Modular UPS Battery String Switching for Multi-Voltage Backup Power
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Solution Overview
Problem
Existing energy storage systems lack flexibility in controlling output, requiring multiple back-up power supplies in stationary electric systems.
Innovation Solution
A high power uninterruptible power supply system with a battery string comprising multiple battery modules, each associated with a switching arrangement in an H-bridge configuration, allowing for controlled inclusion or exclusion of battery modules in the current path to establish various output voltages and currents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple back-up power supplies are used to ensure emergency power supply, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements a multi-functional uninterruptible power supply system where a single device can provide multiple output voltages (e.g., 230V, 115V, 400V) to serve different loads simultaneously. The system uses controllable switching arrangements to connect battery modules in series or parallel configurations, enabling one power supply unit to replace what would traditionally require multiple separate back-up power supplies, thereby maintaining reliability while reducing system complexity
Solution Approach 2:
The system dynamically reconfigures the battery module connections through controllable switching arrangements. The switching arrangements can change the series/parallel configuration of battery modules based on the required output voltage and load demands, allowing the power supply to adapt its output characteristics in real-time to serve multiple different loads from a single unit
2Adaptability or versatility
If traditional energy storage systems are used, then system simplicity is maintained, but adaptability worsens due to lack of flexibility in controlling output
Solution Approach 1:
The patent divides the battery string into multiple independently controllable battery modules, each with its own switching arrangement. This segmentation allows the system to selectively connect or disconnect individual modules to achieve different output voltages and configurations. The modular architecture provides fine-grained control over the output characteristics, enabling the system to adapt to various load requirements by adjusting which modules are active and how they are connected
Solution Approach 2:
The controllable switching arrangements enable dynamic reconfiguration of the battery module connections. The system can switch between series connections (for higher voltage outputs) and parallel connections (for higher current outputs) based on real-time demands. This dynamic adaptability allows a single power supply system to serve multiple different load types with varying voltage and current requirements
3Power
If multiple back-up power supplies are deployed, then power supply capability is improved, but cost increases
Solution Approach 1:
The patent creates a universal power supply unit capable of delivering multiple output voltages (230V, 115V, 400V) and serving different load types simultaneously. By using controllable switching arrangements to configure battery modules in various series/parallel combinations, a single unit can replace multiple specialized power supplies, thereby maintaining full power supply capability while reducing the total number of units required and associated costs
Data Source
AI summary
The application relates to a high power uninterruptible power supply connected to a stationary electric system. The high power uninterruptible power supply includes an electric cabinet includes a battery string with a controllable current path therethrough including at least one battery module. A first output electrically connected to a first end of the battery string and which is connectable to a first load of the stationary electric system. A second output electrically connected to the battery string so as to facilitate supplying a load with the voltage of at least one battery module. A string controller configured for controlling the current path through the battery string and thereby the voltage level of at least one of the first and second uninterruptible power supply output.