3. Index
Existed Technique
Introduction
Working
Qi
Wireless charger
Advantages
Disadvantages
Conclusion
4. Existed Technique
Limited distance wire.
Portable charger.
Fig 1. Mobile charger
Fig 2. Portable mobile charger
5. INTRODUCTION
Smartphone are changing the way we live our lives,
both online and off. With each new model, we are
used to getting more processor speed, new features
and programs, and entire new ways of using them.
Despite increased capabilities, battery life simply
hasn’t kept up.
Imagine sitting down for a cup of coffee, and placing
your phone on the table. The phone lights up, and
starts to automatically charge – without connectors or
cables.
6. How does wireless charging work?
Also known as inductive charging, is a convenient and
fuss-free way to power up smartphone.
Wireless chargers emit an alternating current via a
transmitter coil, which then induces a voltage in the
receiver coil found in the device.
Qi wireless charging pads are capable of charging
Smartphone, tablets, Bluetooth headsets, cameras and
portable power packs.
7.
8. How do you know if your
smartphone is Qi compatible?
If you have a wireless charger from Verizon, your
smartphone must be Qi compatible; all wireless
charging accessories sold by Verizon are Qi certified.
So how do you know if your phone is Qi compatible?
Your device should have a Qi logo on it somewhere, so
be sure to check the packaging, the case and the
manual.
9. Qi(inductive power standard)
•Qi (pronounced "Chee") is
an interface
standard developed by the
Wireless Power Consortium
for inductive electrical power
transfer over distances of up
to 4 cm (1.6 inches).
10. Nokia launched two Smartphone (the Lumia
820 and Lumia 920) on 5 September 2012, which
feature Qi inductive charging.
Now you can boost your Nokia Lumia’s battery without
plugging it in. Nokia Lumia 920 has wireless charging
built-in. And you can charge Nokia Lumia
820 wirelessly by adding on a wireless charging shell .
13. Wireless charging stand comes with NFC technology.
Need to use your phone while it charges?
No problem. Just tap via NFC to launch your chosen
app, place phone on the stand and you are in business.
14. Advantages
Protected connections - no corrosion when the
electronics are all enclosed, away from water or oxygen
in the atmosphere.
Use of separate chargers is eliminated.
The need of different types of chargers by different
manufacturers is totally eliminated.
Durability - Without the need to constantly plug and
unplug the device, there is significantly less wear and
tear on the socket of the device and the attaching
cable.
15. Disadvantages
Lower efficiency, waste heat - The main disadvantages
of inductive charging are its lower efficiency and
increased resistive heating in comparison to direct
contact.
Slower charging - due to the lower efficiency, devices
can take longer to charge when supplied power is
equal.
More costly - Inductive charging also requires drive
electronics and coils in both device and charger,
increasing the complexity and cost of manufacturing.
16. Inconvenience - When a mobile device is connected to
a cable, it can be freely moved around and operated
while charging. In current implementations of
inductive charging , the mobile device must be left on
a pad, and thus can't be moved around or easily
operated while charging.
17. Conclusion
Use the device application it can wirelessly charge up
the batteries which can save power, time and money in
a long run for the general public.
