基于FPGA控制ltc6804-2的电池管理系统的研究

Research of battery management system based on FPGA control ltc6804-2

摘要:

为了提高电池管理系统中多块单体电池电压的采集速度与效率，提出了一种基于FPGA控制ltc6804-2的电池管理系统。单个Ltc6804-2里的ADC采集功能仅在20us内就可完成对12块单体电池的电压或电流的采集，并且多块ltc6804-2可进行级联从而可监测系统设备所需的单体电池电压，FPGA通过SPI总线与ltc6804-2实现通信，可快速获取多块单体电池的电压或电流从而可以在其内部实现系统的充放电均衡、荷电状态（SOC）估计等功能，并且精确度高，使整套设备更加简化与可靠，效率更高。本系统可广泛应用于电动汽车或通用航空机上。

Abstract:

Aiming at theSbattery management system ofSa single cell in theSacquisition of voltage and currentSspeed andSefficiency problem ,put forward a kind ofSbattery management system based on FPGA control ltc6804-2, FPGA realize the communicationSwith ltc6804-2 by SPI bus, theS12 batterySvoltage and theScurrent collectingScan be doneSonly within the 290usS, The system can achieve theSreal-time monitoringSof a plurality ofSmonomer battery voltage at the same time, the charge and dischargeSof the monomer batterySequalization, state ofSchargeS(SOC)Sestimation, serialSdisplay and other functions. Detailed description of the functionsSand role ofSeach part of the system module, make the complete set of equipment be more simplified and reliable and more efficient.