Design And Development Of Battery Packs Master Unit And State Of Charge Estimation For Electric Vehicle

To solve the environmental pollution and energy shortages problem, Electric vehicles as zeropollution cars come into the public eye and become the research object of major car companies allover the world. Battery technology and battery management technology as the key technology ofelectric vehicles decided the endurance mileage and price of electric car in significant measure. In thepresent condition of battery technology, it’s necessary to do some research and development to thebattery management technology.This article mainly design and develop battery management system at the following aspects suchas the state of charge estimation of the battery pack, real-time monitoring of the total voltage, chargeand discharge current of the battery pack and control strategy research of battery management system,mainly includes:First of all, develop the overall design of the battery management system. Improve the overalldesign in order to realize the function test and optimal use of hardware resources according to theexisting experimental condition.Secondly, select TMS320LF2407A as the microprocessor of battery management system masterunit, designs the hardware of the DSP peripheral interface circuit and the data acquisition circuit.Thirdly, use C language programming of various functional modules of the battery managementsystem in the software development platform CCS3.3, mainly including the main program module,program initialization module, state of charge estimation module and PC serial communicationmodule.Finally, build the experimental test equipment of battery management system, the test of system’shardware and software verified that the battery management system designed in this paper cancomplete different functional requirements under the experimental conditions.