PERFORMANCE OF BATTERY AND ULTRACAPACITOR AT VARIOUS TEMPERATURES

Battery is important for generating and storing electrical energy. It is sold at a rate of
several billions of dollars per year worldwide. Battery can be found in nearly all
motor vehicles, all types of portable electronic equipment, smoke alarms and others.
However, it has a limited number of charge and discharge cycle because the process
involves chemical substances. These chemical reactions have parasitic thermal
release that cause battery to heat up and initiate unwanted reaction that could affect
the batteries performance. With the emergence of technology, ultracapacitor is
developing. Research has been proven that ultracapacitor have many advantages
such as long life cycle, high charging and discharging rate, high capacitance in a
small size and wide temperature range. However, people are not venture to looking
and comparing the performance ofultracapacitor and battery at various temperatures.
This project investigates the battery, ultracapacitor and battery-ultracapacitor (B-UC)
combination performance at various temperatures. The main activity is to design the
best equivalent circuit modes for battery standalone, ultracapacitor standalone and BUC
combination to be tested at various temperatures. Throughout this project, a
working prototype of operating circuit consisting of battery, ultracapacitor and the
Light Emitting Diode (LED) as a load will be constructed. Data Studio software with
combination of Science Workshop 750 interface is used to verify the graph of current
and voltage produced in the equivalent circuit model. In this project, the finding in
this research indicates the ultracapacitor standalone supersite the performance of
battery standalone with regard when tested at various temperatures.
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