Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 24157-2009 Electric motorcycles and electric mopeds - Energy consumption and range - Test procedures.
The following main revisions have been made with respect to GB/T 24157-2009:
——The relevant definition and test method of "indication for the state of charge” are added;
——The test termination conditions are modified, i.e. "more than 4s accumulatively" is changed to "last for more than 4s";
——The test speed and time tolerance are modified;
——The calculation method of test results is modified, i.e. the conversion of equivalent range and equivalent energy consumption is canceled, and the results of two test conditions are recorded separately;
——The cycle condition of electric mopeds is modified.
This standard was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This standard is under the jurisdiction of National Technical Committee of Auto Standardization (SAC/TC 114).
The previous edition of this standard is as follows:
——GB/T 24157-2009.
Test methods of range and indication for the state of charge for electric motorcycles and electric mopeds
1 Scope
This standard specifies the test methods of range, energy consumption and indication for the state of charge for electric motorcycles and electric mopeds.
This standard is applicable to electric motorcycles and electric mopeds with energy storage batteries as the only power source, and may also serve as a reference for the pure electric driving mode for hybrid motorcycles.
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 (including any amendment) applies.
GB/T 5359.1 Term for motorcycles and mopeds - Part 1: Types of vehicles
GB/T 5378 Methods of road test for motorcycles and mopeds
GB 14622 Limits and measurement methods for emissions from motorcycles (China IV)
GB 18176 Limits and measurement methods for emissions of pollutants from mopeds (China IV)
GB/T 18385-2005 Electric vehicles - Power performance - Test method
GB/T 19596 Terminology of electric vehicles
GB 24155 Safety specifications for electric motorcycles and electric mopeds
GB/T 24156-2009 Electric motorcycles and electric mopeds - Power performance - Test methods
GB/T 24158 General specifications for electric motorcycles and electric mopeds
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 19596, GB/T 5359.1 and GB/T 24158 as well as the following apply.
3.1
mass of test vehicle
complete kerb mass plus the loading mass required for the test. The loading mass, including the mass of driver and test instruments, is (75±5)kg. The mass of test vehicle shall include the mass of power battery
3.2
range
distance, in km, that the vehicle can run normally and continuously, from the fully charged state of the power battery to the set test termination condition
3.3
energy consumption
value obtained by dividing the electric energy obtained from the grid by the range, from the fully charged state of the power battery to recharging to the fully charged state after the range test is conducted according to the prescribed method, in W·h/km
3.4
state of charge
ratio of the remaining capacity to the rated one after the power battery is discharged, usually expressed as a percentage
3.5
indication for the state of charge
display of the state of charge in the form of pointer, indicator light, digit, data bar, etc. for viewing. Refer to Annex A for typical types of indication for the state of charge
3.6
warning for the state of charge
warning by sound and light signals given to prompt charging as soon as possible when the state of charge is below the warning value
3.7
range of warning for the state of charge
distance, in km, that the vehicle can still run normally after the warning for the state of charge is given
3.8
margin of warning for the state of charge
ratio of the difference between the measured value of the range of warning for the state of charge and the manufacturer's nominal value to the range, expressed as a percentage
4 Test conditions
4.1 Test vehicle conditions
4.1.1 The test vehicle shall be equipped with indicating and warning devices for the state of charge, and meet the requirements of GB 24155.
4.1.2 The power battery that the test vehicle is equipped with shall be produced within a year, and charged and discharged for no more than 50 times.
4.1.3 Before the test, the test vehicle shall run in for at least 300km with the matched power battery, or run in according to the procedure recommended by the manufacturer until the vehicle reaches a stable state. The running-in process shall be carried out according to the specifications specified in the instructions; if not specified, refer to the method specified in 5.3.1.
4.1.4 The test vehicle shall be maintained according to the use and maintenance instructions and relevant technical documents, so as to be in normal technical condition.
4.1.5 The test vehicle shall be loaded according to 3.1. If the test is carried out on a chassis dynamometer, the test vehicle shall be loaded according to the mass of test vehicle specified in GB 18176 or GB 14622.
4.1.6 The tyre pressure shall comply with the product use instructions.
4.1.7 Except the necessary equipment and daily operation parts of the vehicle, the lighting and signaling devices as well as auxiliary devices of the test vehicle shall be turned off.
4.2 Test road conditions
4.2.1 The test road shall be asphalt or concrete road, and the pavement shall be flat, dry and clean. In case of a ring road, the turning radius shall be no less than 50m.
4.2.2 The test section shall be kept level, with the longitudinal gradient not exceeding 1%, the transverse gradient not exceeding 3%, and the height difference between any two points in the whole length not exceeding 1m.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Test conditions
5 Test methods
Annex A (Informative) Reference legends for typical types of indication for the state of charge
Annex B (Informative) Table for the record of test
Annex C (Normative) Running cycle and setting of chassis dynamometer
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 24157-2009 Electric motorcycles and electric mopeds - Energy consumption and range - Test procedures.
