Cylindrical Battery Pack Terminals for High-Current Tool Connections
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery packs for large power tools face issues with inconvenient electrical connections, poor reliability, and non-compliance with safety regulations due to inadequate terminal structures.
Innovation Solution
The implementation of cylindrical battery and columnar tool connection terminals capable of withstanding high currents, along with a compact, asymmetrical arrangement and sealing structures, ensures reliable and safe electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional battery terminals are used for large power tools, then the device can be powered, but the electrical connection is inconvenient and unreliable
Solution Approach 1:
The patent employs cylindrical battery connection terminals with rounded contours instead of conventional flat or angular terminal designs. This curved geometry provides mechanical advantages including better contact stability, resistance to vibration and shock, and ease of alignment during connection, thereby simultaneously improving reliability and operational convenience.
Solution Approach 2:
The patent implements an asymmetrical arrangement of battery connection terminals with different heights and positions. This asymmetric configuration ensures proper alignment and insertion direction, prevents incorrect connections, and facilitates easy identification and operation, thus enhancing both connection reliability and ease of operation.
2Reliability
If battery terminals are designed for high current capacity, then safety regulations are met, but the terminal structure becomes more complex
Solution Approach 1:
The patent integrates multiple functions into the battery connection terminals, combining high current conduction capability with mechanical alignment features, sealing structures, and positioning elements into a single unified component. This merging approach achieves safety compliance through integrated design rather than adding separate complex components.
Solution Approach 2:
The battery connection terminals are designed as multi-functional elements that simultaneously provide electrical conduction, mechanical alignment, sealing, and structural support. This universal design allows a single terminal structure to fulfill multiple requirements including high current capacity and safety regulation compliance without increasing overall complexity.
3Volume of moving object
If multiple battery connection terminals are arranged compactly, then the battery pack size is reduced, but the current handling capability may be compromised
Solution Approach 1:
The patent utilizes three-dimensional spatial arrangement of battery connection terminals with varying heights and vertical positioning. By exploiting the vertical dimension and creating multi-level terminal configurations, the design achieves compact horizontal footprint while maintaining adequate current handling capability through optimized current distribution paths.
Solution Approach 2:
The patent employs a nested arrangement where battery connection terminals are positioned within receiving cavities or mounting structures that optimize space utilization. The terminals are integrated into the device body structure with receiving portions that accommodate them, creating a compact nested configuration that maintains current handling capability while minimizing overall battery pack volume.
Data Source
AI summary
A battery pack includes a battery pack body and a battery connection apparatus. The battery connection apparatus includes a device body and multiple battery connection terminals disposed on the device body and capable of at least transmitting electrical energy. Each of the multiple battery connection terminals is configured to have a cylindrical structure and is configured to withstand a maximum current of less than or equal to 400 A.