Battery Pack Support Beam Venting for Rigidity and Cell Space
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery packs face challenges in securing rigidity without occupying space for secondary batteries, managing gas venting to prevent explosions, and ensuring sufficient space for battery accommodation.
Innovation Solution
A battery pack design featuring a flat rectangular parallelepiped shape with a lower case comprising a base plate, under cover, and side pack frame, supported by beams that double as a rigidity reinforcement and gas discharge path, utilizing vent holes and hollow portions for efficient gas release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a crossbeam-shaped reinforcing member is provided between secondary cells to secure rigidity, then the rigidity of the battery pack is improved, but the space for accommodating the secondary battery is reduced
Solution Approach 1:
The patent combines the reinforcing member and the gas venting structure into a single integrated component. The reinforcing member includes hollow portions that serve as gas discharge paths, merging the structural support function with the safety venting function, thereby eliminating the need for separate gas venting structures that would occupy additional battery accommodation space.
Solution Approach 2:
The reinforcing member is designed to perform multiple functions simultaneously: it provides structural rigidity to the battery pack while also serving as a gas venting pathway through its hollow portions. This multi-functionality allows the same component to address both mechanical strength requirements and safety requirements without compromising battery accommodation space.
2Reliability
If a separate venting structure is provided to quickly discharge gas from the secondary battery, then the safety is improved, but the space for accommodating the secondary battery is reduced
Solution Approach 1:
The venting structure is merged with the reinforcing member, forming an integrated component where the hollow portions of the reinforcing member serve as gas discharge pathways. This eliminates the need for separate venting structures that would occupy additional space, while maintaining rapid gas discharge capability for safety.
3Stability of the object's composition
If the battery pack is designed with a flat rectangular parallelepiped shape with low height to ensure driving stability, then the vehicle stability is improved, but the rigidity of the battery pack becomes difficult to secure
Solution Approach 1:
The battery pack is segmented into multiple battery modules arranged in a layered configuration. This segmentation allows the flat, low-height design to maintain vehicle stability while the internal modular structure with reinforcing members provides the necessary rigidity. The segmented approach enables independent optimization of each module's structural properties.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
There is disclosed a battery pack for a vehicle having a secondary battery and a vehicle including the same. The battery pack may include a quadrilateral base plate; a quadrilateral under cover spaced downward a preset distance apart from the base plate to face the base plate; a side pack frame connected to an edge of the base plate and an edge of the under cover, and configured to form a periphery of the lower case 10; and a support beam provided between the base plate and the under cover, and extending in the first direction. The support beam may include a hollow pipe having an end connected to the side pack frame. A base vent hole may be provided at an area of the base plate facing the support beam and a beam vent hole may be provided at an area of the support beam facing the base vent hole. The hollow portion of the support beam may be in communication with a frame hollow portion of the side pack frame. The frame hollow portion may be connected to the pack venting device.