Thermodynamic battery for energy storage

Bellow you can see the schematics (to big picture for this site limit) of a high pressure tank composed from cells distributed in layers. The cells are filled with air thru valves in such a manner so cells from one layer have the same pressure and the pressure from one layer is different from another layer (increasing from the internal layer to the external one. This model offers the possibility of storing very high pressures in safe conditions.
You can check the net to see that air cars travel 200 km with air stored on board at 300 bars. My model offers the possibility of compressing the air at 1000 bars and more.
For renewable energy storage systems this model of tank allows storing air at high pressure in underground or above ground tanks (for home use).
Advantages:

- it eliminates the necessity of using groups of expensive electrical accumulators with a short working life due to the reduced possible number of charging/discharging cycles (from 500 to 2000 but with the storing capacity reducing over time),
- by having the possibility to withstand tens of thousands charging/discharging cycles without any loss in storing capacity;
- at very high pressures compressed air has better energy densities / liter than conventional batteries.

So dear reader tell me what you think about this possibility?
Q&A received until now on other forums.

Q:
1. Does the increased pressure in the inner cells really make up for the increased size and weight of the overall structure associated with the outer cell layers?
2. Do you see the greater safety as resulting from the lower level of energy released if one cell fails compared to a single monolithic tank? If so, what happens if the failure of one cell results in over stressing adjacent cells?
3. I am not at all comfortable with a system whose safety depends on that large an array of individual valves and a control system which coordinates them. What sort of fail-safes in your design address these concerns? If one or more cells in a middle layer fail to pressurize properly, what is the effect on the inner layer cells associated with them?
4. How are the valves and pressure sensors in the inner layers tested and serviced?
A:
1. Increasing pressure = increasing wall thickness for usual tanks. In my patent the same weight is redistributed in inner cell walls, for safety. same weight of the tank but super safety. A bullet will cross the tank and will destroy few cells on his road and the rest of the cells will function with no problem. Inner cells have larger thickness walls.
2. Yes. The walls of the cells are calculated to resist the pressure difference between cell and worst case external pressure. Pcell=F/Scell, smaller S means at the same thickness higher pressure. I have a website explaining this. More on www.jopatent.com
3. If a valve or a group of valves fails only the corresponding cell are blocked the rest of the tank will function at a reduced capacity.
4. Big problem yes. For that reason the patent covers blocks of valves. More on jopatent. There are also constructive solutions for tanks made from block of cells that can be changed in case of failure.