QC/T 1148-2021 English PDF (QCT1148-2021)

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QC/T 1148-2021: Power tailgate system for automobile
QC/T 1148-2021
QC
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.60
CCS T 26
Power tailgate system for automobile
ISSUED ON: MARCH 05, 2021
IMPLEMENTED ON: JULY 01, 2021
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 5
1 Scope ... 6
2 Normative references ... 6
3 Terms and definitions ... 6
4 Requirements ... 8
5 Test method ... 12
6 Inspection rules ... 17
7 Marking, packaging, transportation, storage ... 19
Power tailgate system for automobile
1 Scope
This document specifies the technical requirements, test methods, inspection
rules and markings, packaging, transportation, storage of the power tailgate
system for category M1 automobile.
This document is applicable to the electric opening and closing system of the
tailgate of the automobile, which is driven by electric spindle.
2 Normative references
The content of the following documents constitutes an indispensable clause of
this document through normative references in the text. Among them, for dated
reference documents, only the version corresponding to that date is applicable
to this document; for undated reference documents, the latest version (including
all amendments) is applicable to this document.
GB/T 4208-2017 Degrees of protection provided by enclosure (IP code)
GB/T 10125-2012 Corrosion tests in artificial atmospheres - Salt spray tests
GB/T 28046.1-2011 Road vehicles - Environmental conditions and testing
for electrical and electronic equipment - Part 1: General
GB/T 28046.2 Road vehicles - Environmental conditions and testing for
electrical and electronic equipment - Part 2: Electrical loads
GB/T 28046.4-2011 Road vehicles - Environmental conditions and testing
for electrical and electronic equipment - Part 4: Climatic loads
GB 34660 Road vehicles - Requirements and test methods of
electromagnetic compatibility
QC/T 413 Basic technical requirements for automotive electric equipment
3 Terms and definitions
The following terms and definitions apply to this document.
4.1.4 The electric opening and closing system of the tailgate shall have an alarm
prompt function.
4.1.5 The electric opening and closing system of the tailgate shall have the
functions of manual opening and closing, at the same time.
4.1.6 The electric opening and closing system of the tailgate shall have the
function of overheating protection.
4.1.7 The electric opening and closing system of the tailgate shall have the anti-
pinch function.
4.1.8 The running time of the tailgate's electric opening and closing system,
from the closed state to the maximum opening angle OR from the maximum
opening angle to the closed state, shall be between 3s and 10s.
4.1.9 The ambient temperature for the normal operation of the tailgate's electric
opening and closing system shall be -30°C ~ 80°C; the relative humidity shall
be 0 ~ 95%; the voltage shall be 9V ~ 16V.
4.1.10 The quiescent current of the ECU of the tailgate's electric opening and
closing system shall not be greater than 0.5mA. The working current of a single
electric spindle shall not be greater than 15A; the locked-rotor current shall not
be greater than 35A.
4.1.11 The electric opening and closing system of the tailgate shall have the
function of vehicle status recognition, to prevent the vehicle from mis-operation
under non-safety conditions.
4.1.12 The electric opening and closing system of the tailgate shall have the
opening memory function.
4.2 Performance requirements
4.2.1 Basic performance test
The test shall be carried out in accordance with the provisions of 5.2. The
electric opening and closing system of the tailgate shall meet the relevant
requirements of 4.1.
4.2.2 Durability
Carry out the test in accordance with the provisions of 5.3. The electric opening
and closing system of the tailgate shall function normally, without abnormal
noise; the rate of change of the anti-pinch force shall not exceed 30%.
4.2.3 Low temperature resistance
Carry out the test in accordance with the provisions of 5.4. The electric opening
and closing system of the tailgate shall function normally; the change rate of
opening and closing time shall not be greater than 30%; meanwhile it shall meet
the requirements of 4.1.8.
4.2.4 High temperature resistance
Carry out the test in accordance with the provisions of 5.5. The electric opening
and closing system of the tailgate shall function normally; the change rate of
opening and closing time shall not exceed 30%; meanwhile it shall meet the
requirements of 4.1.8.
4.2.5 Resistance to temperature cycle
Carry out the test in accordance with the provisions of 5.6. Perform the test, 2h
after restoring to room temperature. The electric opening and closing system of
the tailgate shall function normally. The change rate of the opening and closing
time shall not exceed 30%; meanwhile it shall meet the requirements of 4.1.8.
4.2.6 Vibration resistance
Carry out the test according to 5.7. The tailgate shall not be opened, during the
test. After the test, the electric opening and closing system of the tailgate shall
not be damaged and function normally.
4.2.7 Resistance to violent shutdown
Carry out the test in accordance with the provisions of 5.8. After the test, the
electric opening and closing system of the tailgate shall be free from damage
and function normally.
4.2.8 Snow load performance
Carry out the test in accordance with the provisions of 5.9. After the test, the
electric opening and closing system of the tailgate shall be capable of electric
opening and closing; the hover function shall be normal.
4.2.9 Noise performance
Carry out the test according to 5.10. During the test, the sound pressure level
of the tailgate's electric opening and closing system shall not be greater than
60dB (A); there shall be no abnormal noise. The momentary noise of the tailgate,
when its lock or buckle locks and unlocks, shall not exceed 80dB (A).
