GB/T 29318-2024 Electric energy metering for off-board charger of electric vehicleElectric energy metering for off-board charger of electric vehicle
1 Scope
This document specifies the technical requirements, test methods and inspection rules for the DC electric energy metering between the off-board charger of electric vehicles and the electric vehicles.
This document is applicable to the design, manufacture, acceptance and use of the electric energy metering for the whole public off-board charger (hereinafter referred to as the "charger"). It may serve as a reference for other types of chargers.
2 Normative references
The following normative documents contain provisions 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 2423.1 Environmental testing for electric and electronic products - Part 2: Test methods - Tests A: Cold
GB/T 2423.2 Environmental testing for electric and electronic products - Part 2: Test methods - Tests B: Dry heat
GB/T 2423.4 Environmental testing for electric and electronic products - Part 2: Test method - Test Db: Damp heat, cyclic (12h+12h cycle)
GB/T 18487.1-2023 Electric vehicle conductive charging system - Part 1: General requirements
GB/T 18487.2-2017 Electric vehicle conductive charging system - Part 2: EMC requirements for off-board electric vehicle supply equipment
GB/T 29317 Terminology of electric vehicle charging/battery swap infrastructure
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 29317 and the following apply.
3.1
public off-board charger
off-board chargers used to provide public services and carry out electric energy transactions
3.2
total charging energy
total charging electric energy recorded by the charger in its working state from the first charge
3.3
rate amount
amount obtained by multiplying the electric energy output by the charger in the corresponding time period in its working state by the rate
3.4
additional amount
expenses other than the rate amount recorded by the charger in its working state
Note: Such as parking fees, etc.
3.5
billable amount
sum of the rate amount and the additional amount recorded by the charger in its working state, which is used for settlement with the user
3.6
total billable amount
sum of the billable amount recorded by the charger in its working state from the first charge
3.7
measuring module
electric energy meter installed inside the charger for electric energy metering and external matching sensor device or integrated electric energy metering device with sensor device
3.8
maximum voltage
Umax
maximum voltage value at which the charger can output under rated operating conditions and can meter electric energy
3.9
minimum voltage
Umin
minimum voltage value at which the charger can output under rated operating conditions and can meter electric energy
3.10
maximum current
Imax
maximum current value at which the charger can output under rated operating conditions and can meter electric energy
3.11
minimum current
Imin
minimum current value at which the charger can output under rated operating conditions and can meter electric energy
4 Technical requirements
4.1 Interface for metering
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
4.1 Interface for metering
4.2 Function
4.3 Complete machine requirements
4.4 Measuring module requirements
5 Test methods
5.1 Test reference conditions
5.2 Check of metering interface and nameplate
5.3 Function check
5.4 Accuracy test
5.5 Impulse constant test
5.6 Error variation test
5.7 Clock time error test
5.8 Climate and environmental influence test
6 Inspection rules
6.1 Inspection classification
6.2 Inspection items
6.3 Acceptance judgment
Annex A (Informative) Schematic diagram for calibration method
A.1 Actual load calibration method
A.2 Phantom load calibration method
Annex B (Normative) Inspection items
GB/T 29318-2024 Electric energy metering for off-board charger of electric vehicleElectric energy metering for off-board charger of electric vehicle
1 Scope
This document specifies the technical requirements, test methods and inspection rules for the DC electric energy metering between the off-board charger of electric vehicles and the electric vehicles.
This document is applicable to the design, manufacture, acceptance and use of the electric energy metering for the whole public off-board charger (hereinafter referred to as the "charger"). It may serve as a reference for other types of chargers.
2 Normative references
The following normative documents contain provisions 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 2423.1 Environmental testing for electric and electronic products - Part 2: Test methods - Tests A: Cold
GB/T 2423.2 Environmental testing for electric and electronic products - Part 2: Test methods - Tests B: Dry heat
GB/T 2423.4 Environmental testing for electric and electronic products - Part 2: Test method - Test Db: Damp heat, cyclic (12h+12h cycle)
GB/T 18487.1-2023 Electric vehicle conductive charging system - Part 1: General requirements
GB/T 18487.2-2017 Electric vehicle conductive charging system - Part 2: EMC requirements for off-board electric vehicle supply equipment
GB/T 29317 Terminology of electric vehicle charging/battery swap infrastructure
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 29317 and the following apply.
3.1
public off-board charger
off-board chargers used to provide public services and carry out electric energy transactions
3.2
total charging energy
total charging electric energy recorded by the charger in its working state from the first charge
3.3
rate amount
amount obtained by multiplying the electric energy output by the charger in the corresponding time period in its working state by the rate
3.4
additional amount
expenses other than the rate amount recorded by the charger in its working state
Note: Such as parking fees, etc.
3.5
billable amount
sum of the rate amount and the additional amount recorded by the charger in its working state, which is used for settlement with the user
3.6
total billable amount
sum of the billable amount recorded by the charger in its working state from the first charge
3.7
measuring module
electric energy meter installed inside the charger for electric energy metering and external matching sensor device or integrated electric energy metering device with sensor device
3.8
maximum voltage
Umax
maximum voltage value at which the charger can output under rated operating conditions and can meter electric energy
3.9
minimum voltage
Umin
minimum voltage value at which the charger can output under rated operating conditions and can meter electric energy
3.10
maximum current
Imax
maximum current value at which the charger can output under rated operating conditions and can meter electric energy
3.11
minimum current
Imin
minimum current value at which the charger can output under rated operating conditions and can meter electric energy
4 Technical requirements
4.1 Interface for metering
Contents of GB/T 29318-2024
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
4.1 Interface for metering
4.2 Function
4.3 Complete machine requirements
4.4 Measuring module requirements
5 Test methods
5.1 Test reference conditions
5.2 Check of metering interface and nameplate
5.3 Function check
5.4 Accuracy test
5.5 Impulse constant test
5.6 Error variation test
5.7 Clock time error test
5.8 Climate and environmental influence test
6 Inspection rules
6.1 Inspection classification
6.2 Inspection items
6.3 Acceptance judgment
Annex A (Informative) Schematic diagram for calibration method
A.1 Actual load calibration method
A.2 Phantom load calibration method
Annex B (Normative) Inspection items
