An Intelligent power liftgate is a set of brand-new car modification intelligent system. The users are allowed to press the remote control car keys to manipulate the make-and-break key of the lift-gate and the switch inside the driver’s room. Moreover, it is also equipped with an intelligent anti-pinch system. Our lift-gate contains intelligence, convenience and humanity into one and will no doubtfully be a great helper to you.

1. Leilawin
Power Liftgate

2. CONTENTS
02
PRODUCT
INTRODUCTION
04
TEST METHOD
01
COMPANY
PROFILE
03
TECHNOLOGY

3. PART
01
COMPANY PROFILE
Company History/Company Strengths/Certificate

4. Shenzhen Leilawin Technology Co.,Ltd. focuses on auto
parts R&D and production. Its parent company is
Shenzhen Haina Precision Metal Plastics Co.,Ltd. who has
established for 10 years in precision auto electronic
industry. To open power liftgate market all-
dimensionally, set up a new brands “Leilawin”.
Since our founding in 2007, Haina specialized in
automobile related products. We become well-known
in automotive OEM supporting enterprise by
virtue of excellent technology, rich experience,
supreme quality and good after-sales service. Enjoy
high reputation in the industry.
Auto electric business units: Concentrate on designing
and manufacturing of power liftgate, hand free easy
open trunk system. Power liftgate takes the led in
controlling voice 55db. Major customers: ZOTYE
AUTO, DONGFENG AUTO, MAZDA VIETNAM, PAJERO
THAILAND, CHANA AUTO, BAIC MOTOR, TOYOTA
MOTOR, HYUNDAI ect.
COMPANY HISTORY

5. COMPANY HISTORY
2007
Haina established,
R&D center
specialized in
developing auto
product for years.
From 2007 to 2010
year, movement for
vehicle navigation
DVD was top-
selling in the
industry.
2010
Haina continued
to grow, annual
output value was
hitting 200
million!
2016
Haina determined
policy of developing
power liftgate,
started officially
entering the industry.
2017
Opened up
overseas market,
set out to
develolp hot
model inculded
CX-5 and H1 for
Malaysia, Isuzu
Mu-X, Leilawin
power liftgate
became a huge
hit overseas.
2018
Leilawin kept
occupying domestic
and aboard market,
always put power
liftgate quality at the
first consideration.
The improvement on
product research
and technology
never stops.
2010
2017
2007
2014
2018
2016
Leilawin became
key brand of
power liftrgate
for business
expansion.
Continued to
expand market
volume and
increased input
on R&D.
Leilawin was top
two within
domestic self-
owned brand.
2014
Haina Leila

6. COMPANY STRENGTHS
CUSTOMER SERVICE
Any feedbacks and after-sale
problems will be replied within
24 hrs and be regarded as
valuable assets for our
technology improvement. We
establish Technical Support
WhatsApp Group.
R&D CAPABILITIES
We have been trying to strike a
balance between power
liftgate pole and program
control for 3 years with Jiaying
University. Has great
technology advantages in the
industry.
INSTALLTION SUPPORT
Do-to-door installation teching
by our experienced installer as
an added value services.
MARKET PROTECTION
Do pre-installtion market or
cooperate with only 1
customer as our agent in the
same market.
1 2 3 4

7. 回 顾
COMPANY STRENGTHS
RECENT PROJECT REFERENCES:
China high-speed railway
Toyota
Hyundai
Mitsubishi
Peugeot
Cadillac
Renault
Benz
Isuzu
Geely and so on
PRODUCT DEVELOPMENT PROCESS:
Requirements Receiving & Market survey →
Gather hardware data (pole, bracket, wiring, button, lock,
plug) → Design software → Installation test
We develop new model in a short time.

8. • CE Cerficiate • FC Certificate • RoHS Certificate
CERTIFICATE

9. • RoHS Test Report • In House Test report • Auto Factory Compliance
TEST REPORT

10. PRODUCT INTRODUCTION
What's Power Liftgate/Market Size/Function/
Brushless Motor/Product Comparison
PART
02

11. WHAT IS POWER LIFTGATE
A power tailgate system is a device that aids the opening and
closing a car’s tailgate or boot lid automatically. The tailgate
can be opened and closed by pressing a button in the
dashboard, using a remote controller, or through gestures,
which are tracked by sensors placed beneath the rear bumper.
The system consists of mechatronic components that are
enclosed in a power assembly comprising electric latches,
component carriers, and closures for opening and closing of
the tailgate.

