Cross-Tied Battery Cell for Current Distribution and Stress Reduction
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Solution Overview
Problem
Current two-electrode battery cell designs limit electrical and structural connections, leading to restricted current capacity, potential hot spots, and reduced battery life due to charge distribution and mechanical deformation issues.
Innovation Solution
The implementation of full perimeter electrode battery cells with alternating anode and cathode electrodes around the battery perimeter, along with conductive cross ties for both electrical and structural connections, allows for improved distribution of current and stress across the battery cell structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a two-electrode design is used in battery cells, then the structure is simple and easy to manufacture, but the current capacity is limited and hot spots occur during operation
Solution Approach 1:
The battery cell is segmented into multiple electrodes (at least three electrodes: first anode, first cathode, and second cathode) instead of using a traditional two-electrode design. This segmentation allows current to be distributed through multiple pathways, increasing current capacity and reducing hot spots while maintaining manufacturing feasibility through modular assembly
2Reliability
If multiple electrodes are arranged around the perimeter of the battery cell, then current distribution is improved and hot spots are reduced, but the device complexity increases
Solution Approach 1:
The electrodes are arranged in a spatial distribution around the perimeter of the battery cell rather than in a linear or planar configuration. This dimensional arrangement optimizes current distribution pathways and thermal management while managing complexity through geometric organization rather than increasing the number of connection points
3Reliability
If connection points are increased to improve current capacity, then more alignment points are required, but the manufacturing precision requirements increase
Solution Approach 1:
The collector tabs serve multiple functions: they collect current from multiple electrodes, provide structural support, and act as alignment features during assembly. This multi-functionality reduces the need for separate alignment mechanisms and maintains manufacturing precision while increasing current capacity
4Strength
If the battery cell structure is reinforced to handle mechanical deformations, then the structural strength is improved, but the weight increases
Solution Approach 1:
The battery cell uses a flexible pouch structure with integrated collector tabs that provide both structural support and electrical connection. This thin-film approach provides necessary mechanical strength to handle deformations while minimizing weight compared to traditional rigid housings
Data Source
AI summary
Systems, methods, and apparatus for a structurally cross-tied energy cell are disclosed. In one or more embodiments, a battery comprises a plurality of battery cells, each comprising an anode layer and a cathode layer. The battery further comprises a plurality of anode cross ties electrically connected to at least some of the anode layers of the battery. Further, the battery comprises a plurality of cathode cross ties electrically connected to at least some of the cathode layers of the battery. In one or more embodiments, the anode cross ties and the cathode cross ties run through all of the battery cells of the battery. In at least one embodiment, the anode cross ties and the cathode cross ties are manufactured from an electrical conductor material. In some embodiments, the anode cross ties and the cathode cross ties each comprise conductive protrusions, which are located external to the battery.