GB 44263-2024 PDF English
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| GB 44263-2024 | English | 565 |
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Safety requirements for electric vehicle conductive charging system
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GB 44263-2024: Safety requirements for electric vehicle conductive charging system---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB44263-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.99
CCS T 35
Safety requirements for electric vehicle conductive charging
system
Issued on. JULY 24, 2024
Implemented on. AUGUST 01, 2025
Issued by. State Administration for Market Regulation;
National Standardization Administration.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 5
4 Symbols and abbreviations... 8
5 General requirements... 8
6 Charging interface safety... 9
7 AC charging safety... 10
8 DC charging safety... 13
9 Test methods... 19
10 Implementation of the standard... 37
Appendix A (Normative) DC charging control pilot circuit for GB/T 20234.3... 38
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
"Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents".
Please note that some contents of this document may involve patents. The issuing
agency of this document does not assume the responsibility for identifying patents.
This document was proposed by AND shall be under the jurisdiction of the Ministry of
Industry and Information Technology of the People's Republic of China and the
National Energy Administration (responsible according to the division of
responsibilities).
Safety requirements for electric vehicle conductive charging
system
1 Scope
This document specifies the requirements for the overall safety, charging interface
safety, AC charging safety, DC charging safety of electric vehicle conductive charging
systems; describes the corresponding test methods.
This document is applicable to electric vehicle AC charging systems and electric vehicle
DC charging systems, whose rated voltage on the power grid side does not exceed 1000
V (AC) or 1500 V (DC), and the rated maximum voltage on the electric vehicle side
does not exceed 1000 V (AC) or 1500 V (DC). It is also applicable to the safety
requirements for charging in electric vehicle’s charging and discharging systems.
This document does not apply to.
- Safety requirements related to the maintenance of electric vehicle’s conductive
charging/charging and discharging systems;
- Automatic charging systems such as top contact charging systems.
2 Normative references
The contents of the following documents constitute essential clauses of this document
through normative references in the text. For dated references, only the version
corresponding to that date applies to this document; for undated references, the latest
version (including all amendments) applies to this document.
GB 1002 Single phase plugs and socket-outlets for household and similar purposes
- Types, basic parameters and dimensions
GB/T 2099.1 Plugs and socket-outlets for household and similar purposes - Part 1.
General requirements
GB/T 4208-2017 Degrees of protection provided by enclosure (IP code)
GB/T 11918.1-2014 Plugs, socket-outlets and couplers for industrial purposes - Part
1.General requirements
GB/T 11918.2-2014 Plugs, socket-outlets and couplers for industrial purposes - Part
2.Dimensional compatibility and interchangeability requirements for pin and
contact-tube accessories
GB 18384 Electric vehicles safety requirements
GB/T 18487.1-2023 Electric vehicle conductive charging system - Part 1.General
requirements
GB/T 20234.1-2023 Connection set for conductive charging of electric vehicles -
Part 1.General requirements
3 Terms and definitions
The terms and definitions as defined in GB/T 18487.1-2023 and GB/T 20234.4, as well
as the following terms and definitions, apply to this document.
3.1
Electric vehicle conductive charging system
Electric vehicle charging system using conductive charging.
4 Symbols and abbreviations
4.1 Symbols
The following symbols apply to this document.
4.2 Abbreviations
The following abbreviations apply to this document.
5 General requirements
5.1 Conditions for use of electric vehicle charging mode
5.1.1 Mode 1 specified in 5.1 of GB/T 18487.1-2023 shall not be used to charge electric
vehicles.
5.1.2 When the power supply side uses a 10 A (AC) single-phase two-pole grounded
plug that complies with the requirements of GB/T 2099.1 and GB 1002, the output
current shall not exceed 8 A (AC).
5.2 Prerequisites for the implementation of this document
The prerequisite for the implementation of this document is that the power supply
equipment shall comply with the provisions of GB 39752 and the electric vehicle shall
comply with the provisions of GB 18384.
6 Charging interface safety
6.1 Charging interface protection level
The protection level of the charging interface against dangerous parts shall meet the
following requirements.
6.2 Charging interface temperature protection function
6.2.1 AC charging interface temperature protection function
The AC charging interface has the following temperature protection functions.
6.2.2 DC vehicle interface temperature protection function
The DC vehicle interface has the following temperature protection functions.
7 AC charging safety
7.1 System design safety
7.1.1 Control pilot circuit
The AC power supply system has a control pilot function.
7.1.2 Charging cable current carrying capacity detection function
Electric vehicles shall have the ability to confirm the rated capacity of the charging
cable, by monitoring whether the resistance value between testing point 3 and PE
complies with Table A.5 in GB/T 18487.1-2023.
7.1.3 Equipment power supply capacity declaration function
The AC power supply equipment shall be able to inform the electric vehicle of the
current power supply capacity, by setting the PWM signal duty cycle. The relationship
between the duty cycle generated by the AC power supply equipment and the charging
current limit shall comply with the requirements of Table A.2 in GB/T 18487.1-2023.
