GB/T 43332-2023 English PDF (GBT43332-2023)

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GB/T 43332-2023: Safety requirements of conductive charging and discharging for electric vehicles
GB/T 43332-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
CCS T 40
Safety Requirements of Conductive Charging and
Discharging for Electric Vehicles
(ISO 17409:2020, Electrically Propelled Road Vehicles - Conductive Power Transfer -
Safety Requirements, MOD)
ISSUED ON: NOVEMBER 27, 2023
IMPLEMENTED ON: NOVEMBER 27, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 4
Introduction ... 8
1 Scope ... 9
2 Normative References ... 9
3 Terms and Definitions ... 11
4 Requirements for Power Supply Plugs and Vehicle Socket-outlets ... 12
4.1 Requirements for Power Supply Plugs (connection mode A) ... 12
4.2 Requirements for Vehicle Socket-outlets ... 12
5 Requirements for Protection against Electric Shock ... 13
5.1 General Requirements ... 13
5.2 Basic Protection When Connected to External Electric Power Supply ... 13
5.3 Protective Conductor ... 13
5.4 Insulation Resistance ... 15
5.5 Requirements When Not Connected to External Electric Power Supply ... 15
5.6 Insulation Coordination ... 18
5.7 Touch Current When Connected to External Electric Power Supply ... 18
5.8 Residual Current Device (RCD) ... 18
6 Requirements for Thermal Accident Protection... 19
6.1 Requirements under Normal Operating Conditions ... 19
6.2 Overcurrent Protection ... 19
6.3 Arc Protection of DC Connection ... 21
6.4 Remaining Power after Disconnection ... 21
6.5 Instantaneous Overvoltage ... 22
7 Additional Requirements for AC Charging ... 22
7.1 Voltage and Frequency Ranges of Normal Operation ... 22
7.2 Current Characteristics... 22
7.3 Power Factor ... 23
7.4 Interlock Function of Vehicle Interface ... 24
7.5 Phase Sequence of Three-phase Charging ... 24
8 Additional Requirements for DC Charging ... 24
8.1 General Requirements ... 24
8.2 Breaking Device ... 25
8.3 Control Pilot Function ... 25
8.4 Vehicle Insulation Monitoring System ... 25
8.5 Locking of Vehicle Plug ... 25
8.6 Temperature of Contacts ... 25
8.7 Overvoltage of Load Dump ... 26
8.8 Compatibility of Insulation Monitoring System ... 26
9 Requirements for External Discharge ... 27
9.1 General Requirements ... 27
9.2 AC Discharge ... 27
9.3 DC Discharge ... 29
10 Requirements for Functional Safety ... 29
10.1 Vehicle Operation ... 29
10.2 Charging Operation ... 29
10.3 Electromagnetic Immunity ... 30
11 Requirements for Environmental Conditions ... 30
11.1 General Requirements ... 30
11.2 Protection Degree ... 30
11.3 Surface Temperature ... 31
11.4 Electromagnetic Disturbance ... 31
12 User Manual and Markings ... 31
12.1 User Manual ... 31
12.2 Markings ... 31
13 Test Methods ... 31
13.1 General Rules ... 31
13.2 Protective Conductor Resistance Test ... 32
13.3 Insulation Resistance Test ... 32
13.4 Withstand Voltage Test ... 33
13.5 Surge Current Test ... 35
13.6 Test of Touch Current ... 36
13.7 Test of DC Maximum Charging Current ... 41
13.8 DC Power Contact Overtemperature Test ... 42
Appendix A (informative) Comparison of Structural No. between This Document and
ISO 17409:2020 ... 44
Appendix B (informative) Measurement of Y Capacitance ... 45
B.1 General Rules ... 45
B.2 Test Devices ... 45
B.3 Test Procedures ... 47
Bibliography ... 49
Safety Requirements of Conductive Charging and
Discharging for Electric Vehicles
1 Scope
This document specifies the safety requirements for conductive charging and discharging of
electric vehicles (hereinafter referred to as “vehicles”) when they are conductively connected
to an external electric power supply or external load.
This document is applicable to vehicles whose socket-outlets (connection mode B and
connection mode C) comply with GB/T 20234.2 and / or GB/T 20234.3, and power supply
plugs (connection mode A) comply with GB/T 1002 and / or GB/T 20234.2.
This document is applicable to vehicles with power supply circuit of Class B voltage and can
be externally charged and discharged. Vehicles whose power supply circuit is Class A voltage
may take this document as a reference in the implementation.
This document is applicable to charging mode 2, charging mode 3 and charging mode 4 defined
in GB/T 18487.1-2023. For charging mode 4, this document is applicable to conductive
charging with an isolated off-board charger.
NOTE 1: this document does not provide the requirements for charging mode 1.
NOTE 2: the external electric power supply does not belong to the vehicle.
This document is applicable to the on-board part of the vehicle power supply circuit, and also
applies to the charging and discharging control function of the vehicles conductively connected
to an external electric power supply or external load.
This document does not apply to general safety precautions for manufacturing, maintenance
and repair personnel.
NOTE 3: for general safety requirements for the vehicles, see GB 18384.
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
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 1002 Single Phase Plugs and Socket-outlets for Household and Similar Purposes - Types,
Basic Parameters and Dimensions
diagram of Scheme 2)
5.3.3 All exposed conductive parts of components on the vehicle power supply circuit shall be
connected to the vehicle electric platform through protective conductors.
5.3.4 The cross-sectional area of the protective conductors shall be designed in accordance with
GB/T 16895.3.
5.3.5 The protective conductors of the vehicle power supply circuit shall be designed based on
relevant parameters (such as: fault current and breaking time), with consideration of the energy
sources of the vehicle itself and external electric power supply.
5.3.6 The connection resistance of the protective conductors between the protective conductor
contacts of the power supply plug (connection mode A) and the vehicle socket-outlet
(connection mode B and connection mode C), and the vehicle electric platform, as well as
between all exposed conductive parts on the vehicle power supply circuit, shall be less than 0.1
, and shall be applicable to all conduction paths that function as protective conductor
connections.
5.4 Insulation Resistance
5.4.1 AC connection
When the vehicle is not connected to an external electric power supply, the insulation resistance
of the vehicle power supply circuit shall be not less than 500 /V, and the measurement
reference voltage shall be the maximum working voltage of the vehicle power supply circuit.
5.4.2 DC connection
5.4.2.1 When the vehicle is not connected to an external electric power supply, the insulation
resistance of the on-board part of the vehicle power supply circuit shall comply with the
requirements of GB 18384.
5.4.2.2 When the vehicle is connected to an off-board charger, the total insulation resistance of
the vehicle power supply circuit shall be not less than 100 /V. The safety requirements when
the vehicle is connected to an external electric power supply shall comply with 8.1.
5.5 Requirements When ...