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QC/T 893-2011 English PDF (QCT893-2011)

QC/T 893-2011 English PDF (QCT893-2011)

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QC/T 893-2011: Failure classification and assessment of electrical machine system for electric vehicle

This standard specifies the failure judgment principles, failure modes, and failure classification of the electrical machine system for electric vehicle.
QC/T 893-2011
QC
AUTOMOTIVE INDUSTRY STANDARD
OF THE PEOPLE'S REPUBLIC OF CHINA
ICS 43.040
T 21
Failure classification and assessment of electrical
machine system for electric vehicle
ISSUED ON. DECEMBER 20, 2011
IMPLEMENTED ON. JULY 01, 2012
Issued by. Ministry of Industry and Information Technology of the
People's Republic of China
Notice of Ministry of Industry and Information
Technology of the People's Republic of China
2011 No. 43
The Ministry of Industry and Information Technology has approved 1081
industry standards (as for the standard number, name, main content and date of implementation, SEE Appendix 1) AND 19 non-ferrous, metallurgical
industry standard samples (SEE Appendix 2), including 258 chemical
industry standards, 7 petrochemical industry standards, 43 metallurgical industry standards (including 11 standard samples), 148 non-ferrous industry standards (including 8 standard samples), 92 building materials industry standard 92, 11 rare earth industry standards, 3 gold industry standards, 85 textile industry standards, 125 light industry standards, 49 automotive industry standards, 177 mechanical industry standards, AND 102
communications industry standards, which are hereby announced.
The aforementioned chemical industry standards are published by the
Chemical Industry Press; the petrochemical industry standards are published by the China Petrochemical Press; the metallurgical industry standards are published by the Metallurgical Industry Press; the nonferrous metals, gold, rare earth and textile industry standards are published by China Standard Press; the building material industry standards are published by Building Materials Industry Press; the light industry standards are published by the China Light Industry Press; the machinery industry standards are published by the Machinery Industry Press; the automobile industry standards are
published by the China Planning Press; AND the communications industry
standards area published by the People's Posts and Telecommunications
Press.
Appendix. 49 automotive industry standard number, name and start date of implementation
Ministry of Industry and Information Technology of the People's Republic of China
December 20, 2011
Appendix.
49 automotive industry standard number, name and start date of
implementation
No. Standard number Standard name Replaced standard number
Implementation
date
1 QC/T 893-2011 Failure classification and assessment of electrical machine system for electric vehicles 2012-07-01 2 QC/T 894-2011 On board measurement methods for emissions from heavy-duty hybrid electric vehicles 2012-07-01 3 QC/T 895-2011 On-board conductive charger for electric vehicles 2012-07-01 4 QC/T 896-2011 Interface of electrical machine system for electric vehicles 2012-07-01 5 QC/T 897-2011 Technical specification of battery management system for electric vehicles 2012-07-01 6 QC/T 853-2011 Hexagon flange removing scraps bolts 2012-07-01
7 QC/T 854-2011 Bolt with double end 2012-07-01
8 QC/T 855-2011 Hexalobular socket pan head screws 2012-07-01
9 QC/T 856-2011 Hexagon lobular socket countersunk head screws 2012-07-01 10 QC/T 857-2011 Weld studs 2012-07-01
11 QC/T 858-2011 Hexagon thick nuts-fine thread 2012-07-01
12 QC/T 859-2011 A type square nuts box 2012-07-01
13 QC/T 860-2011 Hexagon weld nuts 2012-07-01
14 QC/T 861-2011 Flat head threaded tubular hexagon blind rivets 2012-07-01 15 QC/T 862-2011 B type square nuts box 2012-07-01
16 QC/T 863-2011 Square weld nuts 2012-07-01
17 QC/T 864-2011 Hexagonal nuts with serrated flange 2012-07-01
18 QC/T 865-2011 Tapping rivets 2012-07-01
19 QC/T 866-2011 Hexalobular socket raised countersunk head screws 2012-07-01 20 QC/T 867-2011 Round weld nut 2012-07-01
21 QC/T 868-2011 Plastic hexagon nuts 2012-07-01
22 QC/T 869-2011 Short-cycle drawn arc welding stud 2012-07-01
Table of Contents
Foreword ... 6
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 7
4 Judgment principles of failure modes ... 7
5 Failure classification ... 8
Appendix A (Normative) Drive motor system failure mode ... 9
APPENDIX B (Informative) Examples of failure mode and classification of drive motor system ... 12
Foreword
