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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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Possibilities of using a photovoltaic system in a family home
Herník, Martin ; Linda, Jakub (referee) ; Toman, Filip (advisor)
This bachelor thesis deals with the design of a photovoltaic power plant that will meet the needs and conditions of a specific family house. The design includes photovoltaic options such as battery and non-battery system solutions. In this work, the selection of appropriate components was made, where the emphasis was on achieving optimum system performance and minimizing costs while maintaining given efficiency and reliability. Finally, the economic evaluation of the two solutions in terms of cost and paybacks is assessed. The final design is proposed in the light of the current energy price situation and the continuous forward movement of PV technology.
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Design of a PV plant for a family house
Kalousek, Stanislav ; Vaněk, Jiří (referee) ; Jandová, Kristýna (advisor)
This bachelor thesis deals with the design of a photovoltaic power plant in combination with a heat pump for a family house. The theoretical part of the thesis includes a detailed analysis and analysis of currently used photovoltaic and heat pump technologies with the use of possible government subsidy programs. Furthermore, the practical part describes the layout of the family house for which both systems are proposed. Based on the knowledge gained, the design of the heat pump and photovoltaic power plant is proposed, including a system for the storage of electrical energy or the sale of surplus to the distribution grid. In addition, a simulation of the operation of the PV power plant is performed in the professional design environment PV*Sol Premium, including a 3D model, module shading, economic and energy analysis of the PV power plant design. Finally, an evaluation of the combination of a PV plant with a heat pump and a comparison with a commercial design from a professional PV and HP installation company is made.
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Cognitive Game Battery: Assessing and Identifying Deficits in Memory, Attention, Problem-Solving, and Decision-Making Skills
Češka, Ondřej ; Malik, Aamir Saeed (referee) ; Hussain, Yasir (advisor)
Cílem této práce je neinvazivní posouzení vybraných kognitivních domén (pozornost, paměť, rozhodování) pomocí nové mobilní aplikace vyvinuté za tímto účelem. Posuzování kognitivních nedostatků je důležité pro prevenci neurokognitivních poruch. Byly analyzovány existující posuzovací úlohy a na jejich základě byla navržena a úspěšně implementována kognitivní herní baterii sestávající ze 3 mobilních her. Aplikace je určena pro platformu Android a byla vyvinuta v Unity engine. Byl vytvořen systém pro sběr a uchovávání herních dat a jejich následné zhodnocení za pomoci cloudové dostupnosti. Jeho spolehlivost byla posouzena na základě vlastního sběru dat a poznatků existujících studií. Vyvinutá aplikace přináší jiný pohled na posuzování kognitivních nedostatků, porovnává uživatelem dosažené skóre s ostatními hráči a poskytuje mu detailní zpětnou vazbu.
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Design of photovoltaic system configurations for a family house
Prágr, Vojtěch ; Zlevorová, Tereza (referee) ; Toman, Filip (advisor)
This bachelor thesis focuses on the design of a photovoltaic system for a specific single-family house. During the draft, the house’s energy consumption was processed, and based on this data, three different system configurations were proposed. Two of these configurations have different power outputs and storage capacities, while the third was designed to operate the water heater that the house contains. In the thesis, the proposed systems were evaluated from an economic perspective, considering the initial costs of individual systems, as well as the operation and service expanses. Finally, according to these aspects, the ROIs of individual configurations were determined.
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Modeling of temperature phenomena in Li-Ion cells
Grézl, Vojtěch ; Sedlařík, Marek (referee) ; Vyroubal, Petr (advisor)
This thesis deals with the issue of heat generation in Li-ion batteries, which can have a negative impact on the battery properties and functionality. The thesis can be divided into two main parts. The theoretical part focuses on the theoretical description of Li-ion batteries, heat generation, thermal effects, ideal operating temperatures, modelling of these situations, the occurrence of different types of abuse and the consequences that can arise from incorrect or inadequate thermal management. The practical part focuses on the analysis of the results from the discharge temperature measurements for different load values C and the initiation of the effect known as thermal runaway for 18650 Li-ion cell, and then on how to simulate these behavior in the Ansys Fluent.
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Workplace for measuring capacity and rate-capability characteristics of lithium-ion batteries
Cápal, David ; Máca, Josef (referee) ; Libich, Jiří (advisor)
This master's thesis deals with the issues of lithium-ion batteries, describing common types of commercial lithium-ion batteries, their advantages, disadvantages, and characteristic properties. The thesis focuses in more detail on the influence of temperature on the characteristics of lithium-ion battery. The thesis describes the design and construction of a workplace for measuring capacity and rate-capability characteristics of lithium-ion batteries at low and high temperatures. The thesis also describes the implementation of a cooling and heating module using a system based on Peltier devices.
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