Battery Storage Pressure Relief Assembly for Thermal Runaway
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Solution Overview
Problem
Thermal runaway in batteries during transportation or management of multiple batteries poses a significant risk of explosion, necessitating improved reliability in energy storage devices.
Innovation Solution
The energy storage device incorporates a pressure relief assembly on its first wall, which includes a through hole covered by a pressure relief assembly, with an adapting part and support structure to manage internal pressure and temperature, enhancing sealing and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure relief assembly is added to the energy storage device, then the reliability is improved by preventing explosion, but the device complexity increases
Solution Approach 1:
The pressure relief assembly is designed as a separate, modular component that can be independently installed on the energy storage device. This segmentation allows the safety function to be added without redesigning the entire device structure, thus improving reliability while minimizing the increase in overall device complexity.
Solution Approach 2:
The pressure relief assembly acts as an intermediary component between the internal battery environment and the external atmosphere. It provides a controlled interface for pressure release, enabling safety functionality without requiring fundamental changes to the energy storage device's core structure.
2Reliability
If the pressure relief assembly is integrated into the first wall, then the sealing performance is improved, but the ease of manufacture decreases
Solution Approach 1:
The pressure relief assembly is designed as a separable component that interfaces with the first wall through standardized connection structures. This segmentation maintains sealing performance through dedicated sealing elements while enabling independent manufacturing and assembly of the pressure relief assembly and the energy storage device.
Solution Approach 2:
A sealing element acts as an intermediary between the pressure relief assembly and the first wall, ensuring effective sealing without requiring direct integration. This intermediary approach maintains high sealing performance while simplifying the manufacturing process by allowing separate production of the sealing component.
3Reliability
If the adapting part protrudes from the first wall, then the sealing performance is improved, but the volume of the energy storage device increases
Solution Approach 1:
The adapting part protrudes only at the specific location where the pressure relief assembly is installed, rather than extending the overall device volume. This localized protrusion concentrates the sealing enhancement function in a small area, improving sealing performance without significantly increasing the total volume of the energy storage device.
Solution Approach 2:
The adapting part utilizes the external surface dimension of the first wall to provide sealing enhancement. By protruding outward from the wall surface rather than expanding the internal volume, the design improves sealing performance while maintaining the compact internal space of the energy storage device.
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 pressure relief assembly effectively reduces the risk of explosion by promptly releasing internal pressure and temperature, improving the reliability and safety of the energy storage device.
Implementation Method 1
the pressure relief assembly is actuated to release the internal pressure
Implementation Method 2
the pressure relief assembly is actuated to release the internal pressure or reduce the internal temperature
Data Source
AI summary
Disclosed in embodiments of the present application is an energy storage device. The energy storage device is used for storing a plurality of batteries, and comprises: a first wall; and a pressure relief assembly arranged on the first wall. Therefore, according to the energy storage device of the embodiments, the reliability of the energy storage device can be improved.