question

michaelvh avatar image
michaelvh asked

Victron EV charging station + ESS configuration possibilities

Hi guys, this may be a question for the Victron team. I am looking to purchase the new EV charging station, but i have some questions on how it can be configured together with a grid bound ESS system, i could not determine the answer myself on the available documentation or video.

This i was able to find: In automatic mode it will only use excess energy when the home battery is fully charged, and in off grid systems it is possible to set a minimum SOC for the home battery.


My questions:

1. Is it possible to set a minimum SOC for the home battery in a grid bound ESS system before the EV charger kicks in? For example, when the ESS minimum SOC is lets say 20% before getting power from the grid, can the minimum SOC for the EV charger be set at 50% at the same time? In this case the EV charger would use the home battery from 100% to 50%, and the remaining 50% to 20% would be reserved for domestic use at night. Would the EV charger stop using the home battery at set SOC, and only solar power afterwards?


2. A follow up question. Would it then be possible to set the maximum power drain from the home battery? Lets say while charging the EV, it will use all available solar, and only XXX watts from the home battery? This so some reserve power is available for domestic use without having to use the grid.


Thanks!

Michael

ESSSOC
4 comments
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sladek-cz avatar image sladek-cz commented ·

Hi

I work externally for a supplier company in the Czech Republic and they test and configure your products for their customers. I have a few questions and observations about your EV charger product.

I would like to be able to set the minimum charging current in automatic mode so that the charger does not turn off because of every cloud. The endless replay makes this mode unusable.

We have customers who would welcome a different algorithm in automatic mode because they are not allowed to supply surplus to the network.

Is it possible to pair the charger via GX AP point? Or is a router with internet necessary?

I can't seem to find the "Auto ON Grid" tab.


Thank you in advance for your reply.

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Hi,
The minimum current allowed by the vehicles for charging is 6A, can't be lower than this. So event if we make configurable, it can't be lower than 6A, that's a limitation on all the vehicles.
For charging algorithm, yes, we are working on a different one, not related to grid feed in.

Yes, the EVCS can be connected to GX AP but also the opposite, connect GX to EVCS AP

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michaelvh avatar image michaelvh Lucian Popescu (Victron Energy Staff) ♦♦ commented ·
Tesla's vehicles can take 5A on both 1 phase and 3 phase charging. Their charging stations and mobile chargers do it as well. Maybe consider the option to configure down to 5A? As they own a big chunk of the EV market.
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Hi, not all Teslas are acceping 5A, it depends on the model and manufacturing year. Mine for example is not accepting 5.

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12 Answers
Lucian Popescu (Victron Energy Staff) avatar image
Lucian Popescu (Victron Energy Staff) answered ·

Hi, At this moment, the charging station starts charging only when there is energy export into the grid. In a normal ESS, that's happening only when the battery is full. We are planning to add a new algorithm for off-gird that will work based on battery levels, and maybe we can also apply it in ESS.

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michaelvh avatar image michaelvh commented ·

Ok thank you, sounds good. Keep us up to date on that, would be very interested in those specific control settings. IMO would make it a superior product compared to other smart EV charging stations.

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Sure! Order the product and I can add you to the beta-testers group.
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Rene Mullie avatar image Rene Mullie Lucian Popescu (Victron Energy Staff) ♦♦ commented ·
@Lucian Popescu (Victron Energy Staff) : I just received the EV charger and installed it, will not see car/ start charging.

Can you add me to BETA group so I can seek support over there? Thx!

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Lucian Popescu (Victron Energy Staff) avatar image Lucian Popescu (Victron Energy Staff) ♦♦ Rene Mullie commented ·
Hi Rene, can you please update it to the latest firmware?

Also, please update the GX to the latest BETA.

Please keep me posted

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canarias avatar image canarias commented ·

We are planning to add a new algorithm for off-gird

Hello Lucian, that's interesting indeed. But will this algorithm be able to differentiate between Li and Pb systems? Lithium should be easy, but within lead-acid systems absorption times have to be considered additionally to prevent constant PSOC states. I guess this is a bit more complex than just using the SOC state, isn't it? Just wanted to mention that.

