scholarly journals Analysis and Improvement Measures of Driving Range Attenuation of Electric Vehicles in Winter

2021 ◽  
Vol 12 (4) ◽  
pp. 239
Author(s):  
Shuoyuan Mao ◽  
Meilin Han ◽  
Xuebing Han ◽  
Jie Shao ◽  
Yong Lu ◽  
...  
Keyword(s):  
Energy Loss ◽  
Electric Vehicles ◽  
Flow Diagram ◽  
Coupling Mechanism ◽  
Vehicle Dynamic ◽  
Improvement Measures ◽  
Driving Range ◽  
Driving Conditions ◽  
Ev Model ◽  
Battery Energy

A great many EVs in cold areas suffer from range attenuation in winter, which causes driver anxiety concerning the driving range, representing a hot topic. Many researchers have analyzed the reasons for range attenuation but the coupling mechanism of the battery as well as the vehicle and driving conditions have not been clearly estimated. To quantitatively investigate the driving range attenuation of electric vehicles (EVs) during winter, an EV model mainly integrated with a passenger-cabin thermal model, battery model, and vehicle dynamic model was constructed and simulated based on the mass-produced Wuling HongGuang Mini EV. Real vehicle dynamic driving data was used to validate the model. Based on NEDC driving conditions, the driving range calculation formula and energy flow diagram analysis method were used. The reason for attenuation was evaluated quantitatively. Results show that battery energy loss and breaking recovery energy loss contribute nearly half of the range attenuation, which may be alleviated by battery preheating. Suggestions for extending driving range are proposed based on the research.

scholarly journals A Review on Electric Vehicles: Technologies and Challenges

Smart Cities ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 372-404
Author(s):  
Julio A. Sanguesa ◽  
Vicente Torres-Sanz ◽  
Piedad Garrido ◽  
Francisco J. Martinez ◽  
Johann M. Marquez-Barja
Keyword(s):  
Electric Vehicles ◽  
Lithium Ion ◽  
Future Prospects ◽  
Academic Communities ◽  
Market Situation ◽  
Battery Technology ◽  
Battery Energy ◽  
New Research ◽  
Near Future ◽  
Technology Trends

Electric Vehicles (EVs) are gaining momentum due to several factors, including the price reduction as well as the climate and environmental awareness. This paper reviews the advances of EVs regarding battery technology trends, charging methods, as well as new research challenges and open opportunities. More specifically, an analysis of the worldwide market situation of EVs and their future prospects is carried out. Given that one of the fundamental aspects in EVs is the battery, the paper presents a thorough review of the battery technologies—from the Lead-acid batteries to the Lithium-ion. Moreover, we review the different standards that are available for EVs charging process, as well as the power control and battery energy management proposals. Finally, we conclude our work by presenting our vision about what is expected in the near future within this field, as well as the research aspects that are still open for both industry and academic communities.

Transfer Function Prediction of a Lithium Iron Phosphate Battery with Nature-Inspired Approach

2015 ◽  
Vol 1115 ◽  
pp. 531-534
Author(s):  
Siti Fauziah Toha
Keyword(s):  
Transfer Function ◽  
Electric Vehicles ◽  
Cross Correlation ◽  
Lithium Iron Phosphate ◽  
Iron Phosphate ◽  
Battery Lifetime ◽  
Battery Model ◽  
Full Capacity ◽  
Driving Range ◽  
Optimisation Technique

It is well known that the main constraint of electric vehicles (EVs) is the capabilities to supply efficient energy for driving-range that is comparable to petrol fueled vehicles. Moreover, a large number of batteries needed for EV contribute to heavy weight, poor durability and pricy total cost. In view of that, the need to prolong the battery lifetime, and use its full capacity, is of utmost importance. Therefore, an accurate battery model is a challenging first step to the overall problem soving chain. This paper presents a transfer function model prediction with nature-inspired approach for a Lithium iron phosphate battery. An Ant Colony Optimisation technique is used in search for accurate model with robust capability to adapt with different input current based on the New European Driving Cycle (NEDC) range. The model is further validated with autocorrelation and cross-correlation test and it is proven to give an error tolerance between the 95% confidence limit.

scholarly journals Capabilities of Nearly Zero Energy Building (nZEB) Electricity Generation to Charge Electric Vehicle (EV) Operating in Real Driving Conditions (RDC)

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7591
Author(s):  
Wojciech Cieslik ◽  
Filip Szwajca ◽  
Jedrzej Zawartowski ◽  
Katarzyna Pietrzak ◽  
Slawomir Rosolski ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Renewable Energy Sources ◽  
Energy Transition ◽  
Target Range ◽  
Zero Energy ◽  
Zero Energy Building ◽  
Driving Conditions ◽  
Almost All

The growing number of electric vehicles in recent years is observable in almost all countries. The country’s energy transition should accompany this rise in electromobility if it is currently generated from non-renewable sources. Only electric vehicles powered by renewable energy sources can be considered zero-emission. Therefore, it is essential to conduct interdisciplinary research on the feasibility of combining energy recovery/generation structures and testing the energy consumption of electric vehicles under real driving conditions. This work presents a comprehensive approach for evaluating the energy consumption of a modern public building–electric vehicle system within a specific location. The original methodology developed includes surveys that demonstrate the required mobility range to be provided to occupants of the building under consideration. In the next step, an energy balance was performed for a novel near-zero energy building equipped with a 199.8 kWp photovoltaic installation, the energy from which can be used to charge an electric vehicle. The analysis considered the variation in vehicle energy consumption by season (winter/summer), the actual charging profile of the vehicle, and the parking periods required to achieve the target range for the user.

Issues in Energy Storage for Electric-Based Transportation

MRS Bulletin ◽  
2002 ◽  
Vol 27 (8) ◽  
pp. 628-631 ◽  
Author(s):  
Gholam-Abbas Nazri
Keyword(s):  
Energy Storage ◽  
Electric Vehicles ◽  
Lithium Batteries ◽  
Storage Device ◽  
Energy Storage Device ◽  
Rechargeable Lithium Batteries ◽  
Propulsion Systems ◽  
On Demand ◽  
Vehicle Acceleration ◽  
Driving Range

AbstractThe key to market success for electric vehicles (EVs) has always been the energy-storage device, which limits driving range and vehicle acceleration. In many respects, rechargeable lithium batteries are the most attractive technology for storing energy and delivering it on demand in an automobile. Past and ongoing efforts to develop electric-based automotive propulsion systems are chronicled in this article.

Research on Automatic Replacing Technology of Power Battery Pack

2011 ◽  
Vol 308-310 ◽  
pp. 217-223 ◽  
Author(s):  
Zhen Po Wang ◽  
Hai Bin Han ◽  
Lu Zeng
Keyword(s):  
Electric Vehicles ◽  
Concrete Structure ◽  
Battery Pack ◽  
Charging Time ◽  
Power Battery ◽  
Replacement Process ◽  
Hydraulic Servo ◽  
Driving Range ◽  
Key Techniques ◽  
The Way

The short driving range and long charging time are two big problems for electric vehicles. A concept of battery pack automatic replacement is put forward in this paper to solve these problems, and a deep research on the key techniques is contained. This paper introduced the way of positioning and locking in replacement process, including the concrete structure of both replacing equipment and battery pack. For reliability problems of the connectors, two schemes are designed. Elastic jacks and coil are adopted to guarantee the reliability and automatically centering. On this basis, battery fast replacing system is designed, which controlled by PLC, driven by electro-hydraulic servo. This was proved to be a big success in practice.

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