Vehicle Battery Pack Mounting Structure Impact Detachment
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Solution Overview
Problem
Existing structures for mounting electricity storage packs on vehicles fail to adequately protect the packs from damage when impacts are applied from outside high positions, leading to potential breaking or crushing.
Innovation Solution
A support structure with screw insertion holes and thin-walled portions that allow the electricity storage pack to move forward and detach from the support member upon impact, canceling the fixed state and absorbing impact energy to prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electricity storage pack is fixed to the support member, then the pack is securely mounted on the vehicle, but the pack cannot move forward to absorb impact energy when struck from outside high positions
Solution Approach 1:
The patent applies preliminary action by pre-forming the screw insertion hole with a specific structure that includes a first portion (for initial screw engagement) and a second portion (for screw withdrawal). This pre-configured hole structure enables the electricity storage pack to automatically detach when subjected to impact from outside high positions, allowing the pack to move forward and absorb impact energy while maintaining secure mounting during normal operation
Solution Approach 2:
The patent implements dynamics by designing the screw insertion hole to transition from a fixed state to a movable state. The hole's dual-portion structure allows the screw to be initially inserted and engaged (first portion), then withdrawn to the second portion when needed, enabling the electricity storage pack to dynamically adjust its mounting state based on impact conditions, thereby protecting against damage while maintaining secure installation
2Object-affected harmful factors
If the screw insertion hole is formed with a specific structure allowing screw withdrawal, then the pack can detach to absorb impact, but the mounting structure becomes more complex
Solution Approach 1:
The patent applies local quality by creating a screw insertion hole with non-uniform structure - the first portion has specific dimensions for screw engagement, while the second portion has different dimensions that allow screw withdrawal. This localized structural variation in the hole provides the detachment function without requiring complex additional components, achieving impact protection through a relatively simple modified hole design
Data Source
AI summary
A structure for mounting a battery pack on a vehicle includes a mount for supporting the battery pack. The battery pack is fixed to an upper side of the mount by bolts. The battery pack is disposed on a rear side of a rear seat. The battery pack includes screw holes through which the bolts are inserted. The screw holes have closed shapes. The screw holes are long in a front-rear direction and formed so that the battery pack moves when an impact is applied on it. A fixed state of the battery pack by the bolts is canceled after movement of the battery pack.