12. WHAT IS POWER LIFTGATE
No Basic functional requirements
1
Working voltage requirement: 9V-16V
Working temperature: -30 ° C -80 ° C
Storage temperature: -40 ° C -90 ° C
2 Work response time: <1S
3
Static current ≤0.6mA
Running current: 2-3A
4
Electric push rod: maximum ≤ 34mm
Working stroke: 200mm
maximum output force value > 1000N
Retracting length: 400mm
Full extension length: 600mm
5
Electric vacuum door lock : working current 1-3A,
exercise time 1-2S
6
The remote control function acquires signals
through the central control network
7
Anti-pinch force is less than 100N, subject to final
review

13. MARKET SIZE
2210 million US$ in 2024
The worldwide market for Automotive Power Liftgate is expected to
grow at a CAGR of roughly 13.7% over the next five years, will reach
2210 million US$ in 2024, from 1020 million US$ in 2019, according
to a new Research study.

14. Remote
control
Button switch Cab switch Foot sensor
switch
Intelligent
anti-pinch
FUNCTION

15. Height
adjustment
Stop at any
height
Alarm function Damage-free
installation
Low noise
FUNCTION

16. The industry's exclusive pioneer-
brushless motor power liftgate
BRUSHLESS
MOTOR
The revolutionary replacement scheme brings the great technology
of the motor industry into the power liftgate.
Replace the traditional brush motor with a brushless motor to make
an electric pole. The service life is four times longer than brush
motor. When torque is constant, speed and noise of brushless
motor is 43% lower than brush motor.
With Leilawin's customized powerful intelligent tailgate system, the
product quality standard of the power liftgate industry is truly
upgraded to a new height.

17. Brushless motor
The brushless motor is
composed of stator winding,
rotor core and built-in hall
plate. Hall plate is installed
inside the motor. Rotor core
is assembled with the ball
bearing and the case. The
overall structure design is
simple and reasonable.
BRUSHLESS & BRUSH MOTOR
Brush motor
The brush motor is composed
of magnetic tile, rotor coil
and external hall plate. Hall
plate is installed outside the
motor, rotor coil is assembled
with oil bearing and case.
The rotating shaft is close
contact with carbon brush.

18. 1. Large friction, large vibration, high loss, loud noise.
Need to use carbon brush to connect power supply. The carbon brush
continuously rubs against rotating shaft which will cause continuous
loss. After times rotations, motor will not be energized. During
switching is working of a large current and generate a carbon deposit
of commutator. So that motor is short-circuited and pole cannot work.
Brush motor commonly uses oil-containing bearings which is low
noise at begins due to grease lubrication. However noise is rapidly
exposed as grease increasingly drained. Serious noise pollution
happens after a short time using.
2.Heating, low efficiency, small output power, short life.
Due to structure, connect resistance between brush and commutator
is large. That causes large motor resistance and heat. Also cause small
output power and low efficiency. The permanent magnet is a thermal
element. If temperature too high, magnetic steel will demagnetize &
motor performance be degraded. Then tailgate cannot be switched.
Service life of brush motor is within 1000 hours. Brush motor is hard
to adjust due to 2 hall only. Speed of two pole is different when
control the switch. Long time use may cause deformation.
3.Low sensitivity
The detection method of external single hall cannot accurately assist
the control system to command the motor speed flexibly and
precisely. And the hall plate of brush motor has to be exposed to the
air. That will cause the reaction sensitivity of the control system
gradually decrease with time and environment.
1.Exclusive product with simple design and high safety
Brushless controller is jointly developed by Leilawin and Jiaying
University. Has domestic unique intellectual property rights and
invention patents. Its structure has no brush, work doesn’t produce
sparks to cause interference to ECU/in-vehicle equipment. All
structure is simple, easy sealing to achieve waterproof and
dustproof with high safety.
2.Low vibration, no noise, long life, high efficiency, small current
Leilawin uses NSK ball bearings imported from Japan. It converts
the surface into point friction to kill the noise. Also ensure noise
reduction effect not be degraded along with motor life for long
time use. Rotating noise of motor stays stable. Due to compact
assembly structure, there's no carbon brush wear. Rotating life
reaches more than 100,000 times which is more than 10 times of
brush motor. As long as ball bearing is not broken, the brushless
motor will keeps work steadily.
High efficiency, large torque. Standby power consumption is only
0.04mA due to small operating current and low heat. It has great
protection to original-car battery and will not cause lose electricity.
3.High sensitivity
Use digital frequency control with strong controllability. Easy to
make synchronous balance of two poles and have no any impact
on tailgate. Double pole 6-hall detection can control motor
revolutions precisely. Make pole hovering and anti-pinch functions
achieve sentitively. Also protect hall circuit board to avoid air
Brush
Brushless
BRUSHLESS & BRUSH MOTOR

