Foldable Battery Puncture Lance for Electric Bus Fire Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electric bus fires are difficult to extinguish due to the high temperature and re-ignition risk of high-capacity batteries, and conventional methods like submerging the vehicle in water are impractical due to the size and weight of electric buses.
Innovation Solution
A foldable apparatus with a fire water tank, foldable frame, and fire water injection lance that unfolds and unfolds using hydraulic pressure to puncture the battery and inject extinguishing water directly into the battery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a crane is used to lift and submerge the electric bus in water, then the fire can be extinguished, but the method is impractical due to the weight and size of electric buses
Solution Approach 1:
The invention extracts the battery pack from the bus structure and targets it directly for water injection. The puncture injection lance specifically targets the battery pack to inject water directly into the prismatic cells, separating the fire suppression action from the entire bus structure and focusing only on the critical battery component.
Solution Approach 2:
The puncture injection lance serves as an intermediary device that bridges the water source and the battery pack. It punctures through the bus roof and battery housing to deliver water directly to the prismatic cells, acting as a mediator that enables direct cooling without requiring full bus submersion or complex crane operations.
2Reliability
If large amounts of fire extinguishing water are continuously injected for a long period, then the fire can be suppressed, but the response time is delayed and resources are consumed
Solution Approach 1:
The apparatus is pre-positioned at the rear of the bus with the puncture injection lance ready for immediate deployment. The system includes pre-attached hoses and a rapid deployment mechanism that allows the lance to be positioned and activated quickly upon fire detection, eliminating the need for time-consuming setup procedures.
Solution Approach 2:
The system rushes through the critical initial phase of fire suppression by directly puncturing the battery pack and injecting water immediately upon arrival. This bypasses the time-consuming process of conventional firefighting methods and delivers cooling water to the battery cells without delay, addressing the fire at its most critical stage.
3Productivity
If the apparatus has a fixed structure for rapid deployment, then fire suppression speed is improved, but transportation and storage become difficult
Solution Approach 1:
The apparatus employs a foldable frame structure that can dynamically transition between a compact folded state for transportation and storage, and an expanded deployed state for fire suppression operations. The foldable design allows the apparatus to be easily stored in the transport vehicle while maintaining the capability for rapid deployment when needed.
Solution Approach 2:
The apparatus features a nested structure where components are arranged to fit within each other when folded. The foldable frame and puncture injection lance are designed to nest compactly during transportation, similar to nested dolls, maximizing space efficiency in the transport vehicle while maintaining full functionality when deployed.
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 rapid and effective fire suppression by directly injecting water into the battery while maintaining contact with the electric bus, minimizing re-ignition risk and facilitating easy transportation and deployment.
Implementation Method 1
a foldable frame 120 configured to unfold or fold using hydraulic pressure
Implementation Method 2
the fire water injection lance 130 may puncture the battery placed on the roof of an electric bus by using the hydraulic pressure and inject the fire extinguishing water into the battery
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Proposed is an apparatus for extinguishing electric bus fires, including a fire water tank (110) provided in a transport vehicle, a foldable frame (120) configured to unfold or fold using hydraulic pressure, and a fire water injection lance (130) configured to puncture a battery placed on a roof of an electric bus and inject fire extinguishing water into the battery.