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Hi, yes, battery charging should have priority, especially for lead-acid
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pampalasek-cz avatar image
pampalasek-cz answered ·

Hello Lucian - Im from czech Republic - i have 1piece of EV charger with firmware V3.3/1.19-beta-14 connected to my system with 3pcs Quattros 10000 and 2 Fronius Symo 20.0-3 , i see EV charger at my vrm account and at remote console , but not possible to charge EV cars - Car NOT connected ( try some cars - same problem ) , Cerbo version 2.85 , can you help me with please? My email is : info@svabi.cz , thank you so much , Pampalasek_CZ

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Hi, please add me as admin on your VRM system, so I can have a look - lpopescu@victronenergy.com

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Lucian Popescu (Victron Energy Staff) avatar image Lucian Popescu (Victron Energy Staff) ♦♦ Lucian Popescu (Victron Energy Staff) ♦♦ commented ·
@Pampalasek_CZ Can please check again? It should be ok now
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pampalasek-cz avatar image
pampalasek-cz answered ·

Thank you so much, at now i search for some EVs ... dont have at home.. i write answer to your email when i check it

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Lucian Popescu (Victron Energy Staff) avatar image
Lucian Popescu (Victron Energy Staff) answered ·

Please keep me posted!

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pampalasek-cz avatar image
pampalasek-cz answered ·

Hi Lucian , at now i test with Enyaq - car is detected - next step done :D , but not start charge because Low SOC Limit , at my FV have full Batteries at 100% , but charger 279608210-557895132418790-2580457485213771137-n.jpg


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Hi, is it a stand-alone device? or part of a victron system? If it's part of a victron system, please follow this steps:

For the ev charger, go to settings, general, modbus tcp server, and in there, fill the ip address of the GX device
Then on the GX device, go to setting, services, and enable modbus.
Please keep me posted!

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pampalasek-cz avatar image
pampalasek-cz answered ·

yes , its part of huge Victron system, in Charger web browser i have ip Cerbo gx by discover function and saved , at cerbo i have this fail 279466496_589164349469272_3336459484180363284_n.jpg


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ok, can you add me as admin on that vrm system? lpopescu@victronenergy.com
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pampalasek-cz avatar image
pampalasek-cz answered ·

you have from yesterday - name Pampalasek

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I emailed you.
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pampalasek-cz avatar image
pampalasek-cz answered ·

Awesome NEWS - Lucian GOT IT! First EV Victron Charger work perfectly at Czech Republic - it is first test piece - for now i wait for Enyaq when come with lowest SOC because when i tested have 98 SOC - i took some photos and posted here , very thanks him


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Happy to help!
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Rene Mullie avatar image
Rene Mullie answered ·

First review: after some issues with getting updated to the right EV firmware version in combination with the Cerbo FW version I got it up&running perfectly! Thanks for your help Lucian! Next steps will be fiddling with the rest of the system in conjunction with the auto-charge option.


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Happy to help!
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nuxland avatar image
nuxland answered ·

Will it possible to tell EV-Charger to charge from the grid and not from the battery if I have grid connected ESS system with Gerbo GX?
This would be helpfull when there is very low €/kwh price for few hours.

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Lucian Popescu (Victron Energy Staff) avatar image
Lucian Popescu (Victron Energy Staff) answered ·

Hi, the charging station is the same as any other AC consumer, so it depends on how your ESS system is configured

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nuxland avatar image nuxland commented ·
Ok, lets say that PV is generating 5kw and house is consuming 2kw, then 3kw is used for charging batteries (Batteries are at 50%) And I want now charge my car with 11kw from the grid, because price is 0,02€/kwh.

if i start manual charging with 11kw, then 3kw is taken from PV and remaining 8kw from battery, because my gridsetpoint is 30W default.

yes i can set gridsetpoint to 11kw and then it works as intended, but i have to remember to set it back to 30w when carging of EV finishes.

my questin was, can i set some mde in charger, so it is automatic :)

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sladek-cz avatar image
sladek-cz answered ·

Ahoj


Externě pracuji pro dodavatelskou firmu v ČR a testuji a konfiguruji vaše produkty pro její zákazníky. Mám několik otázek a postřehů ohledně vašeho produktu nabíječky EV.


Chtěl bych mít možnost nastavit minimální nabíjecí proud v automatickém režimu, aby se nabíječka nevypínala kvůli každému cloudu. Nekonečné opakování dělá tento režim nepoužitelným.


Máme zákazníky, kteří by uvítali jiný algoritmus v automatickém režimu, protože nesmějí dodávat do sítě přebytky.


Je možné spárovat nabíječku přes GX AP point? Nebo je nutný router s internetem?


Nemohu najít konfigurační kartu "Auto ON Grid".


Předem děkuji za odpověď.

s pozdravem Sládek

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