Battery cell containment and venting

摘要

A battery has a casing holding plural cells and a mesh wrapped around the cells to contain pieces of an exploding cell within the casing. To prevent overpressurization of the casing from the gas emitted by an exploding cell, a pressure relief feature is provided that allows gas to pass through battery casing.

主权项

1. A battery, comprising:
at least one battery cell, the battery cell including a first end defining a closed periphery, the battery cell including a second end defining a closed periphery, the first and second ends being spaced from each other and being parallel to each other but not being coplanar with each other, the battery cell including an enclosing wall connecting the ends and contiguous to the closed peripheries entirely around the closed peripheries; an outer casing holding the battery cell; and a mesh at least one of overmolded onto at least part of the enclosing wall and embedded onto at least part of the enclosing wall, the mesh being porous to gas emitted by the battery cell such that the gas can pass through the mesh to the casing.