BQ76952: 将BQ76952的VC1~VC15的某一个引脚，人为断开和电芯的连接，此时断开的引脚的电压检测会有负值。

您好，由于问题比较复杂，我需要询问更了解这款芯片的TI工程师，再帮您解答，稍后回复

谢谢您，我还有一个问题也请教一下：e2echina.ti.com/.../bq76952-bq76952-ts2

您好，请参考下面答复

The situation with one cell at or below 0 and the next at high voltage is common of a disconnected cell input.  Look for an open on the VC3 pin, its filter resistor or the wire to the cell.  On an EVM look for a missing or damaged cell simulator shunt. The VC3 input will float or be pulled below the VC2 input and the input will go negative.  Cell 4 reaches a maximum value then rolls over to a negative number.  The ADC is 24 bits, above 7FFFFF or 8388607 or about 6.06V, the value rolls over to 0x800000 and is a negative number.

When the cell voltage is lower and the 2x cell voltage from the open wire does not exceed 6V the reported value stays a positive value.

您好，根据您的回答，采集线VC3断开后应该是如上图所示的情况吧。

请问断线后的电压X，它会有个范围吗？

我们需要对此类异常数据做一定的处理，谢谢！

您好，请参考下面的内容。

The open wire will pull down on the disconnected pin.  The lower of the cells, cell x will read about -0.3V as shown.  At lower cell voltage (up t approximately 2.9V) the upper of the cells, cell (x + 1) will read about twice the cell voltage + 0.3V up to 6V, then it will roll over to -6 V as you pictured above