Charging a LiPo battery with load

B

BlackBrrr

I have built my own BMS (Battery Monitoring System) that can control the SOH (State of Health) and SOC (State of Charge) of a LiPo battery. It can control every cell voltage (with passive cell balance), temperatures and current.

This BMS is powered by its LiPo battery and also gives supply to a Raspberry Pi (Control circuit) and gives supply to a load (Power circuit).

During the battery charge, I disconnect the power circuit. But the problem is that I don't want to disconnect the Raspberry Pi while it's charging because it does the cell balancing.

I want to buy a battery charger that gives me enough power and gives me the CC/CV curves too but doesn't do the cell balancing (my BMS does it). This charger lets me program this curve via USB.

Is it ok if I connect the charger to the battery directly with the Raspberry Pi connected? The charger has enough power for both, but I don't know if the CC/CV curve survives. Then:

1: Is the RaspberryPi a problem to the battery charger? (I can program the curve)

2: Is it a problem in general, for battery chargers, to charge a LiPo battery with a load attached?

3: What would be the best solution to this problem?

Thank you for your time.
 

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