Abstract: The present disclosure provides a cover element for a battery pack. The cover element is generally planar and formed from a silicate mineral. The cover element is configured to be sealed to a periphery of the battery pack and attached to a top surface of arrays which form the battery pack. The cover element includes cover apertures configured to be aligned with vent apertures in the top surface of the arrays and to form a seal around the vent apertures, providing a fluid pathway from the cover apertures. The cover element may be formed of mica and include terminal apertures aligned with array terminals. A battery pack (250) incorporating the cover element and a vehicle containing such a battery pack are also disclosed.

Abstract: Provided herein is a battery array comprising a housing with a base and sidewalls shaped to receive and house battery cells. The battery cells within the battery array are organized into cell groups, with an insulating layer positioned between each group. A sheet of silicate material, which includes a frangible portion above each cell group, covers the battery cells. A vent plate, positioned on top of the sheet of silicate material, encloses the sheet substantially between the vent plate and the battery cells. The vent plate is equipped with vent channels that align with the respective frangible portions of the sheet of silicate material.