19. Brush motor appearance VS Brushless motor appearance
2-hall brush motor
Hall control panel is
exposed to the air,
easily oxidized and
damaged by the
environment.
6-hall brushless motor
Fully sealed in one package is moisture proof and dust proof.
Control the speed and position more precisely.
BRUSHLESS & BRUSH MOTOR
VS

20. BRUSHLESS & BRUSH MOTOR
Brushless motor used for high requirement field:
· Drone
· Dyson hair dryers
· ELectric motorcycles
· Preinstallation new energy electric plants (lift window,
air conditioner compressors, electric motors) and so on.
Brush motor used for low requirement field:
· Electric toys
· Tape recorders
· Old-fashioned disc players
· Household application ect

21. Leilawin VS Others electric pole fitting
Made of aluminum alloy. Hard
oxidizing and electroplating are not
easy to wear and rust. Fitting joints
are embedded waterproof parts
which has good sealing
performance. The waterproof grade
IP66 or above, two fittings
connection is more tight.
PRODUCT COMPARISION
Leilawin's
The iron fittings by electrophoresis in the
market will be rusted within half a year and
be easy to wear. Waterproof is useless and
the sealing is bad. Fitting connection is not
strong. Will be easily deformed after a long
time use.
Leilawin Others

22. Leilawin VS Others spring
Made of imported spring steel from Germany. It flocked and has
benefits:
1. Spring flocking can greatly reduce the friction between spring
and inner fitting. Thus prolong the rust-proof life of the plating
layer, up to 10 times compared to the spring without flocking.
2. Can reduce the noise produced by the spring during work.
3. It avoids the rust of the plating layer and reducing the
attenuation of the spring.
PRODUCT COMPARISION
It is not flocked. After a long time
friction between spring and fitting, the
plate will be scraped and the spring
will be rusted.
Leilawin Others
VS
Leilawin's Others

23. Leilawin VS Others wiring harness
Vehicle regulation level 16AWG-
2.4mm wire diameter power line
with a power rating up to 2200
watts and above. It ensures power
liftgate stable and works normally
for long time.
PRODUCT COMPARISION
General level 26AWG-1.3mm wire diameter
power line with a power rating only up to 242
watts.
Leilawin Others
Leilawin's Others
VS

24. Leilawin VS Others round wire nose & body waterproof parts
The copper tinned grounds wire nose. That prevents copper
from being exposed to air which improves the oxidation
resistance and corrosion resistance. The front and back ends are
riveted, the pulling force is more stable and firm.
Unique turning design + bottom reinforcement makes pole wire
harness closer to the body. The upper wire harness will not be
tilted up to cause inconvenience for tailgate closing. The sense of
beauty is more in line with aesthetic aesthetic standards.
PRODUCT COMPARISION
The bare copper grouds wire nose. That
directly exposes to the air which affects the
conductive
performance and loses the grounding effect.
The single-head riveting pressure is easy to
loosen off for a long time.
Ordinary waterproof parts, the design is simple
and inefficienct to use.
Leilawin
Others
VS
Leilawin's Others
Leilawin'sOthers
Others

25. Leilawin VS Others Wire harness connector
The full wire hardness is plug-in and
free from broken wire to avoid
damage to the original car wire .The
stability of the tailgate circuit
system is ensured.
PRODUCT COMPARISION
Directly break the wiring will result in no
protection of the terminal. Long-term
exposure to the air will cause poor
connection between oxidation and rust.
Make the tailgate system not work properly.
Leilawin Others
VS
Leilawin's Others

26. PART
03
PRODUCT INTRODUCTION
Working Description/Pushrod Parameter/Installation/
Product Show

27. Working Description
Unlock tailgate
lock
Detect the unlocking
signal is qualified or notFault report
Error
Correct
Execute gate-opening action
instruction
Action in place or not
Appear anti-pinch
signal or not
Notappear
Notinplace
Stop gate-opening
action
Finish gate-opening
action
In place
Appear
Open the gate Close the gate
Open or close
judgment
Correct
Error
Control instruction
or signal verification
Standby waiting
instruction or control
signal
Self-examine
and status
report
System is powered
up
Execute gate-closing
action instruction
Notin
place
Notappear
Action in place
or not
Appear anti-pinch
signal or not
Drive tailgate lock
suction
Stop gate-closing
action, electric
drive pole to
opening position
Fault report
Detect the unlocking
signal is qualified or
not
Finish gate-closing
action
Correct
Error
Inplace
Appear
WORKING DESCRIPTION

