What is the difference between ISO 15118 and OCPP ?

Title: Understanding the Differences Between ISO 15118 and OCPP for EV Charging Interoperability

Electric vehicles (EVs) have become increasingly popular in recent years, and as a result, the need for standardization and interoperability in the EV charging infrastructure has increased. ISO 15118 and OCPP are two important standards that play a crucial role in ensuring EV charging infrastructure compatibility and standardization. In this article, we will explore the differences between these two standards and their implications for EV drivers.

ISO 15118: The Communication Standard for EV Charging

ISO 15118 is an international standard that defines a communication protocol for EV charging stations. It specifies the methods and procedures for exchanging charging station and vehicle-mounted equipment (VM) information, including the payment methods used for charging.

ISO 15118 aims to ensure that EV charging stations can communicate with EV vehicles and charging stations, allowing for seamless integration and interoperability. It also promotes the use of standardization and branding, which can help reduce the complexity and cost of EV charging infrastructure.

OCPP: The Open Charge Point Protocol

OCPP is a protocol for the communication between charging stations and EV vehicles. It allows charging stations to manage the charging process and provides a standardized method for communicating between charging stations and EV vehicles.

OCPP aims to promote interoperability between charging stations and EV vehicles, making it easier for drivers to charge their vehicles at any charging station. It also enables charging stations to manage the charging process more efficiently, reducing the time spent waiting for charging.

Differences between ISO 15118 and OCPP

While both ISO 15118 and OCPP are involved in the interoperability and communication aspects of EV charging, they have distinct differences. Here are some of the key differences:

Scope: ISO 15118 is primarily focused on the communication protocol for EV charging stations, while OCPP is broader in scope, including the charging process and communication between charging stations and EV vehicles.

Methodology: ISO 15118 specifies the methods and procedures for exchanging charging station and vehicle-mounted equipment information, while OCPP defines the communication protocol between charging stations and EV vehicles.

Payment methods: ISO 15118 specifies payment methods used for charging, while OCPP allows for a wider range of payment methods to be used.

Branding: ISO 15118 promotes the use of standardization and branding, while OCPP encourages the use of open standards and collaboration between charging station manufacturers and vehicle manufacturers.

Conclusion:

ISO 15118 and OCPP are two important standards for EV charging infrastructure interoperability. While both standards are focused on ensuring the compatibility and standardization of EV charging, they differ in their scope, methodology, payment methods, and branding.

ISO 15118 is primarily focused on the communication protocol for EV charging stations, while OCPP is broader in scope, including the charging process and communication between charging stations and EV vehicles. While both standards promote interoperability and collaboration between stakeholders, they may not always be compatible, and users should carefully consider the specific requirements of their EV charging infrastructure before selecting a standard.