Electrical Batteries
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Mathematical Modeling and Parameter Estimation of Battery Lifetime using a Combined Electrical Model and a Genetic Algorithm
RESUMO Neste artigo é proposta uma metodologia baseada na meta-heurística Algoritmo Genético para estimar os parâmetros no modelo Chen e Rincón-Mora, sendo este aplicado na modelagem matemática do tempo de vida de baterias de Lítio-íon Polímero. O modelo também é parametrizado a partir da metodologia convencional, que necessita de dados obtidos po
TEMA (São Carlos). Publicado em: 06/06/2019
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2. Computational Model for Microgeneration Simulation, From Solar and Wind Renewable Sources, With Optimal Allocation of Loads, Electric Vehicle and Energy Storage, In a Residential Electrical Micro Network
Abstract The electrical sector is under constant evolution. One of the areas refers to the consumers that come to be generators, implementing distributed generation, interconnected to a smart grid. This article discusses the improvement of an algorithm, already presented in the literature, to make the best temporal allocation of loads, electric vehicle, stor
Braz. arch. biol. technol.. Publicado em: 29/10/2018
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3. Environmental advantages of the reverse logistics: a case study in the batteries collection in Brazil
Abstract Paper aims Evaluate the environmental advantages of the Reverse Logistics of Portable Batteries carried out by the Brazilian Electrical and Electronics Industry Association (ABINEE). Originality The adoption of reverse logistics of batteries contributed with the minimization of environmental impact and stimulated the manufacturers of electronics
Prod.. Publicado em: 02/07/2018
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4. Comparison of the Incident Solar Energy and Battery Storage in a 3U CubeSat Satellite for Different Orientation Scenarios
ABSTRACT In CubeSats, because the size is limited, the estimation of the incident solar energy according to the orbital parameters and satellite attitude is more critical for the design process of the electrical power system. This estimation is helpful either for sizing of the power sources and energy storage or for defining the operation modes of the CubeSa
J. Aerosp. Technol. Manag.. Publicado em: 2016-03
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5. Fabrication of Cathode Materials Based on Limn2o4/Cnt and Lini0.5mn1.5o4/Cnt Nanocomposites for Lithium – Ion Batteries Application
AbstractCarbon nanotubes (CNTs) are a promising candidate material for use in lithium batteries due to 1D tubular structure, high electrical, thermal conductivities, and extremely large surface area. In this work, the MWCNTs were purified by dispersion in a mixture of HNO3 and H2SO4acids. The oxidized-MWCNTs were used as conducting addition to prepare a nano
Mat. Res.. Publicado em: 2015-10
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6. Simulação do intemperismo natural de pilhas zinco-carbono e alcalinas
Spent alkaline and Zn-C batteries were placed in seawater, rainwater or landfill leachate at room temperature for up 30 days in order to simulate natural weathering. After the experiments pH and electrical conductivity of the liquid were measured. The precipitate formed and the filtrate were submitted to metal analysis by ICP-OES. Seawater is the most corros
Química Nova. Publicado em: 2012
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7. Vibration energy harvesting using piezoelectric transducer and non-controlled rectifiers circuits
Vibration energy harvesting with piezoelectric materials is of practical interest because of the demand for wireless sensing devices and low-power portable electronics without external power supply. For practical use of vibration energy harvester with piezoelectric materials, it is necessary to process the alternating current (AC) by using different rectifie
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012
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8. Proposta de identificação dos parâmetros do modelo de bateria para uso na modelagem de sistemas de partida de veículos automotivos. / Identification proposal of battery model parameters for usage in the modeling of start system of automotive vehicles.
O objetivo desse trabalho foi investigar o modelo matemático para baterias de chumbo-ácido, usada em aplicações veiculares, mais adequado para a condição de descarga, que ocorre durante o teste de Cold Crank, e propor uma metodologia para identificar os parâmetros da bateria, a partir de ensaios experimentais. A simulação do teste de Cold Crank foi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/06/2011
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9. Preparação de vidros boratos dos sistemas 50B2O315PbO(35-x)Li2OxNa2O e 50B2O315PbO(35-x)LiFxNaF e determinação do efeito dos alcalinos mistos / Preparation of borate glasses from 50B2O315PbO(35-x)Li2OxNa2O and 50B2O315PbO(35-x)LiFxNaF systems and the evaluation of the mixed alkali effect
Different alkali glasses have been developed because exhibit a high ionic conductivity and can be used as solid electrolytes in the fabrication of devices such as batteries and chemical sensors. However, a deleterious effect emerges when two alkali ions are present in the same glassy matrix. The phenomenon, named of the mixed alkali effect (MAE), causes a no
Publicado em: 2010
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10. Polypyrrole and Li1.05Mn2O4 composites: preparation by dip coating or casting and electrochemical caracterization / Compósitos de Polipirrol e Li1,05Mn2O4 : preparação por dip coating ou casting e caracterização eletroquímica
Films of polypyrrole/Li1.05Mn2O4 composites were prepared by chemical synthesis over a carbon-fiber substrate, using the dipcoating and casting techniques, aiming at improving the performance of these materials as cathodes in secondary lithium or lithium-ion batteries. For this the following were investigated: i) electrochemical behavior of both materials (p
Publicado em: 2009
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11. Sistema supervisorio de gestão de multiplas fontes de suprimento para aplicações em veiculos eletricos / Energy management supervisory system of multiple power sources for electric vehicle applications
This work introduces an Energy Management strategy, for electrical vehicle applications, based on a fuzzy logic supervisory system that is able to combine three different power supply sources, i. e., fuel cell, battery and supercapacitor. The supervisory system coordinates the power flow between the power sources so that the system is able to provide high po
Publicado em: 2007
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12. Compósitos diamante-CVD/Fibra de carbono como ânodo em baterias de íons de lítio / DIAMOND/CARBON FIBER COMPOSITE AS ANODE IN LITHIUM ION BATTERIES
An innovative composite diamond/carbon fiber is presented for application as negative electrode (anode) in lithium ion batteries. In this sense, it was important the understanding and discussion of three subjects divided into: obtaining and characterization of the carbon fiber, used as substrate; growth and characterization of doped diamond film on the fiber
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/07/2006