28. WORKING DESCRIPTION

29. Gate-opening process
ECU will firstly unlocks the tailgate lock by electronic control. When the unlocking signal appears and confirms, electric drive
pole will execute gate-opening action. During its execution, collect position and anti-pinch module signal. The electric drive
pole action immediately stops when appears anti-pinch signal. The system enters standby state again. The gate-opening
finishes when action in place, the system enters into standby state.
WORKING DESCRIPTION
Gate-opening process
ECU will firstly unlocks the tailgate lock by
electronic control. When the unlocking
signal appears and confirms, electric drive
pole will execute gate-opening action.
During its execution, collect position and
anti-pinch module signal. The electric drive
pole action immediately stops when
appears anti-pinch signal. The system
enters standby state again. The gate-
opening finishes when action in place, the
system enters into standby state.
Gate-closing process
Electric drive pole executes gate-closing action and
continuously collect position and anti-pinch signal
during execution process. It immediately stops the
pole action when appears anti-pinch signal. And
drive electric pole back to the opening position.
The system enters into standby state. After position
signal completing, detect tailgate lock signal and
drive it to self-prime motor to interlock action. Lock
the back door firmly and detect the locking signal
in place or not. Under signal-qualified conditions,
stop self-locking action and finish closing action of
back door.

30. PUSHROD PARAMETER

31. Force value calculation principle:
When the back door stops at any position, the
electric pole motor does not work.
At this time, the electric pole torque and the
back door torque should meet the formula:
2*pole torque = gravity torque
If calculate the pole force value, need to know
the following conditions:
Center coordinate of hinge rotation;
Barycentric coordinate;
Back door weight;
Pole body mounting point;
Back door of pole mounting point;
The max opening angle of back door.
PUSHROD PARAMETER

32. Installation of main line diagram
Main harness routing direction
Kicking line routing direction
Self-prime locking piece position
INSTALLATION

33. PRODUCT SHOW

34. PRODUCT SHOW

35. TEST METHOD
Testing Items/Testing Datas PART
04

36. TEST ITEMS
Test items for judging whether the power liftgate
are qualified:
• General requirements such as no defects, no bubbles, no
color difference;
• Operating force;
• Endurance experiments;
• Low temperature storage experiments;
• High temperature storage experiments;
• Resistance to temperature variability experiments;
• Shock resistance test;
• Torsional rigidity test;
• Sinking rigidity test;
• Noise experiment;
• Abnormal noise determination;
• Opening and closing time;
• Slope performance;
• Anti-pinch performance;
• Hover function requirements;
• Electromagnetic compatibility;
点击此处添加标题
点击此处添加标题
标题数字等都可以通过点击和重新输入进行更改，顶
部“开始”面板中可以对字体、字号、颜色、行距等
进行修改。建议正文12号字，1.3倍字间距。标题数字
等都可以通过点击和重新输入进行更改，顶部“开始”
面板中可以对字体、字号、颜色、行距等进行修改。
建议正文12号字，1.3倍字间距。

37. Install the actuator of electric tailgate on the fatigue test bench. Have a test with frequency
of 4-6times/min according to the following working condition and times. Each connection
should have no phenomenon of breakage or come off after testing. The attenuation of
support force value is less than 10%.
Working condition 1 2 3
Temperature 20 ℃ -30℃ 80℃
ECU end voltage 12V 12V 12V
Times 32000 4000 4000
Install the actuator of electric tailgate based on real vehicle on the platform. Have a test
according to the following working condition. After testing, the actuator should have no
phenomenon of crack, abnormal noise. And no interstice on connecting rod. The
attenuation of support force value is less than 10%.
Working condition 1 2 3
Temperature 20℃ 20℃ 20℃
Input Frequency 33Hz×50m/s2，amplitude
0.4mm
Orientation Up and down Left and right Forwards or
backwards
Endurance Quality
TEST DATAS

38. Endurance quality
After 2000 times manual opening and closing on tailgate, run a test according to
the following conditions. And the electric tailgate system is functioning normally.
Working
condition
1 2 3 4 5 6 7 8 9
Gradient Level Headstock
upwards
Incline of
20%
Headstock
downwards
Incline of
20%
Level Headstock
upwards
Incline of
20%
Headstock
downwards
Incline of
20%
Level Headstock
upwards
Incline of
20%
Headstock
downwards
Incline of
20%
Temperature 20℃ 20℃ 20℃ -30℃ -30℃ -30℃ 80℃ 80℃ 80℃
ECU end
voltage
12V 12V 12V 12V 12V 12V 12V 12V 12V
Times 9600 3200 1200 1200 400 400 1200 400 400
TEST DATAS

39. THANK YOU！
www.leilawin.com
+86-133 1292 0130 (Katie Hwang)
https://www.facebook.com/electrictailgate
https://www.linkedin.com/in/powerliftgate/
https://www.youtube.com/channel/UCckU4PIjjBah42EjtL9ENdw?view_as=subscriber