UPS Controller Battery Charging Path Management
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Solution Overview
Problem
Existing UPS systems consume additional power for charging batteries during peak load periods, leading to repeated charging and discharging, which decreases power efficiency and battery lifespan.
Innovation Solution
A UPS system with a controller that selectively connects or disconnects the charging path between the UPS and the battery array, managing power flow to prevent charging during peak load periods and optimize battery discharge based on electrical fees and lifespan considerations, using power switches and a diode to control power flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UPS charges the battery during peak load periods when power is supplied from the grid, then the battery remains charged for future use, but additional power is consumed for charging reducing overall power efficiency and increasing operational costs
Solution Approach 1:
The system dynamically adjusts the charging path connectivity based on operational conditions. The controller selectively connects or disconnects the charging path between the UPS and battery array according to whether the system is in maximum load period or not, optimizing power efficiency while ensuring battery availability when needed.
Solution Approach 2:
The battery is charged in advance during periods when power is not needed for maximum load operation. The controller charges the battery array when the UPS is not in maximum load period, so the battery is ready for future peak demands without consuming expensive peak period power.
2Loss of energy
If the battery is discharged during maximum load period to save electrical fees, then operational costs are reduced, but the battery is likely to be recharged at high electrical fees reducing power efficiency
Solution Approach 1:
The system implements periodic charging and discharging cycles based on operational periods. The controller discharges the battery during maximum load periods when electrical fees are high, then recharges during non-peak periods when fees are lower, creating an optimized periodic pattern that reduces overall operational costs while maintaining power efficiency.
3Loss of energy
If the battery is repeatedly charged and discharged during maximum load period, then power cost management is attempted, but the battery lifespan decreases
Solution Approach 1:
The controller monitors the battery's state of charge and operational conditions to make intelligent decisions about charging and discharging. By using feedback from battery status and load period detection, the system optimizes charge/discharge cycles to manage power costs while avoiding excessive cycling that would reduce battery lifespan.
Data Source
AI summary
An uninterruptible power supply (UPS) system for preventing charging of batteries is provided. The system includes a UPS configured to supply power from a grid to a load, a battery unit configured to be charged with the power supplied from the UPS, and a controller configured to selectively supply the power from the grid to the UPS and selectively connect or disconnect a charging path between the UPS and the battery unit.