bq28z610EVM开发板的使用问题

qwqwqw2088

bq28z610EVM开发板的使用问题 [复制链接]

问题：
bq28z610EVM开发板关闭充电MOS管，停止充电的判断条件有哪些？

充电过程中遇到一个问题，当Relative State of Charge等于100%，Remaining Capacity等于 Full Charge Capacity时，充电被关闭了，OperationStatus寄存器的bit2（CHG）被清零，但是Cell 1 Voltage和Cell 1 Voltage仍然小于COV（4300mV），表示还没有满电。想问问OperationStatus寄存器的bit2（CHG）清零，停止充电的触发条件有哪些？

回答：
COV是cell 电压过充，停止充电的条件您参考TRM 13.4.9 Termination Config

追问：

Termination Config中，
1、Charge Term Taper Current 默认是250mA，表示充电电流小于250mA就停止充电吗？
2、Charge Term Voltage默认是75mV，怎么理解？

回答：

The Charge Voltage check is probably the first limit to initiate primary charge termination. The taper current is probably the last limit to be met. This Charge Voltage check is dependent on charger characteristics. It needs to be set so that ripple voltage, noise, and charger tolerances are taken into account. A low value selected can cause early termination. If the value selected is too high, then it can cause no or late termination detection.