Backup Power Circuit for Stable Load Voltage During Failures
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Solution Overview
Problem
Existing backup power systems fail to maintain stable voltage supply to loads when the primary power source becomes defective, leading to operational issues.
Innovation Solution
A backup power supply system with a power storage unit, charging and discharging circuits, and a control circuit that manages the switching between power sources to maintain a stable voltage supply to loads during power failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power storage unit discharges power directly to the load, then the load can operate during power supply failure, but the output voltage drops below the required voltage for load operation
Solution Approach 1:
The patent introduces a backup power supply system with a power storage unit (capacitor) as an intermediary between the power supply and load. During power failure, the capacitor discharges through a discharging circuit that acts as a mediator to maintain stable voltage output to the load, preventing direct voltage drops that would occur with simple capacitor discharge.
Solution Approach 2:
The system dynamically changes operating parameters by switching between charging and discharging modes based on power supply status. The control circuit monitors voltage levels and adjusts the discharge rate and voltage output parameters to maintain stable load operation throughout the capacitor discharge process, preventing voltage from dropping below operational thresholds.
2Duration of action of stationary object
If the power storage unit is discharged to charge the power supply, then the power supply can be restored, but the voltage supplied to the load drops according to the discharge of the power storage unit
Solution Approach 1:
The patent segments the power flow paths into distinct charging and discharging circuits. The discharging circuit is specifically designed to maintain stable voltage to the load while the charging circuit restores the power supply. This segmentation allows independent optimization of each function - voltage stability for load operation and power restoration for the supply - without mutual interference.
Solution Approach 2:
The system performs preliminary action by pre-charging the power storage unit (capacitor) during normal operation before power failure occurs. This ensures the capacitor is fully charged and ready to immediately provide stable power to the load when failure occurs, eliminating any voltage instability during the transition period.
3Duration of action of moving object
If the electric double layer capacitor discharges to extend its life, then the capacitor longevity increases, but the voltage supplied to the load becomes insufficient for operation
Solution Approach 1:
The discharging circuit serves as an intermediary between the capacitor and load, managing the discharge process to extend capacitor life while maintaining adequate voltage. The circuit controls the discharge rate and voltage levels, ensuring the capacitor operates within parameters that maximize longevity while the load receives sufficient voltage for continuous operation.
Solution Approach 2:
The control circuit dynamically adjusts discharge parameters including voltage and current levels based on capacitor state and load requirements. By optimizing these parameters throughout the discharge cycle, the system extends capacitor operational life while preventing voltage from dropping below the minimum required for load operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures continuous operation of loads by stabilizing the voltage supply from the power storage unit even when the primary power source fails, extending the life of the power storage unit and preventing voltage drops.
Implementation Method 1
a power storage unit 5... configured to charge the power storage unit 5 with power from the conductive path 41... configured to discharge power stored in the power storage unit 5 to the conductive path 41
Data Source
AI summary
A backup power supply system is configured to be connected between a power supply and a load. The backup power supply system includes a first port, a second port, a conductive path, a power storage unit, a charging circuit, a discharging circuit, a switch; and a control circuit. The first port is configured to be connected to the power supply. The second port is configured to be connected to the load. The conductive path connects the first port to the second port. The charging circuit is provided in a first path connecting the conductive path to the power storage unit. The discharging circuit is provided in a second path that connecting the conductive path to the power storage unit. The switch is provided in the conductive path between the first port and the charging circuit and between the first port and the discharging circuit, and is configured to make the conductive path electrically conductive or electrically non-conductive. The control circuit is configured to control the switch, the charging circuit, and the discharging circuit.