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Battery charger
Paták, Michal ; Kopečný, Lukáš (referee) ; Burian, František (advisor)
This diploma thesis deals with battery charging. The thesis describes qualities and possi-bilities of lithium battery charging. The charger is independent on the input voltage and recharges batteries carefully. Due to a careful recharging process it is needed to measure the voltage at various cells of the battery and then balance this voltage. Since the charger is to be implemented in a robot, it is needed to switch the operation from an external source and the battery. The first part of the project deals with qualities of batteries and the way of their recharging. In the second part I design an individual blocks charger. In the third part I deal with a communication with a computer charger and data visualization. And in the last part I designed a program for the charger.
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Testing and charging of accumulator cells
Sršeň, Jan ; Kubánek, David (referee) ; Lattenberg, Ivo (advisor)
Direction of the master's thesis is design and construct electronic device for testing available accumulators. Than there are in detail subscribe some metods of charging cells and their right usage to select type of cells. Also eventually problems that can become if the choice is false. Next part contains description of principles as several type accumulator works and their loading characteristic witch are important know for choose the best testing way. The most important knowledge is detection of stop point charging when accumulators are charged and following charging can be dangerous. Because there are more methods to detect this point so in thesis are overwrite. The most important part is design of tester. That is mapped to more segments witch communicating together. Controller part of intelligent tester contains ATmega128 microcontroller so there is present a passage of program code. Last section of master's thesis describe a physical consruction and explain division for smaller parts and hole process of tester function.
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Development control programme for autonomous fotovoltaic system
Janáč, Stanislav ; Vaněk, Jiří (referee) ; Bača, Petr (advisor)
The project considers realization system, which allows us to test six different operation modes on lifetime of accumulators. The system will be connected to computer, that will perform measurement of current and voltage and switch betwen charge and discharge modes. The measured values will be recorded in certain time intervals to computer memory. After some time these measured data will be analised and the most optimal operational mode will be set.
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Charger for small accumulators
Dvořák, Pavel ; Zeman, Václav (referee) ; Kolka, Zdeněk (advisor)
Work will address the characteristics of small batteries. They are described types of charging process, charging time and charging currents, depending on their effectiveness. Great attention will be directed to draft Chargers, working in the area of continuous or discontinuous modes. Furthermore, the calculation of individual components and their influence on the running drive. The charger will be simulated by PSpice program and powered photovoltaic. Work will focus on the maximum efficiency when the incident light intensity. With related setting maximum efficiency and maximum power tracking using microprocessor-controlled detention. The charger will detect the input voltage, battery voltage and current. Depending on these values will be changed duty cycle PWM.
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Charging station NiMh battery packs
Pochylý, Vít ; Otáhal, Alexandr (referee) ; Šteffan, Pavel (advisor)
The aim of this bachelor thesis is to get acquainted with the characteristics of rechargeable accumulator batteries and their charging and on the basis of this obtained information to design a charger of larger number of batteries. The design and later construction of the charger will be designed for 6 battery packs, which consist of six NiHM rechargeable cells. This means that the charger will be able to charge 36 of these cells. The main advantage will be the control of the charger using a microcontroller, which will allow the appropriate selection of the charging cycle, display of information and control by buttons.
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Functional blocks for the development of autonomous photovoltaic system
Ovesný, Karel ; Křivík, Petr (referee) ; Bača, Petr (advisor)
The project considers realization system, which will allow us to test six different operation modes on lifetime accumulators. The system will link to computer, which will execute measurement current and tension and switch betwencharging and discharging modes. The measured values will record in someone time intervals in to computer memory. After someone time will analise these measured valuer and will provide optional operation mode.
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Design of charger with balancer
Paták, Michal ; Kopečný, Lukáš (referee) ; Burian, František (advisor)
This semestral project deals with battery charging. The project describes qualities and possibilities of lithium and lead-acid battery charging. The charger is independent on the input voltage and should considerately recharge the batteries. Due to considerate recharging process to measure the voltage at various articles of the battery is needed and then balance this voltage. Since the charger is to be implemented in a robot, it is needed to switch the operation from an external source and the battery. The first part of the project deals with qualities of batteries and the way of their recharging. In the second part I design a charger block. In the third part I design the individual blocks charger and in the last part I design a software for changer.
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Development of autonomous fotovoltaic system
Svoboda, Luboš ; Vaněk, Jiří (referee) ; Bača, Petr (advisor)
The project considers realization system, which will allow us to test six different operation modes on lifetime accumulators. The system will link to computer, which will execute measurement current and tension and switch betwencharging and discharging modes. The measured values will record in someone time intervals in to computer memory. After someone time will analise these measured valuer and will provide optional operation mode.
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Photovoltaic battery charger with sun tracking
Knob, Martin ; Frýza, Tomáš (referee) ; Kufa, Jan (advisor)
This thesis describes the design of photovoltaic battery charger. The charger can tracking the Sun and tilt the panel in azimuth and elevation. The device includes an MPPT regulator to optimise the energy produced by the photovoltaic cell from the Sun. This photovoltaic charger is designed to charge Li-Ion batteries and includes appropriate charging and protection circuits. The charger is energy self-sufficient, which means that it does not need an additional power source. Another purpose of this device is to measure electrical quantities. The device sends the measured data wirelessly via Wifi.
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Charging station NiMh battery packs
Pochylý, Vít ; Otáhal, Alexandr (referee) ; Šteffan, Pavel (advisor)
The aim of this bachelor thesis is to get acquainted with the characteristics of rechargeable accumulator batteries and their charging and on the basis of this obtained information to design a charger of larger number of batteries. The design and later construction of the charger will be designed for 6 battery packs, which consist of six NiHM rechargeable cells. This means that the charger will be able to charge 36 of these cells. The main advantage will be the control of the charger using a microcontroller, which will allow the appropriate selection of the charging cycle, display of information and control by buttons.
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