GB/T 20234.4-2023 Connection set of conductive charging for electric vehicles-Part 4: High power DC charging coupler
1 Scope
This document specifies the composition and function, interface and parameters, cable requirements, thermal management system, technical requirements, test methods, etc. of the connection set of conductive charging for electric vehicles, as well as the technical requirements, test methods and inspection rules, etc. of adapters.
This document applies to the connection set of conductive charging for electric vehicles, with rated voltage not exceeding 1500V DC and rated current not exceeding 800A DC. This document applies to the adapters of vehicle connector in GB/T 20234.3 and vehicle socket in this document, with rated voltage not exceeding 1500V DC.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 1804-2000 General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications
GB/T 2951.11-2008 Common test methods for insulating and sheathing materials of electric and optical cables - Part 11: Methods for general application - Measurement of thickness and overall dimensions - Tests for determining the mechanical properties
GB/T 3956-2008 Conductors of insulated cables
GB/T 4208 Degrees of protection provided by enclosure (IP code)
GB/T 11918.1-2014 Plugs, socket-outlet and couplers for industrial purposes - Part 1: General requirements
GB/T 11918.4-2014 Plugs, socket-outlets and couplers for industrial purposes - Part 4: Switched socket-outlets and connectors with or without interlock
GB/T 18487.1-2023 Types and basic parameters of heat exchangers - Part 6:Air cooled heat exchanger
GB/T 20234.1-2023 Connection set for conductive charging of electric vehicles - Part 1: General requirements
GB/T 29317 Terminology of electric vehicle charging/battery swap infrastructure
GB/T 33594-2017 Charging cables for electric vehicles
Catalogue of hazardous chemicals (2015) www.chinasafety.gov.cn.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 11918.1-2014, GB/T 18487.1 and GB/T 29317 and the following apply.
3.1
charging connection accessory
accessory connecting electric vehicle to an the power supply equipment of the electric vehicle
Note: It consists of charging cable, vehicle connector, vehicle inlet, cap and other parts.
3.2
vehicle adapter
assembly unit used for interface conversion between vehicle connectors and vehicle inlets that comply with different standards
Note: it consists of control steering circuit, detection circuit, additional functions, etc., and is referred to as adapter.
3.2.1
general adapter
adapter having connection function and control steering circuit
3.2.2
advanced adapter
adapter having connection function and control steering circuit as well as temperature monitoring and communication functions
3.2.3
inlet-interface
interface on adapter that matches with vehicle inlet
Note: it is referred to as inlet interface.
3.2.4
adapter connector
part on adapter that matches with vehicle inlet
3.2.5
connector-interface
interface on adapter that matches with vehicle connector
Note: it is referred to as connector interface.
3.2.6
adapter inlet
part on adapter that matches with vehicle connector
3.2.7
proto interface
opposite interface that connects the adapter interface
3.2.8
adapter cable
cable in the adapter for connecting vehicle interface and connector-interface
3.2.9
type A adapter
adapter that physically consists of adapter connector and adapter inlet only, see Figure 1 for the schematic diagram.
Key
D——vehicle connector
E—— adapter inlet
F——adapter connector
G——vehicle inlet
Figure 1 Schematic diagram of Type A adapter
3.2.10
type B adapter
adapter that physically consists of adapter connector, adapter inlet and adapter cable, see Figure 2 for the schematic diagram.
Key
D——vehicle connector
E—— adapter inlet
F——adapter connector
G——vehicle inlet
Figure 2 Schematic diagram of Type B adapter
3.2.11
type C adapter
adapter that physically consists of adapter connector, adapter inlet and adapter cable, and the adapter inlet is fixed, see Figure 3 for the schematic diagram.
Key
D——vehicle connector
E—— adapter inlet
F——adapter connector
G——vehicle inlet
Figure 3 Schematic diagram of Type C adapter
3.3
rated current
maximum current at which the charging connection accessory can operate continuously under normal operating conditions.
Note: for charging connection accessory with active cooling function, its normal operating condition is when the cooling system is ON.
3.4
maximum current in non-cooling condition
maximum current which allows continuous operation when the cooling system is OFF for charging connection accessory with active cooling function
3.5
thermal sensing
method used to acquire the temperature data of charging connection accessory or its parts
3.6
thermal sensing device
device used to acquire the temperature data of charging connection accessory or its parts
3.7
temperature intervention value
temperature protection value of the internal temperature sensor of the charging connection assembly, which is used to prevent the temperature of the terminal contact area from exceeding the set value
3.8
temperature rise gradient intervention value
temperature rise rate protection value of the internal temperature sensor of the charging connection assembly, which is used to prevent the temperature rise rate of the terminal contact area from exceeding the set value
3.9
thermal transport
method used for active cooling of charging connection assembly, other than changing the current
3.10
thermal transport device
device used for active cooling of charging connection assembly
3.11
thermal exchange
method used for cooling and dissipating the heat from thermal transport
3.12
thermal exchange device
device used for cooling and dissipating the heat from thermal transport
3.13
thermal stabilization
condition that the temperature values measured at intervals of 10 minutes for three consecutive times do not vary beyond 2 K during temperature rise test
3.14
thermal management system
system for adjusting temperature by means of combining thermal sensing, thermal transport and thermal exchange
3.15
coolant
low temperature fluid, which is used to cool another high temperature object by means of thermal exchange
3.16
rated pressure
maximum pressure for the cable assembly provided by the manufacturer to operate continuously and normally at rated conditions
3.17
maximum allowed pressure
maximum pressure that the cable assembly provided by the manufacturer can bear in short time at rated conditions, the value shall not be less than the rated pressure
Foreword i
Introduction ii
1 Scope
2 Normative references
3 Terms and definitions
4 Composition and functions
5 Coupler interface and parameters
6 Requirements for cables
7 Thermal management system
8 Technical requirements
9 Test methods
10 Adapters
11 Marking
Annex A (Normative) Structural sizes of conductive high power DC charging coupler for electric vehicles
Annex B (Normative) Requirements for space sizes of vehicle connector for electric vehicles
Annex C (Informative) Example of the installation size of combined vehicle inlets for electric vehicles
Annex D (Normative) Structural sizes of conductive high power DC charging adapter for electric vehicles
Annex E (Informative) Temperature monitoring principle of conductive high-power DC charging adapter for electric vehicles
Annex F (Normative) Methods for testing temperature rise of cable assembly, vehicle inlet and vehicle adapter for electric vehicles
Annex G (Informative) Test method of locking device
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