Electrode Assembly Tab Inlet Positioning for Battery Immersion
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Solution Overview
Problem
The existing manufacturing process for rechargeable batteries is time-consuming due to the slow immersion of active materials in the electrolyte solution.
Innovation Solution
The design includes an electrode assembly with primary and secondary electrodes, insulated by a plastic box-shaped insulator, where the electrolyte solution is introduced through an inlet located between the tab groups, allowing the solution to temporarily stay on the electrode assembly's surface and infiltrate the active materials via capillary action and gravity, reducing immersion time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the electrolyte solution is introduced through a conventional inlet position, then the structure is simple, but the immersion time of active material is long
Solution Approach 1:
The inlet is repositioned from a conventional location to a position between the tab groups on the facing surface of the electrode assembly. This spatial reconfiguration allows the electrolyte solution to access the electrode assembly from a previously underutilized dimension, enabling simultaneous infiltration from multiple surfaces and significantly reducing immersion time without adding mechanical complexity
2Productivity
If the electrolyte solution is introduced from one direction, then the structure is simple, but the infiltration efficiency is low
Solution Approach 1:
The electrode assembly is functionally segmented into regions with tab groups, and the inlet is positioned between these segments. This segmentation allows the electrolyte solution to infiltrate from multiple discrete entry points simultaneously, dividing the infiltration task across different regions and dramatically improving overall infiltration efficiency without requiring complex distribution mechanisms
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
This design significantly shortens the time required to immerse active materials in the electrolyte solution by allowing the solution to spread and infiltrate from multiple surfaces, improving the efficiency of the battery manufacturing process.
Implementation Method 1
infiltrate the active materials via capillary action and gravity
Implementation Method 2
infiltrate the active materials via capillary action and gravity
Data Source
AI summary
An electricity storage device includes an electrode assembly having primary electrodes and secondary electrodes, a case having a wall with an inlet, and an insulator. The electrode assembly has a facing surface facing the wall of the case. The primary electrodes have primary tabs protruding from one edge. The second electrodes have secondary tabs. The group of primary tabs and the group of secondary tabs each have a first side and a second side on the opposite sides. In each of the group of primary tabs and the group of secondary tabs, the first side faces the facing surface, and the second side is bent to face the wall of the case. The inlet is located at a position sandwiched regions of the wall onto which the primary tab group and the secondary tab group are projected when the wall is viewed from a direction perpendicular to the facing surface.