doi:

DOI: 10.3724/SP.J.1249.2018.05473

Journal of Shenzhen University Science and Engineering (深圳大学学报理工版) 2018/35:5 PP.473-479

The master control software for power lithium battery management system based on MCS D2P development platform


Abstract:
The traditional battery management system (BMS) development method not only is not conducive to the software implementation of advanced algorithms, but also has the disadvantages of long development cycle and high cost. To overcome these problems, the BMS hardware is built based on the MCS D2P rapid control prototype development platform. The power lithium battery is made up of multiple battery cells in series. In view of this characteristic, ① the BMS real-time measurements of battery voltage, current, cell voltage and temperature, ② the BMS real-time evaluation of battery residual power, ③ the main hardware structure composed of main control module, detection module and equalization management module are analyzed. On this basis, the data flow of master control software, the main program flow chart, the data acquisition flow chart and the state of charge (SOC) estimation flow chart are designed. Taking a 48 V, 50 Ah lithium iron phosphate battery pack consisting of 15 cells as the test object, the periodic charging and discharging test is designed. The test results show that both the measurement errors of the battery total voltage and current are less than ±0.5%, the measurement error of temperature is less than ±0.5℃, the difference between the measured value of SOC and the theoretical value of SOC is also within 8%, which verifies the feasibility and the correctness of the design of the master control software.

Key words:information processing technology,MCS D2P development platform,power lithium battery,battery management system,data acquisition,state of charge (SOC) estimation

ReleaseDate:2018-12-14 06:52:39



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