Secondary Battery Cap Plate Insulator Assembly for Simpler Isolation
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Solution Overview
Problem
Existing secondary batteries face challenges in insulation reliability and assembly complexity due to separate components requiring multiple processes, which can compromise performance and efficiency.
Innovation Solution
Integration of a cap plate and insulating part within the electrode assembly, featuring a modular design with insulators and a coupling reinforcement part to enhance insulation and simplify assembly, including a first and second insulator with a coupling part for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate cap plate and insulating part components are used, then assembly flexibility is maintained, but assembly complexity increases and insulation reliability deteriorates
Solution Approach 1:
The cap plate and insulating part are merged into a single integrated component. The insulating part is formed as an integral structure with the cap plate, eliminating the need for separate assembly steps while ensuring reliable insulation between the electrode assembly and external environment. This integration directly resolves the contradiction by improving insulation reliability through unified structure while reducing assembly complexity by eliminating multiple component assembly operations.
2Ease of manufacture
If multiple separate components are assembled, then component functionality is optimized, but manufacturing time increases
Solution Approach 1:
The cap plate and insulating part are combined into a single molded component that can be manufactured in one process. This integration eliminates multiple assembly steps, reduces manufacturing time, and simplifies the overall assembly process while maintaining the distinct functional characteristics of both the cap plate and insulating part within the unified structure.
3Device complexity
If integrated cap plate and insulating part are used, then assembly process is simplified, but manufacturing precision requirements increase
Solution Approach 1:
The integrated cap plate and insulating part structure incorporates distinct functional zones and features that are formed during molding. The design includes specific geometric features such as recesses, protrusions, and layered structures that enable precise positioning and assembly while maintaining the benefits of integration. This segmentation approach allows the complex integrated structure to be manufactured with controlled precision requirements distributed across different functional areas.
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 integration improves insulation reliability and simplifies the assembly process, enhancing the overall performance and efficiency of secondary batteries.
Implementation Method 1
The coupling post may be coupled to the coupling hole through hot stacking.
Data Source
AI summary
A secondary battery and a battery pack are disclosed. A secondary battery includes an electrode assembly including an electrode tab, a case in which the electrode assembly is accommodated, a connection member electrically connected to the electrode tab, a side terminal electrically connected to the connection member, a cap plate passing through the side terminal and coupled to an opening of the case, and an insulating part insulating the cap plate from the side terminal and insulating the cap plate from the electrode assembly.