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JJG 1149: Evolution and historical versions
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| JJG 1149-2022 | English | 260 |
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Off-board Chargers for Electric Vehicles(for Trial Implementation)
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| JJG 1149-2018 | English | 150 |
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Off-board Charger for Electric Vehicles
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Similar standards QC/T 1132 | QC/T 1136 | JJG 1184 | JJG 1149-2022: Off-board Chargers for Electric Vehicles(for Trial Implementation)
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JJF
NATIONAL METROLOGICAL VERIFICATION REGULATIONS
Off-board Chargers for Electric Vehicles (for Trial
Implementation)
Issued on. JUNE 28, 2022
Implemented on. DECEMBER 28, 2022
Issued by. State Administration for Market Regulation
Administrative organization.
National Electromagnetic Metrology Technical Committee
Main drafting organizations.
China Institute of Metrology
Shenzhen Institute of Metrology and Quality Inspection
Participating drafting organizations.
Hangzhou Institute of Quality and Technical Supervision and Inspection
This Regulation is entrusted to National Electromagnetic Metrology Technical
Committee to be responsible for interpretation
Verification Regulation of Off-board
Chargers for Electric Vehicles (for Trial
Implementation)
Replacing JJG 1149-2018
Main drafters of this Regulation.
Liu Yue (China Institute of Metrology)
Zhou Di (Shenzhen Institute of Metrology and Quality Inspection)
Zhang Xiuzeng (China Institute of Metrology)
Participating drafters.
Huang Hongtao (China Institute of Metrology)
Zhan Binghua (Shenzhen Institute of Metrology and Quality Inspection)
Tong Jun (Hangzhou Institute of Quality and Technical Supervision and Inspection)
Wu Guojian (Hangzhou Institute of Quality and Technical Supervision and
Inspection)
Table of Contents
Introduction... 5
1 Scope... 6
2 Normative references... 6
3 Terms... 6
4 Overview... 7
5 Metrology performance requirements... 8
5.1 Operate error... 8
5.2 Clock time error... 9
6 General technical requirements... 9
6.1 Identification... 9
6.2 Testing interface... 10
6.3 Constant... 10
6.4 Minimum power variable... 10
6.5 Display of charging energy... 10
7 Measuring instrument control... 10
7.1 First verification, follow-up verification and in-use inspection... 10
7.2 Verification conditions... 10
7.3 Verification items and verification methods... 11
7.4 Processing of verification results... 16
7.5 Verification period... 17
Annex A Format for original record of verification... 18
Annex B Format for inner page of verification certificate/ verification result notification
(Page 2)... 21
Annex C Format for inner page of verification certificate/ verification result notification
(Page 3)... 22
1 Scope
This Regulation applies to the first verification, follow-up verification and in-use
inspection for off-board chargers for electric vehicles.
The verification of off-board chargers for electric vehicles based on statistical sampling
methods can be carried out in accordance with this Regulation.
2 Normative references
This Regulation refers to the following documents.
JJG 842-2017, Electronic Meters for Measuring Direct-current Electrical Energy
JJF 1139, Principle and method for determination verification period of measuring
instruments
NB/T 33001-2018, Specification for electric vehicle off-board conductive charger
For the dated documents, only the versions with the dates indicated are applicable to
this Regulation; for the undated documents, only the latest version (including all the
amendments) is applicable to this Regulation.
3 Terms
The following terms and definitions apply to this document.
3.1 off-board charger
A special device that is fixedly connected to an AC or DC power source, converts its
electrical energy into DC electrical energy, charges the power battery of an electric
vehicle by means of conduction, and has the functions of measuring, storing, and
providing results to users.
3.2 connection point
A connection point that the off-board charger is connected to the electric vehicle.
3.3 real load test method
A method of verification using the actual operating load.
3.4 virtual load test method
A method that uses the virtual load provided by the charger verification device to verify.
