IEC 63119-1:2025

Information exchange for electric vehicle charging roaming service - Part 1: General

IEC 63119-1:2025 establishes a basis for the other parts of IEC 63119, specifying the terms and definitions, general description of the system model, classification, information exchange and security mechanisms for roaming between EV charging service providers (CSPs), charging station operators (CSOs) and clearing house platforms through roaming endpoints. It provides an overview and describes the general requirements of the EV roaming service system. The IEC 63119 series is applicable to high-level communication involved in information exchange/interaction between different CSPs, as well as between a CSP and a CSO with or without a clearing house platform through the roaming endpoint. The IEC 63119 series does not specify the information exchange, either between the charging station (CS) and the charging station operator (CSO), or between the EV and the CS. This second edition cancels and replaces the first edition published in 2019.
This edition includes the following significant technical changes with respect to the previous edition:
a) the scope is expanded to include differentiation between home and visited service provider roles and adds an explicit definition of roaming entity;
b) adds definitions for "home charging service provider (home-CSP)", "visited charging station operator (visited-CSO)", and "charging detail record (CDR)", and expands related terms such as "service" and "roaming entity";
c) introduces abbreviation variants for "home-CSP" and "visited-CSO" in the terminology, aligning with North American and European conventions;
d) updates the communication protocol stack by adopting a newer TLS version (upgraded from 1.2 to 1.3);
e) system architecture and communication interfaces include detailed interactions between home-CSP and visited-CSO;
f) adds a definition for "service" to cover a broader range of applications such as parking and reservation management;
g) adds a distinction between "charging detail record (CDR)" and "service detail record (SDR)" and clarifies their relationship in the terminology;
h) enhances the description of user credential transfer methods in communication interfaces with greater diversity;
i) enhances the description of the mixed mode in the classification of roaming service models, emphasizing improved user experience through faster response times.

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