Battery Standing Capsule Heating for Faster Electrolyte Infiltration
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Solution Overview
Problem
The process of electrolyte infiltration in batteries is slow under natural conditions, leading to prolonged production times and reduced efficiency.
Innovation Solution
A method involving an electrolyte injection capsule and a battery standing device that uses an auxiliary energizing mechanism to heat the battery, combined with a positive-negative pressure circulating mechanism to vacuumize and introduce nitrogen alternately, facilitating rapid electrolyte infiltration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery is allowed to stand under natural conditions for electrolyte infiltration, then the electrolyte can fully infiltrate the battery cell interior, but the infiltration process takes a long time which reduces production efficiency
Solution Approach 1:
The patent applies parameter changes by heating the battery to elevated temperatures (e.g., 40-80°C) during the standing process. This temperature parameter change increases the mobility of electrolyte molecules and accelerates diffusion into the battery cell interior, thereby reducing infiltration time while maintaining complete saturation. The heating mechanism transforms the natural slow infiltration process into an accelerated thermal-assisted infiltration process.
Solution Approach 2:
The patent implements periodic action through alternating vacuum and pressure cycles during the standing process. The vacuum phase removes air bubbles and creates negative pressure to draw electrolyte into the battery, while the pressure phase forces additional electrolyte infiltration and removes trapped gases. This periodic vacuum-pressure cycling repeats multiple times to ensure complete and rapid infiltration, significantly reducing the required standing time compared to static natural infiltration.
2Speed
If heating is applied to accelerate electrolyte infiltration, then the infiltration speed increases, but additional equipment and energy consumption are required
Solution Approach 1:
The patent merges the heating function with the existing battery standing frame structure. The heating elements (such as heating plates or heating chambers) are integrated into the standing frame design, allowing the same equipment to perform both the standing/infiltration function and the heating function. This combination eliminates the need for separate heating devices and reduces overall equipment complexity while achieving accelerated infiltration through temperature elevation.
3Productivity
If vacuum and pressure cycling is used to enhance electrolyte infiltration, then the infiltration efficiency improves, but the device complexity increases
Solution Approach 1:
The patent designs the vacuum-pressure cycling mechanism to serve multiple functions: it not only accelerates electrolyte infiltration but also removes air bubbles from the battery cell, ensures complete electrode saturation, and can be applied to different battery types and sizes. The same vacuum-pressure system is used across various production scenarios, making the added complexity worthwhile due to its versatile application and significant productivity improvement.
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 method allows for rapid and complete infiltration of electrolyte into battery cells, enhancing production efficiency by utilizing high temperature and alternating pressure cycles.
Implementation Method 1
connecting the auxiliary energizing mechanism on the standing cavity with a power supply to supply power to a heating plate of the electrolyte injection capsule, and energizing the heating plate to heat the battery in the electrolyte injection capsule
Implementation Method 2
connecting the positive-negative pressure circulating mechanism on the standing cavity with a vacuumizing device, and vacuumizing an interior of the electrolyte injection capsule
Implementation Method 3
introducing nitrogen through the positive-negative pressure circulating mechanism by the vacuumizing device alternately to vacuumize an interior of the battery in the electrolyte injection capsule and introduce nitrogen alternately
Data Source
AI summary
A battery standing method comprises the following steps: S1: putting a battery subjected to electrolyte injection into an electrolyte injection capsule, and then transferring the capsule and the battery in the to a first transfer conveying line; S2: conveying the capsule and the battery in the capsule to a standing unit through the first transfer conveying line; S3: transporting the capsule on the first transfer conveying line and the battery in the capsule into a standing cavity of the standing unit, and electrically connecting an auxiliary energizing mechanism on the standing cavity with a positive electrode probe and a negative electrode probe of the capsule; and S4: connecting the auxiliary energizing mechanism on the standing cavity with a power supply to supply power to a heating plate of the capsule, and energizing the heating plate to heat the battery in the capsule.