Sodium Ion Battery Equipment

Has anyone investigated what equipment on the market could possibly work for a PV setup with a Na Ion battery? Nominal Voltage = 3.1V; Operating Range 2.0V-4.0V.

Inverter and Charge Controller will require very large operating window to accommodate these parameters. Does anyone have a list or experience on what the largest operating window parameters are on Top Tier equipment, based on what I have gathered the main issue will be on the low voltage end.

Most BMS currently already operate in that range ( typically 1-5V per cell ), so that's not an issue, finding the batteries that are currently just lab experiments for the most part will be the challenge.

I have a lot of experience with JK BMS and assume it would be capable of managing these cells as well, don’t think this is the equipment bottle neck unless I am missing something. I have been working with a group and evaluated their Na Ion Prismatic Cell test results and they look promising. I am looking for feedback/thoughts on what equipment I should look at pairing with this. My current DIY systems are built using Victron components (Multiplus, CC, CerboGX, Shunt, etc), there are wider battery voltage operating ranges specified by other top tier Inverter and CC suppliers, looking to see if anyone has thought about this and what they might use.

Typical ranges are 44V to 64V for the low voltage options, but the HV options have much wider ranges that would have no issue with an operational range of 100%. ( Solis, Goodwe, Growatt and dozen's of others have HV storage inverters on the market )

The real issue is not equipment but code compliance such as UL9540, so that would be a chicken or the egg. So without a BMS that can talk to UL9540 inverters, you can not evaluate the new batteries without the BMS that can talk the proprietary protocols.

Even if the new chemistry exceeds all goals your looking at more than a decade best case they would be widely available, so it is really a moot point.

Solar Canada said:

Has anyone investigated what equipment on the market could possibly work for a PV setup with a Na Ion battery? Nominal Voltage = 3.1V; Operating Range 2.0V-4.0V.

Inverter and Charge Controller will require very large operating window to accommodate these parameters. Does anyone have a list or experience on what the largest operating window parameters are on Top Tier equipment, based on what I have gathered the main issue will be on the low voltage end.

Click to expand...

A Victron Smart MPPT charger is capable of handling a Sodium Ion battery. The 12V battery will have an actual voltage span from 16.8V down to 7V or less. When your 12V devices need a closer voltage span, you can use the Victron Orion converter to stablize the voltage.

I purchased 8 cells of 75ah to build a 24v battery. I cut fiber board and surrounded the cells and compressed slightly. I purchased a Daly 8s 100Amp Sodium Ion BMS. What I received was a Lifepo4 BMS with BMS settings. I used (user defined) and all the range necessary for Sodium Ion is within any lifepo4 BMS that is adjustable.
Note this battery manufacturer said not over 3.90v per cell. others say 3.95 !! Both are within my reliable inverter 2000w 24v to 120vac The red flashing light flashes at 31v for over voltage and will keep putting out 120vac until about down to 21v. It was still working at 21v when I plugged in the charger. These batteries are amazing. the charge time is a lot less than Lifepo4.
You could actually build a home backup system with zero solar, only battery backup. Running the generator for a few hours every few days depending on battery bank size, to recharge. I love this battery. Im going to order more.

Solar Canada said:

Has anyone investigated what equipment on the market could possibly work for a PV setup with a Na Ion battery? Nominal Voltage = 3.1V; Operating Range 2.0V-4.0V.

Inverter and Charge Controller will require very large operating window to accommodate these parameters. Does anyone have a list or experience on what the largest operating window parameters are on Top Tier equipment, based on what I have gathered the main issue will be on the low voltage end.

Click to expand...

Surplusdoctor said:

I purchased 8 cells of 75ah to build a 24v battery. I cut fiber board and surrounded the cells and compressed slightly. I purchased a Daly 8s 100Amp Sodium Ion BMS. What I received was a Lifepo4 BMS with BMS settings. I used (user defined) and all the range necessary for Sodium Ion is within any lifepo4 BMS that is adjustable.
Note this battery manufacturer said not over 3.90v per cell. others say 3.95 !! Both are within my reliable inverter 2000w 24v to 120vac The red flashing light flashes at 31v for over voltage and will keep putting out 120vac until about down to 21v. It was still working at 21v when I plugged in the charger. These batteries are amazing. the charge time is a lot less than Lifepo4.
You could actually build a home backup system with zero solar, only battery backup. Running the generator for a few hours every few days depending on battery bank size, to recharge. I love this battery. Im going to order more.

Click to expand...

I am excited by your excitement. Where did you get the batteries from?