This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

上电过程中第一次激活后导致SUV置1,PF启动

Other Parts Discussed in Thread: BQ40Z50

使用的是BQ40Z50+BQ294711方案,在实际制样中发现,当电芯组与保护板装过程后,激活芯片,SUV就置1了,PF启动,实际测量电芯组各节电压,均正常。故有如下疑问:

1. 电芯组与保护板组装后,芯片未激活,此时芯片如何会读取电芯电压?

2. SUV设置2200 mV,各节电芯电压均高于这个电压值,上电顺序也是从B-依次到B+,SUV如何会启动?

3. 如何规避该问题发生?目前方法是Fuse_en先关闭,上电且激活后再发送0X26命令开启该功能。