GB/T 35179-2017 (GBT 35179-2017)

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GB 35179-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.180
T 47
Bench test methods for safe ride
performance of in-use electric vehicles
ISSUED ON. DECEMBER 29, 2017
IMPLEMENTED ON. JULY 1, 2018
Issued by. General Administration of Quality Supervision, Test and
Quarantine of the People's Republic of China;
China National Standardization Administration.
3. No action is required - Full-copy of this standard will be automatically &
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Table of Contents
Foreword ... 3 
1 Scope .. 4 
2 Normative references ... 4 
3 Terms and definitions ... 5 
4 Test items ... 5 
5 Test conditions .. 6 
6 Test methods ... 8 
References ... 16 
Foreword ... 3 
1 Scope .. 4 
2 Normative references ... 4 
3 Terms and definitions ... 5 
4 Test items ... 5 
5 Test conditions .. 6 
6 Test methods ... 8 
References ... 16 
Foreword
This standard is drafted in accordance with the rules given GB/T 1.1-2009.
This standard was proposed by and shall be under the jurisdiction of National
Motor Vehicle Safety Technology Testing Equipment Standardization Technical
Committee (SAC/TC 364).
The drafting organizations of this standard. Shenzhen Institute of Advanced
Technology, Chinese Academy of Sciences; National Institute of Measurement
and Testing Technology; Shenzhen Tektronix Traffic Technology Co., Ltd.; Jilin
Institute of Metrology and Research; Shenzhen Wuzhoulong Automobile Co.
Ltd.; Chang'an University; Research Institute of Highway Ministry of Transport;
Traffic Management Research Institute of the Ministry of Public Security;
Tianjin Chinese-Academy-of-Sciences Institute of Advanced Technology Co.,
Ltd.
The main drafters of this standard. Wu zhengbin, Yang Chunsheng, Ma
Qiangjun, Deng Jia, Liu Meisheng, Jia Yan, Wu San, Li Hongsheng, Fang
Facheng, Deng Xianquan, Quan Songhua, Zhao Xiangmo, Liu Yuanpeng, Sun
Wei, Li Bing, Zhao Guoqiang and Cao Xiaoyan.
Bench test methods for safe ride
performance of in-use electric vehicles
1 Scope
This standard specifies the test items and methods of electric vehicles, such as
routine test, electrical safety, drive capability, electrical energy consumption,
power storage battery system and in-vehicle electromagnetic environment.
This standard applies to in-use electric vehicles of category-M and category-N,
it is not suitable for fuel cell electric vehicles and full-time four-wheel drive
electric vehicles.
2 Normative references
The following documents are essential for the application of this document. For
dated references, only the dated version applies to this document. For undated
references, the latest version (including all amendments) applies to this
document.
GB/T 18384.3 Electric vehicles - Safety specification - Part 3. Protection of
persons against electric hazards
GB/T 18385 Electric vehicles - Power performance - Test methods
GB/T 18386 Electric vehicles - Energy consumption and range - Test
procedures
GB 18565 Composite performance requirement and detecting methods for
road transport vehicles
GB/T 19596 Terminology of electric vehicles
GB 21861 Items and methods of motor vehicles safety technology test
JT/T 445 Automobile chassis dynamometer
QC/T 897 Technical specification of battery management system for electric
vehicles
6.2.2.1 In accordance with the measurement method specified in GB/T 18384.3,
use Megger to measure insulation resistance value between the power system
and the chassis of electric vehicles.
6.2.2.2 The measurement voltage shall be DC voltage with no less than
maximum operating voltage of power system and shall be applied for a
sufficient period to obtain a stable reading. When measuring, power storage
battery and auxiliary storage battery shall be disconnected; the bonding parts
of auxiliary circuit at both ends shall be connected with vehicle chassis.
6.2.2.3 Under maximum operating voltage, the minimum value of insulation
resistance for DC circuit shall be at least greater than100 Ω/V; for AC circuit, it
shall be at least greater than 500 Ω/V.
6.3 Drive capability
6.3.1 Driving wheel driving force under specified operating conditions
It shall be tested for driving wheel driving force under specified operating
conditions according to the following methods.
a) Place driving wheel of vehicles-under-test on chassis dynamometer roller.
