Thanks for reading this post! I really want to get better at understanding electronics, so I want to build projects like these, but I am not 100% confident enough to just go ahead and build it. That is why I am looking for someone who would like to help me validating the idea I came up with. I made an amateuristic, but visually clear overview of my idea which can be found here.
So I want to build a solar charger capable of charging 5v devices like my Samsung galaxy s6 or other phones and powerbanks. I want to be able to charge in full sun but also when it is overcast. I like it to have a li-ion battery so it also makes use of the sun when no device is connected. It would be a nice bonus if I could also charge the battery separately with micro usb.
For the solar panels I thought using two 5V,max1A panels in parallel would be sufficient to charge in the sun and overcast. This does mean that the voltage of the panels is not always 5V because this depends on the amount of sunlight. To be able to safely charge the li-ion I thought of using TP4056 board (I will not use the microUSB but the + & - terminals). As li-ion this one should do the trick.
To make the link from the battery to the phone/powerbank I thought this board would be perfect. I think I can use it to charge my devices as well as charge the battery with protections at another moment if I wanted to via micro usb.
Now I have a few questions about this setup:
1 Would this setup work as intended and be safe to use? If not what should I do differently?
2 Is it possible to charge a phone and still let the solar panels charge the battery or is it better to implement a switch to stop the panels when charging a phone?
3 It feels like the two battery charges will be conflicting, is this true?
I would really appreciate any help on this project! Thanks in advance!
So I want to build a solar charger capable of charging 5v devices like my Samsung galaxy s6 or other phones and powerbanks. I want to be able to charge in full sun but also when it is overcast. I like it to have a li-ion battery so it also makes use of the sun when no device is connected. It would be a nice bonus if I could also charge the battery separately with micro usb.
For the solar panels I thought using two 5V,max1A panels in parallel would be sufficient to charge in the sun and overcast. This does mean that the voltage of the panels is not always 5V because this depends on the amount of sunlight. To be able to safely charge the li-ion I thought of using TP4056 board (I will not use the microUSB but the + & - terminals). As li-ion this one should do the trick.
To make the link from the battery to the phone/powerbank I thought this board would be perfect. I think I can use it to charge my devices as well as charge the battery with protections at another moment if I wanted to via micro usb.
Now I have a few questions about this setup:
1 Would this setup work as intended and be safe to use? If not what should I do differently?
2 Is it possible to charge a phone and still let the solar panels charge the battery or is it better to implement a switch to stop the panels when charging a phone?
3 It feels like the two battery charges will be conflicting, is this true?
I would really appreciate any help on this project! Thanks in advance!