Automatic Flight-Safe Battery Indicator for Aircraft Transport

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Solution Overview

Problem

Modern battery technologies face safety issues due to thermal runaway events, particularly in lithium Cobalt rechargeable batteries, which can occur at low temperatures when damaged, leading to overheating, smoke, and flame, and existing regulations focusing on lithium content are inadequate for ensuring safe transportation.

Innovation Solution

An automatic flight-safe indicator for batteries that displays the power storage magnitude in watt-hours, with a label indicating a safety limit, and a programmable icon changing from safe to unsafe based on this limit, allowing human operators to determine if a battery is safe for aircraft transport by comparing the displayed value to the safety limit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the energy density of batteries is increased to store more energy, then the power storage capacity is improved, but the risk of thermal runaway events increases

Engineering Contradiction:

Improveenergy storage capacityVSAvoidsafety against thermal runaway

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The system performs preliminary assessment of battery safety by measuring voltage and temperature before transportation. The flight-safe icon is pre-programmed to automatically indicate whether the battery meets safety criteria, preventing unsafe batteries from being loaded onto aircraft in the first place

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system provides immediate visual feedback through the flight-safe icon (green for safe, red for unsafe) based on real-time voltage and temperature measurements. This feedback mechanism allows operators to quickly determine battery safety status and take appropriate actions

Inventive Principle:

Principle #23Feedback

2Device complexity

If manual inspection methods are used to determine battery safety, then the device complexity is reduced, but the measurement precision and reliability of safety determination decreases

Engineering Contradiction:

Improvesimplicity of safety determination systemVSAvoidaccuracy of safety assessment

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The battery system performs self-assessment of its safety status through integrated voltage and temperature sensors. The flight-safe icon automatically updates based on the battery's own measurements, eliminating the need for complex external inspection equipment while ensuring consistent and accurate safety evaluation

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system monitors changes in critical parameters (voltage and temperature) to determine battery safety. By tracking parameter changes rather than relying on static labels or manual inspection, the system achieves high measurement precision with relatively simple device complexity

Inventive Principle:

Principle #35Parameter changes

3Ease of manufacture

If existing regulations focusing on lithium content are used, then the ease of manufacture is improved, but the reliability of safety assurance is insufficient

Engineering Contradiction:

Improvesimplicity of compliance verificationVSAvoideffectiveness of safety assurance

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The system replaces manual inspection methods and static labeling with an automated electronic assessment system. Voltage and temperature sensors continuously monitor battery status, and the flight-safe icon provides real-time safety indication, eliminating reliance on lithium content labels that do not reflect actual safety conditions

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 solution enables safe transportation of batteries by ensuring that only those within the safety limit are allowed on aircraft, reducing the risk of thermal runaway events and enhancing safety by providing a clear, recognizable visual indicator of flight safety.

Implementation Method 1

The power storage magnitude indicator is back-lit by a light emitting diode

Methodology Applied

Scientific EffectLight emitting diode: Light Emitting Diode

Data Source

PatentUS8941507B2Automatic flight-safe indicator and method of use for batteries

Publication Date: 2015.01.27 STRYTEN ENERGY LLC

AI summary

An flight-safe indicator for a battery displays the flight-safety state of a battery to be transported by an aircraft. The indicator can be easily recognized by ground personnel anywhere regardless of the language they speak or read. The indicator comprises an icon indicating that the battery is safe for flight and would be easily recognized by personnel at an airport. The icon would be placed on the battery or on the battery packaging prior to loading on the aircraft. When the magnitude of power stored on the battery exceeds a safety threshold, the icon changes to an indication that the battery is not safe for transporting by aircraft and the operator may discharge the battery using a load until it reaches a safe level.