Insulated Battery Container for Case Isolation and Electrolyte Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in manufacturing batteries for implantable medical devices is achieving an electrically isolated outer case from the conductive components of the electrode assembly, as the electrolyte typically contacts the case, making it difficult to prevent electrical communication and ensure longevity and performance.
Innovation Solution
A battery design featuring an electrode assembly within an electrically insulating container positioned inside an electrically conducting case, where the container is constructed to prevent electrical communication with the electrodes and ensure the electrolyte does not contact the case, using materials like ETFE and PEEK for insulation and laser welding for sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the battery case is made from electrically conductive materials and configured to operate with the case functioning as a terminal, then the battery structure is simplified and the case can serve as a sensing electrode, but the battery case becomes electrically connected to the electrode assembly components, making it difficult to achieve electrical isolation
Solution Approach 1:
The battery is divided into two distinct parts: an electrically conducting case and an electrically insulating container. The insulating container holds the electrode assembly and electrolyte, separating them from the conducting case. This segmentation allows the case to function as a terminal while preventing electrical connection to the electrode assembly, resolving the contradiction between structural simplicity and electrical isolation.
Solution Approach 2:
An electrically insulating container acts as an intermediary component between the electrically conducting battery case and the electrode assembly. This intermediate insulating barrier prevents direct electrical contact while allowing the case to maintain its conducting properties for terminal function, thus achieving both structural simplicity and electrical isolation.
2Ease of manufacture
If the electrolyte is allowed to contact the battery case for simplified manufacturing, then the manufacturing process is easier, but electrical communication between the case and electrode components cannot be prevented
Solution Approach 1:
The battery is segmented into a conducting case and an insulating container that holds the electrolyte and electrode assembly. This segmentation prevents the electrolyte from contacting the conducting case while maintaining manufacturing feasibility, as the insulating container can be easily positioned and sealed within the case.
Solution Approach 2:
The electrically insulating container serves as an intermediary that prevents direct contact between the electrolyte and the conducting battery case. This intermediate barrier simplifies manufacturing by providing a clear structural guide for assembly while ensuring electrical isolation is maintained.
3Reliability
If an electrically insulating container is introduced to isolate the battery case from electrode components, then electrical isolation is achieved, but the device complexity increases
Solution Approach 1:
The electrically insulating container is designed to perform multiple functions: it provides electrical isolation between the conducting case and electrode assembly, contains the electrolyte and electrode components, and serves as a structural element that can be easily integrated into the battery assembly. This multi-functionality reduces the overall device complexity despite adding the insulating component.
Solution Approach 2:
The electrically insulating container is nested within the electrically conducting battery case, creating a compact hierarchical structure. This nesting arrangement minimizes the overall battery size and simplifies assembly, as the insulating container with the electrode assembly can be inserted as a single unit into the conducting case, reducing the perceived 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 effectively isolates the battery case from the electrode components, enhancing the battery's longevity and performance by preventing electrical interference and ensuring the electrolyte remains contained, thus addressing the issue of electrical isolation in implantable medical device batteries.
Implementation Method 1
an electrically insulating container... constructed such that the battery case is not in electrical communication with the one or more first electrodes and the one or more second electrodes
Implementation Method 2
using materials like ETFE and PEEK for insulation and laser welding for sealing
Data Source
AI summary
The battery includes an electrode assembly in an interior of an electrically insulating container. The electrode assembly includes one or more first electrodes alternated with one or more second electrodes. The container is positioned is in an interior of an electrically conducting battery case. The container being is constructed such that the battery case is not in electrical communication with the one or more first electrodes and the one or more second electrodes, and such that an electrolyte positioned in an interior of the container does not contact the battery case.