The Qi Wireless Power Transfer System - Power Class 0 Specification
Part1: Parts 1 and 2: Interface Definitions Version 1.2.2
Part2: Part 4: Reference Designs Version.1.1.2
Wireless Power Transfer (WPT)
To develop international publications related to wireless power transfer (WPT) for multimedia systems and equipment, and interoperability between the WPT transmitting and the WPT receiving functions.
The scope also includes as follows:
- a Framework of Standards whereby WPT common elements and WPT technology-specific elements are coordinated;
- WPT system specifications, requirements, functional architectures, interfaces and the corresponding services, management and power control protocols for device-level and system-level operations;
- methods of measurement of power consumption and energy efficiency for WPT devices, equipment and systems.
To promote a globally harmonized usage of wireless power transfer (WPT) terms. Within scope will be WPT market-based use cases, WPT core technologies, WPT applicable regulatory frameworks and regulations, and WPT technical standards drafting needs -- as outlined in IEC TC 100 TR 62869.
Wireless Power Transfer – AirFuel Resonant Baseline System Specifcation (BSS)
This standard defines the mechanism for interoperability between a single wireless power transfer (WPT) unit transmitting function (PTU) and one or more wireless power transfer unit receiving functions (PRU(s)). This document defines wireless power transfer based on non-radiative, nearfield magnetic resonance operating at 6.78MHz over the power range ~1-100W and within maximum PTU-PRU separation distance on the order of centimeters (i.e., to distinguish from WPT technical approaches that intend multiple meter separation distances, e.g., far-field). This document defines the messaging protocol, message structure, data format and radio bearer used by the PTU and PRU(s) for session management and closed-loop power control.