Modular Power Supply System With Electronic Fuse Overcurrent Protection
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Solution Overview
Problem
In power supply systems, when a failure occurs in one of the power consumption circuits, it can cause excessive current to flow, leading to wasteful power consumption and potential damage, necessitating immediate overcurrent cutoff to maintain normal operation of other circuits.
Innovation Solution
A power supply system incorporating an electronic fuse that generates a signal based on current levels and controls a switch to disconnect power from faulty circuits, allowing for overcurrent protection and seamless replacement with functioning circuits, with components mounted on separate circuit boards connected via connectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a power consumption circuit fails and causes overcurrent, then the failed circuit continues to consume power wastefully, but immediately cutting out the overcurrent may affect the operation of other normal circuits
Solution Approach 1:
The patent divides the power supply system into multiple independent power supply units, each with its own electronic fuse and switch. When one circuit fails, only the corresponding power supply unit is disconnected, while other units continue to operate normally. This segmentation isolates the fault to a specific module without affecting the entire system.
Solution Approach 2:
The patent introduces an electronic fuse as an intermediary component between the power source and the power consumption circuit. The electronic fuse detects overcurrent conditions and generates signals to control switches, acting as a mediator that automatically disconnects faulty circuits while preserving the operation of normal circuits through signal-based control.
2Area of stationary object
If an electronic fuse and switch are mounted on the same circuit board, then the structure is compact, but replacing a failed power consumption circuit becomes difficult
Solution Approach 1:
The patent segments the power supply system into modular power supply units that can be independently replaced. By mounting each power supply unit on a separate circuit board with standardized connectors, the system enables easy replacement of failed modules without affecting other parts of the system.
Solution Approach 2:
The patent designs power supply units with standardized interfaces and connectors that can be universally applied across different modules. This universal design allows any power consumption circuit to be replaced by simply swapping the entire power supply unit, making the replacement process straightforward and independent of specific circuit configurations.
3Device complexity
If power supply units are designed as integrated modules, then the system structure is simplified, but the ability to replace individual failed circuits is reduced
Solution Approach 1:
The patent divides the power supply system into independent power supply units, each functioning as a self-contained module. This segmentation maintains simple overall system structure while enabling flexible replacement of individual units, as each module can be independently swapped without affecting others.
Solution Approach 2:
The patent designs the system to allow easy discarding of failed power supply units and recovery through replacement with functional units. The modular design with standardized connectors enables quick disposal of defective modules and recovery of system operation by installing replacement units, balancing structural simplicity with replacement flexibility.
Data Source
AI summary
A power supply system includes a first circuit board mounting a power source circuit and an electronic fuse and a second circuit board mounting a power consumption circuit and a switch. When the electronic fuse detects an overcurrent due to a failure occurring in the power consumption circuit, the power supply system immediately cuts out an overcurrent flowing through the power consumption circuit while changing the switch from an open state to a short-circuited state according to a fault signal output from the electronic fuse. Accordingly, it is possible to safely separate the first circuit board and the second circuit board, and therefore it is possible to replace the second circuit board with another circuit board mounting a normal power consumption circuit.