Bipolar flat cell for use in lithium-ion battery utilized as energy storage unit of electric drive assembly of e.g. hybrid vehicle, has opening, and shell bottom formed in region of recess corresponding to housing frame edge

摘要

The cell (2) has a housing side part (8), a cladding metal sheet (9), an opening, and a housing frame (7) formed by a housing. The housing is provided with a pressure relief device. The housing side part is formed as shell-shaped, and the housing frame comprises a recess (16) at a housing frame edge (15). A height of the housing frame edge is reduced through the recess, and a shell bottom is formed in a region of the recess corresponding to the housing frame edge. A set of arc-shaped raised formations is attached at another shell bottom (18). An independent claim is also included for a battery comprising a pole plate.