GB/T 18488-2024 (GB/T18488-2024, GBT 18488-2024, GBT18488-2024) & related versions
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Drive motor system for electric vehicles
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[Replaced by GB/T 18488-2024] Drive motor system for electric vehicles -- Part 1: Specification
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The electrical machines and controllers for electric vehicles -- Part 1: General specification
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General specification of the electrical machines and controllers for electric vehicles
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GB/T 18488-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.120
CCS T 47
Replacing GB/T 18488.1-2015, GB/T 18488.2-2015
Drive Motor System for Electric Vehicles
ISSUED ON: MAY 28, 2024
IMPLEMENTED ON: MAY 28, 2024
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 6
4 Model Naming ... 8
5 Technical Requirements ... 8
5.1 General Items ... 8
5.2 Input & Output Characteristics ... 10
5.3 Safety ... 12
5.4 Environmental Adaptability ... 14
5.5 Electromagnetic Compatibility Performance ... 19
6 Test Methods ... 19
6.1 Test Preparation ... 19
6.2 Tests of General Items... 21
6.3 Test of Input & Output Characteristics ... 24
6.4 Safety Test ... 30
6.5 Environmental Adaptability Test ... 32
6.6 Electromagnetic Compatibility Test ... 44
7 Inspection Rules ... 45
7.1 Consistency Inspection ... 45
7.2 Type Inspection ... 45
8 Marking and Identification ... 46
8.1 Lead Wires and Terminals ... 46
8.2 Nameplate of Drive Motor ... 46
8.3 Nameplate of Drive Motor Controller ... 46
8.4 Nameplate of Integrated Drive Motor System ... 47
8.5 Warning against Danger ... 47
Appendix A (informative) Model Naming of Drive Motors, Drive Motor Controllers
and Drive Motor Systems ... 48
Appendix B (normative) Technical Requirements and Test Methods for Split Drive
Motor Systems ... 53
Appendix C (normative) Inspection Classification ... 60
Bibliography ... 63
Drive Motor System for Electric Vehicles
1 Scope
This document specifies the model naming, technical requirements, test methods, inspection
rules, marking and identification of drive motor system for electric vehicles.
This document is applicable to drive motor systems, drive motors and drive motor controllers
for electric vehicles.
Vehicle motors that only have the function of generating electricity, and their controllers may
take this document as a reference.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 1971 Rotating Electrical Machines - Terminal Markings and Direction of Rotation
GB/T 2900.25 Electrotechnical Terminology - Rotating Electrical Machines
GB/T 2900.33 Electrotechnical Terminology - Power Electronics
GB/T 4208-2017 Degrees of Protection Provided by Enclosure (IP code)
GB/T 12673 Motor Vehicle Main Dimensions Measurement Method
GB/T 15089 Classification of Power-driven Vehicle and Trailers
GB 18384 Electrically Propelled Road Vehicles - Safety Specifications
GB/T 18655-2018 Vehicles, Boats and Internal Combustion Engines - Radio Disturbance
Characteristics - Limits and Methods of Measurement for the Protection of On-board Receivers
GB/T 19596-2017 Terminology of Electric Vehicles
GB/T 21437.2 Road Vehicles - Test Method of Electrical Disturbances from Conduction and
Coupling - Part 2: Electrical Transient Conduction along Supply Lines Only
GB/T 33014.2 Road Vehicles - Component Test Methods for Electrical / Electronic
Disturbances from Narrowband Radiated Electromagnetic Energy - Part 2: Absorber-lined
Shielded Enclosure
The drive motor system shall be flexibly idling, without abnormal noise (such as: friction
between the stator and rotor, periodic abnormal noise, abnormal noise after bearing damage,
and abnormal noise caused by tiny foreign objects stuck in the rotating parts, etc.) or jamming.
5.1.2 Appearance
5.1.2.1 The outer surface of the drive motor system shall have no obvious damage or
deformation, and the coating shall not peel off.
5.1.2.2 If a nameplate is installed, the nameplate of the drive motor system shall be squarely
and firmly installed, with clear writing.
5.1.2.3 The lead wires or terminals of the drive motor system shall be intact, and the fastener
connections shall not be loose.
5.1.2.4 The drive motor and drive motor controller shall satisfy the requirements of 5.1.2.1 ~
5.1.2.3.
5.1.3 Cooling circuit sealing performance of liquid cooling system
5.1.3.1 The cooling circuit of the drive motor system with liquid cooling system shall be able
to withstand a pressure of no less than 200 kPa.
5.1.3.2 For the drive motor system whose cooling circuit is connected to the interior of the
cavity, it shall satisfy the product technical specifications and be indicated in the report.
5.1.3.3 If the cooling circuit of the drive motor system has transition joints, they may be
respectively measured or satisfy the product technical specifications and be indicated in the
report.
5.1.4 Insulation resistance
5.1.4.1 For the split drive motor system whose DC bus voltage is Class B voltage, the insulation
resistance shall satisfy the requirements of Appendix B.
5.1.4.2 For the integrated drive motor system whose DC bus voltage is Class B voltage, the
insulation resistance between the DC power terminal and the shell, and between the DC power
terminal and the signal terminal shall not be less than 1 M.
NOTE: when the signal ground of the drive motor controller is short-circuited to the shell, only the
insulation resistance test between the DC power terminal and the shell is required.
