Self-Loop Detection in Mobile Power Supply Charging Interfaces
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Solution Overview
Problem
Mobile power supplies often form self-loops when their inbound and outbound charging interfaces are connected simultaneously, leading to unnecessary energy consumption and potential damage from excessive heat, with current technologies lacking detection mechanisms for this issue.
Innovation Solution
A self-loop detection method and apparatus that switches and monitors the charging interfaces' signal cables to determine if a self-loop exists, and if so, controls the charging states or current values to prevent damage and alert the user, with options to stop charging or reduce current flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the charging device performs inbound charging and outbound charging at the same time, then the user convenience is improved, but a self-loop may be formed causing energy consumption and heat damage
Solution Approach 1:
The patent performs self-loop detection before allowing simultaneous inbound and outbound charging operations. By detecting the connection state of signal cables Di and Do in advance, the system prevents self-loop formation that would cause energy consumption and heat damage, while still enabling convenient simultaneous charging when safe
2Device complexity
If no detection mechanism is implemented, then the device complexity is reduced, but the reliability of safe operation deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors the connection states of signal cables Di and Do, and based on the detection results, automatically adjusts charging operations. This feedback loop ensures reliable safe operation by preventing self-loop conditions while maintaining manageable device complexity through systematic monitoring
3Loss of energy
If self-loop detection and control mechanisms are added, then the safety and energy efficiency are improved, but the device complexity increases
Solution Approach 1:
The patent employs a self-service approach where the charging device automatically detects self-loop conditions and controls its own charging operations without requiring external intervention. The detection apparatus monitors signal cable states and the control unit autonomously adjusts charging parameters, reducing energy wastage while keeping the added complexity minimal through self-managed operation
Data Source
AI summary
A self-loop detection method for a charging device includes switching a positive signal cable Do and a negative signal cable Do from a connected state to a disconnected state; and detecting whether a positive signal cable Di and a negative signal cable Di are switched from a connected state to a disconnected state; and if yes, determining that a self-loop exists in the charging device.