7.1.5 Contact sticking detection function
The AC power supply equipment shall have a contactor (or similar device) sticking
detection function. When the following contact sticking occurs, the AC power supply
equipment shall issue an alarm message at the end of shutdown.
7.1.6 Short circuit protection function
The AC power supply equipment shall have a short circuit protection function for the
AC output circuit.
7.2 Abnormal charging protection
7.2.4 Vehicle side CP circuit abnormality protection
During the energy transmission stage, the electric vehicle shall be able to periodically
monitor the PWM signal of testing point 2, to determine the connection status of the
vehicle interface. When the PWM signal is interrupted, the electric vehicle shall stop
charging and comply with the provisions of A.3.10.4 in GB/T 18487.1-2023.
7.2.5 Power supply network power failure protection
During the energy transmission stage, within 1 s after the power supply network is
powered off, the voltage value measured between the power lines of the output
terminals of the AC power supply equipment or between the power lines and the
protective grounding conductor shall be less than or equal to 30 V (AC) (effective value),
or the equivalent stored electrical energy shall be less than or equal to 0.2 J.
7.2.6 Output overcurrent protection
During the energy transmission stage, the AC power supply equipment shall
continuously detect the actual working current of the on-board charger, which shall not
exceed the maximum power supply current corresponding to the PWM signal of the
AC power supply equipment and the maximum carrying capacity of the power supply
equipment components (such as relays and cables).
8 DC charging safety
8.1 System design safety
8.1.1 Control pilot circuit
The DC power supply system has control pilot functions.
8.1.2 Short-circuit protection function
Electric vehicles and DC power supply equipment shall have short-circuit protection
function for the DC power supply circuit. When a short-circuit fault is detected in the
DC circuit, the DC power supply equipment shall trigger a fault shutdown and issue an
alarm signal.
8.1.3 Capacitive coupling
For DC power supply equipment with a rated output voltage not exceeding 500 V (DC),
the total capacitance between the DC output positive and negative poles and the ground
of each charging interface shall not be greater than 0.5 μF.
8.1.4 Discharge circuit
The DC power supply equipment shall be equipped with a discharge circuit. During the
insulation self-test stage or when charging is terminated, the DC power supply
equipment shall discharge the charging output voltage in time.
8.1.5 Insulation monitoring function
During the insulation self-check stage, the DC power supply equipment shall have the
function of insulation monitoring of the DC power supply circuit. During the energy
transmission stage, the DC charging system shall have the function of insulation
monitoring of the DC power supply circuit. The insulation monitoring function of the
DC power supply equipment shall be coordinated with the insulation monitoring
function of the electric vehicle.
8.1.6 Interface locking function
During the energy transmission stage, the vehicle interface shall have a locking device
to ensure the reliable connection between the vehicle plug and the vehicle socket, to
avoid accidental live disconnection between the DC power supply equipment and the
electric vehicle. The locking function shall comply with the provisions of 10.6.2 in
GB/T 18487.1-2023.
8.2 Charging abnormality protection
8.2.1 Communication timeout protection
During the charging process, when the communication message times out (including
communication line short circuit fault, circuit break fault, etc.), the electric vehicle and
the DC power supply equipment shall trigger a fault shutdown.
8.2.2 Vehicle-side CC1 circuit abnormality protection
For a DC charging system that uses a GB/T 20234.3 vehicle interface and whose control
pilot circuit complies with Appendix A, during the energy transmission stage, the
electric vehicle shall judge the connection status of the vehicle plug and the vehicle
socket by the voltage value of testing point 3 (CC1 circuit). When the vehicle interface
changes from fully connected to unreliable connection, the electric vehicle shall trigger
an emergency shutdown and disconnect the DC disconnect devices K5 and K6 within
300 ms.
8.2.8 Output overcurrent protection
During the energy transmission stage, when the DC power supply device detects that
the charging current at the vehicle interface exceeds the required value, it shall trigger
a fault shutdown or emergency shutdown; issue an alarm message. The vehicle interface
voltage shall drop below 60 V (DC) before the electronic lock is unlocked.
8.2.9 Load dump protection
During the energy transmission stage, the DC power supply equipment shall have the
ability to limit instantaneous voltage overshoot during load dump (such as load
shedding).
9 Test methods
9.1 Inspection rules
The product can only be judged to meet the requirements of this document, after all
safety items specified in Table 1 have passed the inspection and testing.
9.2 Test conditions
9.2.1 Test environment conditions
All tests are carried out under standard atmospheric conditions for measurement and
testing. During the test of each item, the test environment conditions shall be relatively
stable.
9.2.2 Test power supply conditions
The power supply conditions during the test are as follows.
9.2.3 Test instrument requirements
Unless otherwise specified, the instruments used in the test shall meet the following
requirements.
9.3 Test system
9.3.1 AC charging test system
The structure of the AC power supply equipment test system is shown in Figure 3.
Unless otherwise specified, the test system shall be connected during the test.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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