(R) Use Cases for Wireless Charging Communication for Plug-in Electric Vehicles
|Publication Date:||1 April 2021|
This SAE Information Report SAE J2836/6 establishes use cases for communication between plug-in electric vehicles and the EVSE for wireless energy transfer as specified in SAE J2954. It addresses the requirements for communications between the on-board charging system and the wireless EV supply equipment (WEVSE) in support of detection of the WEVSE, the charging process, and monitoring of the charging process.
Since the communication to the charging infrastructure and the power grid for smart charging will also be communicated by the WEVSE to the EV over the wireless interface, these requirements are also covered. However, the processes and procedures are expected to be identical to those specified for V2G communications specified in SAE J2836/1.
Where relevant, the specification notes interactions that may be required between the vehicle and vehicle operator, but does not formally specify them. Similarly, communications between the on-board charging sub-system and the on-board vehicle electronics is not formally specified in this document.
This document will be published as a set of steps. The intent of step 1 was to record as much information on "what we think works" and publish. The intent of step 2 is to provide refinement and missing pieces to step 1, with a an eye to early testing.
This version is step 2, with the aim of providing a communication protocol for home chargers.
The purpose of SAE J2836/6 is to specify the use cases and communications requirements that will allow access and control to magnetic field wireless power transfer (MF-WPT) for EV charging systems that comply with SAE J2954, independent of the precise technology used in implementing the wireless charging system.
SAE J2847/6 specifies the functional messaging required to support the use-cases and required in this document.
SAE J2931/6 specifies and profiles the protocols that will be used to communicate the messages between the EV and WEVSE.