Battery Case Vapor Chamber Structure for Thermal Runaway Prevention

The patent combines aluminum alloy material with vapor chamber structure to create a composite cooling system. The aluminum case provides structural strength while the vapor chamber (made of high thermal conductivity material) provides superior heat dissipation. This composite approach resolves the contradiction by integrating two materials with complementary properties - the aluminum for mechanical strength and the vapor chamber material for thermal management.

The vapor chamber utilizes phase transition of working fluid (liquid to vapor and back) to transfer heat efficiently. The working fluid evaporates at the heat source area absorbing latent heat, then condenses in the cooling area releasing heat, creating an effective heat transfer cycle. This phase transition mechanism enables the case to actively manage heat while maintaining structural integrity.

The patent merges the vapor chamber with the battery case structure itself, making the case serve dual functions: structural protection and thermal management. Instead of adding a separate vapor chamber component between cells, the case is designed with integrated vapor chamber features, reducing part count and assembly steps while maintaining large heat transfer area.

The battery case is designed to perform multiple functions simultaneously: it provides mechanical protection for the battery cells, serves as a structural component, and functions as a heat dissipation device through the integrated vapor chamber. This multi-functionality eliminates the need for separate cooling components, simplifying assembly while maximizing heat transfer efficiency.