Hexahedral Battery Cell Multi-Face Coupling for Energy Density
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Solution Overview
Problem
The existing coupling methods for battery cells and modules limit the degree of freedom, leading to increased space loss and reduced energy density due to mechanical constraints, making it difficult to achieve a slimmer structure for battery packs.
Innovation Solution
A battery cell and module design featuring a hexahedral shape with two pairs of electrode leads or bus bars on four outer surfaces, allowing for block-coupling with different polarities to enhance coupling flexibility and minimize space loss, thereby improving energy density and enabling a slimmer structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional coupling methods with limited polarity directions are used, then the structure is simpler, but the degree of freedom of coupling is reduced and space loss increases
Solution Approach 1:
The battery cell structure is segmented into distinct functional components with electrode leads extending from multiple faces (at least two opposite faces). This segmentation allows independent connection points on different surfaces, enabling flexible coupling configurations without requiring complex integrated structures. The electrode leads are separated and positioned on specific faces, creating modular connection points that can be independently connected to battery modules.
Solution Approach 2:
The patent transitions from conventional two-dimensional coupling (limited to adjacent faces) to three-dimensional multi-face coupling. By providing electrode leads on at least two opposite faces of the battery cell, the invention enables coupling in multiple spatial dimensions simultaneously. This dimensional expansion allows battery modules to be connected in complex three-dimensional arrangements, significantly increasing coupling freedom while maintaining structural simplicity through standardized lead positions.
2Quantity of substance
If the number of battery cells or modules is increased, then the charge/discharge capacity or output voltage is improved, but space loss increases due to empty spaces among cells or modules
Solution Approach 1:
The patent merges multiple battery cells into battery modules with standardized configurations. By providing electrode leads on opposite faces and defining specific connection configurations, the invention enables tight integration of multiple cells into compact modules. This merging reduces the gaps and empty spaces between individual cells, allowing higher cell density within modules and more efficient space utilization when assembling battery packs with increased capacity.
3Loss of energy
If conventional battery cell coupling is used, then the manufacturing process is simpler, but the energy density is reduced due to increased space loss
Solution Approach 1:
The battery cell design provides universal coupling capability through standardized electrode lead positions on opposite faces. This universal configuration allows the same battery cell design to be coupled in multiple different arrangements (series, parallel, or combinations) without requiring different cell structures. The multi-functional electrode lead arrangement enables both simplified manufacturing through standardized processes and improved energy density through optimized spatial packing in various coupling configurations.
Data Source
AI summary
A battery cell, which includes an electrode assembly, a battery case configured to accommodate the electrode assembly, and two pairs of electrode leads provided at outer surfaces of the battery case and connected to the electrode assembly, is provided.