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BQ76940: BQ76940均衡时 cell5、cell6、cell11偶发采样电压偏高

Part Number:BQ76940

BQ76940均衡时 cell5、cell6、cell11偶发采样电压偏高,参考文章中提到“Keeping the common path resistance low, using wide traces or returning the current as close to the cell as possible will reduce this effect”如何处理。

Star Xu:

您好,上面的建议是修改layout改善。

您可以参考下面的内容:

The cell measurement does not take place during balancing, but the voltage can take time to settle for cell measurements depending on the input filter component values (Rc and Cc). An example waveform can be found in Figure 5 of this app note: www.ti.com/…/slua775.pdfIf filter settling is the issue, I do not think you can solve this without modifying the hardware. If the voltage variation is small, maybe you could turn off balancing when you are getting close to the OV voltage – one idea for software modification.

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