Articles tagged with Electric Vehicles
A recent study shows that electric vehicle manufacturers can reduce their material demands by nearly 15% by adopting a circular manufacturing system decision-making model. This approach enables product design that facilitates eventual remanufacture and reuse, or recycling, resulting in production cost savings of 18.6% and overall carbo...
Recent advancements in compensation circuits have achieved impressive results in addressing key inefficiencies in wireless EV charging. Researchers refined converter topologies to deliver high-power, high-efficiency charging without physical connectors, demonstrating improved power transfer.
Researchers developed circular coils with ferrite boxes to enhance wireless power transfer efficiency for electric vehicles. The design achieved a 50% increase in coupling efficiency and a 300% boost in EMF strength.
Researchers present an intelligent solution to manage complex energy systems, improving frequency stability and reducing settling time by up to 283% compared to traditional controllers. The innovative FO-Fuzzy PSS controller incorporates a specialized washout filter, ensuring smooth operation even during turbulent conditions.
Fraunhofer IAF presents a bidirectional 1200 V GaN switch with integrated free-wheeling diodes, enabling more efficient power electronics for energy generation and mobility. The switch can be used in grid-connected power converters and electric drive systems.
A new study explores the future of EV ultrafast charging stations in China, finding that increased power capacity does not necessarily double station loads. The researchers propose two generalized solutions: energy storage and dynamic waiting strategies, which can effectively decrease peak loads and satisfy surging demands.
Researchers developed a novel anode material combining hard carbon with tin, enhancing energy storage and stability. The composite structure shows excellent performance in lithium-ion and sodium-ion batteries, promising applications in electric vehicles and grid-scale energy storage.
Researchers analyzed driving behavior data from Chinese electric vehicle drivers and found that rapid acceleration significantly impacts energy efficiency. The study provides actionable guidance for EV owners to improve their eco-driving behaviors and offers insights into developing personalized feedback systems.
A study by University of Auckland researchers found that electric vehicle (EV) adoption is linked to increased carbon dioxide emissions unless countries clean up their electricity grids. Only when renewable energy sources account for approximately 48% of global electricity generation will EVs contribute to reducing CO₂ emissions.
Researchers at University of Sheffield find socioeconomic inequalities persist in low-carbon technology adoption, particularly among disadvantaged groups. The report advocates for targeted interventions and community-level support to level the playing field.
A comprehensive study examined vehicle-mounted wireless power transfer systems to ensure user safety during electric vehicle charging. The research revealed key considerations for designers: optimizing field distribution patterns, mitigating misalignment effects, and shielding high-frequency cables.
Researchers developed a novel approach to visualize and analyze driving behaviors in electric vehicles, revealing the impact of driving patterns on energy consumption. Key findings show that rapid acceleration is a primary cause of excessive energy consumption, which can be mitigated by adopting eco-driving behaviors.
The US power system lacks capacity to handle rising demand, meeting participants agreed. Six big ideas for federal and state energy policymakers consider expanding the grid, optimizing current capabilities, and controlling costs and system reliability.
Researchers at the University of Michigan have developed a modified manufacturing process that enables high ranges and fast charging in cold weather. A stabilizing coating on an electrode, combined with microscale channels, solves the trade-off between range and charging speed, even in subfreezing temperatures.
A recent study identified a quasi-conversion reaction on the cathode surface during discharging, leading to accelerated battery degradation. High nickel content exacerbates this effect.
The study combines LoRa with distributed machine learning to optimize network connectivity for efficient transportation systems. It improves network efficiency and reliability by employing innovative spreading factor models and K-means algorithms.
The study reveals that riders who deliberately crash or cause dangerous situations when riding are a significant concern. The researchers also found that one-handed steering and group riding increase the risk of crashing by six times and almost triples it respectively.
Researchers have developed a new sensor to detect hazardous gas leaks in lithium-ion batteries, which could prevent catastrophic failures and enhance the reliability of battery-powered technologies. The sensor detects trace amounts of ethylene carbonate vapour, targeting potential battery failures before they escalate into disasters.
Researchers developed a novel approach to address thermal challenges in electric vehicle charging using a gallium-based liquid metal flexible charging connector. The LMFCC demonstrated excellent flexibility, high transmission stability, and efficient heat dissipation.
Researchers developed a 'nano-spring coating' technology to increase the lifespan and energy density of EV batteries. The technology, featuring multi-walled carbon nanotubes, absorbs strain energy generated from charging and discharging, preventing cracks and improving stability.
