Part Number: BQ40Z50-R1
From your next post, I see you already know to use FET control command to turn on the FET for charging. I think this is probably the reason why you do not see charge current here.
Please also be noted that your Set Threshold for FD is way to high, please set this low to below or equal to 3000mV, this is the typical setting for this parameter
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In reply to Steven Yao:
Thanks for the reply.i will check it.
In reply to Divya UK:
I was checking but its not working,please send a proper settings for charging and discharging.i was attached a gg files for your reference.
In reply to vishwaradhya G:
The latest version for bq40z50 is R3.08, I get charging and discharging enabled base on default setting for V3.08. Please give me your email so that I can send the srec and gg file to you. But you still need to configure other parameters per your customer requirement and battery specs, the battery modeling parameters should also be configured appropriately by selecting proper chemical ID and doing the learning cycle.please refer the bq40z50TRM for further detailed steps
Thanks for your reply steven, here is my email id. for my testing purpose i using only single cell icr18650-26f, after successful learning cycle of this single cell,later am testing 2s-2p configaration cell.
what is pre-charging in this section,i should use pchg-fet in gauging,it is necessary, i am bit confusing with charging fet and pre charging fet section during settings.
The gauge enters PRECHARGE mode if,1. Min cell voltage1..4 < Precharge Start Voltage OR2. Max cell voltage1..4 < Charging Voltage Low – Charging Voltage Hysteresis and not in CHARGEmodeDepending on the FET Options[PCHG_COMM] settings, the external precharge FET or CHG FET can beused in PRECHARGE mode. Setting Precharge Start Voltage and Charging Voltage Low = 0 mVdisables the precharge function.
[PCHG_COMM] = 0 [PCHG_COMM] = 1FET USED: external precharge FET FET USED: CHG FET
The bq40z50-R2 device also supports 0-V charging using either an external precharge FET or CHG FET.If [PCHG_COMM] = 1, the gauge enables the hardware 0-V charging circuit automatically when thebattery stack voltage is below the minimum operation voltage of the device (see the bq40z50-R2 1-Seriesto 4-Series Li-Ion Battery Pack Manager data sheet [SLUSCS4] for bq40z50-R2 electrical specifications).
what u given srec file i uploded to bqstudio,it is started charging,am started the learnig cycle,the first step of discharging takes 1 hour and reset bit and rdis bits are set and again i started the next step of learning cycle means charging of cells to full it taking 4-5 hours for charging i think this process is reversed,as i read TRM charging takes 2 hours and discharging takes 5 hours.what i gone wrong please suggest me.
ra tables uptading in charging mode,it is updated in discharge mode am i right?
Is thier any options for setting capacity ratings for charging and discharging in bqstudio.
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