T-Pain Is On A Boat: [Electric Boats] Re: Relays to replace a controller

Thursday, July 9, 2009

[Electric Boats] Re: Relays to replace a controller

--- In electricboats@yahoogroups.com, Hans Kloepfer <hanskloepfer@...> wrote:
>
> I can imagine a relay system with four batteries which could get 12, 24, and 48 volts without necessarily draining any batteries unevenly.
>
> It would be a little cluttered.
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> 1). 4 batteries in parallel for 12 volts.
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> 2). 2 paralleled batts in series with the other 2 paralleled batts for 24 volts.
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> 3). 4 in series for 48 volts.
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> In all these configurations the batteries ostensibly would drain evenly. After all the relays were purchased and installed and an intuitive control system for the relays was conceived and implemented an electronic controller starts to seem a logical investment. I do, however, see merit in any system on a boat which is non-electronic/computerized.
>
>
> Hans
>
The configuration you mention above will indeed evenly load each battery. You are correct that this configuration can be done with switches or relays alone, no electronics required. The switches or relays, if sized correctly, will waste no power. With 6 batteries you can do 12 volts (12v X 6parallel ), 24 volts ( 12v X 2series X 3parallel), 36 volts (12v X 3series X 2parallel). These switching schemes grow rapidly in complexity, but can be configured.

Fred Rosse