5.1.5 Voltage resistance
5.1.5.1 For the split drive motor system whose DC bus voltage is Class B voltage, the voltage
resistance shall satisfy the requirements of Appendix B.
5.1.5.2 For the integrated drive motor system whose DC bus voltage is Class B voltage, between
not exceeding 30 minutes, 5.2.2 and 5.2.3 are not required, and shall be indicated in the
report.
5.2.4 Peak torque
5.2.4.1 The peak torque of the drive motor system of Category-M1 and Category-N1 vehicles in
a duration of 10 seconds shall not be lower than what is specified in the product specifications,
and there shall be no alarms or abnormalities.
5.2.4.2 The peak torque of the drive motor system of vehicles other than Category-M1 and
Category-N1 vehicles in a duration of 30 seconds shall not be lower than what is specified in
the product specifications, and there shall be no alarms or abnormalities.
5.2.5 Peak power
5.2.5.1 The peak power of the drive motor system of Category-M1 and Category-N1 vehicles in
a duration of 10 seconds shall not be lower than what is specified in the product specifications,
and there shall be no alarms or abnormalities.
5.2.5.2 The peak power of the drive motor system of vehicles other than Category-M1 and
Category-N1 vehicles in a duration of 30 seconds shall not be lower than what is specified in
the product specifications, and there shall be no alarms or abnormalities.
5.2.6 Maximum working speed
The maximum working speed of the drive motor system shall not be lower than what is
specified in the product specifications. When working at the maximum power allowed at this
speed, the duration shall satisfy the stipulations of 5.2.5, and there shall be no alarms or
abnormalities.
5.2.7 Drive motor system efficiency
5.2.7.1 Under the rated voltage, the maximum efficiency of the drive motor system shall not be
less than 85%.
5.2.7.2 Under the rated voltage, the percentage of the high efficiency working area (with an
efficiency not lower than 85%) of the drive motor system to the total working area shall satisfy
the product technical specifications.
5.2.8 Control accuracy
5.2.8.1 Control accuracy of speed
For the drive motor system with speed control function, when the drive motor shaft extension
speed is below 10,000 r/min, the control accuracy shall be within the range of 50 r/min ~ 50
r/min; when the drive motor shaft extension speed is 10,000 r/min and above, the control
accuracy shall be within the range of 0.5% ~ 0.5%.
5.2.8.2 Control accuracy of torque
5.2.8.2.1 For the drive motor system with torque control function and a peak torque of not
greater than 500 N m, when the drive motor shaft extension torque is below 100 N m, the
control accuracy shall be within the range of 5 N m ~ 5 N m; when the drive motor shaft
extension torque is 100 N m and above, the control accuracy shall be within the range of 5%
~ 5%.
5.2.8.2.2 For the drive motor system with torque control function and a peak torque of greater
than 500 N m, when the drive motor shaft extension torque is not greater than one-fifth of the
peak torque, the control accuracy shall be within the range of 1% ~ 1% of the peak torque;
when the drive motor shaft extension torque is greater than one-fifth of the peak torque, the
control accuracy shall be within the range of 5% ~ 5%.
5.2.9 Locked-rotor torque
5.2.9.1 For the drive motor system of Category-M1 and Category-N1 vehicles with locked-rotor
torque control requirements, the maximum locked-rotor torque for a duration of not less than 5
seconds shall not be lower than the product technical specifications, and there shall be no alarms
or abnormalities.
5.2.9.2 For the drive motor system of vehicles other than Category-M1 and Category-N1
vehicles with locked-rotor torque control requirements, the maximum locked-rotor torque for a
duration of not less than 10 seconds shall not be lower than the product technical specifications,
and there shall be no alarms or abnormalities.
5.2.10 Feed characteristics
When the drive motor system operates in the feed state, the input & output characteristics shall
satisfy the requirements of 5.2.1 ~ 5.2.8.
5.3 Safety
5.3.1 Potential equalization
5.3.1.1 The resistance between the accessible conductive parts and the shell grounding point in
the drive motor system whose DC bus voltage is Class B voltage shall not be greater than 0.1
.
5.3.1.2 If there are two or more grounding points, they shall be respectively measured. For the
split drive motor system, the drive motor and the drive motor controller shall be respectively
measured.
5.3.1.3 When the split drive motor and the drive motor controller are located in the potential
equalization path, the resistance between the two conductive parts with a distance of no more
than 2.5 m shall not be greater than 0.2 .
5.3.1.4 The grounding point shall have a grounding mark. If there is no specific grounding point,
a) Implementation mode;
b) Test results.
5.3.3 DC bus capacitor discharge time
5.3.3.1 The drive motor system whose DC bus voltage is Class B voltage shall have a passive
discharge function. When the drive motor controller is cut off from the DC bus terminal power
supply, the time it takes for the DC bus capacitor of the drive motor controller to discharge to
60 V shall not be greater than 5 minutes.
5.3.3.2 When the drive motor system has active discharge requirements, after the drive motor
controller is cut off from the DC bus terminal power supply, the time it takes for the DC bus
capacitor of the drive motor controller to discharge to 60 V shall not be greater than 3 seconds.
5.4 Environmental Adaptability
5.4.1 Low temperature
5.4.1.1 The drive motor system whose DC bus voltage is Class B voltage shall be able to
withstand low-temperature storage at 40 C for no less than 12 hours. The drive motor system
with other voltage levels shall be able to withstand the low-temperature storage specified in the
product technical specifications.