4.2.10 Overvoltage performance
Carry out the test according to the provisions of 5.11. After the test, the electric
opening and closing system of the tailgate shall be able to meet the
4.2.18 IP protection level of electric spindle
Carry out the test in accordance with the provisions of 5.19. The motor part of
the electric spindle shall reach the protection level of IP67; the water in the non-
motor part shall be discharged in time.
4.2.19 Static longitudinal load of ball socket
Carry out the test in accordance with the provisions of 5.20. The ball socket of
the electric spindle unit shall not break, when subjected to an axial tension of
3500N.
4.2.20 Static longitudinal load of electric spindle unit
Carry out the test in accordance with the provisions of 5.21. When the electric
spindle assembly bears 5000N axial tension, no parts shall come out.
4.2.21 Dynamic longitudinal load of electric spindle unit
Carry out the test in accordance with the provisions of 5.22. After the test, no
parts of the electric spindle unit shall come out.
4.2.22 Static lateral load of electric spindle unit
Carry out the test in accordance with the provisions of 5.23. After the test, the
electric spindle unit shall be able to work normally.
4.2.23 Drop resistance
Carry out the test in accordance with the provisions of 5.24. After the test, the
connection parts of the electric spindle unit shall neither break nor fall out.
5 Test method
5.1 Test conditions
Unless otherwise specified, all tests shall be carried out on flat ground, at 23°C
± 5°C and a relative humidity of 25% ~ 75%.
5.2 Basic performance
5.2.1 Appearance inspection: Visual inspection; the inspection result shall meet
the requirements of 4.1.2.
5.2.2 Anti-pinch force test: Use a dynamometer to carry out test, on the stand
of the tailgate's electric opening and closing system, that simulates the actual
vehicle conditions; record the test results.
stabilizes to room temperature for 2h, perform a functional test. The test results
shall meet the requirements of 4.2.4.
5.6 Resistance to temperature cycle
The test is carried out in accordance with the rapid temperature change test
method of the conversion time, in GB/T 28046.4-2011. The test result shall meet
the requirements of 4.2.5.
5.7 Vibration resistance
Carry out the test in accordance with the test method of QC/T 413. The test
result shall meet the requirements of 4.2.6.
5.8 Resistance to violent shutdown
On the bench of the tailgate's electric opening and closing system, that
simulates the actual vehicle situation, when the tailgate is at the maximum
opening angle, suddenly release a heavy object, which is hanged at the center
of gravity of the tailgate AND has the same weight of the tailgate, to allow the
tailgate to automatically move to the fully closed position of the tailgate. The
test result shall meet the requirements of 4.2.7.
5.9 Snow load performance
Place the tailgate's electric opening and closing system bench, that simulates
the actual vehicle condition, in an environmental test box at -30°±2°C. Let it
stand for 4 hours. Use a heavy object, which has a weight of not less than 3kg
AND is placed close to the center of gravity of the tailgate, to carry out the
electric opening and closing tests. The number of tests is 10 times. The test
results shall meet the requirements of 4.2.8.
5.10 Noise performance
Place the tailgate's electric opening and closing system bench, that simulates
the actual vehicle condition, in the semi-anechoic room. Make the tailgate's
electric opening and closing system work cyclically. Use the sound test and
evaluation equipment, to measure the noise, at a position 500mm at the middle
of the lateral side of the spindle, at a distance equal to the height of the spindle,
in the opening and closing process. The test results shall meet the requirements
of 4.2.9.
5.11 Overvoltage performance
Perform the test according to the test method of GB/T 28046.2. Heat the device
under test DUT to T = (Tmax - 20°C), in the heating box. Apply a voltage of 18V,
to the effective input terminal of the DUT, for 60min. The test result shall meet
the requirements of 4.2.10.
5.12 Insulation dielectric strength
Carry out the test according to the test method of QC/T 413. The test result
shall meet the requirements of 4.2.11.
5.13 Slope standing performance
Place the tailgate's electric opening and closing system bench, that simulates
the actual vehicle condition, under the 20% of slope condition; energize it to
carry out the test. Record the opening and closing time of the tailgate,
respectively. The test results shall meet the requirements of 4.2.12.
5.14 Hover function
Place the tailgate's electric opening and closing system bench, that simulates
the actual vehicle condition on a level ground and a 20% slope condition.
Manually operate the tailgate to stop at any angle, within the set maximum
opening range, to test whether it can hover. The test results shall meet the
requirements of 4.2.13.
5.15 Electromagnetic compatibility
Carry out the test according to the method specified in GB 34660. The test
result shall meet the requirements of 4.2.14.
5.16 Suction force performance
5.16.1 Self-suction door lock's suction force performance: Arrange a reaction
force mechanism of not less than 550N, on the tailgate's electric opening and
closing system bench, that simulates the actual vehicle condition. Close the
tailgate to the incompletely closed position AND perform automatic suction
action, of the self-suction door lock. The test results shall meet the requirements
of 4.2.15.
5.16.2 Self-suction lock buckle's suction force performance: Arrange a reaction
force mechanism of not less than 550N, on the tailgate's electric opening and
closing system bench, that simulates the actual vehicle condition. Close the
tailgate to the incompletely closed position AND perform automatic suction
action, of the self-suction door buckle. The test results shall meet the
requirements of 4.2.15.
5.17 Corrosion resistance of electric spindle unit
According to the neutral salt spray test method, which is specified in GB/T
10125-2012, the electric spindle unit shall be subjected to a 240h salt spray test.