Battery Module Sidewall Cooling Channels for Higher Energy Density
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Solution Overview
Problem
Conventional battery modules face limitations in energy density and heat dissipation efficiency due to the use of separate heatsinks and multiple conduction paths, which restricts their size and performance, especially in vertically constrained spaces like vehicles.
Innovation Solution
A battery module design featuring a module housing with embedded cooling channels in the sidewalls, allowing for direct heat emission without a heatsink, and a channel connection member for connecting multiple modules, enhancing coolant circulation and reducing leakage risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a separate heatsink is provided at lower or upper portion, then heat dissipation function is achieved, but the height of battery module increases and space is limited
Solution Approach 1:
The cooling channel is integrated directly into the sidewall structure of the module housing, merging the housing and cooling functions into a single component. This eliminates the need for separate heatsinks and reduces the overall height of the battery module while maintaining effective heat dissipation capability.
2Temperature
If heat is transferred via conduction regions of several members, then heat transfer path is established, but heat dissipation efficiency is greatly deteriorated
Solution Approach 1:
The cooling channel is extracted and embedded directly into the sidewall of the module housing, creating a dedicated heat transfer path that bypasses the inefficient multi-member conduction route. This direct integration eliminates thermal resistance at interfaces between separate components and significantly improves heat dissipation efficiency.
3Quantity of substance
If multiple secondary batteries are densely packed in narrow space, then capacity is increased, but heat dissipation becomes more difficult
Solution Approach 1:
The cooling channel is embedded within the sidewall structure, utilizing the vertical dimension of the housing wall for heat dissipation. This allows dense horizontal packing of batteries while maintaining effective heat removal through the sidewall cooling channels, resolving the conflict between battery density and 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
This design increases energy density, reduces manufacturing costs, and improves cooling efficiency by minimizing interference and stagnation, while allowing for more compact and efficient arrangement of battery modules.
Implementation Method 1
a module housing having at least one sidewall to accommodate the cell assembly in an inner space defined by the sidewall and having a cooling channel embedded in the sidewall
Implementation Method 2
allowing for direct heat emission without a heatsink, and a channel connection member for connecting multiple modules, enhancing coolant circulation
Data Source
AI summary
Disclosed is a battery module including a module housing capable of effectively increasing an energy density while improving the heat dissipation efficiency. The battery module includes a cell assembly having a plurality of secondary batteries; and a module housing having at least one sidewall to accommodate the cell assembly in an inner space defined by the sidewall and having a cooling channel embedded in the sidewall.