Pouch Battery Cell Terminal Frames for Stackable Pack Connections
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Solution Overview
Problem
The manufacturing process of battery packs using secondary battery cells is complicated and inefficient due to the need for additional components, such as electrical connections, which can cause space loss, increased manufacturing costs, and decreased productivity, particularly when using pouch-type battery cells.
Innovation Solution
A battery cell design featuring conductive frames on both surfaces of the cell case, with terminal portions that overlap and electrically connect when stacked, eliminating the need for external electrical connection components and maintaining sealing integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If additional electrical connection components are applied to pouch-type battery cells to manufacture high capacity/high output battery packs, then the electrical connection capability is improved, but the manufacturing complexity and component quantity increase
Solution Approach 1:
The patent merges the electrical connection function with the terminal structure by integrating conductive frames directly into the battery cell terminals. The conductive frames are formed as integral parts of the terminal assembly, combining multiple functions (electrical connection, structural support, and terminal function) into a single integrated component, thereby reducing the number of separate electrical connection components needed
Solution Approach 2:
The conductive frames serve multiple functions simultaneously: they provide electrical connection between battery cells, act as structural support elements, and function as the terminal interface. This multi-functionality eliminates the need for separate electrical connection components, reducing both manufacturing complexity and component quantity while maintaining high power capability
2Adaptability or versatility
If separate external terminal components are applied to pouch-type battery cells, then the terminal functionality is improved, but space loss and manufacturing cost increase
Solution Approach 1:
The terminal structure merges the external terminal function with the conductive frame assembly. The conductive frames are integrated into the terminal region, eliminating the need for separate external terminal components. This integration reduces space occupation while maintaining full terminal functionality for electrical connections
3Power
If terminal components are applied to battery cells, then the electrical connection capability is improved, but the sealing force of the cell case may be weakened
Solution Approach 1:
The patent applies local quality by providing reinforcement structures specifically at the terminal regions where components are attached. The cell case includes reinforced portions at the terminal regions that maintain sealing force despite the presence of terminal components. This localized reinforcement ensures that the overall sealing integrity is preserved while allowing terminal functionality
Data Source
AI summary
A battery cell includes an electrode assembly, a cell case, a first conductive frame, and a second conductive frame. The electrode assembly has a cell body and an electrode tab extending from the cell body and the cell case has an accommodation portion configured to accommodate the electrode assembly and a peripheral portion extending outward from the accommodation portion. The first conductive frame is located on a first surface of the peripheral portion and electrically connected to the electrode tab through the peripheral portion. The second conductive frame is located on a second surface of the peripheral portion and electrically connected to the electrode tab through the peripheral portion. A battery pack including the same is also provided.