• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 63 subscribers
  • Views 606 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

float charging implementation

BALKRISHNA TULSYAN
Intellectual 850 points

Hi,

Is there a way to detect FLOAT charging without detecting current level.

As monitoring current for switching in to FLOAT  mode will very much depends on the AH size of the battery used for particular application and thus i have to change code again and again based on battery size requirement BUT my requirement is to implement this without this dependencies.

The steps i know to switch to float charging from CV MODE, as per my knowledge is as given below:

if (Bat_current > c/100)&&(CV_MODE_ON)

then continue to be in CV_MODE 

else FLOAT_CHARGING

Like wise can anyone suggest me an idea as how to switch to float charging based on voltage or current but independent to BATTERY AH SIZE ????

Thank you..!!

  • 0
    TI__Mastermind 25800 points
    Hey AMIT,

    Knowing the Battery Capacity is important to knowing how much you can charge the battery in CC mode. It also gives you can indication of how much capacity or your State of Charge (SoC) through Coulomb counting.

    Now, even in CV mode, the battery voltage will still increase, slowly because a proper charger will decrease the charge current in this mode. Many of our chargers have a fixed termination current threshold where charging stops.

    You can implement this same type of thinking, just monitor the battery voltage to make sure it does not surpass the max battery voltage.


    Regards,
    Joel H
  • 0 in reply to Joel Hernandez II
    Intellectual 850 points

    Thank you for posting your reply

    I have used logic as given below:->

    (1) Bulk charge (CC Mode) till the VBAT reaches 14.4 v

    (2) Enter into CV Mode after 14.4 v and continue till ICHRG drops to 1% Battery AH capacity

    (3) Enter and continue in Float mode (CHRG voltage reduces to 13.7 v) and stop charging if VBAT voltage crosses 15 v 

    Can you please verify whether this logic is correct??

    I will really appreciate your help.

    Thank you..!!

  • 0 in reply to BALKRISHNA TULSYAN
    TI__Mastermind 25800 points

    Hello AMIT,

    I should have asked this earlier, but what battery chemistry are you using?

    Li-ion, LiPo, Lead-Acid?

    Regards,,

    Joel H