GB/T 33339-2016 in English

《GB/T 33339-2016全钒液流电池系统 测试方法》由TC342（全国燃料电池及液流电池标准化技术委员会）归口，主管部门为中国电器工业协会。

ChinaStandards.net 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 was proposed by China Electrical Equipment Industry Association.

This standard is under the jurisdiction of National Technical Committee on Fuel Cell and Flow Battery of Standardization Administration of China (SAC/TC 342).
Vanadium flow battery system - Test method

1 Scope

This standard specifies the terms and definitions, test items, test preparation, test conditions, measuring instruments and test methods of vanadium flow battery system (hereinafter referred to as battery system).

This standard is applicable to the battery system of various scales and applications.

This standard does not address electromagnetic compatibility (EMC) test.

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 of the referenced document (including any amendments) applies.

GB/T 29840-2013 Vanadium flow battery - Terminology
NB/T 42040-2014 General specification for vanadium flow battery
ISO/IEC Guide 98-3 Uncertainty of measurement - Part 3: Guide to the expression of uncertainty in measurement

3 Terms and definitions

For the purposes of this document, the terms and definitions given in GB/T 29840-2013, NB/T 42040-2014 as well as the following apply. For the convenience of application, some terms and definitions specified in GB/T 29840-2013 are listed below.

3.1
vanadium flow battery; VFB
energy storage device that realizes the mutual conversion of electric energy and chemical energy through the electrochemical reaction of vanadium ions with different valence in positive and negative electrolyte. It is also called vanadium flow battery system

Note: The vanadium flow battery is mainly composed of power unit (stack or module), energy storage unit (electrolyte and storage tank), electrolyte delivery unit (pipeline, valve, pump, heat exchanger, etc.) and battery management system, etc.

[GB/T 29840-2013, Definition 2.1]

 
3.2
state of charge; SOC
ratio of the actual (remaining) dischargeable energy capacity to the actual dischargeable maximum energy capacity of the battery

[GB/T 29840-2013, Definition 2.22.4]

4 Test items

The items of the performance tests and safety tests related to the battery system are given in Table 1.

Table 1 Test items and test classification
No. Performance Safety
1 Stack conformance test Over charge test
2 Rated power test Over discharge test
3 Maximum discharge power test Flame retardant test
4 Maximum charge power test Hydrogen leakage test
5 Rated energy capacity test Insulation resistance test
6 Maximum energy capacity test -
7 Test on rated energy efficiency of battery system -
8 Capacity retention ability test -
9 Low-temperature storage performance test -
10 High-temperature storage performance test -
11 Overload ability test -
12 Accuracy test of state parameters -
13 SOC accuracy test -
14 Protection function test -

5 Test preparation

5.1 General

For each test, appropriate measuring instruments and equipment shall be selected and a test plan shall be formulated to minimize the uncertainty. All test parties shall formulate a written test plan based on this standard, and the following items shall be included in the test plan:

a) purpose;

b) test specification;

c) qualification of test personnel;

d) the uncertainty of result shall meet the requirements of ISO/IEC Guide 98-3;

e) requirements for measuring instruments and equipment;

f) estimation of test parameter range;

g) data acquisition plan (meeting the requirements of 5.2).

5.2 Data acquisition and recording

To meet the requirements of target errors, the data acquisition system and data recording equipment shall meet the requirements of acquisition frequency and speed, and their performance shall be superior to those of test equipment.

6 Test conditions

Unless otherwise specified, the test shall be carried out under the conditions specified in this standard:

——ambient temperature: 25℃±5℃;

——humidity of air: 5%~95%;

——electrolyte temperature: 30℃±5℃.

7 Measuring instruments

7.1 General

Measuring instruments shall be qualified according to the relevant national metrological verification regulations or relevant standards, within the validity period and meet the measurement accuracy index specified by the manufacturer.

7.2 Electrical measurement

7.2.1 Measuring range of the instrument

The range of instruments used shall be determined by the magnitude of the voltage or current to be measured, i.e., the reading shall be within the last third of the range.

7.2.2 Voltage measurement

The instruments used for measuring voltage shall be voltmeters of Grade 0.5 or higher accuracy, of which the internal resistance shall be at least 1kΩ/V.
Note: Other measuring instruments with the same accuracy may also be used for measuring the above voltage.

7.2.3 Current measurement

The instruments used for measuring current shall be ammeters of Grade 0.5 or higher accuracy.

Note: Other measuring instruments with the same accuracy may also be used for measuring the above current.

7.2.4 Electric energy measurement

The instruments used for measuring electric energy shall be instruments of Grade 0.5 or higher accuracy.

7.3 Temperature measurement

The thermometer used to measure the temperature shall have an appropriate range, its division value shall not be greater than 1℃, and the calibration accuracy shall not be less than 0.5℃.

7.4 Time measurement

The time measuring instrument shall be divided into hour, minute and second in scale and with an accuracy of not less than ±1s/h.

7.5 Signal measurement

The instrument used to measure signal changes shall be an oscilloscope with a bandwidth of not less than 40MHz and a sampling rate of not less than 1GS/s.

7.6 Gas concentration measurement

Instruments for measuring hydrogen concentration shall have an appropriate range and shall have an accuracy of not less than 5% F.S.

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Test items
5 Test preparation
6 Test conditions
7 Measuring instruments
8 Test methods
9 Test report
Annex A (Informative) Test report