Battery End Cover Adhesive Sheet Alignment for Insulation Safety
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Solution Overview
Problem
The existing battery assembly process faces difficulties in aligning and attaching a top adhesive sheet to an end cover, resulting in low efficiency and potential insulation and safety issues due to improper spacing between the sheet and terminal assembly.
Innovation Solution
The end cover assembly features a top adhesive sheet with specific size differences and openings that align with the terminal assembly, providing a reasonable size margin for easier attachment while ensuring insulation and reducing dust accumulation, incorporating a pressure relief mechanism with oblong openings for stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the top adhesive sheet is made to align precisely with the terminal assembly, then the insulation effect is improved, but the attaching difficulty increases and assembly efficiency decreases
Solution Approach 1:
The patent changes the dimensional parameters of the first opening relative to the terminal assembly, creating a size difference of 0.6-1mm in length and width directions. This parameter modification allows the opening to be slightly larger than the terminal assembly, providing alignment tolerance while maintaining insulation effectiveness, thus resolving the contradiction between precise alignment requirements and assembly ease.
2Productivity
If the first opening is made larger to facilitate attachment, then the attaching efficiency is improved, but the spacing between the terminal assembly and top adhesive sheet increases reducing insulation effect
Solution Approach 1:
The patent optimizes the size parameters of the first opening by setting specific dimensional differences (0.6-1mm in length and width directions) between the opening and terminal assembly. This controlled enlargement provides sufficient alignment tolerance to improve attaching efficiency while limiting the maximum spacing to maintain effective insulation, thus resolving the contradiction between attachment ease and insulation quality.
3Ease of manufacture
If the size difference between the first opening and terminal assembly is increased, then the assembly difficulty is reduced, but the spacing becomes too large causing foreign matter accumulation
Solution Approach 1:
The patent establishes optimal parameter ranges for the size difference between the first opening and terminal assembly (0.6-1mm in length and width directions). This controlled parameter change provides sufficient clearance to reduce assembly difficulty while preventing excessive spacing that would allow foreign matter accumulation, thus resolving the contradiction between ease of assembly and prevention of contamination.
Data Source
AI summary
Disclosed are an end cover assembly, an energy storage apparatus and an electric device. The end cover assembly includes an end cover, a terminal assembly and a top adhesive sheet, and the end cover has a first surface and a second surface opposite to each other in the thickness direction thereof; the terminal assembly is disposed on the end cover; and the top adhesive sheet is attached to the first surface of the end cover, the top adhesive sheet is provided with a first opening through which the terminal assembly penetrates. According to the present application, the attaching difficulty of the top adhesive sheet on the end cover can be reduced, and the attaching efficiency is improved; and the size of the first opening is more reasonable, an insulation effect is ensured, a probability of foreign matter accumulation is reduced, and the use safety is improved.