Electrochemical Cell Conductive Plate Locking for Stable Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrochemical devices face issues with non-uniform joining and sealability due to elastic members that can displace or create gaps, and resin gaskets that lack uniform pressing force, leading to poor electrical connections and sealability.
Innovation Solution
An electrochemical device design featuring a conductive plate with elastic locking portions that are inserted into recessed container holes, providing a secure electrical connection and maintaining sealability by using the elastic force to fix the conductive plate to the container, while allowing for variations in power generation element thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conductive plate is used to maintain electrical connection, then electrical connection stability is improved, but the conductive plate may displace during sealing process
Solution Approach 1:
The conductive plate is segmented with separate locking portions that can be independently inserted into recesses in the cap, allowing each portion to be secured separately while maintaining overall plate stability and electrical connection
Solution Approach 2:
The locking portions of the conductive plate are inserted into recesses within the cap structure, creating a nested arrangement where the conductive plate is anchored within the cap's internal features, preventing displacement during sealing
2Stability of the object's composition
If elastic member is locked to seal ring and base member, then positioning is improved, but gap between lid member and electrochemical element increases
Solution Approach 1:
The locking portions are extracted as separate features from the main body of the cap, allowing them to be positioned independently within recesses to secure the conductive plate without creating gaps between the lid member and electrochemical element
Solution Approach 2:
The locking mechanism transitions from a single-dimension thickness issue to a multi-dimensional solution where locking portions extend from the cap's inner surface into recesses, securing the conductive plate in multiple positions simultaneously and eliminating gaps
3Reliability
If resin gasket is used for sealing, then sealing is achieved, but uniform pressing force cannot be provided
Solution Approach 1:
The elastic locking portions utilize their own elastic properties to automatically exert pressing force against the inner wall of the cap's recesses, securing themselves and the conductive plate in place without requiring external fastening mechanisms, thereby maintaining uniform pressing force across the sealing interface
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 design ensures stable electrical connections and improved sealability by using elastic locking portions to securely mount the conductive plate, preventing displacement and maintaining contact despite changes in volume, thus enhancing the device's capacity and performance.
Implementation Method 1
The elastic locking portion inserted in the insertion hole presses a side surface of the insertion hole
Data Source
AI summary
The electrochemical device includes: a case including a recessed container having a bottom and a side wall, and a cap covering the opening of the recessed container; a power generation element including a laminate having an electrode layer, an electrode layer and a solid electrolyte layer laminated together and contained in the interior space of the case such that the bottom and electrode layer face each other; and a conductive plate located adjacent to the opening of the recessed container and positioned between the electrode layer and cap. The recessed container includes insertion holes with openings in the upper end surface of the side wall. The conductive plate includes elastic locking portions located on edges thereof and corresponding in position to the insertion holes. With each elastic locking portion inserted in an insertion hole, the tip portion of the elastic locking portion presses a side surface of the insertion hole.