Abstract: Cell inconsistency is a common problem in the charging and discharging of lithium-ion battery (LIB) packs that degrades the battery life. In situ, real-time data can be obtained from
The battery capacity testing equipment and automatic battery cell sorting machine produced by WinAck Battery can greatly improve the cell consistency. In addition, the highly automated battery pack assembly line integrates assembly and
The importance of cell consistency to battery packs is self-evident, as it is directly related to the performance, life and safety of battery packs. The control of cell
DOI: 10.1016/J.APENERGY.2017.05.176 Corpus ID: 114113510; Study on battery pack consistency evolutions and equilibrium diagnosis for serial- connected lithium-ion batteries @article{Zhang2017StudyOB, title={Study on battery pack consistency evolutions and equilibrium diagnosis for serial- connected lithium-ion batteries}, author={Caiping Zhang and Yan Jiang
To solve this problem, a non-destructive testing method for capacity consistency of lithium-ion battery pack based on 1-D magnetic field scanning is proposed in this article. First, a magnetic field simulation model and measurement setup of lithium-ion battery are developed to study the principle of detection technology. On such basis, a
The battery capacity testing equipment and automatic battery cell sorting machine produced by WinAck Battery can greatly improve the cell consistency. In addition, the highly automated battery pack assembly line integrates assembly and testing, which is controlled from the assembly production stage to ensure the consistency of the battery pack.
Lithium-ion batteries (LIBs) are widely used in electric vehicles (EVs). The internal resistance consistency is essential to the performance and safety of LIB packs. To detect the consistency of the LIB cell efficiently, an approach using the unbalanced current is proposed. First, a simple bridging circuit model with four LIB cells is built based on the first-order Thevenin equivalent
Inconsistent cell SOC in a battery pack is common, hence, such uncertainty should not be ignored for pack SOC estimation using the Coulomb counting. Based on the
Battery packs are applied in various areas (e.g., electric vehicles, energy storage, space, mining, etc.), which requires the state of health (SOH) to be accurately estimated. Inconsistency, also known as cell variation, is
The battery capacity testing equipment and automatic battery cell sorting machine produced by WinAck Battery can greatly improve the cell consistency. In addition, the highly automated battery pack assembly line integrates assembly and
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},
6 天之前· During the service process of lithium-ion battery packs, there is inconsistency among the cells in the pack, resulting in a significant decline in battery performance and affecting the battery pack life.
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
Within the module, reducing the number of batteries in series or increasing the parallel branches will reduce the battery pack consistency and increase the average temperature rise and cell-to-cell temperature difference. When the number of parallel branches was the same, the battery consistency in the parallel-first topology module was better than that in the series
These accelerate the capacity fade of a specific cell in the battery pack. Battery inconsistency directly influences the energy and capacity utilization efficiency of a battery pack. Different approaches have been developed to reduce inconsistency before battery pack assembling [22], [23]. In Ref. [22], experimental charge/discharge voltage signals were
The article systematically analyzes the influence of parameters variation on battery pack consistency based on the statistical distribution properties of the capacity, internal resistance and the SOC of a battery pack. It concludes that the SOC variation contributions the most to battery consistency from the perspective of energy utilization
Inconsistent cell SOC in a battery pack is common, hence, such uncertainty should not be ignored for pack SOC estimation using the Coulomb counting. Based on the Coulomb counting in Eq....
When considering time, consistency involves maintaining all characteristic parameters throughout the entire life cycle of all cells in the lithium-ion battery pack. This helps reduce capacity reduction inconsistency, internal resistance growth inconsistency, and aging rate inconsistency.
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 identified as feature parameters from electric vehicle operation data.
The article systematically analyzes the influence of parameters variation on battery pack consistency based on the statistical distribution properties of the capacity, internal
When considering time, consistency involves maintaining all characteristic parameters throughout the entire life cycle of all cells in the lithium-ion battery pack. This helps reduce capacity reduction inconsistency, internal resistance
The grouping and large-scale of battery energy storage systems lead to the problem of inconsistency. Practical consistency evaluation is significant for the management, equalization and maintenance of the battery system. Various evaluation methods have been developed over the past decades to better assess battery pack consistency. In these research efforts, the
Abstract: Cell inconsistency is a common problem in the charging and discharging of lithium-ion battery (LIB) packs that degrades the battery life. In situ, real-time data can be obtained from the battery energy storage system (BESS) of an electric boat through telemetry. This article examined the use of a 57-kWh BESS comprising six battery
The importance of cell consistency to battery packs is self-evident, as it is directly related to the performance, life and safety of battery packs. The control of cell consistency and the screening of cells into groups are both systematic projects, which require consideration of multiple dimensions such as cell design, production, quality
To minimize the cell-to-cell variations, from the perspective of the manufacturing process, Kizilel at al [6]. and Khateeb at al [7]. conducted a thermal management study on the consistency of the temperature rise of the battery pack.They all use phase change materials to control the inconsistency of the temperature rise of the battery pack, so that the battery pack
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
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 online based on EV operation data to monitor battery safety
Li et al. [38] proposed an evaluation method for voltage consistency of lithium-ion battery packs in EVs based on the Mahalanobis-Taguchi system, and the first and second-level warning thresholds were set to examine the consistency features extracted through sample entropy and fast-dynamic time warping. Recently, Liu et al. [39] conducted fault diagnosis and
To solve this problem, a non-destructive testing method for capacity consistency of lithium-ion battery pack based on 1-D magnetic field scanning is proposed in this article.
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 .
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.
This is the first application of the MTS in the evaluation of battery pack consistency. The MTS has a complete mathematical theory and fast operation speed, and a two-level inconsistency warning is determined using the Chebyshev theorem.
The results show that the proposed method can accurately diagnose the capacity consistency of the tested battery pack, which provides a basis for battery pack performance testing and maintenance. The capacity inconsistency among commercial lithium-ion battery packs is an important factor affecting their service life.
The results indicated that the consistency of the battery pack gradually deteriorated with EV operation over a long time scale. Specifically, for the two test EVs, the increment rates of the first-level consistency warning were 0.6554 % and 0.8243 % and those of the second-level consistency warning were 0.3413 % and 0.4553 %, respectively.
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 .
We are deeply committed to excellence in all our endeavors.
Since we maintain control over our products, our customers can be assured of nothing but the best quality at all times.