Battery Partitioning Member for Condensation and Humidity Control
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Solution Overview
Problem
Conventional battery assemblies lack measures to suppress the generation of condensed water, which can lead to micro-short circuits and corrosion of metal parts, and existing partitioning members have not adequately addressed moisture absorption properties.
Innovation Solution
A partitioning member with a casing material and encapsulating material, where the encapsulating material contains a porous body, and the casing material has specific moisture permeability, allowing moisture absorption and retention, with a non-bonded interface to facilitate humidity control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional partitioning members are used, then thermal insulation properties are provided, but moisture absorption properties are insufficient leading to condensed water generation
Solution Approach 1:
The partitioning member incorporates a porous body as the encapsulating material, which provides both thermal insulation and moisture absorption capabilities. The porous structure allows the material to absorb moisture from the atmosphere while maintaining its insulating properties, thereby preventing condensed water generation without compromising thermal protection.
Solution Approach 2:
The partitioning member is constructed as a composite structure with a casing material and an encapsulating material containing a porous body. This composite design combines the protective function of the casing with the dual functionality of the porous encapsulating material that provides both thermal insulation and moisture absorption, resolving the contradiction between these two requirements.
2Reliability
If the casing material has high moisture permeability to absorb moisture, then humidity control is improved, but thermal insulation properties may be compromised
Solution Approach 1:
The porous body in the encapsulating material is specifically designed to provide both moisture absorption and thermal insulation simultaneously. The porous structure creates air pockets that trap moisture while also providing thermal resistance, allowing the material to control humidity without compromising thermal insulation performance.
Solution Approach 2:
The partitioning member uses different materials with specific properties for different functions: the casing material provides structural protection, while the porous encapsulating material provides localized moisture absorption and thermal insulation. This differentiation of material properties in different regions allows simultaneous achievement of humidity control and thermal 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
The partitioning member effectively suppresses humidity and condensed water generation, maintaining thermal insulation and preventing corrosion, thereby enhancing the safety and performance of battery assemblies.
Implementation Method 1
the encapsulating material contains a porous body
Implementation Method 2
the partitioning member having moisture absorption properties can be used as a means for controlling humidity
Implementation Method 3
the casing material has a moisture permeability of 1.0×10−3 to 5.0×101 g/m2/day
Implementation Method 4
providing a partitioning member between single cells to cool a damaged single cell
Data Source
AI summary
A partitioning member that partitions single cells in a battery assembly so as to readily suppress the generation of condensed water inside the battery assembly. The partitioning member includes an encapsulating material in a casing material. The encapsulating material 110 includes a porous body, and the casing material has a moisture permeability set to 1.0×10−3 to 5.0×101 g/m2/day in an environment of 40° C. and 90% RH