Part Number:BQ40Z80Other Parts Discussed in Thread:EV2400, BQSTUDIO,
实验目的:电池组低温-30℃放电数据收集
实验设备:EV2400,SMBUS通信线缆约长70cm,bqstudio(版本号1.3.101)
实验过程:EV2400放置在温箱外部,降温过程中,全程记录数据。当显示温度-7℃时,上位机出现连接中断,重启也无法再次连接。(低温测试电池组放电,此现象必出现)
降温过程的数据和错误信息如下:
1588.Desktop.zip
电路板上有MCU与bq40z80可以正常通信,由485正常上传数据。截图如下:
这种情况,如何修复???
Star Xu:
您好,您的gg文件和电路发过来看一下。
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BobSun:
1325.gg.zip
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Star Xu:
您好,Is it possible to provide a logic analyzer output of the bus? The logs don't seem to indicate that anything would be wrong with the gauge, and the fact that communication was working makes me think that the schematic should be fine as well. Is your customer using the EVM? If not is it possible to replicate this behavior on the EVM?