你燒錄完以后,Full reset一下.看看結果是不是有改善.怕是你沒有燒錄成功.

回2樓,每一個電池包我都在燒錄完之后進行了復位,并且讀取了EEPROM,register值是正確了之后才進行了充放電.但充放電完成后,讀取EEPROM發現還是有EEPROM丟失的情況.
對于bq27210還有一個問題是: cycle since learning 計數在什么條件下才能變化, 因為我通過data log 發現這個值的變化和其他的值(EDV1、EDVF、Voltage、Remaining capacity、RSOC等等)沒有什么因果聯系.因為我知道bq2084的cycle count 增加的條件很簡單(只要每次放電容量大于Cycle Count Threshold value就能增加),而bq27210的cycle since learning卻讓人捉摸不透(因為datasheet里沒有明確說明這個值得變更條件)

The bqJUNIOR learns the capacity of the battery during actual use conditions and will update LMD when a valid learning cycle occurs. The bqJUNIOR learns the capacity of the battery by measuring the capacity removed from the battery when it is discharged from full (NAC = LMD) to the first end-of-discharge (EDV1) voltage threshold without any learning cycle disqualifying event.

The conditions you show is mainly told the LMD update conditions.
But the "cycle since learning" count is not updated when the voltage down to EDV1 threhold(compensated) from full(VDQ=1).

A learning cycle can be disqualified by any of the following conditions:
1. Cold temperature: Temperature < 0C when the EDV1 threshold voltage is reached.
2. Light load: A capacity learning cycle is disqualified if average current is less than or equal to 2 times the initial standby load when the EDV1 threshold voltage is reached.
3. Excessive charging: Cumulative Charge > 255 NAC counts (910 μVh) during a learning discharge cycle (alternating discharge/charge/discharge before EDV1 is set).
4. Reset: VDQ is cleared on all resets.
5. Excessive self-discharge: NAC reduction from self-discharge estimate (0.195%) performed 64 times.
6. Self-discharge at termination of learning cycle. If self-discharge estimate causes CAC  DC/16, VDQ is cleared.

謝謝mikecai這么熱心,但實際測試中我發現的問題是,learning cycle 的更新條件,并不和learning cycle disqualify 相一致,即learning滿足這些條件后,learning cycle 并不會增加.它的更新不只是一次充電和放電就能達到的.具體的我發你一份data log.

I would like to check your datalog.
Mail address:
mikecai1@hotmail.com

估計是你的放電有問題,不要不生過放,,否則會初始化EEPROM