Quote:
Originally Posted by GoingElectric
I had a quick read up about OCPP and I'm a little confused about the benefits for an individual consumer such as myself?
I can understand the standardisation benefits of OCPP for charger manufacturers, software developers and charging network operators, but does it directly benefit someone who just wants to charge their car at home overnight for example? Genuinely interested to understand this as I still have time to cancel my Ohme Home Pro installation and go with an alternative if OCPP is a benefit not to be overlooked. TIA.
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Tariffs such as Octopus Intelligent now offer cheap charging slots; however, either the car (eg; Tesla) or the EVSE needs OCPP. MyEnergi is in contact with Octopus re the possibility of updating either their hub or the Zappi 2 with OCPP.
https://octopus.energy/intelligent-faqs/
The iX3 has an on board charger which converts AC to DC with a maximum charging rate of 11kWs. The iDrive will allow you to set offpeak/delayed charging periods (eg; for Octopus Go from 0030 to 0430). In other words, there is actually no need for a smart EVSE Alternatively, an EVSE such as Zappi can charge in various modes from Eco+ (solar diversion) to FAST (7/11kWs depending on whether you have a single or 3 phase supply). The EVSE itself is just a power supply with a communications module. If delayed charging is set up in the iX3, then when the EVSE is plugged in a charge will start and then stop until the start of the delayed charging period. In this case, the iX3 will communicate with the EVSE when it wants the charge to restart. The EVSE is left on FAST charge.
Alternatively, some EVSEs such as the Zappi can be programmed via an App. For example, I can set offpeak boost periods to coincide with the cheap periods. If these set, then I leave the IDrive set up to take an immediate charge. Setting delayed charging in both the EVSE app and the car is a recipe for confusion.
The other forms of charging for the iX3 are rapid and ultra rapid DC charging. In this situation, you have a much bigger plug and the charge is initiated; monitored and stopped by the rapid charger itself.
Future EVSEs require built in demand side response so that the ‘Grid’ can reduce power at certain peak times.
Chargers such as Ohme can also access tariffs such as Octopus Agile. This was very popular a year ago but these days there are very few price plunges so EV charging becomes expensive.
Finally, and this is where it gets a bit complicated. Maximum range in Winter requires battery conditioning prior to departure. The iX3 has inbuilt settings to make this possible but it can be complicated if the EVSE App is used. For example, if I was leaving home at 7.30 am tomorrow my preference would be to leave the EVSE on FAST and then set a departure time of 0730 in the iDrive along with my delayed charge start/stop time. The battery preconditioning can start up to 3 hours prior to departure. Unless the iX3 is different to the i3 (I have yet to find out), battery conditioning has to be set up in the iDrive. The preconditioning selection in the App relates to cabin conditioning which starts about 30 minutes before departure.