4 Overview
An off-board chargers for electric vehicles (hereinafter referred to as charger) is a
metrology device that provides DC power for electric vehicles. It is mainly composed
of rectification and chopper control unit, display interface or data transmission interface,
metrology module, connection device for conductive charging and other parts. The
schematic diagram of the charger is shown in Figure 1.
5 Metrology performance requirements
5.1 Operate error
The operate error of the charger is expressed by relative error. Under the verification
conditions specified in 7.2.1, the operate error of the charger shall meet the
requirements in Table 1.See Table 2 for the value of the average temperature coefficient
of the electric energy measurement of the charger.
5.2 Clock time error
For the charger with time-sharing charging function, the error of the clock time of the
charger shall not exceed 5s at the first verification. In the follow-up verification, it shall
not exceed 3min.
6 General technical requirements
6.1 Identification
The nameplate shall have the following identificati6.2 Testing interface
The technical indicators of the test output and communication interface of the charger
used for verification shall meet the requirements of relevant standards.
6.3 Constant
The charger shall have a pulse output corresponding to the measured DC energy. It shall
be consistent with the constant marked on the nameplate.
6.4 Minimum power variable
The minimum electric energy variable shall be 0.001kW·h.
7 Measuring instrument control
7.1 First verification, follow-up verification and in-use inspection
The first verification is for a charger that has not been verified. The follow-up
verification is any verification after the first verification.
7.2 Verification conditions
7.2.1 Ambient conditions for verification
When verifying the charger, the following conditions shall be met.
7.4 Processing of verification results
7.4.1 Processing of verification results
7.4.2 Rounding off method for measurement data
7.4.2.1 Rounding off method when the rounding off interval is 1.The right side of the
reserved digit is for the reserved digit 1.If it is greater than 0.5, add 1 to the reserved
digit. If it is less than 0.5, the reserved digit remains unchanged. If it is equal to 0.5, the
reserved digit remains unchanged when it is an even number. Add 1 when the reserved
digit is odd.
7.4.3 If all items meet the requirements, it is judged as qualified, otherwise it is judged
as unqualified. Chargers that pass the verification will be issued with a verification
certificate (see Annexes B and C for the format of the verification certificate) and a
verification-pass mark.
7.4.4 A verification-pass charger must be sealed at the position of the electric energy
meter or metrology module used inside it. Splitters that are used separately also need to
be sealed.
JJF 1149-2022
JJF
NATIONAL METROLOGICAL VERIFICATION REGULATIONS
Off-board Chargers for Electric Vehicles (for Trial
Implementation)
Issued on. JUNE 28, 2022
Implemented on. DECEMBER 28, 2022
Issued by. State Administration for Market Regulation
Administrative organization.
National Electromagnetic Metrology Technical Committee
Main drafting organizations.
China Institute of Metrology
Shenzhen Institute of Metrology and Quality Inspection
Participating drafting organizations.
Hangzhou Institute of Quality and Technical Supervision and Inspection
This Regulation is entrusted to National Electromagnetic Metrology Technical
Committee to be responsible for interpretation
Verification Regulation of Off-board
Chargers for Electric Vehicles (for Trial
Implementation)
Replacing JJG 1149-2018
Main drafters of this Regulation.
Liu Yue (China Institute of Metrology)
Zhou Di (Shenzhen Institute of Metrology and Quality Inspection)
Zhang Xiuzeng (China Institute of Metrology)
Participating drafters.
Huang Hongtao (China Institute of Metrology)
Zhan Binghua (Shenzhen Institute of Metrology and Quality Inspection)
Tong Jun (Hangzhou Institute of Quality and Technical Supervision and Inspection)
Wu Guojian (Hangzhou Institute of Quality and Technical Supervision and
Inspection)
Table of Contents
Introduction... 5
1 Scope... 6
2 Normative references... 6
3 Terms... 6
4 Overview... 7
5 Metrology performance requirements... 8
5.1 Operate error... 8
5.2 Clock time error... 9
6 General technical requirements... 9
6.1 Identification... 9
6.2 Testing interface... 10
6.3 Constant... 10
6.4 Minimum power variable... 10
6.5 Display of charging energy... 10
7 Measuring instrument control... 10
7.1 First verification, follow-up verification and in-use inspection... 10
7.2 Verification conditions... 10
7.3 Verification items and verification methods... 11
7.4 Processing of verification results... 16
7.5 Verification period... 17
Annex A Format for original record of verification... 18
Annex B Format for inner page of verification certificate/ verification result notification
(Page 2)... 21
Annex C Format for inner page of verification certificate/ verification result notification
(Page 3)... 22
1 Scope
This Regulation applies to the first verification, follow-up verification and in-use
inspection for off-board chargers for electric vehicles.
