Battery Frame Lengthwise Load Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing structure of battery packs mounted under vehicle floor panels is prone to significant deformation when subjected to large lengthwise loads, as disclosed in JP 2014-19203 A.
Innovation Solution
A battery frame is designed with elongated hat-shaped lengthwise members extending continuously in the vehicle length direction, coupled with side and cross members to provide enhanced strength and support, reducing deformation by connecting edge lines of lengthwise members along the vehicle length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional battery pack mounting structure is used, then ease of manufacture is improved, but strength against lengthwise load deteriorates
Solution Approach 1:
The battery frame is divided into multiple cross members (first cross members, second cross member) and lengthwise members that work together to distribute and resist lengthwise loads, while maintaining modular assembly ease
Solution Approach 2:
The patent introduces lengthwise members extending in the vehicle length direction, adding a new dimensional element to the conventional width-direction cross members, creating a three-dimensional load-bearing structure that resists lengthwise forces
2Strength
If hat-shaped cross section is used for lengthwise members, then strength is improved, but device complexity increases
Solution Approach 1:
The hat-shaped cross section is applied specifically to the lengthwise members where strength against lengthwise loads is most critical, while other components maintain simpler geometries, optimizing strength where needed without unnecessarily increasing overall complexity
Data Source
AI summary
A battery frame that supports a bottom of a battery pack mounted under a floor panel includes a plurality of first cross members extending along the vehicle width and having opposite ends coupled to the floor side members to thereby support the bottom of the battery pack, a second rear cross member coupled with a rear cross member and extending along the vehicle width to support the bottom of the battery pack, and first side members and second side members extending along the vehicle length and coupled with the first cross members and the second rear cross member. The first side members and the second side members are disposed such that their edge lines are connected along the vehicle length.