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  28.März 2024 09:31:59

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 Thema: 12 Volt Bordbatterie im 24 Volt system  (Gelesen 9431 mal)
WJM

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Re:12 Volt Bordbatterie im 24 Volt system
« Antwort #60 am: 3.Juni 2019 21:42:23 »
Antwort mit Zitat nach oben
Zitat von: Arnd am 16.April 2018 14:24:13
Nur zwei Fragen. Ist das Kabel 12V Equalizer zur Brücke der Batteriebank richtig und
wozu ist das da?

Nur mal zur (spaeter) Vollstaendigkeit:

Battery-Equalizer/Charge-Balancer haben selbst halt nur 3 Anschluesse, also rein deswegen hat man schon kein Wahl, welcher Batterie-Pol wohin gehoert, cq die Bruecke muss sein....;))
*Verkaufe Battery-Equalizer/Charge-Balancer/Wandler 24->12v/100A*


Those who wander are not necessarily lost
J.R.R. Tolkien
...and not all who launder are washed/WJ....;))


<w.j.markerink@A1.NL>
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Norweger

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Es geht langsam voran

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Re:12 Volt Bordbatterie im 24 Volt system
« Antwort #60 am: 17.Januar 2020 17:56:22 »
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nein noch nicht, kam zuuuu viele dinge dazwischen. hoffe das alles  in das nächste halbe Jahr laüft
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Greenmachine

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Re:12 Volt Bordbatterie im 24 Volt system
« Antwort #60 am: 3.Februar 2020 19:1:50 »
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Hello and greetings,

I am working on a project brining 12v to a 24v tgb11. I chose to add a 12v battery for storage, a blue sea 4 position switch and a victron Orion 24-12 70a converter. For safety with a non-isolated converter I am using 80a breakers on both positive leads on the converter. Below is my wiring diagram. Apologies for my poor art skills. Maybe it will be useful to someone or a mistake can be seen by someone. Thank you all for the wisdom on this forum.
Regards

« Letzte Änderung: 3.Februar 2020 20:21:39 von Greenmachine » Moderator benachrichtigen   Gespeichert
solarstone

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TGB 11 »Rübezahl« - BJ 1975

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Re:12 Volt Bordbatterie im 24 Volt system
« Antwort #60 am: 3.Februar 2020 20:31:2 »
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Hi,

Did you drive the TGB safe home? After all those things at the harbour? wink

OK I can't see any basic mistakes in your diagram but there are some things I don't understand: Why are you using so many switches? Ground is always ground - doesn't matter if 24 or 12 V. So because of this I would suggest to set the 12V fuse block on truck ground. Install one main ground switch - this disconnects both - the whole truck electrics and the 12V fuse block.

Whats a breaker? A switch? Maybe better to use a fuse (high energy from car hifi)?

The Orion is not bad indeed - do you have it already? But I think the 70A is a bit overpowered as the vehicles alternator has only 35 A. There are some B2B chargers on the market (look for votronic VCC 2412-25 IUoU-Li, don't know if they are availabe in the us) which might fit better. Those chargers have also different loading modes for different battery types. And they have intelligent electronics which avoid empty starting batteries.

If you trigger the charger with vehicle ignition - it only works when ignition is on and engine is running. Maybe set the trigger on a remote switch instead - so you can use the charger also with solar-modules or with a charger on common household power outlet (good for winter... smiley )...

Kind regards
Raffi

Ein Schelm wer dabei Böses denkt...
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Christian K.

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irgendwas ist immer!

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Re:12 Volt Bordbatterie im 24 Volt system
« Antwort #60 am: 4.Februar 2020 01:53:23 »
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Hey,
in my understanding, a breaker is a combination of Fuse and Switch. We have it in the planes.
The Votronic has a off/on switch. You can even use it with a remote switch. Got it in mine. So I can choose, first the 24v car battery or 24v car and 12v back batterie. You can even choose, at witch voltage the charger switches on, like at 25,8v or 27.6 v i.e. Quite nice. There is even a naval version available, where the board is protected against water.
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Greenmachine

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Re:12 Volt Bordbatterie im 24 Volt system
« Antwort #60 am: 4.Februar 2020 06:32:56 »
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Raffi,

Thanks for the input. Delivery of the truck went fine with some small problems and customs difficulty. The truck is in rougher shape than presented and pillaged of some important parts.

Anyway, As Taq said a breaker is a resettable fuse switch similar to household electrical. Really nice to not worry about having spare fuses.
With hopes of preventing grounding loops I’m planning on returning all 12v circuits back to the 12v battery.
Voltronic is not very assessable in the US and support is difficult here. The 70 amp converter is oversized for the Volvo alternator. I plan to upgrade the alternator to a larger 100+amp at some point. I also found the 70amp on sale here for 120 dollars.
Four way grounding switch is good for me because you can shut down 12v OR 24v or both. Good for battery voltage protection and theft prevention.

I’m so happy to have this truck. Volvo’s are so enjoyable to drive and work on. I love this big green thing.
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tegebe

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Re:12 Volt Bordbatterie im 24 Volt system
« Antwort #60 am: 4.Februar 2020 18:44:28 »
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The Orion 24-12 70 A is just a converter, which means output is 12 V. His purpose is to deliver 12 V for 12 V consumers.

However, to charge a 12 V battery (lead acid), charging voltage should be at least 14,8 V.
The better choice in this case would be a battery-to battery charger (b2b charger).

Edit: Ah, I see, the output of the 70 A version can be regulated. So that should work. Nevertheless, it is then just a "dumb" loading process. A b2b charger would adapt its charging voltage accorduing to the battery needs.
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