Secondary Battery Integrated Terminal and Cap Assembly
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Solution Overview
Problem
Secondary batteries face challenges in manufacturing costs and efficiency due to the complexity of their design, which includes multiple parts that can lead to short circuits and corrosion from external moisture.
Innovation Solution
A secondary battery design that integrates the first coupling terminal and extension part as a single piece, eliminating the need for a separate short circuit plate contact and enhancing sealing efficiency with a cap plate and insulation members to prevent moisture ingress and short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate parts are used in the battery design (coupling terminal, short circuit plate, insulation members), then the battery can provide comprehensive functions (electrical coupling, short circuit protection, insulation), but the manufacturing cost increases and the manufacturing process becomes complex
Solution Approach 1:
The coupling terminal is designed as an integrated structure that combines the electrical coupling function and the short circuit protection function into a single component. The terminal includes a coupling portion for electrical connection and an extension portion that acts as the short circuit plate, eliminating the need for separate parts and reducing manufacturing complexity while maintaining comprehensive protection functions
2Reliability
If multiple separate parts are used in the battery design, then comprehensive protection functions are provided, but manufacturing costs increase and yields decrease
Solution Approach 1:
The insulation members are integrated into the cap plate structure, forming a unified component that provides both sealing and insulation functions. This integration reduces the number of separate parts that need to be assembled, lowering manufacturing costs and improving production yields while maintaining effective moisture protection
3Reliability
If multiple separate parts are used in the battery design, then comprehensive protection is achieved, but the manufacturing process becomes complex and yields improve
Solution Approach 1:
The cap plate is designed as an integrated structure that combines the sealing function and insulation function into a single component. The cap plate includes a sealing portion that prevents moisture ingress and insulation portions that prevent corrosion, eliminating the need for multiple separate parts and simplifying the manufacturing process to improve production yields
Data Source
AI summary
A secondary battery includes an electrode assembly; a case housing the electrode assembly; a terminal electrically coupled to the electrode assembly, wherein the terminal includes a coupling part electrically coupled to the electrode assembly; and an extension part integral as a single piece with and extending from the coupling part; and a cap assembly sealing the case and comprising a cap plate and a short circuit plate, wherein the extension part at least partially covers the short circuit plate.