Battery Pack Bottom Protection Structure for Impact Energy Absorption
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Solution Overview
Problem
Existing battery packs lack adequate protection against impact and collision, particularly at the bottom, leading to potential fire or explosion risks and compromising safety.
Innovation Solution
A box protection structure with a reinforced bottom protection plate and buffer blocks between the battery module and the plate, along with a reinforcing plate and support portions, to absorb and distribute impact energy effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the box structure only adopts common design without special protection at the bottom, then the device complexity is low, but the strength and protection effect of the battery module are insufficient
Solution Approach 1:
The bottom protection structure is divided into multiple functional components: bottom protection plate, buffer blocks, reinforcing plate with support portions and connection portions. Each component performs a specific function (protection, energy absorption, reinforcement) to collectively improve impact resistance 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. This beforehand cushioning approach protects the battery module from direct impact forces during collision events
2Reliability
If the bottom protection plate is not reinforced, then the manufacturing cost and device complexity are low, but the protection performance against impact and collision is insufficient
Solution Approach 1:
The bottom protection structure combines multiple materials with different properties: the bottom protection plate provides baseline protection, buffer blocks (likely polymer or foam material) absorb impact energy, and the reinforcing plate (metal or high-strength material) with support portions strengthens the overall structure. This composite approach achieves high reliability through material synergy
3Object-affected harmful factors
If buffer blocks are not disposed between the battery module and bottom protection plate, then the device complexity is low, but the impact energy transmission to the battery module is high causing damage risk
Solution Approach 1:
Buffer blocks serve as an intermediary element positioned between the bottom protection plate and the battery module. When impact occurs, the buffer blocks absorb and dissipate impact energy through deformation, preventing direct transmission of harmful forces to the battery module while maintaining structural integrity
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
Enhances the impact resistance and safety of the battery pack by reducing the transmission of impact energy to the battery module, minimizing damage and ensuring normal operation.
Implementation Method 1
the buffer blocks are disposed between the battery module and the bottom protection plate, so that the effect of buffering and absorbing the impact energy is achieved through the buffer blocks
Implementation Method 2
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
Data Source
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AI summary
A box protection structure includes a bottom protection plate (120), a battery module (500) placed on the bottom protection plate (120), a reinforcing plate (200) disposed on a side of the bottom protection plate (120) facing away from the battery module (500), and buffer blocks (300) disposed on a side of the bottom protection plate (120) facing the battery module (300). The buffer blocks (300) are disposed between the battery module (500) and the bottom protection plate (120). The reinforcing plate (200) includes multiple support portions (210) and multiple connection portions (220) which are alternately distributed and connected to each other. The multiple support portions (210) and the bottom protection plate (120) are disposed at intervals, the connection portions (220) abut against the bottom protection plate (120), and the buffer blocks (300) are disposed corresponding to positions of the connection portions (220).