5.4.1.2 After storage, maintain the temperature inside the chamber unchanged. The insulation
resistance retested in the chamber shall comply with the stipulations of 5.1.4, then, perform a
no-load starting at the rated voltage. After starting, in accordance with the torque and speed
specified in the product technical specifications, operate for 0.5 hour, there shall be no alarms
or abnormalities.
5.4.1.3 After returning to normal, the drive motor system shall be able to normally operate at
peak torque and peak power at the rated voltage. The drive motor system of Category-M1 and
Category-N1 vehicles shall last for 10 seconds. The drive motor system of vehicles other than
Category-M1 and Category-N1 vehicles shall last for 30 seconds.
5.4.2 High temperature
5.4.2.1 High-temperature storage
5.4.2.1.1 The drive motor system shall be able to withstand high-temperature storage at 85 C
for no less than 12 hours.
5.4.2.1.2 After storage, maintain the temperature inside the chamber unchanged. The insulation
resistance retested in the chamber shall comply with the stipulations of 5.1.4.
5.4.2.1.3 After returning to normal, the drive motor system shall be able to normally operate at
peak torque and peak power at the rated voltage. The drive motor system of Category-M1 and
Category-N1 vehicles shall last for 10 seconds. The drive motor system of vehicles other than
test in accordance with the product technical specifications.
5.4.5.3 In accordance with 6.5.5, carry out the test, and there shall be no abnormal phenomena,
for example, interruption of signal transmission.
5.4.5.4 After the test, the drive motor system shall not have mechanical damage or deformation
that affects high-voltage safety. The retested insulation resistance shall comply with the
stipulations of 5.1.4, and the retested sealing of the liquid cooling circuit shall comply with the
stipulations of 5.1.3.
5.4.5.5 After the test, the drive motor system shall be able to normally operate at peak torque
and peak power at the rated voltage. The drive motor system of Category-M1 and Category-N1
vehicles shall last for 10 seconds. The drive motor system of vehicles other than Category-M1
and Category-N1 vehicles shall last for 30 seconds.
5.4.5.6 When the sample under test has multiple directions or the direction is unclear, the test
shall be respectively conducted in three directions.
5.4.5.7 If there are special requirements, during the test, the motor operation can be controlled,
and the operating speed is proposed by the manufacturer and indicated in the report.
5.4.6 Waterproof and dustproof
5.4.6.1 The dustproof and waterproof requirements of the drive motor system shall satisfy at
least one of the following two requirements.
a) Satisfy the protection requirements of IP67 or higher specified in GB/T 4208-2017.
b) If there are clear stipulations on the installation position in the product technical
specifications, the dustproof and waterproof levels of the drive motor system shall be
determined based on the layout height of the vehicle under no load. The requirements
are as follows:
---If the height of the lower surface of the drive motor system from the ground is less
than 300 mm, it shall satisfy the protection requirements of IP67 or higher
specified in GB/T 4208-2017;
---If the height of the lower surface of the drive motor system from the ground is not
less than 300 mm, and there is no obstruction underneath the components, the
high-voltage components shall satisfy the protection requirements of IP55 or
higher specified in GB/T 4208-2017;
---If the height of the lower surface of the drive motor system from the ground is not
less than 300 mm, and there is an obstruction underneath the components, the high-
voltage components shall satisfy the protection requirements of IP54 or higher
specified in GB/T 4208-2017.
5.4.6.2 The fan protection level of the air cooling system shall satisfy the product technical
specifications.
5.4.6.3 For the drive motor system that shares a shell with other components, the drive motor
system can be tested in the form of complete-vehicle installation.
5.4.6.4 In accordance with 6.5.6, carry out the test, and the retested insulation resistance shall
comply with the stipulations of 5.1.4.
5.4.6.5 The drive motor system shall be able to normally operate at peak torque and peak power
at the rated voltage. The drive motor system of Category-M1 and Category-N1 vehicles shall
last for 10 seconds. The drive motor system of vehicles other than Category-M1 and Category-
N1 vehicles shall last for 30 seconds.
5.4.7 Salt spray
5.4.7.1 The salt spray resistance of the drive motor system shall be able to satisfy the relevant
stipulations of 5.4.3.2 in GB/T 42284.4-2022, and the test period shall be no less than 48 hours.
5.4.7.2 In accordance with 6.5.7, carry out the test. The visual inspection of the drive motor
system shall comply with the requirements of 5.1.2.
5.4.7.3 The retested insulation resistance shall comply with the stipulations of 5.1.4, and the
retested sealing of the liquid cooling circuit shall comply with the stipulations of 5.1.3.
5.4.7.4 After returning to normal, the drive motor system shall be able to normally operate at
peak torque and peak power at the rated voltage. The drive motor system of Category-M1 and
Category-N1 vehicles shall last for 10 seconds. The drive motor system of vehicles other than
Category-M1 and Category-N1 vehicles shall last for 30 seconds.
5.4.8 Ice water impact
5.4.8.1 When the DC bus terminal is de-energized and no coolant liquid is introduced to the
cooling circuit, the drive motor system shall be able to withstand the ice water impact test
specified in 5.3.2 and 5.3.3 in GB/T 42284.4-2022. Specifically speaking, carry out the splash
test for 10 times and the immersion test once, and Tmax is selected to be 85 C.
