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GB/T 20234.3-2023 PDF in English

GB/T 20234.3-2023 (GB/T20234.3-2023, GBT 20234.3-2023, GBT20234.3-2023)
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GB/T 20234.3-2023: PDF in English (GBT 20234.3-2023)

GB/T 20234.3-2023
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 by: State Administration for Market Regulation;
Standardization Administration of the People’s 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
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’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: 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
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.
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.