GB/T 42284.4-2022Road vehicles - Environmental conditions and testing for electrical and electronic equipment for drive system of electric propulsion vehicles - Part 4: Climatic 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 4 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 19453-4.2018 Road vehicles - Environmental conditions

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

propulsion vehicles - Part 4.Climatic loads by modification.

Compared with ISO 19453-4.2018, this document makes the following structural

adjustments.

-- Delete Clause 8 of ISO 19453-4.2018.

The technical differences between this document and ISO 19453-4.2018, 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;

-- Replace IEC 60068-2-1 (see 5.1.1.1.2) with the normative reference GB/T 2423.1,

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

conditions in China and improve operability;

-- Replace IEC 60068-2-2 (see 5.1.2.1.2, 5.1.2.2.2) with the normative reference

GB/T 2423.2, between which the degree of consistency is identical, to adapt to

the technical conditions in China and improve operability;

-- Replace IEC 60068-2-78 (see 5.6.2) with the normative reference GB/T 2423.3,

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

conditions in China and improve operability;

-- Replace IEC 60068-2-30 (see 5.5.2) with the normative reference GB/T 2423.4,

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

conditions in China and improve operability;

-- Replace IEC 60068-2-11 (see 5.4.2.2) with the normative reference GB/T 2423.17,

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

conditions in China and improve operability;

-- Replace IEC 60068-2-52 (see 5.4.3.2.1) with the normative reference GB/T

2423.18, 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 5.2.1.2) 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 60068-2-60 (see 5.8.2) with the normative reference GB/T 2423.51,

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

conditions in China and improve operability;

-- Replace IEC 60664-1 (see 5.11.2) with the normative reference GB/T 16935.1,

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 20653 (see 5.10.2) with the normative reference GB/T30038,

between which the degree of consistency 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;

-- Add the applicable conditions for cold water shock tests (see 5.3.1);

-- Adjust the substitution relationship between the salt spray combined test and the

other two salt spray tests in 5.4.3.1 and Table 9 in Clause 6.For unsealed

systems/components that will cause electrical failure due to salt water entering

the DUT, the salt spray combined test can only be used to substitute the test of

5.4.1.

This following editorial modifications are also made to this document.

-- Change “IP5K0” and “IP5K” in Table A.1 of Annex A to “IP5KX”. The waterproof

grade of this part can be determined through negotiation between the supplier and

the customer.

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., Beijing National New Energy Vehicle Technology Innovation Center

Co., Ltd., Henan Tianhai Electric Co., Ltd., Beijing Electric Vehicle Co., Ltd.,

Contemporary Amperex Technology Co. Limited, CVC Certification & Testing Co.,

Ltd., Waltek Testing Group Co., Ltd., China National Heavy Duty Truck Group Co.,

Ltd., China FAW Group Corporation, Dongfeng Liuzhou Motor Co., Ltd., Huawei

Technologies Co., Ltd., Dongfeng Automobile Co., Ltd. Dongfeng Nissan Passenger

Vehicle Company, Pan Asia Technical Automotive Center Co., Ltd., Xuzhou Xugong

Automobile Manufacturing Co., Ltd., Bosch Automotive Products (Suzhou) Co., Ltd.

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

Zheng Guangzhou, Xu Dian, Liu Xiuling, Chen Ying, Shen Liji, Wu Huan, Song

Yinghua, Wang Bojun, Xiong Yu, Wei Min, Jiang Zhi, Zhou Xiaozhen, Xu Feng, Ji

Xiaogang.

1 Scope

GB/T 42284.4-2022 covers the climatic side of qualifying electric drive equipment, where Part 3 covered the mechanical. The loads are temperature, humidity, thermal shock, salt and the corrosive atmospheres a vehicle meets, and for high-voltage equipment they matter more than they do for ordinary automotive electronics. The reason is insulation: at voltage class B the clearances and creepage distances that keep the high-voltage system isolated are the safety barrier, and humidity, condensation and salt contamination degrade exactly that. A cold start after a humid night can leave condensation on a busbar; road salt finds its way into an underbody enclosure over a winter. Temperature also drives the failure mechanism that ends most power electronics: repeated expansion and contraction fatigues the solder and the bond wires under the switching devices, so the number of thermal cycles matters as much as the extremes. This part specifies the climatic 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 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 different stress levels on/in the vehicle. This document contains

definitions, mounting location, operating mode and other general requirements.

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 2421-2020, Environmental testing - General and guidance (IEC 60068-1.2013,

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 Operating temperature ranges

The applicable temperature ranges are specified in Table 1.Choose the applicable

temperature range from Table 1 to be presented in the specifications of the device under

test (DUT).

5 Tests and requirements

The purpose of the test is to make sure that the DUT maintains the function even after

storage at low temperature.

This test simulates the exposure of the DUT to high temperatures without electrical

operation, e.g., during the shipment of the system/component. The failure mode is

insufficient heat resistance, e.g., warping of plastic housings.

6 Code for climatic loads

See Table 9 for code for climatic loads.

7 Protection against dust and water

Check the DUT in accordance with GB/T 30038.Recommended IP classes are given in

Annex C (Informative) Insulation tests... 42

C.1 General... 42

C.2 Withstand voltage... 42

C.3 Insulation resistance... 43

Bibliography... 45

Annex A.

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