Pouch Cell Case with Aluminum Covers and Cooling Passages
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Solution Overview
Problem
Existing solutions for pouch type cells in high output battery modules fail to provide stable protection and effective heat dissipation, leading to vulnerability under external impacts and reduced performance due to lack of cooling passages between support frames.
Innovation Solution
A case design featuring two aluminum covers with curved stack portions and a partition with a buffer pad to prevent short circuits, providing enhanced structural support, heat dissipation, and stable fixation of pouch type cells, while allowing for cooling passages between stacked modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pouch type cells are stacked and connected using a PCB according to the related art, then the battery module can be assembled, but the pouch type cells are not stably protected and are vulnerable to external impacts
Solution Approach 1:
The case is divided into an upper case body and a lower case body that are separable, with the pouch type cell inserted between them. This segmentation allows for simpler assembly while providing stable protection, as the pouch cell is clamped firmly between the two case halves rather than requiring complex internal support structures.
Solution Approach 2:
The electrode tabs of the pouch type cell are directly connected to the case structure, merging the connection function into the case itself. This eliminates the need for separate PCB connections and provides more stable mechanical support for the pouch cell while reducing assembly complexity.
2Strength
If a rigid case is used to protect pouch type cells, then structural stability is improved, but heat dissipation performance is reduced due to lack of cooling passages
Solution Approach 1:
The case structure incorporates localized cooling passages within the upper and lower case bodies, providing heat dissipation functionality at specific locations without compromising the overall rigid structure. The cooling passages are integrated into the case walls, allowing the case to maintain structural stability while enabling effective heat removal from the pouch type cell.
3Ease of manufacture
If pouch type cells are stacked without adequate support, then assembly is simple, but the cells are not stably fixed and heat dissipation is reduced
Solution Approach 1:
The upper and lower case bodies are designed with pre-formed cooling passages and structural features that automatically provide stable fixation when assembled. The case structure is prepared in advance with the necessary geometric features to clamp and position the pouch type cell securely, eliminating the need for additional fixation components while maintaining assembly simplicity.
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 case design significantly improves heat dissipation and structural stability, extending the lifespan of pouch type cells by applying appropriate surface pressure and preventing short circuits, resulting in a more reliable and efficient battery module.
Implementation Method 1
two sheets of aluminum covers that support external surfaces of the pouch of two pouch type cells that are stacked
Data Source
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AI summary
Provided is a case of pouch type cells, which is capable of stably protecting pouch type cells constituting a secondary battery used as a high power supply, and having excellent heat dissipation performance.