Battery Pack Fuse Control for Overcharge and Short-Circuit Protection
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Solution Overview
Problem
Existing battery packs lack effective protection mechanisms against overcharge and short circuits, which can damage battery cells.
Innovation Solution
A battery pack design incorporating a series-connected plurality of battery cells with a fuse and dual protective circuits - a primary and secondary protective circuit - that measure voltages and control the fuse operation based on predefined cut-off voltages to prevent overcharge and short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a battery pack is designed to fit into a specific space with a predetermined shape, then the space utilization is improved, but the ability to accommodate battery modules of different shapes and sizes deteriorates
Solution Approach 1:
The battery pack is divided into multiple battery module receiving spaces, each capable of independently accommodating different battery modules. The battery pack case is segmented into a first case and a second case, with each case having corresponding receiving spaces that can be independently configured.
Solution Approach 2:
The battery module receiving spaces are designed with flexible dimensions and configurations that can be adjusted based on the specific battery modules being installed. The receiving spaces can accommodate battery modules of different shapes and sizes through variable structural parameters.
2Reliability
If battery modules are tightly fixed in the battery pack to prevent movement, then the reliability is improved, but the device complexity deteriorates due to additional fixing structures
Solution Approach 1:
The fixing function is merged into the battery module receiving spaces themselves. The receiving spaces are formed by the case structures and internal components such as cooling plates and insulation plates, which simultaneously serve as structural supports and fixing elements, eliminating the need for separate fixing structures.
Solution Approach 2:
The battery modules are fixed by the receiving spaces through their own structural design. The case, cooling plates, and insulation plates work together to automatically secure the battery modules in place through friction, geometric constraints, and structural integration, without requiring external fixing mechanisms.
3Stability of the object's composition
If the battery pack uses a rigid fixed structure to maintain shape, then the structural stability is improved, but the adaptability to different battery module configurations deteriorates
Solution Approach 1:
The battery module receiving spaces are designed with dynamic dimensional parameters that can be adjusted to match different battery module configurations. The case and internal components can be configured in various arrangements while maintaining overall structural stability through modular design principles.
Data Source
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AI summary
A battery pack is disclosed. According to an embodiment of the present disclosure, a battery pack includes: a plurality of battery cells connected in series to each other; a fuse connected between two of the plurality of battery cells; and a primary protective circuit configured to measure voltages of the plurality of battery cells and control a protective operation of the fuse according to a highest voltage of the measured voltages.