Building a Nichrome Heating Element Circuit: Safety Measures, Battery Type, and Temperature Control

Dear Reader!
I have a few questions about electronics. Before I begin, just a short disclaimer: I don't know that much about electronics (just the basics) but I still want to try it. I don't want to do something wrong, so this is why I want to ask, and for safety reasons, I also have a fire extinguisher right next to my desk. I want to make a circuit with a heating element (nichrome). Here are the specifications: the heating element should get 350 degrees Celsius but only for a short period of time (just like 3-5 seconds and like 150 times a day and that like 5 days a week, etc.). It also should have two buttons for safety reasons, so that nobody just accidentally triggers it (and of course also a charging module). My questions are now: Is this even possible? What battery type should I use (I thought maybe LiFePO4 or a normal Li-ion battery)? Should I build a temperature sensor inside so that if it reaches more than 370 degrees Celsius or etc. that it stops powering the circuit until the temperature is again under a specific temperature (for the schematics look down below)? And the last one, what did I forget when I thought about this? Just one last thing, if it's possible if someone can show me the steps on how to calculate this, so if I want to change something that I can easily change it. Thank you so much.

Nox1381 wrote:

what did I forget when I thought about this

First: size and power of heating element.

Nox1381 wrote:

Should I build a temperature sensor inside so that if it reaches more than 370 degrees Celsius or etc. that it stops powering the circuit until the temperature is again under a specific temperature

Yes, it's good practice.
Are you making some vape equipment?

jarekgol wrote:

First: size and power of heating element

Ok there is my first question because I have thick and small nichrome wire, what is going to be better?

jarekgol wrote:

Yes, it's good practice. Are you making some vape equipment?

Ok that is good that it works and yes I want to do something like this as a prototype.

You must do some experiments with wire, then you should measure voltage and current needed for achieving good temperature / evaporation. Then you can design your control circuit.
Probably it will be hard to measure temperature of wire and making thermal protection, but you can try stabilize current. Also you should search for info about this on other websites, vape related.