Multi-Layer TIM Structure for Battery Cell Heat Dissipation
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Solution Overview
Problem
Conventional battery packs face complex manufacturing procedures and errors in embedding heat conductive rods, leading to inefficient heat dissipation and potential manufacture failures.
Innovation Solution
A multi-layered thermal interface material structure is introduced, comprising a layer structure with supporting mesh plates and thermal interface materials, which is sandwiched between rows of battery cells to enhance heat dissipation and support, featuring a top and bottom surface with concave portions and a middle layer of thermal conductive fillers, allowing for improved assembly and heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat conductive rods and conductive fillers are used in conventional battery packs, then heat dissipation is improved, but manufacturing complexity increases and manufacturing precision deteriorates
Solution Approach 1:
The patent combines multiple heat dissipation components (heat conductive rods, conductive fillers, and thermal interface materials) into an integrated multi-layered thermal interface material structure. This structure includes a first thermal interface material layer, a heat conductive rod embedded therein, a second thermal interface material layer, and a conductive filler, all forming a unified assembly that simplifies manufacturing while maintaining effective heat dissipation between battery cells.
2Temperature
If heat conductive rods are embedded in spacing regions, then heat dissipation is improved, but manufacturing precision deteriorates due to positioning errors
Solution Approach 1:
The heat conductive rod is pre-embedded into the first thermal interface material layer during the manufacturing process, before the complete assembly is installed between battery cells. The multi-layered structure is pre-assembled with proper positioning, ensuring accurate placement without requiring precise positioning during final installation between battery cells.
3Temperature
If multiple heat conductive components are used, then heat dissipation is improved, but reliability deteriorates due to manufacturing failures
Solution Approach 1:
The patent integrates multiple heat dissipation components into a single multi-layered thermal interface material structure assembly. By combining the heat conductive rod, thermal interface materials, and conductive filler into one integrated unit, the patent eliminates the need for separate installation steps that could fail, thereby improving manufacturing reliability while maintaining 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 multi-layered thermal interface material structure simplifies the assembly process, reduces manufacturing errors, and enhances heat dissipation efficiency by providing a soft, malleable, and supportive layer that effectively manages heat between battery cells, leading to improved battery pack performance.
Implementation Method 1
a multi-layered thermal interface material structure... sandwiched between rows of battery cells to enhance heat dissipation
Data Source
AI summary
A multi-layered thermal interface material (TIM) structure is adopted for being sandwiched between adjacent two rows of battery cells of a battery module. The multi-layered TIM structure includes a layer structure having a top surface and a bottom surface, of which the top surface and the bottom surface both include a plurality of concave portions. Moreover, there are two supporting mesh plates buried in the layer structure for making the layer structure simultaneously possess advantages of softness, good malleability and good support capability.