What is IEC 61851-2

Introduction

IEC 61851-2 is an international standard that defines the requirements and characteristics

for the conductive charging of electric vehicles (EVs). This standard focuses on the AC

(Alternating Current) charging mode, which is the most commonly used method for EVs.

Technical Specifications

The IEC 61851-2 standard specifies various technical parameters that must be adhered to.

These include maximum voltage and current levels, communication protocols, and safety

features. The purpose of these specifications is to ensure interoperability between different

charging equipment and safeguard both the vehicle and the user during the charging process.

Key Features

One of the key features of IEC 61851-2 is the support for different charging modes. This

includes Mode 1, where the EV is charged using a standard domestic socket; Mode 2, where

additional safety features are added to Mode 1 chargers; Mode 3, where dedicated charging

equipment is used; and Mode 4, where fast charging stations are utilized.

Another important aspect of this standard is the requirement for communication between

the charging station and the vehicle. This enables the exchange of information such as

charging status, authentication, and billing data. It also supports the implementation of smart

grid functionality, allowing the vehicle to interact with the power grid and optimize charging

based on factors like energy demand and availability.

Benefits and Impact

IEC 61851-2 plays a crucial role in the widespread adoption of electric vehicles. By

establishing common technical standards, it ensures compatibility between various charging

stations and vehicles, making it convenient for EV owners to find and use charging facilities.

Furthermore, this standard promotes safety by specifying requirements for insulation and

protection against electric shocks. It also supports the integration of renewable energy sources

and advanced smart grid systems, contributing to a more sustainable and efficient charging

infrastructure.

In conclusion, IEC 61851-2 is an essential standard that outlines technical requirements

for the conductive charging of electric vehicles, particularly in AC charging mode. By

establishing interoperability and safety guidelines, it paves the way for a reliable and

efficient EV charging infrastructure. Its impact extends beyond convenience for EV owners,

enabling a greener and smarter transportation ecosystem.