Rear-Side Battery Pack Structure With Integrated Impact and Airflow Path
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Solution Overview
Problem
Existing vehicle rear-side structures do not effectively protect battery packs from the impact of collisions while also serving as efficient air channels for cooling the battery stacks.
Innovation Solution
A vehicle rear-side structure that includes side frames and a rear-end-collision impact reducer, which is positioned above and between the side frames to absorb and redirect the impact of a collision, while also allowing air to flow through for cooling the battery stack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a separate air channel component is added to the rear-side structure, then cooling efficiency is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The air channel is integrated into the rear-side structure by forming it as a through-hole in the rear-end-collision impact reducer. This merging of the air channel function into an existing structural component achieves effective battery cooling while avoiding the complexity and cost increases associated with adding a separate air channel component.
2Reliability
If multiple separate components are used for impact protection and air channeling, then functional reliability is improved, but manufacturing cost and assembly complexity increase
Solution Approach 1:
The rear-end-collision impact reducer is designed with a through-hole that integrates both impact protection and air channeling functions. This single component design maintains functional reliability by ensuring proper air flow for battery cooling while providing robust rear-end collision protection, thereby reducing manufacturing cost and simplifying assembly compared to using multiple separate components.
Solution Approach 2:
The rear-end-collision impact reducer serves multiple functions: it provides rear-end collision protection, acts as a structural support element, and functions as an air channel for battery cooling. This multi-functionality reduces the total number of components needed, lowering both manufacturing cost and assembly complexity while maintaining reliable impact protection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed structure effectively reduces the impact of collisions on the battery pack, simplifies the configuration by integrating the impact reducer with the air channel, and reduces the number of components, thereby lowering costs and enhancing protection.
Implementation Method 1
The rear-end-collision impact reducer is configured to allow air, which is to be sent to a battery stack included in the battery pack, to flow through the rear-end-collision impact reducer
Data Source
AI summary
A vehicle rear-side structure is configured to ease an impact applied onto a battery pack of a vehicle upon an occurrence of a collision. The vehicle rear-side structure includes side frames and a rear-end-collision impact reducer. The side frames extend in a front-rear direction of the vehicle and are disposed at positions at which the side frames sandwich the battery pack therebetween in a widthwise direction of the vehicle. The rear-end-collision impact reducer is disposed between and above the side frames at a rear side of the battery pack. The rear-end-collision impact reducer is configured to allow air, which is to be sent to a battery stack included in the battery pack, to flow through the rear-end-collision impact reducer.