JapanPowerWall
New member
- Joined
- Dec 30, 2016
- Messages
- 11
Hi everyone, I currently run an off-grid14kWhPowerwall using a2013Nissan Leaf batterywith 2.8kWp of solar panels on the roof. And its served me and my familygreat albeit the few low SOC scares in rainy season...Been running for almost 1 year without any major issues.
However, Irecently came acrossa whole 201485kWh Tesla Model S battery pack for the incredibly cheap price (relatively)of 600,000Yen or just around 5,800USD on yahoo auction. For the whole pack! I just couldn't let it slip away especially at that price. Soooooo, I now have 16beautiful Tesla modules sitting in my living room almost making a hole in the floor (and my wallet)
I currently have nine 315W JAsolar PV panelscharging the Leaf modules Via aVictron SmartSolar 150/85Tr MPPT unit. A Victron BMV-712 Smart for SOC and power monitoring and finally a Cotek SP-2000-124 2kVa inverter. All equipment has been working every single dayflawlessly, except for the Cotek inverter. Its a long story but to keep this short I got a Victron MultiPlus 24/3000/120V as a part of the system upgrade, replacing the Cotek Unit.
I've deiced to use 14 of the 16 Modules in the main system leaving 2 modules for other projects. I was going to go 48V but that would require getting a Victron Quattro which I thinkwould be excessive and expensive. So 14 modules in parallel for "24V".
After reading a ton online I decided to purchase a SimpBMS for monitoring and keeping the Tesla Modules safe. I wanted to use Batrium BMS for its nice GUIbut since each Tesla module has its own series and parallel connections I would need a satellite board for each module making the total cost outrageous. And since the SimpBMS uses the original Tesla battery slave boards which handles cell monitoring,balancing and temperature via two thermistors in the pack, everything becomes quite simple. I have all the parts for the upgrade ready, waiting to be installed, except for the SimpBMS, thats still being shipped.
Today I've been trying to figure out how the slave boards connect andcommunicate via the daisy chained wiring harness. Let the record show, I'mvery confused....
Does anyone have a diagram on how these would connect to 14 paralleled modules then terminate into a SimpBMS with only 4 wires?
I was able to figure out that the originalTesla harness uses a Molex type connector with 5 sets of two pins connected together in each slave boardfor a total of 10pins per connector. I made a pinout diagram of the connector
Now what confused me is the SimpBMS wiring diagram for Tesla modules. It shows only 4 wires going into the SimpBMS board with only 2 modules worth of connectors shown as the example. Because only two modules were shown as an example I don't know how the rest would connect....
How can I usethe original Tesla wiring harness? How do I go from 10 wires on the Tesla harnessto only 4 on the Simp?
Thanks in advance guys.
However, Irecently came acrossa whole 201485kWh Tesla Model S battery pack for the incredibly cheap price (relatively)of 600,000Yen or just around 5,800USD on yahoo auction. For the whole pack! I just couldn't let it slip away especially at that price. Soooooo, I now have 16beautiful Tesla modules sitting in my living room almost making a hole in the floor (and my wallet)
I currently have nine 315W JAsolar PV panelscharging the Leaf modules Via aVictron SmartSolar 150/85Tr MPPT unit. A Victron BMV-712 Smart for SOC and power monitoring and finally a Cotek SP-2000-124 2kVa inverter. All equipment has been working every single dayflawlessly, except for the Cotek inverter. Its a long story but to keep this short I got a Victron MultiPlus 24/3000/120V as a part of the system upgrade, replacing the Cotek Unit.
I've deiced to use 14 of the 16 Modules in the main system leaving 2 modules for other projects. I was going to go 48V but that would require getting a Victron Quattro which I thinkwould be excessive and expensive. So 14 modules in parallel for "24V".
After reading a ton online I decided to purchase a SimpBMS for monitoring and keeping the Tesla Modules safe. I wanted to use Batrium BMS for its nice GUIbut since each Tesla module has its own series and parallel connections I would need a satellite board for each module making the total cost outrageous. And since the SimpBMS uses the original Tesla battery slave boards which handles cell monitoring,balancing and temperature via two thermistors in the pack, everything becomes quite simple. I have all the parts for the upgrade ready, waiting to be installed, except for the SimpBMS, thats still being shipped.
Today I've been trying to figure out how the slave boards connect andcommunicate via the daisy chained wiring harness. Let the record show, I'mvery confused....
Does anyone have a diagram on how these would connect to 14 paralleled modules then terminate into a SimpBMS with only 4 wires?
I was able to figure out that the originalTesla harness uses a Molex type connector with 5 sets of two pins connected together in each slave boardfor a total of 10pins per connector. I made a pinout diagram of the connector
Now what confused me is the SimpBMS wiring diagram for Tesla modules. It shows only 4 wires going into the SimpBMS board with only 2 modules worth of connectors shown as the example. Because only two modules were shown as an example I don't know how the rest would connect....
How can I usethe original Tesla wiring harness? How do I go from 10 wires on the Tesla harnessto only 4 on the Simp?
Thanks in advance guys.