Battery Current Collector Lid Structure for Damage Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electrical storage devices, such as batteries, are not designed to protect the current collector, which connects the electrode assembly and the electrode terminal, from damage.
Innovation Solution
The electrical storage device includes an electrode assembly with a current collector extending from the electrode, an electrode terminal connected to the current collector, an exterior film wound around the assembly, and a lid covering at least part of the current collector for protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the current collector is left exposed without protection, then the device structure remains simple, but the current collector is vulnerable to damage from external forces
Solution Approach 1:
The lid serves multiple functions: it seals the exterior film opening to maintain the sealed environment, and simultaneously protects the current collector from external forces. By making the lid multi-functional, the patent avoids adding a separate protective component, thus resolving the contradiction between reliability improvement and device complexity increase.
Solution Approach 2:
The protective function for the current collector is merged with the sealing lid. Instead of having separate sealing and protection components, the patent integrates both functions into a single lid structure that performs dual roles, thereby improving reliability without significantly increasing device complexity.
2Strength
If a lid is added to cover the current collector, then the current collector is protected from damage, but the device structure becomes more complex
Solution Approach 1:
The lid is designed to perform multiple functions simultaneously: sealing the opening of the exterior film and providing mechanical protection to the current collector. This multi-functionality approach allows the patent to improve strength without adding separate protective components, thus avoiding excessive increase in device complexity.
Solution Approach 2:
The sealing function and protective function are merged into a single lid component. By combining these functions, the patent achieves improved current collector protection while minimizing the increase in device complexity, as the lid is an integrated part of the existing sealing structure.
Data Source
AI summary
A power storage device comprising: an electrode body that includes electrodes; a current collector that extends from the electrodes; an electrode terminal that is electrically connected to the electrode body via the current collector; an exterior film that is wrapped around the electrode body in such a manner as to have an opening; and a lid body that is disposed in the opening, wherein the lid body covers at least a part of the current collector.