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BQ27Z561: GAS GAUGE

Part Number: BQ27Z561
Other Parts Discussed in Thread: BQ28Z610, BQ40Z50

This is Allen Hu from ShenZhen ADDX (深圳积加创新技术有限公司),I have a couple of concerns for the impedance track feature of the gas gauge(ie BQ27z561),The details are shown as following:

-What about the measurement accuracy;

-what we can do by implementing "impedance track",if it possible to achieve the following feature,

  a.improve the accuracy of SOC & SOH during the whole life cycle.

  b.Keep tracking the impedance difference during discharging and charging mode so that the abnormal situation can be detected on time.

 c.if item#b is doable ,what about the minimum interval timing of capturing the impedance from MCU side.

I just want to talk about if possible to achieve the alarm function to avoid thermorunaway accident once the impedance difference over the spec.

as above,looking forward to your feedback.

 

 

Thanks

Allen