5.4.8.2 In accordance with 6.5.8, carry out the test. The retested insulation resistance shall
comply with the stipulations of 5.1.4, and the retested sealing of the liquid cooling circuit shall
comply with the stipulations of 5.1.3.
5.4.8.3 After returning to normal, the drive motor system shall be able to normally operate at
peak torque and peak power at the rated voltage. The drive motor system of Category-M1 and
Category-N1 vehicles shall last for 10 seconds. The drive motor system of vehicles other than
Category-M1 and Category-N1 vehicles shall last for 30 seconds.
5.4.8.4 If the height of the lower surface of the drive motor system from the ground is not less
than 300 mm, the immersion test in 5.3.3 of GB/T 42284.4-2022 does not need to be performed.
6.1.6 Signal shielding
When necessary, related signals shall be simulated or shielded through other methods.
6.2 Tests of General Items
6.2.1 General inspection
6.2.1.1 During the inspection, the drive motor system under test is not connected to high-voltage
and low-voltage power supplies, no external loads are connected, and the power lines are not
short-circuited.
6.2.1.2 Rotate the output shaft of the drive motor system and check for abnormal noise by
listening.
6.2.2 Appearance inspection
Through visual inspection and touching, perform appearance inspection.
6.2.3 Cooling circuit sealing performance test of liquid cooling system
6.2.3.1 For the split drive motor system, the cooling circuits of the drive motor and the drive
motor controller should be separated and respectively measured.
6.2.3.2 Before the test, the surface of the drive motor system shall not be coated with a coating
that can prevent leakage, and chemical anti-corrosion treatment without sealing effect can be
carried out.
6.2.3.3 During the test, the temperature of the test medium shall be consistent with the
temperature of the test environment and maintain stable.
6.2.3.4 The medium used in the test can be gas or liquid. The gas medium should be dry, clean
and oil-free compressed air, and other non-harmful gases. The liquid medium should be water
containing rust inhibitor, kerosene or non-corrosive liquid with a viscosity no higher than water.
6.2.3.5 When using a gas medium for the test, the liquid in the circuit needs to be blown out
and dried; one end of the cooling circuit of the sample under test is blocked, but deformation
that may affect the sealing performance cannot be generated. Fill the circuit with the pressure
test medium specified in 5.1.3, the pressure rise time shall not be greater than 15 seconds, and
the pressure holding (equilibrium) time shall not be less than 1 minute. After disconnecting
from the gas source, the pressure drop within 1 minute shall not be greater than 300 Pa.
6.2.3.6 When using a liquid medium for the test, the air in the cooling circuit cavity needs to be
purged, and the test method shall comply with the product technical specifications.
6.2.3.7 After the test, reduce the test medium pressure to the pre-test level.
6.2.4 Test of insulation resistance
with B.1.2.
6.2.5.2 Voltage resistance test of integrated drive motor system
6.2.5.2.1 Before the test, each DC power terminal of the drive motor system shall be short-
circuited, and each signal terminal shall be short-circuited.
6.2.5.2.2 During the voltage resistance test of the DC power terminal and the shell, and the DC
power terminal and the controller signal terminal of the drive motor system, other terminals or
components not participating in the test shall be connected to the shell, and the shell shall be
grounded.
6.2.5.2.3 In accordance with the test voltage requirements in Table 1, set the test voltage. Carry
out the test between the DC power terminal and the shell, and between the DC power terminal
and the signal terminal of the drive motor system.
6.2.5.2.4 The full value test voltage specified in Table 1 is loaded between the DC bus terminal
and the shell of the drive motor. During the loading process, the applied voltage shall start from
not exceeding half of the full value of the test voltage, then, at a speed of not exceeding 5% of
the full value, uniformly increase to the full value or in sections. The time for the voltage to
increase from half value to full value shall not be less than 10 seconds, and the full value test
voltage shall last for 1 minute.
6.2.5.2.5 After the test is completed, when the voltage drops to less than one-third of the full
value, the power supply can be disconnected, and the capacitance among the tested winding,
the power terminal and the shell can be discharged.
6.2.6 Overspeed test
6.2.6.1 The sample under test shall be run-in in accordance with the working conditions
specified in the product technical specifications.
6.2.6.2 Before the test, the assembly quality of the drive motor, especially the rotating part,
shall be carefully checked, and corresponding protective measures shall be taken to prevent
debris or parts from flying out when the speed increases. For the integrated drive motor system
with more than one gear, an appropriate gear shall be selected for the test.
6.2.6.3 The no-load rotation or prime mover (dynamometer) drag method can be selected for
the drive motor under test in accordance with the specific circumstances:
a) When adopting the method of no-load rotation for the drive motor under test, the drive
motor under test, under the control of the drive motor controller, smoothly rotates to
and maintains the test speed specified in 5.1.6. At this speed point, the no-load running
time satisfies the stipulations of 5.1.6;
b) When adopting the prime mover (dynamometer) drag method for the test, the drive
motor under test is de-energized. Under the drag of the prime mover (dynamometer),
the drive motor rises to the test speed specified in 5.1.6 at a speed not exceeding 1,000
r/min per second and maintains. At this speed point, the no-load running time satisfies
the stipulations of 5.1.6.
6.2.6.4 As the speed increases, when the drive motor reaches the peak speed, observe the motor
operation and confirm that there are no abnormal phenomena, then, increase the speed at an
appropriate speed, until reaching the specified speed.
