Segmented Positive Electrode Assembly for High-Current Copper Foil
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Solution Overview
Problem
Conventional positive electrodes in electrolytic copper foil manufacturing are limited in thickness, requiring high fastening force and multiple bolts, which leads to residual stress and inefficiencies in handling high current.
Innovation Solution
A positive electrode assembly with a concave arc-shaped base and multiple electrodes arranged circumferentially, supported without deformation by fastening bolts, allowing for increased thickness and reduced fastening force, thereby enabling high current usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the positive electrode is made thicker to handle high current, then productivity and efficiency are improved, but the electrode cannot be properly fastened to the base and residual stress increases
Solution Approach 1:
The positive electrode is divided into multiple separate electrode plates instead of using a single thick electrode. This segmentation allows each plate to be individually fastened to the base with bolts, ensuring proper fastening reliability while collectively providing sufficient current handling capacity through the combined surface area of multiple plates
Solution Approach 2:
The electrode structure transitions from a single thick plate (one-dimensional thickness increase) to multiple thinner plates arranged in a specific spatial configuration. This dimensional change allows the system to achieve equivalent or superior current handling capacity through increased surface area and parallel arrangement, while maintaining fastening reliability of individual plates
2Ease of manufacture
If multiple bolts with great fastening force are used to deform the electrode into concave shape, then the electrode can be fixed to the base, but residual stress is generated in the electrode
Solution Approach 1:
By segmenting the electrode into multiple plates, each plate can be fastened with fewer bolts requiring less fastening force. The cumulative fastening effect of multiple plates replaces the need for high fastening force on a single plate, reducing residual stress while maintaining assembly feasibility
Solution Approach 2:
The design changes the fastening parameters by distributing the fastening load across multiple bolts on multiple plates rather than using fewer bolts with high fastening force. This parameter change reduces the fastening force per bolt, preventing electrode deformation and residual stress generation while achieving reliable fixation
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 solution allows for thicker electrodes that can handle high current, improving productivity and efficiency in copper foil manufacturing while minimizing residual stress and simplifying the assembly process.
Implementation Method 1
Technology for manufacturing copper foil using electrolytic reaction is disclosed
Implementation Method 2
copper foil is formed on the drum-type negative electrode assembly 30 through electrolytic precipitation
Data Source
AI summary
Disclosed is a positive electrode assembly for manufacture of copper foil. The positive electrode assembly includes a base having a concave arc-shaped section corresponding drum-type negative electrode and a plurality of electrodes arranged on the base in a circumferential direction, the plurality of electrodes being fastened to the base using a plurality of fastening bolts. The plurality of electrodes is fastened to the base in a state of not being deformed by fastening force of the fastening bolts and being maintained flat in shape, thereby responding to high current through adjustment of the thickness of each electrode. Each electrode has a thickness of 2 to 7 mm.