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10A 1S BMS circuit
19/07/2023 | Views: 29837 | Circuits | by: ELECTRONOOBS      

I want a battery protection charger such as the TP4056 module but with a way higher current output than only 2A. You see, these 18650 batteries which are lithium ion batteries of 4.2V, they could easily deliver more than 10 amps of current. But when used with a protection charger module like the one based on the TP4056, the current output is limited at 2 amps which is not enough for a lot of my projects. And what if I want to use two batteries in series and I still want to charge them using a USB connector? That’s another problem. So in this video I will study what options we have to get a USB charger, battery protection but also a decent current output at the same time. I will show you different modules, BMSs, chargers and what NOT to do. So guys, let’s get started.

Part 1 - Schematic

I finally made this schematic below. I’ve passed to PCB and made the final design. I haven’t received the boards yet but you could use this design if you want. The links for the GERBERs files are below. I don’t know why I can’t find such a design online already. It seems like such a good idea, right? To make the test, I connect the TP4056 module with USB input to the 1S BMS. The battery is connected at the B+ and - pins and the load is connected between the B+ pin and the C - pin. Th e charger is connected in parallel with the load. Like this we can charge the battery with a 5V USB connector but also protect the battery.

19/06/2023 | Views: 29837 | Circuits | by: ELECTRONOOBS      

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