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BQ34z110 with 4 Lead Acid batteries in series

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Hi, I'm having some doubts about data flash configuration before starting STEP 7 & 8 of SLUSB55B.

My current setup is 4 Lead Acid batteries in series and I want to monitor the 4 batteries with a single IC, expecting to read the data of the whole bank and not of each single battery.

Each battery is rated 12V 17Ah (Brand Vision, model CP12170), so after connect them in series I have a 48V total voltage and 17Ah theorical bank capacity. Each battery has 6 cells of 2V each one.

This are the parameters I've changed:

  • Number of series cell: 6*4 = 24
  • Design cell capacity: 17000/6 = 2833 mAh
  • Design cell energy: 2833 * 2 = 5666 mWh
  • Fc Set: -1
  • Cell charge Voltage Tx-Tx: 55V/4 batteries = 13.75 V/Battery -> 13.75/6 = 2292 mV/cell
  • Cell termination VOltage: 1000mV (So it doesn't affect calibration. After this process it will be 1833 mV)
  • Qmax Cell: 17000/6 = 2833 mAh
  • Chem ID: 0804
  • Voltage Divider: 60700mV

Is this configuration correct? Do I have to modifed any other parameter? If anyone need more information, please let me know

Many thanks in advance.

Regards,

Diego


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