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ai-republic / bms-to-inverter

Use, monitor and control any battery brand with any inverter! Application to read and monitor data from BMSes and write data to an inverter using any protocol (e.g. UART, RS485, ModBus or CAN)
https://github.com/ai-republic/bms-to-inverter
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JK BMS to BYD protocol #43

Open ckambiselis opened 4 months ago

ckambiselis commented 4 months ago

Since you support the BYD BMS, is it possible to add BYD CAN protocol as the output? I'm looking to make a custom JK BMS battery to use with a Fronius inverter, they support BYD batteries CAN protocol.

ai-republic commented 4 months ago

Sure, that shouldn't be a problem. Have to see if I get any time for it this weekend though as its my sons birthday ;)

ai-republic commented 3 months ago

I finished the Pylon RS485 bindings and will do the BYD Inverter binding next weekend :)

ai-republic commented 3 months ago

@ckambiselis I just noticed that the BYD and SMA protocols are very similar and should be compatible. There are only a couple of extra commands in the SMA protocol. Can you try the selecting BYD protocol for your Fronius using the SMA binding?

ckambiselis commented 3 months ago

Hi, I'm currently waiting for a lot of parts of the system, so I can't test anything yet, but that's great info.

ai-republic commented 1 month ago

@ckambiselis any updates on your setup? Is it working for you now?

ckambiselis commented 1 month ago

Have been really busy at work, so I haven't been able to test it yet.

mman358 commented 21 hours ago

Hi! I have a similar question so I'll borrow this issue.

I have ordered the following components:

3 x JK-DZ11B2A24S (manuals attached, the english one is not for exactly the right model but quite close) 64 x 105Ah LifePo4 cell

The plan is to connect 64 cells in series and use 3x24S active balancer in series so my cells stay in balance. JK-DZ11B2A24S is an active balancer, not a BMS but I can read voltages, currents and temperature from it via RS-485.

I have Deye SUN-15-5K-SG01HP3-EU-AM2 inverter. This is a high voltage model. It understands BYD battery protocol among others.

Do you think I could use this bms-to-inverter for my DIY battery-inverter communication with rasberry Pi or Pico?

JK-DZ11B2A24S均衡器RS485通信协议V1.3.pdf JK-B1A24S-RS485-protocol-english.pdf

ai-republic commented 1 hour ago

Hi @mman358, yes I'm sure you can. I will have to create a RS485 binding for the JK-DZ11-B2A24S but that shouldn't be a problem. Your Deye HV inverter will surely support the Pylontech HV protocol (and probably the BYD as you mentioned) so that is already there. As hardware I would recommend a Pi 4B and Waveshare RS485-CAN-Hat as your Deye can communicate via CAN. If you have any questions just ask 😉