基于FPGA的快速电池分选系统设计

Fast sorting system of battery based on FPGA

在动力电池生产过程中,电池内阻和电压是最主要的测试参数。由于动力电池的开路电压较高,现有的内阻测试仪只能在电池未成组之前进行测试,测试结果和成组后实际内阻差异较大。设计了一种基于FPGA(现场可编程门阵列)的快速电池分选系统,以硬件逻辑为基础,内建有硬件乘法器,控制、运算和分选等功能均由硬件完成。硬件电路直接由FPGA控制和协同工作,以减少处理器的介入和响应及通讯时间。该系统既能测试整个电池组的内阻,又能测量其它参数如电压、阻抗等,从而可有效提高动力电池的分选效率。

Inter-resistance and voltage were the two main test parameters in the process of producing the power battery. Because of high open-circuit voltage, inter-resistance could only be tested before grouping by the existed testers. However, the total test results were different from the group＇s resistance. Then a fast battery sorting system based on FPGA was designed. It was founded on hardware logic with hardware multiplier. The functions of controlling, computing and sorting were all completed by hardware. The circuit was directly controlled by FPGA. The processor＇s intervention and time of response and communication could be reduced. Not only the grouped battery＇s internal resistance, but also other parameters such as voltage and impedance could be tested by the system. Thus sorting efficiency could be effectively improved.