Liquid-Cooling Plate Structure for Rigid, Lightweight Battery Modules
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Solution Overview
Problem
Existing liquid-cooling heat dissipation systems for lithium battery modules face challenges in rigidity, heat dissipation efficiency, weight, and safety, particularly when used in electric vehicles, due to the addition of supporting members that increase weight and compromise the lightweighting trend.
Innovation Solution
A liquid-cooling heat dissipation plate made of a single piece of metal sheet, such as magnesium or aluminum alloy, with integrated heat dissipation pillars, engaged to form a liquid flow chamber, and welded using laser technology to enhance rigidity and heat exchange efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If supporting members are added to the liquid-cooling heat dissipation plate to improve rigidity, then the rigidity increases, but the weight increases
Solution Approach 1:
The patent merges the supporting members with the heat dissipation plate into a single integrated structure. The supporting members are not separate components but are formed as an integral part of the plate through a single molding process, eliminating the need for additional assembly while providing both structural support and heat dissipation functionality.
Solution Approach 2:
The supporting members serve dual functions: they provide mechanical rigidity to the heat dissipation plate while simultaneously acting as heat dissipation structures themselves. This multi-functionality reduces the need for separate components and minimizes overall weight.
2Productivity
If the heat dissipation area is increased to improve heat dissipation efficiency, then the heat dissipation efficiency improves, but the device complexity increases
Solution Approach 1:
The heat dissipation plate is segmented into multiple protruding heat dissipation structures that extend from the plate surface. These segmented structures increase the total heat dissipation area without requiring a completely complex redesign of the overall plate structure, as they are formed through a single molding process.
3Productivity
If the heat dissipation pillars are made taller to increase heat dissipation area, then the heat dissipation area increases, but the resistance to deformation decreases
Solution Approach 1:
The supporting members are strategically positioned at specific locations on the heat dissipation plate where they provide local reinforcement. This localized support structure enhances overall rigidity without requiring all heat dissipation pillars to be uniformly tall, allowing optimization of both heat dissipation area and structural strength.
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 solution provides improved heat dissipation efficiency, increased resistance to deformation, and enhanced safety by maintaining a larger heat dissipation area and uniform temperature distribution while reducing the risk of coolant leakage.
Implementation Method 1
The heat generated by the lithium battery is then taken away by the coolant and dissipated outside the battery module
Implementation Method 2
The coolant is used to circulate in the pipelines or flow channels of the heat dissipation device
Implementation Method 3
welded using laser technology to enhance rigidity and heat exchange efficiency
Data Source
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AI summary
A liquid-cooling heat dissipation plate (10, 20, 30, 40), including two heat dissipation components (100, 110, 120, 130, 140, 150) with a rectangular plate (101) having an inner surface (1011) and oppositely an outer surface (1012). Three edges of the inner surface (1011) are surrounded by a U-shaped frame (102) with predetermined heights, the inner surface (1011) has a plurality of heat dissipation pillars (103) protruding therefrom. The liquid-cooling heat dissipation plate is formed by joining and welding one of the heat dissipation components to the other with the inner surfaces (1011) facing to each other, resulting in formation of a liquid-flow chamber (L). At least one liquid inlet (105) is provided to allow a cooling fluid to enter the liquid-flow chamber (L), and at least one liquid outlet (106) is provided to allow the cooling fluid to exit the liquid-flow chamber (L), wherein the liquid inlet (105) and the liquid outlet (106) are arranged at the same side or different side of the liquid-cooling heat dissipation plate (10, 20, 30, 40).