Battery Case Side Reinforcement With Ribs for Collision Energy Absorption
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Solution Overview
Problem
Existing electric vehicle battery structures lack effective side reinforcement to mitigate collision impacts, which can lead to damage and potential fires.
Innovation Solution
A side reinforcing structure for the battery case featuring absorption sections with reinforcing ribs that absorb collision energy and support the sides of the battery, including H-shaped and ×-shaped cross-sectional designs to distribute and absorb external forces effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a battery is mounted under the floor of a vehicle to use wide space, then the energy storage capacity is improved, but the protection against collision damage is worsened
Solution Approach 1:
The side wall of the battery case is divided into multiple absorption sections, each containing reinforcing ribs that can independently deform to absorb collision energy. This segmentation allows the structure to dissipate impact forces through controlled deformation of individual sections rather than the entire wall, providing effective protection while maintaining the space-efficient under-floor mounting configuration.
Solution Approach 2:
The absorption sections with reinforcing ribs are pre-configured in the side walls to provide cushioning against collision impacts before actual damage occurs. These structures are designed to deform in a controlled manner during collision, absorbing impact energy and preventing direct transmission to the battery, thereby protecting the energy storage system mounted in the space-constrained under-floor position.
2Reliability
If the side wall is made thicker to improve collision protection, then the protection performance is improved, but the weight of the battery case is worsened
Solution Approach 1:
Instead of uniformly thickening the entire side wall, the invention introduces localized absorption sections with reinforcing ribs at specific positions where collision impacts are most likely to occur. These localized reinforcements provide targeted collision protection where needed most, while the rest of the side wall maintains its original thickness, thereby achieving effective protection without proportionally increasing the overall weight of the battery case.
Solution Approach 2:
The side wall structure combines different structural elements (absorption sections with reinforcing ribs integrated into the side wall) to create a composite construction that provides enhanced collision protection. This composite design achieves superior protective performance compared to a simple thick wall, while optimizing the weight by using the protection only where structurally necessary.
3Ease of manufacture
If a simple side wall structure is used to reduce manufacturing complexity, then the manufacturing ease is improved, but the collision energy absorption capability is worsened
Solution Approach 1:
The side wall is segmented into multiple absorption sections with reinforcing ribs, creating a modular structure that can be manufactured using standard stamping and forming processes. Each absorption section can be formed as an integrated part of the side wall during normal manufacturing, avoiding the need for separate components or complex assembly operations. This segmented design effectively increases collision energy absorption capability while maintaining manufacturing simplicity through processes already common in battery case production.
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 solution provides enhanced collision mitigation and protection for electric vehicle batteries, reducing deformation and weight while maintaining structural rigidity and improved collision performance.
Implementation Method 1
absorption sections including at least one or more reinforcing ribs, and the absorption sections are continuously disposed to absorb collision energy
Data Source
AI summary
A side reinforcing structure of a battery case includes reinforcing members each including at least one or more reinforcing ribs. The reinforcing members are continuously disposed to absorb collision energy that is applied to sides of a battery and to support the sides of the battery.