Flexible Sheet Cooling Member for Power Storage Module
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Solution Overview
Problem
The manufacturing cost of cooling members is high due to the need for strong metal containers to seal heat transfer fluids, which increase in pressure and volume with heat, requiring increased material strength and complexity.
Innovation Solution
A cooling member configuration using flexible sheet members connected to enclose refrigerant and an absorbing member, allowing deformation to increase volume and reduce pressure, thereby lowering manufacturing costs and improving heat release properties through a heat releasing section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a strong metal container is used to seal heat transfer fluid, then the sealing reliability is improved, but the manufacturing cost increases
Solution Approach 1:
The patent replaces the traditional rigid metal container with a flexible enclosing member that can expand and contract. This flexible membrane structure maintains sealing reliability while using less material, thereby reducing manufacturing costs. The enclosing member is designed to accommodate volume changes of the heat transfer fluid without requiring high pressure resistance.
Solution Approach 2:
The patent introduces a dynamic volume adjustment mechanism where the enclosing member can change its volume in response to pressure changes. This dynamic behavior allows the system to maintain reliability under varying conditions without requiring an over-engineered static structure, thus reducing manufacturing costs.
2Strength
If a rigid metal container is used, then the pressure resistance is improved, but the heat release efficiency deteriorates
Solution Approach 1:
The flexible enclosing member provides sufficient containment while its thermal properties allow for more efficient heat transfer compared to thick metal containers. The thin-walled flexible structure reduces thermal resistance, improving heat release efficiency while maintaining adequate pressure resistance through flexibility rather than rigidity.
Solution Approach 2:
The patent replaces the mechanical pressure resistance provided by thick metal walls with a pressure distribution mechanism where the flexible membrane distributes stresses evenly. This substitution allows for thinner walls with better thermal conductivity, improving heat release efficiency.
3Strength
If the volume of the enclosing member is increased to reduce pressure, then the pressure resistance requirement is lowered, but the manufacturing complexity increases
Solution Approach 1:
The patent employs a dynamic volume expansion mechanism where the enclosing member automatically increases its volume in response to pressure buildup. This dynamic response simplifies the overall design by eliminating the need for complex pressure relief valves or expansion chambers, as the membrane itself performs the volume adjustment function.
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
The flexible enclosing member reduces pressure resistance and manufacturing costs while enhancing heat release efficiency by increasing the heat transfer area and using a heat releasing section that can circulate gas or fluid to dissipate heat effectively.
Implementation Method 1
the refrigerant that receives heat from a heating element is evaporated and increases its volume and pressure
Implementation Method 2
the flexible sheet members are deformed to increase the volume of the enclosing member and the pressure within the enclosing member is lowered
Implementation Method 3
a heat releasing section configured to receive heat from the enclosing member and release the heat to an outside
Implementation Method 4
The heat releasing section may release heat to an outside via circulation of gas or fluid
Data Source
AI summary
A cooling member includes refrigerant, an absorbing member absorbing the refrigerant, an enclosing member including flexible sheet members, that are connected to each other and enclosing the refrigerant and the absorbing member in a sealed state, and a heat releasing section configured to receive heat from the enclosing member and release the heat to an outside.