Copper Foil Electroplating Apparatus with Shielded Fastening
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Solution Overview
Problem
The existing apparatus for manufacturing copper foils through electroplating experiences non-uniform current density due to variations in the assembly of the base fastening member and positive electrode plate, leading to uneven thickness and degraded quality of the copper foil.
Innovation Solution
The apparatus incorporates a positive electrode plate with a base unit, a first connecting unit, and a base fastening unit, where the first connecting unit includes a covering member and an inclined member to cover the base fastening unit, reducing direct exposure to the negative electrode drum and enhancing current density uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the base fastening member and positive electrode plate are coupled to the positive electrode body at different distances from the negative electrode drum, then the assembly process is simplified, but the current density becomes non-uniform and copper foil thickness varies
Solution Approach 1:
The patent introduces a covering member as an intermediary component that shields the base fastening member from directly interacting with the electrolyte. This covering member acts as a mediator between the fastening mechanism and the electroplating environment, preventing the fastening member from creating current density variations while still allowing the assembly to be easily manufactured.
2Device complexity
If the base fastening member is exposed to the electrolyte, then the assembly structure is simpler, but the current density distribution becomes non-uniform around the positive electrode plate
Solution Approach 1:
The covering member serves as an intermediary element that blocks the direct exposure of the base fastening member to the electrolyte. This intermediary structure prevents the fastening member from creating localized current density variations, thereby ensuring reliable and uniform current distribution across the positive electrode plate without significantly increasing overall device complexity.
Solution Approach 2:
The patent extracts the base fastening member from the electrolyte environment by placing it behind the covering member. This extraction removes the harmful interaction between the fastening member and the electrolyte that causes non-uniform current density, while the fastening member retains its structural function of securing the positive electrode plate.
3Ease of manufacture
If the base fastening unit is exposed to the outside, then the assembly is easier to manufacture, but the current density in the electrolyte is not uniformly formed
Solution Approach 1:
The covering member functions as an intermediary that allows the base fastening unit to be easily manufactured and assembled while preventing it from directly interacting with the electrolyte. This intermediary structure ensures that the fastening unit can be incorporated into the assembly process without compromising the uniformity of current density in the electrolyte.
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 configuration improves the uniformity of current density and thickness of the copper foil, resulting in higher quality copper foil production.
Implementation Method 1
a negative electrode drum on which a copper foil is electrodeposited in an electroplating method using an electrolyte
Implementation Method 2
by reducing a deviation of current density formed around the positive electrode plate, it is possible to improve the uniformity of the current density in an electrolyte
Data Source
AI summary
An apparatus for manufacturing copper foil is provided, including: a negative electrode drum on which a copper foil is electrodeposited, a positive electrode plate electrically connected with the negative electrode drum through an electrolyte, a positive electrode body configured to support the positive electrode plate, and a winding unit configured to wind the copper foil supplied from the negative electrode drum, wherein the positive electrode plate includes a base unit coupled to the positive electrode body, a connecting unit coupled to the positive electrode body to overlap a portion of the base unit, and a base fastening unit coupling the base unit to the positive electrode body, the connecting unit includes a covering member disposed to overlap the base unit and an inclined member inclined with respect to the covering member, and the covering member covers the base fastening unit between the base fastening unit and the negative electrode drum.