I'm currently working on an electronic design which has a high risk of being exposed to temperatures up to 500°C and possibly more.
The specifications indicate that once the product is exposed to more than 80°C it needs to be replaced by a new one, so the electronics don't need to be qualified over typical industrial range temperatures.
I still have a problem with the energy source. I don't have big hopes that the client will let me design a system with a wireless charger linked to the standard power network, so I need to come up with ideas about batteries that will not explode when exposed to fire.
I need 2.5V or more, for 1 Ah.
Do batteries which won't explode exist/are currently publicly available or should I ask for help about thermal isolation to slow down the temperature rise for hours?
My electronic device is supposed to sense different parameters (like pressure, shocks,...) and log data locally to be gathered regularly through NFC. For the enclosure, I could say based on the mechanical model I got 50x100x100 mm. Expected operating time is 6 months.