Battery Pack Partition Head Layout for Compact Heat Suppression
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Solution Overview
Problem
Conventional battery packs face challenges in making the battery pack more compact while effectively suppressing the influence of abnormal heating on adjacent batteries, which is crucial for enhancing safety.
Innovation Solution
The battery pack incorporates a restraining member that surrounds the batteries and a partition member with a head part that protrudes from the exhaust valve position of one battery, overlapping with adjacent batteries in the height direction, to effectively suppress heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the distance between adjacent batteries is shortened to make the battery pack more compact, then the battery pack size is reduced, but the ability to suppress heat transfer between batteries is weakened
Solution Approach 1:
The partition member extends not only in the horizontal direction between batteries but also protrudes in the vertical direction from the exhaust valve position. This three-dimensional configuration creates overlapping protection zones that block heat transfer paths from multiple directions, effectively suppressing thermal propagation while maintaining compact horizontal spacing between batteries
Solution Approach 2:
The partition member acts as an intermediary barrier positioned between adjacent batteries. By protruding from the exhaust valve position and creating overlapping regions, it establishes a thermal barrier that intercepts heat transfer before it can propagate to neighboring batteries, mediating the thermal interaction between closely spaced battery cells
2Object-affected harmful factors
If a partition member is placed between adjacent batteries to suppress heat transfer, then safety is improved, but the battery pack size increases
Solution Approach 1:
The partition member utilizes the vertical dimension by protruding from the exhaust valve position upward and downward. This vertical extension creates overlapping protection zones that effectively block heat transfer paths without requiring increased horizontal spacing between batteries, thus maintaining compact overall dimensions while providing robust thermal isolation
Solution Approach 2:
The partition member is strategically positioned to protrude specifically from the exhaust valve position, which is a critical location for heat generation and gas release. This localized configuration concentrates the thermal barrier function at the most critical point, providing effective heat suppression where needed most without adding unnecessary volume throughout the entire battery pack
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 allows for a more compact battery pack design while significantly reducing the impact of abnormal heat generation on adjacent batteries, thereby enhancing safety.
Implementation Method 1
conduction of the heat generated in the cylindrical battery to the other cylindrical battery can be suppressed by two sheet members
Data Source
AI summary
A battery pack includes a restraining member including a side part disposed so as to surround at least a part in a height direction of a plurality of batteries arranged in alignment. The battery pack includes a partition member including a partition part that partitions two adjacent batteries, and a head part coupled to an end part in at least one side in the height direction of the partitioning part. The head part protrudes from a position of an exhaust valve of the battery in the height direction, and protrudes in the thickness direction of the partitioning part to include a part overlapping to at least one of the two batteries in the height direction.