"So apart from standing out in the roaring forties which makes iugkyjtfrxtfghj what are you saying.
Be that as it may it begs the question WHY?
??
Persons who have attained the level of 'listen to" still have to explain what and why they are doing, remembering that many readers are just new comers to all of this renewable energy stuff.
Do not say I am so great that you should believe me, document why!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! "
The explain part goes like this:
1. 40 batteries ... because over here we work with what we have. his bloke has gotten 40 batteries from somewhere, and wants to hook em up.... so we work with that 40 batts.
2. Knowing 1., we then need to wire them up as best we can. In this case I think that it would be best if every cell had equal access to the load and the supply.
3. If we parallel things, all those things in parallel will see the same emf.
4. If we series things, all those things in series will see the same current ... in or out.
5. A cell plate pair is the most basic of the redox reaction devices in the unit. They are arranged into groups within physical containers called batteries. But ......the cells in each battery can share more surface area for more current carrying capability.
To this end, they arrange more plates in parallel within a cell structure. Each plate adds to the surface area of the plate beside it, and we can go on doing this until we build a very big cell.... which when we add more cells to it, becomes a very big battery.
Note, all additional plates added into a cell are paralleled. They do not series string the plates from each cell and join them at the + and- posts.
They could if they chose to, but build convenience, and equal emf distribution across the entire surface area of the lead is best served by paralleling them into a single cell, and then series the cells into a battery
6. If it's good practice to build batteries where at even the plate level we parallel the outputs, then we can follow this outside of the physical battery, into our battery bank.... all the same rules apply
.... and they are:
A. All cells supposed to be at the same emf, should be paralleled, so all cells at that emf behave as a single cell, just as in a battery cell made from numbers of plates.....They parallel the plates to make a bigger cell .... in our upcoming example there will be about 100 plates paralleled to make each effective cell... but the nearest we can get physically to them is at the battery level (every 6 series cells for 12v),,, so the 12v battery will be made from 6 x 100 plate cells. That makes for a very big 12v battery. Yes there will be variances within the battery /s that we can't do anything about, but hopefully they are matched well enough to keep the differences down (more hope than belief)... at least the terminal voltage will be the same.
B. Once A is achieved, simply string the new super battery in series to make your bank the EMF you want.
So that is how and why I chose to do this. If battery manufacture could produce a better battery by making the individual plates isolated, (messsy maybe) then the best manufacturers would do it.... but they dont.
On a more theoretical rather than follow the battery makers lead, then I would point to Chris's remarks, where he has tested extensively for cell differentiation on a regular basis, and this shows that series strings of batteries parallel with other series strings go out of kilter.
It is thought that equalising is the answer to this, and that may be true with wet cells.... but with gell cells (we will be using these apparently next week) it is less likely that equalisation is particularly safe.
Boiling wet cells to use up allow the current to make H2 and O2 in the fully charged cells, and then allowing any non-charged series cells to catch up by using series current to reverse the redox reaction, is only good if you can replace the water. If you overdo it with gell types, it can be sad, as the gas will escape past the valves, and not be available for re-assimilation into the matrix..... they dry out.
So the best we can hope for is to fix all same level EMF batteries to the SAME EMF, and hope this mitigates to some extent the variability of unbalanced series strings. You can see that particularly for gels, it is necessary to not let some cells get too far ahead of the rest.
The unbalance within the battery may make this less than satisfactory, but it's the best we can get without using independent 2v cells where we can balance the lot.
Does that help at all?
And some of us southerners will wonder at the translation of this iugkyjtfrxtfghj ..... I figure it is some sort of jungle speak after the bar is closed for the night.
....................oztules
