Current code issues, future plans

[mkaiser]

Future work items and disussion about code quality

Discussions, suggestions and help are much appreciated. I have not very much free time at the moment to check address all this by myself. So I will just write down what is in my mind right now :)

1. ~~use "unique_id" for every sensor. With a unique_id, every sensor can be edited via GUI (this feature was not yet available, at first release of this integration) When this is completed it is possible to MANUALLY ( :/ ) assign each value a room. In the Dashboard the sungrow inverter values would be grouped in that room and the values would not be randomly spread among the "generic sensors"~~

2. Find a way to hide some values like the internally used "device type", from which the user-readable device strings are derived in a template sensor.
   They have a unique_id now, so at least they can be hidden by the user via GUI.

3. Search for alternatives to set the user-specific parameters (IP, slave address, port) outside the .yaml configuration files and outside the secrets.yaml (currently it is there).

4. Find a way to read parameters for maximum battery charge (inverter requests that value from battery at run-time). Then use this value to set range of the maximum battery charge current.

5. Provide a second yaml file for slave inverters #43

6. Collect more dashboard examples from users (see cdaa5e8fc97bc78c429e5be8594e6e257cdcc045)

7. Document, how to write own automations, as asked here: https://github.com/mkaiser/Sungrow-SHx-Inverter-Modbus-Home-Assistant/issues/50#issuecomment-1407123886

8. Maybe split current sungrow_modbus.yaml into multiple files (e.g. Base, Battery, History), #65

Most of that would look like an ABI-change and users cannot simply upgrade by replacing the .yaml files. Should be something for a testing / v2 branch then.

[andi-blafasl]

Hey, just thinking loud a bit. Maybe we can go a more "official" road with the integration? I think following the documentation from HA would be a bit complicated and time consuming. But HACS seems to be a more lightweight approach.

[elektrinis]

I am very happy with rate of progress of development, however would really love it if this was installable via HACS. While I managed to install it, it is really hard to maintain, and all the entities are not logically grouped in any way, so I have to keep an extra tab with all of entities to pick from.

Sadly I am unable to help with this :( Hopefully someone will jump in.

[mkaiser]

hi,

I just decided not to write an HACS extension, because there is this project https://github.com/bohdan-s doing exactly this.

So this project will focus on the simple (understandable), easy to fix YAML-based integration.

[mkaiser]

Idea from Louis712 to get rid of the secrets

https://github.com/mkaiser/Sungrow-SHx-Inverter-Modbus-Home-Assistant/pull/47#issuecomment-1404740741

[mkaiser]

https://github.com/mkaiser/Sungrow-SHx-Inverter-Modbus-Home-Assistant/pull/47#issuecomment-1404740741

could be realized by using another "configuration tab" in the GUI like in #48

[reesaroo74]

@mkaiser FYI: https://github.com/mkaiser/Sungrow-SHx-Inverter-Modbus-Home-Assistant/commit/e8ec5473c2d6d199de4634e4e7e9c5d51cab4ff6

[mkaiser]

@mkaiser FYI: e8ec547

good catch! Do you want me to just integrate it or do you want to create a Pullrequest (and do not miss all the fame! ;) )

[reesaroo74]

Happy for you to merge.

While you're in there:

Where did you get the inverter state binaries from ... here's a new one.

I tweaked your code to punch out the state:

I suspect it is from some incorrect clamping of the three phase. This is for a SH10RS on a three phase system. If only I could have taken a photo of the installers faces when they had to wire that one up. They looked like me when I first hit yaml a couple of days ago. I'll try and get them back today to fix that up. It is stuffing up my EMS.

[mkaiser]

okay, will merge it :)

Found this in the SG modbus description. In my last version of SH there isn't such value

"The inverter runs according to the scheduling instructions received from the monitoring background"

I don't know that is meant by "monitoring background"... Do you have any clue?

[reesaroo74]

I'm moving across to Amber energy here in Australia. It is possible that they are hooking up and controlling it via their SmartShift ?? I'll ping the installers and Sungrow today.

[rleidl]

Battery health during winter.

I have some thoughts about my battery during winter. Where I live, the battery won't have hardly any charge for two or three months. (mid of november to mid of february approx). If I let the minimum SOC at say the normal 5% the battery will be charging from nominal 5% to 10% and back.

In my head I have the idea that for optimum battery health the SOC should be at 80% when not in use. Am I correct? So I would like to be able to set Minimum SoC to 80 %. ATM the max SoC is 50% with the slider.

Could one change this so I can set Minimun SoC to 80% - maybe I am wrong about this battery health issue, maybe someone could clarify this. Thanks! R.

[elektrinis]

In my head I have the idea that for optimum battery health the SOC should be at 80% when not in use. Am I correct? So I would like to be able to set Minimum SoC to 80 %. ATM the max SoC is 50% with the slider.

Optimum SOC for LFP is around 30%. So just keep it within 10-70% and you'll be fine.

[dylan09]

But be aware that Sungrow recommends max SoC 100% because of balancing. If you did not charge until 100% there will be no balancing. And your cells my drift.

[rleidl]

Thank You.

@dylan09 - this means I should charge the Battery to 100% on a regular basis (in summer) or just now and then?

R

[danielclau]

I would set min at 40% and for the whole of winter and let it let it go up and down 10% from there. Not balancing cells for 3 months will only make the remaning estimation a bit less accurate but as long as you aren't planning to take it down to single digits, it will be fine. There will be no permanent damage/degradation to the battery. When spring breaks in Feb, charge it up fully and let the cells balance then. If you haven't balanced them for 3 months, it sit at 99% for more than an hour but once balanced, the estimation will be accurate again.

[dylan09]

My minimum SoC in winter is between 50% and 60% because of the backup function. And every few weeks I charge once to 100% (when the electricity price is very low). I also think it's OK for a few weeks if the battery is not charged to 100%. With my BYD, it then takes a few days of charging up to 100% until all the cells are balanced again. As @danielclau has written, it will not harm the cells if they are not charged to 100% all the time. The battery then needs some time until the BMS estimate is correct again.

[mastameista]

Sungrow Germany PM Team recommends: Summer 20%, Winter 50% SOC-Reserve https://www.photovoltaikforum.com/thread/174702-erfahrungen-sungrow-sbr/?postID=2862068#post2862068

Reason for using SOC-Reserve Parameter: Can be set with normal account (no installer account required)

[Gnarfoz]

A note on bullet point 2: That would probably require extending the Modbus integration itself to expose the entity_registry_enabled_default and entity_registry_visible_default entity registry properties on the sensors it creates. See https://developers.home-assistant.io/docs/core/entity/#registry-properties and https://github.com/home-assistant/core/blob/2e945aed54b1dd11fdf5212805383b515a09c59f/homeassistant/components/modbus/base_platform.py#L96