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Balkonsolar mit AKKU - So geht's richtig!

Sep 17, 2022

Balkonsolar mit AKKU - So geht's richtig!

nine people seeing here my three on console with battery solution this is just experimental but it works great so far so i'll take it all apart soon but now i'm going to show you how it works and the cool thing about it and i can't control the power fed , that is, what I get from the battery in the park complex network at night when the PV is off, so I can say everything that I would like to power and thus maximize my own consumption or everything, even in consumption in my adaptation of the house, I say that the electricity is in the battery and then I only give as much as I actually consumed, so only the real surpluses go to the network, that is, when the battery is full and nothing really works well anymore So how does that have to be the first thing to do?
balkonsolar mit akku   so geht s richtig
Think about what is really necessary for this, but we'll go through it step by step, I'll show you the parts and explain what they do. i'll blind you always a simplified schematic of the system and i show you here what this looks like in reality let's start with how we charge the battery this is basically done by this device here it's a very simple charge controller that's just plugged into the tv tv ie to pv modules and this is a very cheap npower mister charge controller from china it is very cheap and can handle pretty much all common battery voltages ie 12 24 36 48 volts it can even handle a relatively high pv voltages and it doesn't cost much, the max output is said to be over 60 amps at 2.8 kilowatts, but I highly recommend not charging this part fully, so from various experience reports I now know at least about this special charge controller this tree is that the part can be charged at max 40 amps and that is only possible if you have additional cooling facilities.
balkonsolar mit akku   so geht s richtig
The thermal design on this thing is just not good and the specs are over the top, so be careful here. Be ig if you use this charge controller there are also ipa charge controllers and so on they are a bit cheaper so they are better and also cheap so I can only recommend you use it more to check the performance of a photovoltaic module or something like that or for such experiments because I only have the part here and I want to use it as I said, these things are not bad, charge the battery and then offer a 230 volt connection, which is then not connected to the network absolutely everything it's conceivable so I can do whatever mess I really want how it works here here are the PV modules which are now easy to do with the charge controller and the charge controller gives letters to the battery so that is everything, much more. the battery to the controller is basically not on in my case it's a 48 volt lithium iron phosphate battery with about a kilowatt hour and we currently have 2 370 sws PV modules connected in series and connected the 2 so you can get the corresponding photovoltaic voltage of at least 72 volts for the power lord I'm you here's a table again 1 for how many you want so to speak what minimum voltage is required here are even two you still have a little but it's enough for one battery of 12 volts of 24 meters, of course the required voltage is reduced as I said here the table says again for you to go up that only applies to this charge controller and surely you will wonder how I can build a small battery economically the things that can be bought are very very expensive and it's actually not that easy and that's why I'll also talk about it soon to make its own episode and present you with the solution that I know co yeah the heart of it that's the gross thing actually this is what makes the thing so interesting this is called d cdc the big challenge was actually how do i get battery power on my home network and that can be regulated so i just want to be able to set how many? watts the battery powers my house and that is best done with a computer or raspberry pi so here is for example a computer that is doing exactly that right now and that can be done with this amazing device here this is a handy dpm 8624 with a rs485 interface that means i can connect the part to mine via usb connect the pc or on rasberg ii we hang the battery pretty much here on the input so it goes to the input again here between a small fuse and the output of the device now goes to the normal micro inverter so really that perfectly normal balcony solar system micro inverter sees the ev thief just walk in there so we are pretty much pretending this dpm 8624 is a pv mo dule so we simulate a PV module inverter which is actually powered under a micro inverter and pretty much what I'm saying here so I'm saying volts and voltages in a way that I specify and therefore I cannot set the power that I then actually weld at home. network and now I'm going to show you again here as an example so I'm going to show you here how I set it up here and then you'll also see my motor power meter tas so to speak then you can see how it reacts so that's very cool it really worked great and of course I can automate everything now so now I can also write a script where we always set the current to match the current draw of course as long as it's below this 600 watts per what there or between the power of my photovoltaic modules or micro inverters then the device itself may be the dcd sc where a test system was maxing out at 1400 watts i now built here doesn't go up to 600 watts the wiring is not good as I said this is also just an experiment and will be dismantled immediately after the session because the big inverter from mpp solar.de is not down so my real big inverter usually for me everything which means I don't need it personally it's really just for you now yeah I'm turning on the electricity meter again so I've always written a very small example script and you can always see it again now always trying to regulate 0, yeah that works pretty good and where the data is coming from so how does he know how much I'm feeding right now?
balkonsolar mit akku   so geht s richtig
