I would like to build a battery charging system for a product. Could you suggest a battery management system solution?
The loading of this product consist of a DC motor (about 10 W) and a heater (about 240 W). The battery is Li-Po, 3S, about 4000mAh. Nominal discharge current is about 22.5A. Charge current is about 1.5A-2A. The battery will have its own protection circuit module (PCM). Charge power/current would be supplied by an external adapter.
As such a high loading current, the load current should not drain from the adapter, so it should be always drain from the battery. As such, I guess the management IC should be able to determine or control when to charge and discharge the battery. In the other words, when user switch on the product, it should discharge current from the battery to the load no matter the product is connected to the external adapter or not. When the product is switch of and connected to the adapter, it should charge the battery.
Could you suggest or help me to select a suitable battery management solution?
Thank you very much.