Description

This task intends to act and help to test the conformance of the upcoming ISO15118-20:2022 amendments referring to bidirectional charging. Task 53 is about moving from proprietary bilateral solution to standardised, multiparty interoperability and market readiness.

In addition, it gives small countries and members, which don’t own labs or do not have a large automotive industry, the opportunity to participate in the development of  multiparty interoperable bidirectional charging common and to coordinate their activities in an international framework.

Although practically all vehicle manufacturers are interested in bidirectional charging, there are decisive regional technical differences: most EU manufacturers rely on DC charging stations – primarily because of the 3-phase network and the corresponding grid codes – and Japanese manufacturers are too (for historical CHAdeMO reasons).

US manufacturers, on the other hand, are focusing on single-phase on-board bidirectional chargers because this is how their domestic grids are designed. The path of the Chinese manufacturers is still open although by 2025, China’s technical standard system for vehicle2grid interaction shall be defined too.

As a result, every global manufacturer must eventually develop all these region-specific solutions. This means that we have to deal with both AC and DC bidirectionality in the task, including the related Grid Codes aspects. This also implies that both vehicle–charger communication and charger–grid interaction need to be harmonised across regions.

In April 2022, ISO 15118‑20:2022 “Road vehicles – Vehicle to grid communication interface” was adopted, but further specifications for distributed energy resources (DER), conformance testing and grid codes are still needed. Task 53 therefore focuses on achieving multiparty interoperability between electric vehicles, charging infrastructure and distribution system operators (DSOs), so that bidirectional charging can scale from pilots to market‑ready, globally interoperable solutions.

Objectives

To this end, Task 53 will: (i) elaborate common implementation guidelines for vehicle and charging station manufacturers based on ISO 15118‑2/-20, (ii) develop a shared understanding of charger–grid requirements and grid codes together with DSOs and TSOs, and (iii) conduct multiparty interoperability tests in specialised laboratories (e.g. JRC, Argonne, KERI, DEKRA). The task aims to provide proof of multiparty interoperable solutions (EV–EVSE–grid), supported by conformance test reports, workshops and technical documentation that can be directly used by industry and policy makers.

Of course this activity will be performed in close cooperation with existing actors (projects, initiatives, etc) in this field. Also, we do not have the objective of developing new standards.

Task Secretariat
Regina Flury von Arx – regina.flury@task53.org
c/o novatlantis gmbh, Technoparkstrasse 1, 8005 Zurich

North America Representative
Bjoern Christensen – bjoern.christensen@task53.org
c/o Next-Dimension, Danville California

Website
task53.org