BQ40Z50用于4串设计,电池压差大,但是均衡不开启,使用的是外置均衡,但是CB状态位一直不置高,不知道哪里出现问题,麻烦指导一下
KW X:
硬件电路是啥样的?建议传下硬件原理。
Star Xu:
When the bq40z50-R1 is in CHARGE mode, it follows these steps during cell balancing:
a. Check if any of the pre-calculated Cell Balance Timers are > 0.
b. The cell balance FETs are turned ON for the corresponding cell balance timers that are ≠ 0.
您的cell balancing config 是不是根据TRM 的7.2 Cell Balancing Setup计算的。