PORTABLE ELECTRICAL ENERGY STORAGE DEVICE WITH IN-SITU FORMABLE FLUID CHANNELS

摘要

An electrical energy storage device for powering portable devices such as vehicles or consumer electronics includes barriers to minimize migration of thermal energy and propagation of combustion in the rare event that electrical energy storage cells fail, burst and ignite. Thermal energy absorbing materials are contained within the electrical energy storage device. Sacrificial members are provided within the thermal energy absorbing materials. In-situ channels are formed within the thermal energy absorbing materials when the sacrificial members thermally decompose.

主权项

1. A method of manufacturing a portable electrical energy storage device, the method comprising:
providing, within a portable electrical energy storage device housing, a first electrical energy storage cell module including a plurality of electrical energy storage cells; providing within the portable electrical energy storage device housing and adjacent the first electrical energy storage cell module, a second electrical energy storage cell module including a plurality of electrical energy storage cells; providing a thermal energy absorbing material in the housing; and providing a sacrificial member within the housing and within the thermal energy absorbing material, the sacrificial member formed of a material that does not thermally decompose when exposed to an environment below a first temperature and thermally decomposes when exposed to an environment at a second temperature greater than the first temperature.