Release Paper Cover for Battery Pack Insulation and Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The assembly process of lithium secondary battery packs is complex and costly due to the use of insulating tape and separate protection circuit module cases, which also compromises mechanical rigidity and dimensional stability.
Innovation Solution
A release paper cover encloses the protection circuit module assembly, replacing multiple components and simplifying the manufacturing process, while providing insulation and mechanical support using a combination of release paper and a label portion for information display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If insulating tape and separate protection circuit module cases are used, then electrical insulation is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple separate components (insulating tape, protection circuit module case, sealing portion) into a single integrated release paper cover structure. The release paper cover simultaneously provides electrical insulation, mechanical protection, and sealing functions that were previously distributed across multiple separate components, thereby simplifying the assembly process and reducing device complexity while maintaining reliable electrical insulation.
Solution Approach 2:
The release paper cover serves multiple functions simultaneously: it acts as an insulating barrier, a protective case for the protection circuit module, and a sealing element. This multi-functional design eliminates the need for separate insulating tape and protection circuit module cases, reducing the number of components and simplifying the overall device structure.
2Reliability
If insulating tape is used for protection circuit module, then electrical insulation is provided, but mechanical rigidity and dimensional stability decrease
Solution Approach 1:
The release paper cover is constructed from composite materials that combine the insulating properties of release paper with the structural strength and rigidity of a rigid case structure. This composite construction provides both electrical insulation and mechanical support, overcoming the limitation of using only flexible insulating tape while maintaining electrical insulation effectiveness.
3Reliability
If multiple separate components are used for protection circuit module assembly, then functional requirements are met, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple separate components (insulating tape, protection circuit module case, sealing portion) into a single integrated release paper cover structure. This consolidation reduces the number of parts that need to be manufactured, stored, and assembled, thereby lowering manufacturing costs while maintaining the protective and insulating functions required for the protection circuit module.
Solution Approach 2:
The release paper cover serves multiple functions simultaneously: electrical insulation, mechanical protection, and sealing. By designing a single component that performs multiple functions, the patent eliminates the need for separate insulating tape and protection circuit module cases, reducing the total number of components and associated manufacturing costs.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided is a battery pack including: a battery cell provided with electrode terminals formed on one surface thereof including a sealing surplus portion; a release paper cover having a label portion attached onto the surface of the battery cell and displaying information; and a protection circuit module assembly connected to the battery cell through the electrode terminals, wherein the protection circuit module assembly may include: a protection circuit substrate electrically connected to the electrode terminals; an external input/output terminal formed on the protection circuit substrate; and an insulation member positioned between the protection circuit substrate and the battery cell, and wherein the release paper cover may be formed to enclose the protection circuit module assembly seated on the sealing surplus portion.