So, I understand that a 3Cell LiPo battery can output 12.6V when fully charged and that the cells must remain balanced to guard against Fire/Explosions/and general bad stuff happening.
However, each cell can only store a maximum of 4.6V. These Cells are then connected in Series to produce the 12.6V.
Is it possible to Charge a 12.6V LiPo from a 5V (or 4.6V) supply using a circuit that resembles something like the one below:
I understand that the ground plane on the charging circuit would have to isolated from the ground plane of the battery.
The MicroController would just cycle through the 3 cells charging one of them at a time. Some feedback loop to 3 Analogue inputs on the same microcontroller could monitor the current voltage of each cell and ensure that more time in the cycle is provided to the cells that are lagging behind until they are again balanced.
Would this work?
Any thoughts and suggestions would be MUCH appreciated. If any circuits like these exist already it would also be super helpful if you could point me at them.