Lithium Battery Power Supply with UPS and Voltage Drop Protector
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Solution Overview
Problem
Existing power supply systems using lead storage batteries face issues with low energy density, short lifespan, and leakage current, while those using electric double layer condensers are difficult to maintain and suffer from power loss.
Innovation Solution
A power supply system incorporating an uninterruptible power supply (UPS) and a voltage drop protector connected to a lithium battery, which includes multiple battery cells and a battery management system, with a voltage regulator and timer to manage power distribution, ensuring stable power supply to devices with varying tolerable error thresholds for voltage and frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lead storage battery is used as an energy source, then the power supply system can be implemented, but the energy density is low and the lifespan is short
Solution Approach 1:
The patent changes the chemical composition and physical parameters of the battery by using lithium-based materials (lithium ion or lithium polymer) instead of traditional lead storage battery materials. This parameter change results in simultaneously achieving high energy density and long lifespan, resolving the technical contradiction between these two features.
2Loss of energy
If an electric double layer condenser is used as an energy source, then the power supply can be provided, but the system is difficult to maintain and suffers from leakage current loss
Solution Approach 1:
The patent changes the energy storage mechanism from electric double layer condensation to lithium ion/polymer electrochemical reactions. This parameter change eliminates the leakage current issue inherent in condensers and results in a system with no maintenance requirements, resolving both the energy loss and maintenance difficulty problems.
3Adaptability or versatility
If the line lengths between lithium battery and power supply devices are not matched, then installation flexibility is improved, but voltage drop and power supply stability deteriorate
Solution Approach 1:
The patent applies equipotentiality by ensuring that the line lengths from the lithium battery to different power supply devices (UPS and VDP) are equal or substantially equal. This equalizes the voltage distribution and prevents voltage drops, maintaining voltage stability while allowing flexible installation configurations.
Solution Approach 2:
Instead of allowing different line lengths for installation flexibility and accepting voltage instability, the patent inverts the approach by requiring equal line lengths and using this constraint to achieve both installation flexibility (through proper positioning) and voltage stability simultaneously.
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 system provides efficient and stable power to devices for extended periods by utilizing a lithium battery with high energy density, minimizing power loss and maintaining system stability during commercial power source failures.
Implementation Method 1
A lithium battery is connected to the uninterruptible power supply. The lithium battery may include multiple battery cells connected to each other in series.
Data Source
AI summary
A power supply system has a lithium battery. The system includes an uninterruptible power supply (UPS) connected between a commercial power source and a device of a first type. A lithium battery is connected to the uninterruptible power supply. A voltage drop protector (VDP) is connected to the lithium battery and connected between the commercial power source and a device of a second type. Tolerable error thresholds for a voltage and frequency required for the device of the first type are smaller than tolerable error thresholds for voltage and frequency required for the device of the second type.