Hello! Now we will assemble a field generator based on Peltier cells, which will replace many spare batteries.
The use of home-made heat and power generators has been used for a long time. In 1943, a semiconductor thermoelectric generator in the form of a marching pot was built at the Leningrad Institute of Physics and Technology, its efficiency reached 2%, which made it possible to connect a field radio station to it.
With the advent of Peltier elements, it became possible to make the generator yourself.
For this we need:
1. Materials
radiator from computer
- two aluminum profiles
thermal paste
Peltier elements (2 pcs.) TEC1-12706
-increasing electric current converter (input. 2V)
wire
furniture bolts
2. Tools
metal knife
soldering iron
screwdriver
-drill
-hammer
-pliers
-screwdriver
1 step
Let's proceed to the assembly. From the beginning we bend the extreme plates of the cooling radiator and make 4 holes for fastening.
2 step
We cut two aluminum profiles for the heating radiator. The length and width of the profile is equal to the length and width of the radiator, in my case 100 * 100 mm.
(You can bend two aluminum corners 25 * 25 mm)
3 step
Between the radiators we place Peltier elements, having previously lubricated the places of contact with thermal paste for maximum contact. We tighten the entire structure in the corners with furniture bolts.
4 step
We connect the wires of the Peltier elements sequentially to each other. In our case, the Peltier element will generate a voltage of about 2 volts, this is not enough to charge the phone’s battery. Therefore, we will use a boost converter, which will increase and stabilize the output voltage to 5 V. We connect it in accordance with the markings on the boost converter. (You can use any boost converter, not necessarily like mine, the main thing is that it fits the characteristics)
Solder the plug that you need to the boost converter. You can also fill the boost converter with hot melt adhesive for tightness.
And the whole camp generator is ready, with which you can charge your phone or other gadget just by hanging it over a fire.