The Current Status of Electric Vehicle Charging Station Standards
Electric vehicle charging standards help address two very distinct parts of EV charging systems –
1. The physical infrastructure or hardware such as plugs, sockets, connectors, cabling etc.
2. The communication protocols for grid connectivity, billing, and payment automation.
Europe & America are in Agreement
While there are several different electric vehicle charging standards used across the world such as Combined Charging Standard (CCS), Tesla Supercharging system and CHAdeMO standard, they cater to specific manufacturing specifications, and rely on proprietary communication networks to stay operational. CCS however has a strong backing in both Europe and the US.
This simply means that not all public EV charging stations are compatible with a specific EV model, making it difficult for EV owners to stay on the road a longer period of time, without finding a proprietary charging station from their subscriber network.
The Latest in Electric Vehicle Charging Standards
The recently published International Standard for EV d.c. (direct current) fast charging by the IEC, comprises two parts – one that covers control and communication connectivity mechanics and the other governing digital protocols for communication between the EV and the off-board fast charging station (d.c).
This internationally applicable standard is available across three safe charging systems: CHAdeMO COMBO1 and 2, and CATARC, which are in fact interoperable, offering a reliable alternative to proprietary charging systems based on different technologies.
Charging stations powered by the new standard are expected to take just about 20 minutes to generate the 16 kWh of electricity usually required for a 100 km drive, charging batteries about 8 times faster than on-board powering solutions which can utmost offer 6.2 kWh, just enough to cover 40 km. The global standard is a result of collaboration between automotive firms, utility companies, as well as original equipment manufacturers across the world.
Electric Vehicle Charging Standards – The OCPP
With evolving electric vehicle charging standards, and the emergence of an International Standard for d.c fast charging, the Open Charge Point Protocol (OCPP) that makes it possible for public EV charging stations compatible with all types of EVs can now be fine-tuned to comply with these standards. Charging stations can also adopt OpenADR protocols that automate the demand response to limit the overload on the grid in times of peak demand from EVs by offering discounted charging prices during the off-peak hours.
Electric vehicle charging standards and the OCPP now ensure that investments in charging infrastructure and the services offered to EV owners still stay on track, even if the service provider goes out of business.
Find out more about Electric Vehicle Charging Stations.