US US20260221552A1
A cover for a battery system is structured to be attachable to a housing of a battery pack to be incorporated into the battery system. The housing contains battery cells and/or a battery module positioned in cavities of the housing. The cover includes thermal event by-product flow reflector(s) extending from the cover above each housing cavity. After initiation of a thermal event in a battery cell/module contained in a housing cavity, by-products of the thermal event flow along the cover toward the by-product flow reflector(s). When the by-products impinge upon the flow reflector(s), the by-products are redirected back toward the housing cavity where the thermal event occurred. This helps protect undamaged battery cells/modules located in adjacent housing cavities from the thermal event by-products. A method of controlling a flow of thermal event by-products in a battery system is also disclosed.
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