BQ27320: How to calculate cycle threshold for cyclecount judgment?

Tiger Yeh

Part Number: BQ27320

Tool/software:

Hi,

May I know how to get cycle threshold?

According to TRM, the cycle threshold is Cycle Count Percentage (default 90%) x [CEDV Gauging Configuration= 182Ah when CCT=1 or Design Capacity= 6900mAh when CCT=0]

It looks the CCT=0 based on "CEDV Gauging Configuration= 182Ah", whether the cycle threshold is 0.9 * 6900mAH= 6210mAh?

So the cyclecount is +1 if the discharge over 6210mAh, am I right?

Thanks and Best regards,

Tiger

10 months ago

0 Jose Couso 10 months ago

TI__Mastermind 27321 points

Hello Tiger,

If CCT = 1:
Cycle count threshold = Cycle Count Percentage * FCC

else:
Cycle count threshold = Cycle Count Percentage * Design Capacity

0 Tiger Yeh 10 months ago in reply to Jose Couso

TI__Expert 5445 points

Thanks Jose.

As I mentioned, CEDV Gauging Configuration= 182Ah, so CCT is "0b"

Thus, I believe my calculation "cycle threshold is 0.9 * 6900mAH= 6210mAh" is correct.

Best regards,

Tiger

+1 Jose Couso 10 months ago in reply to Tiger Yeh

TI__Mastermind 27321 points

Correct. It means when 90% of passed charge of the FCC has been met, cycle count will increase.

0 Tiger Yeh 10 months ago in reply to Jose Couso

TI__Expert 5445 points

Thanks Jose.

Have a nice day.

Best regards,

Tiger

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BQ27320: How to calculate cycle threshold for cyclecount judgment?