Explosion-Proof Enclosure Venting With Two-Stage Pressure Relief
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Solution Overview
Problem
Existing explosion-proof pressure relief structures for energy storage devices are complex, difficult to assemble, and prone to failure due to material limitations and machining challenges, especially with harder alloys like carbon steel and stainless steel.
Innovation Solution
An explosion-proof enclosure with a loop-shaped pressure relief portion that cracks and splits from the housing body when internal pressure reaches a set value, allowing for quick gas release through a through hole, using materials like glass or ceramic for the pressure relief portion and conductive materials for the housing body, which can be designed for specific pressure relief requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If diaphragm type explosion-proof pressure relief structures are used, then pressure relief function is achieved, but device complexity and assembly difficulty increase due to protection mechanisms, clamping or riveting mechanisms, and piercing mechanisms
Solution Approach 1:
The invention extracts the pressure relief function from the complex diaphragm structure and integrates it directly into the housing wall through a simplified explosion-proof structure. The housing wall itself becomes the pressure relief component, eliminating the need for separate diaphragms, clamping mechanisms, and piercing mechanisms, thereby reducing device complexity while maintaining pressure relief reliability
Solution Approach 2:
The invention merges the housing wall with the explosion-proof pressure relief function by forming the explosion-proof structure as an integral part of the housing wall. This combination eliminates the need for separate protection mechanisms and assembly components, simplifying both the structure and assembly process while ensuring reliable pressure relief
2Reliability
If diaphragm type explosion-proof pressure relief structures are used, then pressure relief function is achieved, but the device height increases and occupies more space
Solution Approach 1:
By merging the explosion-proof structure with the housing wall, the invention eliminates the need for separate diaphragm assemblies that would increase device height. The pressure relief function is achieved within the existing housing thickness, maintaining a compact form factor
3Reliability
If engraved explosion-proof pressure relief structure is used, then pressure relief function is achieved, but manufacturing precision requirements increase due to demanding machining accuracy of the notch groove
Solution Approach 1:
The invention changes the material parameter by using thermoplastic or thermosetting resin materials for the housing wall, which can be formed through molding processes rather than precision machining. This allows the explosion-proof structure to be created with standard manufacturing tolerances, significantly reducing manufacturing precision requirements while maintaining reliable pressure relief function
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 simple, space-efficient, and reliable pressure relief mechanism with high accuracy, reducing the risk of device failure and enabling safer operation by quickly releasing pressure when internal gas pressure exceeds set values.
Implementation Method 1
the pressure relief portion is configured to crack and split from the housing body in response to deformation of the housing body when a pressure intensity in the housing body reaches a first set value
Data Source
AI summary
The present disclosure discloses an explosion-proof enclosure for an energy storage device and an energy storage device. The explosion-proof enclosure includes: a housing body, having a through hole; and an explosion-proof element, including a central portion and a pressure relief portion provided around the central portion, wherein the pressure relief portion is loop-shaped, the pressure relief portion is provided in the through hole and is in sealed connection with the through hole, the pressure relief portion is configured to crack and split from the housing body in response to the deformation of the housing body when the pressure intensity in the housing body reaches a first set value, and to detach from the housing body when the pressure intensity reaches a second set value, wherein the second set value is greater than the first set value.