Multi-Tab Electrode Assembly for Lower Battery Temperature Rise
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Solution Overview
Problem
Existing batteries face issues with high temperature rises due to limited current-carrying capacity, which can degrade battery and electronic product performance, especially with the increasing demands of 5G technology.
Innovation Solution
An electrode assembly with a multi-tab structure is introduced, comprising first, second, and third electrode plates with tabs connected in parallel, where the tabs are wound together with a separator to enhance current-carrying capacity and reduce temperature rise, utilizing materials like copper or nickel for the tabs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a two-tab structure is adopted, then the battery structure is simple, but the current-carrying capacity is limited and temperature rise is high
Solution Approach 1:
The battery structure is segmented from a traditional two-tab configuration into a multi-tab structure with multiple current collectors distributed across the electrode assembly. This segmentation allows current to be collected from multiple locations simultaneously, increasing the overall current-carrying capacity and reducing localized heat generation while maintaining structural simplicity through modular tab arrangement.
2Device complexity
If a two-tab structure is adopted, then the battery structure is simple, but the temperature rise is high
Solution Approach 1:
The multi-tab structure segments the current collection function across multiple tabs distributed throughout the electrode assembly. This segmentation creates multiple heat dissipation pathways and reduces current density at each individual tab, thereby reducing localized temperature rise and improving thermal management while keeping the overall battery structure relatively simple.
3Reliability
If multiple tab units are stacked to form multiple tabs, then the current-carrying capacity increases, but the manufacturing complexity increases
Solution Approach 1:
Multiple tab units are merged and stacked together to form integrated multi-tab structures. This merging approach allows the tabs to be formed and positioned simultaneously during the electrode assembly manufacturing process, rather than adding separate tabs later. The stacked tab units share common current collector layers, reducing the number of additional manufacturing steps required while achieving increased current-carrying capacity.
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 multi-tab structure effectively shunts current, increasing the battery's current-carrying capacity and reducing temperature rise, thereby improving the performance and reliability of portable electronic devices.
Implementation Method 1
the separator is disposed between the first electrode plate and the second electrode plate
Implementation Method 2
The plurality of tabs are connected in parallel to shunt a current to reduce a temperature rise of the electrode assembly
Data Source
AI summary
An electrode assembly, including a first electrode plate, a second electrode plate, and a separator. The electrode assembly is formed by winding the first electrode plate, the separator, and the second electrode plate. A first tab formed by a plurality of first tab units and a second tab formed by a plurality of second tab units are disposed on the first electrode plate, and a third tab formed by a plurality of third tab units is disposed on the second electrode plate. The electrode assembly is provided with a multi-tab structure to achieve purposes of enhancing a current-carrying capacity of the battery and reducing a temperature rise.