Wi-Charge Wireless power integration guidelines: Sept 2018

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The Webinar, titled “Integrating wireless charging” will focus on how to integrate Wi-Charge wireless energy modules into products. It featured Ori Mor, Vice President Research and Development and Yuval Boger, Chief Marketing Officer, both from Wi-Charge. The agenda included: - Identifying the best candidates for integration. - Hardware and optical considerations. - Description of sample integration with a smart door lock with a Wi-Charge receiver. - Q&A Full transcript and audio at http://www.wi-charge.com/sep-2018-webinar-on-integrating-wireless-charging/

Technology

Wireless Power Integration Guidelines
Sept 5th ,2018, 12:30 PM EST
Yuval Boger, CMO Ori Mor, VP R&D

Agenda
Wi-Charge / Integration Guidelines 2
The best candidates for integrating wireless power
Hardware requirements
Design considerations
Case study: integrating wireless power in a smart door lock
Q&A

Best Product Candidates
for integrating wireless power

Everyone
wants wireless
power…
• Can Wi-Charge power anything?
• Unfortunately not:
• We can’t power electric cars (requires very
high power and ecosystem)
• We can’t power the router in the other
room (no line of sight)
• Let’s see what type of products are good
candidates to enjoy the freedom from wires.

Best
Candidates for
Wireless
Power
• Average power requirements
from 10 mW to 3 – 5 Watts
• Line of sight often exists between power
transmitter and power receiver
• Sufficient ROI
It is even easier if:
• The device is already battery operated
• The device is already powered by USB

Integration is
even easier if:
• The Device is already battery operated
• This means it is already optimized for low
power consumption
• Devices that are wired are usually not
optimized (developers say: who cares how
much it consumes?)
• The device is already USB powered
• Our standard OTS receiver has a USB
interface so integration usually takes
seconds

Line of Sight
• We use directional light to deliver power.
• Light is 100 times more efficient than RF
because it is directional
• Light can deliver orders of magnitude more
energy than RF
• Light is safe: no stray power in the room
• But light has its drawbacks
• Light travels in straight lines
• Light can’t efficiently penetrate opaque
objects
• Line of sight between energy transmitter and
receiver is required some (but not all) of the
time

Average
Power
• AVERAGE power should be in the range of
10mW to 3W
• Can work with very lower power (below 10mW)
but batteries may be a good-enough solution.
• Above 3W average power – not our focus right
now
• This is AVERAGE power and not PEAK power

Example: the
difference
between AVG
and PEAK
power
• Example: A pair of rear speakers for home theatre
• Each speaker needs 4W (total of 4W x 2 = 8W)
• What is the average power? Depends on how much
they are used…
• 2 hours/day: Avg power is: 8Wx2hrs/24hrs = 0.66W
• 4 hours/day: Avg power is: 8Wx4hrs/24hrs = 1.33W
• 9 hours/day: Avg power is: 8Wx9hrs/24hrs = 3W

Electrical Integration is simple
Client device type Receiver output Device input Comments
Battery operated
device with internal
rechargeable battery
Usually 5V (can
also be
configured for
3.7V)
Usually 5V.
Can be higher
voltage as well.
Integration usually
takes few minutes
Other devices Usually 3V – 12V
Often includes
internal
rechargeable
battery
Usually 3V –
12V
Wi-Charge receiver
output voltage is
determined by
client device
Wi-Charge / Integration Guidelines 13

Optical
Integration
• Current wireless power receiver is
roughly 50 mm x 15 mm x 6 mm
• Need to mount receiver so that it is in
the general direction of the transmitter.
Optics
Electronics

Smart Door Lock
w/ face recognition and fingerprint ID
The problem:
• Smart devices are power hungry
devices.
• Batteries need to be changed
frequently.
• New features limited by power
budget.
Wi-Charge / Integration Guidelines 16

The Integration
Wi-Charge / Integration Guidelines 17
(1) Receiver placed on top
(2) Output connected to
rechargeable battery input
(3) That’s it… 

