Search results

Regarding the other questions I will answer them by doing a 'How to'. It will be easier for me.

The 'packages' folder must be part of your folder before compiling. Other YAML will not be downloaded automatically.

If you have problems with bad cells I advise you to try the Auto CVL and Auto CCL/DCL functions of @MrPablo This function is complementary, it would be good to analyze your problem in order to see which one could respond best. Here is information about how they work. If you have any other...

In addition to the main YAML, you must have the packages folder as well as secrets.yaml (with your wifi credentials) in order to compile.

Regarding the multi-bms version, if you don't have a PVbrain2 PCB, the YAMLs you can use are multi-bms_wire_one-esp.yaml multi-bms_ble_one-esp.yaml multi-bms_mix_one-esp.yaml As indicated in the name of the YAML it is a solution with a single ESP32. FYI an ESP32 can support max 3x UART and 3x...

All calculations are carried out with max_cell_v see the equations below. You actually have problems with your current config, you must use the multi-bms version in your case. Multi-bms version (dev)

Thank you for your contribution to the project and thank you for testing the first multi-bms version with the new JK-BMS-PB. 3x Deye and 7x JK-BMS-PB with a single Atom S3 Lite + Atomic CAN base. 🥳

@chaosnature @robot_zombie For those who want to test the new multi-bms version, I will give you more information here soon. I'll update the README to get started.

So these are two completely separate installations? We could try with this part :

We would say photos of the new JK-BMS inverter PB series. It is not possible to select the UART or CAN portocole on older JK-BMS.

The multi-bms code is ready to test but I don't know if it can work with your config. I would need a drawing to understand how your system is built today. So you have 4 batteries today? 2x BMS JK-B2A24S15P? 2x BMS JK-PB2A16S15P? How many inverters? Are you using Atom S3 Lite + Atomic CAN Base?

Are you talking about this diagram? It's possible to change the position of the wires to connect JST. Use a needle to push them out and then reposition them.

For my part, I flash the ESP32 or ESP32-S3 from the command line from Linux without any problems and I don't need a web interface. I find it very simple. When the firmware is compiled, the choice is offered to upload it via UART or IP. esphome run jk-bms-can.yaml To flash an ESP32 already in...

I'm currently working to finalize the multi-bms version with everything connected on a single ESP32. This is mainly intended for the PVbrain2 card but this should therefore work with 2 or 3 BMS and a classic ESP32 (to be tested). https://github.com/SeByDocKy/pvbrain2 Thank you for the links...

Not having an Atom S3, I cannot develop or test anything but there is already code available and tested by @arzaman. This will be part of the new packaged version. https://github.com/Sleeper85/esphome-jk-bms-can/blob/development/packages/device_atom-s3-display.yaml

Thanks, that’s interesting. @arzaman and @Der_Hannes can you share your procedure? I could then do a how to in github.

Thank you for taking the time to document your procedure.

Thank you for taking the time to document your procedure.

OK. Sorry but I don't have Atom S3 board.

https://github.com/Sleeper85/esphome-jk-bms-can/blob/main/config/config_atom-s3-lite-esp32-s3.yaml

More infos : https://diysolarforum.com/threads/jk-bms-can-with-new-cut-off-charging-logic-open-source.79325/post-1016990

These are functions that help prevent OVP from triggering with an unbalanced battery or with runner cells. If your battery is well balanced and of good quality then it is not necessary to activate these functions...

Yes 0.003V is very low, default is 0.01V. I personally use 0.005V.

In addition, with a charging voltage of 54.2V, the cutoff amps is close to 0A, see the links cited above.

Because one of the end-of-charge conditions is that the equalization of your cells is completed, which is not the case.

With switch balancing enabled, charging only ends when your cells are equalized. Delta cell V. must be smaller than Balance Trigger V.

https://github.com/Sleeper85/esphome-jk-bms-can/blob/main/documents/README/Cut-Off_Charging_Logic.md You have a large delta cell V. It is necessary to have the complete list of your parameters to analyze them. The code has been tested, there is no need to modify it.

Wait a moment. The EOC then Float status arrives when the equalization is completed.

If you use TimeOfUse you must at least have a time slot where you request a 100% charge otherwise you will never charge to 100%. You can also try without TOU.

In the case of using an ESP32 JK-BMS-CAN, the ESP32 and our software is the only component that communicates with the inverter. The 100% BMS is completely ignored, 100% is sent only at the end of the full charging process.

Because the 100% BMS is not always true and some brand of inverter stops charging at 100%. If you remain stuck at 99%, your battery has not finished charging. Check this post concerning DEYE TOU : https://diysolarforum.com/threads/deye-weird-voltage-behavior-when-time-of-use-is-enabled.80908/

54.2V is a very low charging voltage for LFP. Do you use TimeOfUse with Deye? Can you send a screenshot of your BMS settings?

Hi, 99% means charging is not complete. The canbus sends 100% only when the charging phase is completed when the status is EOC or Float.

@chaosnature The multi-bms code (several BMS connected on the same ESP32 as with PVbrain2) will soon be ready to test. I have been very busy on another project in recent weeks and still have to code the multi-bms alarm system. We haven't changed the part of the code you cite, it's defaulted to...

The documentation says 15min. Could be another reason?