Battery Pack Vent Filter Mesh for IP-Rated Assembly Simplification
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Solution Overview
Problem
Existing pack housings for energy storage system (ESS) battery packs face challenges in efficiently assembling waterproof and dustproof units at venting holes, leading to increased man-hours and complexity in ensuring IP-rated performance.
Innovation Solution
A pack housing design incorporating an integrated filter mesh formed by insert injection of a resin filter layer into a metal mesh, which is then mounted over a venting hole using a mounting plate, simplifying assembly and enhancing waterproof and dustproof capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thick fiber filter is disposed between two meshes to satisfy IP rating, then waterproof and dustproof performance is improved, but assembly complexity and man-hours increase
Solution Approach 1:
The patent combines the fiber filter and metal mesh into a single integrated waterproof and dustproof unit. The fiber filter is inserted into the mesh structure, creating one unified component that satisfies IP rating requirements while eliminating the need to separately assemble multiple layers, thereby reducing assembly complexity and man-hours
Solution Approach 2:
The invention uses a composite structure combining fiber material and metal mesh material to create a waterproof and dustproof unit that leverages the advantages of both materials - the fiber filter provides fine particle blocking while the mesh provides structural support and larger particle filtration, achieving high IP rating performance
2Reliability
If a thick fiber filter is disposed between two meshes to satisfy IP rating, then waterproof and dustproof performance is improved, but alignment and assembly difficulty increase
Solution Approach 1:
By merging the fiber filter and mesh into a pre-assembled integrated unit, the patent eliminates the alignment and assembly difficulties associated with separately positioning multiple components. The integrated unit is installed as a single piece, significantly improving ease of manufacture and installation while maintaining the required IP rating
3Reliability
If multiple separate components (meshes and fiber filter) are used, then waterproof and dustproof performance is improved, but assembly time increases
Solution Approach 1:
The patent merges multiple separate components (fiber filter and metal mesh) into a single integrated waterproof and dustproof unit, reducing the number of assembly steps and components to be handled. This significantly reduces assembly time and improves productivity while maintaining the same level of waterproof and dustproof 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 integrated filter mesh reduces assembly time and complexity while maintaining IP-rated performance, ensuring effective gas discharge and protection against moisture and dust.
Implementation Method 1
a filter mesh including a resin filter layer formed of a resin and a mesh integrated with the resin filter layer by insert injection
Data Source
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AI summary
Provided is a pack housing including an internal space capable of accommodating battery cells. The pack housing includes a venting hole provided in at least one surface of the pack housing to communicate with the internal space; and a hole cover assembly configured to cover the venting hole. The hole cover assembly includes a filter mesh including a resin filter layer formed of a resin and a mesh integrated with the resin filter layer by insert injection and placed in the venting hole; and a mounting plate provided in the form of a frame having an empty center and coupled to the at least one surface of the pack housing while pressing an edge region of the filter mesh.