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GB/T 18386-2017

Chinese Standard: 'GB/T 18386-2017'
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Detail Information of GB/T 18386-2017; GB/T18386-2017
Description (Translated English): Electric vehicles - Energy consumption and range - Test procedures
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: T47
Classification of International Standard: 43.020
Word Count Estimation: 22,282
Date of Issue: 2017-10-14
Date of Implementation: 2018-05-01
Drafting Organization: China FAW Technology Center, China Automotive Technology Research Center, Beijing New Energy Vehicle Co., Ltd., BYD Auto Industry Co., Ltd., Dongfeng Motor Corporation Technology Center, China Automotive Engineering Research Institute Co., Ltd., Chongqing Vehicle Inspection and Research Institute Co., Ltd., Anhui Jianghuai Automobile Co., Ltd., Chongqing Changan New Energy Vehicle Co., Ltd., Brilliance Automotive Group Holding Co., Ltd., Chery New Energy Vehicle Technology Co., Ltd., Shanghai Automotive Group Co., Ltd. Technology Center, Anhui Ankai Automobile Co., Zhejiang Geely Automobile Research Institute Co., Ltd.
Administrative Organization: National Automotive Standardization Technical Committee (SAC/TC 114)
Proposing organization: Ministry of Industry and Information Technology of the People Republic of China
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of PRC; China National Standardization Administration

GB/T 18386-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
T 47
Replacing GB/T 18386-2005
Electric Vehicles – Energy
Consumption and Range – Test Procedures
电动汽车 能量消耗率和续驶里程 试验方法
ISSUED ON. OCTOBER 14, 2017
IMPLEMENTED ON. MAY 01, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
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Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 5
4 Test Method for Range and Energy Consumption ... 6
4.1 General ... 6
4.2 Measurement parameters, units and accuracy ... 6
4.3 Test conditions .. 6
4.4 Test procedures ... 7
4.5 Calculation method for driving range and energy consumption ... 13
Appendix A (Informative) Recommended Program for the Heavy-Duty Commercial Vehicle
Driving Resistance Coefficient ... 19
Appendix B (Normative) NEDC Cycle ... 22
Appendix C (Normative) China Typical Urban Bus Cycle ... 27
Appendix D (Normative) C-WTVC Cycle .. 28
Bibliography .. 29
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard replaced GB/T 18386-2005 Electric Vehicles – Energy Consumption
and Rang – Test Procedures. Compared with GB/T 18386-2005, besides the editorial
modifications, this Standard has the major technical requirements as follows.
--- Test mass has significant changes;
--- The provisions on test shift has been changed;
--- Test environment temperature conditions have changes; delete the outdoor test
conditions;
--- The criterion for ending the test cycle has major changes; add the ending
conditions applicable to the working condition method for heavy-duty vehicles;
--- Add the parking provisions;
--- Add the calculation method for range and energy consumption in the working
condition method of heavy-duty vehicles;
--- Test cycle has changes; add China’s typical urban bus cycle specified in GB/T
19754-2015 and C-WTVC cycle specified in GB/T 27840-2011;
--- Add the recommended program for the driving resistance coefficient of heavy-
duty commercial vehicles.
This Standard was proposed by Ministry of industry and Information Technology of
PRC.
This Standard shall be under the jurisdiction of National Technical Committee of Auto
Standardization of Vehicles (SAC/TC 114).
Drafting organizations of this Standard. China FAW Group Corporation R&D Center,
China Automotive Technology & Research Center, Beijing New Energy Automobile Co.,
Ltd., BYD Auto Industry Company Limited, Dongfeng Motor Corporation Technical
Center, China Automotive Engineering Research Institute Co., Ltd., Chongqing Vehicle
Test & Research Institute Co., Ltd., Anhui Jianghuai Automobile Co., Ltd., Chongqing
Changan New Energy Vehicle Co., Ltd., Brilliance China Automotive Holdings Co., Ltd.,
Chery New Energy Automotive Technology Co., Ltd., Technology Center of Shanghai
Automotive Group Co., Ltd., Anhui Ankai Automobile Co., Ltd., and Zheiang Geely
Automobile Institute Co., Ltd.
Chief drafting staffs of this Standard. Ma Qizhen, Liu Guibin, Zheng Guangzhou, Ling
Heping, Ma Teng, Li Zheng, Zhao Jingwei, Lu Chun, Yue Fenglai, Ye Lei, Xu Qingkui,
Electric Vehicles – Energy
Consumption and Range – Test Procedures
1 Scope
This Standard specifies the test method for energy consumption and range of battery
electric vehicle.
This Standard is applicable to the battery electric vehicle. The electric right three-
wheeled motorcycle can refer to implement.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB 7258 Safety Specifications for Power-Driven Vehicles Operating on Roads
GB/T 12534 Motor Vehicles - General Rules of Road Test Method
GB 18352.5-2013 Limits and Measurement Methods for Emissions from Light-
Duty Vehicles (CHINA 5)
GB/T 19596 Terminology of Electric Vehicles
GB/T 19754-2015 Test Methods for Energy Consumption of Heavy-Duty Hybrid
Electric Vehicles
GB/T 27840-2011 Fuel Consumption Test Methods for Heavy-Duty Commercial
Vehicles
3 Terms and Definitions
The terms and definitions stipulated in GB 7258, GB/T 19596 are applicable to this
document.
maximum design traction mass.
