Electricity Storage Module Multi-Column Cavity Heat Dissipation
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Solution Overview
Problem
Conventional electricity storage modules experience localized heat buildup due to trapped heat generated by aligned battery elements, leading to accelerated deterioration and performance issues, especially when housed in a case.
Innovation Solution
The design features a holding member with cavities aligned in multiple levels, allowing external air to flow through exposed outer surfaces of the battery elements, facilitating heat dissipation by both incoming air cooling and outgoing warmed air, and includes inter-column and inter-layer partitioning to enhance airflow and prevent heat trapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If multiple electricity storage elements are aligned in a column and held in a case, then the module structure is compact and stable, but heat generated by the elements is trapped near the center elements, causing localized high temperatures and accelerated deterioration
Solution Approach 1:
The patent transitions from a single-column vertical alignment to a multi-column arrangement with both vertical and horizontal dimensions. Cavities are organized into multiple columns where elements in the same column are vertically aligned, but columns are positioned at different horizontal locations. This dimensional expansion creates multiple heat dissipation pathways and prevents heat trapping that occurs in single-column configurations.
Solution Approach 2:
The holding member is segmented into multiple cavity columns, with each column containing vertically aligned cavities. This segmentation divides the heat dissipation function across multiple independent columns, allowing heat to dissipate from different locations simultaneously. The partitioning walls between columns further segment the internal space, creating distinct thermal zones that prevent heat accumulation.
2Device complexity
If electricity storage elements are aligned vertically in a single column, then the module has simple structure, but heat dissipation is poor and central elements reach high temperatures
Solution Approach 1:
The patent adds a horizontal dimension to the cavity arrangement by creating multiple columns positioned at different horizontal locations. While each column maintains simple vertical alignment, the multi-column configuration provides multiple heat dissipation routes without significantly increasing structural complexity. The holding member integrates these columns into a unified structure with partitioning walls.
3Temperature
If outer surfaces of electricity storage elements are exposed through outer wall opening portions, then heat dissipation is improved, but the module loses structural enclosure and protection
Solution Approach 1:
The outer wall is segmented with discrete opening portions rather than being completely enclosed or completely open. These opening portions are strategically positioned to expose outer surfaces of electricity storage elements for heat dissipation while maintaining structural enclosure. The partitioning walls and cavity structures provide additional protection, creating a balanced design that allows heat dissipation without compromising overall protection.
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 effectively suppresses high temperatures within the module, improving heat dissipation and allowing for flexible connection configurations (series, parallel, or combination) to meet performance and lifespan requirements.
Implementation Method 1
external air flows into the interior of the holding member through the outer wall opening portions formed in the outer wall of the holding member. Since the outer surfaces of the electricity storage elements are exposed at the outer wall opening portions, the outer surfaces of the electricity storage elements are reliably cooled by air that has flowed in through the outer wall opening portions.
Implementation Method 2
in the interior of the holding member, air warmed by the heat generation of the electricity storage elements can flow out to the exterior of the holding member through the outer wall opening portions. This makes it possible to suppress a case in which the interior of the holding member locally reaches a high temperature.
Data Source
AI summary
An electricity storage module includes: multiple electricity storage elements; and a holding member formed by aligning multiple cavities in which the multiple electricity storage elements are stored, wherein an outer wall of the holding member has outer wall opening portions through which the multiple cavities communicate with the exterior, and outer surfaces of the multiple electricity storage elements stored in the multiple cavities are exposed to the exterior from the outer wall through the outer wall opening portions, and the holding member has a first cavity column in which cavities among the multiple cavities are aligned in two levels in an alignment direction, and a second cavity column in which cavities among the multiple cavities are aligned in two levels in the alignment direction at positions shifted in a direction intersecting with the alignment direction.