IEC 63245-1 pdf – Spatial wireless power transfer based on multiple magnetic resonances – Part 1: Requirements
1 Scope
This part of lEC 63245 specifies requirements for spatial wireless power transfer based onmultiple magnetic resonances(SWPT-MMR), which is a non-radiative wireless power transfer(wPT). This document contains two categories of requirements: general requirements andfunctional requirements. The general requirements cover charging “procedures and chargingzones. The functional requirements cover ‘ each component of a swPT-MMR system, suchastransmitter coils.
2Normative references
There are no normative references in this document.
3Terms，definitions,and abbreviated terms
For the purposes of this document, the following terms and definitions apply.
ISO and lEC maintain terminological databases for use in standardization at the followingaddresses:
.IEC Electropedia: available at http://www.electropedia.orgl
.Iso Online browsing platform: available at http://www.iso.orglobp3.1 Terms and definitions
3.1.1
null point
point or area in the charging zone where the magnetic field cancels out almost entirely or isbelow a certain specified minimum
3.1.2
quiet zone
magnetic field having an equalized energy density corresponding to each of the magnetic fieldsformed on the transmitter coils
3.1.3
spatial wireless power transfer
concept of wireless power transfer between multiple sources and multiple receiving devicesplaced at a certain distance in various positions and postures within a space
Note 1 to entry. “SpatialMmeans that receiving devices will take various positions and postures,and will lead tovariable transfer efficiencyincluding almost zero percent. This situation can occur when receiving devices are placedfar apart from the power source and are freely rearranged.
[SOURCE:IEC 62827-3:2016,3.1.2,modified – ln the definition, “receiving devices placed ata certain distance in various positions and postures within a space” replaces “receiving deviceswhich are placed at a distance within a spatial space”.]
3.1.4
spatial wireless power transfer system
group implementing spatial wireless power transfer in which the power source can deliver powerand data to the power-receiving device
Note 1 to entry: ln special cases，a spatial wireless power transfer system can consist of only a single power sourceand only a single power-receiving device.
Note 2 to entry: Spatial wireless power transfer system includes the case in which a power source has the abilityto access a power-receiving device through a relay from other power sources when the power source attempts todeliver data to the receiving device. In this document, “data”means control and management data for wireless powertransfer.
[SOURCE: IEC 62827-3:2016,3.1.3]
3.1.5
transmitter coil
component of a wireless power transmitter that converts electric current to magnetic flux
[SOURCE: IEC 63006:2019,3.1.48]
3.2Abbreviated terms
2D
two-dimensional
3D
three-dimensional
swPT
spatial wireless power transfer
sWPT-MMR
spatial wireless power transfer based on multiple magnetic resonances
WPT
wireless power transfer
4overview of spatial wireless power transfer
IEC TR 62869 describes types of WPT physical layer technologies. Among the technologies,electromagnetic induction and magnetic resonance technologies are dominantly used in recent
industries. The IEC PAS 63095~and wPC Qi series specifies WPT based on electromagneticinduction technology，whereas IEC 63028 specifies WPT based on magnetic resonancetechnology.
Aspatial wireless power transfer(SWPT)system delivers the electronic power to one or more
receivers within a spatial space. Figure 1 shows a conceptual image of SWPT described inIEC 62827-3.
Spatial wireless power transfer based on multiple magnetic resonances (SWPT-MMR) is a specific implementation of SWPT. Similar to IEC 63028, SWPT-MMR is based on magnetic resonance. However, SWPT-MMR includes multiple magnetic resonances to generate a charging zone. In the charging zone, electric power is transferred to one or more receivers regardless of the position and direction of the receiver(s). Figure 2 shows a conceptual image of SWPT-MMR. As shown in Figure 2, an SWPT-MMR system generates a charging zone in a specific space with multiple magnetic resonances.