Other Parts Discussed in Thread: BQSTUDIO, GPCCHEM,
您好,有两个问题咨询下
1、我这边电压校准好了 但是读取不准确。充电到28.4V,仪表只能读到26.8V,偏差近2V,请问什么原因?应该怎么校准?
2、我设置FC%=-1,TAPER voltage=1000mV charging voltage=27600mV,电流300mA,满足充电终止条件,为啥[FC]不置1,学习不到05。
附件bqstudio和老化柜充放电数据
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您好,有两个问题咨询下
1、我这边电压校准好了 但是读取不准确。充电到28.4V,仪表只能读到26.8V,偏差近2V,请问什么原因?应该怎么校准?
2、我设置FC%=-1,TAPER voltage=1000mV charging voltage=27600mV,电流300mA,满足充电终止条件,为啥[FC]不置1,学习不到05。
附件bqstudio和老化柜充放电数据
您好,请问您用GPCCHEM 工具找到了哪个 CHEM ID ? 您能分享一下报告吗?
电压测量还取决于所使用的分压器电阻器。 校准应该在整个堆栈电压下完成。 您可以按照 EVM 用户指南获取校准说明: https://www.ti.com/lit/pdf/sluu904
您好,我这边校准OK,充电截止后[FC]也置1了,然后静置后[VOK]变0,[OCVTAKEEN]也置1,但是update status还是04,这个是什么原因?我看规格书就这几个条件,也都达到了。铁锂电池,ID=400,容量8000mAH,充电电流1650mA.
您好,还需要满足 Qmax 更新的其他条件才行。 必须在 2 个 OCV 点之间将 DOD 更改为 90%才能更新,您能否上传一下 GPCCHEM 报告?
BQ34Z100-G1 的 TRM中有关于完成学习周期的说明,您可以参考一下。
您好,附件为报告,你说的改成90%是指【Min PassedChg NiMH-LA 1st Qmax】要设置成90%吗?
Chemistry ID selection tool, rev=2.52 Configuration used in present fit: ProcessingType=2 NumCellSeries=1 ElapsedTimeColumn=0 VoltageColumn=1 CurrentColumn=2 TemperatureColumn=3 Best chemical ID : 400 Best chemical ID max. deviation, % : 7.42 Summary of all IDs with max. DOD deviation below 15% Chem ID max DOD error, % Max R deviation, ratio 400 7.42 1.17 445 11.68 0.49 461 13.84 0.61 435 14.6 0.75 6106 14.77 1.87 Max. deviations for best ID is within recommended range. Chosen best chemical ID is suitable for programming the gauge. Selection of best generic ID for ROM based devices like bq274xx Device / Family #1 Generic Chem ID Device/ Voltage/ Chemistry max DOD error, % 312 bq27421-G1B: 4.3V LiCoO2 15.74 354 bq27411-G1C: 4.35V LiCoO2 30.51 3142 bq27421-G1D: 4.4V LiCoO2 35.23 128 bq27421-G1A: 4.2V LiCoO2 45.93 Best generic ID 312 Warning: Generic ID Deviation is so high that it is most likely due to anomaly in the data. Please check that data files have recomended format, units and test schedule Device / Family #2 Generic Chem ID Device/ Voltage/ Chemistry max DOD error, % 354 bq27621: (ALT_CHEM2) 4.35V LiCoO2 30.51 1202 bq27621: (default) 4.2V LiCoO2 30.57 1210 bq27621: (ALT_CHEM1) 4.3V LiCoO2 33.89 Best generic ID 354 Warning: Generic ID Deviation is so high that it is most likely due to anomaly in the data. Please check that data files have recomended format, units and test schedule Device / Family #3 Generic Chem ID Device/ Voltage/ Chemistry max DOD error, % 3230 bq27426: (default) 4.35V LiCoO2 27.81 1202 bq27426: (ALT_CHEM1) 4.2V LiCoO2 30.57 3142 bq27426: (ALT-CHEM2) 4.4V LiCoO2 35.23 Best generic ID 3230 Warning: Generic ID Deviation is so high that it is most likely due to anomaly in the data. Please check that data files have recomended format, units and test schedule Warning: voltage in V detected divider changed to 1
您好 我今天早上重新充满,然后静置了几个小时。刚看了下,[FC]和 [VOK]还是1, [OCVTAKEEN]还是0,但是update status已经变成05了。请问下这个又是什么原因?都没达到规格书的变化条件,怎么更新了?
好的收到您的问题,已跟进给工程师。
请问您是否方便提供以下信息:
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选择的chem ID 具有相当高的误差,低于 5% 算是正常,理想情况是低于 3%。 LFP 电池由于电压特性更难测量地准确。