GB/T 42284.3-2022Road vehicles - Environmental conditions and testing for electrical and electronic equipment for drive system of electric propulsion vehicles - Part 3: Mechanical loads (English PDF)

Foreword

This document was issued on 30 December 2022 by the State Administration for Market Regulation; Standardization Administration of the PRC and takes effect on 1 July 2023.

It is a GB/T standard: recommended rather than compulsory, but it is the text a Chinese reviewer applies when assessing a submission.

This document was drafted in accordance with the rules provided in GB/T 1.1-2020

Directives for standardization - Part 1.Rules for the structure and drafting of

standardizing documents.

This document is Part 3 of GB/T 42284 Road vehicles - Environmental conditions and

testing for electrical and electronic equipment for drive system of electric propulsion

vehicles. The following parts have been issued for GB/T 42284.

-- Part 1.General;

-- Part 3.Mechanical loads;

-- Part 4.Climatic loads;

-- Part 5.Chemical loads.

This document adopts ISO 19453-3.2018 Road vehicles - Environmental conditions

and testing for electrical and electronic equipment for drive system of electric

propulsion vehicles - Part 3.Mechanical loads by modification.

Compared with ISO 19453-3.2018, this document makes the following structural

adjustments.

-- Delete Clause 6 of ISO 19453-3.2018.

The technical differences - between this document and ISO 19453-3.2018 - and the

reasons are as follows.

-- Remove the ISO and IEC database addresses for standardized maintenance terms,

since the terms involved in this document have nothing to do with the ISO and

IEC databases for standardized maintenance terms;

-- Add ISO 20567-1.2017 to the normative references (see 4.5.2);

-- Replace IEC 60068-2-27 (see 4.2.1.2) with the normative reference GB/T 2423.5,

between which the degree of consistency is identical, to adapt to the technical

conditions in China and improve operability;

-- Replace IEC 60068-2-31 (see 4.3.2) with the normative reference GB/T 2423.7,

between which the degree of consistency is identical, to adapt to the technical

conditions in China and improve operability;

-- Replace IEC 60068-2-14 (see 4.1.1) with the normative reference GB/T 2423.22,

between which the degree of consistency is identical, to adapt to the technical

conditions in China and improve operability;

-- Replace IEC 60068-2-64 (see 4.1.1, 4.1.2) with the normative reference GB/T

2423.56, between which the degree of consistency is identical, to adapt to the

technical conditions in China and improve operability;

-- Replace IEC 60068-2-80 (see 4.1.2) with the normative reference GB/T 2423.58,

between which the degree of consistency is identical, to adapt to the technical

conditions in China and improve operability;

-- Replace ISO 16750-1 (see Clause 3) with the normative reference GB/T 28046.1;

the degree of consistency between the two documents is modified, to adapt to the

technical conditions in China and improve operability;

-- Replace ISO 19453-1 (see Clause 3) with the normative reference GB/T 42284.1,

between which the degree of consistency is modified, to adapt to the technical

conditions in China and improve operability;

-- Replace ISO 19453-4 (see 4.1.1) with the normative reference GB/T 42284.4,

between which the degree of consistency is modified, to adapt to the technical

conditions in China and improve operability;

-- Add a test method for gravel bombardment (see 4.5.2).

This document also makes the following editorial modifications.

-- Change, in A.4.1.2, the value substituted into T1 from 60 to 600, when the

calculation is based on the Basquin model, known as a theoretical method, to

accelerate fatigue tests with equivalent damage, because it is printed incorrectly

in the original document;

-- Change 1.10 above the sum in the first column of Table A.16 to 1.15, because it is

printed incorrectly in the original document.

Please note that some of the contents of this document may involve patents. The issuing

organization of this document is not responsible for identifying patents.

This document was proposed by the Ministry of Industry and Information Technology

of the People’s Republic of China.

This document shall be under the jurisdiction of National Technical Committee of Auto

Standardization (SAC/TC 114).