6.2.6.5 After the test, reduce the speed of the drive motor under test at an appropriate speed,
until it stops.
6.3 Test of Input & Output Characteristics
6.3.1 Preparation of bench test
6.3.1.1 The sample under test shall be run-in in accordance with the working conditions
specified in the product technical specifications.
6.3.1.2 Confirm that all connections are correct and secure, and that the control functions of the
dynamometer and the drive motor system under test are normal.
6.3.1.3 For the liquid cooling system, the liquid cooling inlet temperature of the drive motor
system is 50 C, the flow rate is set in accordance with the product technical specifications, and
the working temperature of the drive motor system and transmission device lubricant is 50 C;
for other cooling modes, set the cooling conditions in accordance with the product technical
specifications.
6.3.1.4 During measurement, the readings of each instrument shall be simultaneously read and
recorded.
6.3.1.5 During measurement, the measurement point of voltage and current shall be at the drive
motor controller close to the terminal. The working torque and speed of the drive motor should
be directly measured at the shaft extension end of the drive motor. At this time, there shall be a
rigid connection between the shaft extension end of the drive motor and the torque and speed
measurement equipment.
6.3.1.6 For the drive motor system with more than one gear transmission device, each gear shall
be respectively measured and recorded.
6.3.1.7 For the drive motor system with a transmission device, the test results of 5.2.2 ~ 5.2.9
are included in the efficiency and speed ratio of the transmission device and indicated in the
report. The efficiency and speed ratio of the transmission device are provided by the
manufacturer and serve as an attachment to the report.
6.3.2 Test of working voltage range
6.3.2.1 During the test, respectively set the DC bus voltage of the drive motor system at the
highest working voltage and the lowest working voltage that satisfy the requirements of 5.2.1,
......
GB/T 18488.1-2015
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040
T 35
Replacing GB/T 18488.1-2006
Drive motor system for electric vehicles -
Part 1. Specification
ISSUED ON. FEBRUARY 04, 2015
IMPLEMENTED ON. SEPTEMBER 01, 2015
Issued by.
General Administration of Quality Supervision, Inspection
and Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 8
4 Working system, voltage class and type designation ... 10
5 Requirements ... 10
6 Inspection rules ... 20
7 Signs and labels ... 21
Annex A ... 23
Annex B ... 26
Bibliography ... 29
Foreword
GB/T 18488 Drive Motor System for Electric Vehicles is divided into two parts.
— Part 1. General specification;
— Part 2. Test methods.
This Part is part 1 of GB/T 18488.
This Part is drafted in accordance with the rules provided by GB/T 1.1-2009.
This Part replaces GB/T 18488.1-2006 The Electrical Machines and Controllers for Electric
Vehicles - Part 1. General Specification. Compared with GB/T 18488.1-2006, in addition to
the editing modifications, the main technical changes in this Part are as follows.
— Add “terms and definitions”;
— Revise the provision “working system”; the previous S1-S9 working systems are
change into “formulated by manufacturer and user by reference to GB 755”;
— Modify the provision “voltage class”; add six classes - “60 V, 72 V, 80 V, 650 V, 700
V, 750 V” based on the previous voltage classes, and specify the “144 V, 288 V, 312
V, 336 V, 384 V, 600 V” as preferred grades;
— Add the provision “type designation for drive motor and drive motor controller”;
— Modify the provision “mechanical strength of drive motor controller enclosure”;
“gravity generated by adding 100 kg mass on an area of 30 cmX30 cm” is changed
into “not lower than 10 kPa pressure”;
— Modify the provision “sealing performance for cooling circuit of liquid cooling system”;
the pressure limit that reflects sealing state is changed from “(40±5) kPa” to be “not
lower than 200 kPa”;
— Modify the provision “insulation resistance of drive motor stator winding for
enclosure”; specify that “when insulation resistance calculated by formula (1) is lower
than 0.38 MΩ, then it shall be examined according to 0.38 MΩ”; “rated voltage” in
previous formula is changed into “maximum working voltage”;
— Add the provision “insulation resistance of drive motor stator winding for temperature
sensor”;
— Modify the provision “drive motor controller insulation resistance”; modify the
previous provision “hot-state insulation resistance is not lower than 1 MΩ” to be
“cold-state and hot-state insulation resistance are both not lower than 1 MΩ”;
— Modify the provision “inter-turn impact withstand-voltage of drive motor winding”,
specify the specific provisions for drive motor armature winding, drive motor exciting
winding, and brushed DC motor armature winding respectively;
— Add the provision - power frequency withstand-voltage of motor winding for
temperature sensor;
— Modify the provisions “power frequency withstand-voltage of drive motor winding for
enclosure” and “power frequency withstand-voltage of drive motor controller”; the
wording of “nominal voltage” is changed to “maximum working voltage”;
— Modify the provision “temperature rise”; change the quoted standard from “GB 755-
2000” to “GB 755-2008”, meanwhile, delete the provision - controller temperature
rise;
— Modify “voltage fluctuation”; change “voltage fluctuation” to “voltage range”; and
modify the provision working voltage range; “drive motor system under rated supply
voltage of 125% is decreased to 75% of rated voltage” is change to “voltage range
of drive motor system shall meet provisions of product technical documents”;
— Add the provisions “continuous torque”, “continuous power”, “peak-value torque”,
“peak-value power”, “peak-value efficiency of drive motor system”, “high-efficient
working area of drive motor system”, “speed control accuracy”, “torque control
accuracy”, “respond time of speed”, “respond time of torque”, “drive motor controller
continuous current”, “drive motor controller short-time current”, and “controller
maximum current”;
— Modify “regenerated energy feedback characteristics”; “regenerated energy
feedback characteristics” is changed to “feeding characteristics”;
— Add the provision “drive motor controller support capacitor discharge duration”;
— Add the provision “low temperature storage”;
— Modify the provision “low temperature operation”; low temperature limit is changed
from “-20°C” to “-40°C”; “4 h of normal operation under low temperature” is changed
to “retest insulation resistance in box after test”;
— Add the provision “high temperature storage”;
— Modify the provision “high temperature operation”; high temperature limit is changed
from “+ 40°C” to “+55°C”; and specify that “in case of special requirements, the
temperature limits specified in Table 3 shall be followed, additional tests shall be
made according to the test requirements determined by manufacturer and user
through consultation”;
— Modify the provision “damp heat”; “shall be able to withstand for 48 h steady-state
damp-heat test under 40°C with relative humidity of 95%” is changed to “shall be
able to withstand for 48 h steady-state damp-heat test under (40±2)°C with relative
Drive motor system for electric vehicles
Part 1. General specification
1 Scope
This Part of GB/T 18488 specifies the working system, voltage class, type designation,
requirements, inspection rules, signs and labels, etc. of drive motor system for electric
vehicles.
