Battery system with fire extinguishing pump

Abstract

A battery system includes: a battery pack including a housing and a plurality of battery cells accommodated within the housing; and a fire extinguishing pump including: a chamber having a first portion and a second portion separated from each other by a movable barrier member between the first portion and the second portion; a fire extinguisher material in the first portion; an explosive material in the second portion; an outlet in the first portion of the chamber configured to release fire extinguisher material toward at least one of the battery cells; and an explosion trigger system configured to cause the explosive material to explode in response to venting gas being ejected from at least one of the battery cells to move the movable barrier member to push at least some of the fire extinguisher material through the outlet.

Dependencies are inferred from the claim text.