Results
Wi-Charge / Integration Guidelines 18

Questions?
Please use the chat window to submit questions
Wi-Charge 19
See demos at www.will-it-charge.com For additional information:
Visit www.wi-charge.com
Follow us @WiChargeLTD
Contact us to apply for partnership

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Wi-Charge Wireless power integration guidelines: Sept 2018

1. Wireless Power Integration Guidelines Sept 5th ,2018, 12:30 PM EST Yuval Boger, CMO Ori Mor, VP R&D

2. Agenda Wi-Charge / Integration Guidelines 2 The best candidates for integrating wireless power Hardware requirements Design considerations Case study: integrating wireless power in a smart door lock Q&A

3. Best Product Candidates for integrating wireless power

4. Everyone wants wireless power… • Can Wi-Charge power anything? • Unfortunately not: • We can’t power electric cars (requires very high power and ecosystem) • We can’t power the router in the other room (no line of sight) • Let’s see what type of products are good candidates to enjoy the freedom from wires.

5. Best Candidates for Wireless Power • Average power requirements from 10 mW to 3 – 5 Watts • Line of sight often exists between power transmitter and power receiver • Sufficient ROI It is even easier if: • The device is already battery operated • The device is already powered by USB

6. Integration is even easier if: • The Device is already battery operated • This means it is already optimized for low power consumption • Devices that are wired are usually not optimized (developers say: who cares how much it consumes?) • The device is already USB powered • Our standard OTS receiver has a USB interface so integration usually takes seconds

7. Line of Sight • We use directional light to deliver power. • Light is 100 times more efficient than RF because it is directional • Light can deliver orders of magnitude more energy than RF • Light is safe: no stray power in the room • But light has its drawbacks • Light travels in straight lines • Light can’t efficiently penetrate opaque objects • Line of sight between energy transmitter and receiver is required some (but not all) of the time

8. Wi-Charge / Integration Guidelines 8

9. Average Power • AVERAGE power should be in the range of 10mW to 3W • Can work with very lower power (below 10mW) but batteries may be a good-enough solution. • Above 3W average power – not our focus right now • This is AVERAGE power and not PEAK power

10. Wi-Charge / Integration Guidelines 10

11. Example: the difference between AVG and PEAK power • Example: A pair of rear speakers for home theatre • Each speaker needs 4W (total of 4W x 2 = 8W) • What is the average power? Depends on how much they are used… • 2 hours/day: Avg power is: 8Wx2hrs/24hrs = 0.66W • 4 hours/day: Avg power is: 8Wx4hrs/24hrs = 1.33W • 9 hours/day: Avg power is: 8Wx9hrs/24hrs = 3W

12. Hardware Requirements

13. Electrical Integration is simple Client device type Receiver output Device input Comments Battery operated device with internal rechargeable battery Usually 5V (can also be configured for 3.7V) Usually 5V. Can be higher voltage as well. Integration usually takes few minutes Other devices Usually 3V – 12V Often includes internal rechargeable battery Usually 3V – 12V Wi-Charge receiver output voltage is determined by client device Wi-Charge / Integration Guidelines 13

14. Optical Integration • Current wireless power receiver is roughly 50 mm x 15 mm x 6 mm • Need to mount receiver so that it is in the general direction of the transmitter. Optics Electronics

15. Case Study: Smart Door Lock

16. Smart Door Lock w/ face recognition and fingerprint ID The problem: • Smart devices are power hungry devices. • Batteries need to be changed frequently. • New features limited by power budget. Wi-Charge / Integration Guidelines 16

17. The Integration Wi-Charge / Integration Guidelines 17 (1) Receiver placed on top (2) Output connected to rechargeable battery input (3) That’s it… 

18. Results Wi-Charge / Integration Guidelines 18

19. Questions? Please use the chat window to submit questions Wi-Charge 19 See demos at www.will-it-charge.com For additional information: Visit www.wi-charge.com Follow us @WiChargeLTD Contact us to apply for partnership

Wi-Charge Wireless power integration guidelines: Sept 2018

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