Learn the difference between them!
You have certainly heard about Plug & Charge (ISO 15118 ) and Autocharge. The methods for authorising an EV for charging keep arising, yet the confusion among consumers persists.
Today we’re unraveling the differences between these two methods and the pros and cons of each.
The similarities between Plug & Charge and Autocharge
Both Plug & Charge and Autocharge eliminate the need for RFID cards (or any other method, such as credit cards), which are the most widespread method of EV charging authorisation.
But what is the problem with RFID cards and other methods?
Besides not being as convenient to the users, because they have to carry a card at all times, ‘EV charge cards’ (RFID cards) are easily replicable, making them less secure.
So, both of these methods counteract the disadvantages of RFID cards by offering a better experience in terms of security as well as user-friendliness.
The differences: Autocharge VS Plug & Charge
Autocharge
With Autocharge, as soon as an EV equipped with a CCS or NACS connector is plugged into a charging station, the station receives the unique identifier from the EV (such as its MAC address – Media Access Control or its VIN – Vehicle Identification Number) and starts the charging session. No need for cards or apps.
Since it is quite simple in terms of infrastructure for CPOs to use this method, it may be less costly. This method requires a CCS or NACS connector in electric vehicles.
Plug & Charge
Plug & Charge, as defined by ISO 15118, is a bit more complex and secure in terms of communication between the EV and the charging station, while still offering great user experience (no need for cards or apps).
This method offers more data security, due to its cryptographic methods of communication with the EV and to the use of digital certificates. It also requires a CCS or a NACS connector in vehicles. Besides, requires EVs and chargers to support Plug&Charge from ISO 15118, a certification that will probably be the norm in the future, and sees increasing adoption.
Speaking of adoption…
Each of these EV charging authorisation methods require that the vehicle, charger and CPO backend support them , which means none of them is, at the moment, completely universal. However, Plug & Charge, since it uses the ISO 15118 protocol specifications and is part of a global standard, is closer to being adopted by more and more vehicle and charger manufacturers.
The table below shows the connector, vehicle and charger requirements for each of the EV charging authorisation methods.
Conclusion
i-charging is one of the first and few EVSE checked and validated by Hubject with Plug & Charge, but we support both authorisation methods individually or simultaneously, which makes blueberry a perfect and flexible solution for any need. Check out our blueberry chargers here.
Pro tip
Identifying Autocharge or Plug & Charge EV chargers is currently a hurdle for EV drivers. Differentiate your charging station by easily identifying which charging authorisation methods it supports.
How? Include this information in the display! Our blueberry line is personalized to your brand’s needs, so take full advantage!