This Part is applicable to drive motor system for electric vehicles, drive motors, and drive
motor controllers. Vehicle motors and their controllers that only possess power
generation function may refer to this Part for implementation.
2 Normative references
Following documents are indispensable for application of this document. For the dated
documents so quoted, only dated versions apply to this document. For the undated
documents so quoted, the latest versions (including all modification sheets) apply to this
document.
GB 755-2008 Rotating electrical machines - Rating and performance
GB1971 Rotating electrical machines - Terminal markings and direction of rotation
GB/T 2423.17 Environmental testing for electric and electronic products - Part 2. Test
method - Test Ka. Salt mist
GB 2894 Safety signs and guideline for the use
GB/T 2900.25 Electrotechnical terminology - Rotating electrical machines
GB/T 2900.33 Electrotechnical terminology - Power electronics
GB 4208 Degrees of protection provided by enclosure (IP code)
GB/T 4942.1 Degrees of protection provided by the integral design of rotating
electrical machines (IP code) - Classification
GB/T 19596 Terminology of electric vehicles
GB/T 28046.3-2011 Road vehicles - Environmental conditions and testing for
electrical and electronic equipment - Part 3. Mechanical loads
5.2.2 Shape and installation dimension
The shape and installation dimension of drive motor and drive motor controller shall
conform to the requirements determined by manufacturer and user through consultation.
5.2.3 Mass
It shall not exceed the value determined by manufacturer and user through consultation.
5.2.4 Mechanical strength for enclosure of drive motor controller
Enclosure of drive motor controller shall be able to withstand pressure not less than 10 kPa
and there is no obvious plastic deformation.
5.2.5 Sealing performance for cooling circuit of liquid cooling system
The liquid cooling system of drive motor and drive motor controller shall be able to
withstand pressure not less than 200 kPa and there is no leakage.
5.2.6 Cold-state DC resistance for stator winding of drive motor
Cold-state DC resistance of drive motor stator winding shall meet provisions of product
technical document.
Note. product technical documents can be product specification, technical agreement or
other instructions determined by manufacturer and user through consultation.
5.2.7 Insulation resistance
5.2.7.1 Insulation resistance of drive motor stator winding for enclosure
5.2.7. Cold-state insulation resistance value of drive motor stator winding for enclosure
shall be more than 20 MΩ.
5.2.7.1.2 Hot-state insulation resistance value of drive motors stator winding shall not be
less than the value calculated in formula (1).
Where.
R — hot-state insulation resistance of drive motor stator winding for enclosure, with unit
of megohm (MΩ);
Udmax — maximum voltage, with unit of volt (V);
P — continuous power of drive motor, with unit of kilowatt (kw).
5.6.4.1.2 Drive mo...
......
GB/T 18488.1-2006
GB
ICS 43.120
T 47
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Replacing GB/T 18488.1-2001
The Electrical Machines and Controllers for Electric
Vehicles -
Part 1. General Specification
ISSUED ON. DECEMBER 1, 2006
IMPLEMENTED ON. JULY 1, 2007
Jointly Issued by. General Administration of Quality Supervision, Inspection
and Quarantine (AQSIQ);
Standardization Administration Committee (SAC) of the
People's Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Duty and Limitation ... 5
4 Environmental Conditions ... 7
5 Technical Requirements ... 8
6 Inspection Test Items ... 11
7 Type Test ... 12
8 Marking, Packaging, Transportation and Storage ... 12
Appendix A ... 19
Appendix B ... 20
Foreword
Under the general title "The Electrical Machines and Controllers for Electric Vehicles", GB/T
18488 includes two parts.
- Part 1. General Specification;
- Part 2. Test Methods.
This Part is the Part 1 of GB/T 18488.
This Part is the revision of GB/T 18488.1-2001. From the date of implementation, it shall
replace GB/T 18488.1-2001 "General Specification of the Electrical Machines and
Controllers for Electric Vehicles".
The main changes include.
