New type of oxygen battery

[daisizhou]

The novel coronavirus pandemic,Many ventilators use oxygen cells.
A traditional oxygen cell is a chemical reaction that produces a voltage or current that is linearly proportional to the oxygen concentration.
But they all have a lifespan and need to be replaced after a while.
Below is the long life oxygen battery, I disassembled it, but the core I can't disassemble.Does anyone know how it works?
Or how to fix it, it is currently damaged and the fault is low oxygen concentration

[daisizhou]

The above one is different. It seems that the oxygen concentration is measured by attracting oxygen molecules by electromagnetic force. I don't understand the specifics.
The 2 round ones are the electromagnet coils.That's the difference

[jpanhalt]

A paramagnetic sensor: https://industrialphysics.com/knowledgebase/articles/paramagnetic-cells-technology-for-our-paramagnetic-o2-analyser/

Several manufacturers appear on a search.

[daisizhou]

it seems so.But the reality is complicated, the interior cannot be disassembled.
The white ceramic part in the picture above should be the core, I can't disassemble it

[daisizhou]

Under normal conditions, this oxygen battery life is almost permanent.This battery lasts 8 years.
There seems to be a big difference between the model and the real thing