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Comparison of parameters of selected types of commercial lithium-ion batteries
Špina, Martin ; Libich, Jiří (referee) ; Bača, Petr (advisor)
This thesis deals with operation principles of Lithium-ion battery. It evaluates its characteristics, advantages, and disadvantages. Technological processes and materials used in manufacturing and recycling are also discussed. Practical part of the thesis evaluates initial capacity of given Li-ion cells at different loads. Batteries are then cyclically charged and discharged, and its capacity and other parameters are determined. Electrochemical impedance spectroscopy data are also taken and evaluated for batteries in new-like condition, used batteries and cycled batteries as the capacity fades.
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Electric drive of the wheelbarrow
Lažek, Tomáš ; Procházka, Petr (referee) ; Pazdera, Ivo (advisor)
This bachelor’s thesis deals with proposal of an electrical low-cost drive for the wheelbarrow. The first part of thesis is devoted to overview of operational characteristics of available electric motors, batteries and gears suitable for the construction of an electric drive. In the next part the thesis deals with the design and implementation of a pulse converter for a specific DC motor. The converter will be controlled by the integrated circuit UC3638.
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Miniature charger for a battery pack Li-ion 14,4V/2Ah
Bartoš, Miroslav ; Huták, Petr (referee) ; Vorel, Pavel (advisor)
This bachelor‘s thesis describes the design chargers for lithium-ion batteries. The proposal includes the selection of suitable converter topologies, design power, control and excitation components and a design of high frequency transformer. In the next part the thesis deals with the BMS, which stands for battery management system. The last part deals with the production of the proposed switching source and BMS. The project documentation for the production of a charger is also provided.
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Comparison of parameters of selected types of commercial lithium-ion batteries
Špina, Martin ; Libich, Jiří (referee) ; Bača, Petr (advisor)
This thesis deals with operation principles of Lithium-ion battery. It evaluates its characteristics, advantages, and disadvantages. Technological processes and materials used in manufacturing and recycling are also discussed. Practical part of the thesis evaluates initial capacity of given Li-ion cells at different loads. Batteries are then cyclically charged and discharged, and its capacity and other parameters are determined. Electrochemical impedance spectroscopy data are also taken and evaluated for batteries in new-like condition, used batteries and cycled batteries as the capacity fades.
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|
| |
|
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Electric drive of the wheelbarrow
Lažek, Tomáš ; Procházka, Petr (referee) ; Pazdera, Ivo (advisor)
This bachelor’s thesis deals with proposal of an electrical low-cost drive for the wheelbarrow. The first part of thesis is devoted to overview of operational characteristics of available electric motors, batteries and gears suitable for the construction of an electric drive. In the next part the thesis deals with the design and implementation of a pulse converter for a specific DC motor. The converter will be controlled by the integrated circuit UC3638.
|
|
|
Miniature charger for a battery pack Li-ion 14,4V/2Ah
Bartoš, Miroslav ; Huták, Petr (referee) ; Vorel, Pavel (advisor)
This bachelor‘s thesis describes the design chargers for lithium-ion batteries. The proposal includes the selection of suitable converter topologies, design power, control and excitation components and a design of high frequency transformer. In the next part the thesis deals with the BMS, which stands for battery management system. The last part deals with the production of the proposed switching source and BMS. The project documentation for the production of a charger is also provided.
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