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bq76925做balance时,测得电压感觉很奇怪



测得数据如下

闭合开关 1 2 3 4 5 6
             
  5 5001 3365 3366 3365 3355
  4190 69 5014 3356 3358 3356
  3366 5006 50 5013 3355 3358
  3353 3363 5001 49 3354 4999
    0 0 0 0 0
  3388 3389 3386 5038 3391 0
             
合计 14302 16828 16816 16822 16823 16159

2,3,4,5,6的闭合数据可以理解

但是1的数据为什么会这么奇怪呢?