关于BQ76940的参考设计，
有一些疑问是否可以解答一下，谢谢！
从系统图上看2904只用于做比较器的功能是么？理解有没有问题，若电池接反，则Q1关；若接正确，则Q1打开，R89（237K）和R96（115K）进行分压，供给ADC采样；从原理图上看这样的分压后电压很高，一般的ADC输入承受不了这么高电压，精度是按这个电路测的么？
2904的供电，从电气性能上看，2904最大工作电源26V，17串电压显然大于48V；运放输入脚对地电平也不够；如果接到比如13或14脚，功耗应该会不一致；
如果Cell13和CEll17rc反接，运放应该容易烧，这也算是一种操作上的风险，需要提醒现场操作人员；
电路的温漂性能如何；
实验时D29和D31稳压管是否有接，对精度应该有影响；
If you go to the page for the TID and scroll down a bit, you will get to a place where you can download the schematic. Here is the relevant portion of the design
So the V- supply of the op amp is not directly connected to ground. However, I do not know exactly what the operating voltage of the node will be. It will depend on the operating conditions which will determine the voltage across the drain-source. I'm not sure what is going on across Q20 either. It almost looks like they tried to diode connect the transistor.
Unfortunately, there are no TINA sim files already built. If you look in the bottom right of the schematic, you can see the name of the engineer that designed, or at least put into Altium, this project. I recommend you email him directly to confirm. I do think that you are right, however, that the supply voltage will be too high if the supplies are Vbat and GND.
