Overlapping Cooling Tube Structure for High-Power Battery Modules
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Solution Overview
Problem
Existing battery packs face inefficiencies in cooling due to limited heat dissipation, leading to rapid temperature increases that can cause cell deterioration, ignition, or explosion, particularly in high-power applications like vehicles.
Innovation Solution
A battery pack design incorporating a cooling tube assembly that overlaps with the battery module, featuring injection and discharge cooling tubes, and a fixing frame to enhance space utilization and coolant flow efficiency, with insulating coolant directly cooling the cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple battery cells are connected in series and/or parallel to increase power and capacity, then high output is achieved, but heat generation increases and cooling becomes difficult
Solution Approach 1:
The cooling tube assembly extends along the stacking direction of battery cells (vertical dimension), enabling coolant to flow through multiple cooling sections at different heights. This three-dimensional cooling approach allows heat dissipation from multiple battery cells simultaneously, addressing the heat generation problem in high-power battery packs without compromising power output.
Solution Approach 2:
The cooling tube assembly is divided into multiple cooling sections, with each section equipped with cooling plates that contact specific battery cells. This segmentation allows independent cooling zones for different battery cells, enabling precise temperature control and efficient heat dissipation across the entire battery pack while maintaining high power output.
2Reliability
If conventional cooling structures are used with separate connection parts, then cooling function is provided, but space loss occurs at coolant connections
Solution Approach 1:
The connection part is merged with the cooling tube assembly, forming an integrated structure where the connection part serves as both a structural component and a coolant flow path. This eliminates the need for separate connection components and reduces space loss at coolant connections while maintaining effective cooling function.
Solution Approach 2:
The cooling tube assembly performs multiple functions: it serves as a structural support component, a coolant flow channel, and a heat dissipation device. The connection part similarly functions as both a structural element and a fluid conduit, reducing the overall space required for cooling system components.
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
Improves space utilization and cooling efficiency by minimizing space loss at coolant connections, reducing the risk of temperature-related issues and enhancing the lifespan and safety of battery packs.
Implementation Method 1
a cooling tube assembly that is mounted within the pack housing, wherein one end of the battery module is disposed to overlap with the cooling tube assembly
Data Source
AI summary
A battery pack includes a battery module, a pack housing on which at least one battery module is mounted, and a cooling tube assembly that is mounted within the pack housing. The battery module includes a cell assembly formed by stacking a plurality of battery cells, and a module frame for housing the cell assembly. One end of the battery module overlaps with the cooling tube assembly.