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Charging Ion-Polymer batteries

Ram Tal
Intellectual 500 points
Other Parts Discussed in Thread: BQ24172, BQ500215, BQ51025

Hi,

In our application we want to recharge 2 LG G4 batteries which connected in series--> 7.6V, 3000mAH.

those batteries will power 6V motor for 200 seconds and then recharge for 10 minutes.

my question-

does TI have suitable transmitter, receiver for the application? 

I was given bq500215EVM and bq51025EVM rated with 10W power transfer. Are those EVM's capable of charging the batteries or do I have to add charger IC?

In addition, what is the relation between supplied wireless Watt and the capacity of the desirable charged battery?

for example, if my 30000mAH is now after discharge at 2000mAH. I'm applying the 10W wireless power at 7.5V output / 1.4A. what is charge rate?

Thanks in advance,

Ram

 

  • 0
    TI__Genius 14890 points

    Ram,

    The bq500215 + bq51025 is a good solution for your application.  You do need a charger.  Check out the bq24172 as the charger.  The bq51025 datasheet has a discussion in the application section for "Standalone 10-V Power Supply with 1-A Maximum Output Current for 2S Charging System". 

    The wireless power solution must supply enough power to charge the battery plus any efficiency loss in the charger system.

    Regards,

    Dick