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BQ40Z50-R1 lifetime中记录电压最大超过6V,最低电压到0V

电池是3串的,单节电压4.35V,电池使用中出现lifetime中最高电压到6V,最低电压为0V的情况,并显示有shutdown记录,请问是何原因导致。

Star Xu:

您好,您可以看一下blackbox的记录,看一下芯片进入哪些保护,查一下做过哪些测试

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kevin sun:

blackbox里面的值都是0,没有记录数据

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kevin sun:

Lifetimes Voltage Cell 1 Max Voltage 5628 mV
Lifetimes Voltage Cell 2 Max Voltage 6030 mV
Lifetimes Voltage Cell 3 Max Voltage 6067 mV
Lifetimes Voltage Cell 4 Max Voltage 0 mV
Lifetimes Voltage Cell 1 Min Voltage 128 mV
Lifetimes Voltage Cell 2 Min Voltage 0 mV
Lifetimes Voltage Cell 3 Min Voltage 3 mV
Lifetimes Voltage Cell 4 Min Voltage 0 mV
Lifetimes Voltage Max Delta Cell Voltage 6067 mV
Lifetimes Current Max Charge Current 3017 mA
Lifetimes Current Max Discharge Current -19381 mA
Lifetimes Current Max Avg Dsg Current -10000 mA
Lifetimes Current Max Avg Dsg Power -11270 cW
Lifetimes Temperature Max Temp Cell 54 掳C
Lifetimes Temperature Min Temp Cell 10 掳C
Lifetimes Temperature Max Delta Cell Temp 0 掳C
Lifetimes Temperature Max Temp Int Sensor 55 掳C
Lifetimes Temperature Min Temp Int Sensor 10 掳C
Lifetimes Temperature Max Temp Fet 0 掳C
Lifetimes Safety Events No Of COV Events 7 events
Lifetimes Safety Events Last COV Event 6 cycles
Lifetimes Safety Events No Of CUV Events 5 events
Lifetimes Safety Events Last CUV Event 6 cycles
Lifetimes Safety Events No Of OCD1 Events 0 events
Lifetimes Safety Events Last OCD1 Event 0 cycles
Lifetimes Safety Events No Of OCD2 Events 0 events
Lifetimes Safety Events Last OCD2 Event 0 cycles
Lifetimes Safety Events No Of OCC1 Events 0 events
Lifetimes Safety Events Last OCC1 Event 0 cycles
Lifetimes Safety Events No Of OCC2 Events 0 events
Lifetimes Safety Events Last OCC2 Event 0 cycles
Lifetimes Safety Events No Of AOLD Events 0 events
Lifetimes Safety Events Last AOLD Event 0 cycles
Lifetimes Safety Events No Of ASCD Events 0 events
Lifetimes Safety Events Last ASCD Event 0 cycles
Lifetimes Safety Events No Of ASCC Events 0 events
Lifetimes Safety Events Last ASCC Event 0 cycles
Lifetimes Safety Events No Of OTC Events 0 events
Lifetimes Safety Events Last OTC Event 0 cycles
Lifetimes Safety Events No Of OTD Events 0 events
Lifetimes Safety Events Last OTD Event 0 cycles
Lifetimes Safety Events No Of OTF Events 0 events
Lifetimes Safety Events Last OTF Event 0 cycles
Lifetimes Charging Events No Valid Charge Term 0 events
Lifetimes Charging Events Last Valid Charge Term 0 cycles
Lifetimes Gauging Events No Of Qmax Updates 1 events
Lifetimes Gauging Events Last Qmax Update 2 cycles
Lifetimes Gauging Events No Of Ra Updates 38 events
Lifetimes Gauging Events Last Ra Update 5 cycles
Lifetimes Gauging Events No Of Ra Disable 9 events
Lifetimes Gauging Events Last Ra Disable 6 cycles
Lifetimes Power Events No Of Shutdowns 4 events
Lifetimes Cell Balancing Cb Time Cell 1 0 h
Lifetimes Cell Balancing Cb Time Cell 2 0 h
Lifetimes Cell Balancing Cb Time Cell 3 0 h
Lifetimes Cell Balancing Cb Time Cell 4 0 h
Lifetimes Time Total Fw Runtime 560 h
Lifetimes Time Time Spent In UT 0 h
Lifetimes Time Time Spent In LT 0 h
Lifetimes Time Time Spent In STL 0 h
Lifetimes Time Time Spent In RT 544 h
Lifetimes Time Time Spent In STH 8 h
Lifetimes Time Time Spent In HT 0 h
Lifetimes Time Time Spent In OT 0 h

这个是lifetimes里面记录的数据

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kevin sun:

请帮忙确认下lifetimes记录的数据反映的是电池什么问题。

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Star Xu:

您好,lifetime 记录看出COV,CUV和shuutdown保护。
Lifetimes Safety Events No Of COV Events 7 events
Lifetimes Safety Events Last COV Event 6 cycles
Lifetimes Safety Events No Of CUV Events 5 events
Lifetimes Safety Events Last CUV Event 6 cycles
Lifetimes Power Events No Of Shutdowns 4 events

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kevin sun:

Lifetimes Voltage Cell 1 Max Voltage 5628 mVLifetimes Voltage Cell 2 Max Voltage 6030 mVLifetimes Voltage Cell 3 Max Voltage 6067 mVLifetimes Voltage Cell 4 Max Voltage 0 mVLifetimes Voltage Cell 1 Min Voltage 128 mVLifetimes Voltage Cell 2 Min Voltage 0 mVLifetimes Voltage Cell 3 Min Voltage 3 mVLifetimes Voltage Cell 4 Min Voltage 0 mV

想确认下记录的电压值是否准确,正常电池怎么电压会这样?是电芯异常吗?

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