This standard was drafted in accordance with the rules specified in GB/T 1.1-2009.
This standard was proposed by AND shall be under the jurisdiction of the National Automotive Standardization Technical Committee (SAC/TC 114).
The drafting organizations of this standard. Hunan CSR Times Electric
Vehicle Co., Ltd., Beijing Institute of Technology, Shanghai Electric Drive Co., Ltd., China Automotive Technology Research Center, Tianjin Qingyuan
Electric Vehicle Co., Ltd., Chery Automobile Co., Ltd., Shanghai Motor
Vehicle Testing Center , Institute of Electrical Engineering of Chinese Academy of Sciences, Harbin Institute of Technology, Beijing Automotive New Energy Vehicle Co., Ltd., Shanghai Automotive Technology Co., Ltd.
China Automotive Engineering Research Institute Co., Ltd.
The main drafters of this standard. Guo Shijun, Guo Shuying, Wu Lixun,
Song Qiang, Zhang Qin, Guo Wei, Du Zhiming, Lin Weiyi, Fu Zhenxing, Cui Shumei, Wen Xuhui, Meng Xiangfeng, Li Yujun, Miu Wenquan, Luo
Yongping.
Failure classification and assessment of electrical
machine system for electric vehicle
1 Scope
This standard specifies the failure judgment principles, failure modes, and failure classification of the electrical machine system for electric vehicle. This standard applies to all types of electrical machine system for electric vehicle.
2 Normative references
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this Standard. GB/T 18488 (all parts) - The electrical machines and controllers for electric vehicles - Technical specification
GB/T 19596 Terminology of electric vehicles
3 Terms and definitions
The terms and definitions established in GB/T 19596, GB/T 18488 (all parts) and the terms in Appendix A apply to this standard.
4 Judgment principles of failure modes
4.1 In principle, it shall use the failure mode of the drive motor (hereinafter referred to as the motor), the components of the motor controller, and the wiring between them to describe the failure.
4.2 When it is difficult to use the failure mode of the components to describe the failure OR otherwise it cannot determine which component fails, it may use the failure mode of higher level component (until to the drive motor or motor controller) to conduct description.
Appendix A
(Normative)
Drive motor system failure mode
A.1 Damage failure mode
Damage failure modes mainly include.
- Fracture. Geometric surface separation with limited area. The location of failure includes controller shell, motor base, cover and so on.
- Fragmentation. The phenomenon of parts becoming many irregularly
shaped fragments. The location of failure includes bearings, rotor splines and so on.
- Cracks. Minor cracks on the surface or inside the component. The
location of failure includes controller shell, motor base, cover and so on. - Fractures. Visible cracks in welds, sheet metal parts, and non-metallic parts. The location of failure includes insulation board, wiring board, cable and so on.
- Pitting. Spot erosion on the surface of the component. The position of failure includes motor spline.
- Ablation. Damage to the surface of the component due to local melting. The location of failure includes circuit breaker.
- Breakdown. Damage due to electrical discharge caused by the loss of
insulation of the insulator. The location of failure includes motor windings, capacitors, power devices and so on.
- Deformation. the phenomenon of original shape change of components
under external force, such as the bending or torsional deformation of the motor shaft, and the deformation of the controller housing.
- Indentation. Crevice marks on the surface of the component, such as
indentations on the surface of the rotor splines.
- Burning. All or partial function failure due to operating temperature exceeding the allowable temperature of components for a certain period
- Gap deviation. The phenomenon that the function is affected by the
contact gap or fit clearance exceeding the specified value, such as the gap deviation of contactor, bearing, and so on.
- Interference. The phenomenon of collision or abnormal friction between moving parts, such as the interference between fan blades and wind
hood, speed sensor and tooth plate, motor stator and rotor, and so on.
- Performance offset. The instability of critical output, such as the
oscillation or instability of output torque and speed.
A.5 Blockage and leakage failure modes
Blockage and leakage failure modes mainly include.
- Blockage. The phenomenon that the fluid in the pipeline cannot flow OR flow smoothly, such as the pipeline of the liquid-cooled motor and
controller.
- Leakage. T...

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