Battery Temperature Change Detection for Fire Response
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Solution Overview
Problem
Conventional electric vehicles face risks of rapid and uncontrolled battery fires due to lithium-ion technology, with existing safety measures primarily focused on prevention and simple warning systems, lacking effective early detection and response mechanisms.
Innovation Solution
A method involving continuous battery temperature monitoring by multiple sensors to detect rapid temperature changes, triggering protective and warning measures such as automatic window closure, warning signals, and safety mode activation to address fire-critical states before they escalate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional temperature monitoring with simple warning functions is used, then device complexity is reduced, but response time to fire-critical states is delayed
Solution Approach 1:
The system performs preliminary actions by continuously monitoring temperature trends and calculating temperature changes before a fire-critical state occurs. The control unit computes temperature changes between measurement points and compares them against thresholds in advance, enabling early detection and activation of protective measures before the battery reaches a dangerous state.
Solution Approach 2:
The system implements feedback by continuously measuring battery temperature, calculating temperature changes, and using this information to activate protective measures when thresholds are exceeded. The control unit receives temperature data from sensors, processes the information through temperature change calculations, and provides feedback by triggering warnings or protective actions based on the analyzed temperature trends.
2Reliability
If simple warning functions are implemented, then ease of operation is improved, but reliability of fire detection is reduced
Solution Approach 1:
The system replaces simple mechanical warning functions with an automated electronic monitoring and control system. The control unit automatically calculates temperature changes, compares them against predefined thresholds, and triggers protective measures without requiring manual intervention, thereby improving reliability while maintaining ease of operation through automation.
Solution Approach 2:
The monitoring system performs self-service by automatically detecting temperature changes, evaluating fire-critical states, and activating protective measures without external intervention. The control unit independently processes temperature data, determines when thresholds are exceeded, and executes appropriate responses, making the system self-sufficient and reliable.
3Measurement precision
If continuous temperature monitoring with temperature change analysis is implemented, then measurement precision is improved, but use of energy increases
Solution Approach 1:
The system implements periodic action by continuously measuring temperature at defined measurement points and calculating temperature changes between these periodic measurements. This approach provides precise detection of temperature trends while managing energy consumption through structured, periodic monitoring rather than constant high-frequency sampling.
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 early and reliable detection of potential battery fires, allowing for prompt protective measures to reduce risk to occupants and prevent smoke ingress, thereby enhancing safety and response times in fire-critical situations.
Implementation Method 1
a battery temperature is continuously detected by at least one temperature sensor
Data Source
AI summary
A method for responding to a fire-critical battery state in a motor vehicle having at least one battery, and a motor vehicle designed to carry out such a method. A battery temperature of the at least one battery of the motor vehicle is continuously detected by at least one temperature sensor. The method includes the following steps: Continuous detection of a temperature change in the battery based on the continuously detected battery temperature; verifying whether the detected temperature change exceeds a specified threshold defining a fire-critical battery state; and activating at least one vehicle function in order to perform a protective and/or warning measure by a control unit, if the fire-critical battery state is reached.