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National Repository of Grey Literature 13 records found  previous11 - 13  jump to record: Search took 0.00 seconds. 
Battery Arc Welder
 Hrdina, Adam ; Patočka, Miroslav (referee) ; Vorel, Pavel (advisor)
This master’s thesis deals with the design and fabrication of DC arc welder supplied from its own rechargeable battery. Battery cells’ type is LiFePO4 which can provide high currents even at relatively low capacity. The BMS circuits are designed within the battery. Major power part of the welder is a step-down converter with synchronously switching low transistors at the position of free-wheel diode. The converter operates at 100 kHz frequency. The current of the battery welder can be regulated in the range from 0 to 120 A.
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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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Battery Management Systems for LiFePO4 Accumulators
 Sejkora, Petr ; Krajsa, Ondřej (referee) ; Kubánek, David (advisor)
This thesis is about BMS systems for the protection, management and supervision of battery-assemblies serial combination of multiple cells. Next part of the thesis is about facilities for an elementary protection of individual cells before overcharging and undervoltage. Draft shall take into consideration the simplicity, low idle power, security function, modifiability for use with other threshold voltages and low cost design. Function is verified by simulating the operation and measuring.
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National Repository of Grey Literature : 13 records found   previous11 - 13  jump to record:
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