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alikante avatar image
alikante asked

BYD Ladezyklen

Hallo,

ich betreibe einen kleinen Batteriespeicher BYD B-Box 5.0 mit Multigrid, CCGX und Gavazzi 3~ Stromsensor. Das System läuft im ESS-Modus und wird AC Seitig von einem 1KW BHKW und einer 1,02kWp PV geladen. Es funktioniert alles zufriedenstellend deshalb möchte ich nun ein wenig optimieren.

Als erstes würde mich interessieren welche Daten vom BYD BMU bereitgestellt werden ?? Ich sehe zwar die aktuelle Entladetiefe an der CCGX und im VRM-Portal aber es gibt weder einen Ladezyklenzähler noch funktioniert die Restlaufanzeige.


mfg


Hello,
I run a small battery storage BYD B-Box 5.0 with Multigrid, CCGX and Gavazzi 3 ~ current sensor. The system works in ESS mode and is charged on the AC side by a 1KW MCHP and a 1.02kWp PV. Everything works satisfactorily therefore I would like to optimize a little now.
First, I would like to know what data is provided by the BYD BMU? Although I can see the current depth of unloading on the CCGX and the VRM portal, there is neither a load cycle counter nor does the remaining run display work.


regards

SOCBYD
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6 Answers
boekel avatar image
boekel answered ·

Did you look into the remote console? there might be things to be found if you look into the batteries menu?

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byd-service avatar image
byd-service answered ·

Hello Alikante,


We don´t count or provide cycles as we measure the life of the battery as energy throughput. We have an internal Ah counter for warranty purposes in each BMS but this is not reported as the VRM already report the energy on the AC side.


What do you need this counter for?

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alikante avatar image
alikante answered ·

Hi,

@Boekel thanks for your answer. Unfortunately only this is shown by Remote/CCGX



@BYD_service dont realy need the cycle counter, it was only nice to have :-) .But without any counter, how can I calculate the efficiency of charging and discharging? And why is the
Remaining time empty ?


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byd-service avatar image byd-service commented ·

You can check the energy throughput by downloading the detailed data report from VRM.

Regarding the ´time to go´ function, I´ve never seen it in use but for sure it is not provided by the CANBUS so you will not get any information there.

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alikante avatar image alikante byd-service commented ·

Hi,

the detailed data report from VRM tells me last 30days 184kWh charging and 132kWh discharging.

72% efficiency, cant be right ??

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byd-service avatar image byd-service alikante commented ·

The real efficiency will probably be about 85%

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alikante avatar image alikante byd-service commented ·

Hi,

@BYD_service where do the deviations come from? 72%<>85% that's not all !

It may be that the "critical loads" are not included ?

regards

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byd-service avatar image byd-service alikante commented ·

I'm sorry I cannot help you with that as it depends on many more components than our batteries. The batteries DC roundtrip efficiency should be about 95%. The efficiency on the AC side would depend on the design, installation, the inverter and even the measurement accuracy.

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alikante avatar image
alikante answered ·

ok next question,

the firmware my MultiGrid 48/3000/35-50 is 2690413.

I want to load the Assist for AC-current sensor an for ON/Off Relais for Generator.

So i start the VE.Configure tool and this tool says there is an newer ESS Assist but i cant load this because firmware is to old.
Does the new ESS Assistant have any advantages? And where do I get the necessary firmware?

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boekel avatar image boekel ♦ commented ·

https://www.victronenergy.com/live/updating_firmware:updating_ve.bus_products

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alikante avatar image alikante commented ·

no Idea ??

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boekel avatar image
boekel answered ·

2690455.txt


rename to .vff
here is the source:
https://professional.victronenergy.com/

any installer / dealer can also give it to you.


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alikante avatar image
alikante answered ·

many thanks @Boekel

the Multigrid now have the latest Firmware and ESS Assistant.

In addition, I have installed the assistant for generator start/stop and AC sensor

Because the Generator is a micro chp ( 1KW on Victron AC1 out ) i turn it off only at SOC over 90% and under 50% again on.

Now i have 3 new questions :

The newly installed AC sensor report 83 watts without power at the wire . Is this a bug ?

And is there a way to switch the icon from PV-Inverter to Generator at the CCGX ?

I have also switch on the "have DC-System" ( have DC-DC for Server, Switch and so on ) at CCGX but there is no icon, why ?

regards


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Related Resources

Victron BYD battery compatibility guide

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