Traction battery pack pressure relief device with ratchet mechanism

Abstract

A traction battery assembly includes an enclosure assembly having an interior area, and a pressure relief device having a valve member movable from a closed position to an unlocked-release position, and movable from the unlocked-release position to a locked-release position. The valve member in the closed position blocks flow through the pressure relief device from the interior area. The valve member in the unlocked-release position permits flow from the interior area. The valve member in the locked-release position permits flow from the interior area. A ratchet mechanism that holds the valve member in the locked-release position.

Dependencies are inferred from the claim text.