GB/T 28569-2024 Electric energy metering for electric vehicle AC charging spot
1 Scope
This document specifies the technical requirements, test methods and inspection rules for AC electric energy metering between electric vehicle AC charging spot and electric vehicle.
This document is applicable to the design, manufacture, acceptance and use of electric energy metering for the whole charger of public AC charger (hereinafter referred to as "charger"), and other types of AC charger shall be implemented in accordance with this document.
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 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 - Test 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 AC charger
AC charger installed in public area to realize the transfer of electric energy property rights, with metering and billing functions, and to provide settlement vouchers after the end of charging
3.2
total charging energy
total charging energy recorded by charger in the working state since the first charge
3.3
rate amount
amount obtained by multiplying the electric energy output of charger in the corresponding period of working state by the rate
3.4
additional amount
charges other than the rate amount recorded in the working state of charger
Note: Such as parking fees.
3.5
billable amount
sum of the rate amount and additional amount recorded in the working state of charger, which is used for settlement with the user
3.6
total billable amount
sum of the billable amount recorded from the first charge in the working state of charger
3.7
measuring module
electrical meter installed inside a charger for measuring electric energy
4 Technical requirements
4.1 Interface
Electric energy metering interface of charger shall meet the following requirements:
a) It shall have an interface for transmitting AC electric energy with the electric vehicle charging and energy storage system;
b) It should have an electric energy pulse output interface for measuring errors, which can be directly output through the body;
c) It shall have a communication interface for transmitting electric energy and electricity charge information;
Contents
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
4.1 Interface
4.2 Function
4.3 Requirements for charger
4.4 Requirements for measuring module
5 Test methods
5.1 Test reference condition
5.2 Metering interface and nameplate inspection
5.3 Function inspection
5.4 Accuracy test
5.5 Pulse constant test
5.6 Error variation test
5.7 Clock time error test
5.8 Climate and environmental effect test
6 Inspection rules
6.1 Inspection classification
6.2 Inspection items
Annex A (Informative) Verification methods
A.1 Real load verification method
A.2 Virtual load verification method
Annex B (Normative) Test items
