Secondary Battery Pressing Control for Consistent Electrode Bonding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Adjusting the height of a pressing device to control pressure in the welding process of electrode assemblies in secondary batteries increases process time and reduces mass productivity due to internal space constraints and electrode assembly arrangements.
Innovation Solution
A pressing apparatus with a driver, cylinder, regulator, and controller that adjusts pressure and movement to provide a predetermined level of pressure to electrode assemblies, minimizing height adjustment and ensuring consistent bonding despite size deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the height of the pressing device is adjusted to control pressure, then the bonding quality is improved, but the process time increases and mass productivity decreases
Solution Approach 1:
The pressing device height is pre-adjusted to a fixed position before the welding process. This preliminary setup eliminates the need for real-time height adjustments during operation, thereby maintaining consistent pressure application while reducing process time and improving mass productivity.
Solution Approach 2:
The invention changes the pressure control parameter from dynamic height adjustment to fixed height positioning. By setting the pressing device at a predetermined height, the system maintains optimal bonding pressure without the time-consuming adjustments, thus resolving the contradiction between bonding quality and productivity.
2Manufacturing precision
If the pressing device height is adjusted for different electrode assembly sizes, then the pressure consistency is improved, but the device complexity and operation time increase
Solution Approach 1:
The pressing device is designed with a universal fixed height that accommodates various electrode assembly sizes within a standard range. This single height setting serves multiple functions across different product specifications, eliminating the need for complex adjustment mechanisms and reducing device complexity while maintaining pressure consistency.
Solution Approach 2:
The solution segments the pressure control approach into a fixed geometric parameter rather than a continuously adjustable one. By defining specific height segments (fixed positions) that work for different assembly sizes, the system simplifies the control mechanism while preserving manufacturing precision.
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 apparatus reduces process time and improves mass productivity by maintaining consistent pressure application across varying electrode assembly sizes without manual height adjustments.
Implementation Method 1
a regulator configured to control an internal pressure of the cylinder... a portion of the cylinder is configured to move upwardly by a second distance in response to the internal pressure of the cylinder controlled by the regulator to provide a pressing force
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A pressing apparatus according to embodiments of the present disclosure may include a driver, a cylinder configured to move in response to driving of the driver, and a regulator configured to control an internal pressure of the cylinder, wherein the cylinder moves upwardly by a first distance in response to driving of the driver, and a portion of the cylinder is configured to move upwardly by a second distance in response to the internal pressure of the cylinder controlled by the regulator to provide a pressing force to at least a portion of a secondary battery.