Battery Module Cooling Fin Layout for Uniform Cell Temperature
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Solution Overview
Problem
Existing battery modules experience temperature deviations due to non-uniform cooling, leading to performance issues in battery packs, as the side closer to the inlet port is cooled more effectively than the side closer to the outlet port in traditional cooling flow channels.
Innovation Solution
A battery module design featuring a battery cell laminate with cooling fins and manifolds, where the inlet and outlet ports of the cooling fins are alternately arranged to ensure uniform cooling performance, with each manifold divided into sections to facilitate efficient heat dissipation and coolant flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a traditional cooling flow channel with a single inlet and outlet is used, then the cooling structure is simple, but the temperature distribution becomes non-uniform with higher temperature deviation
Solution Approach 1:
The cooling flow channel is segmented into multiple independent channels, each with its own inlet and outlet ports. This segmentation allows the cooling system to divide and conquer the heat dissipation task, with each channel serving a specific region of the battery module, thereby achieving more uniform temperature distribution across the entire module.
Solution Approach 2:
Different regions of the battery module are assigned different cooling channels with optimized flow paths. The cooling system provides localized cooling solutions tailored to the specific thermal characteristics of each region, ensuring that areas with higher heat generation receive appropriate cooling attention, thus improving overall temperature uniformity.
2Area of stationary object
If cooling water flows through a long channel from inlet to outlet, then the cooling coverage is comprehensive, but the cooling efficiency decreases due to temperature rise of cooling water
Solution Approach 1:
The single long cooling channel is divided into multiple shorter channels. Each channel has a limited length, preventing the cooling water from undergoing excessive temperature rise. This segmentation maintains higher cooling efficiency in each channel while collectively covering the entire battery module area through the network of channels.
Solution Approach 2:
The cooling system transitions from a one-dimensional linear flow path to a two-dimensional distributed network of channels. By arranging multiple channels in parallel across different regions, the system achieves comprehensive coverage without requiring any single channel to be excessively long, thereby maintaining cooling efficiency throughout.
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 achieves uniform cooling across the battery module, enhancing overall performance and reducing temperature deviations, thereby improving the reliability of battery packs.
Implementation Method 1
cooling fins interposed between the battery cells, and a first cooling manifold and a second manifold connected to the cooling fins
Implementation Method 2
a cooling flow channel capable of producing a uniform cooling effect needs to be designed
Data Source
AI summary
A battery module, according to an embodiment of the present disclosure includes a battery cell laminate having a plurality of battery cells stacked along a stacking direction, cooling fins interposed between the battery cells, and first and second cooling manifolds connected to the cooling fins. The cooling fins include a first cooling fin having a first inlet and a first outlet and a second cooling fin having a second inlet and a second outlet, where the first inlet and the second outlet are connected to the first cooling manifold, and the second inlet and the first outlet are connected to the second cooling manifold.