What is the difference between IEC 61851 24 and ISO 15118 ?

Title: The Differences Between IEC 61851 and ISO 15118 for EV Charging Infrastructure

Introduction:

Electric vehicles (EVs) have become increasingly popular in recent years, and as a result, the need for standardization and interoperability in charging infrastructure has increased. Two key international standards that address these needs are IEC 61851 and ISO 1511In this article, we will explore the differences between these two standards and their respective roles in the EV charging infrastructure.

IEC 61851: The Global Standard for EV Charging Infrastructure

IEC 61851, formally known as Electric Vehicle Conductive Charging System, is an international standard developed by the International Electrotechnical Commission (IEC) that primarily focuses on defining the charging modes and related requirements for EVs. IEC 61851 specifies the different charging modes available for electric vehicles, addressing aspects such as voltage levels, current limits, and charging connectors.

IEC 61851 defines several charging modes, including Mode 1, Mode 2, Mode 3, and Mode Each mode corresponds to different charging capabilities and requirements. For example, Mode 1 refers to a basic level of charging using a standard domestic socket, while Mode 4 represents fast-charging stations with high-power output capable of delivering energy quickly.

However, IEC 61851 does not cover the communication interface between EVs and charging infrastructure. This is where ISO 15118 comes in.

ISO 15118: The Global Standard for EV Charging Infrastructure Communication

ISO 15118, also known as Road Vehicles - Vehicle-to-Grid Communication Interface, is an international standard developed by the International Organization for Standardization (ISO) that focuses on the communication interface between road vehicles, commonly electric vehicles (EVs) and the power grid. This standard enables smart charging and bi-directional energy transfer between EVs and the grid, allowing for optimized charging, grid management, and vehicle-to-grid services.

ISO 15118 is built upon the ISO 9141-2 standard, which defines the communication protocol between the vehicle and the charging infrastructure. This standard consists of several parts, including ISO 15118, ISO 15765-4, and ISO 19165.

Differences between IEC 61850-24 and ISO 15118

The main difference between IEC 61850-24 and ISO 15118 lies in their scope and application. IEC 61850-24 primarily deals with communication networks and systems within power utility automation, covering a wide range of applications and devices involved in power system operations.

ISO 15118, on the other hand, primarily focuses on the communication interface between vehicles and the power grid, addressing the specific needs of electric vehicles. This standard facilitates efficient and intelligent charging, load management, and integration of EVs into the broader energy ecosystem.

Conclusion:

In conclusion, IEC 61851 and ISO 15118 are two key international standards that address the charging infrastructure for electric vehicles. While both standards are essential for ensuring interoperability and efficient charging, they serve different purposes. IEC 61851 primarily focuses on defining the charging modes and related requirements for EVs, while ISO 15118 focuses on the communication interface between vehicles and the power grid.

With the growing popularity of EVs, it is essential to establish global standards for EV charging infrastructure to ensure compatibility, safety, and efficiency. By leveraging the strengths of both IEC 61851 and ISO 15118, we can create a more robust and sustainable EV charging infrastructure that meets the needs of stakeholders and benefits society as a whole.