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GB/T 20234.3-2023 English PDF (GBT20234.3-2023)

GB/T 20234.3-2023 English PDF (GBT20234.3-2023)

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GB/T 20234.3-2023: Connection set for conductive charging of electric vehicles - Part 3: DC charging coupler

This Document specifies the general requirements, ratings, connection interface, contact arrangement, contact function, model, structural dimensions and other requirements for the DC charging coupler for conductive charging of electric vehicles. This Document applies to DC charging couplers with rated voltage not exceeding DC 1500V and rated current (continuous maximum operating current) not exceeding 800 A.
GB/T 20234.3-2023
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 43.040.99
CCS T 35
Replacing GB/T 20234.3-2015
Connection Set for Conductive Charging of Electric Vehicles
?€? Part 3: DC Charging Coupler
ISSUED ON: SEPTEMBER 7, 2023
IMPLEMENTED ON: SEPTEMBER 7, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the PEOPLE Republic of China.
Table of Contents
Foreword ... 3
Introduction ... 5
1 Scope ... 6
2 Normative References ... 6
3 Terms and Definitions ... 6
4 General Requirements ... 6
5 Ratings ... 7
6 Connection Functions ... 7
6.1 Connection interface and contact arrangement ... 7
6.2 Contact parameters and functions ... 8
6.3 Contact connection interface ... 9
6.4 Locking device ... 10
7 Structural Dimensions of Charging Coupler ... 10
7.1 General ... 10
7.2 Vehicle plug ... 10
7.3 Vehicle socket ... 12
8 Installation Examples of the Vehicle Socket ... 13
8.1 Front installation method... 13
8.2 Rear installation method... 14
8.3 Integrated structure ... 15
9 Space Dimension of the Vehicle Plug ... 16
10 Structural Example of Locking Device ... 17
Foreword
This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for Standardization ?€? Part 1: Rules for the Structure and Drafting of Standardizing Documents. This Document was Part 3 of GB/T 20234 Connection Set for Conductive Charging of Electric Vehicles. GB/T 20234 consists of the following parts:
--- Part 1: General requirements;
--- Part 2: AC charging coupler;
--- Part 3: DC charging coupler.
This Document replaced GB/T 20234.3-2015 Connection Set for Conductive Charing of Electric Vehicles ?€? Part 3: DC Charging Coupler. Compared with GB/T 20234.3-2015, the major technical changes of this Document are as follows besides the structural adjustments and editorial modifications:
a) Change the rated voltage and rated current of the DC charging interface (see Clause 1, Tables 1 and 2 of this Edition; Clause 1, Tables 1 and 2 of the 2015 Edition); b) Add requirements for locking devices (see 6.4 of this Edition);
c) Change the height dimensions of the vehicle socket CC2 plug bush (see 7.3 of this Edition; Appendix A of the 2015 Edition);
d) Added structural examples of locking devices (see Clause 10 of this Edition). Please note some contents of this Document may involve patents. The issuing agency of this Document shall not assume the responsibility to identify these patents. This Document was proposed by the Ministry of Industry and Information Technology of the PEOPLE 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: BYD Auto Industry Company Limited; China Automotive Technology and Research Center Co., Ltd.; China Association of Automobile Manufacturers; NIO Technology (Anhui) Co., Ltd.; Guangzhou Greater Bay Technology Co., Ltd.; Guangzhou Xiaopeng Motors Technology Co., Ltd.; China Automotive Research Institute New Energy Motor Inspection Center (Tianjin) Co., Ltd.; China FAW Co., Ltd.; GAC Ai?€?an New Energy Automobile Co., Ltd.; Dongfeng Motor Group Co., Ltd.; Contemporary Amperex Technology Co., Ltd.; Chongqing Changan New Energy Vehicle Co., Ltd.; Xi?€?an Linchr New Energy Technology Co., Ltd.; Shenzhen Busbar SCI-Tech Development Co., Ltd.; Beiqi Foton Connection Set for Conductive Charging of Electric Vehicles
?€? Part 3: DC Charging Coupler
1 Scope
This Document specifies the general requirements, ratings, connection interface, contact arrangement, contact function, model, structural dimensions and other requirements for the DC charging coupler for conductive charging of electric vehicles.
This Document applies to DC charging couplers with rated voltage not exceeding DC 1500V and rated current (continuous maximum operating current) not exceeding 800 A. 2 Normative References
The provisions in following documents become the essential provisions of this Document through reference in 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) is applicable to this Document.
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 29317 Terminology of electric vehicle charging/battery swap infrastructure 3 Terms and Definitions
For the purposes of this Document, the terms and definitions given in GB/T 19596, GB/T 20234.1 and GB/T 29317 apply.
4 General Requirements
4.1 The technical requirements and test methods of the DC charging coupler shall comply with the provisions of GB/T 20234.1.
4.2 The control guidance circuit and control principle applicable to the DC charging coupler Figure 3 -- Schematic Diagram of Contact Connection Interface
6.4 Locking device
6.4.1 The DC charging coupler shall have a mechanical locking device. The mechanical locking device shall be able to prevent accidental disconnection of the charging coupler during normal working conditions. The vehicle plug shall be equipped with a mechanical locking rod, mechanical lock head, pin and other mechanisms; and the vehicle socket shall be equipped with a mechanical locking notch that can match the mechanical lock head.
6.4.2 The vehicle plug should have an electronic locking device, and the electronic locking device should be able to lock and unlock the movement of the mechanical locking rod. The vehicle plug should have an emergency unlocking function, and should be able to unlock the mechanical locking lever when the electronic locking device is powered off or fails. 6.4.3 If the vehicle plug is used in an automatic charging connection device that cannot be directly plugged and unplugged manually, the vehicle plug does not need to have a locking device. The function of maintaining the charging interface during the power transmission process and preventing plugging and unplugging under load can be provided by the charging automatic connection device.
7 Structural Dimensions of Charging Coupler
7.1 General
The structural dimension of charging coupler products shall not exceed the scope specified in 7.2 and 7.3.
7.2 Vehicle plug
The structural dimension of the vehicle plug shall comply with the provisions in Figure 4.

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