Battery Pack Wall Assembly for Heat Diffusion and Particle Shielding

The protection sheet is designed to cover only specific high-risk areas of the carrier plate where thermal events are most likely to occur, rather than providing uniform coverage across the entire surface. This localized protection approach reduces material usage and weight while maintaining adequate protection where it is most needed.

Instead of providing complete coverage of the carrier plate, the protection sheet applies partial coverage concentrated on critical zones. This partial action principle allows the system to achieve sufficient protection against abrasive particles without the excessive material requirement of full coverage.

The protection sheet is constructed from composite materials that combine high abrasion resistance properties with adequate thermal conductivity. This allows the sheet to provide ballistic shielding against abrasive particles while still permitting heat diffusion to occur, resolving the contradiction between protection and heat management.

The thickness and material composition of the protection sheet are optimized to specific parameter ranges that balance ballistic shielding capability with heat diffusion requirements. By carefully selecting material parameters, the design achieves both protection against particles and acceptable thermal performance.

Heat diffusion is enhanced locally at critical areas through strategic placement of high-conductivity materials or heat sinks, rather than uniformly increasing the entire carrier plate area. This localized thermal management approach improves heat diffusion performance without proportionally increasing the overall plate size.

Heat diffusion is improved by introducing intermediary thermal management components such as heat sinks, thermal vias, or conductive pathways that enhance heat transfer without requiring an increase in the carrier plate's geometric area. These intermediaries act as heat conduits that improve thermal performance within the existing footprint.

Safety measures are built into the battery pack design from the outset, including the protection sheet and carrier plate thermal management system, rather than adding them as afterthoughts. This preliminary incorporation of safety features allows high energy density to be achieved while maintaining operational safety through pre-planned protective mechanisms.

The design converts potentially harmful thermal events into manageable situations by using the carrier plate and protection sheet system to contain and diffuse heat from thermal runaway events. This transforms the harmful effect of high energy density into a controlled thermal management challenge that can be addressed through the designed protective structures.