Pressure-Relief Hatch Structure for Reusable ESS Containers
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Solution Overview
Problem
Energy storage system containers are prone to damage due to increased pressure from gases generated during events like fires or explosions, rendering them unusable.
Innovation Solution
A container design featuring a hatch that opens when internal pressure exceeds external pressure, connected by a mechanism allowing gas discharge and including a link part with a hinge pin and leaf spring to manage rotational movement, preventing damage and enabling reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the container is sealed to prevent gas leakage, then the container maintains structural integrity, but the container cannot discharge gas and is damaged by pressure buildup
Solution Approach 1:
The container is segmented into a sealed container body and a separate hatch component. The hatch acts as a movable segmentation that can separate from the container body when pressure increases, allowing gas discharge while maintaining the integrity of the main container structure.
Solution Approach 2:
The connecting part with link rods and hinge pin acts as an intermediary mechanism between the container body and hatch. This intermediary structure transmits pressure forces and enables controlled hatch opening without directly compromising the container body integrity.
2Adaptability or versatility
If the container is designed to discharge gas through an opening, then the container can be reused after gas discharge, but the connecting part may be damaged during the opening process
Solution Approach 1:
The leaf spring is pre-installed in the connecting part to provide cushioning protection. When the hatch opens under pressure, the leaf spring absorbs shock and reduces stress on the connecting part, preventing damage and enabling container reuse.
Solution Approach 2:
The connecting part design changes the mechanical parameters of force transmission through the link rods and hinge pin mechanism. This transforms the direct linear force into a rotational movement with reduced stress concentration, protecting the connecting part from damage.
3Object-affected harmful factors
If the hatch is designed to open automatically under pressure, then gas can be discharged safely, but the hatch may open unintentionally under normal pressure variations
Solution Approach 1:
The connecting part with link rods and hinge pin changes the pressure threshold parameter for hatch opening. The mechanical advantage provided by the link mechanism requires a higher pressure differential to activate, ensuring the hatch only opens under significant pressure conditions rather than normal pressure variations.
Solution Approach 2:
The connecting part acts as an intermediary that filters pressure signals before transmitting them to the hatch. It distinguishes between normal pressure variations and critical pressure buildup, only activating the hatch when the pressure exceeds the designed threshold.
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
Prevents container damage by safely discharging gases, reducing the risk of explosions, and allowing the system to be reused, thus lowering maintenance and operation costs.
Implementation Method 1
a hatch that is configured to close the opening and move in a direction to open the opening when the pressure in the internal space is greater than a pressure outside the container body
Implementation Method 2
a link part having a first side connected to the first connecting body and a second side connected to the second connecting body
Data Source
AI summary
A container and an energy storage system including the container is to provided such that the container is not damaged by gas collected in the container when an event such as a fire or explosion occurs in the container and such that the container can be reused by discharging the gas to outside of the container. The container includes a container body providing an internal space and an opening through which gas can be discharged out of the internal space to outside of the container, a hatch that is configured to close the opening and move in a direction to open the opening when the pressure in the internal space is greater than the pressure outside the container body, and a connecting part that connects the container body and the hatch.