Battery Module Compression Pad for Thermal Runaway Blocking
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Solution Overview
Problem
Existing battery modules and packs face challenges in maintaining structural stability during thermal events, as thermal runaway in one cell can propagate to adjacent cells, leading to potential ignition or explosion, causing significant damage.
Innovation Solution
Incorporating a compression pad assembly with insulating materials and hollow portions between battery cells to delay flame spread and suppress thermal runaway propagation, using a metal frame and ceramic coating for enhanced heat blocking and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a battery module uses a large number of battery cells, then the output power and energy are improved, but the module size and weight increase
Solution Approach 1:
The patent implements a nested structure where battery cells are arranged in multiple layers within the module, with each layer containing multiple cells. This nested arrangement allows maximizing the number of cells within a compact volume, thereby increasing output power and energy without proportionally increasing module size and weight.
2Power
If a battery module uses a large number of battery cells, then the output power and energy are improved, but the module volume increases
Solution Approach 1:
The nested multi-layer arrangement of battery cells enables dense packing within the module volume. By organizing cells in vertical and horizontal layers that nest within each other, the design achieves high cell density, maximizing power output within a minimized module volume.
Solution Approach 2:
The patent transitions from a single-layer planar arrangement to a multi-dimensional nested structure with cells arranged in multiple layers and positions. This dimensional expansion allows fitting more cells into the same footprint area, increasing power output without proportionally increasing the module's external dimensions.
3Power
If battery cells are densely packed to increase power density, then the power output is improved, but heat dissipation becomes more difficult
Solution Approach 1:
The patent incorporates localized heat dissipation features at specific positions within the module, such as thermal vias, heat sinks, or cooling channels strategically placed near high-heat-generation areas. This local quality approach ensures effective heat removal from critical regions while maintaining dense cell packing for high power output.
Solution Approach 2:
The patent introduces thermal management components as intermediaries between the battery cells and the external environment. These intermediaries (such as thermal interface materials, heat spreaders, or cooling plates) facilitate efficient heat transfer from the densely packed cells to cooling systems, enabling high power density while maintaining acceptable temperature levels.
Data Source
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AI summary
Provided are a battery module configured to ensure structural stability even when a thermal event occurs, a battery pack, and a vehicle including the battery pack. A battery module includes a cell assembly including a plurality of battery cells, and a compression pad assembly located between the plurality of battery cells, the compression pad assembly including a heat blocking unit in which at least one hollow portion is formed.