Battery Housing Degassing Unit With Detachable Membrane Carrier
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Solution Overview
Problem
Existing degassing units for battery housings are inflexible and require large main bodies for welding, limiting their adaptability to different technical specifications and making it difficult to exchange membranes quickly in case of defects.
Innovation Solution
A degassing unit with a membrane fastened to a separate membrane carrier, which is connected to the main body via a reversibly detachable fastening device, allowing for modular adaptation to various specifications and easy membrane exchange without affecting the main body's design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the membrane is welded directly to the main body, then the connection is fluid-tight and stable, but the main body must be dimensioned very large to accommodate welding tools and the connection becomes inflexible for different specifications
Solution Approach 1:
The degassing unit is divided into separate components: a membrane carrier that holds the membrane and a separate main body. The membrane carrier can be detached and replaced independently, allowing different membrane specifications to be used with the same main body, thus improving adaptability while maintaining reliable fluid-tight connections through the modular interface
Solution Approach 2:
A membrane carrier acts as an intermediary component between the membrane and the main body. This carrier can be quickly attached and detached from the main body, enabling easy membrane exchange without affecting the main body's design and allowing rapid adaptation to different technical specifications
2Reliability
If the membrane is welded directly to the main body, then the connection is stable, but the main body must be dimensioned very large for welding tool access
Solution Approach 1:
By separating the membrane mounting function into a distinct membrane carrier component, the main body can be minimized in size. The membrane carrier handles the membrane attachment and sealing functions, allowing the main body to be compact without compromising connection stability or welding accessibility
3Ease of manufacture
If the membrane is preassembled with a mounting frame, then handling is improved and welding is facilitated, but the device complexity increases
Solution Approach 1:
The membrane carrier is designed as a separate, standardized component that can be preassembled with the membrane in a controlled manufacturing environment. This preassembled unit simplifies handling during final assembly and facilitates welding, while the modular nature actually reduces overall device complexity by creating reusable, interchangeable components
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
Enables quick and cost-effective adaptation to different technical specifications and facilitates easy replacement of membranes, reducing manufacturing complexity and enabling efficient pressure compensation while maintaining the main body's design integrity.
Implementation Method 1
a gas passage opening which is covered by a semipermeable membrane which is permeable for gases but impermeable for liquids
Implementation Method 2
at least one fluid-permeable membrane support device spanning across the inner side of the membrane
Data Source
AI summary
A degassing unit for a battery housing is connectable fluid-tightly to a rim of a pressure compensation opening of the battery housing. The degassing unit has a main body provided with a gas passage opening and a fastening region for attachment of the degassing unit at the battery housing. A membrane covers the gas passage opening. A fluid-permeable membrane support device spans the membrane at an inner side of the membrane. A membrane carrier separate from the main body is connected by a reversibly detachable fastening device to the main body such that a movement of membrane carrier and main body relative to each other is blocked at least axially. The membrane carrier is sealed around the gas passage opening circumferentially fluid-tightly relative to the main body. The membrane is fastened by material fusion to the membrane carrier. A battery housing with such a degassing unit is provided.