DIN IEC/TS 61851-26:2025-10 - Draft

This document in combination with IEC 61851-1 or IEC 61851-23, gives the requirements for EV supply equipment with automatic docking and undocking functions (aEVSE) at the underbody of electrically propelled road vehicles according to ISO TS 5474-5. Use of aEVSE with the megawatt charging system is under consideration. This document provides requirements for aEVSE with a single vehicle connector or a single socket-outlet. Requirements for aEVSE with more than one vehicle connector or more than one socket-outlet are under consideration. This document only applies to automatic couplers of category 3, located at the underbody of an electric vehicle. This document does not apply to automatic coupler of category 1: using a vehicle coupler defined by IEC 62196-2, IEC 62196-3 or IEC TS 62196-3-1. This document does not apply to automatic couplers of category 2: using an electro-mechanical interface defined by EN 50696. EN 50696 also specifies automatic couplers located at the underbody of an electric vehicle. However, these couplers only provide DC power transfer. At the time of publication of this document, automatic conductive energy transfer is still in an early development stage. The intention of this document is to guide further development of the technology. At the Technical Specification, it is possible this document does not yet contain the full specification for interoperability as needed especially for public applications. Automatic docking is indispensable for autonomous vehicles, and it is also helpful for disabled users of electric vehicles and for all users of electric vehicles seeking additional comfort. In the case of public electric vehicle supply equipment, automatic docking can also provide a convenient solution for queued vehicles, through automatic electric vehicle supply equipment that is either fully mobile or movable on rails. Automatic docking can increase the number of electric vehicles that are available to the grid to provide grid services.