Electrolyte Wetting Agent for Fast Battery Filling
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Solution Overview
Problem
Current manufacturing processes for large format lithium-ion batteries are time-consuming and not cost-effective due to the slow electrolyte filling process, limiting the production of high-capacity batteries for applications like electric vehicles and energy storage.
Innovation Solution
The use of a wetting agent in the electrolyte, combined with vacuum filling, allows for faster and more homogeneous filling of electrolyte between the anode and cathode, reducing filling time and enabling the production of larger format batteries with smaller electrode distances and reduced material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional electrolyte filling methods are used, then the filling process is simple, but the filling time is too long for large format batteries
Solution Approach 1:
A wetting agent is introduced as an intermediary substance in the electrolyte composition. This wetting agent reduces surface tension and improves electrolyte distribution throughout the cell, enabling faster and more uniform filling of large format batteries without requiring complex filling equipment or procedures
Solution Approach 2:
The chemical composition parameters of the electrolyte are modified by adding specific wetting agents. This changes the physical properties of the electrolyte (surface tension, wetting characteristics) to enable rapid infiltration into the electrode structure, dramatically reducing filling time for large format cells
2Manufacturing precision
If electrolyte is filled quickly without wetting agents, then filling time is reduced, but homogeneous distribution is not achieved
Solution Approach 1:
The wetting agent acts as a mediator that facilitates uniform electrolyte distribution throughout the cell. It modifies the interaction between electrolyte and electrode materials, ensuring complete and homogeneous penetration even during rapid filling processes, eliminating the need for prolonged filling times
Solution Approach 2:
By changing the chemical composition of the electrolyte to include wetting agents, the physical parameters such as surface tension and contact angle are modified. This enables the electrolyte to rapidly and uniformly distribute throughout the cell structure, achieving both speed and homogeneity
3Quantity of substance
If large format batteries are manufactured, then capacity is increased, but filling time increases significantly
Solution Approach 1:
The wetting agent serves as an intermediary that enables rapid electrolyte distribution in large format cells. By improving wetting characteristics, it allows the electrolyte to quickly penetrate the larger electrode volumes and distances, maintaining fast filling speeds even as cell size and capacity increase
Solution Approach 2:
The electrolyte composition is modified with wetting agents to change its physical properties. This enables the electrolyte to rapidly infiltrate large electrode structures with small distances between electrodes, allowing large format batteries to be filled quickly despite their increased capacity requirements
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 method significantly reduces electrolyte filling time, ensures homogeneous distribution without bubbles, and facilitates the mass production of large format lithium-ion batteries with high capacities, making them suitable for larger applications.
Implementation Method 1
The electrolyte comprises at least one conductive salt comprising lithium ions, at least one solvent and at least one wetting agent
Implementation Method 2
Using the wetting agent in the electrolyte allows faster filling of the electrochemical cell
Implementation Method 3
filling the electrolyte between the anode and the cathode is performed under vacuum conditions
Data Source
AI summary
Use of an electrolyte for an electrochemical cell and a method for manufacturing an electrochemical cell comprising such an electrolyte. The electrolyte comprises at least one conductive salt comprising lithium ions, at least one solvent and at least one wetting agent. The electrochemical cell comprises at least one anode, at least one cathode and at least one separator arranged between the at least one anode and the at least one cathode. The electrolyte may be filled between the at least one anode and the at least one cathode.