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NB/T 11203-2023 PDF English

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NB/T 11203-2023: Technical specification of carbon plastic bipolar plate for vanadium flow battery
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NB/T 11203-2023: Technical specification of carbon plastic bipolar plate for vanadium flow battery


---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/NBT11203-2023
NB ENERGY INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.220.20 CCS K 84 Technical Specification of Carbon Plastic Bipolar Plate for Vanadium Flow Battery ISSUED ON: MAY 26, 2023 IMPLEMENTED ON: NOVEMBER 26, 2023 Issued by: National Energy Administration

Table of Contents

Foreword ... 3 1 Scope ... 4 2 Normative References ... 4 3 Terms and Definitions ... 4 4 General Requirements ... 5 4.1 Test conditions and requirements ... 5 4.2 Structural dimensions ... 5 4.3 Electrical properties ... 5 4.4 Mechanical properties ... 5 4.5 Durability ... 6 5 Test Methods ... 6 5.1 Test instruments and precision ... 6 5.2 Test method ... 7 6 Packaging and Marking ... 8 6.1 Packaging ... 8 6.2 Marking ... 8

Foreword

This Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for Standardization – Part 1: Rules for the Structure and Drafting of Standardizing Documents. Please note some contents of this Document may involve patents. The issuing agency of this Document shall not assume the responsibility to identify these patents. This Document was proposed by China Electrical Equipment Industry Association. This Document shall be under the jurisdiction of National Technical Committee on Flow Battery in Energy Industry of Standardization Administration of China (NEA/TC 23). Drafting organizations of this Document: Hunan Yinfeng New Energy Co., Ltd; National Institute of Clean-and-Low-Carbon Energy, Hunan Agricultural University; Beijing Institute of Electrical Engineering and Economics, Mechanical Industry; Leshan V-Liquid Energy Co., Ltd.; Sichuan Xingming Energy Environmental Protection Technology Co., Ltd.; Shaanxi Huayin Technology Co., Ltd.; Institute of Metal Research, Chinese Academy of Sciences; Anhui Leoch Power Supply Co., Ltd.; China Quality Certification Center; Weihai Nanhai Carbon Materials Co., Ltd.; and Chengde Xinxin Vanadium Titanium Energy Storage Technology Co., Ltd. Chief drafting staffs of this Document: Wu Xuewen, Liu Qinghua, Wu Xiongwei, Fan Yongsheng, Zhang Liang, Chen Jijun, Zhang Zhongyu, Liu Xinyun, Pu Nianwen, Liu Jianguo, Dong Jie, Wang Gang, Han Jianyang, and Liu Zongyu. Technical Specification of Carbon Plastic Bipolar Plate for Vanadium Flow Battery

1 Scope

This Document specifies the general conditions, test methods, marking and packaging of carbon-plastic composite bipolar plate for vanadium flow battery.

2 Normative References

The provisions in following documents become the essential provisions of this Document through reference in 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) is applicable to this Document. GB/T 191-2008 Packaging - Pictorial Marking for Handling of Goods GB/T 8719-2022 General rule for packing, marking, storage, transport and quality certificates of carbonaceous material and products GB/T 29840-2013 Vanadium flow battery - Terminology JB/T 7758.2-2005 Specifications of flexible graphite sheets NB/T 42007-2013 Bipolar Plate for Vanadium Flow Battery - Test Method NB/T 42080-2016 Ion conductive membrane for Vanadium flow battery - Test method NB/T 42082-2016 Vanadium flow battery - Test method for electrode

3 Terms and Definitions

For the purposes of this Document, the terms and definitions given in GB/T 29840-2013 and the following apply. 3.1 Carbon-plastic composite bipolar plate A bipolar plate for a vanadium flow battery made of carbon and plastic (polymer or polymer derivative).

4 General Requirements

4.1 Test conditions and requirements --- Temperature: 25℃±5℃; --- Pressure: 86 kPa~106 kPa; --- Air humidity: 10%~96%. 4.2 Structural dimensions 4.2.1 Thickness uniformity requirements The thickness dimensional deviation shall comply with the following provisions: when the average thickness d≤0.4 mm, the difference between the maximum and minimum thickness values ≤6%d; when 0.4< d≤1.0 mm, the difference between the maximum and minimum thickness values ≤5%d; when d >1.0 mm, the difference between the maximum and minimum thickness values ≤4%d. See 5.2 a) for the test method. 4.2.2 Dimensional deviation Dimensional deviation in length and width shall be ≤ ±1 mm. Measure the length and width of the material with a steel ruler. The specific dimensional requirements of products of different specifications shall be negotiated by the supplier and the purchaser. 4.3 Electrical properties Volume resistivity shall be ≤0.15 Ω·cm, and the surface resistance in the direction perpendicular to the bipolar plate panel shall be ≤0.1 Ω·cm2; the pressure range is 0.5 MPa~0.6 MPa, and the contact resistance with the carbon felt surface shall be ≤0.1 Ω·cm2. See 5.2 b) for the test method. 4.4 Mechanical properties 4.4.1 Bending strength requirements Bending strength shall be ≥20 MPa. See 5.2 c) for the test method. 4.4.2 Tensile strength requirements Tensile strength shall be ≥10 MPa. See 5.2 d) for the test method. 4.4.3 Compressive strength requirements Compressive strength shall be ≥20 MPa. See 5.2 e) for the test method. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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