Battery Box Body Structure for Side Impact Reinforcement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The safety of batteries in electric vehicles is compromised due to their exposure at the bottom of the vehicle body, leading to weak lateral anti-extrusion capabilities and inadequate safety structures on the sides, which can result in ineffective protection during collisions or external impacts.
Innovation Solution
A box body design for batteries that includes a main body with a side impact reinforcing beam extending from the middle of the top to the outer edges, enhancing anti-side collision capabilities and integrating a high-voltage bin at the top to prevent external damage, while also allowing for weight reduction and improved structural strength through protrusions and hidden channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery is mounted at the bottom of the vehicle body, then the installation space is optimized, but the safety of the battery is compromised due to exposure and weak lateral anti-extrusion capability
Solution Approach 1:
The box body is segmented into multiple functional components: a main body for battery accommodation, side impact reinforcing beams for lateral protection, and a high-voltage bin for electrical component separation. This segmentation allows each component to specialize in specific safety functions, with the side impact reinforcing beams specifically addressing the lateral extrusion vulnerability identified in the contradiction.
Solution Approach 2:
The side impact reinforcing beams extend in multiple directions (lengthwise and widthwise) from the main body, adding dimensional complexity to the protection structure. This multi-directional extension creates a three-dimensional protective framework that effectively resists lateral impacts from various angles, transforming the simple bottom-mounting configuration into a multi-dimensional safety system.
2Reliability
If side impact reinforcing beams are added to enhance anti-side collision capability, then safety performance is improved, but the weight and complexity of the box body increase
Solution Approach 1:
Rather than uniformly reinforcing the entire box body, the side impact reinforcing beams are strategically positioned only where lateral impact resistance is most critical - extending from the main body toward the outer edges at the top portion. This localized reinforcement provides maximum safety benefit while minimizing additional weight compared to comprehensive strengthening.
Solution Approach 2:
The side impact reinforcing beams are constructed using composite material structures, combining materials with different properties to achieve optimal strength-to-weight ratio. This allows the beams to provide enhanced lateral protection while keeping the weight increase minimal, resolving the contradiction between safety improvement and weight control.
3Ease of manufacture
If the top of the main body is formed as part of the box body top for battery mounting, then the mounting structure is simplified, but the anti-side collision capability is reduced due to structural weakness
Solution Approach 1:
The top of the main body is merged with the box body top structure, creating an integrated mounting surface that simplifies battery installation. Simultaneously, side impact reinforcing beams are integrated into this merged structure, extending from the main body through the top portion. This merging approach allows the mounting function and safety reinforcement to coexist in a unified structure, eliminating the need for separate components.
Solution Approach 2:
The top portion of the box body serves multiple functions: it provides a mounting surface for battery installation, maintains structural integrity for side collision resistance, and supports the high-voltage bin mounting. This multi-functionality resolves the contradiction by making the same structural element serve both manufacturing simplicity and safety requirements simultaneously.
Data Source
AI summary
The present disclosure relates to a box body (10), a battery (100), and an electric device. The box body (10) includes a main body (11) and a side impact reinforcing beam (14). The main body (11) has an accommodation chamber(s). The side impact reinforcing beam (14) is disposed at the top of the main body (11) and extends from a middle of the top of the main body (11) to an outer edge of each of two opposite sides of the top of the main body (11).