BATTERY CONTAINING A SWELLING LAYER Russian patent published in 2022 - IPC H01M10/04 H01M10/58 H01M10/625 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering, namely, to a battery containing a cross-linked swelling layer selected from a coating and a self-supporting film or sheet, and the layer is formed from a curable swelling composition containing: (a) a resin component containing one or more oligomeric or polymer compounds having multiple functional groups; (b) optionally a curing agent having multiple functional groups that react with functional groups of an oligomeric or polymer compound of a resin component (a); and (c) a compound providing an expanding gas during thermal decomposition; moreover, compounds (a)-(c) differ from each other. Another purpose of this invention is to protect the product containing the battery and its users from the fire hazards associated with thermal breakdown, for which a cross-linked swelling layer is applied to the part of the product adjacent to the battery, between the battery and the product, as well as a method for protection the battery or the product containing the battery from fire or to reduce or prevent thermal breakdown of the battery.

EFFECT: improving the reliability of battery protection from thermal breakdown and preventing the spread of fire for a long period of time.

15 cl, 6 ex, 5 dwg