Drafting organizations of this document. China Automotive Technology and Research

Center Co., Ltd., Contemporary Amperex Technology Co. Limited, CVC Certification

& Testing Co., Ltd., BAIC Motor Corporation., Ltd., Beijing National New Energy

Vehicle Technology Innovation Center Co., Ltd., Henan Tianhai Electric Co., Ltd.,

Waltek Testing Group Co., Ltd., SAIC-GM-Wuling Automobile Co., Ltd., Chongqing

Changan Automobile Co., Ltd., Beijing Chehejia Automobile Technology Co., Ltd.,

CRRC Times Electric Vehicle Co., Ltd., Honda Motor (China) Investment Co., Ltd.,

SAIC Volkswagen Automotive Co., Ltd., Shanghai Electrical Apparatus Research

Institute, Chery New Energy Automobile Co., Ltd., Guangzhou Automobile Group Co.,

Ltd.

Main drafters of this document. Ma Wenkai, Jin Xiuying, Wen Qinghao, Li Zheng, Li

Nijuan, Zhang Peng, Zhang Hui, Hua Yang, Xu Dian, Wu Huan, Luo Wenqing, Li

Jinjing, Liu Qiang, Peng Zaiwu, Li Yifan, Tong Wanqing, Wang Changjun, Sha Wenhan,

Chen Wenqing.

1 Scope

GB/T 42284.3-2022 covers the mechanical loads that electric drive equipment must survive. The components concerned — the traction inverter, the motor controller, the DC-DC converter, the battery management electronics — operate at voltage class B, the high-voltage domain of an electric vehicle, and they live in a harsh mechanical environment: bolted to the powertrain or the body, they take road-induced vibration for the vehicle's whole life, shocks from potholes and kerbs, and in an accident the loads that decide whether high voltage stays contained. Electric drivetrains also introduce vibration of their own, at frequencies a combustion powertrain never produced, from switching converters and from motors turning far faster than an engine. A component that passes an electrical qualification and then cracks a solder joint after two years of vibration has failed just as completely. This part specifies the mechanical load requirements and the corresponding tests for electrical and electronic equipment in electric propulsion drive systems at voltage class B. Under ICS 43.040.10 and CCS T36, it is written for electric drivetrain component suppliers, vehicle manufacturers and testing laboratories.

This document specifies requirements for the electric propulsion systems and

components with maximum working voltages according to voltage class B. This

document describes the potential environmental stresses and specifies requirements

recommended for mechanical loads under different stress levels on/in the vehicle.

2 Normative references

The following documents are referred to in the text in such a way that some or all of

their content constitutes requirements of this document. For dated references, only the

version corresponding to that date is applicable to this document; for undated references,

the latest version (including all amendments) is applicable to this document.

GB/T 2423.5, Environmental testing - Part 2.Test methods - Test Ea and guidance.

Shock (GB/T 2423.5-2019, IEC 60068-2-27.2008, IDT)

3 Terms and definitions

For the purposes of this document, the terms and definitions given in GB/T 28046.1

and GB/T 42284.1 apply.

4 Tests and requirements

During the vibration test, subject the DUT to the temperature cycle in accordance with

GB/T 2423.22, with electric operation according to Figure 1.Alternatively, a test at

constant temperature may be agreed on.

5 Code letters for mechanical loads

For code letters for mechanical loads, see Table 8.Recommended mechanical

requirements for the DUT depending on the mounting location are given in Annex B

(Table B.1).

Annex B (Informative) Recommended mechanical requirements for equipment

depending on the mounting location... 52

Bibliography... 54

Annex A

(Informative)

Guidelines for the development of test profiles for vibration tests

The aim of these guidelines is to make sure that the user of this document is able to

develop test profiles from vibration measurements in a reproducible way thus avoiding

errors.

Annex B

(Informative)

Recommended mechanical requirements for equipment depending on the

mounting location

......