Battery Fire Sensor Conductor for Early EV Fire Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fire protection systems for electric and hybrid vehicles struggle to reliably detect battery fires at an early stage, often failing to provide sufficient warning before the fire spreads.
Innovation Solution
A fire protection device equipped with a monitoring current conductor that is arranged on battery components or modules, designed to be interrupted by fire-induced destruction, triggering the monitoring system to detect fires promptly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fire detection systems are used, then the system structure is simple, but the fire detection reliability and early detection capability are insufficient
Solution Approach 1:
The monitoring current conductor serves dual functions: it provides electrical current for battery operation and simultaneously acts as a fire detection sensor. When fire occurs, the conductor is destroyed and interrupts the circuit, triggering the monitoring system. This multi-functionality improves fire detection reliability without adding separate complex sensing systems.
Solution Approach 2:
The fire detection system utilizes the battery's existing current conductors rather than requiring separate sensing elements. The conductor itself becomes the sensor through its fire-induced destruction, eliminating the need for additional dedicated fire sensing components and reducing overall system complexity.
2Measurement precision
If the monitoring current conductor is arranged on battery components, then the fire detection coverage is improved, but the manufacturing complexity increases
Solution Approach 1:
The monitoring current conductor is integrated directly into the battery module structure, combining the electrical current path with the fire detection sensing function. This merging eliminates separate sensing components and simplifies manufacturing by using existing structural elements for dual purposes.
Solution Approach 2:
The system detects fire through changes in the electrical conductivity parameter of the monitoring current conductor. When fire occurs, the conductor is destroyed and its conductivity changes from conductive to non-conductive, triggering the monitoring system. This parameter-based detection provides precise fire detection while maintaining manufacturing simplicity.
3Area of stationary object
If the monitoring current conductor extends over large areas, then the detection range is improved, but the material consumption and cost increase
Solution Approach 1:
The monitoring current conductor performs dual functions: providing electrical current for battery operation and serving as a fire detection sensor across extended areas. By using the same conductor for both purposes, the system achieves wide detection coverage without requiring additional sensing materials.
Solution Approach 2:
The battery's existing current conductors are utilized as fire sensors throughout the battery structure. These conductors naturally extend over large areas to provide electrical connectivity, and simultaneously provide fire detection coverage across the same areas, eliminating the need for separate extensive sensing networks.
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 reliable and early detection of battery fires, providing at least five minutes' warning to the driver before the fire spreads to the vehicle, thus ensuring timely intervention.
Implementation Method 1
The monitoring current conductor is configured to be interrupted by fire-induced destruction in the event of a fire that is to be detected
Data Source
AI summary
A fire protection device (1) is provided for an at least partially electrically operated motor vehicle for detecting a fire caused by a battery device (2) of the vehicle. The fire protection device (1) includes a fire sensor (4) that is connected operatively to a monitoring system (3). The fire sensor (4) has a monitoring current conductor (14) that is suitable and configured for being interrupted by fire-induced destruction in the event of a fire. The monitoring system (3) is suitable and configured for detecting the fire by the interrupted monitoring current conductor (14).