Water Level System Project Page 1

Here's an update; I put the reservoir on the cell itself to keep tubing to a minimum and to reduce electrolyte level changes. I added a gas output to equalize pressure inside the reservoir so electrolyte doesn't get pushed into the water tank. I also aded a 1 way valve for the same reason.

There'S a pump that operates off the level sensor so hopefully this would keep all the cells topped up properly. I'm still not sure about current leakage especially now since the tubes are shorter...I guess it depends which path has the least resistance.

Also, the location where the fill needles go in is pretty tight. It might be hard to use stainless needleS without shorting the plates. Maybe PVC..

OK, here's an idea... This is something I thought of for filling all 7 cells at one time and keeping them level.

It's based on the Tero style "clamped" cell and uses a sort of water level system for keeping things equal. A water level is used in construction and uses a long tube filled with water that has 2 open ends. One end is set with the water at the desired level while the other can be taken around corners, etc and will "read" the exact same level as the first.

The cell has seperate tubes that run from each plate capacity to a remote reservoir. If current takes the path of least resistance, maybe it will go throught the plates rather than all the way down the tube and back again.

Anyway, like a water level, you would mount the reservoir at the desired level and the plate areas would all rise to the same level automatically. It would be relatively easy to put a level sensor in the one reservoir rather than all the seperate plates.

PROS:

- 1 easy fill location - 1 sensor
- all plates kept level automatically
- reservoir can be housed in water tank

CONS / POSSIBLE CONS:

- multiple tubes add to possible leak locations
- system may be more suited to stationary applications - If the reservoir was moved vertically, it would affect the level in the cells - possibly leaking into the gas tube
- gas pressure may push electrolyte back into reservoir. This could possibly be avoided by running the gas output into the top of the reservoir to equalize the pressure, then onto a bubbler