evaluation of Lithium-ion battery packs in electric
Currently, the battery pack consistency evaluation indicators are unclear and are roughly divided into single-parameter and multi-parameter evaluations. electromotive force of the lithium-ion battery after current interruption for an accurate state-of-charge and capacity determination [J] Appl. Energy, 111 (2013), pp. 416-427.
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Fault diagnosis for cell voltage inconsistency of a battery pack in
In practical application, single-cell is unable to satisfy the voltage, current and energy requirements for EV. Hundreds or thousands of individual cells need to be connected in series/parallel configuration to construct battery packs in order to provide sufficient voltage, current, power and energy for EV [7, 8].Unfortunately, cell differences always exist and are
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A Method for Consistency Determination of Battery Energy
A method to evaluate the consistency of battery packs was proposed in this article. With such evaluation, the administrator of the energy storage system could understand
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A Method for Consistency Determination of Battery Energy
Download Citation | On Jan 1, 2020, Yu Cai and others published A Method for Consistency Determination of Battery Energy Storage System Based on Fuzzy Comprehensive Evaluation | Find, read and
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International Journal of Energy Research
The optimization algorithm was tested on a 3P4S air-cooled battery pack from an electric scooter. It improved the pack''s consistency of state of charge (SOC) and its lifespan by reducing its heat and temperature gradient. Under on-design conditions, the optimized air ducts reduced the maximum pack temperature by 0.45°C and the difference
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A novel battery pack inconsistency model and influence degree
The coupling mechanism between parameters is extremely complex, and these parameters are still assumed to be independent of each other in most existing battery pack consistency models. Jiang [13] et al. used the Copula function for the first time to model battery pack inconsistency. However, the applied three-dimensional basis functions are few
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Battery pack consistency modeling based on generative
Take the three most important parameters of batteries: SOC, capacity and internal resistance for example. The difference of SOC affects the SOE of battery pack [9], which can be adjusted by the equalization module.However, due to the cost and space limitation, EV built-in equalization module cannot maintain the consistency of SOC of all batteries.
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A critical review on inconsistency mechanism
A battery pack consistency evaluation method based on multi-feature weighting is proposed. To comprehensively characterize the behavior of the battery pack, Zou et al. [129] considered five factors including voltage, temperature, internal resistance, capacity and electricity. The weights are decided by the analytical hierarchy process.
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481237_1_En_15_Chapter 193..204
Abstract A method to evaluate the consistency of battery packs was proposed in this article. With such evaluation, the administrator of the energy storage system could understand the
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Improving battery thermal behavior and consistency by
Secondly, the battery consistency is integrated into the structure design and determination of operation parameter for the BTMS, which extends the goal of BTMS design from the temperature and temperature difference to the performance and safety of battery. The battery pack has a total length of 96 mm, a total width of 78 mm, and a total
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What is Inconsistency in the Battery Packs? And how
Complete consistency in the battery pack is almost non-existent. What we can do is to minimize the inconsistency as much as possible. In addition, this method reduces the battery pack utilization rate, which is not conducive to the
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A Copula-based battery pack consistency modeling method and
The consistency of battery cells directly influences the maximum available energy and the efficiency of the battery pack, and the energy utilization efficiency (EUE) is a
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Research on equalization scheme of lithium-ion battery packs
In the literature [26], the battery to be equalized is determined by means of cluster analysis, but the determination of the initial clustering center has the disadvantage of randomness, which ensures the consistency of the equalized battery packs and improves the equalization speed and energy utilization rate. This article has the
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A new method for lithium-ion battery uniformity sorting based
Determination of internal criteria for uniformity sorting. Study on Battery Pack Consistency Evolutions during Electric Vehicle Operation with Statistical Method. Energy Procedia (2017) Y. Zheng et al. Lithium ion battery pack power fade fault identification based on Shannon entropy in electric vehicles.
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Internal short circuit detection for lithium-ion battery pack
Internal short circuit is one of the unsolved safety problems that may trigger the thermal runaway of lithium-ion batteries. This paper aims to detect the internal short circuit that occurs in battery pack with parallel-series hybrid connections based on the symmetrical loop circuit topology.The theory of the symmetrical loop circuit topology answers the question that:
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Internal short circuit detection for lithium-ion battery pack
Internal short circuit detection for battery pack using equivalent parameter and consistency method J. Power Sources, 294 ( 2015 ), pp. 272 - 283, 10.1016/j.jpowsour.2015.06.087 View PDF View article View in Scopus Google Scholar
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Consistency Evaluation of Electric Vehicle Battery Pack: Multi
In this work, a battery pack consistency evaluation approach is proposed based on multi-feature information fusion. Ohmic resistance, polarization resistance and open circuit voltage are
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Energy state of health estimation for battery packs based on the
[19] Zhang, Caiping, et al. "Study on battery pack consistency evolutions and equilibrium diagnosis for serial-connected lithium-ion batteries." Applied Energy (2017). elationship between the SOHE and inter- cell parameter variation is first analysed in this paper. It is shown that the degradation and inconsistency of the battery pack are both
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CN111693884A
The battery pack consistency detection method provided by the embodiment of the invention can detect the consistency of the battery pack in the charging process of the applied battery pack,
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How to analyze the quality of lithium battery pack
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View more6 FAQs about [Battery Pack Consistency Determination]
How to evaluate lithium-ion battery pack consistency?
Consistency evaluation features can be extracted online. An improved fuzzy clustering algorithm is developed to evaluate pack consistency. The proposed methods are validated by nine months of electric vehicle data. Consistency is an essential factor affecting the operation of lithium-ion battery packs.
What are battery pack consistency evaluation indicators?
Currently, the battery pack consistency evaluation indicators are unclear and are roughly divided into single-parameter and multi-parameter evaluations. Single-parameter evaluation usually uses voltage or SOC to characterize the consistency of the battery pack .
How to determine battery pack consistency?
First, the capacity of each cell in the battery pack Qi, the difference in remaining chargeable capacity of each cell when the battery pack reaches the charge cutoff condition Qdi, and the internal resistance of each cell Ri are determined to accurately characterize the battery pack consistency.
How to diagnose a battery pack inconsistency?
Considerable research efforts have been devoted to the diagnosis and evaluation of battery pack consistency. To diagnose faults and provide early warning of the inconsistencies, existing methods can be mainly divided into model-based and data-driven methods .
How to evaluate battery pack consistency online during EV charging?
The proposed consistency evaluation framework can be deployed on the monitoring platform to evaluate the battery pack consistency online during EV charging based on vehicle cloud information interaction. The remainder of this paper is organized as follows: Section 2 describes data acquisition and compression.
Why is consistency important in battery packs?
The evaluation of consistency in battery packs is therefore crucial. The initial consistency concerns the differences between batteries, even for those manufactured in the same batch .
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