Secondary Battery Guide for Connection Member Alignment
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Solution Overview
Problem
Existing secondary batteries face challenges in maintaining the position of connection members during assembly, often requiring the use of tape for fixation, which is inconvenient and can lead to misalignment and increased resistance in the charging and discharging current path.
Innovation Solution
The secondary battery design incorporates guides protruding from the cap cover that guide and support connection members, eliminating the need for tape and ensuring proper alignment and fixation, thereby simplifying the assembly process and reducing electrical resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tape is used to fix the connection member, then the connection member can be held in position, but the assembly process becomes more complex and electrical resistance increases
Solution Approach 1:
The invention removes the tape fixation step from the assembly process by integrating the positioning function directly into the cap cover structure through guides and positioning protrusions. This extraction of the fixation function from a separate material (tape) to the structural design eliminates the need for additional assembly steps and materials.
Solution Approach 2:
The guides and positioning protrusions act as intermediaries between the cap cover and the connection member, providing a mechanical interface that ensures proper positioning without requiring tape. The guides receive the positioning protrusions, creating a precise fit that maintains connection member alignment during assembly and operation.
2Reliability
If tape is used to fix the connection member, then the connection member can be held in position, but electrical resistance in the current path increases
Solution Approach 1:
The invention removes the tape layer from the electrical current path, eliminating the source of increased electrical resistance. By using direct mechanical contact through guides and positioning protrusions, the electrical connection remains uninterrupted and low-resistance.
Solution Approach 2:
The guides and positioning protrusions provide a precise mechanical intermediary that ensures accurate alignment of the connection member with the electrode, maintaining optimal electrical contact without introducing additional resistance layers like tape would create.
3Manufacturing precision
If guides are added to the cap cover, then the connection member positioning is improved, but the cap cover structure becomes more complex
Solution Approach 1:
The invention merges the positioning function into the cap cover structure by integrating guides and positioning protrusions directly into the cap cover body. This consolidation eliminates the need for separate positioning components, reducing overall device complexity while achieving precise alignment.
Solution Approach 2:
The cap cover is designed to serve multiple functions: it provides structural closure, electrical insulation, and precise positioning of the connection member through integrated guides. This multi-functionality reduces the need for additional dedicated positioning components, simplifying the overall structure.
Data Source
AI summary
A secondary battery is disclosed. In one aspect, the secondary battery includes a battery cell including an electrode, a cap cover placed over the battery cell and having an opening that exposes the electrode, and a connection member placed over the cap cover and electrically connected to the electrode. The battery also includes at least one guide accommodating the connection member, wherein the guide protrudes upwardly from the cap cover and extends in a length direction of the connection member.