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BQ34Z110: Need its C driver file (bq34z110.c/.h) files

Vikas kumar Verma94
Prodigy 140 points
Part Number: BQ34Z110
Other Parts Discussed in Thread: BQ27XXXSW-LINUX

Hi !

I am using this device for development of lead acid 48V@68Ah Battery Bank monitoring system. I have three questions,

1- from where can I find its .c/.h C driver file.

2- Can we connect four bq34Z110 with each 12V Lead cell connected in series to form 48V Pack Voltage. Can you suggest its connection with 4X12V bank.

3-  In order to reduce of I2C buses required by each bq34Z110 , can we use the one I2C bus with CE signal for selecting and deselecting each bq34Z110.

Thanks and Best Regards,

VK Verma

 

  • 0
    TI__Guru** 105590 points

    Hello VK,

    The bq34z110 is a top of stack gauge so you shouldn't need to have multiple gauges for each battery.

    There are no drivers available for the bq34z110, you may be able to find more information from others on the forum. Or use the following for reference:

    www.ti.com/.../slua801

    www.ti.com/.../BQ27XXXSW-LINUX

    I2C works by addressing on the same bus, unfortunately the bq34z110 doesn't support an address change, but you can use communication multiplexing. 

    www.ti.com/.../TCA9544A

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Prodigy 140 points

    Hi Keller,

    Thanks for your instant reply !

    Actually we are using Four Lead acid batteries connected in series to form 48V bank and we need to measure SoC and SoH of each battery inside the this 48V bank. This will help us to predict faulty battery inside bank timely.

    As per circuit suggested inside datasheet for one battery, and if i apply the same for four batteries in series then what will be connection scheme for VBAT_Sense pin and SRP,SRN pins, and will BQ34Z110 be able to measure all battery parameters to provide SoC and SoH accurately. 

    Regards,

    VK Verma

  • 0 in reply to Wyatt Keller
    Prodigy 140 points

    DL2020-19B201122-0-CKT-2412201801.pdfHi Keller !

    I have attached the circuit here to give you better idea about how this device is going to be used.

    Please indicate if I have mistaken somewhere.( refer my last post for description)

    Also I am unable to find any link for  Linux Driver BQ27XXXSW-LINUX from where I can download it.

    Please advice if there is any other link is there.

    Regards,

    VK Verma

  • 0 in reply to Vikas kumar Verma94
    TI__Guru** 105590 points

    Hello Vikas,

    It looks like you don't have the gauges stacked, so each gauge would be measuring the SOH of the batteries that are in series. Are you going to use that information then to calculate each batteries SOH with an MCU?

    All the source files are on the page linked, they won't work directly with the bq34z110 but it can be referenced if needed.

    Sincerely,

    Wyatt Keller