1) The relevant normative references are added. It mainly includes GB/T 19596-2004,
QC/T 413-2002 and GB/T 3859.1-1993.
2) Chapter 3 “Definitions" of the previous version is deleted.
3) Chapter 4 and Chapter 5 of the previous version are supplemented with necessary
content. It mainly adds the content of S1~ S9 duty.
Appendix A and Appendix B of this Part are informative.
This Part was proposed by National Technical Committee on Automobiles of Standardization
Administration of China.
This Part shall be under the jurisdiction of National Technical Committee on Automobiles of
Standardization Administration of China.
Drafting organizations of this Part. Institute of Electrical Engineering of Chinese Academy of
Sciences, Beijing Institute of Technology, and Zhuzhou Electric Locomotive Research
Institute.
Chief drafting staffs of this Part. Wen Xuhui, Liu Tongyan, Guo Shuying, Zhang Chengning,
Liu Jun, and Ju Long.
The previous version replaced by this Part is.
- GB/T 18488.1-2001.
The Electrical Machines and Controllers for Electric Vehicles -
Part 1. General Specification
1 Scope
This Part specifies the requirements such as duty, quota, environmental conditions, technical
requirements, inspection test item and type test of the electrical machines and controllers of
electric vehicles.
This Part applies to the electrical machines and controllers for electric vehicles.
All the items relevant to electrical machines which are not specified in this Part shall comply
with GB 755-2000. If there are special requirements, the user and manufacturer may specify
them in special technical agreement.
All the items relevant to driving controllers which are not specified in this Part shall comply
with GB/T 3859.1-1993. If there are special requirements, the user and manufacturer may
specify them in special technical agreement.
2 Normative References
The following documents contain provisions which, through reference in this Part of GB/T
18488, constitute provisions of this Standard. For dated reference, subsequent amendments
(excluding corrigendum) or revisions of these versions do not apply. However, parties who
enter into agreement based on this Part are encouraged to investigate the possibility of
applying the most recent editions of the standards indicated below. For undated references,
the latest edition of the document referred to applies.
GB 755-2000 Rotating Electrical Machines-Rating and Performance (idt IEC
60034-1.1996)
GB/T 2423.17-1993 Basic Environmental Testing Procedures for Electric and Electronic
Products Test Ka. Salt Mist (eqv IEC 60068-2-11. 1981)
GB/T 3859.1-1993 Semiconductor Convertors-Specification of Basic Requirements (eqv
IEC 60146-1-1. 1991)
GB/T 4772.1-1999 Dimensions and Output Series for Rotating Electrical Machines-Part
1.Frame Numbers 56 to 400 and Flange Numbers 55 to 1080
GB/T 4942.1-2006 Degrees of Protection Provided by the Integral Design of Rotating
Electrical Machines (IP Code)- Classification (IEC 60947-1.
2000,IDT)
GB/T 4942.2-1993 Degrees of Protection Provided by Enclosures for Low-voltage
Apparatus (eqv. IEC 60947-1.1988)
GB/T 10068-2000 Mechanical Vibration of Certain Machines with Shaft Heights 56 mm
and Higher-Measurement, Evaluation and Limits of Vibration (idt
IEC idt IEC 60034-14. 1996)
GB 10069.3 Measurement of Airborne Noise Emitted by Rotating Electrical Machines
and the Noise Limits-Part 3. Noise Limits (IEC 60034-9. 1997, IDT)
GB/T 12113-2003 Methods of Measurement of Touch Current and Protective Conductor
Current (IEC 60990.1999, IDT)
GB/T 12665-1990 Requirements of Damp-heat Testing of Electrical Machine for Service
in General Environmental Condition
GB/T 14023-2006 Vehicles Boats and Internal Combustion Engine Driven
Devices-Radio Disturbance Characteristics-Limits and Methods of
Measurement (CISPR 12. 2005, IDT)
GB 14711-2006 Safety Requirements of Small and Medium Size Rotating Electrical
Machines
GB/T 17619-1998 Limits and methods of testing for immunity of electrical / electronic
sub-assemblies in vehicles to electromagnetic radiation
GB/T 19596-2004 Terminology of Electric Vehicles (ISO 8713.2002, NEQ)
QC/T 413-2002 Basic Specification for Automotive Electrical Equipment
3 Duty and Limitation
3.1 Duty
3.1.1 Duty S1 - continuous running duty
Operate to thermal steady state under constant load, see Figure 1.
This duty is referred to as S1.
3.1.2 Duty S2 - short-time duty
When operating under rated load, periodic overload is allowed to apply. Overload
multiplication; and each-time overload duration, interval time; and the entire operation time
shall be specified in the product standard, see Figure 2.
This duty is referred to as S2, in-short. The duration of duty shall be marked subsequently.
For example. S2 60 min
3.1.3 Duty S3 - intermittent periodic duty
Operate at a series of same operation cycles. Each cycle includes a period of constant load
operation time, and a period of off-machine and off-energy time, see Figure 3. For such duty,
every periodic starting current has no significant effect to temperature rise.
This duty is referred to as S3. The load duration factor shall be marked subsequently.
For example. S3 25%
3.1.4 Duty S4 - intermittent periodic duty with starting
Operate at a series of same operation cycles. Each cycle includes a period of starting time
which has significant influence to temperature rise; a period of constant load operation time;
and a period of off-machine and off-energy time, see Figure 4.
