Battery Cell Vent Fire-Fighting Pipeline Fixing for Thermal Runaway
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Solution Overview
Problem
The safety of batteries in electric vehicles is a critical concern due to potential thermal runaway and explosion risks, which existing technologies have not adequately addressed.
Innovation Solution
A battery design that incorporates a pressure relief mechanism and a fire-fighting pipeline, where the fire-fighting pipeline is securely fixed between first and second fixing members to ensure accurate and timely damage when the pressure relief mechanism is actuated, thereby cooling the emissions and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fire-fighting pipeline is fixed using conventional methods, then the pipeline can be installed, but it may detach during battery vibration, causing delayed cooling response
Solution Approach 1:
The fixing mechanism is divided into two separate fixing members: a first fixing member that fixes the fire-fighting pipeline to the first wall, and a second fixing member that provides additional constraint. This segmentation ensures the pipeline remains positioned during vibration while maintaining moderate overall complexity through modular design.
Solution Approach 2:
The fire-fighting pipeline is pre-fixed to the first wall using the first fixing member before the battery undergoes vibration or thermal events. This preliminary fixation ensures the pipeline maintains accurate positioning relative to the pressure relief mechanism outlet, guaranteeing immediate cooling response when needed without requiring complex real-time adjustment mechanisms.
2Speed
If the fire-fighting pipeline is positioned closer to the pressure relief mechanism for faster response, then cooling effectiveness improves, but the risk of premature damage or interference increases
Solution Approach 1:
The fire-fighting pipeline is positioned close to the pressure relief mechanism outlet specifically at the emission discharge location to maximize cooling effectiveness. The first fixing member anchors the pipeline at this critical location, while the second fixing member provides additional structural support. This localized proximity arrangement achieves fast cooling response without compromising overall pipeline stability.
3Ease of manufacture
If a simple fixing method is used for the fire-fighting pipeline, then manufacturing complexity is reduced, but the pipeline may detach during battery operation
Solution Approach 1:
The fixing system is segmented into two independent fixing members with distinct functions: the first fixing member provides primary attachment to the first wall, and the second fixing member provides additional constraint. This segmentation allows each component to be manufactured and installed relatively simply while collectively achieving high reliability through distributed fixation points.
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 proposed solution effectively reduces the risk of thermal runaway by ensuring the fire-fighting pipeline is accurately damaged to cool the emissions, thereby enhancing the safety performance of the battery.
Implementation Method 1
a pressure relief mechanism, and the pressure relief mechanism being configured to be actuated when an internal pressure or temperature of the battery cell reaches a threshold, to relieve the internal pressure
Implementation Method 2
the fire-fighting pipeline can be damaged smoothly and accurately to lower the temperature of emissions discharged through the pressure relief mechanism in time
Data Source
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AI summary
Embodiments of the present application provide a battery, a power consumption device, and a method and device for producing a battery. The battery includes: a battery cell, a first wall of the battery cell being provided with a pressure relief mechanism, and the pressure relief mechanism being configured to be actuated when an internal pressure or temperature of the battery cell reaches a threshold, to relieve the internal pressure; a fire-fighting pipeline configured to accommodate a fire-fighting medium and the fire-fighting pipeline being configured to discharge the fire-fighting medium when the pressure relief mechanism is actuated; a first fixing member, disposed on a side of the fire-fighting pipeline close to the first wall, the first fixing member being provided with a first limiting part and a second limiting part; and a second fixing member, disposed on a side of the fire-fighting pipeline away from the first wall, the second fixing member being provided with a third limiting part and a fourth limiting part, the third limiting part and the first limiting part being matched with each other to fix the fire-fighting pipeline between the first fixing member and the second fixing member, the fourth limiting part and the second limiting part being matched with each other to limit the second fixing member in a first direction, and the first direction being parallel to an extending direction of the fire-fighting pipeline. The battery, the power consumption device, and the method and device for producing the battery provided in the present application could improve safety performance of the battery.