jjPlus 200W E-scooter wireless charging solution introduction

1. jjPlus
Introduction
December 2020
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2. 2
 Founded in 2004
 Major investors are Hermes and Foxconn
 Leading magnetic resonant wireless power
solution provider in the world
 Currently focus on E-mobility and Robot
wireless charging solution, up to 500W
 Partnering with world tier-1 EMS companies,
with strong supply chain support
jjPlus Introduction

3. jjPlus key technologies
(1) 0W~60W, Low/Mid power 6.78MHz magnetic resonant wireless power technology
(2) 50W~400W, Mid/High power 125KHz magnetic resonant wireless power technology
ASIC solution for <2.5W wearable
wireless charging application
3D antenna and ASIC solution for 5W~20W
mobile phone wireless charging application
Discrete solution for 60W long distance
(>20cm) wireless power application
Small coil (Qi coil size) to achieve
~100W wireless power transfer at
1cm distance with 85% efficiency
Normal coil (10cm x 10cm) to achieve
up to 400W wireless power transfer at
2cm~4cm distance with 85% efficiency
Large coil (>30cm x 30cm) to achieve
up to 400W wireless power transfer at
>20cm distance with 85% efficiency

4. Wireless-Charged
E-scooter
One-Stop solution

5. More and more people choose to
use E-scooter for commuting

6. What most users
care about most?
How to get power
more conveniently

7. The current wired charging method of E-scooter is not convenient
for end-users!

8. More Suitable Charging Method - Wireless Charging
Build-in wireless charging function, only need small space
TX Module
RX Module
The Charging Experience Will Be Very Different
TX
RX

9. SLOW
Park: Squat down > open the waterproof cover > align > Plug in > Charge
Pick: Squat down > Plug out > Close the waterproof cover > Organize the charging
cable > Use
FAST
Park and charge pick and use
Easy To Use

10. Advantages Of Wireless Charging
Easy Safety DurableOrderly
What would it be like to park 20 E-Scooters in a public space?
Users can place them neatly, at the same time, these E-Scooters are also charging wirelessly.
Neatly arranged in chargingMessy and unable to replenish power
Good for management
Current method Wireless Charging

11. No Contact No Electric ShockRemoved the charging cable and connector, will get higher weather resistance and waterproof performance, more conducive to outdoor use.

12. Renewable Energy Applications

13. One-stop solution for wireless charged E-scooter
• Two E-scooters with 80W
wireless charging capability
per E-box, which is a 10-feet
container.
• E-scooter number can be
scalable by adding containers.
• Suitable for amusement park,
resort hotel, metro station,
factory last mile transportation
The E-box
Solar-power roof

14. jjPlus 84W
Wireless
Charging module
for E-scooter

15. 84W Wireless Charging | Electrical Specification
Item RX TX
Power Specification
Output Power: 42VDC / 2A (maximum)
CC mode: 2A； CV mode: 42V
Input Power: 48VDC / 2.7A
Efficiency 85% @ Z = 20 ~ 40mm (The distance from coil to coil should not be less than 15mm)
XY freedom XY ±10mm @ Z=30mm
Signaling protocol Proprietary BLE
Working Frequency 125kHz
Coil Type Litz Wire
Protection FOD、OTP、OPP、Auto-disconnect (while Z height is lower than 1.5cm)
EMC Standard FCC Part15 Class-B / EN55032 Class-B
ESD
Air discharge +/-8KV
Contact discharge +/-4KV
Operating Ambient Temperature -20℃~ +50℃
Storage Temperature -40o
C~70o
C
Inter coil separation Least 30cm away to each other

16. jjPlus Wireless Power Architecture
Battery
125KHz

17. Why we choose 125KHz for high power application?
• Same as Qi frequency band => 100KHz~148.5KHz
• Higher efficiency thanks to better magnetic material and electronic components
• According to Ishida Kazuhito-san, who was the Technical Standard Director of
Qualcomm Japan
MIC (日本總務省) will undertake a new rulemaking for magnetic coupling
technology using 100k-148.5kHz band at most 100 W later this year, targeting
completion at the end of 2020. Currently we have no regulation specified for WPT
in this band.
• jjPlus uses the resonant technique developed in EV wireless charging in the
125KHz wireless power module design, so we can achieve better XYZ freedom
than Qi method with higher efficiency

18. jjPlus 84W Wireless Charging | Module dimension

19. jjPlus 84W Wireless Charging | End to end efficiency @ Z gap=30mm
Vout=42V
Iout=2A
Efficiency=85.51%
Iout=4A
Efficiency=86.36%

20. jjPlus 84W Wireless Charging | End to end efficiency @ Z gap=30mm
At least +/-10mm XY spatial freedom is achieved

21. jjPlus 84W Wireless Charging | Charging time of Xiaomi E-scooter Pro
10.6cm x 10.6cm x 0.4cm 8cm x 8cm x 2cm
CMT(R) 050A-LED

22. CONTACT INFO:
WEB: www.jjplus.com
TEL：+886-2-2248-5700
FAX : +886-2-2248-5977
15F.-7, No. 2, Jian 8th Rd., Zhonghe Dist., New Taipei City
235, Taiwan (R.O.C.)
235新北市中和區建八路2號15樓之7
E-mail：info@jjplus.com
LinkedIn: www.linkedin.com/company/13649008/
Facebook: www.facebook.com/jjpluswireless/
Contact us on-line: www.jjplus.com/#contact
About JJPlus Corp.
Established in 2004, JJPlus is a forerunner design manufacturer from Taiwan in wireless communication and wireless power
technologies. With deep domain knowledge and engineering expertise, JJPlus has always been developing and designing
collaboratively with fundamental technology partners to offer OEMs and ODMs the latest and the best by integrating JJPlus
wireless solutions, gracefully, into their solutions.
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