Battery Pack Holder With Protrusions For Coupling Strength
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Solution Overview
Problem
There is a need for battery packs that are slim and efficient, capable of maintaining or improving capacity while reducing size, as demand for electronic devices increases, and existing designs face challenges in preventing overheating and explosions due to overcharging, over-discharging, or overcurrents.
Innovation Solution
A battery pack design featuring a plurality of unit cells with a protective circuit module and an upper cover, where the unit cells are oriented side by side, and the protective circuit module includes grooves and protrusions for enhanced coupling with the upper cover, along with spacers to prevent unnecessary electrical connections, and a temperature device to manage thermal issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the battery pack uses a conventional design without grooves and protrusions, then the assembly is simpler, but the coupling strength between the upper cover and protective circuit module is insufficient
Solution Approach 1:
The holder acts as an intermediary component between the unit cells and the protective circuit module, providing protrusions that engage with grooves in the protective circuit module. This intermediary structure enhances the coupling strength between the upper cover and protective circuit module while maintaining a modular assembly approach.
2Volume of moving object
If the battery pack reduces size to be slimmer, then the portability improves, but the thermal management capability deteriorates
Solution Approach 1:
The battery pack is segmented into multiple unit cells arranged in a compact configuration, allowing for efficient space utilization. The protective circuit module is positioned between the upper cover and unit cells, creating a layered structure that maintains slim overall dimensions while providing dedicated thermal management functionality through the protective circuit module's integration.
3Reliability
If the protective circuit module is positioned directly on unit cells without a holder, then the assembly is simpler, but the safety against overcharging, over-discharging, and overcurrents is insufficient
Solution Approach 1:
The holder serves as an intermediary component that properly positions the protective circuit module between the unit cells and upper cover. This intermediary structure ensures reliable electrical connections and proper spacing, enabling the protective circuit module to effectively prevent overcharging, over-discharging, and overcurrents while maintaining organized assembly.
4Volume of moving object
If the upper cover is made thinner to reduce overall battery pack size, then the portability improves, but the structural durability deteriorates
Solution Approach 1:
The holder acts as a structural intermediary that provides rigid support between the unit cells and protective circuit module. This intermediary structure compensates for the reduced thickness of the upper cover, maintaining overall structural durability while enabling a slimmer battery pack design through efficient load distribution.
Data Source
AI summary
A battery pack includes a plurality of unit cells; a protective circuit module on the plurality of unit cells and coupled to the unit cells, and an upper cover on the protective circuit module and including openings defined in its sides. Each of the unit cells includes a can, an electrode assembly accommodated in the can, a cap plate coupled to the can, and a holder between the unit cell and the protective circuit module and including protrusions coupled to the openings of the upper cover. The unit cells are oriented side by side along a first direction such that the cap plates are exposed along the same direction, and the protective circuit module includes grooves defined in its sides and corresponding to the protrusions of the holder.