GB/T 28569-2024 English PDF (GBT28569-2024)

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GB/T 28569-2024: Electric energy metering for electric vehicle AC charging spot
GB/T 28569-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.020
CCS K 81
Replacing GB/T 28569-2012
Electric energy metering for electric vehicle AC charging
spot
ISSUED ON: SEPTEMBER 29, 2024
IMPLEMENTED ON: APRIL 01, 2025
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Technical requirements ... 6
4.1 Interfaces ... 6
4.2 Function ... 7
4.3 Whole spot requirements ... 10
4.4 Requirements for measuring modules ... 12
5 Test methods ... 13
5.1 Test reference conditions ... 13
5.2 Metering interface and nameplate inspection ... 14
5.3 Function inspection ... 14
5.4 Accuracy test ... 14
5.5 Pulse constant test ... 18
5.6 Error variation test ... 19
5.7 Clock time error test ... 19
5.8 Climate and environmental impact test ... 20
6 Inspection rules ... 20
6.1 Inspection classification ... 20
6.2 Inspection Items ... 20
Annex A (informative) Schematic diagram of calibration methods ... 22
A.1 Actual load verification method ... 22
A.2 Virtual load verification method ... 22
Annex B (normative) Inspection items ... 24
Electric energy metering for electric vehicle AC charging
spot
1 Scope
This document specifies the technical requirements, test methods and inspection rules
for AC power metering between electric vehicle AC charging spots and electric vehicles.
This document is applicable to the design, manufacture, acceptance and use of the
whole-spot electric energy metering of public AC chargers (hereinafter referred to as
"charging spot"). Other types of AC charging spots shall refer to this document for
implementation.
2 Normative references
The following referenced documents are indispensable for the application 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 (12 h + 12 h 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 defined in GB/T 29317 as
well as the followings apply.
shall be no less than 6, including at least 2 decimal places. The resolution shall
not be greater than 0.01 yuan;
c) The current clock time display resolution shall not be greater than 1 s.
4.2.7.3 Charging display
4.2.7.3.1 Charging start display
The charging start display of the charging spot meets the following requirements.
a) The display content of the last charging end shall be automatically cleared before
the current charging operation.
b) If there are multiple billing methods to choose from, there shall be a clear interface
for users to choose before starting charging. If there is only one billing method
and rate, there shall be a clear interface to inform users of the billing method, rate
and rate period.
4.2.7.3.2 Charging process display
The charging process display of the charging spot shall meet the following requirements:
a) During charging, the current billing method, real-time charging energy, real-time
billable amount, and current time shall be displayed;
b) The current rate, current rate charging volume, current rate billable amount, and
current rate period shall be displayed;
c) If the spot body is displayed, the refresh time interval of the displayed data shall
not be greater than 1 s.
4.2.7.3.3 Charging end display
The charging end display of the charging spot meets the following requirements:
a) The end of charging shall be clearly displayed;
b) The amount charged this time, the amount billed this time, the start and end time
of this charging, each rate used for this charging, the amount charged at each rate,
the billable amount at each rate, and the additional amount shall be displayed.
4.2.8 Charging receipt function
The charging receipt function of the charging spot meets the following requirements:
a) After the charging settlement is completed, an electronic or paper charging receipt
shall be provided;
b) The receipt content shall not be less than: charging spot identification code,
charging service provider name, charging service provider contact information,
total charging energy of this charging, billable amount of this charging, start and
end time of this charging, each charging rate used for this charging, charging
amount of each rate, billable amount of each rate, and additional amount.
4.2.9 Consistency requirements
If the charging spot has multiple human-computer interaction methods, all information
related to metering and billing shall be consistent when charging is completed.
4.2.10 Software protection function
4.2.10.1 Preventing mis-operation
The charging spot shall have a software protection function that minimizes the
possibility of mis-operation.
4.2.10.2 Prevention of fraud
Charging spot metering and billing related software shall be protected from
unauthorized modification, loading or change by replacing the storage device. For
charging spots with loaded software or parameters, security measures shall be used to
protect them.
4.2.10.3 Parameter protection
The parameters used by charging spots to determine metering and billing characteristics
shall be protected from unauthorized modification. Authorized modifications are not
allowed during the charging process.
4.2.11 Other functions
During the charging process, if the charging spot cannot perform billing normally, the
current charging and metering and billing shall be stopped immediately. The current
metering and billing value is stored. After the above functions are restored, metering
and billing shall be restarted.
4.3 Whole spot requirements
4.3.1 Connection point location
The location of the charging spot connection point meets the following requirements:
a) When the charging spot connection point is at the charging spot connection point,
the location of the connection point shall comply with the requirements of 3.1.5.1,
3.1.5.2 and 3.1.5.5 in GB/T 18487.1-2023;
point within the minimum current and maximum current range indicated on the
nameplate for basic error test. Then set the charging spot input voltage to 120%Ub and
80%Ub respectively. Test the basic error of the charging spot at the same load point.
Calculate the error change before and after.
Check whether the test results comply with the requirements of 4.3.4.2.
5.4.4 Frequency change test
During the test, under the test reference conditions specified in Table 4, select any load
point within the minimum current and maximum current range indicated on the
nameplate for basic error test. Set the charging spot input frequency to 51 Hz and 49
Hz ...