Dual-Mode UPS Power Supply Circuit for Fast Mode Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing uninterruptible power supply (UPS) technologies lack flexibility and cannot meet users' requirements in different scenarios, whether they are online or backup UPS, leading to inadequate power supply adjustments.
Innovation Solution
A power supply circuit with DC/DC and AC/DC conversion modules, alternating current input and output interfaces, and a control module that allows for flexible operation modes, including rectification and inversion, enabling both online and backup UPS functions to adapt to varying power demands and conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single UPS mode (online or backup) is provided, then the device structure is simple, but the adaptability to different scenarios is poor
Solution Approach 1:
The patent implements a dual-mode UPS system where a single device can operate in both online UPS mode and backup UPS mode. The power supply circuit includes switching elements that enable the system to adapt its configuration based on operational requirements, allowing one device to fulfill multiple functional roles that traditionally required separate dedicated systems.
2Reliability
If backup UPS mode is used, then the device complexity is reduced, but the switching time increases causing power interruption
Solution Approach 1:
The system performs preliminary action by pre-charging the battery module during normal operation in online UPS mode. The battery is maintained in a charged state ready for immediate discharge, so when switching to backup UPS mode during grid failure, power supply is uninterrupted because the battery is already prepared to deliver power instantly without charging delay.
Solution Approach 2:
The patent ensures continuous power supply to the load by maintaining the battery module in a constantly charged state through the power supply circuit. This continuous energy availability eliminates gaps in power delivery during mode transitions, ensuring that the useful action of powering the load continues without interruption regardless of UPS mode switching.
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
The solution provides a power supply circuit that can satisfy diverse power consumption requirements by offering both online and backup UPS functionalities, reducing switching times and ensuring uninterrupted power supply across different scenarios, while maintaining cost-effectiveness.
Implementation Method 1
The DC/DC conversion module is configured to: in a charging mode, perform voltage conversion on the direct current on the direct current bus, and then charge the battery module; or in a discharging mode, perform voltage conversion on a direct current outputted by the battery module
Implementation Method 2
The first AC/DC conversion module is configured to: in a rectification mode, convert an alternating current provided by the alternating current power supply into a direct current
Implementation Method 3
or in an inversion mode, convert a direct current on the direct current bus into an alternating current
Data Source
AI summary
A power supply circuit includes a DC/DC conversion module, first/second AC/DC conversion modules, an alternating current input interface, and first/second alternating current output interfaces. A first end of the first AC/DC conversion module is connected to a battery module through the DC/DC conversion module, a first end of the second AC/DC conversion module is connected to the first end of the first AC/DC conversion module through a direct current bus, the first alternating current output interface is connected to a second end of the first AC/DC conversion module and a first terminal of the alternating current input interface, the second alternating current output interface is connected to a second end of the second AC/DC conversion module, both the first and second AC/DC conversion modules may operate in a rectification mode or an inversion mode, and the DC/DC conversion module operates in a discharging mode or a charging mode.