Charging Electric Vehicles Today and in the Future

Leijon, Jennifer; Boström, Cecilia

doi:10.3390/wevj13080139

Cited by 40 publications

(29 citation statements)

References 97 publications

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“…block before the function activation of the second layer, 1 w and 2 w denote the weights of the first and second residual block, and…”

Section: Experimental Configuration and Evaluation Metricsmentioning

confidence: 99%

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Research on Appearance Detection, Sorting, and Regrouping Technology of Retired Batteries for Electric Vehicles

Liu,

Chen,

Qin

et al. 2023

Sustainability

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The rapid proliferation of electric vehicle adoption has brought about significant changes in energy consumption patterns, but improper disposal of retired batteries poses new challenges to the environment. In order to promote the sustainable development of the industry using retired batteries, this paper focuses on the research on retired battery appearance detection, sorting, and regrouping technologies. Firstly, the standards for retired battery appearance detection are analyzed, and a method of acquiring battery appearance features through two-stage image acquisition is proposed. Machine vision is employed to achieve the appearance filtering of retired batteries, overcoming the shortcomings of manual screening. For the filtered batteries, capacity, internal resistance, and open-circuit voltage are determined as indicators. Analytic hierarchy process and Gray relation analysis are employed for classification based on four application scenarios. Additionally, an improved Gaussian mixture model clustering algorithm is proposed. In the recombination process, the algorithm parameters are adaptively adjusted for each battery category. Experimental results demonstrate that the accuracy of battery appearance filtering exceeds 97%, and the improved algorithm effectively enhances the consistency among batteries. Compared to the baseline algorithm, the performance consistency of regrouping batteries is increased by more than 5%.

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“…block before the function activation of the second layer, 1 w and 2 w denote the weights of the first and second residual block, and…”

Section: Experimental Configuration and Evaluation Metricsmentioning

confidence: 99%

“…The rapid development of electric vehicles has provided humans with a clean and efficient way to travel, and their market share is gradually increasing [1,2]. Along with the booming development of electric vehicles, the production of power batteries has also shown growth [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Research on Appearance Detection, Sorting, and Regrouping Technology of Retired Batteries for Electric Vehicles

Liu,

Chen,

Qin

et al. 2023

Sustainability

View full text Add to dashboard Cite

show abstract

“…They benefit from several advantages, such as quiet operation, regenerative braking, and zero pollutant emissions while driving. However, EVs, PHEVs, and HEVs still suffer from charging times and driving range [9,10]. Several studies are exploring ways to meet the increasing electricity demand in terms of green production for charging electric vehicles, with initiatives such as photovoltaic parking lots or wind turbines gaining attention [11,12].…”

Section: Introductionmentioning

confidence: 99%

Influence of Wide-Bandgap Semiconductors in Interleaved Converters Sizing for a Fuel-Cell Power Architecture

Mercier,

Azib,

Ceschia

et al. 2024

WEVJ

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This study presents a decision-support methodology to design and optimize modular Boost converters in the context of fuel-cell electric vehicles. It involves the utilization of interleaved techniques to reduce fuel-cell current ripple, enhance system efficiency, tackle issues related to weight and size concerns, and offer better flexibility and modularity within the converter. The methodology incorporates emerging technologies by wide-bandgap semiconductors, providing better efficiency and higher temperature tolerance. It employs a multiphysical approach, considering electrical, thermal, and efficiency constraints to achieve an optimal power architecture for FCHEVs. Results demonstrate the advantages of wide-bandgap semiconductor utilization in terms of volume reduction and efficiency enhancements for different power levels. Results from one of the considered power levels highlight the feasibility of certain architectures through the utilization of WBG devices. These architectures reveal improvements in both efficiency and volume reduction as a result of incorporating WBG devices. Additionally, the analysis presents a comparison of manufacturing cost between standard and wide-bandgap semiconductors to demonstrate the market penetration potential.

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“…The main goal is to contribute to the ongoing research discussion on future charging strategies of EVs. While there are many different types of charging strategies [3], this study is focused on cable charging (i.e., conductive charging), and it does not include an analysis of, e.g., wireless charging or battery swapping. While many previous studies focus on a larger international perspective on V2G, this study focuses on the modeling of V2G for the charging and discharging of new EVs to the Swedish electricity market as there has been a significant variation in electricity prices for the Swedish market recently, a strong interest in renewable energy sources (RES), as well as an ongoing trend toward introducing more EVs and implementing national charging infrastructure.…”

Section: Introductionmentioning

confidence: 99%

An Analysis of Vehicle-to-Grid in Sweden Using MATLAB/Simulink

Leijon,

Santos Döhler,

Hjalmarsson

et al. 2024

WEVJ

Self Cite

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With more electric vehicles introduced in society, there is a need for the further implementation of charging infrastructure. Innovation in electromobility may result in new charging and discharging strategies, including concepts such as smart charging and vehicle-to-grid. This article provides an overview of vehicle charging and discharging innovations with a cable connection. A MATLAB/Simulink model is developed to show the difference between an electric vehicle with and without the vehicle-to-grid capabilities for electricity grid prices estimated for Sweden for three different electric vehicle user profiles and four different electric vehicle models. The result includes the state-of-charge values and price estimations for the different vehicles charged with or without a bidirectional power flow to and from the electric grid. The results show that there is a greater difference in state-of-charge values over the day investigated for the electric vehicles with vehicle-to-grid capabilities than for vehicles without vehicle-to-grid capabilities. The results indicate potential economic revenues from using vehicle-to-grid if there is a significant variation in electricity prices during different hours. Therefore, the vehicle owner can potentially receive money from selling electricity to the grid while also supporting the electric grid. The study provides insights into utilizing vehicle-to-grid in society and taking steps towards its implementation.

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Charging Electric Vehicles Today and in the Future

Cited by 40 publications

References 97 publications

Research on Appearance Detection, Sorting, and Regrouping Technology of Retired Batteries for Electric Vehicles

Research on Appearance Detection, Sorting, and Regrouping Technology of Retired Batteries for Electric Vehicles

Influence of Wide-Bandgap Semiconductors in Interleaved Converters Sizing for a Fuel-Cell Power Architecture

An Analysis of Vehicle-to-Grid in Sweden Using MATLAB/Simulink

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