Solid State Battery Moisture Absorbing Sealing Structure
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Solution Overview
Problem
Conventional solid state batteries face challenges in preventing moisture ingress, which can deteriorate their characteristics when mounted on boards, as existing solutions do not adequately seal the battery from moisture entry.
Innovation Solution
Incorporating a moisture-absorbing material into the constituent elements of the solid state battery, such as external terminals, inactive substance parts, insulating outermost layers, covering insulating films, and support boards, to absorb moisture without increasing the battery's volume, thereby reducing moisture entry and enabling downsizing without compromising energy density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate moisture absorbent member is provided inside the housing, then moisture absorption capability is improved, but device complexity and volume increase
Solution Approach 1:
The patent combines the moisture absorption function with existing battery components by incorporating moisture absorbent into the sealing structure or housing material itself, eliminating the need for a separate moisture absorbent member. This integration maintains moisture protection capability while reducing structural complexity and volume.
Solution Approach 2:
The sealing structure or housing material serves dual functions: providing structural containment and absorbing moisture. This multi-functionality approach eliminates dedicated moisture absorption components while maintaining protective capability.
2Reliability
If a separate moisture absorbent member is provided inside the housing, then moisture absorption capability is improved, but the volume of the battery increases
Solution Approach 1:
The patent integrates moisture absorption functionality into the existing sealing structure or housing material, eliminating the need for additional volume dedicated to separate moisture absorbent members while maintaining effective moisture protection.
Solution Approach 2:
The housing or sealing structure performs both structural containment and moisture absorption functions, optimizing space utilization and avoiding volume increase from dedicated moisture absorption components.
3Ease of manufacture
If conventional sealing methods are used, then manufacturing simplicity is maintained, but moisture entry prevention is insufficient
Solution Approach 1:
The patent employs composite materials for the sealing structure or housing that combine sealing functionality with moisture absorption capability. This approach enhances moisture protection beyond conventional sealing while maintaining manufacturing feasibility through integrated material design.
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 integration of moisture-absorbing materials effectively prevents moisture ingress, maintaining battery performance and allowing for compact packaging suitable for board mounting while maintaining energy density.
Implementation Method 1
a member surrounding or in contact with the solid state battery, the member containing a moisture absorbing material
Data Source
AI summary
A solid state battery that includes a solid state battery laminate including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer; and a member surrounding or in contact with the solid state battery, the member containing a moisture absorbing material.