GB/T 34870.1-2017 English PDF (GBT34870.1-2017)

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GB/T 34870.1-2017: Super capacitors -- Part 1: General
GB/T 34870.1-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 31.060.70
K 42
Super capacitors - Part 1: General
ISSUED ON: NOVEMBER 01, 2017
IMPLEMENTED ON: MAY 01, 2018
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the PRC;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 4 
4 Conditions of use ... 9 
5 Classification ... 10 
5.1 Overview ... 10 
5.2 Classification according to electrodes ... 10 
5.3 Classification according to principle ... 10 
5.4 Classification according to electrolyte ... 10 
6 Quality requirements and tests ... 10 
6.1 Test classification ... 10 
6.2 Test conditions ... 10 
6.3 Test items ... 12 
6.4 Test methods ... 13 
7 Safety requirements ... 30 
7.1 Safety requirements for case connection ... 30 
7.2 Other safety requirements ... 30 
8 Marking ... 30 
8.1 Cell ... 30 
8.2 Module ... 30 
8.3 Packaging box ... 31 
9 Packaging, transportation and storage ... 31 
9.1 Packaging ... 31 
9.2 Transportation, storage and installation ... 31 
10 Environmental protection ... 32 
10.1 Prevention of environmental pollution by chemicals ... 32 
10.2 Electromagnetic compatibility ... 33 
10.3 Noise ... 33 
Bibliography ... 34 
Super capacitors - Part 1: General
1 Scope
This Part of GB/T 34870 specifies the terms and definitions, conditions of use,
classification, quality requirements and tests, safety requirements, marking,
packaging, transportation and storage, and environmental protection
requirements for super capacitors.
This Part applies to super capacitors including electric double-layer, hybrid,
battery capacitors.
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the editions with the dates indicated are
applicable to this document. For the undated references, the latest edition
(including all the amendments) are applicable to this document.
IEC 61373:2010 Railway applications - Rolling stock equipment - Shock and
vibration tests
IEC 62391-1:2015 Fixed electric double-layer capacitors for use in electric
and electronic equipment - Part 1: Generic specification
IEC 62576:2009 Electric double-layer capacitors for use in hybrid electric
vehicles - Test methods for electrical characteristics
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Capacitance
The ability to store electric charge.
Note: Modify GB/T 2900.16-1996, definition 2.3.1.
3.2
c) Atmospheric pressure: 86 kPa~106 kPa.
Unless otherwise agreed between the manufacturer and the purchaser, when
calibration is necessary, the reference temperature during calibration is 20 °C.
Unless otherwise specified, generally, at the current specified by the
manufacturer, the capacitor shall be discharged at the constant current, until its
minimum operated voltage. And put it under the above environmental
conditions for 24 h. Then test the performance of the capacitor, as a basis for
comparison after the product test (but the test environment before and after the
test shall be consistent).
6.2.2 Measuring instruments and meters
The accuracy of measuring instruments and meters shall meet the following
requirements:
a) Voltage measuring device: Accuracy is not less than level 0.5;
b) Current measuring device: Accuracy is not less than level 0.5;
c) Temperature measuring device: It shall have an appropriate measuring
range. The division value is not more than 1 °C. The calibration accuracy
is not less than 0.5 °C;
d) Timer: Divide by hour, minute and second. The accuracy is ±0.1%;
e) Measuring tool for measuring dimensions: Division value is not more than
1 mm;
f) Weighing instrument for weighing mass: Accuracy is above ±0.05%.
6.2.3 Charging and discharging current
Unless otherwise specified, the charging and discharging current of this Part is
selected according to the constant current I, as follows:
a) Hybrid capacitor: I=5I1 or 8C (or a current not lower than 5I1 provided by
the manufacturer), whichever is greater;
b) Electric double-layer capacitor: I=40I1 or 66C (or a current not lower than
40I1 provided by the manufacturer), whichever is the greater;
c) Battery capacitor: 3C.
Note 1: C represents the ratio of the current magnitude when the capacitor is charged and
discharged. 3C is discharge at 3 times the current.
Use the measuring tool and weighing instrument to check the boundary
dimensions and mass of the capacitor cell. It shall meet the technical conditions
provided by the manufacturer.
6.4.1.3 Capacitance measurement
6.4.1.3.1 Capacitance
Follow the steps below to test the capacitance of capacitor cell:
a) At a constant current I, the capacitor cell is charged to the rated voltage
UR;
b) At a constant current I, the capacitor cell is discharged to the minimum
operated voltage Umin;
c) Repeat steps a)~b) 3 times. Record the discharge time t of the capacitor
voltage from 90% of the rated voltage to the minimum operated voltage
Umin;
d) According to formula (1), calculate the capacitance of the capacitor cell in
each cycle. Take the average value.
Where:
C - Capacitance, in farad (F);
I - Charging and discharging current, in amperes (A);
t - Charging time, in seconds (s);
UR - Rated voltage, in volts (V);
Umin - Minimum operated voltage, in volts (V).
The capacitance deviation shall not exceed ±10% of the rated capacitance.
6.4.1.3.2 Storage energy
Follow the steps below to test the storage energy and mass energy density of
the capacitor cell:
a) At a constant current I, the capacitor cell is charged to the rated voltage
UR;
The internal resistance shall not be greater than the nominal internal resistance.
6.4.1.5 Measurement of maximum mass power density
After measuring the internal resistance of the capacitor cell according to the
method in 6.4.1.4, according to formula (5), calculate the maximum mass power
density of the capacitor cell.
Where:
Pdm - Maximum mass power density, in watts per kilogram (W/kg);
UR - Rated voltage, in volts (V);
R - Internal resistance, in ohms (Ω);
M - Mass of capacitor cell, in kilograms (kg).
The maximum mass power density shall not be less than the nominal value.
6.4.1.6 Short-circuit discharge test
At a constant current I, charge the capacitor to the rated voltage UR; keep the
constant voltage for 1 h. At 25 °C±5 °C, place it for 1 h. The super capacitor is
externally short-circuited for 10 min. The external circuit resistance shall be less
than 5 mΩ. Record the short-circuit discharge current value and actual
resistance.
During and after the test, the sample shall not explode, fire or leak.
6.4.1.7 Test of voltage holding characteristics
Follow the steps below to test the voltage holding characteristics of the
capacitor:
a) At a constant current I, the capacitor cell is charged to the rated voltage
UR;
b) The capacitor cell is charged at the constant rated voltage for 30 min;
c) After standing in open circuit for 24 h at test temperature, measure the
terminal voltage of the capacitor cell. Calculate the ratio of the terminal
voltage to the rated voltage, as its voltage holding characteristics.
After the test, the ...