With a 14.xxx fw update as well I presume?With a 15.xx fw update I suggest
JKBMS Inverter Edition Problems/Issues | No Support / Help to fix major issues. - DO NOT BUY ! Warning (as of Oct.12.2024)
- Thread starter Steve_S
- Start date
42OhmsPA
Who likes Electrical Gremlins?
Of what year, 3024?
Steve_S
Emperor Of Solar
Today is the 29th, you have 2 Days till October.
With the Excuses & Reasons you posted earlier - if that is your target (the absolutely impossible) then how can we believe it ?
That would require "Faith" which most of us lost quite a while ago.
I think I can speak for the Majority.
We will believe it IF & When it actually arrives, is tested & proven to work (not just with Victron Comms) but SOC etc...
ALSO:
Get your Phone Apps & PC App versions sorted out & organized and post the Latest Ones on the "official" JiKong Download resource site.
Finally, remember to have Proper Change Logs (like every proper software/hardware company does) showing what was changed in each version.
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Anything that does't need closed loop. It's what I do: the BMS is there to protect cells, the charge parameters are in the charge controller. There is no communication. This works perfectly fine and doesn't require any tinkering at all.
prosier
New Member
Doesnt work like that for me.
The BMS has the cell data and the parallel BMS data, not the charger/inverter.
Bms has to decide if RCV is requested or float voltage. Bms known if one of the packs is full, so what the charge amperage needs to be. 3 packs charging is 240A. One pack full is 160A. Etc.
If all packs full then after one hour, float voltage is requested.
No way the inverter will know this all.
Do you often use just one of the parallel packs with the others disconnected? Once they're in parallel, they'll sync together and are full and empty at the same time - even with different capacities in parallel. I have four (soon six) packs in parallel.
prosier
New Member
And how does it work when 2 of 3 packs are full and one pack gets 240A from inverter and the bms and fuses will blow out?
Typically this won't happen. As the battery fills, the resistance increases. This limits the amount that can actually flow to the battery. If 2 are filled and the 3rd is close to full then the amount than can get to the 3rd battery is reduced.
rogerheflin
Solar Addict
The only way to get that sort of imbalance is for one of the pack's voltage's to be significantly different, and that can only happen if you connect a new pack with a lower/higher voltage and it will receive/send a high current from the other packs/inverter and start charging. Hence always make sure the pack you are about to connect matches voltage closely.
Quattrohead
Emperor Of Solar
This just doesn't happen but if it does you've got bigger problems.
Quattrohead
Emperor Of Solar
Thank you Steve for calling a spade a spade.
Steve_S
Emperor Of Solar
Prosier, stop wandering off topic. It's also clear you have a great deal more study to do, start a thread for that purpose please.
I have run complex banks with mixed chemistries & different capacities as do many others here. My refreshed bank is 6 packs soon to be 7 when completed to final.
I have run complex banks with mixed chemistries & different capacities as do many others here. My refreshed bank is 6 packs soon to be 7 when completed to final.
prosier
New Member
I am doing this for years, only practical experience is missing on the "parallel topic". That will come soon as I am building 3 new banks... Good to hear the running the Deye in Voltage mode is also a nice alternative.
JKBMS is the best. This thread is for "JKBMS inverter" which should be called "JK inverter bms" so it's less confusing... it doesn't seem to be a great release and is definitely having struggles, but it is completely unrelated to the regular jkbms that all the old videos/threads are about.
Check out Watts247 battery bank. He uses many different brands, capacities, and even chemistries.
Brucey
Velcro Man
I would be stunned if they cared enough for something pointless like that. This isn't DCS batteries in Australia lolSo.....I assume they gonna abuse DMCA to remove any "offending" links from search engine soon?
You haven't see how far majority of those sellers in China mess around with their competitors.
One of the tactic is hiring bots to derail the thread with irrelevant/nonsense posts.
I thought the JK Inverter BMS handles this case already since it can enable 10A charge current limit? So open loop still is fine in your example.
And they're on holidays until the 5th in China.
Horsefly
Solar Wizard
I found this thread too late, but now I already have two JKBMS.
I recently assembled a second battery, flashed v15.32 for both and I found a bug in the latest firmware for parallel connection.
The total charging and discharging currents on the DEYE inverter were constantly changing, as if someone was constantly disconnecting the slave battery. The SOC was also constantly changing, since it is different on both batteries due to different cells.
The SOC should be displayed as an average between the two batteries, but it constantly "fell" to display only the master battery.
Since I have a Homeassistant for monitoring both JKBMS and my DEYE inverter, everything was clearly visible on the graphs.
I tried everything, swapped the master and slave ... before rolling back the BMS firmware to v15.30, and then to v15.27.
And on v15.27 everything worked as expected.
But now I read in the first message that version 15.27 has some problems and can even break the BMS. Is it really so?
Should I roll back to v15.24?
In release logs.txt it is written that:
V15.26 Upgrade logs
1. Fixed a Bug about DEYE inverter CAN communication protocol.
I have a DEYE inverter. But version 15.26 is nowhere to be found. On the website of the respected off-grid-garage there is either 15.24 or 15.27.
Now I'm worried about which version to choose.
I recently assembled a second battery, flashed v15.32 for both and I found a bug in the latest firmware for parallel connection.
The total charging and discharging currents on the DEYE inverter were constantly changing, as if someone was constantly disconnecting the slave battery. The SOC was also constantly changing, since it is different on both batteries due to different cells.
The SOC should be displayed as an average between the two batteries, but it constantly "fell" to display only the master battery.
Since I have a Homeassistant for monitoring both JKBMS and my DEYE inverter, everything was clearly visible on the graphs.
I tried everything, swapped the master and slave ... before rolling back the BMS firmware to v15.30, and then to v15.27.
And on v15.27 everything worked as expected.
But now I read in the first message that version 15.27 has some problems and can even break the BMS. Is it really so?
Should I roll back to v15.24?
In release logs.txt it is written that:
V15.26 Upgrade logs
1. Fixed a Bug about DEYE inverter CAN communication protocol.
I have a DEYE inverter. But version 15.26 is nowhere to be found. On the website of the respected off-grid-garage there is either 15.24 or 15.27.
Now I'm worried about which version to choose.
prosier
New Member
Coming weeks I hope to have my system running. 3x BMS and Deye 12kw hybrid 3p. What Deye you have and what fw? I have now 15.26 on the JK but I cant find it online indeed.
Deye SUN-6K-SG03LP1-EU.
v15.27 in the moment. But I'm worried about the first message in the topic:
But it turns out there is no choice now?:
v15.24 has some bug in the DEYE CAN protocol (which one exactly does anyone know?)
v15.26 - can't find file.
v15.27 - scary warning about possible brick. By the way, what is "BORKS"?
v15.30&15.32 - have a bug in parallel mode, described by me above.