Research And Design Of Power Battery Intelligent Management System

The research and promotion of new energy vehicles have become the development direction of contemporary automobile response to environmental pollution problems.As a core component of new energy vehicles,battery management system has very important research significance and application value.Based on the new lithium-ion battery,this paper uses the architecture of main control board and acquisition board to design the battery management system.The battery voltage and temperature data are collected to realize the balanced management and control of the battery pack.At the same time,the GPRS technology is combined to transmit the data to the mobile phone terminal,which achieves the purpose of remote monitoring and has high practical value in the field of new energy vehicles.The paper is divided into three parts: hardware circuit design,system software design and system verification.The hardware circuit of the system adopts a modular design idea.The main control board relies on the ARM9 architecture S3C2440 chip as the data control and management core,and designs the crystal oscillator circuit,JTAG circuit,power circuit,reset circuit,SPI communication circuit and GPRS serial communication circuit.The acquisition board uses the integrated battery management chip LTC6803,equipped with communication isolation chip and temperature sensor,to design address selection circuit,voltage acquisition circuit,temperature detection circuit and hardware anti-interference circuit.The software design of the system uses the Linux development environment platform,applying the layered structure idea,the bottom layer is configured with the parameters related to the hardware platform and the system circuit,the upper layer carries out the voltage acquisition,temperature acquisition,equalization module drive,serial port drive,GPRS driver and software anti-interference design.The battery management system designed in this paper has been debugged and verified to determine the feasibility of the solution and the stability of the entire system.Through the comparative analysis of the voltage and temperature data acquisition results,the expected results are achieved and the design task is completed.The design has a good development prospect in electric vehicle applications.