Battery Box Buffer Structure for Side Collision Protection
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Solution Overview
Problem
Batteries are prone to damage and reduced safety and reliability when subjected to collisions or scratches on their outer peripheral sides, affecting their operating performance and service life.
Innovation Solution
A battery design incorporating a buffer structure fixedly connected to the box, which protrudes out of the side wall to absorb collision energy, reducing the force transmitted to the box and enhancing safety and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery box is made with basic protective structure, then the manufacturing cost is low, but the safety and reliability when subjected to collision are poor
Solution Approach 1:
The patent applies beforehand cushioning by designing a buffer structure that protrudes from the battery box before collision occurs. This buffer structure includes a buffer portion and connecting portion that can deform to absorb collision energy, protecting the battery cells and box from direct impact forces.
Solution Approach 2:
The buffer structure is segmented into distinct functional parts: a buffer portion for energy absorption and a connecting portion for structural attachment. This segmentation allows each part to be optimized for its specific function while maintaining overall structural integrity.
2Reliability
If a buffer structure is added to protect against collision, then the safety performance is improved, but the volume of the battery increases
Solution Approach 1:
The buffer structure is designed with local quality by positioning it specifically at the outer peripheral side of the battery box where collisions are most likely to occur. The buffer portion protrudes locally from the box rather than adding comprehensive protective layers throughout the entire battery structure.
Solution Approach 2:
The buffer structure provides partial protection by focusing on the most vulnerable areas of the battery box. The buffer portion extends only as far as necessary to absorb typical collision energies, avoiding excessive material usage and volume increase.
3Reliability
If the buffer structure is designed with larger buffer space for better energy absorption, then the collision protection is improved, but the material usage and weight increase
Solution Approach 1:
The buffer structure utilizes parameter changes through its deformable design. The buffer portion can change its shape and density during collision, transforming kinetic energy into deformation energy. This allows effective energy absorption with minimal material mass compared to rigid protective structures.
Solution Approach 2:
The buffer structure employs composite material characteristics by combining rigid connecting portions for structural attachment with more compliant buffer portions for energy absorption. This composite approach optimizes the weight-to-protection ratio by using different material properties in different functional zones.
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 buffer structure effectively mitigates damage to the battery box by absorbing collision energy, improving safety and extending the battery's service life while maintaining structural integrity.
Implementation Method 1
the buffer structure can absorb part of the collision energy, so that the force transmitted to the box becomes smaller
Implementation Method 2
a buffer space provided for deformation of the buffer portion is formed between the buffer portion and the side wall of the box
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A battery (100) and a vehicle (1000) are provided. The battery (100) includes: at least one battery cell (17), a box (1), and a buffer structure (23). The battery cell (17) is arranged in the box (1). The buffer structure (23) is fixedly connected to the box (1), and the buffer structure (23) protrudes out of a side wall of the box (1).