Battery Housing Vent Structure to Limit Heat Spread Between Stacks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electricity storage devices experience heat transfer between adjacent units due to high-temperature gas discharge, leading to sequential heating of neighboring units.
Innovation Solution
The design incorporates a housing case with a top plate part having an uneven shape and demarcation members that include protruding and depressed portions, allowing for improved heat dissipation through contact with the top plate part and vehicle body, enhancing heat transfer to the outside.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If hollow members are used as smoke exhaust paths, then gas discharge is enabled, but heat transfer to adjacent electricity storage devices occurs
Solution Approach 1:
The demarcation member acts as an intermediary component between adjacent electricity storage devices. It includes a flow passage for gas discharge while simultaneously serving as a thermal barrier. The protruding portion contacts the top plate part to dissipate heat, preventing direct heat transfer to neighboring devices through the demarcation member itself.
Solution Approach 2:
The solution extends heat dissipation from a one-dimensional flow passage to a three-dimensional structure by adding a protruding portion that contacts the top plate part. This vertical extension creates an additional heat dissipation path upward, away from adjacent devices, transforming the heat management approach from horizontal containment to vertical dissipation.
2Temperature
If demarcation member contacts top plate part, then heat dissipation improves, but structural complexity increases
Solution Approach 1:
The demarcation member is designed to perform multiple functions simultaneously: it serves as a structural divider between electricity storage devices, provides a flow passage for gas discharge, acts as a thermal barrier, and includes a protruding portion for heat dissipation. By integrating these functions into a single component, structural complexity is minimized while achieving effective heat management.
Solution Approach 2:
The solution merges the demarcation member with the heat dissipation function by integrating the protruding portion directly into the demarcation member structure. This combination eliminates the need for separate heat dissipation components, reducing overall structural complexity while maintaining effective thermal management.
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
Mitigates heat transfer between adjacent electricity storage devices, effectively dissipating heat to prevent sequential heating and enhancing heat dissipation through increased surface area and contact with the vehicle body.
Implementation Method 1
heat dissipation from the top plate part improves and the heat can be effectively released to the outside of the housing case
Implementation Method 2
heat transferred from the demarcation member to the top plate part can be transferred to the vehicle body through the protruding portion
Data Source
AI summary
An electricity storage device includes a plurality of electricity storage stacks and a housing case that houses the electricity storage stacks. The housing case includes a top plate part that is located on an upper side of the electricity storage stacks and has an uneven shape, and demarcation members that demarcate regions where the electricity storage stacks are respectively disposed. The top plate part includes protruding portions that protrude upward and depressed portions that are depressed downward. The demarcation members are each disposed between the electricity storage stacks that lie next to each other. Flow passages through which a gas discharged from the electricity storage stacks flows are provided inside the demarcation members. The demarcation members are in contact with the depressed portion.