Smart Battery Power Management Unit
Deda, Selimcan (2014)
2014
Master's Degree Programme in Electrical Engineering
Tieto- ja sähkötekniikan tiedekunta - Faculty of Computing and Electrical Engineering
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Hyväksymispäivämäärä
2014-04-09
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201405131162
https://urn.fi/URN:NBN:fi:tty-201405131162
Tiivistelmä
In this project, the ways how a Smart 48V Battery Power Management Unit (PMU) which uses lead-acid batteries can be designed for wide range of industry usage are researched.
PMU is a modified version of Battery Management System (BMS). Since the batteries are designed for charging and discharging for their life, they need an optimum way to be monitored and/or balanced to increase their efficiency. The PMU system monitors the voltages and State-of-Charges (SoCs) of whole battery module & individual cells. PMU ensures reliable and safe battery operations.
MAX11068 is used in the project to meet the monitoring and/or balancing requirements of the BMS, and thus PMU. However, only using the MAX11068 is not enough for designing a PMU. In addition to the MAX11068, a microcontroller (Arduino Due) and a comprehensive Java program are used in the PMU project. The microcontroller is programmed so that it sends to and receives information from the Java program. The GUI application is included to let users to investigate the voltage and SoC variations in whole battery module & individual cells. The users also have an option to write the data to Microsoft Office Excel sheet. Therefore, they can make use of it whenever they want.
The complete PMU system monitors the voltages and SoCs of whole battery module and individual cells accurately. Moreover, the GUI displays the changes the voltages and SoCs of whole battery module and individual cells on the SoC and voltage charts.
At the end of the project, the theoretical knowledge is compared with experimental results.
PMU is a modified version of Battery Management System (BMS). Since the batteries are designed for charging and discharging for their life, they need an optimum way to be monitored and/or balanced to increase their efficiency. The PMU system monitors the voltages and State-of-Charges (SoCs) of whole battery module & individual cells. PMU ensures reliable and safe battery operations.
MAX11068 is used in the project to meet the monitoring and/or balancing requirements of the BMS, and thus PMU. However, only using the MAX11068 is not enough for designing a PMU. In addition to the MAX11068, a microcontroller (Arduino Due) and a comprehensive Java program are used in the PMU project. The microcontroller is programmed so that it sends to and receives information from the Java program. The GUI application is included to let users to investigate the voltage and SoC variations in whole battery module & individual cells. The users also have an option to write the data to Microsoft Office Excel sheet. Therefore, they can make use of it whenever they want.
The complete PMU system monitors the voltages and SoCs of whole battery module and individual cells accurately. Moreover, the GUI displays the changes the voltages and SoCs of whole battery module and individual cells on the SoC and voltage charts.
At the end of the project, the theoretical knowledge is compared with experimental results.