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BQ27411-G1: Can bq27411G1A be used to be a gauge for two parallel connecting battery ?

Lu Feiyue
Intellectual 660 points
Part Number: BQ27411-G1
Other Parts Discussed in Thread: GPCCHEM

I want  to  design  a gauge  for  two parallel connecting  battery,  Is  bq27411G1A  the  right  selection?  

  • 0
    TI__Guru* 76230 points

    Hi Feiyue,

    There are a variety of options to choose from. 

    -Is your battery  system or pack side? Are they going to be detachable?

    -How much accuracy is expected from the gauge?  

    -Will your cells experience periods of relaxation or will the cells be continuosly cycled? 

    -What is the capacity of the two cells in parallel?

    -Is protection a feature that is needed for the cells?

    -What kind of application is your end product?

    thanks

    Onyx

  • 0 in reply to Onyx Ahiakwo
    Intellectual 660 points

    The chip was selected by my  colleague. And I think it  can  satisfy our  requirements.

    All  I  need  to do is  to  carry out a  learning cycle.But  I don't  know  if  bq27411   can  apply to two  parallel connecting battery.

    I  notice that  bq274411 is   a  Single-Cell Li-Ion Battery Fuel Gauge.

    what   does  the  word " Single-Cell" mean?

    a  gauge  for  only one  battery  ?   or   the number of Series Cells  is one and  parallel connecting cells is acceptable?

    My  gauge resides in pack side.

    And  the  accuracy of bq27411 is acceptable.

    And I have protecting circiut using other chips

    The capacity of the two cells in parallel  is  about 4.4A.h,each of  cell is about  2200mA.h.

  • 0 in reply to Lu Feiyue
    TI__Guru* 76230 points
    Hi Feiyue,
    I would recommend using our tool gpcchem to determine if the chem ids hardcoded in the bq27411 would be a match for your cells. If it isn't then i would recommend you use one of our packside gage like the bq27542 which would allow you program any chem id that is a match for your cells.

    Since cells means one cell in series. The gauge can handle multiple cells in parallel.

    thanks
    Onyx
  • 0 in reply to Onyx Ahiakwo
    Intellectual 660 points
    You mean that I can not program chem id for bq27411G1A ,?
  • 0 in reply to Lu Feiyue
    TI__Guru* 76230 points
    no you cannot.