Battery Pack Exhaust Passage and Cooling for Thermal Runaway

The patent applies preliminary action by pre-configuring exhaust passages, cooling channels, and insulation structures within the battery pack housing before thermal runaway occurs. These structures are designed in advance to automatically activate when temperature thresholds are reached, enabling proactive protection rather than reactive response. The exhaust passages are pre-positioned to channel gas flow, cooling channels are pre-routed for thermal management, and insulation materials are pre-placed to contain heat, all creating a ready-to-activate protection system that improves thermal runaway protection performance without requiring complex real-time control mechanisms.

The patent implements self-service through automatic thermal response mechanisms that activate without external control. When temperature sensors detect thermal runaway conditions, the system automatically triggers cooling fluid flow through pre-configured channels, activates exhaust mechanisms to release gas through designated passages, and engages insulation barriers. This self-activating protection system eliminates the need for complex external control systems while maintaining high protection performance, as the battery pack's own thermal characteristics drive the protection response.

The patent merges multiple protection functions into integrated structures within the battery pack housing. The exhaust passages are combined with structural support elements, cooling channels are integrated into the housing walls, and insulation materials are incorporated into existing structural components. This merging approach allows the system to achieve high thermal runaway protection performance through unified multi-functional structures rather than separate dedicated components, thereby improving protection while minimizing the increase in device complexity.

The patent applies universality by designing housing components that serve multiple functions simultaneously. The housing structure provides mechanical support, thermal insulation, and gas exhaust pathways. Cooling channels serve both structural reinforcement and thermal management functions. Insulation materials provide both thermal barrier and structural integrity. This multi-functionality allows the system to achieve comprehensive thermal runaway protection without adding dedicated separate components for each function, thus improving protection performance while controlling device complexity.

The patent applies local quality by creating localized exhaust passages only in specific areas where gas accumulation is most critical, rather than uniformly spacing the pressure relief side throughout the entire chamber. The exhaust passages are strategically positioned at locations where thermal runaway gas generation is most likely to occur, providing effective gas discharge capability at targeted locations without requiring uniform increased spacing across the entire battery pack volume. This localized approach improves gas discharge capability while minimizing the overall volume increase.

The patent utilizes another dimension by routing exhaust passages through three-dimensional pathways within the housing structure rather than requiring increased linear spacing. The exhaust passages can traverse through walls, utilize vertical space, and follow complex spatial routes that efficiently channel gas from the cell group to external discharge points without requiring proportional increases in the overall battery pack volume. This dimensional approach to exhaust passage design improves gas discharge capability while maintaining compact packaging.