Composite Guard Plate Structure for Lightweight Corrosion Resistance
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Solution Overview
Problem
Existing protective plates for new energy vehicles are heavy, prone to scratching, and have weak resistance to corrosion, leading to anti-corrosion failures, which compromise their protective effectiveness.
Innovation Solution
A protective plate composed of a metal plate sealed by glass fiber and carbon fiber reinforced resin layers, with specific thickness and density ratios, enhancing strength, impact resistance, and corrosion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a steel plate is used as a protective plate to ensure strength and impact resistance, then the protective plate has high strength, but the protective plate becomes heavy and has weak resistance to scratching
Solution Approach 1:
The patent uses a composite structure consisting of a metal plate base layer combined with glass fiber reinforced resin layer and carbon fiber reinforced resin layer. This composite material approach maintains the high strength and impact resistance of the metal plate while the fiber-reinforced resin layers provide corrosion resistance and reduce overall weight compared to solid steel construction.
2Strength
If a steel plate is used as a protective plate, then the protective plate has high strength, but the resistance to scratching is weak causing anti-corrosion failure
Solution Approach 1:
The patent employs a multi-layer composite structure where the metal plate provides structural strength while the glass fiber and carbon fiber reinforced resin layers provide superior corrosion resistance and scratch resistance. The fiber-reinforced resin layers act as protective barriers that prevent direct contact between the metal plate and corrosive environmental factors.
Solution Approach 2:
Different layers of the composite structure serve different functional purposes: the metal plate layer provides strength and impact resistance, while the outer fiber-reinforced resin layers provide corrosion resistance and scratch resistance. This local differentiation of material properties optimizes the overall performance for both mechanical strength and environmental resistance.
Data Source
Figure 1~2
AI summary
A protective plate, including: a metal plate; a glass fiber reinforced resin layer, where the glass fiber reinforced resin layer includes a first glass fiber reinforced resin layer and a second glass fiber reinforced resin layer, the first glass fiber reinforced resin layer is located on a side of the metal plate, and the second glass fiber reinforced resin layer is located on a side of the metal plate facing away from the first glass fiber reinforced resin layer; and a carbon fiber reinforced resin layer, where the carbon fiber reinforced resin layer includes a first carbon fiber reinforced resin layer and a second carbon fiber reinforced resin layer, the first carbon fiber reinforced resin layer is located on a side of the first glass fiber reinforced resin layer facing away from the metal plate, and the second carbon fiber reinforced resin layer is located on a side of the second glass fiber reinforced resin layer facing away from the metal plate. The metal plate is sealed by the glass fiber reinforced resin layer and/or the carbon fiber reinforced resin layer. The metal plate, the glass fiber reinforced resin layer, and the carbon fiber reinforced resin layer satisfy the following condition: d2d0+d1+d2∗ρ2ρ0+ρ1+ρ2∗σ2σ0+σ1+σ2>0.046.