Galvanic Cell Molded Electrode Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing galvanic cells used in electromedical implants, such as pacemakers and defibrillators, face challenges in achieving high energy density and reliability, leading to frequent replacements and surgical interventions when the battery is exhausted or experiences technical issues.
Innovation Solution
A molded part with recesses is integrated into the battery housing to securely position and insulate electrodes, allowing for maximum electrode area and efficient space utilization, while minimizing the space occupied by other components, thereby enhancing energy density and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery housing is hermetically sealed with traditional closure methods, then reliability is improved, but the space utilization and energy density deteriorate due to insufficient electrode positioning precision
Solution Approach 1:
The molded part is pre-formed with precise recesses that define exact positioning locations for electrode sections before assembly. This preliminary preparation ensures accurate electrode placement and maximizes the usable electrode area within the battery housing, thereby improving energy density while maintaining reliable hermetic sealing.
Solution Approach 2:
The molded part acts as an intermediary component between the housing and electrodes. It provides precise positioning recesses for electrode sections while also serving as part of the hermetic sealing system, thus resolving the contradiction between reliable sealing and optimal space utilization for electrodes.
2Quantity of substance
If the electrode area is maximized to improve energy density, then the space for other components decreases, but proper positioning and insulation become more difficult
Solution Approach 1:
The molded part is pre-formed with integrated recesses that define exact positioning locations for electrode sections. This preliminary preparation ensures accurate electrode placement and maximizes the usable electrode area within the battery housing, thereby improving energy density while maintaining reliable hermetic sealing.
Solution Approach 2:
The molded part combines multiple functions: it provides positioning recesses for electrodes, acts as an insulating element, and contributes to the hermetic sealing structure. By merging these functions into a single component, the design simplifies the overall structure while maximizing electrode area.
3Ease of manufacture
If traditional electrode positioning methods are used, then assembly is simpler, but electrode positioning precision and insulation deteriorate leading to potential short circuits
Solution Approach 1:
The molded part acts as an intermediary component between the housing and electrodes. It provides precise positioning recesses for electrode sections while also serving as part of the hermetic sealing system, thus resolving the contradiction between reliable sealing and optimal space utilization for electrodes.
Solution Approach 2:
The molded part provides localized insulation and positioning features at specific critical locations where electrodes are positioned. The recesses are precisely formed to accommodate electrode sections with proper insulation, ensuring reliability without complicating the overall assembly process.
Data Source
AI summary
A battery having a housing assembled from multiple parts, of which one housing part is implemented like a vessel having an initially open front side and the other housing part is a closure part, which closes the vessel-like housing part on its initially open front side, and having at least one first and at least one second electrode, each of which is formed by a planar material, of which the first electrode is electrically connected to an electrically conductive housing part of the battery, while the second electrode is electrically connected to an electrically conductive contact, which is electrically insulated from the remaining housing, the battery comprising a molded part which is provided with at least one first recess for receiving and positioning at least one section of the first electrode or the first electrodes at a time.