Solid-State Battery Packaging With Gas Barrier Cooling Window
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Solution Overview
Problem
Conventional all-solid-state batteries face issues with gas leakage, such as hydrogen sulfide gas, and lack effective cooling performance, which becomes critical as battery technology advances towards higher output and capacity.
Innovation Solution
A packaging material for all-solid-state batteries is designed with a heat-resistant gas barrier layer made of resin, positioned between the metal foil and sealant layers, and featuring an opening portion that exposes the gas barrier layer, ensuring efficient heat dissipation and preventing gas leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealant layer is used to encapsulate the solid-state battery body, then sealing performance is improved, but heat dissipation performance deteriorates
Solution Approach 1:
The packaging material is divided into multiple functional layers: a sealant layer for sealing performance and a heat-resistant gas barrier layer for heat dissipation. This segmentation allows each layer to specialize in one function, resolving the contradiction between sealing and heat dissipation.
Solution Approach 2:
The packaging material uses a composite structure combining a sealant layer (for sealing) and a heat-resistant gas barrier layer made of resin (for heat dissipation and gas barrier properties). This composite material approach enables simultaneous achievement of sealing performance and heat dissipation performance.
2Ease of manufacture
If conventional packaging materials are used, then manufacturing simplicity is maintained, but gas leakage occurs
Solution Approach 1:
The packaging material employs a composite structure with a heat-resistant gas barrier layer made of resin having specific gas permeability characteristics. This layer prevents hydrogen sulfide gas leakage while maintaining ease of manufacture through a straightforward laminated structure that can be produced using conventional manufacturing processes.
3Power
If high-power battery design is implemented, then output and capacity are improved, but heat generation increases
Solution Approach 1:
The heat-resistant gas barrier layer acts as an intermediary between the solid-state battery body and the external environment. It facilitates heat dissipation from the high-power battery while preventing gas leakage, thereby managing the thermal byproduct of high output and capacity operations.
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 solution provides sufficient cooling performance and prevents hydrogen sulfide gas leakage, enhancing the safety and efficiency of all-solid-state batteries by effectively managing heat and gas permeation.
Implementation Method 1
a heat-resistant gas barrier layer made of resin, the heat-resistant gas barrier layer being provided between the metal foil layer and the sealant layer
Implementation Method 2
the sealant layer is provided with an opening portion formed in a portion corresponding to the solid-state battery body to be encapsulated, and the heat-resistant gas barrier layer is exposed on an inner side in the opening portion
Data Source
AI summary
A packaging material for all-solid-state batteries for encapsulating a solid-state battery body, includes a substrate layer, a metal foil layer laminated on an inner surface side of the substrate layer, a sealant layer laminated on an inner surface side of the metal foil layer, and a heat-resistant gas barrier layer made of resin, the heat-resistant gas barrier layer being provided between the metal foil layer and the sealant layer. The sealant layer is provided with an opening portion formed in a portion corresponding to the solid-state battery body to be encapsulated. The heat-resistant gas barrier layer is exposed on an inner side in the opening portion.