Battery Case Material Blend for Thermal Conductivity
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Solution Overview
Problem
Batteries face reduced charge capacity and shortened cycle-life due to poor thermal conductivity in existing materials, leading to excessive heat generation and difficulty in removing thermal energy, which degrades critical components and reduces safety.
Innovation Solution
A battery case made from a blend of materials such as polysulfone, acrylonitrile butadiene styrene (ABS), Nylon, polyphenylene oxide (PPO), and styrene-acrylonitrile (SAN) blended with thermally conductive polyphenylene sulphide, enhancing thermal conductivity to effectively remove excess heat during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional materials such as polysulfone and acrylonitrile-butadiene-styrene are used for battery case, then chemical stability in caustic electrolytes is improved, but thermal conductivity deteriorates
Solution Approach 1:
The patent applies composite materials by combining traditional chemically stable materials (polysulfone, acrylonitrile-butadiene-styrene) with thermally conductive materials (graphite, metal particles) to create a battery case that simultaneously achieves both chemical stability and improved thermal conductivity. The composite structure allows the case to resist electrolyte corrosion while effectively dissipating heat generated during battery operation.
2Temperature
If heat sinks are added to remove thermal energy, then heat removal capability is improved, but device complexity increases
Solution Approach 1:
The patent merges the heat removal function with the battery case structure itself by integrating thermally conductive materials directly into the case. This consolidation eliminates the need for separate heat sink components, achieving effective heat dissipation while reducing overall device complexity and maintaining a compact design.
Solution Approach 2:
The battery case is designed to serve multiple functions simultaneously: it provides chemical protection against electrolyte corrosion, structural support for battery components, and active heat dissipation through integrated thermally conductive materials. This multi-functionality reduces the need for additional specialized components.
3Temperature
If highly conductive material is added without heat sink, then thermal conductivity is improved, but heat removal effectiveness deteriorates
Solution Approach 1:
The patent uses thermally conductive materials (graphite, metal particles) as intermediary substances embedded within the battery case structure. These intermediaries facilitate heat transfer from the battery cells to the case exterior, acting as a thermal bridge that connects the heat-generating components to the external environment for effective heat dissipation.
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 improves thermal conductivity, reduces temperature within the battery, extends cycle-life, and enhances safety by efficiently dissipating heat, thereby maintaining performance and reliability.
Implementation Method 1
The case of the battery has a material that includes a blend comprising at least one of polysulfone, acrylonitrile butadiene styrene (ABS), Nylon, polyphenylene oxide (PPO), styrene-acrylonitrile (SAN), and polypropylene. The material of the case enables removal of thermal energy generated during operation of the battery.
Data Source
AI summary
Some embodiments are directed to a battery. The battery can include a case having a hollow accommodation cavity formed therein. The case having a material that includes a blend comprising at least one of polysulfone, acrylonitrile butadiene styrene (ABS), Nylon, polyphenylene oxide (PPO), styrene-acrylonitrile (SAN), and polypropylene. The material of the case enables removal of thermal energy generated during operation of the battery.