External Cladding Film Structure for Battery Pack Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing energy storage devices face consistency issues due to misalignment and creasing problems during the attachment of external cladding films, which can affect the service life of electrical equipment.
Innovation Solution
The external cladding film design includes side film sections with specific cut grooves and oblique creases that allow for precise alignment and adherence to the side plates, preventing misalignment and creasing, even with offset creases, and eliminates the need for folding the bottom film section to ensure full coverage of the bottom plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the external cladding film is coated with glued layers on parts exceeding the side plate and bottom plate, then the attachment coverage is improved, but misalignment and creasing occur during attachment
Solution Approach 1:
The external cladding film is divided into multiple sections: a first cladding section covering the side plate, a second cladding section covering the bottom plate, and a connection section joining them. This segmentation allows each section to be independently positioned and attached, preventing misalignment and creasing while ensuring complete coverage with glued layers on all exceeding parts.
2Reliability
If the external cladding film is folded to cover the side plate, then coverage is achieved, but misalignment and creasing occur
Solution Approach 1:
The connection section between the first and second cladding sections is pre-formed with a bent configuration that matches the corner geometry of the housing. This preliminary shaping eliminates the need for folding during assembly, preventing misalignment and creasing while ensuring complete coverage of both the side plate and bottom plate.
Data Source
AI summary
The present disclosure provides an external cladding film, an energy storage device and electrical equipment. The energy storage device includes an external cladding film and a housing. The external cladding film includes two side film sections each having a first cut groove and a second cut groove. The first cut groove and the second cut groove both penetrate through the side film section. A bottom surface of the first cut groove and a bottom surface of the second cut groove are both spaced from inner edges of the side film sections. Each side film section has a first oblique crease and a second oblique crease. A first free end of the first oblique crease intersects with a side surface of the first cut groove. A distance between the first free end and the bottom surface of the first cut groove is greater than 0.