Vehicle Battery Adhesive Layout for Easier Pack Separation
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Solution Overview
Problem
In vehicles with battery packs fixed to rockers using adhesion members, cutting and separation during repairs or recycling are difficult due to continuous adhesive layouts, which increase adhesion strength but hinder tool insertion and separation processes.
Innovation Solution
Intermittent layout of adhesion members along the vehicle length direction, with alternating first and second adhesion members on the side walls of the battery pack case, allowing easier tool insertion and optimizing adhesion strength for facilitated cutting and separation while maintaining sufficient joining stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesion members are laid out continuously along the vehicle length direction, then adhesion strength is improved, but cutting and separation difficulty increases
Solution Approach 1:
The continuous adhesion member layout is segmented into intermittent sections along the vehicle length direction. This segmentation creates gaps that allow cutting tools to access and separate the battery pack from fixing members, while the segmented adhesion members maintain sufficient overall bonding strength through strategic placement at critical joining regions.
2Ease of repair
If adhesion members are laid out intermittently, then cutting and separation ease is improved, but adhesion strength may be reduced
Solution Approach 1:
Adhesion members are strategically placed at specific local regions where joining stiffness is most critical, such as at the joining regions between side walls and fixing members. This localized quality approach ensures that adhesion strength is concentrated where structurally necessary, while other regions remain free for easy separation during repairs.
Solution Approach 2:
The adhesion members are pre-positioned to extend into the fixing members at joining regions, creating preliminary mechanical interlocking before final assembly. This preliminary action ensures that even with intermittent layout, the critical joining points have sufficient strength and stiffness to maintain structural integrity.
3Stability of the object's composition
If adhesion members extend into fixing members, then joining stiffness is improved, but device complexity increases
Solution Approach 1:
The adhesion member extension into fixing members is segmented to occur only at specific joining regions rather than continuously. This segmentation reduces the overall complexity of the adhesion member layout while maintaining joining stiffness at critical points where the side walls connect to the fixing members.
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
Facilitates the cutting and separation of battery packs and fixing members, optimizing adhesion strength and reducing the need for specialized tools, while maintaining adequate joining stiffness for structural integrity.
Implementation Method 1
The fixing members are configured to be joined to the battery pack by a plurality of adhesion members
Data Source
AI summary
A vehicle includes a vehicle body provided with each of a pair of rockers on each side of a floor panel in a right-left direction, a battery pack that stores electric power to be supplied to a traction motor, and a pair of fixing members that fixes the battery pack to the rockers. The battery pack and the fixing members are joined by a plurality of adhesion members. The adhesion members are intermittently laid out along a vehicle length direction of the vehicle.