Battery Protective Frame for Impact Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Portable electronic devices with embedded batteries face performance degradation and increased heat generation due to external impacts, which can damage the electrode assembly and separator, leading to instability and reduced durability.
Innovation Solution
Incorporating a protective frame within the battery's pouch to shield the electrode assembly from external impacts, combined with a protection circuit module connected to the printed circuit board, which covers the outer surface of the electrode assembly to prevent deformation and ensure stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery is protected against impact, then the durability and stability of the battery is improved, but the device complexity increases due to the protective frame structure
Solution Approach 1:
The protective frame is nested inside the pouch that accommodates the electrode assembly, creating a compact layered structure where the frame is positioned within the existing pouch boundaries, thus providing protection without adding external structural complexity
Solution Approach 2:
The protective frame utilizes a thin-walled structure with covers that extend to cover the outer surface of the electrode assembly, providing impact protection through a delicate but effective barrier that maintains overall device simplicity
2Duration of action of stationary object
If a protective frame is added to shield the electrode assembly, then the durability is improved, but the volume of the battery increases
Solution Approach 1:
The protective frame is positioned inside the pouch boundaries, nesting the protection structure within the existing battery volume rather than adding external extensions, thus minimizing volume increase while providing durability
Solution Approach 2:
The protective frame selectively covers critical areas of the electrode assembly where impact damage is most likely to occur, providing localized protection that maximizes durability benefit while minimizing overall volume consumption
Data Source
AI summary
An electronic device including a battery is disclosed. According to an example embodiment, the electronic device may include: a housing, a printed circuit board (PCB) disposed inside the housing, and a battery disposed inside the housing and configured to supply power to the electronic device. The battery may include: an electrode assembly including a plurality of substrates having a surface coated with a mixture layer, the plurality of substrates being stacked and insulated through a separator and including a pouch in which the electrode assembly is disposed, a protective frame disposed in the pouch and configured to protect the electrode assembly from an external impact, and a protection circuit module (PCM) comprising circuitry connected to the battery cell and electrically connected to the PCB. The protective frame may include: a central portion disposed to cross an inside of the electrode assembly in a direction perpendicular to a stacking direction of the substrates, and at least one cover connected to at least one end of the central portion and extending in a direction parallel to the stacking direction to surround at least a portion of an outer surface of the electrode assembly.