GB/T 18488-2024 English PDF (GBT18488-2024)

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GB/T 18488-2024: Drive motor system for electric vehicles
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 and 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 and 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...