Battery Pack Vent Hole With Audible Gas Warning
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Solution Overview
Problem
Conventional battery packs lack a mechanism to immediately alert users to gas generation in battery cells, which can lead to safety issues.
Innovation Solution
A battery pack design featuring a vent hole with a sound generator that produces an audible alert when gas is generated, utilizing a sound generator with specific structural components to facilitate gas flow and sound production without additional power or sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional battery pack design is used without additional alerting mechanisms, then the device complexity and cost are kept low, but the ability to immediately detect and alert users of gas generation is lost
Solution Approach 1:
The vent hole structure serves dual functions: it allows gas to escape from the battery cell while simultaneously generating an audible warning sound through the sound generator component. The system monitors and alerts itself without requiring external sensors or power sources, as the gas flow itself activates the sound generation mechanism.
Solution Approach 2:
The patent employs a visual indication mechanism where the vent hole or associated components change appearance (such as color or transparency) to signal gas generation. This provides immediate visual feedback to users complementing the acoustic alert, enhancing safety monitoring capability through simple optical changes rather than complex electronic displays.
2Difficulty of detecting and measuring
If additional sensors and power sources are added to detect gas generation, then the detection capability is improved, but the device complexity and cost increase
Solution Approach 1:
The vent hole structure serves dual functions: it allows gas to escape from the battery cell while simultaneously generating an audible warning sound through the sound generator component. The system monitors and alerts itself without requiring external sensors or power sources, as the gas flow itself activates the sound generation mechanism.
Solution Approach 2:
The sound generator acts as an intermediary mechanism that translates the physical presence and flow of gas into an audible signal. Instead of using electronic sensors to detect gas composition or pressure, the patent employs the gas flow itself as the activating force for the sound generator, creating a direct mechanical-acoustic conversion that simplifies the detection system.
3Object-generated harmful factors
If the vent hole is kept open to allow gas discharge, then gas safety is maintained, but the ability to generate an audible warning is reduced
Solution Approach 1:
The vent hole structure serves dual functions: it allows gas to escape from the battery cell while simultaneously generating an audible warning sound through the sound generator component. The system monitors and alerts itself without requiring external sensors or power sources, as the gas flow itself activates the sound generation mechanism.
Solution Approach 2:
The sound generator utilizes mechanical vibration principles where the flowing gas causes a diaphragm or similar component to vibrate, producing an audible warning sound. This mechanical vibration approach converts the kinetic energy of the escaping gas directly into acoustic energy, ensuring that the warning effectiveness is maintained while the vent hole remains open for continuous gas discharge.
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
Enables immediate user notification of gas generation, enhancing safety by allowing prompt action without requiring external power or sensors.
Implementation Method 1
the sound generator being configured to generate a sound by the flow of the gas when the gas is discharged from the casing through the vent hole
Data Source
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AI summary
Disclosed is a battery pack including a battery cell, a casing configured to receive the battery cell, the casing having formed therein a vent hole configured to allow gas generated in the battery cell to be discharged therethrough, and a sound generator installed in the vent hole so as to block the vent hole, the sound generator being configured to allow the gas to pass therethrough, the sound generator being configured to generate a sound by the flow of the gas when the gas is discharged from the casing through the vent hole.