Battery Housing Gas Vent Whistle for Thermal Event Warning
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Solution Overview
Problem
In hybrid and electric vehicles, serious accidents can lead to damaged battery cells causing short circuits, increased temperature, and gas leakage, posing a risk of thermal events and toxic gas release, which existing safety systems detect with high technical complexity.
Innovation Solution
A device within the high-voltage store housing allows escaping gas to generate a purely mechanical acoustic warning signal, using a whistle or pipe mechanism to produce a sound audible to occupants, independent of electrical systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensors and evaluation electronics are used to detect dangerous states, then detection reliability is improved, but device complexity increases
Solution Approach 1:
The invention extracts the detection function from complex electronic sensor systems and implements it through a simple mechanical acoustic signal generator that directly responds to gas pressure changes in the housing, eliminating the need for sensors and evaluation electronics while maintaining detection capability
Solution Approach 2:
The acoustic signal generator uses the gas pressure changes themselves as the driving force to produce the warning sound, making the system self-powered and eliminating the need for external power sources, control electronics, or additional detection devices
2Device complexity
If a purely mechanical acoustic signal generator is used, then device complexity is reduced, but detection precision may worsen
Solution Approach 1:
The invention employs a simple, inexpensive mechanical acoustic signal generator that does not require precise measurement capabilities, as the gas pressure changes in battery failure scenarios are sufficiently large to trigger reliable detection without sophisticated sensors
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 provides a simple and effective means to alert occupants of safety-critical states without additional technical complexity, ensuring timely warning and potentially preventing further damage or fire.
Implementation Method 1
a purely mechanical acoustic signal generator 22 which generates an acoustic warning signal upon the outflow of the gas
Data Source
AI summary
A vehicle has a high-voltage store, which is provided for storing electrical energy, wherein the high-voltage store has a high-voltage store housing, in which a plurality of electrical storage cells are arranged, and a device is provided in the high-voltage store housing through which the gas escaping from one or more of the storage cells into the interior of the high-voltage store housing can escape outwards from the high-voltage store housing into the environment. The device has a purely mechanical acoustic signal generator which is provided in order to generate an acoustic warning signal when gas flows through the device, wherein the warning signal is generated merely by the gas flowing through.