scholarly journals Impact of the Air-Conditioning System on the Power Consumption of an Electric Vehicle Powered by Lithium-Ion Battery

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Brahim Mebarki ◽  
Belkacem Draoui ◽  
Boumediène Allaou ◽  
Lakhdar Rahmani ◽  
Elhadj Benachour
Keyword(s):  
Lithium Ion Battery ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Air Conditioning ◽  
Storage Capacity ◽  
Lithium Ion ◽  
Noise Pollution ◽  
Air Conditioning System ◽  
Energy Storage Capacity ◽  
Basic Goal

The car occupies the daily universe of our society; however, noise pollution, global warming gas emissions, and increased fuel consumption are constantly increasing. The electric vehicle is one of the recommended solutions by the raison of its zero emission. Heating and air-conditioning (HVAC) system is a part of the power system of the vehicle when the purpose is to provide complete thermal comfort for its occupants, however it requires far more energy than any other car accessory. Electric vehicles have a low-energy storage capacity, and HVAC may consume a substantial amount of the total energy stored, considerably reducing the vehicle range, which is one of the most important parameters for EV acceptability. The basic goal of this paper is to simulate the air-conditioning system impact on the power energy source of an electric vehicle powered by a lithium-ion battery.

THE PERFORMANCE OF CONDENSER UNDER DIFFERENT VEHICLE SPEEDS

2013 ◽  
Vol 21 (02) ◽  
pp. 1350013 ◽  
Author(s):  
CHIH-CHIU SHEN ◽  
JAU-HUAI LU
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Air Conditioning ◽  
High Efficiency ◽  
Cooling Capacity ◽  
Vehicle Speed ◽  
Air Conditioner ◽  
Electric Motors ◽  
No Emission ◽  
Air Conditioning System

Due to the concern in energy shortage and environmental protection, electric vehicle is considered to be a substitute for the conventional gasoline-powered vehicles due to its characteristics of high efficiency and no emission. However, the load of air conditioning causes a serious problem for electric vehicles, especially in tropical and subtropical areas. The compressor of conventional air conditioning system is driven by engine and its speed is thus coupled to vehicle speed. In electric vehicles, the compressor is driven by electric motors and compressor speed could be decoupled to vehicle speed. This mechanism provides an opportunity to improve the energy efficiency of electric vehicle since the operation of air conditioning system may be independent of vehicle speed. The purpose of this paper is to find out the electric fan operation model as vehicle speed is varied. This paper was to establish a theoretical model for the condenser of automotive air conditioner and to conduct simulation to evaluate the effect of vehicle speed on the cooling capacity and sub-cooling of condenser. Results of simulation demonstrated that vehicle with 6 km h-1 speed has the 5°C of sub-cooling at 0.0266 kg s-1 of refrigerant flow rate and the cooling capacity was 4.93 kW. In this study, an increase of 16.6% in cooling capacity can be reached as the speed of vehicle was raised from 6 to 110 km h-1 and can promote the sub-cooling to 19.5°C. It was also found that the cooling capacity of air conditioner is extremely sensitive to vehicle speed while the vehicle is running at low speed. Furthermore, increases in the vehicle speed resulted in reduction of the length of superheat region from 17.5 to 8.5 cm. Finally, a correlation among these variables and the simulated cooling capacity was obtained in this study, enabling the relevant researchers to evaluate automotive air conditioner performance under different vehicle speeds more easily.

Aspects of Modeling and Optimizing Air Circulation Currents in a Car Cabin

2014 ◽  
Vol 659 ◽  
pp. 163-170
Author(s):  
Vasile Caunii ◽  
Adrian Sachelarie
Keyword(s):  
Thermal Comfort ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Fuel Economy ◽  
Air Conditioning ◽  
Hybrid Electric Vehicles ◽  
Air Conditioning System ◽  
Main Components ◽  
High Level ◽  
Air Circulation

Air conditioning system is one of the main components of modern cars, which defines the level of comfort, its performances directly affecting the car performances. In order to have a car with high level of thermal comfort, the air-conditioning system must be efficient in terms of energy, it has to perform many functions regarding the microclimate control (control of temperature, humidity, filtration), and in addition must fulfill safety and security functions in circulation (demisting and defrosting). Also vehicle air-conditioning system can significantly influence fuel economy and tailpipe emissions of conventional and hybrid electric vehicles (HEV) and reduce electric vehicle (EV) range.

