This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BQ28z610低温优化问题

Other Parts Discussed in Thread: GPCRB

大家好,请教下。我按手册的要求做了ChemID的选择。得到的反馈如下:

Chemistry ID selection tool, rev=2.48

Configuration used in present fit:
ProcessingType=2
NumCellSeries=2
ElapsedTimeColumn=0
VoltageColumn=1
TemperatureColumn=2
CurrentColumn=3

Best chemical ID : 133 Best chemical ID max. deviation, % : 1.01

然后使用常温的充放电数据和低温的放电数据,提交到TI做了温度优化,返回了正常的数据:

Resistance temperature compensation optimizer, rev=3.41

Optimized Impedance Track parameters:

Qmax, mAh : 3817

Ra table normalized to 25C, uncompressed, unscaled

DOD, % Ra, mOhm

0 55
11.11 55
22.22 66
33.33 80
44.44 65
55.56 63
66.67 65
77.78 55
80.95 61
84.13 67
87.3 69
90.48 69
93.65 77
96.83 171
100 219

Ra0_ch, mOhm : 235 This firmware is not explicitly supporting Ra0_ch, FCC drop could occur at low temperatures if used

Thermal parameters:

Temp a 28
Temp k 0.26

Optimized resistance temperature compensation parameters saved in chemdat12


All GG values updated and saved in gg_out.csv

然后烧如返回的ChemID,再烧入反馈的gg_out.csv。

在低温(-15℃)下又做了一次放电确认。结果放电到13%的时候电量突然变为0了。曲线如下图所示,请教一下大家,可能是什么问题呢?