Integrated Insulation Structure for Secondary Battery Head Cover
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Solution Overview
Problem
The existing secondary battery assembly methods require protrusions that occupy internal space, complicating the assembly process and reducing battery capacity due to the need for a top bracket and lower plastic protrusions.
Innovation Solution
A secondary battery head cover assembly with an integrated insulation structure comprising a top connection sheet and two naked battery core insulation sheets connected to the head cover, eliminating the need for a top bracket by integrating the insulation and connection components, allowing for a more compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a top bracket and lower plastic protrusions are used to connect the insulation sheet, then the insulation sheet can be effectively connected to the head cover, but the protrusions occupy internal space and reduce battery capacity
Solution Approach 1:
The patent merges the top bracket and lower plastic protrusions into an integrated connection structure formed as a single piece with the head cover. This integration eliminates the need for separate protruding components, thereby saving internal space while maintaining the connection function between the insulation sheet and head cover.
Solution Approach 2:
The connection structure serves multiple functions: it provides mechanical support, enables insulation sheet attachment, and eliminates the need for separate protruding components. By combining multiple functions into a single integrated structure, the design reduces overall component count and space occupation.
2Reliability
If a top bracket and lower plastic protrusions are used for connection, then the insulation sheet can be connected to the head cover, but the assembly process becomes more complex
Solution Approach 1:
The patent combines the top bracket and lower plastic protrusions into a single integrated connection structure. This merging reduces the number of separate components that need to be assembled, thereby simplifying the assembly process while ensuring reliable connection between the insulation sheet and head cover.
3Reliability
If protrusions are used for connection, then the insulation sheet can be attached to the head cover, but the battery capacity is reduced due to occupied space
Solution Approach 1:
The patent integrates the connection structure into the head cover itself, eliminating separate protruding components. This integration frees up internal space that would otherwise be occupied by protrusions, thereby increasing battery capacity while maintaining reliable connection between components.
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 solution saves internal space, improving energy density by eliminating the need for protrusions and simplifying the assembly process while maintaining effective insulation and functionality.
Implementation Method 1
the naked battery core insulation sheet... is hot-melt connected with the top bracket and the lower plastic
Data Source
AI summary
The present application relates to a secondary battery, including a naked battery core and a secondary battery head cover assembly. The secondary battery head cover assembly includes a head cover and an insulation structure. The insulation structure includes a top connection sheet and two naked battery core insulation sheets, and the two naked battery core insulation sheets are connected to two long sides of the top connection sheet, respectively. The top connection sheet is located below the head cover. The naked battery core is located below the top connection sheet. The head cover is provided with an explosion-proof valve, the top connection sheet is provided with an explosion-proof valve air hole, and the explosion-proof valve air hole is provided correspondingly below the explosion-proof valve.