GB/T 29840-2013 English PDF
Basic dataStandard ID: GB/T 29840-2013 (GB/T29840-2013)Description (Translated English): Vanadium flow battery -- Terminology Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K82 Classification of International Standard: 27.070 Word Count Estimation: 13,156 Regulation (derived from): National Standards Bulletin No. 22 of 2013 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies: vanadium redox flow battery terminology terms and definitions. This standard applies to: All all- vanadium redox flow battery. GB/T 29840-2013: Vanadium flow battery -- Terminology---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Vanadium flow battery - Terminology ICS 27.070 K82 National Standards of People's Republic of China Terminology of all vanadium flow battery Released on.2013-11-12 2014-03-07 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Issued by China National Standardization Administration ForewordThis standard was drafted 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 the National Fuel Cell and Flow Battery Standardization Technical Committee (SAC/TC342). The main drafting units of this standard. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian Rongke Energy Storage Technology Development Co., Ltd., Mechanical Engineering Industry Beijing Institute of Electrical Technology and Economics, China Electric Power Research Institute. Participated in the drafting of this standard. Beijing Puneng Century Technology Co., Ltd., China Electrical Equipment Industry Association, Tsinghua University, Chinese Academy of Sciences Research Institute, State Grid Electric Power Research Institute, Chengde Wanlitong Industrial Group Co., Ltd., etc. The main drafters of this standard. Zhang Huamin, Lu Chenyu, Wang Xiaoli, Chen Chen, Li Ying, Lai Xiaokang. Participating drafters of this standard. Yin Haitao, Wang Baoguo, Liu Zonghao, Yang Qiming, Tian Chaohe, Yan Chuanwei, Li Aikui, Zhang Yuxian, Chen Jizhong, etc. Terminology of all vanadium flow battery1 ScopeThis standard specifies the terms and definitions of all-vanadium redox flow battery terms. This standard applies to all vanadium redox flow batteries.2 Terms and definitions2.1 Vanadium flow battery; VFB An energy storage device that realizes the mutual conversion of electrical energy and chemical energy through the electrochemical reaction of vanadium ions in different valence states in the anode and cathode electrolytes. also It is called the all-vanadium flow battery system. Note. All vanadium redox flow batteries are mainly composed of power units (stacks or modules), energy storage units (electrolyte and storage tanks), and electrolyte delivery units (pipes, valves, pumps, heat exchange) And battery management system. 2.2 Ion conductive membrane Separate the positive and negative electrolytes and selectively conduct ions. 2.3 Electrolyte An ionic conductivity solution containing vanadium ions of different valences. 2.4 Bipolarplate A conductive separator that collects conduction current and separates the positive and negative electrolytes. 2.5 Collector A conductive plate that is connected to an external circuit and leads or leads current. 2.6 Electrode The place where the electrochemical reaction occurs. 2.7 Endplate Located at both ends of the stack, it is used to fix the components required by the single cells stacked together. 2.8 Celreaction The total reaction of the positive and negative reactions occurs inside the battery. 2.9 Opencircuitvoltage The battery has no voltage when the external current flows. 2.10 Charge The working process of the battery receiving electrical energy from an external circuit and converting it into chemical energy. 2.11 Discharge The working process of the battery converting chemical energy into electrical energy and outputting electrical energy to an external circuit. 2.12 Electrodearea The geometric area of the electrode where the electrochemical reaction occurs. 2.13 Active area activearea The geometric area of the electrode perpendicular to the direction of current flow. 2.14 Current density currentdensity The current passing per unit active area. Note. The current density is expressed as A/m2 or mA/cm2. 2.15 Average charging voltage The average value of the battery charging process voltage. 2.16 Averagedischargingvoltage The average value of the battery voltage during discharge. 2.17 Voltagerange The difference between the highest voltage and the lowest voltage of a single cell in a battery system. Note. All vanadium redox flow batteries use extreme difference to characterize voltage uniformity. 