Battery Pack Terminal Arrangement for Reverse-Mount Misconnection Prevention
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Solution Overview
Problem
In compact electronic devices, incorrect mounting of battery packs or defective contact shapes can lead to improper operation, as the arrangement of terminals differs among device models, causing potential misconnection between the battery pack's terminals and the device's contacts.
Innovation Solution
A battery pack design with terminals arranged in a specific order and configuration, including a negative terminal between the temperature detection and control terminals, and concave portions to prevent erroneous insertion, ensuring proper connection and insulation, and a locking mechanism to secure the pack in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals are arranged in conventional order (control, negative, temperature, positive), then manufacturing is simple, but misconnection risk increases when battery pack is incorrectly mounted or contacts are defective
Solution Approach 1:
The patent applies asymmetry by arranging terminals in a non-conventional order: control terminal, temperature detection terminal, negative terminal, positive terminal. This asymmetric arrangement breaks the symmetry of traditional terminal layouts, making it impossible for contacts to incorrectly connect to wrong terminals even when the battery pack is mounted in reverse or contacts are defective, thereby improving connection reliability without significantly increasing device complexity
Solution Approach 2:
The patent inverts the conventional terminal arrangement by placing the negative terminal between the temperature detection terminal and positive terminal, rather than between control and temperature terminals. This inversion of the standard layout ensures that even if contacts are defective or mounting is incorrect, the electrical connection path cannot form a valid circuit, preventing misconnection and enhancing reliability
2Manufacturing precision
If battery pack design is optimized for specific device model, then connection precision is improved, but adaptability to other devices decreases
Solution Approach 1:
The patent achieves universality by designing a terminal arrangement that functions correctly across different device models and mounting conditions. The asymmetric terminal layout (control, temperature, negative, positive) ensures proper electrical connection regardless of which device model the battery pack is used in, or whether the mounting is correct, making the battery pack compatible and reliable across multiple applications without requiring model-specific customization
Data Source
AI summary
Embodiments of the invention provide a battery pack including a pack body and a plurality of terminals. The pack body has first and second main surfaces that are opposed to each other in a first axis direction, first and second end surfaces that are opposed to each other in a second axis direction orthogonal to the first axis direction, and first and second side surfaces that are opposed to each other in a third axis direction orthogonal to the first axis direction and the second axis direction. The plurality of terminals includes a positive terminal, a negative terminal, a temperature detection terminal, and a control terminal that are arranged on the first end surface along the third axis direction. The negative terminal is arranged between the temperature detection terminal and the control terminal and closer to the control terminal than the temperature detection terminal.