Battery Pack Crossbeam Connection With Inclined Plates for Stability
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Solution Overview
Problem
The existing connection structure between a vehicle's battery pack and crossbeam is prone to out-of-plane deformation due to the perpendicular orientation of rectangular connection members, leading to instability.
Innovation Solution
A connection structure featuring first and second inclination plates arranged along the left-right direction, with one end connected to the crossbeam and the other to the battery pack, ensuring the force from the stringers generates in-plane deformation, thereby enhancing stability and reducing out-of-plane deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If rectangular connection members are used to connect the battery pack and crossbeam, then the connection structure is simple and easy to manufacture, but out-of-plane deformation occurs in the connection portion leading to instability
Solution Approach 1:
The connection member changes its orientation parameter from perpendicular (0 degrees) to inclined (intersecting), which fundamentally alters how forces are transmitted. This parameter change transforms the deformation mode from out-of-plane to in-plane, resolving the stability issue while keeping the basic rectangular structure for ease of manufacture
Solution Approach 2:
The connection member is positioned asymmetrically with respect to the crossbeam, with one end closer to one stringer than the other. This asymmetric positioning creates the intersecting relationship that generates in-plane deformation, converting the symmetric but unstable perpendicular connection into an asymmetric but stable inclined connection
2Device complexity
If the side plate of the connection member is positioned perpendicular to the stringer force, then the connection structure is straightforward, but out-of-plane deformation occurs causing instability
Solution Approach 1:
The side plate orientation parameter is changed from perpendicular to inclined, creating an intersecting relationship with the stringer. This single parameter change transforms the deformation characteristics from unstable out-of-plane bending to stable in-plane deformation, maintaining structural simplicity
Data Source
AI summary
A connection structure of a battery pack and a vehicle body including a left stringer, a right stringer, and a crossbeam, includes at least a first connection member configured to connect the battery pack and the crossbeam. The first connection member includes a first inclination plate and a second inclination plate arranged at intervals along a left-right direction, the first inclination plate is positioned at a side of the second inclination plate to be close to the right stringer, one end of each of the first inclination plate and the second inclination plate is connected to the crossbeam, and the other end of each of the first inclination plate and the second inclination plate is connected to the battery pack, a first/second extension plane of the first/second inclination plate that is the closest to the right/left stringer intersects the right/left stringer.