2.18 Leakage The phenomenon of electrolyte leakage or outflow from the stack, system pipeline and electrolyte storage tank. 2.19 Hydrogen evolution The phenomenon in which hydrogen is released from the surface of the electrode or bipolar plate during battery charging. 2.20 Cycling Under specified conditions, the process of charging (discharging) the battery after discharge (charging) is followed by discharging (charging). 2.21 Battery structure 2.21.1 Single cell singlecel The basic unit of an all-vanadium flow battery is mainly composed of a set of positive and negative electrodes and an ion-conducting membrane that separates the electrodes. 2.21.2 Stack A combination with multiple tubes and uniform current output fastened by multiple single cells in a superimposed manner. 2.22.10 Battery system energy efficiency systemenergyefficiency When the battery is charged and discharged at a constant power, the energy output to the inverter accounts for the percentage of the energy input to the battery. 2.22.11 Battery system rated energy efficiency systemratedenergyefficiency The energy efficiency of the battery system measured when the battery is running at rated power. 2.22.12 Electrolyteutilization Under specified conditions, the ratio of actual discharge watt-hour capacity to theoretical discharge watt-hour capacity when the battery is working. 2.22.13 Chargeterminationcondition The conditions specified by the manufacturer to characterize the termination of the battery charging process, such as 100% SOC or maximum voltage. 2.22.14 Discharge termination condition The conditions specified by the manufacturer to characterize the termination of the battery discharge process, such as 0% SOC or minimum voltage. 2.22.15 Self-discharge A phenomenon in which the energy of the battery does not enter the external circuit through discharge but is lost in other forms. 2.22.16 Overloadability The ability of a battery to discharge multiple times the rated power under specified conditions. 2.22.17 Response time The time for a battery to change from a stable state to another stable state under normal operating conditions. 2.22.18 Auxiliary energy consumption parasiticloss The energy that must be provided to auxiliary machinery and equipment in order for the battery to work continuously under stable operating conditions. Note. It mainly includes circulating pumps, electric control equipment, ventilation equipment, etc. 2.22.19 Overcharge The charging continues after the battery is charged to the charge cut-off condition. 2.22.20 Overdischarge The discharge continues after the battery is discharged to the discharge cut-off condition. 2.22.21 Short-circuit current The maximum current that flows through the battery when a point in the circuit is short-circuited. 2.22.22 Environment temperature The temperature of the surrounding medium when the battery is working. 2.22.23 Cycle life Under certain charge-discharge cut-off conditions, the battery's watt-hour capacity decays to 60% of the rated watt-hour capacity. Number of rings. Note. The electrolyte and stack are not replaced. 2.22.24 Storagelife The storage time of the battery under the specified conditions. During the storage period, the battery has the specified performance. 2.23 Battery working mode 2.23.1 Constant current charge The charging current is maintained at a constant value. 2.23.2 Constant voltage charge The voltage between the battery collector plates is maintained at a constant value for charging. 2.23.3 Constant power charge The power is maintained at a constant value for charging. 2.23.4 Floatingcharge A charging mode where the battery is connected in parallel with a constant voltage DC power supply and a load to maintain the battery close to a fully charged state for ready use. 2.23.5 Pulse currentcharging The mode of charging with pulse current. 2.23.6 Quickcharge Use a current or voltage larger than the rated value (for special designs) to accelerate the charging mode in a short time. 2.23.7 Constant current discharge The current remains constant discharge. 2.23.8 Constant resistance discharge constantresistancedischarge The load resistance maintains a constant discharge. 2.23.9 Constant power discharge The power remains constant discharge. 2.23.10 Alternate discharge Discharging with different current (or load resistance) values alternately. 2.23.11 Pulse current discharge The mode of discharging with pulse current. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 29840-2013_English be delivered?Answer: Upon your order, we will start to translate GB/T 29840-2013_English as soon as possible, and keep you informed of the progress. 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