GB/T 37133-2018 in English

《GB/T 37133-2018电动汽车用高压大电流线束和连接器技术要求》由TC114（全国汽车标准化技术委员会）归口，TC114SC27（全国汽车标准化技术委员会电动车辆分会）执行，主管部门为工业和信息化部。

ChinaStandards.net is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.

This standard is developed in accordance with the rules given in GB/T 1.1-2009.

This standard was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.

This standard is under the jurisdiction of the National Technical Committee of Auto Standardization (SAC/TC 114).


Technical specifications of high duty cables and connectors for electric vehicles

1 Scope

This standard specifies the general requirements, electrical performance, physical performance, environmental adaptability, electromagnetic shielding effect, test methods and inspection rules for high-voltage connection systems consisting of high duty cables and connectors for electric vehicles.

This standard is applicable to high-voltage connection systems for electric vehicles that comply with Class B voltage specified in GB/T 18384.3-2015.

Note: refer to this standard for the part of the connection system used to conduct Class non-B voltage circuits.

This standard is not applicable to connection set of conductive charging for electric vehicles.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 4208 Degrees of protection provided by enclosure (IP code)
GB/T 5169.11-2017 Fire hazard testing for electric and electronic products - Part 11: Glowing/hot-wire based test methods - Glow-wire flammability test method for end-products (GWEPT)
GB/T 11918.1-2014 Plugs, socket-outlet and couplers for industrial purposes - Part 1: General requirements
GB/T 18384.3-2015 Electrically propelled road vehicles - Safety specifications - Part 3: Protection of persons against electric shock
GB/T 19596 Terminology of electric vehicles
GB/T 20234.1 Connection set for conductive charging of electric vehicles—Part 1:General requirements
GB/T 25085-2010 Road vehicles - 60V and 600V single-core cables
GB/T 25087-2010 Road vehicles - Round, screened and unscreened 60 V and 600 V multi-core sheathed cables
GB/T 28046. 3-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 3: Mechanical loads
GB/T 28046. 4-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 4: Climatic loads
GB/T 28046.5-2013 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 5: Chemical loads
GB/T 30038 Road vehicles - Degrees of electrical equipment protection (IP-code)

3 Terms and definitions

For the purposes of this document, the terms and definitions given in GB/T 18384.3-2015, GB 19596 and GB/T 20234.1 and the following apply.

3.1
high voltage cable
a combination of one or more high voltage cables used to conduct a Class B voltage circuit

3.2
high voltage connector
a component having one or more sets of conductor terminals for connection and separation functions between high voltage cables of electric vehicles, and between high voltage cables and high voltage components

3.3
high voltage connection system
a connecting device consisting of a high voltage cable and a high voltage connector and conducting a Class B voltage circuit between high voltage components of an electric vehicle

Note: high-voltage connection systems may also include auxiliary components such as bellows, heat-shrink tubing, fixtures, guard tubes (grooves).

4 General requirements

4.1 Appearance

4.1.1 The appearance of the high-voltage connection system shall be clearly and firmly marked with basic information about products.

4.1.2 The marking of the high-voltage connection system shall comply with the requirements of Clause 5 of GB/T 18384.3-2015.

4.1.3 The accessible surface of the high voltage connection system shall be free of burrs, flashes and similar sharp edges.

4.1.4 The high-voltage connection system shall be free of defects such as damage and deformation.

4.2 Structure

4.2.1 The basic protection of personnel against electric shock from the high-voltage connection system shall meet the requirements of Sub-clause 6.2 of GB/T 18384.3-2015.

4.2.2 When the connection is normal, the protection grade of the high-voltage connection system shall meet the IPXXD. If the high-voltage connection system can be manually disconnected without tools, the protection grade of each part of the non-connected high-voltage connection system shall meet IPXXB.

4.2.3 As for high-voltage connection system with high-voltage interlock function, the power terminal and signal/control terminal of the system shall meet the following conditions:

——when the high voltage connection system is connected, the power terminal is turned on first, and the signal/control terminal is turned on later;

——when the high voltage connection system is disconnected, the signal/control terminal is disconnected first, and the power terminal is disconnected later.

4.2.4 The connection position of the cable crimping, screw connection, welding, etc. of the high-voltage connection system shall be free of connection defects such as looseness and breakage.

4.2.5 If the high voltage connection system has a shielding layer, it shall have a groundable structure.

4.3 Working environment

4.3.1 The temperature of the working environment of the high-voltage connection system shall meet those specified in Table 1.

 
Table 1 Ambient temperature
Temperature gradinga Temperature scopeb Example of applicable location
T1 -40℃~+75℃ Other areas or locations except T2, T3
T2 -40℃~+105℃ Direct light position in the passenger compartment, heat dissipation position outside the cabin, etc.
T3 -40℃~+125℃ Near the engine, exhaust pipe or other heat source
a When the high-voltage connection system is connected to parts of different temperature environments, it shall meet the relevant requirements of the more severe temperature level.

b If the product is subject to thermal insulation in use position , the temperature scope can be negotiated.

4.3.2 The high-voltage connection system shall meet the working environment requirements of relative humidity of 5% to 95%.

4.3.3 The high-voltage connection system shall meet the vibration environment requirements of the connected high-voltage components.

4.4 Parts in the system

In high-voltage connection systems, some requirements for high-voltage connectors are given in Annex A, while some requirements for high-voltage cables are given in Annex B.

5 Electrical performance

5.1 Voltage resistance

The voltage of voltage resistance test shall be withstand between the conductors, between the conductor and the outer casing, between the conductor and the shielding layer in the high voltage connection system, without dielectric breakdown or arcing.

5.2 Insulation resistance

The insulation resistance between the conductors, between the conductor and the outer casing, and between the conductor and the shielding layer in the high voltage connection system shall not be less than 100 MΩ.

6 Physical performance

6.1 Temperature rise

When the high-voltage connection system is working normally, the temperature rise of each point of the system shall not exceed 55 K.

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 Electrical performance
6 Physical performance
7 Environmental adaptability
8 Electromagnetic shielding effect
9 Test methods
10 Inspection rules
Annex A (Normative) Some requirements for high-voltage connectors
Annex B (Normative) Some requirements for high-voltage cables
Annex C (Informative) Method for measuring electromagnetic shielding effect of high-voltage connection system
Bibliography