The raw physical variables, such as voltage and current, are monitored for the lithium-ion batteries. Due to the randomness of charging/discharging process, it is unrealistic to collect whole cycle data in practical application. The partial charging/discharging data are used for further analysis.
This research provides a reliable method for the analysis and evaluation of the charging and discharging characteristics of lithium batteries, which is of great value for improving the safety and efficiency of lithium battery applications.
In contrast, the voltage and current features alone cannot effectively capture the internal degradation law of lithium-ion batteries, resulting in larger errors, particularly in the latter part of the battery's life.
However, it is difficult to obtain enough charging/discharging data of lithium-ion batteries in industrial scenarios. The internal physicochemical mechanism of different types of lithium-ion batteries and charging/discharging protocols is not exactly the same.
Experimental results show that this method can effectively measure the actual voltage of lithium-ion battery under different rated voltages, and the measured voltage waveform is very stable and almost without distortion.
The charge/discharge capacity of the battery is Q. The functional relationship between capacity and battery voltage, positive voltage and negative voltage are V B (Q), V p (Q), V n (Q), respectively. Then according to formula (1), the following formula can be obtained.
The data analysis results of the battery charge and discharge voltage show that the charge voltage of the lithium-titanate battery gradually increases with the decrease of temperature, …
Figure 2: A typical individual charge/discharge cycle of a Lithium sulfur battery electrode in E vs. Capacity [1]. The E vs. Capacity curve makes it possible to identify the different phase changes involved in the …
1 · Discharge mode: Discharging was conducted at a constant current level of 2 A until the battery voltage dropped to 2.7 V, 2.5 V, 2.2 V and 2.5 V for battery B0005, B0006, B0007 and …
The Low-current OCV test used a small current (e.g. C/20, C/25) to charge and discharge the battery so that the corresponding terminal voltage is an approximation of OCV. The test execution steps are: Charge battery to cut-off …
This article provides a discussion and analysis of several important and increasingly common questions: how battery data are produced, what data analysis techniques are needed, what the existing data analysis …
An increasing number of electric vehicles are using Li-ion batteries of the Lithium Ferro-Phosphate (LFP) type. Therefore, it''s imperative to guarantee that the vehicle maintains a high …
Lithium‐ion batteries generate considerable amounts of heat under the condition of charging‐discharging cycles. This paper presents quantitative measurements and …
Fourteen publicly available datasets are reviewed in this article and cell types, testing conditions, charge/discharge profiles, recorded variables, dates of experiments, and …
Operating temperature of lithium-ion battery is an important factor influencing the performance of electric vehicles. During charging and discharging process, battery …
5 · The solution of various solvers for the PDE about the lithium diffusivity in the solid electrode region for (A) a negative electrode and (B) a positive electrode under discharge-rest, …
This article provides a discussion and analysis of several important and increasingly common questions: how battery data are produced, what data analysis …
5 · The solution of various solvers for the PDE about the lithium diffusivity in the solid electrode region for (A) a negative electrode and (B) a positive electrode under discharge-rest, …
Fourteen publicly available datasets are reviewed in this article and cell types, testing conditions, charge/discharge profiles, recorded variables, dates of experiments, and links to the...
Therefore, data cleaning and optimization is processed and the capacity of a battery pack is identified subsequently in combination with the improved two-point method. The current available capacity is obtained by a …
In our increasingly electrified society, lithium–ion batteries are a key element. To design, monitor or optimise these systems, data play a central role and are gaining increasing …
Lithium-ion batteries degrade in complex ways. This study shows that cycling under realistic electric vehicle driving profiles enhances battery lifetime by up to 38% …
For instance, Li et al. [9] proposed a battery health prediction method based on partial discharge information, utilizing Gaussian process regression model to evaluate battery …
Lithium-ion batteries (LIBs), with excellent performance, such as high energy density, low self-discharge, and long service life, have become the primary power sources in …
The lithium iron phosphate battery (LiFePO 4 battery) or lithium ferrophosphate battery (LFP battery), is a type of Li-ion battery using LiFePO 4 as the cathode material and a …
In this paper, based on the electrochemical-mechanical-thermal coupling model, the growth of SEI film, lithium plating side reaction, active material loss caused by the …
In order to accurately estimate the capacity of lithium-ion batteries, the deep model, which maps the extracted capacity increment features from charging/discharging data …
The Low-current OCV test used a small current (e.g. C/20, C/25) to charge and discharge the battery so that the corresponding terminal voltage is an approximation of OCV. The test …
The experimental data recorded is: battery voltage, current, charging/discharging capacity and energy. Diao et al. [12] provide a dataset considering the influence of ambient …
Three key parameters of lithium battery charging and discharging process are fused to analyze the charging and discharging characteristics of lithium battery. Experimental …