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BQ76952: Inquiry Regarding Battery Pack Design Block Diagram

Oussama Dallali
Prodigy 70 points
Part Number: BQ76952
Other Parts Discussed in Thread: BQ76972, CC2662R-Q1

Dear TI Team,

I am Oussama Dallali, an Electronics Systems Engineer from Starz Electronics. We are currently in the process of developing our own battery packs using wirless system controll, and as part of this endeavor, we are seeking assistance in verifying and optimizing our block diagram to ensure it aligns with our objectives.

Our plan involves implementing a master board with wireless communication capabilities using the CC2662RQ1 chipset, along with a slave board utilizing the BQ76952 and CC2662RQ1 components.

We kindly request your expertise to provide additional information and clarification regarding the block diagram. Specifically, we would like to know:

  1. Whether the proposed block diagram adequately fulfils our objectives?
  2. The maximum number of slave boards (Node) that can be controlled using one single master?
  3. Any additional insights or recommendations that could aid us in our design process?

Your assistance and guidance in this matter would be greatly appreciated, as it will contribute significantly to the success of our project.

Thank you very much for your support.

Best regards,

Oussama Dallali

 Electronics Systems Engineer Starz Electronics

  

  • 0
    TI__Mastermind 42060 points

    Hello Oussama,

    For the BQ76952 device, this seems like it would be okay. From the perspective of the BQ76952, it just requires to communicate with the MCU to provide the data and to configure the device (if the IC is not OTP'd). You could also use the microcontroller to control the BQ76952.

    There is also a higher accuracy version of this device, this is the BQ76972, this device has offset calibration factors for LFP cells to achieve a 1.8-mV accuracy at room temperature. See the datasheet for more details.

    I am not an expert on the CC2662R-Q1 device myself, but will loop in the team that is in charge of it to provide their feedback, on the questions.

    Best Regards,

    Luis Hernandez Salomon

  • 0
    TI__Intellectual 2570 points

    Hi Oussama,

    1. For WBMS, currently we only support BQ797xx and BQ796xx

    2. Depends on how frequently the slave boards need to communicate with the master board. The bigger network size, the less frequency can achieve