GB/T 20234.3-2015 English PDF (GBT20234.3-2015)

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GB/T 20234.3-2015: [Replaced by GB/T 20234.3-2023] Connection set for conductive charging of electric vehicles -- Part 3: DC charging coupler
GB/T 20234.3-2015
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.99
T 35
Replacing GB/T 20234.3-2011
Connection Set for Conductive Charging of
Electric Vehicles - Part 3. DC Charging Coupler
ISSUED ON. DECEMBER 28, 2015
IMPLEMENTED ON. JANUARY 1, 2016
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative References ... 5 
3 Terminologies and Definitions ... 5 
4 General Requirements ... 5 
5 Rated Values of DC Charging Coupler ... 5 
6 Functions of Vehicle Coupler ... 6 
7 Dimensions ... 8 
Appendix A ... 9 
Appendix B ... 12 
Appendix C ... 13 
Foreword
GB/T 20234 “Connection Set of Conductive Charging for Electric Vehicles” consists of
3 parts.
- Part 1. General Requirements;
- Part 2. AC charging coupler;
- Part 3. DC charging coupler.
This Part is Part 3 of GB/T 20234.
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
This Part replaces "Connection Set for Conductive Charging of Electric Vehicles - Part
3. DC Charging Coupler" (GB/T 20234.3-2011). Compared with GB/T 20234.3-2011,
the main technical changes are as follows.
- The highest rated voltage of charging coupler was modified (see Chapter 1);
- 80A and 200A were added among the rated current values of charging coupler
(see Table 1);
- The coupling order of contacts in the charging connection process was adjusted,
and electronic locking device was added in the schematic diagram for connection
interface (see 6.3);
- The control pilot circuit and control principle of DC charging in charging mode 4
were deleted (see Appendix A of 2011 edition);
- Some dimensions of control pilot contact and mechanical lock of charging coupler
were modified (see Appendix A);
- The spatial size requirements of plug were modified and adjusted as a normative
appendix (see Appendix C).
This Part was proposed by the Ministry of Industry and Information Technology of the
People's Republic of China.
This Part shall be under the jurisdiction of the National Technical Committee on
Automobiles of Standardization Administration of China (SAC/TC 114).
Main drafting organizations of this Part. China Automotive Technology and Research
Center, State Grid Corporation of China and China National Electric Apparatus
Connection Set for Conductive Charging of Electric
Vehicles - Part 3. DC Charging Coupler
1 Scope
This Part of GB/T 20234 specifies the general requirements, function definitions, type
structures, parameters and dimensions of DC charging coupler for conductive charging
of electric vehicles.
This Part is applicable to vehicle coupler in charging mode 4 and connection mode C,
of which the rated voltage shall not exceed 1,000V (DC) and the rated current shall not
exceed 250A (DC).
2 Normative References
The following documents for the application of this document are essential. For dated
reference, only the dated edition applies to this document. For undated references, the
latest edition (including any amendments) applies to this document.
GB/T 18487.1 Electric Vehicle Conductive Charging System - Part 1. General
Requirements
GB/T 20234.1 Connection Set of Conductive Charging for Electric Vehicles -
Part 1. General Requirements
3 Terminologies and Definitions
For the purposes of this document, the terminologies and definitions defined in GB/T
20234.1 apply.
4 General Requirements
The technical requirements and test methods of DC charging coupler shall meet the
requirements of GB/T 20234.1.
5 Rated Values of DC Charging Coupler
The rated values of DC charging coupler are detailed in Table 1.
Table 1 Rated Values of DC Charging Coupler
Rated voltage
Rated current
6 Functions of Vehicle Coupler
6.1 Electrical parameter values and functions
9 pairs of contacts are respectively included in vehicle plug and vehicle socket, and
their electrical parameter values and function definitions are detailed in Table 2.
Table 2 Electrical Parameter Values and Function Definitions of Contacts
Contact No.
/identification Rated voltage and current Function definition
1-(DC+) 750V/1000V 80 A/125A /200A/250A
DC power supply positive, for connecting DC power supply
positive and battery anode
2-(DC-) 750V/1000V 80 A/125 A /200 A/250 A
DC power supply negative, for connecting DC power supply
negative and battery cathode
3-( ) -
Protective earthing (PE) , for connecting earth wire of power
supply equipment and electrical chassis of vehicle
4-(S+) 0V~30V 2A Charging communication CAN_H, i.e. the communication line connecting off-board charger and electric vehicle
5-(S-) 0V~30V 2A Charging communication CAN_L, i.e. the communication line connecting off-board charger and electric vehicle
6-(CC1) 0V~30V 2A Charging connection confirmation
7-(CC2) 0V~30V 2A Charging connection confirmation
8-(A+) 0V~30V 20A Low-voltage auxiliary power supply positive, being provided for electric vehicles by connecting off-board charger
9-(A-) 0V~30V 20A Low-voltage auxiliary power supply negative, being provided for electric vehicles by connecting off-board charger
6.2 Contact arrangement mode
The contact arrangement modes of vehicle plug and vehicle socket are as shown in
Figure 1 and Figure 2.