What is in ISO 15118?

The ISO 15118 standard is a technical specification that defines the communication protocol for electric vehicles (EVs) and their charging infrastructure. It was created by the International Organization for Standardization (ISO) to ensure interoperability and seamless communication between EVs and charging stations.

1. Background

The rapid growth of EVs has necessitated the development of standardized communication protocols to facilitate efficient charging and ensure the safety of users. ISO 15118 was first published in 2010 and has undergone several revisions to keep up with advancements in technology and market needs.

2. Key Features

ISO 15118 specifies various features and functionalities necessary for effective communication between EVs and charging stations:

V2G Communication: Vehicle-to-grid (V2G) communication enables two-way information exchange between an EV and the electricity grid. ISO 15118 supports secure and reliable V2G communication, allowing EVs to provide energy back to the grid.

Plug and Charge: One of the essential elements of ISO 15118 is the "Plug and Charge" functionality. It eliminates the need for authentication cards or smartphone apps by establishing automated, secure communication between the vehicle and the charging station once physically connected.

Data Exchange: The standard defines the format and content of data exchanged during the charging process. This includes parameters such as charging status, charging limits, and tariff information. Standardized data exchange ensures compatibility between different EV models and charging networks.

3. Benefits and Impact

ISO 15118 offers several benefits to both EV owners and charging infrastructure providers:

Interoperability: The standard ensures that EVs can be charged at any compatible charging station, regardless of the manufacturer or charging network. This promotes a seamless and hassle-free charging experience for EV owners.

Enhanced Efficiency: ISO 15118 facilitates smart charging, enabling EVs to optimize their charging schedules based on grid conditions and tariff rates. This helps reduce peak load on the grid and enables cost-effective charging for EV owners.

Future-Proofing: The standard has been designed with future advancements in mind. It supports wireless communication technologies, cybersecurity measures, and integration with renewable energy sources, ensuring its relevance in an evolving energy landscape.

In conclusion, ISO 15118 plays a crucial role in improving the convenience, safety, and efficiency of charging electric vehicles. By establishing a standardized communication protocol, it ensures interoperability between EVs and charging infrastructure, paving the way for wider adoption of electric mobility.