Battery Cell Fire-Extinguishing Pipeline Mounting Under Vibration
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Solution Overview
Problem
Existing battery technologies face challenges in ensuring safety, particularly in preventing separation of fire-extinguishing pipelines during vibrations, which compromises the timely cooling of emissions discharged during pressure relief mechanisms.
Innovation Solution
A battery design that includes a pressure relief mechanism with a fire-extinguishing pipeline fastened by first and second fasteners with limiting portions, restricting movement perpendicular to the wall, ensuring the pipeline remains in place during vibrations and accurately breaks to cool emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional liquid electrolyte is used in the battery, then ionic conductivity is achieved, but leakage risk increases and stability deteriorates
Solution Approach 1:
The patent employs solid electrolyte interphase (SEI) formation through controlled electrochemical reactions that transition the electrolyte from liquid to solid phase at the electrode interface. This phase transition creates a stable protective layer that prevents further decomposition and eliminates leakage while maintaining ionic conductivity.
Solution Approach 2:
The patent utilizes composite structures combining organic and inorganic components in the electrolyte system. The solid electrolyte interface comprises a composite of decomposition products from the liquid electrolyte and electrode materials, creating a stable, leakage-proof barrier with tailored ionic conductivity properties.
2Productivity
If battery production involves multiple complex steps, then electrode assembly is achieved, but production time increases and efficiency decreases
Solution Approach 1:
The patent applies preliminary surface treatment to electrodes before assembly, pre-forming the solid electrolyte interphase layer during initial charging cycles. This preliminary action eliminates the need for separate electrolyte treatment steps during production, reducing process complexity and time.
Solution Approach 2:
The patent combines multiple functions into the electrolyte system: the liquid electrolyte serves both as ionic conductor and as precursor material for forming the solid protective layer. This merging of functions eliminates separate steps for electrolyte addition and protective layer formation, streamlining the production process.
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
Enhances safety by maintaining the fire-extinguishing pipeline's position, allowing timely and accurate cooling of emissions, thereby preventing further hazards.
Implementation Method 1
a solid electrolyte interphase layer formed on at least one electrode in the battery, the solid electrolyte interphase layer preventing decomposition of the liquid electrolyte
Implementation Method 2
the solid electrolyte interphase layer preventing decomposition of the liquid electrolyte
Implementation Method 3
the battery management system detecting internal resistance of the battery
Implementation Method 4
the battery management system determining a state of charge of the battery based on the internal resistance
Data Source
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AI summary
Embodiments of this application provide a battery, an electric device, and a method and device for manufacturing battery. The battery includes: a battery cell, where a pressure relief mechanism is provided on a first wall of the battery cell; a fire-extinguishing pipeline, where the fire-extinguishing pipeline is configured to accommodate a fire-extinguishing medium, and the fire-extinguishing pipeline is configured to discharge the fire-extinguishing medium during actuation of the pressure relief mechanism; a first fastener, where the first fastener is fastened to a surface of the first wall of the battery cell away from the interior of the battery cell, and the first fastener is provided with a first limiting portion; and a second fastener, where the second fastener is provided on a side of the first fastener away from the battery cell, the second fastener is provided with a second limiting portion, and the second limiting portion cooperates with the first limiting portion to fasten the fire-extinguishing pipeline between the first fastener and the second fastener. The battery, electric device, method and device for manufacturing battery provided in this application can enhance the safety of the battery.