Battery Pack Bottom Protection Structure for Impact Cushioning
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Solution Overview
Problem
Existing battery packs lack adequate protection against collisions and impacts, particularly at the bottom, leading to potential fire or explosion risks and compromising safety.
Innovation Solution
A box protection structure comprising a bottom protection plate, reinforcing plate, and buffer blocks that absorb and distribute impact energy, enhancing the battery pack's resistance to collisions and impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a common box structure design is used without special bottom protection, then the device complexity is reduced and manufacturing is easier, but the protection effect on the battery module is insufficient leading to fire or explosion risks
Solution Approach 1:
The bottom protection structure is segmented into multiple functional components: bottom protection plate, buffer blocks, reinforcing plate with support portions and connection portions. Each component performs a specific protective function, collectively providing comprehensive protection while maintaining manageable complexity through modular design
Solution Approach 2:
Buffer blocks are pre-installed between the battery module and bottom protection plate to absorb impact energy before it reaches the battery module. The reinforcing plate is also pre-installed to provide structural support in advance, preventing damage before it occurs
2Strength
If the bottom of the box structure is not specially protected, then the manufacturing cost and structural complexity are reduced, but the anti-collision impact strength is insufficient
Solution Approach 1:
The reinforcing plate features local quality enhancement with support portions strategically positioned at high-stress areas and connection portions at attachment points. This localized reinforcement provides maximum anti-collision strength where needed while avoiding unnecessary complexity in less critical areas
Solution Approach 2:
The bottom protection structure combines multiple materials with different properties: the bottom protection plate provides rigid support, buffer blocks provide energy absorption, and the reinforcing plate provides structural strengthening. This composite approach achieves superior anti-collision strength through material synergy
3Reliability
If only a simple carrier and container function is provided by the box structure, then the device complexity is minimized, but the protection effect is general and insufficient for preventing fire or explosion
Solution Approach 1:
The bottom protection structure serves multiple functions simultaneously: the bottom protection plate acts as a carrier and container while providing impact protection, buffer blocks provide both cushioning and structural support, and the reinforcing plate provides both structural integrity and collision resistance. This multi-functionality achieves comprehensive safety without excessive complexity
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 structure effectively reduces the risk of damage to the battery module by absorbing and distributing impact energy, ensuring the safety and integrity of the battery pack.
Implementation Method 1
buffer blocks disposed on a side of the bottom protection plate facing the battery module. The buffer blocks are disposed between the battery module and the bottom protection plate
Data Source
AI summary
A box protection structure includes a bottom protection plate, a battery module placed on the bottom protection plate, a reinforcing plate disposed on a side of the bottom protection plate facing away from the battery module, and buffer blocks disposed on a side of the bottom protection plate facing the battery module. The buffer blocks are disposed between the battery module and the bottom protection plate. The reinforcing plate includes multiple support portions and multiple connection portions which are alternately distributed and connected to each other. The multiple support portions and the bottom protection plate are disposed at intervals, the connection portions abut against the bottom protection plate, and the buffer blocks are disposed corresponding to positions of the connection portions.