Dynamometer uses constant-speed control mode;
b) Start vehicle and accelerate gradually. Electric vehicles with transmission
change to direct gear;
c) The measurement speed of category-M1 and category-N1 vehicles is
(60±0.2) km/h through dynamometer control system; except category-M1
and category-N1 vehicles, the measurement speed of other vehicles is
(50±0.2) km/h;
d) Step on accelerator pedal slowly, step by step, until the displayed driving
force is higher than the calculated value of loading force specified in 6.3.3,
stabilizing for more than 10 s. Record power, torsion and speed of
vehicles-under-test within measurement interval stabilizing for 10 s and
take average value;
e) If accelerator pedal is maximally depressed, the displayed driving force
still cannot reach the calculated value of loading force specified in 6.3.3;
then record the power, torsion and speed of vehicles within 10 s
measurement-interval; and take the average value; label it with obvious
mark, then exit this test.
6.3.2 Stable running capacity under specified operating conditions
storage battery management system does not meet the needs of power
storage battery of QC/T 897, then use testing equipment to measure
directly the total voltage, total current and temperature of power storage
battery system;
b) Before the beginning of the test, record the monomer voltage of power
storage battery Ui, the total voltage of power storage battery system Ut,
the nominal total voltage of manufacturer’s power storage battery system
Utn, and the standard discharge current of manufacturer’s power storage
battery system It;
c) According to the method of "6.4.1b)", load chassis dynamometer, set and
control testing vehicle speed of vehicles-under-test;
d) After the vehicle speed is stable for 5 seconds, measure the steady current
value I't of power storage battery system under steady speed,
continuously sampling 3 times; interval time is no less than 2 s, record
average value;
e) After the end of the test, record the average value of total voltage of power
storage battery system-U't, battery monomer voltage - U'i, i = 1, 2, ... n
within 2 s; record the maximum value of all temperature measurement
points of battery system within 2 seconds after the end of vehicle driving-
Tmax;
f) When the battery temperature exceeds 65 °C, stop testing;
When the battery system automatically terminates discharge, stop testing;
In discharge stage, if the monomer storage battery voltage is lower than the
final discharging voltage specified in technical conditions of the enterprises,
then stop testing; when the SOC (battery state of charge) is lower than 30%,
then stop testing, record the monomer voltage for SOC at 30%; When the
running speed of vehicles cannot reach 54 km/h (category-M1 and category-N1
vehicles) or 45 km/h (other in-use electric vehicles except category-M1 and
category-N1 vehicles), stop testing.
6.5.2 Technical indicators of power storage battery system
6.5.2.1 Maximum voltage difference of power storage battery module under
specified conditions - ΔUs
After testing in accordance with the method of 6.5.1, within 2s, collect
respectively each monomer voltage in series in power storage battery module;
the maximum voltage difference of battery monomer of power storage battery
module is calculated according to equation (3).
Collect the maximum value, Tmax, in degrees Celsius (°C), of all temperature
measurement points of power storage battery system for vehicles within 2s after
the end of the test, in accordance with the method of 6.5.1.
6.5.2.5 Power storage battery capacity
Power storage battery capacity is tested according to the following methods.
a) According to the discharge procedure of power storage battery specified
in GB/T 18386, the power storage battery of vehicles-under-test is fully
discharged until the battery system automatically terminates discharging;
b) The power storage battery that is completely discharged for vehicles-
under-test stands for 20min ~ 30min;
c) According to the charging process of GB/T 18385, use charge-discharge
machine to charge for power storage battery, so that the power storage
battery is fully charged;
d) Record the capacity of fully-charged battery as the actual capacity of the
power storage battery.
6.6 In-vehicle electromagnetic environment
The testing points of in-vehicle electromagnetic environment shall select 3
points among the following 5 points -- including the front center of driver's seat,
in the middle of co-pilot's two feet, in the middle of back-row seat near rear axle,
in the middle of last-row seat, and the in-vehicle position closest to motor
controller; the selected 3 points shall be tested according to the following
methods.
a) Before starting vehicle, turn on electromagnetic radiation test-meter;
measure and record the electric field intensity and magnetic induction
intensity that are measured at a given position in the vehicle;
b) According to the method of "6.4.1b)", load chassis dynamometer; set and
control the testing vehicle speed of vehicles-under-test;
c) After the speed is stable, turn on electromagnetic radiation test-meter;
measure and record the data of electric field intensity and magnetic
induction intensity that are measured at a given position in the vehicle.
References
[1] GB/T 3730.1 Motor vehicles and trailers-Types-Terms and definitions
[2] GB 7258 Technical specifications for safety of power-driven vehicles
operating on roads
[3] GB 8702 Controlling limits for electromagnetic environment
[4] GB/T 15089 Classification of power-driven vehicles and trailers
[5] GB/T 18276 Test-bed methods and evaluating index of dynamic property
for motor vehicles
[6] GB/T 19596 Terminology of electric vehicles
[7] GB/T 19751 Hybrid electric vehicles safety specification