Internal battery thermal management system for secondary batteries

This invention describes a method to keep rechargeable batteries, especially lithium-ion types, at an optimal temperature. It achieves this by embedding small, sealed containers filled with a special material directly inside the battery, near its core components. This material changes phase, like melting or freezing, to absorb or release heat, preventing the battery from getting too hot or too cold and extending its lifespan.

Why it matters: Since 2018, the increasing energy density and faster charging demands for lithium-ion batteries have amplified the need for precise internal thermal management. Advances in battery manufacturing or phase change material development could now make integrating these sealed elements more cost-effective or efficient.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedCustom sealed elements, battery manufacturing, PCM selection

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