GB/T 18487.5-2024 Electric vehicle conductive charging system -
Part 5: DC charging system for GB/T 20234.3
1 Scope
This document specifies the general requirements, control pilot circuit, charging control process, charging connection control timing, insulation monitoring device, additional protective measures, power outage protection and other requirements for the DC electric vehicle charging system used for the DC charging interface specified in GB/T 20234.3.
This document is applicable to the DC charging system composed of electric vehicles (referred to as "vehicles") and off-board conductive chargers (referred to as "off-board chargers" or "chargers") that comply with the digital communication protocol GB/T 27930.2.
This document is applicable to off-board conductive chargers that use isolated systems, with a rated voltage on the power grid side not exceeding AC 1,000V or DC 1,500V, and a maximum operating voltage on the vehicle side not exceeding DC 1,500V.
Note 1: The recommended DC operating voltage range at the vehicle interface for off-board conductive chargers in non-restricted places is 200V to 1,000V.
This document is applicable to DC charging systems with class B voltage in the vehicle power supply circuit. For DC charging systems with class A voltage in the vehicle power supply circuit, this document may be taken as a reference.
Note 2: See GB 18384 for the definition of voltage level.
Note 3: When the DC charging system specified in this document is used in other fields such as electric industrial vehicles and electric engineering machinery, additional requirements are usually required for the charging system, such as re-evaluating important characteristics, including short-circuit protection, Y capacitance, insulation resistance, and insulation monitoring devices.
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 of the referenced document (including any amendments) applies.
GB/T 13870.1-2022 Effects of current on human beings and livestock - Part 1: General aspects
GB/T 13870.2-2016 Effects of current on human beings and livestock - Part 2: Special aspects
GB 14050 Types and safety technical requirements of system earthing
GB/T 14285 Technical code for relaying protection and security automatic equipment
GB/T 18487.1-2023 Electric vehicle conductive charging system - Part 1: General requirements
GB/T 19596 Terminology of electric vehicles
GB/T 20234.1-2023 Connection set for conductive charging of electric vehicles - Part 1: General requirements
GB/T 20234.3 Connection set for conductive charging of electric vehicles - Part 3: DC charging coupler
GB/T 27930.2 Digital communication protocols between off-board conductive charger and electric vehicle - Part 2: Communication protocols for GB/T 20234.3
GB/T 29317 Terminology of electric vehicle charging/battery swap infrastructure
GB/T 43332 Safety requirements of conductive charging and discharging for electric vehicles
DL/T 584 Setting guide for 3kV~110kV power system protection equipment
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 18487.1-2023, GB/T 19596, GB/T 20234.1-2023, and GB/T 29317 apply.
4 Classification
The classification of DC supply equipment shall meet the requirements of Clause 4 of GB/T 18487.1-2023.
5 General requirements for charging system
6 Telecommunication
Contents Foreword i Introduction ii 1 Scope 2 Normative references 3 Terms and definitions 4 Classification 5 General requirements for charging system 6 Telecommunication 7 Protection against electric shock 8 Connection between electric vehicles and supply equipment 9 Special requirements for vehicle interfaces 10 Structure and performance requirements for electric vehicle energy transfer equipment 11 Overload protection, short circuit protection, and emergency stop 12 Usage conditions, maintenance, marking, and instructions Annex A (Normative) DC charging control pilot circuit and control principle for GB/T 20234.3 Annex B (Normative) Downward compatible DC charging control pilot circuit and control principle in Annex A Bibliography