The following main revisions have been made with respect to GB/T 24157-2009:
——The relevant definition and test method of "indication for the state of charge” are added;
——The test termination conditions are modified, i.e. "more than 4s accumulatively" is changed to "last for more than 4s";
——The test speed and time tolerance are modified;
——The calculation method of test results is modified, i.e. the conversion of equivalent range and equivalent energy consumption is canceled, and the results of two test conditions are recorded separately;
——The cycle condition of electric mopeds is modified.
This standard was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This standard is under the jurisdiction of National Technical Committee of Auto Standardization (SAC/TC 114).
The previous edition of this standard is as follows:
——GB/T 24157-2009.
Test methods of range and indication for the state of charge for electric motorcycles and electric mopeds
1 Scope
This standard specifies the test methods of range, energy consumption and indication for the state of charge for electric motorcycles and electric mopeds.
This standard is applicable to electric motorcycles and electric mopeds with energy storage batteries as the only power source, and may also serve as a reference for the pure electric driving mode for hybrid motorcycles.
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 (including any amendment) applies.
GB/T 5359.1 Term for motorcycles and mopeds - Part 1: Types of vehicles
GB/T 5378 Methods of road test for motorcycles and mopeds
GB 14622 Limits and measurement methods for emissions from motorcycles (China IV)
GB 18176 Limits and measurement methods for emissions of pollutants from mopeds (China IV)
GB/T 18385-2005 Electric vehicles - Power performance - Test method
GB/T 19596 Terminology of electric vehicles
GB 24155 Safety specifications for electric motorcycles and electric mopeds
GB/T 24156-2009 Electric motorcycles and electric mopeds - Power performance - Test methods
GB/T 24158 General specifications for electric motorcycles and electric mopeds
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 19596, GB/T 5359.1 and GB/T 24158 as well as the following apply.
3.1
mass of test vehicle
complete kerb mass plus the loading mass required for the test. The loading mass, including the mass of driver and test instruments, is (75±5)kg. The mass of test vehicle shall include the mass of power battery
3.2
range
distance, in km, that the vehicle can run normally and continuously, from the fully charged state of the power battery to the set test termination condition
3.3
energy consumption
value obtained by dividing the electric energy obtained from the grid by the range, from the fully charged state of the power battery to recharging to the fully charged state after the range test is conducted according to the prescribed method, in W·h/km
3.4
state of charge
ratio of the remaining capacity to the rated one after the power battery is discharged, usually expressed as a percentage
3.5
indication for the state of charge
display of the state of charge in the form of pointer, indicator light, digit, data bar, etc. for viewing. Refer to Annex A for typical types of indication for the state of charge
3.6
warning for the state of charge
warning by sound and light signals given to prompt charging as soon as possible when the state of charge is below the warning value
3.7
range of warning for the state of charge
distance, in km, that the vehicle can still run normally after the warning for the state of charge is given
3.8
margin of warning for the state of charge
ratio of the difference between the measured value of the range of warning for the state of charge and the manufacturer's nominal value to the range, expressed as a percentage
4 Test conditions
4.1 Test vehicle conditions
4.1.1 The test vehicle shall be equipped with indicating and warning devices for the state of charge, and meet the requirements of GB 24155.
4.1.2 The power battery that the test vehicle is equipped with shall be produced within a year, and charged and discharged for no more than 50 times.
4.1.3 Before the test, the test vehicle shall run in for at least 300km with the matched power battery, or run in according to the procedure recommended by the manufacturer until the vehicle reaches a stable state. The running-in process shall be carried out according to the specifications specified in the instructions; if not specified, refer to the method specified in 5.3.1.
4.1.4 The test vehicle shall be maintained according to the use and maintenance instructions and relevant technical documents, so as to be in normal technical condition.
4.1.5 The test vehicle shall be loaded according to 3.1. If the test is carried out on a chassis dynamometer, the test vehicle shall be loaded according to the mass of test vehicle specified in GB 18176 or GB 14622.
4.1.6 The tyre pressure shall comply with the product use instructions.
4.1.7 Except the necessary equipment and daily operation parts of the vehicle, the lighting and signaling devices as well as auxiliary devices of the test vehicle shall be turned off.
4.2 Test road conditions
4.2.1 The test road shall be asphalt or concrete road, and the pavement shall be flat, dry and clean. In case of a ring road, the turning radius shall be no less than 50m.
4.2.2 The test section shall be kept level, with the longitudinal gradient not exceeding 1%, the transverse gradient not exceeding 3%, and the height difference between any two points in the whole length not exceeding 1m.
Contents of GB/T 24157-2017
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Test conditions
5 Test methods
Annex A (Informative) Reference legends for typical types of indication for the state of charge
Annex B (Informative) Table for the record of test
Annex C (Normative) Running cycle and setting of chassis dynamometer
