Analysis on Test Methods for Large Capacity Lithium-ion Battery Equipment Protected by Explosion-proof Enclosures
ZHANG Yajun
LIANG Hong
Abstract：The high-capacity lithium-ion battery equipment protected by an explosion-proof shell will generate a large amount of high-temperature smoke and combustible gas if the lithium-ion battery experiences thermal runaway,rapidly changing the pressure,temperature,and explosive gas composition inside the explosion-proof shell,causing changes in the operating environment of the equipment,requiring additional evaluation and testing.In response to the above situation,the harmful effects of thermal runaway of batteries on explosion-proof enclosures were analyzed,and a specific plan for type testing of explosion-proof enclosures was provided in combination with the requirements of GB/T 3836 and IEC 60079 standards.According to the experimental plan,two evaluation indicators were proposed,namely the rated capacity of the battery,the ratio of battery capacity(or volume)to the net volume of the explosion-proof enclosure,and the content that needs to be studied and the measures that can be taken were discussed.Inspiration and suggestions were provided for the design and explosion-proof certification of explosion-proof enclosures for this type of equipment.
Keywords：explosion-proof shelllithium-ion batteriesthermal runawayexothermic reactionpressure relief device
Publication Date：2023-12-12
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 33-37 )