Air Circulation Control for Fuel Cell Heat and Moisture Management

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Solution Overview

Problem

Portable electronic devices, particularly those using energy storage devices like fuel cells, face challenges with heat generation, restricted operating temperature ranges, oxygen availability, and moisture management, which affect their performance and longevity.

Innovation Solution

A device and method that include a circulation module capable of detecting temperature, oxygen, and moisture thresholds, and generating an air stream to dynamically manage these conditions, using sensors and a processor to control airflow direction and intensity to maintain the energy storage and conversion devices within desired specifications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If higher power drain is used to achieve higher data communication rates and computing speeds, then performance is improved, but heat generation increases

Engineering Contradiction:
Improvedata communication rateVSAvoidheat generation
Core Design Contradiction:
ProductivityVSTemperature

Solution Approach 1:

The patent extracts heat from the energy storage device by introducing a circulation module that draws air across the device to carry away heat, separating the thermal management function from the energy storage function

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent uses pneumatic principles by employing a circulation module with airflow to remove heat from the energy storage device, using gas flow rather than solid or liquid cooling media

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Duration of action of moving object

If greater energy storage capability is used to extend operational life, then duration of action is improved, but heat generation and thermal management complexity increase

Engineering Contradiction:
Improveoperational lifeVSAvoidheat generation
Core Design Contradiction:
Duration of action of moving objectVSTemperature

Solution Approach 1:

The patent applies preliminary action by proactively managing heat removal through the circulation module before excessive heat accumulation occurs, maintaining optimal temperature conditions throughout extended operational periods

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The circulation module operates continuously or dynamically to maintain thermal management throughout the extended operational life, ensuring consistent temperature control as energy is depleted over time

Inventive Principle:
Principle #20Continuity of useful action

3Duration of action of moving object

If fuel cell technology is used to provide greater energy storage capability, then duration of action is improved, but oxygen consumption from ambient air increases

Engineering Contradiction:
Improveoperational lifeVSAvoidoxygen consumption
Core Design Contradiction:
Duration of action of moving objectVSQuantity of substance

Solution Approach 1:

The circulation module serves multiple functions: it removes heat from the energy storage device and simultaneously supplies oxygen to the fuel cell, combining thermal management and reactant delivery into a single system

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses the same air intake for both cooling and oxygen supply, allowing the fuel cell to serve its own oxygen needs without requiring a separate oxygen delivery system

Inventive Principle:
Principle #25Self-service

4Use of energy by moving object

If fuel cell technology is used for energy storage and conversion, then energy storage capability is improved, but moisture management complexity increases

Engineering Contradiction:
Improveenergy storage capabilityVSAvoidmoisture management
Core Design Contradiction:
Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The circulation module performs multiple functions including heat removal, oxygen supply, and moisture management, reducing the need for separate systems for each function

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The circulation module extracts excess moisture from the fuel cell environment through the airflow, removing it from the system to prevent condensation and maintain proper operating conditions

Inventive Principle:
Principle #2Taking out (Extraction)

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 solution effectively prolongs the useful life of energy storage modules by maintaining optimal operating conditions, reducing heat, ensuring adequate oxygen supply, and preventing moisture-related issues, thereby enhancing the performance and recharging capacity of portable electronic devices.

Implementation Method 1

generate an air stream... to maintain the energy storage module within desired specifications and tolerances

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Data Source

PatentUS8318381B2Device and method for enhanced air circulation
Publication Date: 2012.11.27 GOOGLE TECHNOLOGY HOLDINGS LLC
  • US8318381B2 patent drawing
  • US8318381B2 patent drawing
  • US8318381B2 patent drawing

AI summary

A wireless communication device (200) and method (300) adapted to prolong the useful life of an energy storage device is disclosed. In its simplest form, it can include: detecting (310) a first threshold of an energy conversion module comprising at least one of a temperature threshold, oxygen threshold, voltage, a current threshold, a power threshold and moisture threshold; sensing (320) a temperature in proximity to a thermal module comprising at least one of a fuel tank, an electronic computing module, and a housing; and generating (330) an air stream based on the detected first threshold (310) and the sensed temperature (320). The device (200) and method (300) can automatically and dynamically manage, for example, temperature, oxygen and/or moisture of an energy storage module, to maintain the energy storage module within desired specifications and tolerances. This can help to prolong the useful life of the energy storage module and its components and help to maintain a maximum recharging capacity.