Battery Cooling Plate Structure for Fast-Charging Heat and Expansion
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Solution Overview
Problem
Existing cooling structures for battery cells, such as cooling plates at the bottom, are inadequate for dissipating heat during fast charging, leading to overheating and structural instability.
Innovation Solution
A cooling component with a cooling side plate thermally connected to battery cells, featuring flow channels for heat dissipation and a buffer cavity to accommodate expansion, ensuring both effective heat dissipation and structural stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling plate is placed at the bottom of battery cells to dissipate heat, then heat dissipation is achieved, but the heat dissipation effect is average and insufficient for fast charging requirements
Solution Approach 1:
The patent transitions from single-point bottom cooling to multi-dimensional cooling by adding side cooling plates that contact the side surfaces of battery cells. This dimensional expansion allows heat to be dissipated from multiple surfaces simultaneously, significantly improving the overall heat dissipation effect and enabling faster charging rates.
2Temperature
If cooling plates are used for heat dissipation, then heat is removed from battery cells, but the battery cell structure may deform due to thermal expansion without adequate buffer space
Solution Approach 1:
The patent incorporates buffer cavities within the cooling side plates that are positioned to accommodate thermal expansion of battery cells before deformation occurs. This pre-designed cushioning space prevents structural damage by allowing controlled expansion during heating cycles while maintaining overall structural stability.
3Device complexity
If only bottom cooling is implemented, then the structure is simple, but the heat dissipation capacity is insufficient for high-power charging applications
Solution Approach 1:
The patent merges bottom cooling and side cooling functions into an integrated cooling system. The cooling bottom plate and cooling side plates work together as a unified structure, combining multiple cooling surfaces to achieve high heat dissipation capacity while maintaining reasonable structural simplicity through integrated design.
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 multi-faceted heat dissipation and structural support for battery cells, preventing deformation and enhancing stability during fast charging.
Implementation Method 1
the cooling side plate abuts on and is thermally conductively connected to one side of the whole of the battery cells
Implementation Method 2
each cooling flow channel is configured to circulate cooling medium
Data Source
AI summary
The present application provides a cooling component and a battery pack. The cooling component include: a cooling bottom plate supporting bottoms of a battery cell; and a cooling side plate bent and connected to one side of the whole of the cooling bottom plate, and the cooling side plate abuts on and is thermally conductively connected to one side of the battery cell. The cooling side plate includes a flow channel part and a buffered part. The flow channel part is provided with one or more cooling flow channels. Each cooling flow channels is configured to circulate the cooling medium. The buffered part is provided with a buffer cavity, and the buffer cavity extends along a length direction of the cooling side plate.