基于FPGA控制1tc6804-2的电池管理系统的研究

Research of Battery Management System Based on FPGA Control ITC6804-2

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20μs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;该系统可广泛应用于电动汽车或通用航空机上。

In order to improve the collecting speed and efficiency of multiple monomer batteries＇ voltage in battery management system, this thesis proposes a battery management system based on it that FPGA controls ITC6804--2. The sampling function of ADC in a single ITC6804 2 can complete collecting voltage or current of 12 monomer batteries within only 20t^s, and multiple ITC6804--2s can be cascaded to monitor the monomer voltage that a device needs. FPGA communicate with 1TC6804--2 through the SPI bus and thus can obtain voltage or current of multiple monomer batteries so that it can balance charging and discharging, estimate state of charge （SOC） and so on, making the whole equipment more simplified, reliable and efficient. This system can be widely used in electric vehicle or general aviation.