Battery Pack Side Protection Structure for Collision Load Dispersion
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Solution Overview
Problem
Conventional battery protection apparatuses for electric vehicles fail to effectively distribute collision forces, leading to concentrated loads on the side surfaces of battery packs during collisions, which can result in deformation or damage.
Innovation Solution
A battery protection apparatus with a first inclined portion, an extension portion, and a hollow portion is fixed to the vehicle body, designed to absorb collision forces by deforming the extension and hollow portions, thereby dispersing the force away from the battery pack's side surface, and additional connection members are used to secure the apparatus to the vehicle body for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cushioning member is provided on the side surface of the battery pack to protect it during collision, then the battery pack is protected from direct impact, but the collision force is concentrated at a specific point on the side surface causing excessive load and insufficient protection
Solution Approach 1:
The protection apparatus is divided into multiple functional portions: a first portion (inclined member), a second portion (cushioning member), and an extension portion. This segmentation allows the collision force to be distributed across different components rather than concentrated at one point, with each portion absorbing and transmitting force in a controlled manner to protect the battery pack side surface
Solution Approach 2:
The first portion (inclined member) acts as an intermediary between the extension portion and the battery pack side surface. It receives the collision force from the extension portion and transmits it to the battery pack at an angle, distributing the load across a larger area rather than allowing direct concentrated impact on the side surface
2Ease of manufacture
If the battery protection apparatus structure is simplified for easy manufacture, then manufacturing cost is reduced, but the ability to disperse collision force is insufficient
Solution Approach 1:
The first portion, second portion, and extension portion are integrated into a single unified protection apparatus structure. This merging allows the complex force-dispersing functions to be achieved through one integrated component rather than multiple separate parts, simplifying manufacturing while maintaining effective collision force distribution across the battery pack side surface
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 apparatus effectively transmits and disperses collision forces, preventing concentration on the battery pack's side surface and providing comprehensive protection against impacts from obstacles like curbstones or protrusions, while improving attachment convenience and strength.
Implementation Method 1
absorb the collision energy by the deformation of the extension portion and the hollow portion
Implementation Method 2
absorb the collision energy by the deformation of the extension portion and the hollow portion
Data Source
AI summary
A battery protection apparatus fixed to a vehicle body and provided on a side surface of a battery pack, includes a first portion configured to be inclined toward the battery pack side from a lower side to an upper side; an extension portion configured to extend from a lower end of the first portion in a direction being apart from the battery pack; and a second portion provided between the first portion and the battery pack, wherein the first portion and the second portion forms a hollow portion.