UPS Control Power via Merged Conversion Unit

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The existing uninterruptible power supplies require an additional conversion stage to provide stable power to the control unit, leading to increased volume, circuit costs, and efficiency reduction due to further conversion losses.

Innovation Solution

The uninterruptible power supply design eliminates the need for an additional conversion stage by using a switching unit, charging unit, energy storage unit, and conversion unit to switch and convert power sources directly, with the conversion unit providing power to both the load and charging unit when the input is unavailable, and the charging unit stabilizing voltage for the control unit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a further conversion stage (switching power supply) is added between the energy storage unit and the control unit to provide stable working power, then the stability and reliability of power supply to the control unit is improved, but the device volume increases, circuit costs increase, and conversion losses increase reducing efficiency

Engineering Contradiction:

Improvepower supply stabilityVSAvoidcircuit components

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the conversion unit that supplies power to the load with the charging unit that supplies power to the control unit. The conversion unit converts power from the energy storage unit and provides it to both the load and the charging unit, eliminating the need for a separate switching power supply dedicated to the control unit. This integration reduces component count while maintaining reliable power supply through coordinated control of the same conversion circuit.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

Engineering Contradiction:

Improvepower supply stabilityVSAvoiddevice volume

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The patent combines the functions of the conversion unit and charging unit into a single integrated circuit architecture. The conversion unit serves dual purposes: powering the load and providing input power to the charging unit which then regulates power for the control unit. This functional merging eliminates redundant power conversion circuits and reduces overall device volume while ensuring stable control unit operation.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

Engineering Contradiction:

Improvepower supply stabilityVSAvoidconversion losses

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent integrates the conversion unit to serve both the load and the charging unit, eliminating the need for a separate switching power supply. By using a single conversion stage that feeds both the load and the charging circuit, the system avoids the additional conversion losses that would occur in a multi-stage power conversion architecture, thereby improving overall efficiency while maintaining reliable control unit power supply.

Inventive Principle:

Principle #5Merging (Combining)

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

This design reduces circuit components and costs, minimizes conversion losses, and maintains efficient power supply to the load and control unit, enhancing overall efficiency and reducing volume.

Implementation Method 1

The switching unit is coupled to the input end and the output end. When the input power source is available, the switching unit switches the input power source into a first output power source and provides the first power source to the output end

Methodology Applied

Scientific EffectElectrical switching:

Implementation Method 2

The charging unit is coupled to the input end. The charging unit converts the input power source into a first power source and provides the first power source to the control unit and to charge the energy storage unit

Methodology Applied

Scientific EffectPower conversion:

Implementation Method 3

When the input power source is not available, the conversion unit converts the electricity of the energy storage unit into a second output power source and provide the second output power source to the output end

Methodology Applied

Scientific EffectPower conversion:

Implementation Method 4

the conversion unit provides a second power source to the charging unit and the charging unit converts the second power source into the first power source and provides the first power source to the control unit

Methodology Applied

Scientific EffectPower conversion:

Data Source

PatentUS10992152B2Uninterruptible power supply and method of operating the same

Publication Date: 2021.04.27 DELTA ELECTRONICS INC(CN)

AI summary

An uninterruptible power supply includes a switching unit, a charging unit, an energy storage unit, a conversion unit, and a control unit. When an input power source is available, the switching unit provides a first output power source and the charging unit converts the input power source into a first power source to provide the first power source to the control unit and to charge the energy storage unit. When the input power source is not available, the conversion unit converts the electricity of the energy storage unit into a second output power source and provides the second output power source. When the input power source is not available, the conversion unit provides a second power source to the charging unit so that the charging unit converts the second power source into the first power source and provides the first power source to the control unit.