Helical Flow Disturbance in Battery Cooling Plates for Turbulent Heat Exchange
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Solution Overview
Problem
The existing serpentine liquid cooling plates for power batteries face challenges in forming turbulent flows due to high cooling liquid flow rates at the inlet, and the limited heat exchange area within the cavities results in low heat exchange efficiency.
Innovation Solution
The introduction of a single helical flow disturbance member within the flow channels of the liquid cooling plate creates a strong turbulent flow, enhancing the heat exchange efficiency by increasing the contact area between the cooling liquid and the flow disturbance member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a serpentine liquid cooling plate with square regular cavities is used, then the structural strength is improved, but the heat exchange efficiency deteriorates due to limited heat exchange area and inability to form turbulent flow
Solution Approach 1:
The patent introduces a helical flow disturbance member with curved spiral structure into the cooling channels, replacing the straight linear flow path. This curved structure creates centrifugal forces and turbulent flow patterns that significantly enhance heat exchange efficiency while maintaining the overall serpentine plate structure for structural strength
2Speed
If cooling liquid flows at high speed through the flow channel, then the pressure drop is reduced, but turbulent flow cannot be formed resulting in low heat exchange efficiency
Solution Approach 1:
The patent transforms the static straight cooling channels into dynamic spiral channels with the flow disturbance member. This creates continuously changing flow directions and centrifugal forces that generate turbulent flow even at high flow rates, converting high-speed laminar flow into effective turbulent heat exchange flow
3Ease of manufacture
If the flow channel uses simple square cavities, then the manufacturing complexity is reduced, but the heat exchange area is limited resulting in low cooling performance
Solution Approach 1:
The patent adds a third dimension by introducing the helical flow disturbance member that extends through the depth of the cooling plate. This transforms the two-dimensional square cavity into a three-dimensional spiral flow path, dramatically increasing the effective heat exchange area and creating turbulent flow patterns without complicating the basic plate structure
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 implementation of the single helical flow disturbance member significantly increases the heat exchange efficiency of the liquid cooling plate by promoting turbulent flow and enhancing the contact area, thereby improving the cooling performance of power batteries.
Implementation Method 1
a relatively strong turbulent flow is formed by the single helical structure after cooling liquid enters the flow channel, thereby increasing the heat exchange efficiency
Implementation Method 2
the heat conduction area inside the serpentine liquid cooling plate is relatively small, resulting in low heat exchange efficiency
Implementation Method 3
flows in the flow channel and forms convection heat exchange with a cell
Data Source
AI summary
A liquid cooling plate, comprising a liquid cooling plate body and a flow disturbance member; the liquid cooling plate body extends along a first direction, and a side surface of the liquid cooling plate body is a curved surface or a flat surface, wherein the side surface of the liquid cooling plate body conforms with a side wall of a cell; a plurality of flow channels extending along the first direction are provided inside the liquid cooling plate body, and the flow disturbance member is provided in each of the plurality of flow channels; the flow disturbance member has a single helical structure and extends along the first direction. The liquid cooling plate structure provided in the present application can improve the heat exchange efficiency of the liquid cooling plate.