Battery Module Heat Pipe Structure for Adjacent Cell Thermal Isolation
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Solution Overview
Problem
Existing battery modules do not effectively mitigate the heat influence from one battery cell to adjacent cells, leading to potential adverse effects.
Innovation Solution
A battery module design incorporating a heat pipe between adjacent battery cells, with the heat pipe contacting at least one surface of each cell and potentially differing positions on opposite surfaces, connected to a heat diffusion plate and cooler for efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If battery cells are arranged adjacent to each other in a battery module, then the battery module achieves compact structure and high energy density, but heat generated in one cell directly affects adjacent cells causing thermal propagation
Solution Approach 1:
A heat pipe is introduced as an intermediary component between adjacent battery cells. The heat pipe selectively conducts heat away from cells that generate excessive heat while insulating cells that are already cool, thereby preventing thermal propagation without requiring large spacing between cells. This resolves the contradiction by enabling compact cell arrangement while actively managing heat transfer pathways.
Solution Approach 2:
The heat pipe is selectively applied to specific battery cells based on their thermal characteristics. Cells prone to generating excessive heat receive heat pipes for active cooling, while other cells maintain normal insulation. This localized approach allows compact cell arrangement while针对性地 addressing heat management needs of specific cells, preventing thermal propagation without compromising energy density.
2Object-affected harmful factors
If heat insulation material is used between battery cells, then heat propagation is reduced, but the battery module volume increases and energy density decreases
Solution Approach 1:
The heat pipe serves as an active thermal intermediary that replaces passive heat insulation material between cells. Instead of blocking heat transfer with insulation, the heat pipe actively manages heat by conducting it away from cells that need cooling while allowing or blocking heat transfer to cells that don't need it, based on thermal conditions. This eliminates the need for bulky insulation while maintaining compact cell spacing and high energy density.
Solution Approach 2:
The system dynamically changes thermal conduction parameters by selectively applying heat pipes to specific cells based on their heat generation characteristics. This parameter-based approach allows the battery module to maintain high energy density through compact cell spacing while actively controlling heat propagation pathways, replacing the need for uniform heat insulation material that would increase volume.
3Object-affected harmful factors
If heat pipe is disposed between adjacent battery cells, then heat from one cell is transferred away reducing thermal propagation, but device complexity increases
Solution Approach 1:
The heat pipe is positioned between adjacent battery cells to act as a thermal mediator. It selectively conducts heat away from cells generating excessive heat while preventing heat transfer from cells that are already cool, thereby reducing thermal propagation risk. This intermediary approach manages thermal issues effectively while maintaining a relatively simple module structure compared to alternative active cooling systems.
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 heat pipe effectively transfers heat from a target cell to a cooler, reducing the heat impact on adjacent cells and preventing chain reactions, thereby stabilizing the battery pack.
Implementation Method 1
a heat pipe disposed between the first battery cell and the second battery cell and disposed in contact with at least the first battery cell
Implementation Method 2
heat generated in the target battery cell (first battery cell) can be released into the cooler by the heat pipe
Data Source
AI summary
Reduce thermal effects on adjacent battery cells. A first battery cell, a second battery cell adjacent to the first battery cell, and a heat pipe disposed between the first battery cell and the second battery cell and disposed in contact with at least the first battery cell, comprising.