Battery Module Resin Coating Layout for Cell Heat Dissipation
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Solution Overview
Problem
Battery modules with multiple cells face challenges in heat dissipation, leading to performance deterioration and increased risk of explosion due to inadequate cooling, especially in high-temperature environments, as conventional heat dissipation coatings often fail to effectively cover the desired areas and can be excessive.
Innovation Solution
A battery module design featuring a thermally conductive resin layer with a zigzag coating pattern between the frame members and battery cell stack, ensuring optimal heat dissipation by minimizing coating amount and ensuring contact with all desired surfaces, including recessed lines adjacent to the edges for improved thermal conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat dissipation material is coated on the frame member to improve cooling performance, then heat dissipation efficiency is improved, but the coating may be excessively large or fail to cover desired areas due to structural reasons
Solution Approach 1:
The frame member is divided into multiple coating regions (first coating region on bottom surface, second coating region on inner surface of opened upper part) with different coating patterns. The zigzag-shaped coating lines create segmented heat dissipation paths that precisely cover desired areas without excessive coating material.
Solution Approach 2:
Different coating patterns are applied to different regions of the frame member. The zigzag-shaped coating lines in the second coating region provide enhanced heat dissipation at critical areas where battery cells are positioned, while the first coating region uses a different pattern suitable for its specific thermal requirements.
2Temperature
If the coating amount of heat dissipation material is increased to improve cooling performance, then heat dissipation efficiency is improved, but material usage increases and may cause structural issues
Solution Approach 1:
Instead of uniformly coating the entire frame member surface, the invention applies coating material selectively in zigzag patterns only where heat dissipation is most needed. This partial action approach achieves effective cooling while minimizing material usage by concentrating the coating on critical heat generation zones.
Solution Approach 2:
The coating pattern transitions from traditional linear or uniform coverage to a zigzag-dimensional pattern that covers more surface area within the same material budget. The zigzag lines create a more efficient spatial distribution of the coating material, maximizing heat dissipation surface without proportionally increasing material consumption.
3Ease of manufacture
If a conventional coating pattern is used for heat dissipation, then manufacturing is simple, but the coating cannot be applied to desired parts effectively
Solution Approach 1:
The zigzag coating pattern is pre-designed and pre-planned before the coating process begins. The coating lines follow predetermined zigzag paths that are optimized to cover specific target areas on the frame member, ensuring that the coating is applied precisely where needed without requiring complex real-time adjustments during manufacturing.
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 zigzag pattern enhances heat dissipation efficiency, reduces coating material usage, and stabilizes the battery module's performance by ensuring effective heat transfer from the cells, thereby extending lifespan and reducing explosion risks.
Implementation Method 1
a thermally conductive resin layer that is located between the first frame member and the battery cell stack
Data Source
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AI summary
A battery module according to one embodiment of the present disclosure includes: a battery cell stack in which a plurality of battery cells are stacked, a first frame member that houses the battery cell stack and has an opened upper part, a second frame member that covers the battery cell stack from an upper part of the first frame member, and a thermally conductive resin layer that is located between the first frame member and the battery cell stack, wherein the thermally conductive resin layer includes a plurality of coating lines extending long along a direction in which the plurality of battery cells are stacked.