BS EN IEC 62932‑1:2020 pdf download – Flow battery energy systems for stationary applications Part 1: Terminology and general aspects
1 Scope This part of IEC 62932 relates to flow battery energy systems (FBES) used in electrical energy storage (EES) applications and provides the main terminology and general aspects of this technology, including terms necessary for the definition of unit parameters, test methods, safety and environmental issues. 2 Normative references There are no normative references in this document. 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: • IEC Electropedia: available at http://www.electropedia.org/ • ISO Online browsing platform: available at http://www.iso.org/obp 3.1.1 ambient temperature environmental temperature around a flow battery energy system 3.1.2 auxiliary energy energy consumed by all the auxiliary equipment and components of a flow battery and of a flow battery energy system Note 1 to entry: The equipment and components include, but are not limited to, battery management system, battery support system, fluid circulation system. 3.1.3 battery management system BMS electronic system associated with a flow battery energy system which monitors and/or manages its state, calculates secondary data, reports that data and/or controls its environment to influence the flow battery energy system’s performance and/or service life Note 1 to entry: The function of the battery management system can be fully or partially assigned to the battery pack and/or to equipment that uses flow battery energy store systems. [SOURCE: IEC 61 427-2:201 5, 3.8, modified – admitted terms “battery management unit” and “BMU” omitted, “battery” replaced by “flow battery energy system”, Notes 2 to 4 deleted.]
3.1.4 battery support system BSS auxiliary units, such as heat exchanger, ventilation system, safety system, and inert gas system, used in an FBES, and which are not stacks, or part of the fluid circulation system, power conversion system, or battery management system Note 1 to entry: The battery support system is controlled by the battery management system. 3.1.5 charge charging <of a battery> operation during which a secondary cell or battery is supplied with electric energy from an external circuit which results in chemical changes within the cell and thus the storage of energy as chemical energy Note 1 to entry: A charge operation is defined by its maximum voltage, current, duration and other conditions as specified by the manufacturer. [SOURCE: IEC 60050-482:2004, 482-05-27, modified – term “charging of a battery” separated into “charge” and “charging” with “of a battery” as the domain, and addition of the note.] 3.1.6 cold standby standby state requiring warm up before a demand to operate can be met Note 1 to entry: A cold standby state may apply to redundant or stand-alone items. Note 2 to entry: In this context “warm up” includes meeting any conditions required to operate as required (e.g. achieving the required temperature, speed, pressure). [SOURCE: IEC 60050-1 92:201 5, 1 92-02-1 1 , modified – “state” omitted from the term, and the domain, “of an item”, deleted.] 3.1.7 discharge discharging <of a battery> operation during which a secondary battery supplies electric energy to an external circuit which results in chemical changes within the cell and the release of energy as electrical energy Note 1 to entry: A discharge operation is defined by its maximum voltage, current, duration and other conditions as specified by the manufacturer.
3.1.1 0 energy efficiency useful energy output at primary POC divided by the required energy input by the FBES/FBS including all parasitic and auxiliary energy needed to run the system and evaluated during FBES/FBS operation with the same final state of charge as the initial state of charge Note 1 to entry: The energy efficiency for FBES includes necessary conversion loss of power conversion system (PCS), auxiliary enrgy required for fluid circulation system, BMS and BSS. Note 2 to entry: Efficiency is generally expressed in percentage. [SOURCE: IEC 62933-1 :201 8, 4.1 2, modified – “EES” replaced by “FBES/FBS”, Note 1 to entry replaced.] 3.1 .1 1 energy storage fluid fluid that contains active materials and flows through the battery cell, consisting of liquid, suspension or gas 3.1.1 2 end of charge limit conditions specified by the manufacturer at which a charge is (to be) terminated 3.1.1 3 end of discharge limit conditions specified by the manufacturer at which a discharge is (to be) terminated 3.1.1 4 flow cell secondary cell characterized by the spatial separation of the electrodes and the movement of the energy storage fluids Note 1 to entry: Flow battery cell includes the hybrid flow cell. 3.1.1 5 flow battery energy system FBES system to store energy consisting of FBS(s) and power conversion system(s)