Researchers at the University of Texas at Austin and Argonne National Laboratory have developed a comprehensive analysis of thermal stability in high-nickel cathode materials. The team discovered that each material has a critical state of charge defining its safe operating limit, which influences metal-oxygen bonds and surface reactivity.
Interest in second-hand electric vehicles (EVs) has doubled from 3.5% to 7% of advert views between 2022 and 2023, indicating a potential tipping point in the UK used car market. This growth is driven by 'sticky' interest that lasts longer, suggesting drivers are becoming more receptive to EVs.
Researchers have developed novel membranes that can pull lithium directly out of salt-lake brines using electricity, leaving other metal ions behind. The process could reduce the environmental impact of lithium mining and contribute to more efficient energy storage systems for renewable energy sources.
LearningEMS provides a unified platform for various EV configurations, supporting detailed comparisons of multiple algorithms and benchmarks. The study highlights the strengths and weaknesses of different approaches, emphasizing the importance of state, reward, and action settings in RL-based EMS optimization.
Researchers compare Tesla's 4680 cell and BYD's Blade cell, highlighting differences in energy density, volume efficiency, and thermal management. The study provides a benchmark for large-format cell designs, serving as a baseline for further analysis and optimization.
The UK's top earners contribute disproportionately to carbon emissions, yet they can drive systemic change through their purchasing power and influence. Wealthy individuals are more likely to adopt green technologies, but their lifestyles remain high-emission due to frequent flying and luxury consumption.
A new study from the University of Surrey found that positive hands-on experiences with EVs significantly boost purchase intentions, while negative experiences can deter potential buyers. The researchers advocate for increased investment in public test-driving events and educational campaigns to address consumer adoption.
Researchers from Rice University have developed an efficient lithium extraction method using solid-state electrolyte membranes, which can separate lithium from water and other ions with near-perfect selectivity. This breakthrough could make the production of EV batteries more sustainable by reducing reliance on traditional mining methods.
University of Missouri researchers developed a solution to improve solid-state battery performance by understanding the root cause of issues. They used 4D STEM to examine atomic structures without disassembling batteries, ultimately determining the interphase layer was the culprit.
Researchers developed heteroepitaxial diamond quantum sensors with high sensitivity and accuracy for monitoring electric vehicle battery systems. The breakthrough could pave the way for widespread adoption in industries related to sustainable development.
A recent study led by Qian found that income, rather than proximity, is the dominant factor in determining who benefits most from public EV infrastructure. Wealthier individuals have more flexibility to spend time at charging stations while charging their vehicles, whereas lower-income communities struggle to integrate public charging ...
Researchers propose a new local electricity market to harness the power of homeowners' grid-edge devices in case of outages or attacks. Devices like solar panels and electric vehicles can pump power into the grid or rebalance consumption.
Researchers found that applying external pressures can alleviate Li loss and battery degradation by alleviating SEI aggregation. Pressure regulation can rejuvenate I-iLi, reducing its content and Li loss. The study suggests a promising approach for advancing practical Li metal batteries.
A new study by the University of Southampton has found that brake pad emissions can be more toxic than diesel exhaust, particularly due to high copper content. The research highlights the need for policy changes to mitigate the health effects of vehicle particulate matter, as electric vehicles are not emission-free.
A study by Virginia Tech researchers found that electric vehicles generally produce less non-exhaust emissions than gasoline-powered vehicles when driving in city conditions. The research also highlights the environmental benefits of regenerative braking, which reduces brake abrasion emissions.
Researchers at the University of Texas at El Paso developed a novel method to measure load demand on the electrical grid for electric vehicles charging while in motion. The model, called modified Toeplitz convolution or mCONV, accounts for varying vehicle sizes, road lengths, and traffic flow.
A new study highlights the need for collaboration among recyclers, manufacturers, and policymakers to develop efficient and sustainable lithium-ion battery recycling processes. Advanced techniques like direct recycling and upcycling could reduce costs by up to 40% while minimizing secondary pollution.
The TU Graz AI system optimises vehicle components using simulation models and evolutionary algorithms to reduce development time by several months. It considers multiple objectives including production costs, efficiency and package space requirements, as well as CO2 emissions across the entire supply chain.
A new study finds that battery-powered electric vehicles (BEVs) have improved significantly in reliability over the years, matching the lifespans of traditional cars and vans with internal combustion engines. BEVs now have an average lifespan of 18.4 years and can travel up to 124,000 miles.
The article reveals that larger EVs are weighing more than conventional cars and require greater critical minerals to produce, delaying efforts to decarbonize the electricity grid. The growing size of EVs is also making waste processing and recycling hazardous
The University of Texas at Arlington is developing more efficient processes for sourcing rare earth elements needed to produce high-performance magnets. The project aims to make the mining of these critical materials more environmentally sustainable and cost-effective.
