miguelrgramos
New member
- Joined
- Jan 16, 2020
- Messages
- 10
Hello everyone!
Its been a while since I started my interest in energy storage. and a slow ride also:dodgy:
You guys gave me a lot of help/information to start my project.
I have harvested and bought some 18650 about a year nowfrom laptops and electric bikes. +/-600cells for approximately --------- 500
I also bought an inverter EASUN Isolar SMII 5KW, I think its the same as thePIP 5048MG for ------+/-600
6 * 400w redsolar + installation with the inverter (I did it)----------------------------------------------------------------------------------+/-1700
For the battery pack I decided to set up a 14S36P giving me 4.84KWh nominal , 93.6ah , 51.8Vall in one pack! yees!
I also bought the Kweld since I didn't want to iron solder 504cells. too muck heat!!!
I wanted to have the batrium bms but...!!! So Itested several BMSs,the smart xiaoxiang and the dally both between60 and 70AI realized the xiaoxiang is very unstable a not so good to tweak, giving me internal errors that don't reset, I fried 2 xiaoxang bms.The support from the producer is inexistent, but what do you expect!
For now I connectedanother xiaoxang with a dallyin parallel to handle at lest 60A easily. But I don'tlike this bms paralleling setup because of the downsides it as so Iwill buy a 100 or 120A Dally bms to solve this.
My total investment with solar panels, inverter, batterypack, all the other little accessories, (I did not mention because they are plenty) for under 3000 Some may say its a lot but, take in mind it feeds the entirehouse, and is capable of heating the wateralso. considering the battery pack also I think it is quite cheap if you compare with my local pv/bat specialists that offer900w pv installation with a 1.1kw inverter with no batterystarting at1900...
My consumption was hight, I managed to reduce at least60% of the bill. I use an average of 15kwh per day, and mostly produce between 7 and 10 depending. I know I can reduce the bill even more because the batteriecharges and that extra solar goes nowhere most of the time,I'm doing some stuff with tasmota and nodered to turn on the water heater when that happens.
To do so I bought ICC software, this way I have all the inverter topics easily sent to node red. I tried to do it with myself with Daromer'stutorial but some connection problem between the inverter and raspi wasn't working well, anyway, I have the inverter connected to the icc in the raspi sending data to nodered where I'm doing the function to control the heater, and in the future more stuff like weather prevision for charging the battery at night, Dashboard....etc.
I also want to add at least one more pack so it handles completely the loads of the house, I've been distributing the loads so it doesn't exceed 3500w during battery mode.
here are some more pics of my work!
You can see here I soldered the cells in a way that the load is evenly spread between all cells connectedin the sameparallel
I'm also doing some king of modem/router backup using the same 18650cells. To do so I'm using the batterycases from the electric bikes, Iboughta 3s40A bms, some DC-DC XL6009 Step Upmodules to stabilizevoltage for each output (I'mgoing to have 3)since the curve of these 18650 cells with this bmsgoesfrom around 10to 12.6 V. and then I'mgoing to have the 3 dc sockets on the case to connectto the devices.
For the power supply(and here relies my doubts) I boughta 12V+-0.5v LED driver capableof 12.5A.power supply
Everything is ok but in my test the power supplydoesn'tcharge the batterieswhen the pack is under a certain voltage(not sure ow much), When connected, the power supplyticks and it doesn'tcharge, but when the pack voltage is over 12V it maintainscharge.
Does somebody know what'sthe problem? do I need a stable 12.6V supply? is it
I would like some feedback since I'm doing this all by myself.
Thanks a lot guys!!!
keep safe
Its been a while since I started my interest in energy storage. and a slow ride also:dodgy:
You guys gave me a lot of help/information to start my project.
I have harvested and bought some 18650 about a year nowfrom laptops and electric bikes. +/-600cells for approximately --------- 500
I also bought an inverter EASUN Isolar SMII 5KW, I think its the same as thePIP 5048MG for ------+/-600
6 * 400w redsolar + installation with the inverter (I did it)----------------------------------------------------------------------------------+/-1700
For the battery pack I decided to set up a 14S36P giving me 4.84KWh nominal , 93.6ah , 51.8Vall in one pack! yees!
I also bought the Kweld since I didn't want to iron solder 504cells. too muck heat!!!
I wanted to have the batrium bms but...!!! So Itested several BMSs,the smart xiaoxiang and the dally both between60 and 70AI realized the xiaoxiang is very unstable a not so good to tweak, giving me internal errors that don't reset, I fried 2 xiaoxang bms.The support from the producer is inexistent, but what do you expect!
For now I connectedanother xiaoxang with a dallyin parallel to handle at lest 60A easily. But I don'tlike this bms paralleling setup because of the downsides it as so Iwill buy a 100 or 120A Dally bms to solve this.
My total investment with solar panels, inverter, batterypack, all the other little accessories, (I did not mention because they are plenty) for under 3000 Some may say its a lot but, take in mind it feeds the entirehouse, and is capable of heating the wateralso. considering the battery pack also I think it is quite cheap if you compare with my local pv/bat specialists that offer900w pv installation with a 1.1kw inverter with no batterystarting at1900...
My consumption was hight, I managed to reduce at least60% of the bill. I use an average of 15kwh per day, and mostly produce between 7 and 10 depending. I know I can reduce the bill even more because the batteriecharges and that extra solar goes nowhere most of the time,I'm doing some stuff with tasmota and nodered to turn on the water heater when that happens.
To do so I bought ICC software, this way I have all the inverter topics easily sent to node red. I tried to do it with myself with Daromer'stutorial but some connection problem between the inverter and raspi wasn't working well, anyway, I have the inverter connected to the icc in the raspi sending data to nodered where I'm doing the function to control the heater, and in the future more stuff like weather prevision for charging the battery at night, Dashboard....etc.
I also want to add at least one more pack so it handles completely the loads of the house, I've been distributing the loads so it doesn't exceed 3500w during battery mode.
here are some more pics of my work!
You can see here I soldered the cells in a way that the load is evenly spread between all cells connectedin the sameparallel
I'm also doing some king of modem/router backup using the same 18650cells. To do so I'm using the batterycases from the electric bikes, Iboughta 3s40A bms, some DC-DC XL6009 Step Upmodules to stabilizevoltage for each output (I'mgoing to have 3)since the curve of these 18650 cells with this bmsgoesfrom around 10to 12.6 V. and then I'mgoing to have the 3 dc sockets on the case to connectto the devices.
For the power supply(and here relies my doubts) I boughta 12V+-0.5v LED driver capableof 12.5A.power supply
Everything is ok but in my test the power supplydoesn'tcharge the batterieswhen the pack is under a certain voltage(not sure ow much), When connected, the power supplyticks and it doesn'tcharge, but when the pack voltage is over 12V it maintainscharge.
Does somebody know what'sthe problem? do I need a stable 12.6V supply? is it
I would like some feedback since I'm doing this all by myself.
Thanks a lot guys!!!
keep safe