Sequential Battery Formation Jig for Directional Electrolyte Flow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional formation jigs fail to impart directionality to the electrolyte solution during the pressurization process of lithium secondary batteries, leading to inefficient gas removal.
Innovation Solution
A formation jig with a pressing plate and support plate, featuring through holes of varying diameters and screws for independent movement, allows sequential pressing of battery cells to impart directionality to the electrolyte solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flat pressing plate is used to pressurize the battery cell, then the structure is simple and easy to manufacture, but the electrolyte solution cannot be given directionality during pressurization, leading to inefficient gas removal
Solution Approach 1:
The pressing plate is divided into multiple pressing regions with different pressing forces. The first pressing region applies a first pressing force while the second pressing region applies a second pressing force different from the first, creating directional pressure distribution that guides electrolyte solution flow toward specific discharge paths for more efficient gas removal
Solution Approach 2:
Different regions of the pressing plate are designed with different pressing characteristics. By making the pressing force non-uniform across the battery cell surface, the invention creates localized pressure zones that direct the electrolyte solution flow in specific directions, optimizing gas venting efficiency in each region
2Ease of operation
If uniform pressure is applied across the battery cell, then the pressing process is simple to control, but the electrolyte solution lacks directional flow, reducing gas discharge efficiency
Solution Approach 1:
The pressing plate is divided into multiple pressing regions with different pressing forces. The first pressing region applies a first pressing force while the second pressing region applies a second pressing force different from the first, creating directional pressure distribution that guides electrolyte solution flow toward specific discharge paths for more efficient gas removal
Solution Approach 2:
The pressing system transitions from static uniform pressure to dynamic differential pressure. By independently controlling the pressing forces in different regions, the system creates a dynamic pressure gradient that actively directs electrolyte solution flow, enhancing gas removal efficiency while maintaining operational control
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 jig effectively discharges gas by directing the electrolyte solution, ensuring efficient removal of internal gas and electrolyte during the formation process.
Implementation Method 1
a first screw configured to pass through first through hole of the pressing plate and the second through hole of the pressing support plate and to move the pressing plate in a gap-adjusting direction by rotation thereof
Implementation Method 2
a second screw configured to pass through the third through hole of the pressing support plate and to move the pressing support plate in the gap-adjusting direction by rotation thereof
Implementation Method 3
The jig effectively discharges gas by directing the electrolyte solution, ensuring efficient removal of internal gas and electrolyte during the formation process
Data Source
AI summary
A formation jig includes a pressing plate configured to press a battery cell, the pressing plate having a first through hole; a pressing support plate configured to support the battery cell when the pressing plate presses an upper or lower portion of the battery cell, the pressing support plate having a second through hole and a third through hole; a first screw configured to pass through first through hole of the pressing plate and the second through hole of the pressing support plate and to move the pressing plate in a gap-adjusting direction by rotation thereof; and a second screw configured to pass through the third through hole of the pressing support plate and to move the pressing support plate in the gap-adjusting direction by rotation thereof. A diameter of the second through hole is larger than a diameter of the first through hole.