Battery Explosion-Proof Valve With Piercing Film Release
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Solution Overview
Problem
Existing battery explosion-proof valves often fail to inject fire-fighting medium quickly enough to extinguish fires in battery plug-in boxes, leading to delayed fire suppression and increased damage due to slow or blocked flow rates of the medium.
Innovation Solution
A battery explosion-proof valve with a fire-fighting medium pipeline, a housing, and a piercing assembly, where the piercing assembly is movable to pierce a protective film, allowing for immediate injection of the fire-fighting medium into the battery plug-in box, reducing response time and preventing further damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protective film is used to block the fire-fighting medium pipeline, then the fire-fighting medium can be contained before use, but the flow rate becomes slow or the medium cannot flow into the battery plug-in box when needed
Solution Approach 1:
The protective film is pre-installed on the medium outlet to block the fire-fighting medium pipeline before use, ensuring the medium is contained and ready for immediate deployment when thermal runaway occurs
Solution Approach 2:
The protective film is designed as a separate, removable component that can be quickly extracted or punctured by the piercing assembly, separating the containment function from the flow function to resolve the contradiction between reliable containment and rapid flow
2Device complexity
If the existing explosion-proof valve is used, then the structure is simple, but the response time is delayed and the fire cannot be extinguished at once
Solution Approach 1:
The piercing assembly is pre-positioned and the protective film is pre-installed, so that when thermal runaway occurs, the piercing assembly can immediately puncture the film and the fire-fighting medium can flow without delay, achieving rapid response while maintaining relatively simple structure
Solution Approach 2:
The protective film acts as an intermediary that can be quickly breached by the piercing assembly, enabling the transition from a sealed state to an active fire-fighting state without complex valve mechanisms, thus reducing response time
3Reliability
If the fire-fighting medium flow rate is slow, then the protective film provides good sealing, but the fire in the battery plug-in box cannot be extinguished in time
Solution Approach 1:
The protective film is designed as a separate component that can be quickly removed or punctured, separating the sealing function during storage from the rapid flow function during fire-fighting, allowing the system to achieve both good sealing and fast response
Solution Approach 2:
The piercing assembly is pre-positioned to immediately puncture the protective film when thermal runaway occurs, eliminating the delay between detecting the fire condition and initiating the fire-fighting medium flow, thus achieving rapid fire extinction while maintaining good sealing during storage
Data Source
AI summary
A battery explosion-proof valve, a battery plug-in box and an electric apparatus are provided. The battery explosion-proof valve includes a fire-fighting medium pipeline, a housing and a piercing assembly. The fire-fighting medium pipeline has a medium outlet and a protective film connected to the medium outlet to block a fire-fighting medium in the fire-fighting medium pipeline. The housing has a cavity, a first opening and a second opening. The first opening and the second opening are communicated with the cavity. The fire-fighting medium pipeline is fitted in the first opening. The cavity is configured to be communicated with an inner cavity of a battery plug-in box through the second opening. The piercing assembly is arranged in the cavity and is movable relative to the fire-fighting medium pipeline to pierce the protective film.