Wireless Power Transfer
Ing. Nicolò Antonante
Field Application Engineer
Würth Elektronik Italy
Andrea.degruttola@we-online.com
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
www.we-online.com
Agenda
Standards
Coils basics and technologies
Wireless Power Consortium & Qi Standard
WE Products and advantages
WPCC Demo
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
2
www.we-online.com
Standards
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
3
www.we-online.com
War of Standards
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
4
www.we-online.com
How does Wireless Power Charging work?
Power transfers via inductive coupling at short
distances (mm range)
Transmitter (Tx) and Receiver (Rx) Coils are
inductively coupled coils
Magnetic field concentrated in small volume
between Tx / Rx
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
5
www.we-online.com
Industry Accepted Standardization: Qi Standard
Standardization increases consumer confidence and
demand
Qi “气” (Chee: “Vital Energy” in Asian Philosophy - An
Intangible Flow of Power)
Industry standard developed by Wireless Power
Consortium (WPC)
Rapid industry-wide adoption
(200+ Members)
More than 500 approved products in the market
Würth Electronics is an official member of the WPC
http://www.wirelesspowerconsortium.com/memberlist/
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
6
www.we-online.com
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
7
www.we-online.com
Alliance for Wireless Power (A4WP) –
Flexible coupling technology at 6.78MHz
Würth Elektronik is member of A4WP as well
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
8
www.we-online.com
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
9
www.we-online.com
Comparison Standards 4/2014
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
10
www.we-online.com
Applications
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
11
www.we-online.com
Application - Accessories
Multiple Charging Pads
Chargers
Phone/Tablet Sleeves
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
12
www.we-online.com
Application - Furniture
Wireless Power in every desk
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
13
www.we-online.com
Application - Automotive
Use time in car for convenient charging
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
14
www.we-online.com
Application – Medical Devices
Easy to clean & sanitize
Hermetic sealing
No contact degradation due to aggressive solvents
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
15
www.we-online.com
Coils basics and technologies
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
16
www.we-online.com
How does Wireless Power Charging work?
Power transfers via inductive coupling at short
distances (mm range)
Transmitter (Tx) and Receiver (Rx) Coils are
inductively coupled coils:
AC current in Tx coil generates a magnetic
field, which induces a voltage in Rx coil. Rx
voltage may be used to power a mobile
device or charge a battery
Magnetic field concentrated in small volume
between Tx / Rx
Improve coupling effect between coils by:
matching coil size
flat surface between coil to keep distance
small
shielding and aligning of coils
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
17
www.we-online.com
Magnetic coupling
Transmission depends on the position of the
coils
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
18
www.we-online.com
Coupling factor / alignment tolerances
In general, for any coil type the magnetic coupling
factor K can be improved by reducing the;
1.
2.
Vertical distance and
Coil misalignment
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
19
www.we-online.com
Coil without Shield with battery
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
20
www.we-online.com
Coil with shield and battery
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
21
www.we-online.com
Improvement using ferromagnetic shielding
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
22
www.we-online.com
Quality factor – definition
Wurth part 760308100111
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
23
www.we-online.com
Skin effect
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
24
www.we-online.com
WE-FSFS Flexible Sintered Ferrite Sheet
Technical Information
•
•
•
•
•
Flexible ferrite sheet with adhesive tape
High permeability
Low losses at communication frequency
Easy to apply adhesive mounting tape
Operating temperature
•
•
•
•
•
-40°C ~ +85°C
Improve efficiency of Wireless Power Transfer
Improve performance of NFC and RFID
communication systems
EMI Suppression
Magnetic Shielding
Custom designs on request
Length, stampings,…
Attention: Technical drawing is needed!!
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
25
25
www.we-online.com
WE-FSFS Flexible Sintered Ferrite Sheet
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
26
26
www.we-online.com
WE-FSFS vs WE-FAS
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
27
27
www.we-online.com
Wireless Power Consortium
Qi Standard
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
28
www.we-online.com
The Power of Qi
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
29
www.we-online.com
QI Standard System Overview
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
30
www.we-online.com
WIRELESS POWER
CONSORTIUM
Communication (Modulation)
Transmitter
Receiver
Cp
+
-
Lp
Cs
Ip Vp
Load
Ls
Cd
Modulation
Cm
Modulation
C
Rm
Power
How it works
31
Foreign object detection (FOD) (1)
Qi-standard V1.1
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
32
www.we-online.com
Foreign object detection (FOD) (2)
Qi-standard V1.1
The difference between transmitted and received power indicates power loss
If the difference indicates an unexpected power loss, the power transmitter
terminates the power transfer
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
33
www.we-online.com
WE Products and advantages
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
34
www.we-online.com
Wireless Power Coils WE-WPCC
- Tx/Rx coils
Fully compliant to WPC Qi standard
Efficiency up to 85%
Supreme shielding characteristics for low leakage
inductance
Outstanding performance due to usage of litz wire:
lowest RDC
highest Q values
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
35
www.we-online.com
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
36
www.we-online.com
WE Wireless Power Coils –
Product Program - Transmitters
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
37
www.we-online.com
WE Wireless Power Coils –
Product Program - Receivers
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
38
www.we-online.com
WE-WPCC Products
760 308 101
760 308 105
760 308 110
760 308 111
760 308 100 111 760 308 201 760 308 103 202
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
760 308 106
39
www.we-online.com
Structure of thin receiver coils
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
40
www.we-online.com
WE-WPCC
NEW round pot core transmitter A10, A11
760 308 100 110
760 308 100 111
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
41
www.we-online.com
WE Wireless Power Coils
New Receiver design:
Smaller receivers on thin flexible ferrite
Round small receivers on thin flexible ferrite
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
42
www.we-online.com
WPCC Demo Kit
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
43
www.we-online.com
Thank you
NiAn | Public | Fortronic Bologna 2014
© All rights reserved by Würth Elektronik, also in the event of industrial property rights. All rights of disposal such as copying and redistribution rights with us.
44
www.we-online.com

TRENCHSTOP™ 5 IGBTs in Welding Machines