Charging Standards of DC EV Charging Station

2022-11-14 15:30:45  Resource

What is IEC Standard?

The International Electrotechnical Commission (IEC) authors international standards for all electrical, electronic and related technologies. This standards collection addresses product development, performance, compatibility and related topics in order to ensure product compatibility and environmental safety.


IEC International Standards are essential for quality and risk management; they help researchers understand the value of innovation and allow manufacturers to produce products of consistent quality and performance. Therefore international standards also form the basis for testing and certification. 


So When it comes to the production of DC EV Charging Stations, what are the common charging standards we should follow?


IEC 62196

Plugs, Socket Outlets, Vehicle Connectors and Vehicle Inlets – Conductive Charging of EVs


The IEC 62196 charging standard defines different modes of conductive charging depending on how the power is transferred to the vehicle and the required protection and communication protocol that can be used.

Mode 4

> DC and AC charging with high-level communication

> Off-board charger enables very fast charging speeds for DC charging


IEC 61851

Electric Vehicle Conductive Charging System


IEC 61851 is a standard for electric vehicle conductive charging systems, covering the characteristics and operating conditions of the EV supply equipment, the specification of the connection between the EV supply equipment and the requirements for electrical safety for the EV supply equipment.


IEC 61851-1 General requirements

IEC 61851-23 DC electric vehicle charging station

IEC 61851-24 Digital communication between a DC EV charging station and an electric vehicle for control of DC charging


Communication EV to EVSE

ISO 15118

Road Vehicles - Vehicle To Grid Communication Interface


The standard defines a high-level communication protocol for EVs and charging stations to charge/discharge the EV’s high-voltage battery. It covers processes like AC and DC charging, charging with pantographs and wireless charging. Vehicle-to-grid communication enables grid stabilization.


DIN SPEC 70121

Digital Communication Between a DC EVSE and an EV for Control of DC Charging in the CCS


This standard defines the communication between a DC charging station and the electric vehicle. It is a German predecessor of ISO 15118-2. This standard specifies the requirements for the communication protocol for DC charging and communication with the supply system.


Communication EVSE to CSMS

Open Charge Point Protocol (OCPP)

Since the Open Charge Alliance (OCA) has defined OCPP in order to make EV networks open and accessible, OCPP has become a standard protocol. The protocol allows the communication between EV charging stations and charging management systems. It is used by the most suppliers of EVSEs and charging management systems. Currently, OCPP 1.6J is the most used version. OCPP 2.0.1 is the newest version and comprises additional features, like improved security and configurability. 


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