Battery Module Through-Case Cooling for Thermal Runaway Prevention
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Solution Overview
Problem
Secondary batteries generate heat during discharge and charge, which can lead to thermal runaway and potential fires, necessitating improved heat dissipation solutions.
Innovation Solution
A battery module design featuring a first case with through regions and heat conducting members that contact the battery cells, and a second case made of a thermally conductive material, allowing for efficient heat dissipation through increased contact area and use of heat conducting members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat conducting members are added between battery cells and the case, then heat dissipation performance is improved, but device complexity increases
Solution Approach 1:
Heat conducting members are introduced as intermediary components between the battery cells and the second case to facilitate thermal energy transfer. These members act as thermal mediators that conduct heat from the battery cells to the case, improving heat dissipation while maintaining a relatively simple overall structure through the use of straightforward thermal conduction principles.
2Temperature
If the contact area between heat conducting members and battery cells is increased, then heat dissipation efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The heat conducting members are divided into multiple separate components, each positioned to contact specific battery cells or regions. This segmentation allows for modular assembly where each heat conducting member can be independently positioned and secured, reducing the overall manufacturing precision requirements compared to a single large contact surface while still achieving sufficient total contact area 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 design enhances heat dissipation by increasing the contact area between heat conducting members and battery cells, effectively reducing temperature and preventing thermal runaway.
Implementation Method 1
a first heat conducting member between the first battery cell and the second case... heat dissipation by increasing the contact area between heat conducting members and battery cells
Data Source
AI summary
A battery module includes: a first battery cell; a first case to accommodate the first battery cell, and having a first through region to expose a portion of a surface of the first battery cell therethrough; a second case to accommodate at least a portion of the first case; and a first heat conducting member between the first battery cell and the second case.