Fuel Cell Backup Power System for Unstable Grid Reliability

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Solution Overview

Problem

Conventional power supply systems fail to maintain operation of critical loads, such as base stations or file servers, during unstable city power conditions like power failures or tripped breakers, as they lack a reliable backup power source.

Innovation Solution

A power supply system comprising a main power apparatus and a backup power apparatus, where the backup power apparatus includes a recombination unit to generate hydrogen from methanol, a fuel cell unit to produce power, and a transformation unit to convert this power into usable backup power, activated by a control unit when city power is unstable.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional power supply system is used, then the system structure is simple, but the load cannot operate normally when city power is unstable

Engineering Contradiction:

Improvepower supply reliabilityVSAvoidpower supply system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The power supply system is divided into two independent parts: a main power apparatus for normal operation and a backup power apparatus for emergency situations. This segmentation allows the system to maintain simplicity during normal operation while providing reliability during power failures, as each module can operate independently without requiring the other to be fully functional.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The backup power apparatus is prepared in advance with stored hydrogen and oxygen components before power failures occur. The reformer is pre-configured to convert methanol to hydrogen, and the fuel cell is ready to generate electricity immediately when needed, eliminating startup delays and ensuring continuous power supply without requiring complex real-time decision systems.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If a backup power apparatus with multiple components is added, then power supply reliability is improved, but the device complexity increases

Engineering Contradiction:

Improvebackup power availabilityVSAvoidnumber of components

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Multiple functional components (reformer, fuel cell, storage tanks, and control systems) are merged into a single integrated backup power apparatus. This consolidation reduces the overall system complexity by creating a unified module that operates as one coordinated unit rather than separate independent systems, while still providing comprehensive backup power functionality.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The backup power apparatus is designed to perform multiple functions: storing hydrogen and oxygen, converting methanol to hydrogen via reforming, generating electricity through the fuel cell, and providing power output. This multi-functionality reduces the need for separate dedicated systems for each function, thereby reducing overall device complexity while maintaining high reliability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If the backup power apparatus is activated during power failure, then continuous power supply is achieved, but energy consumption increases

Engineering Contradiction:

Improvecontinuous power supplyVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The backup power apparatus operates periodically rather than continuously - remaining in standby mode during normal city power operation and activating only when power failures occur. This periodic operation minimizes energy consumption by keeping the system dormant when not needed, while ensuring continuous power supply availability when required, thus resolving the contradiction between reliability and energy loss.

Inventive Principle:

Principle #19Periodic action

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

Ensures continuous operation of loads by providing stable backup power during city power instability, enhancing the reliability and efficiency of power supply through the use of a fuel cell-based backup system.

Implementation Method 1

The reformer combines a methanol component to generate a hydrogen component

Methodology Applied

Scientific EffectChemical reaction: Chemical Bonding

Implementation Method 2

The cell stack generates a first power according to the hydrogen input, the water input, and the air input

Methodology Applied

Scientific EffectFuel cell electrochemical reaction: Fuel Cell

Data Source

PatentUS9197099B2Power supply system comprising a fuel cell

Publication Date: 2015.11.24 CHUNG HSIN ELECTRIC & MACHINERY MFG

AI summary

A power supply system driving a load including a main power apparatus and a backup power apparatus is disclosed. The main power apparatus provides main power to the load according to city power. The backup power apparatus provides backup power to the load when the city power does not correspond to a first pre-determined condition and includes a recombination unit, a fuel cell unit, a transformation unit, and a control unit. The recombination unit recombines a methanol component to a hydrogen component. The fuel cell unit receives the hydrogen component to generate a first power. The transformation unit detects the city power and transforms the first power to generate the backup power. When the city power does not correspond to a first pre-determined condition, the control unit activates the reformer, the fuel cell unit, and the transformation unit to generate the backup power.