ISO 15118 info page

Generally understandable information about the communication standard between electric vehicles and charging stations

Standardisation flow in general

During each standardisation process under the leadership of the ISO, a document to be standardised undergoes different statuses, starting with a proposal for a standard (New Working Item Proposal - NWIP), which in the best case is accepted (Working Draft - WD), continuing on to a committee draft (CD) and a draft for an international standard (DIS) to the final design (Final Draft for International Standard - FDIS), to which ultimately only editorial changes may be made, until the international standard (IS) is finally agreed upon. There is a some flexibility in that there may be a second CD after the first CD. More information about this process can be found on the DIN website. In October 2014 it was decided by the ISO that an FDIS is no longer necessary and thus a DIS may be the direct precursor to the IS, with an extended timeline for the completion of a DIS.

In accordance with the ISO rules, each stage may take only a certain period of time until the next stage must be reached, as otherwise the standardisation process is stopped. It is also possible to apply for an exception, as was done in the case of parts 4 and 5, among others, as the standardisation process for the test suites had been delayed due to a change of personnel. A graphical timeline of these standardisation stages can be found in this PDF here, which was created by the VDA (German Association of the Automotive Industry):

Standardisierungsprozesse ISO_CEN (VDA) Standardisierungsprozesse ISO_CEN (VDA)

Status of the ISO 15118 standard 

An overview of the document structure of ISO 15118 as well as the (planned) status is given in the following table. Ed.1 stands for edition 1, Ed.2 for edition 2. The time spans given per standardisation phase (CD, DIS, etc.) in the table below describe the commenting phases. Work on edition 2 was begun in early 2016. As can readily be seen, the first 5 parts deal with the conductive (i.e. wired) charging, while parts 6 to 8 are dedicated to inductive (wireless) charging and wireless communication and build on the first three parts and extend these where necessary. As part of edition 2, part 6 will be incorporated into part 1 and part 7 will be incorporated into part 2. I will try to always keep the dates for the status up to date.

The DIS version is usually the first version of a standard that is publicly available and, for example, can be purchased via the websites of the ISO, DIN or the Beuth Verlag.

Conductive charging

PartTitleCurrent statusPlanned status
1General information and use case definitionEd.1: IS (04/13),
Ed.2: CD (08/16 - 10/16)
Ed.2: DIS (03/17 – 08/17), FDIS (12/17 – 05/18), IS (11/18)
(FDIS can potentially be skipped)
2Network and application protocol requirementsEd.1: IS (04/14),
Ed.2: CD (04/16)
Ed.2: CD2 (03/17-04/17), DIS (09/17 – 01/18), FDIS (08/18 – 10/18), IS (12/18)
3Physical layer and data link layer requirementsEd.1: IS (05/15)No new version in edition 2 planned. Part 8 will therefore remain. 
4Network and application protocol conformance testEd.1: DIS (09/16 - 02/17)Ed.1: FDIS (07/17 - 10/17), IS (12/17)
5Physical layer and data link layer conformance testEd.1: DIS (04/16 - 09/16)Ed.1: FDIS (04/17 - 06/17), IS (09/17)


Inductive charging

PartTitleCurrent statusPlanned status
6General information and use-case definition for wireless communicationWill be integrated into part 1 with edition 2 
7Network and application protocol requirements for wireless communicationWill be integrated into part 2 with edition 2 
8Physical layer and data link layer requirementsfor wireless communicationEd.1: DIS (04/16 - 08/16)Ed.1: FDIS (04/17 - 08/17), IS (10/17)