RayGenWurm
Member
- Joined
- Sep 13, 2018
- Messages
- 30
Hello everybody, hope you are doing great!
So i finaly decided to buy a Photovoltaik-System (solar? ...dont know the right term in english...)
Today a solar guy will come and make me an offer for this.
Best Case:
~5 - 6 kw/h solar panels
DIY battery.. not sure about the size for now
- If the panels produce more than needed it should be loaded into the battery, if battery is full its sold to the grid
- Ifproduction is too low - missing energy should come from battery, if battery is also low missing energy comes from grid
- If grid-power goes down i want my system to keep running (if battery is loaded)
I have a two story house (me and my parents) and i would say max current could be around 11kw on midday when everyone is cooking, fridges running....
i want to buy a solar-system which is able to handle a battery but i want to make the battery myself.
i did a bit of research and its insane what ready-to-use solar batteries cost! after a quick math i thought i can do this bigger and cheaper.
I want to buy new cells cause i dont have the time to go though the whole testing stuff.
I already found some sources for new samsung and LG cells.
So now to my main questions:
do you have any experiences in building power walls with new cells?
is it worth it of are costs too high and i should go for pre-made powerwalls?
Any special ratings my cells should have?
if its worth:
how exactly do i build my battery when it comes to BMS?
i understand how to pack the cells but i dont get this BMS stuff...
Is there some sort of schematic, drawing or whatever on how to build this?
im not sure if i want to build one large pack or multiple small ones.
lets say i want to build battery with 2 packs of same size... for example 2x 7S70p
and i want to use the batrium system => which components do i need and how to connect this stuff?
Hoping for some answers!
thanks
So i finaly decided to buy a Photovoltaik-System (solar? ...dont know the right term in english...)
Today a solar guy will come and make me an offer for this.
Best Case:
~5 - 6 kw/h solar panels
DIY battery.. not sure about the size for now
- If the panels produce more than needed it should be loaded into the battery, if battery is full its sold to the grid
- Ifproduction is too low - missing energy should come from battery, if battery is also low missing energy comes from grid
- If grid-power goes down i want my system to keep running (if battery is loaded)
I have a two story house (me and my parents) and i would say max current could be around 11kw on midday when everyone is cooking, fridges running....
i want to buy a solar-system which is able to handle a battery but i want to make the battery myself.
i did a bit of research and its insane what ready-to-use solar batteries cost! after a quick math i thought i can do this bigger and cheaper.
I want to buy new cells cause i dont have the time to go though the whole testing stuff.
I already found some sources for new samsung and LG cells.
So now to my main questions:
do you have any experiences in building power walls with new cells?
is it worth it of are costs too high and i should go for pre-made powerwalls?
Any special ratings my cells should have?
if its worth:
how exactly do i build my battery when it comes to BMS?
i understand how to pack the cells but i dont get this BMS stuff...
Is there some sort of schematic, drawing or whatever on how to build this?
im not sure if i want to build one large pack or multiple small ones.
lets say i want to build battery with 2 packs of same size... for example 2x 7S70p
and i want to use the batrium system => which components do i need and how to connect this stuff?
Hoping for some answers!
thanks