Backup Power Supply Load Segmentation to Reduce Battery Waste
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Solution Overview
Problem
Existing backup power supply systems waste electrical storage units due to inefficient power distribution during main power supply failures.
Innovation Solution
A backup power supply system that includes an electrical storage unit and a control unit to manage power distribution between a main power supply and loads, switching to the electrical storage unit when the main power supply fails for critical loads while continuing to supply power to non-critical loads from the main power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrical storage unit supplies power to all loads when main power supply fails, then all loads are protected, but the electrical storage unit is wasted and its life is reduced
Solution Approach 1:
The load is divided into first load (critical) and second load (non-critical). The control unit segments power supply strategy: electrical storage unit supplies only the first load when main power fails, while the second load receives power from the main power supply. This segmentation reduces electrical storage unit waste while ensuring critical loads are protected.
Solution Approach 2:
Different power supply sources are assigned to different loads based on their criticality. The first load (critical) receives power from the electrical storage unit with high reliability, while the second load (non-critical) receives power from the main power supply. This local quality differentiation optimizes both reliability and resource utilization.
2Reliability
If the electrical storage unit supplies power to critical loads during main power supply failure, then critical loads are protected, but power distribution efficiency decreases
Solution Approach 1:
The control unit dynamically adjusts power distribution based on real-time detection of main power supply status. When main power fails, the control unit switches the first load to electrical storage unit power supply while maintaining the second load on main power supply. This dynamic adjustment ensures critical loads are protected while optimizing overall power distribution efficiency.
Solution Approach 2:
The control unit continuously detects the electrical characteristic of the main power supply and adjusts power distribution accordingly. When the electrical characteristic falls below the threshold, the control unit activates the electrical storage unit for the first load. This feedback mechanism ensures reliable power supply to critical loads while maintaining efficient power distribution.
3Productivity
If the control unit switches power supply sources based on electrical characteristic threshold, then power distribution is optimized, but system complexity increases
Solution Approach 1:
The control unit monitors the electrical characteristic parameter of the main power supply and compares it against a predetermined threshold. When the parameter changes below the threshold, the control unit switches the power supply source for the first load from main power supply to electrical storage unit. This parameter-based control optimizes power distribution while keeping the control logic relatively simple.
Data Source
AI summary
The problem to be overcome by the present disclosure is to reduce waste of an electrical storage unit. A backup power supply system (1) includes an electrical storage unit (2) and a control unit (3). The electrical storage unit (2) supplies electric power to a load (4) according to an electrical characteristic of a main power supply (5). The main power supply (5) supplies electric power to the load (4). The control unit (3) controls the supply of the electric power from the main power supply (5) and the electrical storage unit (2) to the load (4). The load (4) includes a first load (41) and a second load (42). When the electrical characteristic of the main power supply (5) is equal to or greater than a first threshold value (Vth1), the control unit (3) performs control to have both the first load (41) and the second load (42) supplied with the electric power from the main power supply (5). When the electrical characteristic of the main power supply (5) is less than the first threshold value (Vth1), the control unit (3) performs control to have the second load (42) supplied with the electric power from the main power supply (5) and have the first load (41) supplied with the electric power from the electrical storage unit (2).