ISO/TS 23625:2021 pdf download – Small craft — Lithium-ion batteries

02-21-2022 comment

ISO/TS 23625:2021 pdf download – Small craft — Lithium-ion batteries.
6.7 Lithium-ion battery connections — No electrical connections should be made directly to a lithium- ion battery that would bypass the BMS or the protection relays, unless specified by the battery system manufacturer’s instructions. 6.8 Overcurrent protection — All lithium-ion battery output circuits should have overcurrent protection in accordance with ISO 13297. 6.9 Ampere interrupting capacity (AIC) — If necessary, the lithium-ion battery bank should be subdivided into units such that the AIC rating of fusing is not exceeded. 6.10 Lithium-ion battery disconnect — The operator should be able to safely operate a lithium-ion battery system disconnect switch or switches when the batteries are in an overheating situation. The lithium-ion battery system disconnect switch should be readily accessible without reaching over the lithium-ion battery. Consider locating the lithium-ion battery disconnect outside dedicated battery enclosure. Multiple disconnect switches are recommended to prevent a dead ship in the event of a LVC/HVC occurrence. 6.11 Series and paralleling installations should comply with the lithium-ion battery manufacturer specifications. Special attention should be paid to draw even power from all batteries in a battery bank, to avoid disbalancing. Appropriate measures should be taken to allow for balancing and overcurrent protection between batteries. 6.12 Charging sources should be operated/controlled to meet the charging profile recommendations provided by the lithium-ion battery or cell manufacturer.
7 Fire protection and cell venting 7.1 Fire protection from thermal runaway — Lithium-ion batteries technologies have unique fire characteristics. See Annex A for more information. 7.2 Fire protection from external fires — Consideration should be given to installation of a fire detection system, according to ISO 9094, when batteries are installed in enclosed compartments. When the batteries are installed in spaces susceptible to fire, considerations should be given to installing batteries in containers that provide protection from an external fire. 7.3 Cell venting — Battery installations should be provided with guidance for battery compartment ventilation directly to open air to avoid concentration of gasses if cell venting occurs. Consult with the battery cell manufacturer for ventilation requirements for the battery/battery compartment. When the battery banks are installed in an enclosed habitable space, the battery bank should be installed in a (separate) container allowing for independent ventilation.

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