Battery Module Wing Portion Cooling Member Design
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Solution Overview
Problem
Existing battery modules face challenges in achieving high cooling efficiency and structural stability, particularly due to thermal conduction resistance in cooling structures, which affects performance under varying temperature conditions and increases the risk of deformation from external impacts.
Innovation Solution
A battery module design featuring a pouch-type case with a wing portion and an integrated cooling member placed between the wing and accommodation portions, utilizing thermally conductive materials and adhesives for efficient heat dissipation, allowing for direct contact with the accommodation sides of adjacent cells and providing structural support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling structure is designed to remove heat from battery cells, then cooling efficiency is improved, but thermal conduction resistance between members reduces the actual cooling performance
Solution Approach 1:
A cooling member is introduced as an intermediary component between the battery cell and the cooling structure. This cooling member includes a contact portion that directly touches the battery cell and an extension portion that extends outward, facilitating efficient thermal conduction while maintaining reliable thermal contact throughout the charging/discharging process.
Solution Approach 2:
The cooling member is designed to dynamically adapt to battery cell expansion and contraction during charging and discharging. The extension portion can elastically deform to maintain continuous thermal contact with the battery cell surface, ensuring consistent cooling performance despite dimensional changes in the battery cell.
2Quantity of substance
If battery cells are compactly aggregated in a narrow space to achieve high capacity, then energy density is improved, but heat dissipation becomes more difficult
Solution Approach 1:
The cooling member extends in the width direction of the battery module, utilizing the lateral space between adjacent battery cells. This dimensional approach allows the cooling structure to access heat from multiple battery cells simultaneously without increasing the vertical height or compromising the compact aggregation of cells.
Solution Approach 2:
The cooling member serves multiple functions: it acts as a thermal conduction path, provides structural support between battery cells, and can be configured to contact multiple adjacent battery cells. This multi-functionality enables effective heat dissipation from high-capacity compact battery arrangements without requiring separate components for each function.
3Temperature
If cooling members are added to improve heat dissipation, then cooling performance is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The cooling member can be constructed as a thin, flexible component that can be easily manufactured and installed. The elastic portion allows the cooling member to conform to the battery cell surface without requiring complex rigid structures, simplifying both manufacturing and assembly processes while maintaining effective thermal contact.
4Strength
If the battery module structure is made rigid to ensure structural stability, then mechanical strength is improved, but the ability to accommodate thermal expansion and contraction is reduced
Solution Approach 1:
The cooling member incorporates an elastic portion that can dynamically deform in response to battery cell dimensional changes during charging and discharging. This dynamic flexibility allows the overall battery module structure to accommodate thermal expansion and contraction without compromising structural integrity, as the cooling member absorbs the dimensional variations.
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 design enhances cooling efficiency, minimizes cell deformation from external impacts, and ensures improved structural safety and performance by effectively removing heat generated from the battery cells.
Implementation Method 1
the cooling member may be in contact with sides of the accommodation portions of two battery cells adjacently stacked in a vertical direction, together
Implementation Method 2
The cooling member may be attached to sides of the battery cells by means of a thermally conductive adhesive
Data Source
AI summary
Disclosed is a battery module for effectively removing the heat generated from battery cells and minimizing the deformation of the battery cells caused by external impacts, and the battery module includes a battery cell stack having a plurality of battery cells electrically connected to each other, and a module case accommodating the battery cell stack, wherein each battery cell includes a pouch-type case having an accommodation portion so that a rim of the accommodation portion is sealed, an electrode assembly provided in the accommodation portion of the pouch-type case, and an electrode terminal having one end connected to the electrode assembly and the other end protruding out of the pouch-type case, wherein the pouch-type case has a wing portion formed by fusing at least a part of the rim where the electrode terminal is not formed, and wherein a cooling member is provided to at least one space between the wing portion and the accommodation portion.