I'll explain it to you in a moment, but is it kind of cool or we'll just do it like this as if the dcd cell wall were photovoltaic modules. It works really very well. If you wish, you can connect a photovoltaic to the microinverter. module, i.e. connect a second PV module to the input and then power it constantly, for example, but then you need to make sure that the maximum power of the inverter is not exceeded and that there really are two separate inputs, so if in doubt , leave it on the microinverter yes the next big question is how can I now control how much food I actually eat optimally you should always feed as much as you are consuming right now so the rest is stored in the battery and then goes away you can use at night that's the trick is you maximize your own consumption when the battery is full at some point you can just feed it continuously the power is lost but all of that can be regulated beautifully here with this system to be able to do that we just don't have the information of how high my current consumption is at this moment to be able to regulate it and that can do something like that with the so-called census meter that in actually it's pretty good newer electricity meters usually have ultra cool infrared interface and you can read them with a head like this but you have to be careful here because you have to activate cellular first i.e infrared activate interface first and how do you do it might be easy i wouldn't say now but you have to call the network operator for a code and now hold on tight enter the code success with a flashlight it doesn't suck with one of those morse code guys yeah super modern it's a miracle that we don't have to send it on paper or by fax is really awesome but that's done there you can use a little raspberry pi zero or the read head under the free census software to read what's currently using the data then you can send it to the central raspberry through mrt or something similar and they can do it through the cdc converter then speaking and always in what it practically consumes currently which doesn't work out of the box of course it takes a moment until it sets but overall it works great so i tried it here with my system and that works which phase you power one with this microinverter it doesn't really matter because the narrator it always sums up all the phases yes, at least in purely mathematical terms there is practically no difference which phase you feed in its just very main the problem that you actually don't have at all the volks thailand doesn't necessarily need the interface you can for example just control your consumption constantly or say a little more at the moment, for example in the morning for breakfast or for dinner and constant during the day or something like that, of course, that is also possible because it is your almost limitless creativity that is important. a It's just that everything is possible and you can control it yourself, since it makes sense to you and how much you want it.
balkonsolar mit akku   so geht s richtig
Of course the big question now is how much are the parts and where can I get them here compared to the normal balcony. solar you still need them of course an additional charge controller on the other hand for example this pending or such a device and that battery voltage the prices are very different to the spare parts are also available on the gwl , for example, they are relatively more reliable out of stock so now I find them more reliable than aliexpress but they are a little more expensive let's say about 100 euros for the simple charge controller about 80 euros for the dpm the cdc converter and in the case of a 600 watt system the dpm 8 6 1 6 would also be completely sufficient you can get a maximum of 900 60 watts but five euros more and the most powerful version with a 1440 watt output ok so that's about 180 for electronics additional, so in the normal balcony solar system On top of that, and of course, you also need a small battery which is relatively important; otherwise it doesn't make any sense if I do the math and come up with a reasonable battery size for most people.
balkonsolar mit akku   so geht s richtig
I think around 500 watts is worth it. not at all and i'll bring you the exact calculation again in one of the next episodes i'll show you because it's really worth it the cheapest subscription option i could find is a good 150 euros for the 105 100 watt hour battery too i will do something about it I soon said a sequence, so how can I assemble such a battery in total? So we come to 330 to 350 euros more if this really wants to stay cheap. Yes of course there are other possibilities because I'm probably not the first. one who came up with this idea so if you finally fixed it or something and feel free to write me about your experiences I find it super interesting what I don't have the s system yet or it has been in use for a long time so who is so exciting?
balkonsolar mit akku   so geht s richtig
Of course, there are still some other channels and also members on our forum who even have some other great solutions ready. another one in the forum for example stefan has presented a very interesting possibility how to solve this power problem with battery then use this krizaj inverter from aliexpress with limiter which unfortunately is very hard to get right now the link it's below but then there's the youtube channel solar system which also has a very interesting solution it uses a very simple relay to switch everything back and forth almost all the time so that works too it works in a way very simple, but also look at it, actually I thought it was very nice and maybe for some it was a very good option, why not?
If you like my work or ours, you will find a Paypal link below. please leave us a small amount of support for the coffee fund we are so glad it all went that way we can still be independent and do such experiments sometimes that's great so thank you for what i have shown you here we are now doing a test set up an experiment and if all this is allowed and so on I don't know yes I will show you here just a technical solution you can do it like this below that regulates everything and for me something like that is not necessary yes so if you somehow want to do it yourself himself, he does it at his own risk and inform himself properly and first check if this is allowed as I said.
I don't know because I'm not an expert so bring it now I have two more videos on when it's worth it and how to build your cheap battery, as I told you, you don't usually know much thanks for watching and until next time
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