Battery Cell Firefighting Pipe Restraint for Pressure Relief Safety
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Solution Overview
Problem
The safety performance of batteries is compromised due to inadequate pressure relief mechanisms, leading to potential explosions and fires, necessitating enhanced safety features to manage internal pressure and temperature.
Innovation Solution
Incorporating a firefighting pipe with a pressure relief mechanism and a fixing member that includes restraint members to securely mount the pipe, allowing it to discharge a firefighting medium when internal pressure or temperature thresholds are reached, thereby cooling emissions and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure relief mechanism is provided in the battery cell, then internal pressure can be relieved when threshold is reached, but the battery remains vulnerable to fires and explosions without additional firefighting measures
Solution Approach 1:
A firefighting pipe is introduced as an intermediary component between the pressure relief mechanism and the external environment. When the pressure relief mechanism activates, it triggers the firefighting pipe to discharge firefighting medium, providing an additional layer of protection against fires and explosions caused by pressure buildup.
2Object-affected harmful factors
If a firefighting pipe is added to discharge firefighting medium, then fire and explosion protection is enhanced, but the pipe requires secure mounting to ensure stable operation
Solution Approach 1:
The mounting system is segmented into multiple restraint members distributed at different locations on the firefighting pipe. This segmentation allows each restraint member to independently contribute to the overall mounting stability, ensuring that the pipe remains securely positioned during operation while enabling the firefighting function.
3Reliability
If restraint members are provided on both the firefighting pipe and fixing member, then mounting stability is improved, but the structure becomes more complex
Solution Approach 1:
The restraint members are designed to be integrated with existing structural components of the battery assembly. By merging the restraint function with existing fixing members and structural elements, the mounting stability is enhanced without proportionally increasing the overall device complexity.
4Reliability
If the firefighting pipe is securely restricted in multiple directions, then stable positioning is achieved, but the pipe's responsiveness to pressure relief activation may be affected
Solution Approach 1:
The restraint members are designed with dynamic characteristics that allow them to maintain secure positioning under normal conditions while permitting rapid movement when activated by pressure relief. The restraint structure can transition from a constrained state to a released state, ensuring both positioning stability and rapid response capability.
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 effectively stabilizes the firefighting pipe's mounting, ensuring reliable discharge of the firefighting medium to cool emissions and regulate temperature, significantly enhancing battery safety performance.
Implementation Method 1
the firefighting medium can be discharged when the pressure relief mechanism of the battery cell is actuated, to cool the emissions of the battery cell and even the interior of the battery cell
Data Source
AI summary
Provided are a battery, an electric apparatus, and a method and an apparatus for manufacturing battery, so as to enhance safety performance of the battery. The battery includes: a battery cell, where a first wall of the battery cell is provided with a pressure relief mechanism; a firefighting pipe configured to accommodate a firefighting medium and discharge the firefighting medium when the pressure relief mechanism is actuated; and a fixing member disposed between the first wall and the firefighting pipe. The firefighting pipe includes a first restraint member, and the fixing member includes a second restraint member, where the two restraint members fit with each other to restrict the firefighting pipe in a first direction and a second direction, the first direction is perpendicular to the first wall, and the second direction is parallel to the first wall and perpendicular to an extending direction of the firefighting pipe.