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WEBENCH® Tools: Battery Managemnet System

Other Parts Discussed in Thread: TIDA-00792, BQ76930, BQ78350-R1, BQ76940, BQ34110, BQ34Z100-G1

Tool/software: WEBENCH® Design Tools

Hi,

As per the application we want to have a battery management system for our devices. The battery input will not more than 36v, 10Amp.

In application, we want when the battery comes to a lower level it indicates the same. and we get the indication for the battery level. so we start charging at the certain level. So can u please help in this. We are using lithium-ferrous phosphate battery for the same.

Is there any module which is available for it. Or we have any Application circuit we can work upon

 

  • Hi Divyanshu,

    For this type of system, I recommend looking at the TI Reference designs below. These use the BQ76940 (in your case you may be able to use the BQ76930 which is the 10s version of the same device). TIDA-00792 also uses the BQ78350-R1 controller which includes accurate battery gauging.

    http://www.ti.com/tool/TIDA-00449 

    http://www.ti.com/tool/TIDA-00792

    Best regards,

    Matt

  • Dear 

    Actually, we are using lead ferrous phosphate batteries. So is there any way out we can predict the charge for such batteries using your solution for the same. 

    If it can not be done what will be the advantages with us for using series cell type batteries in this. I can't figure out the exact way to what type of batteries should I go with..

  • Divyanshu,

    I assume you mean lithium ferrous phospate (instead of lead)? For LiFePO2 cells, the reference designs I listed will work. However, this would not be the right solution for lead-acid batteries. For lead-acid, you would want to look at the BQ34Z100-G1 or the BQ34110.

    I'm sorry, I cannot help to select the best battery type for your application since I am not familiar with your system. Different battery chemistries have different advantages. This web site is a great resource for learning about different battery types and topologies: https://batteryuniversity.com/index.php/learn/

    Best regards,

    Matt