Recent Advances on the Electric Vehicle Heat Pump Air Conditioning Systems

2021 ◽  
Vol 14 ◽  
Author(s):  
Bin Peng ◽  
Yubo Zhang ◽  
Pengcheng Zhang ◽  
Hanif Ullah
Keyword(s):  
Electric Vehicle ◽  
Heat Pump ◽  
Electric Vehicles ◽  
Air Conditioning ◽  
New Technology ◽  
Research Work ◽  
High Energy ◽  
Air Conditioning System ◽  
Electrical Vehicle ◽  
Recent Developments

Background: Heat pump air conditioning technology has broad application prospects and high market value in the field of electric automobiles owing to its increasing performance and energy saving. Pure electric vehicles require high-energy consumption at low temperatures, which seriously affects the popularity of electric vehicles with a heat pump air conditioning system. Objective: The aim of this research is to describe the recent developments in the study of the heat pump air conditioning system for electric vehicles. Methods: This paper summarizes the research work of scholars published worldwide based on the electric vehicle heat pump air conditioning system, premised on lately published patents and journal articles. Starting from the components of the air conditioning system, focus on the research results and development trends that have been achieved in this field. Results: The new technology path and pattern of the electrical vehicle heat pump air conditioning system provide methods and suggestions for future growth, put forward by the current development situation. Conclusion: The latest progress of the electric vehicle heat pump air conditioning system has been summarized and prospected. There are still some problems and technical bottlenecks in heat pump air conditioning system. It is of great significance to improve the environmental adaptability of electric vehicles and optimize the reasonable heat pump air conditioning system for the endurance of electric vehicles.

scholarly journals An electric circuit model for a lithium-ion battery cell based on automotive drive cycles measurements

2021 ◽  
Vol 11 (4) ◽  
pp. 2798
Author(s):  
Jaouad Khalfi ◽  
Najib Boumaaz ◽  
Abdallah Soulmani ◽  
El Mehdi Laadissi
Keyword(s):  
Lithium Ion Battery ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Measurement Data ◽  
Lithium Ion ◽  
Electrical Circuit ◽  
Performance Criteria ◽  
Battery Management System ◽  
Battery Cell ◽  
Driving Cycles

The on-board energy storage system plays a key role in electric vehicles since it directly affects their performance and autonomy. The lithium-ion battery offers satisfactory characteristics that make electric vehicles competitive with conventional ones. This article focuses on modeling and estimating the parameters of the lithium-ion battery cell when used in different electric vehicle drive cycles and styles. The model consists of an equivalent electrical circuit based on a second-order Thevenin model. To identify the parameters of the model, two algorithms were tested: Trust-Region-Reflective and Levenberg-Marquardt. To account for the dynamic behavior of the battery cell in an electric vehicle, this identification is based on measurement data that represents the actual use of the battery in different conditions and driving styles. Finally, the model is validated by comparing simulation results to measurements using the mean square error (MSE) as model performance criteria for the driving cycles (UDDS, LA-92, US06, neural network (NN), and HWFET). The results demonstrate interesting performance mostly for the driving cycles (UDDS and LA-92). This confirms that the model developed is the best solution to be integrated in a battery management system of an electric vehicle.

scholarly journals Interactive test stand for electric vehicle components

2019 ◽  
Vol 20 (1-2) ◽  
pp. 93-98
Author(s):  
Arkadiusz Małek ◽  
Tomasz Łusiak
Keyword(s):  
Energy Storage ◽  
Lithium Ion Battery ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Lithium Ion ◽  
Test Stand ◽  
Research And Teaching ◽  
Vehicle Components ◽  
The Individual

The article discusses an interactive stand for testing the components of electric vehicles. They can also be used in the didactics of technical subjects such as vehicle construction and vehicle diagnostics with a focus on hybrid or full electric vehicles. The article discusses the individual components of the research stand and presents examples of their use in research and teaching. Particular attention was paid to the components responsible for energy storage on-board the vehicle and the charging process of the lithium-ion battery.

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