Battery Cell Pressure Relief Venting Toward Thermal Management
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Solution Overview
Problem
Existing battery technologies face safety challenges due to the uncontrolled discharge of high-pressure and high-temperature emissions, which can lead to further safety hazards and accidents.
Innovation Solution
A battery design incorporating a pressure relief mechanism with a support structure that allows controlled discharge of emissions at a predetermined angle towards a thermal management component, enhancing safety by directing emissions for effective cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure relief mechanism is provided without directional control, then emissions can be discharged, but the discharge direction is uncontrolled causing safety hazards
Solution Approach 1:
The pressure relief mechanism employs asymmetric structural design where the support is positioned at a specific location and angle relative to the pressure relief hole, creating a predetermined discharge direction. This asymmetric arrangement ensures emissions are directed toward the thermal management component rather than randomly dispersing, thus improving safety while controlling the harmful discharge path.
Solution Approach 2:
The support acts as an intermediary element between the pressure relief mechanism and the thermal management component. It guides and directs the emissions flow from the pressure relief hole toward the thermal management component, serving as a mediator that controls the discharge path and ensures safe directional release of pressure.
2Temperature
If emissions are discharged directly without directional guidance, then pressure relief is achieved, but thermal management effectiveness is reduced
Solution Approach 1:
The support serves as an intermediary that channels emissions directly toward the thermal management component, ensuring effective thermal contact. This intermediary structure guarantees that hot emissions are properly directed to the cooling system, maintaining thermal management effectiveness while achieving pressure relief.
Solution Approach 2:
The support is pre-positioned and pre-oriented at a predetermined angle before pressure buildup occurs. This preliminary structural arrangement ensures that when pressure relief is activated, emissions are immediately and correctly directed toward the thermal management component, preventing uncontrolled thermal dispersion.
3Stress or pressure
If the pressure relief mechanism is fully opened without support, then maximum pressure relief is achieved, but the mechanism loses structural control
Solution Approach 1:
The support provides a counterbalancing structural element that opposes complete opening of the pressure relief mechanism. It acts as a mechanical counterweight or constraint that prevents total collapse or full opening, maintaining structural stability while still allowing sufficient pressure relief through the controlled opening and predetermined angle formation.
Solution Approach 2:
The support creates a dynamic equilibrium in the pressure relief mechanism, allowing controlled movement and opening to a predetermined angle rather than complete collapse. This dynamic structure enables the mechanism to respond to pressure changes while maintaining structural integrity and stability throughout the pressure relief 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
The solution provides a controlled and directed discharge of emissions, reducing the risk of further thermal runaway and improving overall battery safety by utilizing a thermal management component for efficient cooling.
Implementation Method 1
the emissions from the battery cell can contact the thermal management component, thereby the thermal management component can cool the emissions from the battery cell
Data Source
AI summary
Embodiments of the present application provides a battery, a power consumption apparatus, a method and an apparatus for producing the battery. The battery includes: a battery cell, the battery cell including a pressure relief mechanism, the pressure relief mechanism being disposed on a first wall of the battery cell; a first surface of the thermal management component being attached to the first wall; and a support, the support being arranged opposite to the pressure relief mechanism, the support being configured to support the pressure relief mechanism when the pressure relief mechanism is actuated, so that the pressure relief mechanism is opened at a predetermined angle, therefore emissions from the battery cell can be discharged toward the thermal management component. The technical solutions of embodiments of the present application can enhance safety of batteries.