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BQ27Z746: 低温-10℃ log数据异常

Part Number: BQ27Z746
Other Parts Discussed in Thread: GPCRB

Hi,

最近新电池项目使用TI,BQ27Z746芯片,1S1P,在低温-0°C 0.2C(1080mA)老化测试时,log数据有比较奇怪的现象:
1、25℃电池充满后,降温至-10℃过程中,约-7℃时,FCC的容量直接从2964mAh掉到0;
2、-10℃ 0.2C放电过程中,前几分钟剩余容量为0(正常从放电的那一刻开始就会更新),突然更新剩余容量;
如上,不是偶然现象,两个电池复测同样现象(共四次),该电池容量为5400mAh min,麻烦各位工程师解答一下,谢谢!