BQ78350-R1 电量读取值 与 实际电池使用容量 偏差较大

1. 电流采样有5%的测量误差， 建议做一下电流校准。 

2. 看配置用的是fixed edv算法， 但是fixed EDV 2默认配置是3.5, 实际的应该在3.3V左右， fixed edv1 和fixed edv0 也需要做相应修改， 

谢谢回复。

有些疑惑：

1：如何看出是fixed edv算法？

参照bq78350R1 technical reference.pdf;page.63

If the [EDV_CMP] bit in CEDV Gauging Configuration is set, automatic EDV compensation is enabled（能否理解为 是CEDV和Fixed EDV自动切换？）

and the bq78350-R1 computes the EDV0, EDV1, and EDV2 thresholds based on values stored in CEDV
Cfg subclass of data flash and the battery's current discharge rate and temperature.

However, if [FIXED_EDV0] bit in CEDV Gauging Configuration is set, then even if [EDV_CMP] = 1, then EDV0 is a
fixed voltage value and is not compensated.

按照配置中CEDV Configuration 为0X02 ，即Fixed_EDV0=0；EDV_CMP=0；此时应该是CEDV算法？

2：如果是fixed_EDV算法，需要更改那些参数，能否指点下？

3：还有一个参数没有看懂：

The bq78350-R1 disables EDV detection if the measured battery discharge current (Current()) exceeds
the Overload Current threshold, which is scaled by IPSCALE. The bq78350-R1 resumes EDV threshold
detection after C drops below the Overload Current threshold. Any EDV threshold detected is reset after
charge is applied and [VDQ] is then cleared after RC has increased by a value of 10, which is scaled by
IPSCALE.

这里的CEDV CFG——OverCurrent（现在设定为5000mA） 和OCD中Threshold 电流（现在设定为30000mA）区别？

你好，请问下咱们的电池老化仪是自己研制的还是外购的？想做电池放电，记录数据，没找到合适的放电设备。多谢。