4.3.2 Vehicle conditions
The test vehicle shall be loaded as per the technical requirements of each test.
The tires shall use the type required by the manufacturer as the original accessory; be
inflated according to the tire inflation pressure corresponding to the manufacturer
recommended tire maximum test load and maximum test speed. The viscosity of
lubricant used for the mechanical moving components shall conform to the provisions
of manufacturer.
Turn off the lighting, signaling device and auxiliary equipment in the vehicle; unless the
test and vehicle day-time operation have requirements for the above devices.
Except for the driving purposes, all storage systems (electrical energy, hydraulic
pressure, air pressure, etc.) shall be charged to the maximum value specified by the
manufacturer.
The test driver shall, according to the vehicle manufacturer recommended operating
procedures, make the power battery operate at the normal operating temperature.
Before the test, the test vehicle shall use the power battery equipped on it to drive at
least 300km.
4.3.3 Environment temperature conditions
Perform the indoor test at the room temperature of 20°C~30°C.
4.3.4 Test shift
If the manufacturer recommended vehicle driving mode can match with the reference
curve of the working conditions, then use the manufacturer recommended mode; if the
manufacturer recommended mode can’t meet the requirements for the reference curve
of the working conditions, then select the higher mode of maximum vehicle speed.
4.4 Test procedures
4.4.1 General
When confirming the energy consumption and range, the same test procedures shall
be used; the test procedures shall include the following three steps.
a) Perform the initial charge of the power battery (see 4.4.4);
b) Perform the range test under the working conditions or constant speed conditions
(see 4.4.5);
speed tolerance applicable to other categories vehicles is ±3km/h; the time tolerance
is ±1s.
During each driving cycle, the accumulated time allowed to exceed the tolerance range
against the categories M1, N1, M2 vehicles with maximum design total mass no
greater than 3500kg shall not exceed 4s; the accumulated time allowed to exceed the
tolerance range against other categories vehicles shall not exceed 10s. The total time
exceeding the tolerance shall be indicated in the test report.
4.4.3 Criterion for ending the test cycle
It mainly includes.
a) When performing the NEDC working condition test cycle specified in 4.4.5.2.
1) For the test vehicle with maximum speed greater than or equal to 120km/h, if
it can’t meet the tolerance requirements specified in 4.4.2, then stop test;
2) For the test vehicle with maximum speed less than 120km/h, when working
condition target speed is greater than vehicle declared maximum speed, the
speed benchmarking curve corresponding to the target working condition
shall be adjusted into the vehicle declared maximum speed; at this time, the
driver is required to depress the accelerator pedal to the end; the actual
vehicle speed is allowed to exceed the tolerance upper limit specified in 4.4.2;
when it can’t meet the tolerance lower limit requirements specified in 4.4.2,
then stop test; when working condition target speed is less than or equal to
the vehicle declared maximum speed, it can’t meet the tolerance
requirements specified in 4.4.2, stop test.
b) When performing China typical city bus cycle working condition test cycle
specified in 4.4.5.2, if it can’t meet the tolerance requirements specified in 4.4.2,
stop test.
c) When performing the C-WTVC working condition test cycle specified in 4.4.5.2,
speed is less than or equal to 70km/h, if it can’t meet the tolerance requirements
specified in 4.4.2, stop test; when speed is greater than 70m/h, if it can’t meet
the tolerance requirements, then depress the accelerator pedal to the end, till the
speed again follows the C-WTVC cycle working condition target speed, the
tolerance range specified in 4.4.2 is allowed to be exceeded.
d) When performing the constant speed test specified in 4.4.5.3, if the vehicle’s
driving speed doesn’t reach 54m/h (categories M1, N1, M2 vehicles with
maximum design total mass greater than 3500kg) or 36km/h (other vehicles
beyond categories M1, N1, M2 vehicles with maximum design total mass greater
than 3500kg), stop test.
When the test end condition is reached, maintain the shift unchanged, vehicle shall be
Record the number of parking and parking time of the test vehicle during the test period.
When test cycle working condition is end, vehicle stops, record the travelled distance
D of the test vehicle, expressed by km; the measured value shall be rounded off to the
nearest integer; such distance is the driving range measured by the constant speed
method. Meanwhile record the used time expressed in hour (h) and minute (min).
4.4.5.3.2 Constant speed method applicable to the vehicles beyond the
categories M1, N1, and M2 vehicles with maximum design total mass no greater
than 3500kg
Perform the (40±2)km/h constant speed test, the vehicle is allowed to park for twice
during the test process; each parking time shall not exceed 2min; when the vehicle
speed reaches the requirements stipulated in 4.4.3, stop test.
Record the number of parking and parking time of the test vehicle during the test period.
When test cycle working condition is end, vehicle stops, record the travelled distance
D of the test vehicle, expressed by km; the measured value shall be rounded off to the
nearest integer; such distance is the driving range measured by the constant speed
method. Meanwhile record the used time expressed in hour (h) and minute (min).
NOTE. the constant speed method test is retained only for other standard citations, and the
results shall not be treated as the driving range test result of ......
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