Battery Pack Joining Structure Without Bolted Fasteners
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Solution Overview
Problem
Conventional energy storage apparatuses face a decrease in electric capacity and increased mass due to the use of fixing members like bolts and nuts, which also degrade vibration and impact resistance.
Innovation Solution
The energy storage apparatus employs adhesion or welding to join energy storage units, holding members, and outer cases, eliminating the need for bolts and nuts, thereby reducing weight and volume while enhancing vibration and impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixing members such as bolts and nuts are used to join energy storage units, then vibration resistance and impact resistance are improved, but the volume occupation rate of energy storage devices decreases and electric capacity per volume decreases
Solution Approach 1:
The invention extracts and eliminates the fixing members (bolts and nuts) from the energy storage apparatus structure. By removing these components entirely and replacing them with a integrated holding member that holds multiple energy storage devices, the patent achieves volume reduction while maintaining structural integrity and vibration resistance through the unified design of the holding member itself.
Solution Approach 2:
The holding member integrates multiple functions: it holds multiple energy storage devices, provides structural support, and eliminates the need for separate fixing members. By merging the holding function with the structural framework, the patent reduces the number of components and increases the volume occupation rate of energy storage devices while maintaining reliability.
2Reliability
If fixing members such as bolts and nuts are used to join energy storage units, then vibration resistance and impact resistance are improved, but the mass of the energy storage apparatus increases
Solution Approach 1:
The invention extracts and removes the heavy fixing members (bolts and nuts) from the energy storage apparatus. By eliminating these components and replacing them with a streamlined holding member design, the patent reduces the overall mass of the apparatus while maintaining impact resistance through the integrated structural design.
Solution Approach 2:
The invention changes the structural parameters by transitioning from a discrete component assembly (multiple energy storage devices joined by bolts and nuts) to an integrated holding member structure. This parameter change reduces mass while maintaining or improving impact resistance through the unified structural design.
3Stability of the object's composition
If fixing members such as bolts and nuts are used to join energy storage units, then structural stability is improved, but the device complexity increases due to additional mounting portions
Solution Approach 1:
The holding member merges multiple structural functions into a single integrated component. It combines the holding function, structural support, and joining function that were previously distributed across multiple energy storage devices, fixing members, and mounting portions. This merging simplifies the overall structure while maintaining structural stability.
Solution Approach 2:
The holding member is designed as a universal component that performs multiple functions: holding multiple energy storage devices, providing structural support, and ensuring structural stability. This multi-functionality eliminates the need for separate fixing members and mounting portions, reducing device complexity while maintaining stability.
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
This configuration maintains electric capacity and prevents volume reduction while ensuring robust vibration and impact resistance through weight reduction and efficient space utilization.
Implementation Method 1
a first joint that joins the energy storage unit and the holding member to each other by adhesion or welding
Implementation Method 2
a first joint that joins the energy storage unit and the holding member to each other by adhesion or welding
Implementation Method 3
a second joint that joins the holding member and the outer case to each other by adhesion or welding
Implementation Method 4
a second joint that joins the holding member and the outer case to each other by adhesion or welding
Data Source
AI summary
An energy storage apparatus includes an energy storage unit that includes a plurality of energy storage devices arrayed in a first direction, a holding member that holds the energy storage unit, an outer case that accommodates the energy storage unit and the holding member, a first joint that joins the energy storage unit and the holding member by adhesion or welding, and a second joint that joins the holding member and the outer case by adhesion or welding.