2010 June - 28 articles
Battery cost and battery capacity are key factors to determine whether or not electric vehicles would be used widely. Having a high energy density, lithium-ion battery can improve the mileage range of electric vehicles, yet the battery cost remains h...
Ultracapacitors are potentially promising power-augmentation devices in hybrid powertrains. A commercial ultracapacitor module was characterized under standard procedures to assess its performance. Tests were carried out on a platform, with which amb...
This paper proposes a smart lithium-ion battery capacity estimation method for electric bicycles. Battery capacity information informs the electric vehicle driver of the residual battery working time, thus facilitating the estimation of mileage of el...
A low cost battery charger is introduced in this paper. The charging feature meets the requirement of a Li-Ion rechargeable cell designed for electric vehicles and manufactured by E company. The charger is capable of constant current/constant voltage...
This paper describes research into the definition of experimental protocols, and the development of a numerical model of a battery, associated with a parameterization assistant tool in order to follow battery ageing. This work was carried out as part...
The electrochemical performance of LiFePO4/C cathode in a carbonate-based electrolyte (1.0M LiPF6/EC-DMC-PC-FEC) was tested in coin type cells at low temperatures. The discharge capacities of the LiFePO4/C cathode were about 161.6mAh/g (20℃), 141.4mA...
This article presents how active charge balancing of energy storage devices such as batteries and supercaps can be improved by using the capacity and the state of charge instead of the cell voltage as balancing criterion. Both for charging and discha...
Non-intrusive methods of establishing battery state offer distinct advantages to systems where complex charge and discharge profiles make implementation of conventional battery state reporting difficult. Furthermore, examination of equivalent circuit...
The aim of the present paper is to share our experience in battery safety testing and risk analysis from a recent project called BLIXT, which had the objective to speed up the progress of the paradigmatic shift toward electric vehicles (EV). The batt...
Almost all HEV battery control strategies keep the battery state of charge (SOC) within a lower limit (SOCmin) (these strategies also called charge sustaining strategies). The goal from sustaining the SOC in this way is to prolong the battery life. B...
LiFePO4 is considered as a practical cathode material because of low raw materials’ cost, excellent thermal safety, environmental friendliness, and long operational life, despite obstacles such as low tap density, low electric conductivity and slow l...
25 June 2010
Safety control and protection strategy of high-voltage system of electric vehicles include analysis of circuit condition before connection to high voltage terminal, transient current prevention for capacitive load, real-time monitoring and analysis o...
In order to reduce the carbon emission, saving fuel energy and for the convenience of personal transportation in urban area, a two-wheel-driven self-balancing vehicle was developed, which utilize the well-known inverted pendulum control technique, ca...
Determinant factors of time interval for sending reference message in Time Triggered Controller Area Network, called TTCAN below, was analyzed. A software method for fault diagnosis and tolerance of time master was also proposed and the method was va...
This paper presents a methodology dedicated to component sizing and fuel consumption evaluation of different degree of hybridization for light duty vehicles applications. The methodology will be described together with vehicle and components simulati...
Accurate estimation of battery State of Charge (SOC) is essential for battery control and effective energy management of Hybrid Electric Vehicles (HEV). Taking the dynamic hysteresis characteristic of battery into account, an equivalent circuit model...
Traditional mobility mostly relies on fossil fuels (e.g. the oil), but they will run out. Before the arrival of the depletion, we must get rid of our mobility dependence on the oil and prepare ourselves well for the advent of that day. Globally under...
In order to lighten abrasion of braking system of hybrid electric tracked vehicle, according to characteristic of hybrid electric transmission, electric-mechanical composite braking method was proposed. By means of analyzing performance of electric b...
This work implements a smart boost converter to enable an electric bicycle to be powered by a battery/supercapacitor hybrid combination. A 36V, 250W front hub motor was retrofitted onto a normal geared bike powered by a 36V; 12Ah lithium ion phosphat...
The paper proposes a fault processing strategy based on classification principle. Detail the realization of the strategy for a fuel cell vehicle which is developed by Tongji University and shanghai fuel cell vehicle powertrain Co., Ltd. Emphasis on t...
In this study, a double-wheel self balanced unicycle is proposed. Because of the shortage of energy resource and parking space in city, the idea of this light-weight electrical aid personal unicycle can hopefully be used in future transportation syst...
In recent years, the research of Battery Electric Vehicle (BEV) focuses on energy storage systems, drive system and control strategy. However, one of the important subjects to enhance the performance of BEV is to research the parameters of transmissi...
This paper describes the results from Annex XII “Heavy-duty hybrid vehicles” of the International Energy Agency (IEA) Implementing Agreement on “Hybrid and Electric Vehicles” (IA-HEV). Since 1993, this Implementing Agreement has provided a platform t...
Electric vehicle is considered to be the solution for energy crisis and environment pollution in individual transportation. However, electric vehicles are still not competitive with conventional vehicles limited by the driving range with the state-of...
A 288V/8Ah manganese type Li-ion battery system for hybrid electric vehicle was developed. The performances of single-cell and battery system were tested. For the single-cell, the discharge power and regen power are more than 312.5W and 250W at 45-85...
The sulfur-containing PAN composite cathode materials for lithium/sulfur batteries were prepared by suspension polymerization method and electrochemical properties of lithium/sulfur cells were investigated. The sulfur composite cathode was characteri...
The widespread introduction of electrically-propelled vehicles is currently part of many political strategies and introduction plans. These new vehicles, ranging from limited (mild) hybrid to plug-in hybrid to fully-battery powered, will rely on a ne...
There have been a number of recent reports of the current and projected costs of advanced batteries for electric, hybrid, and plug-in hybrid electric vehicles (PHEVs). These studies have focused on lithium-ion batteries as the most attractive option...
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