Battery Cell Casing with Insulating Coating for Corrosion Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Battery cell shells are prone to contamination, corrosion, and damage, which affects their service life.
Innovation Solution
A battery cell shell with a shell body and a first insulating coating on its outer surface, featuring different roughness levels on various surfaces to enhance adhesion and a double protection layer system on the inner surface for improved insulation and corrosion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a battery cell shell is used without additional protection layers, then the structure is simple and manufacturing cost is low, but the shell is prone to corrosion and damage reducing service life
Solution Approach 1:
The patent applies composite materials by combining the shell body with multiple coating layers (first insulating coating and first protection layer) to create a multi-layer protective structure. This composite structure provides enhanced corrosion resistance and insulation while maintaining structural integrity, directly resolving the contradiction between reliability and complexity.
Solution Approach 2:
The patent implements preliminary action by pre-applying the first insulating coating and first protection layer to the shell body before the battery cell is assembled and put into service. This preliminary protective measure ensures corrosion resistance and insulation are established in advance, preventing damage before it occurs and extending service life without adding operational complexity.
2Strength
If the shell surface is smooth, then manufacturing is easier and appearance is better, but adhesion of protection layers is reduced
Solution Approach 1:
The patent applies local quality by creating a rough surface layer specifically at the interface where protection layers will be applied, while maintaining smoother surfaces in other areas. This localized surface roughening enhances adhesion of the first insulating coating and first protection layer without requiring the entire shell surface to be rough, thus balancing adhesion strength with manufacturing ease.
3Reliability
If protection layers are added to the shell, then corrosion resistance and insulation are improved, but manufacturing process becomes more complex
Solution Approach 1:
The protection layers are applied as preliminary coatings during the shell manufacturing process, before the battery cell assembly is completed. This timing allows the coatings to be integrated into the existing manufacturing workflow without requiring separate post-assembly processing steps, thereby improving corrosion resistance while minimizing additions to the overall manufacturing process complexity.
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 solution reduces the risk of corrosion and damage, prolonging the battery cell's service life by enhancing adhesion and providing effective insulation and corrosion protection.
Implementation Method 1
a first insulating coating disposed on an outer surface of the shell body
Implementation Method 2
The first insulating coating can reduce the risk of corrosion and damage of the shell body
Implementation Method 3
featuring different roughness levels on various surfaces to enhance adhesion
Implementation Method 4
a double protection layer system on the inner surface for improved insulation and corrosion resistance
Implementation Method 5
a double protection layer system on the inner surface for improved insulation and corrosion resistance
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
The present disclosure provides a battery cell shell and a battery cell, where the battery cell shell includes a shell body and a first insulating coating disposed on an outer surface of the shell body. The first insulating coating in the battery cell shell provided by the present disclosure can reduce the risk of corrosion and damage of the shell body and prolong the service life.