Electric Double Layer Device Terminal Connection Design
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Solution Overview
Problem
Existing electric double layer devices face challenges in productivity and ease of assembly due to complex terminal connections, which result in reduced connection force and increased internal equivalent resistance, affecting high-current discharge efficiency.
Innovation Solution
The electric double layer device design features a lower terminal directly withdrawn from a lower collecting plate, similar to the upper terminal's withdrawal from an upper collecting plate, simplifying assembly and enhancing connection force while reducing internal resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex terminal connections are used in existing electric double layer devices, then connection components can be provided for terminal support, but productivity and ease of assembly are reduced
Solution Approach 1:
The patent removes the complex intermediate connection components (connection plates, welding joints) from the terminal connection path. The terminal is directly withdrawn from the collecting plate, extracting only the essential functional elements and eliminating unnecessary intermediate structures that hindered assembly efficiency.
Solution Approach 2:
The patent merges the terminal and collecting plate into a more integrated structure where the terminal is directly withdrawn from the collecting plate. This merging eliminates the need for separate connection components and reduces the number of assembly steps while maintaining structural integrity.
2Reliability
If complex terminal connections are used in existing electric double layer devices, then terminal support structures can be implemented, but internal equivalent resistance increases
Solution Approach 1:
The patent extracts the terminal directly from the collecting plate without intermediate connection components. This extraction eliminates additional welding joints and connection interfaces that would increase internal equivalent resistance and energy loss.
Solution Approach 2:
Instead of connecting the terminal to the collecting plate through intermediate components (traditional approach), the patent inverts the approach by having the terminal directly withdrawn from the collecting plate, reversing the connection logic to reduce resistance.
3Reliability
If additional components are used for terminal connections, then connection stability can be improved, but device complexity increases
Solution Approach 1:
The patent takes out only the essential terminal and collecting plate components, removing all intermediate connection components. This extraction simplifies the device structure while maintaining reliable terminal connections through the direct withdrawal design.
Solution Approach 2:
The patent merges the terminal and collecting plate into a simplified integrated structure, reducing the total number of components. This merging eliminates the need for separate connection plates, welding joints, and other intermediate components that increased device complexity.
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 design improves productivity, ease of assembly, and high-current discharge efficiency by eliminating the need for additional components and ensuring secure terminal connections, thereby enhancing the overall performance of the device.
Implementation Method 1
a lower terminal is directly withdrawn from a lower collecting plate in the same manner as the manner in which an upper terminal is directly withdrawn from an upper collecting plate, thereby improving productivity and ease of assembly, increasing connection force, and improving discharge efficiency during the discharge of high current while reducing internal equivalent resistance
Implementation Method 2
an electric double layer is formed at the interface between each electrode and the electrolyte. In particular, activated carbon has a plurality of pores. For this reason, the electric double layer is easily formed.
Implementation Method 3
the capacitance of the stored charge may be calculated using Equation 1 below. Where ε0 indicates the permittivity of air, ε indicates the permittivity of an electrolyte, σ indicates the radius of electrolytic ions, and S indicates the specific surface area of an electrode.
Implementation Method 4
When direct current voltage is applied to a pair of solid electrodes in a state in which the solid electrodes are placed in an electrolyte ion solution, negative ions are electrostatically drawn to an electrode polarized as a positive electrode, and positive ions are electrostatically drawn to an electrode polarized as a negative electrode.
Data Source
AI summary
An electric double layer device is configured such that a lower terminal is directly withdrawn from a lower collecting plate in the same manner as the manner in which an upper terminal is directly withdrawn from an upper collecting plate, thereby improving productivity and ease of assembly, and in addition increasing connection force.