Composite Battery Parallel Cell Encapsulation
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Solution Overview
Problem
As electronic devices become more powerful, their power consumption increases, necessitating higher battery capacity, but existing solutions with multiple independent batteries result in inefficient space use and low energy density due to multiple folded edges from separate encapsulation films.
Innovation Solution
A composite battery design that encapsulates multiple battery cells in a single film, connecting them in parallel with a common tab and protection plate, reducing folded edges and internal resistance, and using an insulation layer to prevent short circuits, while allowing for varying cell lengths and arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple independent batteries are used to increase battery capacity, then the power consumption requirement is met, but the space utilization rate decreases due to multiple folded edges from separate encapsulation films
Solution Approach 1:
The patent merges multiple battery cells into a single composite battery structure, where multiple battery cells are enclosed by one common first encapsulation film instead of each cell having its own separate encapsulation film. This consolidation reduces the number of folded edges and eliminates redundant encapsulation structures, thereby decreasing overall space occupation while maintaining increased battery capacity through the parallel connection of multiple cells.
Solution Approach 2:
The patent segments the battery system into multiple battery cells that are connected in parallel within a single encapsulation film. This segmentation allows for increased total capacity while using a unified encapsulation structure, reducing the space waste associated with multiple separate encapsulation films and their respective folded edges.
2Quantity of substance
If multiple independent batteries are used to increase battery capacity, then the power consumption requirement is met, but the energy density decreases due to inefficient space use
Solution Approach 1:
By combining multiple battery cells into one composite battery unit with a single encapsulation film, the patent eliminates the space waste from multiple separate encapsulation structures. This merging increases the effective energy density by reducing non-active materials and improving the ratio of active battery material to total volume, while still achieving the required capacity through parallel cell connections.
3Reliability
If multiple separate encapsulation films are used for each battery cell, then each cell is individually protected, but the number of folded edges increases occupying more space
Solution Approach 1:
The patent applies a single first encapsulation film to enclose multiple battery cells together, replacing the need for multiple separate encapsulation films. This unified encapsulation structure provides collective protection to all battery cells while significantly reducing the number of folded edges, thereby decreasing space occupation without compromising the protective function.
Solution Approach 2:
The single first encapsulation film serves multiple functions: it protects multiple battery cells simultaneously, provides a unified structural framework, and reduces the overall number of folded edges. This multi-functional approach maintains protection reliability while minimizing space consumption compared to individual encapsulation for each cell.
Data Source
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AI summary
The present disclosure relates to a composite battery and an electronic device. The composite battery includes: an encapsulation film; and a plurality of battery cells that are connected with one another in parallel, and are encapsulated in the encapsulation film.