Variable Width Cell Holder for Battery Thermal Dissipation
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Solution Overview
Problem
Secondary batteries face challenges in production yield and defect reduction, as well as thermal dissipation and movement restriction within the battery cell structure.
Innovation Solution
A battery cooling system with a cell holder having a variable opening width and inclined sidewalls, featuring different inclination angles along its length to promote thermal dissipation and restrict movement, is used to improve the secondary battery's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cell holder with constant width opening is used, then the structure is simple, but thermal dissipation is insufficient and cell movement cannot be restricted
Solution Approach 1:
The cell holder employs a dynamic width opening design where the distance between sidewalls varies along the longitudinal direction, creating different sections (first, second, and third sections) with progressively changing geometries. This dynamic structural variation enables both effective thermal dissipation through optimized surface area and restriction of cell movement through tapered configurations, resolving the contradiction between simple structure and functional performance.
2Ease of operation
If the opening width is increased, then cell insertion is easier, but thermal dissipation and movement restriction are reduced
Solution Approach 1:
The cell holder is segmented into multiple functional sections along its length: a first section with initial width for easy cell insertion, a second section with intermediate width for thermal dissipation, and a third section with reduced width for movement restriction. This segmentation allows each portion to optimize for its specific function, enabling easy insertion while maintaining effective thermal management and cell positioning.
Solution Approach 2:
Different sections of the cell holder possess different local geometries tailored to specific functions. The first section features a larger opening width optimized for insertion ease, while subsequent sections progressively reduce width to enhance thermal dissipation surface area and restrict cell movement. This local quality variation resolves the contradiction between ease of operation and thermal performance.
3Ease of manufacture
If the cell holder structure is simplified, then manufacturing is easier, but production yield and defect reduction are compromised
Solution Approach 1:
The cell holder is designed as a multi-functional component that simultaneously provides thermal dissipation, cell movement restriction, and structural support within a single integrated structure. The variable width opening design achieves multiple objectives without requiring additional separate components, maintaining manufacturing simplicity while improving production yield through enhanced thermal management and cell positioning stability.
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 enhances thermal dissipation and restricts movement, thereby improving production yield and reducing defects in secondary batteries.
Implementation Method 1
A battery cooling system with a cell holder having a variable opening width and inclined sidewalls, featuring different inclination angles along its length to promote thermal dissipation
Data Source
AI summary
A secondary battery includes a battery cell and a cell holder having an opening with a width varying along a first direction which extends along a lengthwise axis of the battery cell in the cell holder.