Electrical machines and controllers shall have good insulation performance. And the test shall
be conducted according to the measurement method specified in national standard GB/T
12113-2003. When work normally, its hot-state contact current shall not be larger than 5 mA.
5.20 Noise
The noise produced by the operation of electrical machines and controllers shall meet the
noise limit requirements specified in GB 10069.3-2006.
5.21 Vibration
The vibration of electrical machine shall be reference to the vibration limit requirements
specified in GB 10068-2000.
5.22 Electromagnetic compatibility (EMC)
5.22.1 Electromagnetic radiation
The electromagnetic radiation produced during the operation of electrical machines and
controllers shall not exceed the permissible values of radiated interference specified in
Chapter 4 of GB 14023-2006.
5.22.2 Electromagnetic radiation noise immunity
Test shall be conducted according to the measurement method specified in Chapter 4 and the
anti-interference level specified in Table 1 of GB/T 17619-1998. The electrical machines and
controllers can work normally under the normal service conditions.
5.23 Durability
It shall meet the assessment requirements specified in the technical agreement of the
purchaser and manufacturer.
6 Inspection Test Items
Each electrical machine and controller must be inspected with the following items. Inspection
test items include.
a) Mechanical inspection, including the inspections of turning rotating, installation
dimension, external dimension, quality, appearance and nameplate contents;
b) Cold DC resistance value of electrical machine stator winding;
c) Interturn insulation of electrical machine winding;
d) Mechanical strength of controller shell;
e) The insulation resistance BETWEEN electrical machine stator winding AND shell;
f) Withstand voltage;
g) No-load inspection;
h) Locked-rotor torque and locked-rotor curren...
......
| Standard ID | GB/T 18488-2024 (GB/T18488-2024) | | Description (Translated English) | Drive motor system for electric vehicles | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | T47 | | Classification of International Standard | 43.120 | | Word Count Estimation | 46,423 | | Date of Issue | 2024-05-28 | | Date of Implementation | 2024-05-28 | | Drafting Organization | China Automotive Technology Research Center Co., Ltd., Suzhou Huichuan United Power System Co., Ltd., China First Automobile Co., Ltd., China Automotive Research Institute New Energy Vehicle Inspection Center (Tianjin) Co., Ltd., BYD Auto Industry Co., Ltd., Beijing Automotive Research Institute Co., Ltd., Beijing Institute of Technology, Zeekr Auto (Ningbo Hangzhou Bay New Area) Co., Ltd., Huawei Digital Energy Technology Co., Ltd., Shanghai Automotive Electric Drive Co., Ltd., NIO Automotive Technology (Anhui) Co., Ltd., SAIC Motor Technology Center, Yutong Bus Co., Ltd., Deep Blue Automotive Technology Co., Ltd., SAIC-GM-Wuling Automobile Co., Ltd., Zhuhai Yingbo Electric Co., Ltd., China Automotive Engineering Research Institute Co., Ltd., Beijing CHJ Automotive Technology Co., Ltd. Co., Ltd., Feng | | Administrative Organization | National Technical Committee on Automotive Standardization (SAC/TC 114) | | Proposing organization | Ministry of Industry and Information Technology of the People Republic of China | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | | Standard ID | GB/T 18488.1-2015 (GB/T18488.1-2015) | | Description (Translated English) | Drive motor system for electric vehicles -- Part 1: Specification | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | T35 | | Classification of International Standard | 43.040 | | Word Count Estimation | 22,296 | | Date of Issue | 2015-02-04 | | Date of Implementation | 2015-09-01 | | Older Standard (superseded by this standard) | GB/T 18488.1-2006 | | Quoted Standard | GB 755-2008; GB 1971; GB/T 2423.17; GB 2894; GB/T 2900.25; GB/T 2900.33; GB 4208; GB/T 4942.1; GB/T 19596; GB/T 28046.3-2011; GB/T 29307-2012 | | Drafting Organization | Shanghai electric drive Co., Ltd. | | Administrative Organization | National Automotive Standardization Technical Committee | | Regulation (derived from) | National Standards Bulletin 2015 No. 3 | | Proposing organization | Ministry of Industry and Information Technology of the People's Republic of China | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This Standard specifies the duty electric vehicle drive motor system, voltage level, type designation, requirements, inspection rules and signs and logo. This section applies to electric vehicle drive motor system, drive motor, drive motor controller. Power generation function for only a motor vehicle and its controller, can be performed with reference to this section. | | Standard ID | GB/T 18488.1-2006 (GB/T18488.1-2006) | | Description (Translated English) | The electrical machines and controllers for electric vehicles - Part 1: General specification | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | T47 | | Classification of International Standard | 43.120 | | Word Count Estimation | 22,290 | | Date of Issue | 2006-12-01 | | Date of Implementation | 2007-07-01 | | Older Standard (superseded by this standard) | GB/T 18488.1-2001 | | Drafting Organization | Institute of Electrical Engineering | | Administrative Organization | National Automotive Standardization Technical Committee | | Regulation (derived from) | National Standard Approval Announcement 2006 No.13 (Total No.100); National Standard Announcement 2015 No.3 | | Proposing organization | National Automotive Standardization Technical Committee | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This standard specifies the electric vehicle drive motor and controller working system, fixed, environmental conditions, technical requirements, inspection pilot project and the type test requirements. This section applies to electric vehicle drive motor and controller. |
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