GB/T 18487.5-2024 English PDF (GBT18487.5-2024)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click GB/T 18487.5-2024
Historical versions: GB/T 18487.5-2024
Preview True-PDF (Reload/Scroll if blank)

GB/T 18487.5-2024: [This is a DRAFT. GB/T 18487.5-202X, PLAN20241702-T-339-2024] Electric vehicle conductive charging system - Part 5: DC charging system for GB/T 20234.3
PLAN20241702-T-339-2024/ GB/T 18487.5-202X (GB/T 18487.5-2024 DRAFT)
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.120
CCS T 35
GB/T 18487.5-202X
Electric Vehicle Conductive Charging System - Part 5: DC
Charging System for GB/T 20234.3
系统
(DRAFT for comments. PLAN20241702-T-339-2024)
When submitting feedback, please include the relevant patents that you are
aware of, along with supporting documentation.
ISSUED ON: XX XX, XXXX
IMPLEMENTED ON: XX XX, XXXX
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Classification ... 5
5 General Requirements for Charging System ... 6
5.1 Usage Conditions of Charge Mode ... 6
5.2 Functions Provided by Mode 4 ... 6
6 Communication ... 7
7 Protection against Electric Shock ... 7
8 Connection between Electric Vehicles and Power Supply Equipment ... 7
8.1 General Requirements ... 7
8.2 Functional Description of Vehicle Couplers ... 8
9 Special Requirements for Vehicle Couplers ... 8
10 Structural and Performance Requirements for Electric Vehicle Power Transmission
Equipment ... 8
11 Overload Protection, Short-circuit Protection and Emergency Stop ... 9
12 Conditions of Use, Maintenance, Markings and Instructions ... 9
Appendix A (normative) DC Charging Control Guidance Circuit and Control Principle
for GB/T 20234.3 ... 10
A.1 General ... 10
A.2 Charging Control Guidance Circuit ... 10
A.3 Charging Control Process ... 14
A.4 Controlled Time Sequence of Charging Connection ... 40
A.5 Other Requirements for Charging System ... 57
Appendix B (normative) Downward Compatible DC Charging Control Guidance
Circuit and Control Principle in Appendix A ... 70
B.1 General ... 70
B.2 Compatibility of Electric Vehicles Complying with Appendix A with Older Version
Chargers ... 70
B.3 Compatibility of Chargers Complying with Appendix A with Older Version Electric
Vehicles ... 83
Bibliography ... 95
Electric Vehicle Conductive Charging System - Part 5: DC
Charging System for GB/T 20234.3
1 Scope
This document specifies the general requirements, control guidance circuits, charging control
process and charging connection control sequence of electric vehicle DC charging systems used
for the DC charging couplers in GB/T 20234.3, as well as other requirements for the charging
system, such as: insulation monitoring device, additional protective measures and power outage
protection, etc.
This document is applicable to electric vehicles (which may be referred to as vehicles) and off-
board conductive chargers (which may be referred to as off-board chargers or chargers) whose
DC charging couplers comply with GB/T 20234.3.
This document is applicable to DC charging system whose digital communication protocol
complies with GB/T 27930.2.
This document is applicable to off-board conductive chargers using an isolated system, the rated
voltage on the power supply grid side does not exceed AC 1,000 V or DC 1,500 V, and the rated
voltage on the vehicle side does not exceed DC 1,500 V.
NOTE 1: the recommended DC working voltage at the vehicle coupler for off-board conductive
chargers in non-restricted places is 200 V ~ 1,000 V.
This document is applicable to DC charging system whose charging power supply circuit is
Class B voltage. The DC charging system whose charging power supply circuit is Class A
voltage may take it as a reference.
NOTE 2: for the definition of voltage class, see GB 18384.
When the DC charging system specified in this document is used in fields other than electric
vehicles, such as: industrial vehicles and construction machinery, etc., the charging system may
require additional requirements.
NOTE 3: important features of the charging system, such as: short-circuit protection, Y capacitance,
insulation resistance and insulation monitoring device, etc. need to be re-evaluated.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
5 General Requirements for Charging System
5.1 Usage Conditions of Charge Mode
5.1.1 Mode 4 is used when an electric vehicle is connected to DC power supply equipment. It
applies to DC power supply equipment that is permanently connected to the power supply grid,
or DC power supply equipment that is connected to the power supply grid through a standard
plug cable assembly or through an AC charging coupler.
5.1.2 Mode 4 (including V2G) allows direct connection to AC or DC power supply grid.
5.1.3 Connection mode C, connection mode D and connection mode E are applicable to Mode
4. Only connection mode C is applicable to V2G.
5.1.4 The DC charging control guidance circuit and control principle of Mode 4 shall comply
with the provisions of Appendix A. The control guidance circuit in Appendix A has the
capability of downward compatibility (compatible with older versions). When the control
interaction process meets the conditions of A.3.2.7, it will jump to the downward compatible
charging system. The downward compatible DC charging control interaction process shall
comply with the provisions of Appendix B.
5.2 Functions Provided by Mode 4
5.2.1 In addition to the functional requirements in 5.2.2 ~ 5.2.6, the functions provided by Mode
4 shall comply with the relevant requirements of GB/T 18487.1.
5.2.2 The continuous monitoring of the continuity of the protective earthing conductor shall
comply with the requirements of A.3.10.3.2.1.
5.2.3 Due to limitations in power supply capability, the power supply equipment may adjust its
currently available maximum current value. If the actual output current monitored during the
energy transmission stage is higher than the currently available maximum current value, the
power supply equipment shall cut off the power supply circuit and shall comply with the
requirements of A.3.10.2.2.1.
5.2.4 After sleeping, the electric vehicle controller shall be able to be woken up. The vehicle
wake-up requirements are as per A.3.2.3 and A.3.5.4.
5.2.5 The vehicle may be equipped with voltage adaptive switching function, and the voltage
adaptive switching function shall comply with the requirements of A.5.12.
5.2.6 Electric vehicles may discharge the power supply grid through charging and discharging
equipment, and the discharge mode shall comply with the relevant requirements of this
document. The requirements for V2G DC charging and discharging function are as per
Appendix A.
6 Communication
Digital communication shall be adopted to realize data interaction between electric vehicles and
DC power supply equipment. The communication protocol shall comply with the provisions of
GB/T 27930.2.
7 Protection against Electric Shock
7.1.1 In addition to the requirements of 7.1.2 ~ 7.1.5, the general requirements for protection
against electric shock, basic protection, fault protection, stored energy, and safety requirements
for signal circuits between electric vehicles and DC power supply equipment shall respectively
comply with the relevant requirements for DC charging system in Mode 4 in GB/T 18487.1.
7.1.2 The minimum cross-sectional area of prot...