EV Platform Lattice Frame for Lightweight Rigidity
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Solution Overview
Problem
Conventional electric vehicles face limitations in mileage due to battery inefficiency, and attempts to reduce weight through material substitution, such as using plastics or aluminum, result in reduced rigidity and increased CO2 emissions, affecting ride quality and steering performance.
Innovation Solution
A platform structure for electric vehicles featuring a lattice frame configuration with intersecting pipes forming a vertical double structure, utilizing brackets to couple pipes in various directions for enhanced rigidity and reduced manufacturing time and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If plastic or aluminum materials are used to reduce underbody weight, then weight is reduced, but rigidity is reduced and CO2 emissions increase
Solution Approach 1:
The patent employs a composite structure combining steel pipes with plastic or aluminum panels. The steel pipe lattice framework provides the primary structural support and rigidity, while the plastic or aluminum panels are attached to these pipes to form the underbody surface. This composite approach allows weight reduction through the use of lighter panel materials while maintaining overall rigidity through the steel pipe skeleton.
2Weight of moving object
If steel material thickness is reduced to reduce weight, then weight is reduced, but bending and torsional rigidity are lowered
Solution Approach 1:
The underbody structure is segmented into a three-dimensional lattice framework composed of multiple steel pipes arranged in a grid pattern. This segmentation creates a spatial truss structure where forces are distributed across multiple members rather than concentrated in single thick plates. The lattice configuration provides high bending and torsional rigidity through its geometric arrangement, allowing the use of thinner pipe walls compared to solid steel plates while maintaining structural integrity.
Solution Approach 2:
The patent transitions from a conventional two-dimensional plate structure to a three-dimensional lattice framework. By adding the vertical dimension and creating a spatial configuration of pipes, the structure achieves enhanced rigidity-to-weight ratio. The three-dimensional arrangement allows forces to be distributed through multiple planes and levels, providing superior structural performance with reduced material thickness.
3Strength
If a lattice frame structure with intersecting pipes is used, then rigidity is improved, but manufacturing complexity increases
Solution Approach 1:
The patent employs standardized pipe components and connection joints that serve multiple functions throughout the structure. The same types of pipes, connectors, and joining methods are used repeatedly across different sections of the lattice framework. This standardization allows for modular assembly, where pre-fabricated units can be replicated and combined to form the complete underbody structure, thereby reducing manufacturing complexity despite the three-dimensional lattice configuration.
Data Source
AI summary
A platform structure for an electric vehicle is proposed. More particularly, according to the platform structure for an electric vehicle, a frame configured by coupling pipes to each other to form a lattice structure is installed to have a vertical double structure, and each pipe constituting an upper frame and each pipe constituting a lower frame intersect with each other such that rigidity of the platform structure is secured and the manufacturing period thereof due to easy manufacturing is decreased to reduce manufacturing cost. The platform structure for an electric vehicle includes a frame of the platform structure configured in such a manner that pipes are coupled to each other by brackets to form a lattice structure.