I just got an idea that I think will end all this Battery Management problems for Lithium cells, especially for those of us building the packs ourselves.
I will use 24v system inthisexample:
STEP 1: The controller will take supply from the PV
STEP 2: The MPPT system will step down the voltage to 4.1V while boosting the current.
STEP 3: The 4.1v busbar will have 7 (or 14 for 48v systems) +ve and-veoutputs.
STEP 4: Connect the terminals to individuals cell packs.
I will need your suggestions and inputs. I believe this is a far cheaper way to use lithium cells without bothering about balancing.
The first park that gets to 4.1v automatically stops charging. The cells with the highest voltage will charge slower while those with lower voltage will charge faster due to the varying potential difference.
I will use 24v system inthisexample:
STEP 1: The controller will take supply from the PV
STEP 2: The MPPT system will step down the voltage to 4.1V while boosting the current.
STEP 3: The 4.1v busbar will have 7 (or 14 for 48v systems) +ve and-veoutputs.
STEP 4: Connect the terminals to individuals cell packs.
I will need your suggestions and inputs. I believe this is a far cheaper way to use lithium cells without bothering about balancing.
The first park that gets to 4.1v automatically stops charging. The cells with the highest voltage will charge slower while those with lower voltage will charge faster due to the varying potential difference.