Secondary Battery Cover Plate Assembly Segmentation
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Solution Overview
Problem
Current secondary batteries face challenges with integral end caps that limit design flexibility due to difficulties in one-time molding and poor precision, leading to constrained structural optimization.
Innovation Solution
A cover plate assembly comprising separate first and second cover plates allows for individual formation and connection, enabling optimized layout of local features and material selection based on welding requirements, improving flexibility and structural optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If integral end caps are used with multiple structural features, then sealing function is achieved, but manufacturing precision deteriorates due to difficulty in one-time molding
Solution Approach 1:
The end cap is divided into a first end cap and a second end cap that are separately formed and then assembled together. The first end cap includes a through hole while the second end cap includes a blocking portion that blocks the through hole. This segmentation allows each component to be molded independently with high precision, avoiding the molding difficulties of integrating multiple features into a single piece.
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
The separate cover plate design enhances assembly efficiency, reduces processing costs, and ensures better welding quality and sealing performance, thereby improving the structural integrity and flexibility of the secondary battery.
Implementation Method 1
An outer periphery of the sealing plate matches the stepped portion and is welded with the inner wall of the through hole to seal the liquid injection hole
Implementation Method 2
The first cover plate covers the opening and is connected with the side wall in a sealed manner
Data Source
Figure 1
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Figure 4~6
AI summary
A secondary battery (100), a battery pack (200) and an electronic device (300) are provided. The secondary battery (100) includes: a housing (110) and an electrode assembly (120). The housing (110) includes a side wall (111) with an opening (112) at one end and a cover plate assembly (140). The cover plate assembly (140) seals the opening (112). The electrode assembly (120) is disposed within the housing (110). The cover plate assembly (140) includes: a first cover plate (141) and a second cover plate (142). The first cover plate (141) covers the opening (112) and is connected with the side wall (111) in a sealed manner. The first cover plate (141) includes a through hole (1411). The second cover plate (142) at least partially blocks the through hole (1411). The second cover plate (142) is connected with the first cover plate (141).