Standard No.:	NB/T 42040-2014
English Name:	General specification for vanadium flow battery
Chinese Name:	全矾液流电池通用技术条件
Professional Classification:	NB    Professional Standard - Energy
Source Content Issued by:	National Energy Administration
Issued on:	2014-06-29
Implemented on:	2014-11-1
Status:	abolished
Abolished on:	2018-08-24
Target Language:	English
File Format:	PDF
Word Count:	4500 words
Translation Price(USD):	214.0
Delivery:	via email in 1 business day

NB/T 42040-2014 General specification for vanadium flow battery 1 Scope This standard specifies the technical requirements, test methods, inspection rules, marking, instructions for use, packaging, transportation, and storage of vanadium flow battery system (hereinafter referred to as battery system). This standard is applicable to vanadium flow battery systems of various specifications. 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 2408-2008 Plastics - Determination of burning characteristics - Horizontal and vertical test GB/T 9969-2008 General principles for preparation of instructions for use of industrial products GB/T 29840-2013 Vanadium flow battery - Terminology 3 Terms and definitions For the purposes of this standard, the terms and definitions given in GB/T 29840-2013 and the following apply. 3.1 capacity recovery ability ability to recover the energy capacity of a battery to at least 80% of its rated energy capacity through operation when its energy capacity decays to below 80% of the rated energy capacity Note: This refers to the operation without adding new electrolyte or replacing the existing one. 3.2 unit battery system independent assembly composed of one or more modules connected through circuits, which realizes the charging and discharging functions by being connected to a converter 4 Technical requirements 4.1 Working environment The working environment of the battery system is as follows: ——Temperature: 0℃~40℃; ——Altitude: ≤1,000m; ——Humidity of air: 5%~95%. 4.2 Appearance When the battery system is inspected according to 5.3, the appearance shall be kept clean, flat, free of deformation, free of electrolyte precipitation and leakage, and the marking shall be clear and intact. 4.3 Rated energy capacity The battery system shall be tested according to 5.4, and the energy capacity shall not be lower than the rated value specified by the manufacturer. 4.4 Rated power The battery system shall be tested according to 5.5, and the power shall not be lower than the rated value specified by the manufacturer. 4.5 System rated energy efficiency The battery system shall be tested according to 5.6, and the system rated energy efficiency shall meet the following requirements: ——For a battery system with a rated power less than 10kW, the rated energy efficiency shall be greater than 50%; ——For a battery system with a rated power of 10kW~100kW, the rated energy efficiency shall be greater than 60%; ——For a battery system with a rated power greater than 100kW, the rated energy efficiency shall be greater than 65%. 4.6 Capacity retention ability The battery system shall be tested according to 5.7, and the energy capacity attenuation rate shall be less than 10%. 4.7 Low-temperature storage performance The battery system shall be tested according to 5.8, and the discharge energy capacity shall not be less than 95% of the rated energy capacity. 4.8 High-temperature storage performance The battery system shall be tested according to 5.9, and the discharge energy capacity shall not be less than 95% of the rated energy capacity. 4.9 Over charge protection The battery system shall be provided with over charge protection measures. After being tested according to 5.10, the battery system shall work normally. 4.10 Over discharge protection The battery system shall be provided with over discharge protection measures. After being tested according to 5.11, the battery system shall work normally. 4.11 Charge characteristic curves The battery system shall be tested according to 5.12, and the following reference charge characteristic curves shall be provided: a) Charge energy capacity-time curve; b) Charge energy capacity-SOC curve; c) Battery voltage-time curve. 4.12 Discharge characteristic curves The battery system shall be tested according to 5.13, and the following reference discharge characteristic curves shall be provided: a) Discharge energy capacity-time curve; b) Discharge energy capacity-SOC curve;

Foreword II 1 Scope 2 Normative references 3 Terms and definitions 4 Technical requirements 5 Test methods 6 Inspection rules 7 Marking and instructions for use 8 Packaging, transportation and storage