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.

BQ76940+BQ78350,不能修改OCD threshold值

Other Parts Discussed in Thread: BQ76940, BQ78350

使用BQ76940+BQ78350做了一个BMS,由于系统的开机电流比较大,达到16A。

按照BQ78350的TRM,修改OCD threshold数值,改成 -30000mA。

实测的过程中,发现该值无效,开机后直接进入OCD保护模式

似乎系统的OCD threshold仍然是6000mA。

此外,系统运行起来以后,电流可能达到50A,如何设置OCD threshold数值呢?

根据TRM的描述,OCD threshold最多只能到-32000mA。

  • OCD:
    1- Check what your overcurrent for discharge value is.
    2- Same as COV. In order for the error to be cleared, the current must fall below the configured "recovery" threshold. By default, this limit is set to +50mA. That means that you must charge a little bit for the error to be cleared. In our system, we use a negative close to zero (otherwise, this error would never clear).
  • 修改后,重新读取一遍确认是否修改成功!