The verification of off-board chargers for electric vehicles based on statistical sampling
methods can be carried out in accordance with this Regulation.
2 Normative references
This Regulation refers to the following documents.
JJG 842-2017, Electronic Meters for Measuring Direct-current Electrical Energy
JJF 1139, Principle and method for determination verification period of measuring
instruments
NB/T 33001-2018, Specification for electric vehicle off-board conductive charger
For the dated documents, only the versions with the dates indicated are applicable to
this Regulation; for the undated documents, only the latest version (including all the
amendments) is applicable to this Regulation.
3 Terms
The following terms and definitions apply to this document.
3.1 off-board charger
A special device that is fixedly connected to an AC or DC power source, converts its
electrical energy into DC electrical energy, charges the power battery of an electric
vehicle by means of conduction, and has the functions of measuring, storing, and
providing results to users.
3.2 connection point
A connection point that the off-board charger is connected to the electric vehicle.
3.3 real load test method
A method of verification using the actual operating load.
3.4 virtual load test method
A method that uses the virtual load provided by the charger verification device to verify.
4 Overview
An off-board chargers for electric vehicles (hereinafter referred to as charger) is a
metrology device that provides DC power for electric vehicles. It is mainly composed
of rectification and chopper control unit, display interface or data transmission interface,
metrology module, connection device for conductive charging and other parts. The
schematic diagram of the charger is shown in Figure 1.
5 Metrology performance requirements
5.1 Operate error
The operate error of the charger is expressed by relative error. Under the verification
conditions specified in 7.2.1, the operate error of the charger shall meet the
requirements in Table 1.See Table 2 for the value of the average temperature coefficient
of the electric energy measurement of the charger.
5.2 Clock time error
For the charger with time-sharing charging function, the error of the clock time of the
charger shall not exceed 5s at the first verification. In the follow-up verification, it shall
not exceed 3min.
6 General technical requirements
6.1 Identification
The nameplate shall have the following identificati6.2 Testing interface
The technical indicators of the test output and communication interface of the charger
used for verification shall meet the requirements of relevant standards.
6.3 Constant
The charger shall have a pulse output corresponding to the measured DC energy. It shall
be consistent with the constant marked on the nameplate.
6.4 Minimum power variable
The minimum electric energy variable shall be 0.001kW·h.
7 Measuring instrument control
7.1 First verification, follow-up verification and in-use inspection
The first verification is for a charger that has not been verified. The follow-up
verification is any verification after the first verification.
7.2 Verification conditions
7.2.1 Ambient conditions for verification
When verifying the charger, the following conditions shall be met.
7.4 Processing of verification results
7.4.1 Processing of verification results
7.4.2 Rounding off method for measurement data
7.4.2.1 Rounding off method when the rounding off interval is 1.The right side of the
reserved digit is for the reserved digit 1.If it is greater than 0.5, add 1 to the reserved
digit. If it is less than 0.5, the reserved digit remains unchanged. If it is equal to 0.5, the
reserved digit remains unchanged when it is an even number. Add 1 when the reserved
digit is odd.
7.4.3 If all items meet the requirements, it is judged as qualified, otherwise it is judged
as unqualified. Chargers that pass the verification will be issued with a verification
certificate (see Annexes B and C for the format of the verification certificate) and a
verification-pass mark.
7.4.4 A verification-pass charger must be sealed at the position of the electric energy
meter or metrology module used inside it. Splitters that are used separately also need to
be sealed.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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