Battery Heat Exchanger with Oval Pillars for Uniform Cell Cooling
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Solution Overview
Problem
Existing battery cooling systems struggle to efficiently dissipate heat from battery cells while minimizing temperature differences between multiple cells, leading to performance degradation and reduced lifespan due to electrolyte decomposition.
Innovation Solution
A battery heat exchanger design featuring an upper and lower plate with a flow path and oval pillars protruding from the plates, which enhance heat dissipation and minimize temperature variations by optimizing fluid flow and pressure loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional cooling systems are used, then cooling function is provided, but heat dissipation efficiency is insufficient and temperature differences between cells cannot be minimized
Solution Approach 1:
The patent employs oval-shaped pillars instead of conventional straight or rectangular structures within the cooling channels. These curved oval pillars optimize fluid flow patterns, reduce turbulence, and enhance heat transfer efficiency between the battery cells and cooling medium, thereby improving heat dissipation while minimizing temperature variations across the battery pack.
Solution Approach 2:
The patent modifies geometric parameters of the cooling structure by introducing oval pillars with specific aspect ratios and dimensions. By changing the shape parameters from conventional forms to optimized oval configurations, the system achieves improved heat dissipation performance and more uniform temperature distribution across battery cells.
2Temperature
If cooling structures are added to dissipate heat, then temperature control is improved, but pressure loss in the cooling system increases
Solution Approach 1:
The oval-shaped pillars create smoother flow paths compared to sharp-edged conventional structures. The curved geometry reduces flow separation and turbulence, minimizing pressure losses while maintaining effective heat dissipation. This allows the system to control battery temperature without excessive energy loss to overcoming flow resistance.
3Power
If multiple battery modules are used to increase capacity, then power output is improved, but temperature differences between modules increase
Solution Approach 1:
The cooling system is divided into multiple independent cooling channels, each serving specific battery modules. The oval pillars are distributed throughout these segmented channels, ensuring that each module receives optimized cooling. This segmentation approach allows simultaneous cooling of multiple high-power modules while maintaining uniform temperature distribution across the entire battery pack.
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 allows for rapid heat dissipation and reduced pressure loss, maintaining battery performance and extending its lifespan by minimizing temperature differences between cells.
Implementation Method 1
a flow path body portion (44) forming a flow path (P) through which a cooling fluid (W) flows
Implementation Method 2
a pillar (7) positioned in the flow path (P), protruding from at least one of the upper plate (3) or the lower plate (4)
Data Source
AI summary
A battery heat exchanger comprises; an upper plate which dissipates heat from a battery; a lower plate having a bonded body portion bonded to the bottom surface of the upper plate and a flow path body portion forming a flow path through which a cooling fluid is guided; an inlet body which guides the cooling fluid to the flow path; an outlet body through which the cooling fluid after passing through the flow path is discharged; and a plurality of columns which protrude from at least one of the upper plate and the lower plate to be located in the flow path and each have the outer circumference spaced apart from the side wall of the flow path body portion, wherein the plurality of columns are formed along the flow path, at least one of the plurality of columns is an elliptical column having an elliptical cross-sectional shape, and the elliptical pillar is lengthily formed in the lengthwise direction of the flow path.