Rotary Cell Infiltration for Faster Electrolyte Wetting
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Solution Overview
Problem
The slow infiltration rate of electrolytic solution in battery cells leads to longer infiltration times and reduced production efficiency, especially as battery size increases, causing safety hazards due to incomplete infiltration.
Innovation Solution
A rotary infiltration apparatus for columnar battery cells, featuring a battery placement mechanism that rotates the cells around their cylindrical axis, combined with a driving mechanism and adjustable rollers to ensure even infiltration, and a heating function to accelerate solution flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the battery size increases, then the battery capacity and energy density are improved, but the penetration path of the electrolytic solution becomes longer and the infiltration time increases
Solution Approach 1:
The patent applies the dynamics principle by rotating the battery cell around its cylindrical axis during the infiltration process. This dynamic motion transforms the static infiltration process into a dynamic one, allowing the electrolytic solution to reach all parts of the battery more efficiently despite the increased penetration path length in larger batteries
Solution Approach 2:
The patent introduces rotational motion as an additional dimension to the traditional linear infiltration process. By adding this rotational dimension, the electrolytic solution can penetrate the longer path in larger batteries more effectively, solving the time loss issue without compromising battery capacity
2Quantity of substance
If the compaction density of the electrode sheet increases, then the energy density of the battery is improved, but the penetration rate of the electrolytic solution decreases
Solution Approach 1:
The rotation of the battery cell during infiltration creates dynamic fluid motion that enhances the penetration rate. This dynamic approach allows the electrolytic solution to overcome the resistance from high compaction density electrode sheets more effectively, maintaining fast penetration while preserving high energy density
3Quantity of substance
If the battery size increases, then the battery capacity is improved, but the penetration rate of the electrolytic solution decreases
Solution Approach 1:
The patent uses rotational dynamics to maintain high penetration rates in larger batteries. The rotation creates centrifugal and convective effects that accelerate electrolytic solution movement through the longer paths required in high-capacity batteries, preventing penetration rate degradation
Solution Approach 2:
By adding rotational motion as another dimension to the infiltration process, the system can achieve both high battery capacity and maintained penetration rate. The rotational dimension creates multiple flow paths and reduces the effective linear distance the electrolyte must travel
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 solution significantly improves the penetration rate of the electrolytic solution, reducing infiltration time and enhancing production efficiency while ensuring complete infiltration of all parts within the battery cell, thus preventing safety hazards.
Implementation Method 1
a driving mechanism connected with the battery placement mechanism in a transmission way and driving the battery placement mechanism to drive the columnar battery cell to rotate around its cylindrical axis
Implementation Method 2
The roller is a heating roller. The heating roller is a roller with a heating function, and it is provided with an electric heating cell inside. The electric heating cell can heat the columnar battery cell on the battery placement mechanism to a certain extent, thereby accelerating flow of the electrolytic solution inside the columnar battery cell
Implementation Method 3
the electrolytic solution provided inside the battery cell moves in all directions, such that all parts inside the columnar battery cell can be fully infiltrated
Implementation Method 4
the electrolytic solution of the lithium-ion battery is fully infiltrated into all parts inside the battery cell
Data Source
AI summary
The present application is applicable to the field of battery production and manufacturing. It proposes a rotary infiltration apparatus for a columnar battery cell, including a battery placement mechanism and a driving mechanism, where the battery placement mechanism is configured to place a plurality of columnar battery cells to be infiltrated in an array, and the driving mechanism is connected with the battery placement mechanism in a transmission way and drives the battery placement mechanism to drive the columnar battery cell to rotate around its cylindrical axis. The present application significantly shortens time required for battery infiltration and effectively improves production efficiency of the columnar battery cell.