Button Battery Locking Boss Structure to Prevent Cover Detachment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing button-type batteries lack a secure locking mechanism, leading to potential detachment of the battery cover from the battery cup, which can expose the rolled cell and pose a safety risk due to electrolyte exposure upon collision.
Innovation Solution
A button-type battery design featuring a package assembly with a recessed sealing wall forming a locking boss that presses against a sealing plastic ring, providing a strong locking force to prevent detachment of the battery cover from the cup, and a cell assembly with an electrode tab connected to the sealing base and cap, enhancing safety through a secure locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no locking mechanism is provided, then the battery structure is simple, but the battery cover can be easily detached causing safety risks
Solution Approach 1:
The sealing wall is segmented to include a recessed portion that forms a locking boss, creating a distinct locking component within the battery cup structure. This segmentation allows the locking function to be integrated into the existing structure without adding a separate complex locking mechanism.
Solution Approach 2:
The sealing plastic ring is nested between the battery cover and battery cup, with the locking boss pressing against the sealing plastic ring to create a nested locking structure. This nested arrangement provides effective locking while maintaining structural simplicity.
2Force
If a locking mechanism is added, then the locking force is strong preventing detachment, but the structure becomes more complex
Solution Approach 1:
The locking boss is formed by a local recess in the sealing wall, concentrating the locking function in a specific localized area. This local quality approach provides strong locking force at the critical interface without requiring complex mechanisms throughout the entire structure.
Solution Approach 2:
The locking function is merged with the sealing wall structure by forming the locking boss directly from the recessed portion of the sealing wall. This merging eliminates the need for separate locking components while maintaining strong locking force.
3Reliability
If the battery cover is easily detached, then the structure is simple, but the rolled cell is exposed leading to safety hazards
Solution Approach 1:
The locking boss and sealing plastic ring are pre-configured to automatically engage when the battery cover is placed on the battery cup. This preliminary action ensures the rolled cell is protected from exposure before the battery is even assembled, without requiring complex active locking mechanisms.
Solution Approach 2:
The sealing plastic ring acts as an intermediary component between the battery cover and battery cup, mediating the locking action. The locking boss presses against this intermediary to secure the assembly, providing both protection and structural simplicity.
Data Source
AI summary
A button-type battery including a package assembly and a cell assembly is provided. In actual application, as part of a sealing wall is recessed inwards in a direction to a battery reservoir so as to form a locking boss, as such, when a battery cover is being assembled, the locking boss is pressed against part of a sealing plastic ring so that the part of the sealing plastic ring is in tight contact with a sealing edge, and a battery cup can be locked to the battery cover by means of the locking boss, thereby preventing easy detachment of the battery cover from the battery cup to cause exposure of a rolled cell. The battery cover is applied with a strong locking force from the battery cup, greatly improving the safety of the button-type battery.