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关于参考设计BMS的接地问题

我看了好多TI关于电池组检测保护的参开设计板子,发现板子上面所有器件的GND都与BAT-相连,避开了电流检测电阻,这样接不就检测不到板子本身的电流损耗了?TI的设计如下图所示:

我个人觉得 GND应该与PACK-相接呢?