Electrolyte Dispensing System with Sealed Housing and Rollers
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Solution Overview
Problem
Conventional electrolyte dispensing techniques for large battery cells are inefficient, leading to non-uniform distribution and increased fabrication time due to the volatility of electrolyte components, which can result in reduced battery performance and capacity.
Innovation Solution
The development of advanced electrolyte dispensing systems that create a substantially closed environment during electrolyte delivery, using a housing with inlet and outlet rollers to seal the substrate and maintain electrolyte vapor pressure, along with delivery devices to apply electrolytes uniformly across the substrate, and applying a laminate material upon exit to prevent evaporation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional electrolyte dispensing techniques are used for large battery cells, then fabrication time increases and distribution uniformity deteriorates, but equipment complexity remains low
Solution Approach 1:
The dispensing system divides the electrolyte application process into multiple zones along the substrate path, with separate delivery devices positioned at different locations to apply electrolyte in stages, ensuring uniform distribution across large battery cells without increasing fabrication time
Solution Approach 2:
A sealed housing structure acts as an intermediary environment between the electrolyte reservoir and the substrate, controlling vapor pressure and preventing evaporation during the dispensing process, thereby maintaining distribution uniformity while enabling efficient processing
2Loss of substance
If conventional open dispensing methods are used, then equipment complexity remains low, but electrolyte component loss increases due to volatility
Solution Approach 1:
The housing creates a sealed environment that isolates the electrolyte from atmospheric conditions, maintaining controlled vapor pressure and preventing volatile components from evaporating, thus reducing electrolyte loss while containing the complexity within a manageable structure
Solution Approach 2:
The housing structure functions as a flexible seal that conforms to the substrate while maintaining the closed environment, allowing the system to adapt to different substrate sizes and shapes without requiring complex rigid sealing mechanisms
3Manufacturing precision
If the housing internal volume is reduced to maintain vapor pressure, then electrolyte vapor pressure control improves, but the area available for electrolyte application decreases
Solution Approach 1:
The housing internal volume is segmented into functional zones: a vapor pressure control chamber for maintaining controlled atmosphere and a substrate passage area for electrolyte application. This segmentation allows the vapor pressure control volume to be compact while the application area extends along the substrate path, resolving the space conflict
Solution Approach 2:
The system transitions from a two-dimensional application surface to a three-dimensional controlled volume, where the housing encloses the substrate and delivery devices, allowing vapor pressure control to occur in the vertical dimension while electrolyte application proceeds along the horizontal substrate path
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 approach limits electrolyte component and solvent losses, ensures uniform electrolyte distribution, and maintains the salt/solvent balance, enabling the use of volatile electrolytes without compromising battery performance, even in large-scale battery cell manufacturing.
Implementation Method 1
The internal volume defined by the housing may be formed to establish an electrolyte vapor pressure within the internal volume during operation
Implementation Method 2
The inlet roller may be configured to provide a substantial seal at the housing inlet when a substrate is delivered into the housing
Data Source
AI summary
Electrolyte dispensing systems according to embodiments of the present technology may include a housing defining an internal volume. The housing may define an inlet and an outlet. The dispensing system may include an inlet roller positioned proximate the housing inlet. The inlet roller may be configured to provide a substantial seal at the housing inlet when a substrate is delivered into the housing. The dispensing system may include a delivery device positioned between the housing inlet and housing outlet. The delivery device may be configured to supply an electrolyte to the substrate delivered into the housing. The electrolyte dispensing system may also include an outlet roller positioned proximate the housing outlet. The outlet roller may be configured to provide a substantial seal at the housing outlet when the substrate is delivered from the housing.