Despite potential advantages, sodium-ion batteries struggle to match lithium-ion batteries in terms of energy density and cost. Researchers identify key areas for improvement, including increasing energy densities without critical minerals and developing new battery chemistries.
A POSTECH research team developed a groundbreaking strategy to enhance LLO material durability, extending battery lifespan by up to 84.3% after 700 cycles. The breakthrough addresses capacity fading and voltage decay issues.
Researchers warn that refining nickel, cobalt, and other minerals for electric vehicle batteries could increase sulfur dioxide emissions by up to 20% in China and India. The study highlights the need for countries to think strategically about building clean supply chains as they develop decarbonization plans.
Researchers analyzed real-time data from over 50,000 public EV charging stations to understand demand and peak times. The study found high demand during working hours in California and identified potential inequities in access to EV charging facilities across diverse communities.
Researchers found that dynamic discharging based on real driving data helped extend battery life, with sharp accelerations slowing degradation. The study suggests a correlation between acceleration and slower aging, contrary to previous assumptions.
A new study introduces a novel algorithm that utilizes Random Forest to estimate State of Charge (SOC) in Electric Vehicles (EVs), achieving superior accuracy and robustness. The RF model outperforms traditional methods, including Extreme Learning Machine, and holds promise for enhancing EV efficiency and reliability.
Researchers uncover the effects of calendering on silicon-based composite electrodes, revealing increased deformation and cracking with higher calendering levels. This study offers valuable insights for optimizing electrode design and improving battery safety.
Researchers will test the hypothesis that environmental manganese exposure is associated with the progression of Parkinson's symptoms and measure neuroinflammation in the brain using MRI scans. The study aims to inform environmental regulations for manganese worldwide and address an environmental justice concern.
A novel data-fusion-model method accurately estimates the state of health (SOH) of Li-ion battery packs based on partial charging curve. The proposed method capitalizes on charging data to track degradation trends, achieving accurate SOH estimation with maximum errors less than 1.5%.
A $50 million consortium, led by Virginia Tech, aims to develop high-energy, long-lasting sodium-ion batteries using abundant and inexpensive materials. The initiative seeks to reduce US dependence on critical elements in lithium-ion batteries, paving the way for a more sustainable future in electric-vehicle technology.
The study reviews current research trends and future advancements in electric vehicle battery technology, highlighting the performance, safety, and environmental impact of various battery types. Innovative management techniques and cost-effective solutions are crucial to support the growth of electric mobility.
An international team of scientists identified a surprising factor accelerating lithium-ion battery degradation, leading to reduced charge and potential failure in critical situations. Strategies to reduce self-discharge may include electrolyte additives and cathode coatings to improve battery lifespan.
Researchers at Rice University have developed a novel three-chamber electrochemical reactor that improves the selectivity and efficiency of lithium extraction from geothermal brines. The reactor achieves high lithium purity rates and minimizes by-product formation, offering a promising approach to address growing demand for lithium in ...
Larry Seiber, an R&D staff member at Oak Ridge National Laboratory, has achieved senior member status in the Institute of Electrical and Electronics Engineers. He has conducted extensive research in power electronics and electric machinery, resulting in multiple patents and notable awards.
A novel capacitorless solid-state power filter (SSPF) has been developed for single-phase DC-AC converters, eliminating the need for LC filters and dc-link capacitors. The proposed concept demonstrates a significant reduction in critical components, leading to enhanced efficiency and reliability.
The paper reviews thermal design of SiC power modules for motor drives in electric vehicles, focusing on optimizing irregular Pinfin structures and collaborative design with DC bus capacitors and motors. Irregular Pinfin arrangements can enhance heat transfer efficiency and reduce pressure drops compared to regular layouts.
A Cornell University research team found that strategically placing a mix of medium-speed and fast-charging stations in urban areas increases driver usage and improves investor profitability by 50-100%. The team used Bayesian optimization to analyze data from Atlanta, taking into account factors like traffic and road characteristics.
The Department of Energy awarded nearly $1 million to researchers at the University of Arkansas to develop a prototype for high-voltage power modules that can handle higher voltages and temperatures. The goal is to create smaller, more efficient, and more reliable fast-charging stations for electric vehicles.
KAIST researchers developed a new electrochemical impedance spectroscopy (EIS) technology using small currents to diagnose electric vehicle batteries with high precision. This low-current EIS system minimizes thermal effects and safety issues during measurement, making it suitable for integration into vehicles.