Electric Vehicle Battery Mounting Clash-Proof Block
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Solution Overview
Problem
Existing battery mounting structures for electric vehicles face challenges in maintaining the battery box's position during crashes, leading to potential damage and increased weight and cost due to the need for larger fixing portions.
Innovation Solution
A structure comprising a body member, a battery case with a supporting member projected outward, and clash-proof blocks connecting the battery case to the body member, which includes lateral-end and front-end supporting members made of iron, and clash-proof blocks to prevent the battery case from moving during impacts, thereby maintaining the battery's position and reducing weight and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the front fixing portions and rear fixing portions fix the battery box to the side frames by conventional means, then the battery box can be mounted, but the battery box moves forward during front end impact due to inertia
Solution Approach 1:
The fixing system is divided into multiple independent fixing portions (front fixing portions and rear fixing portions) that are distributed along the battery box. During crash, these segmented fixing portions work together to restrain battery movement more effectively than a single large fixing structure, reducing the kinetic energy impact on any single point.
Solution Approach 2:
The invention extends the fixing structure in the longitudinal direction by adding rear fixing portions to the conventional front fixing portions. This dimensional extension creates a longer restraint baseline that more effectively counteracts the forward inertia of the battery during front end impact, improving position stability without requiring larger individual fixing portions.
2Reliability
If the front and rear fixing portions are increased in size to prevent battery movement during crash, then the battery position stability improves, but the weight and cost increase
Solution Approach 1:
Instead of uniformly increasing the size of all fixing portions, the invention applies fixing structures selectively at critical locations (front and rear ends of the battery box). This partial action approach provides sufficient crash resistance by restraining battery movement at the extremes, avoiding the weight penalty of oversized fixing portions throughout the entire battery structure.
Solution Approach 2:
The invention achieves improved crash resistance by extending the fixing structure along the longitudinal dimension (adding rear fixing portions) rather than increasing the cross-sectional size of individual fixing portions. This dimensional strategy provides better battery restraint during crash while maintaining lighter individual component sizes, thus reducing overall weight.
3Reliability
If the front and rear fixing portions are increased in size to prevent battery movement during crash, then the battery position stability improves, but the manufacturing cost increases
Solution Approach 1:
The invention implements fixing portions only at the critical front and rear locations of the battery box rather than uniformly throughout. This partial action approach provides sufficient crash resistance at lower manufacturing cost by concentrating fixing resources where they are most needed to prevent battery movement during impact.
Solution Approach 2:
The invention achieves improved crash resistance by extending the fixing structure along the longitudinal dimension (adding rear fixing portions) rather than increasing the cross-sectional size or complexity of individual fixing portions. This dimensional strategy provides better battery restraint while using simpler, more cost-effective fixing components.
Data Source
AI summary
A structure for mounting a battery onto an electric vehicle comprises: a body member forming a body of the electric vehicle; a battery case containing a battery; a supporting member, which is projected outward from the battery case and is disposed under the body member, fixed to a bottom of said battery case; and a clash-proof block connecting between the battery case and the body member.