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Li-ion battery recycling
Bělaška, Patrik Vojtěch ; Lisá, Hana (referee) ; Preisler, Lukáš (advisor)
The bachelor’s thesis is focused on the recycling of li-ion batteries. In the first part primary and secondary battery cells are described together with their principle, composition, and materials. In the second part, lithium-ion cells, their principle, types of cathode and anode materials, electrolyte, separator, and casings are described in detail. The third part deals with battery pre-treatment and recycling technologies which include the most used hydrometallurgy, pyrometallurgy and less used direct recycling along with their individual types. The next part describes the mining options, the price of individual materials, largest producers, and weight comparisons before and after recycling of a selected battery. The last part focuses on the possibilities of battery recycling in the Czech Republic, the amount of waste batteries and current state of legislation.
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Design of an experimental facility for battery analysis
Kvasnička, Karel ; Sedlák, Petr (referee) ; Majzner, Jiří (advisor)
Assignment of bachelor´s thesis is to create experimental workplace for analysis of batteries. To find out the condition and the capacity of a battery we have to discharge and charge the battery and measure the voltage and the current. Parameters of batteries are changing with aging and usage. There are many types of batteries that are divided into two main categories, primary batteries and secondary batteries. Their properties depend on used materials and production technique. An experimental workplace was built for battery testing equipped with a regulated power supply, a electronic load, a data acquisition unit and safety components. The workplace is able to test various types of batteries. Measurements are automated with computer program.
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PV power plant project - category A1/A2
Pacalaj, Timotej ; Drápela, Jiří (referee) ; Morávek, Jan (advisor)
This thesis deals with the design of a category A1/A2 photovoltaic system for a specific building. The aim was to meet the requirements of the investor and the energy needs of the building. The thesis includes a research of PV connection requirements (PPDS-4, RfG), a review of available technologies and components, and system design using PVSOL software. The work also includes the production of project-level documentation for implementation, including a technical report, a single-pole schematic and a situation drawing. In addition to the technical aspects, an economic evaluation of the project is carried out in the thesis, providing the investor with an overview of the return on investment and financial efficiency of the PV plant. As a result, a comprehensive proposal for the implementation of a category A1/A2 PV plant is presented, taking into account both technical and economic aspects.
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Using of X-ray for distribution analysis of electrodes for secondary cell application
Macháč, Milan ; Bača, Petr (referee) ; Chladil, Ladislav (advisor)
This diploma thesis is focused on in-situ analysis of the composition of the negative electrodes of second secondary cells with using X-ray radiation. The first part is dedicated to the theory of lead accumulators, including charging, discharging, battery components and individual degradation mechanisms. The main part of the thesis includes the preparation of electrochemical in situ XRD cells and following measurement of the growth of lead sulphate crystals on the OCV potential. Furthermore, the lead cell was subjected to the measurement of the cyclic voltammetry around the working point of the negative electrodes. From these measurements was evident gradual increase of the lead sulfate crystals. The analysis was supplemented with electron microscopy images. In addition, were evaluated the in-situ particle analysis of the LTO Sigma sample.
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Carbon materials for power sources
Tichý, Jiří ; Bača, Petr (referee) ; Novák, Vítězslav (advisor)
This work deals with carbon materials and using them in electrochemical energy sources. Object of this work was to prepare carbon materials and investigate their electrical properties. The theoretical part objects of the carbon materials, their properties, application in electrochemical energy sources and measurement methods used in experimental part. Experimental part describes the preparation of the electrodes with various carbon materials and summarizes the results of measurements.
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Control algorithms for e-car
Hrazdira, Adam ; Fiedler, Petr (referee) ; Zezulka, František (advisor)
Cílem práce byl návrh a implementace řídicích algoritmů pro optimalizaci spotřeby energie elektrického vozidla. Hlavním úkolem byla optimalizace rozložení energie mezi hlavním zdrojem energie (bateriemi) a super-kapacitory v průběhu jízdního cyklu. Jízdní výkonový profil je odhadován a předpovězen na základě 3D geografických souřadnic a matematického modelu vozidla. V první části jsou uvedeny komponenty vozidla a jejich modely. Poté jsou představeny algoritmy na základě klouzavého průměru a dynamického programování. Byly provedeny simulace a analýzy pro demostraci přínosů algoritmů. V poslední části je popsána Java implementace algoritmů a také aplikace pro operační systém Android.
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Accumulation of electricity from renewable sources
Plíšek, Petr ; Špiláček, Michal (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis deals with the issue of accumulation of electricity produced by renewable sources. The first part focuses on the description of possible ways of accumulation, especially with focus on those methods, that are suitable for renewable energy sources. The next part deals with the design of the accumulation energy in the compressed air for the selected photovoltaic power plant. The necessity of designing a particular method of energy storage, is also its technical and economic analysis, which is the content of the last part of the thesis.
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Cyclic tests of lithium storage systems
Koňak, Tomáš ; Mastný, Petr (referee) ; Morávek, Jan (advisor)
The bachelor’s thesis focused on problematics of cyclic tests of lithium storage systems. The thesis introduces the methods of accumulation of electricity. The practical part deals with the assembly of a workplace for the implementation of automatic discharging and charging cycles.
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