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BQ76PL536芯片采集锂电池电压问题

Other Parts Discussed in Thread: BQ76PL536

我利用2个BQ76PL536芯片采集8并12串(先并后串)锂电池组电压时,如果电池组没放电时,电压采集正常;电池组以3A电流进行放电时,数据采集开始出错;电池组以7A电流放电时,电压完全采集不到。请问这个原因是啥?

  • 你好。如果无电流正常而有电流则不正常而且电流越大越不正常,那很有可能是通讯受干扰了。

    两个536之间是级联吧?检查一下两个地平面连接,检查上下级之间、536与主机之间的SPI连接。