17835612. COMPOSITE MATERIALS SYSTEMS FOR BATTERY HOUSINGS AND COVERS HAVING IMPROVED THERMAL PERFORMANCE simplified abstract (GM Global Technology Operations LLC)

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COMPOSITE MATERIALS SYSTEMS FOR BATTERY HOUSINGS AND COVERS HAVING IMPROVED THERMAL PERFORMANCE

Organization Name

GM Global Technology Operations LLC

Inventor(s)

Venkateshwar R. Aitharaju of Troy MI (US)

Xiaosong Huang of Novi MI (US)

COMPOSITE MATERIALS SYSTEMS FOR BATTERY HOUSINGS AND COVERS HAVING IMPROVED THERMAL PERFORMANCE - A simplified explanation of the abstract

This abstract first appeared for US patent application 17835612 titled 'COMPOSITE MATERIALS SYSTEMS FOR BATTERY HOUSINGS AND COVERS HAVING IMPROVED THERMAL PERFORMANCE

Simplified Explanation

The present disclosure is about a composite material housing for a battery pack that helps reduce or prevent thermal runaway propagation. The housing is made of a polymeric structure with an interior-facing surface and an exterior-facing surface. It includes a fire resistant material layer on the interior-facing surface and a reinforcing material layer on the exterior-facing surface. Additionally, there is a metallic layer on the exterior-facing surface that can delaminate and form insulating air gaps when exposed to high temperatures.

  • The composite material housing is designed to minimize the spread of thermal runaway in battery packs.
  • It consists of a polymeric structure with fire resistant and reinforcing material layers.
  • The exterior-facing surface has a metallic layer that can delaminate and create insulating air gaps.
  • The metallic layer forms a thermal barrier after exposure to temperatures of 500°C or higher.

Potential Applications

  • Battery packs for electric vehicles
  • Energy storage systems
  • Portable electronic devices

Problems Solved

  • Thermal runaway propagation in battery packs
  • Fire hazards in battery systems
  • Damage to surrounding components due to high temperatures

Benefits

  • Improved safety in battery packs
  • Reduced risk of fire and explosions
  • Enhanced protection for surrounding components
  • Increased reliability and lifespan of battery systems


Original Abstract Submitted

The present disclosure provides a composite material housing for a battery pack for reducing or minimizing thermal runaway propagation. The composite material housing includes a polymeric structure defining an interior-facing surface and an exterior-facing surface. The polymeric structure includes a fire resistant material layer and a reinforcing material layer, where the fire resistant material layer defines an interior-facing surface, and the reinforcing material layer defines the exterior-facing surface. The composite material further includes a metallic layer disposed along the exterior-facing surface, where in a first operational mode the metallic layer contacts the exterior-facing surface and in a second operational mode, after exposure to a thermal load of greater than or equal to about 500° C., the metallic layer at least partially delaminates from the exterior-facing surface and forms one or more insulating air gaps that define a thermal barrier.

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