Integrated Leak Testing and Aerosol Detection for Vehicle Components
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Solution Overview
Problem
Existing leak testing methods for vehicle components, particularly battery housings, are time-consuming and prone to user error due to the use of separate devices for pressure testing and leak detection, increasing the risk of incorrect application.
Innovation Solution
A combined leak testing device with integrated pneumatic and aerosol generation capabilities, featuring a housing with test inlets and outlets, a pneumatic unit, aerosol generator, and control unit, allowing for simultaneous pressure testing and leak detection using a single device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate devices are used for pressure testing and leak detection, then each device can be optimized for its specific function, but the testing process becomes time-consuming and increases the risk of user error
Solution Approach 1:
The patent combines the pneumatic unit for pressure testing and the aerosol generator for leak detection into a single integrated device with a common housing. This merging eliminates the need to connect separate devices to the component, reducing testing time and the risk of incorrect device application while maintaining all necessary testing functions
Solution Approach 2:
The integrated device performs multiple functions: pressure testing through the pneumatic unit and leak detection through the aerosol generator. The control unit coordinates both functions, allowing a single device to replace multiple specialized devices and enable sequential or integrated testing operations
2Reliability
If separate devices are used for pressure testing and leak detection, then device specialization is maintained, but the complexity of operation increases and user error risk rises
Solution Approach 1:
By integrating both testing functions into one device with a unified control interface, the system reduces operational complexity. The user interacts with a single device and control unit rather than coordinating multiple separate devices, minimizing the risk of incorrect device application and simplifying the testing procedure
3Productivity
If the aerosol generator is integrated into the same housing as the pneumatic unit, then device compactness and operational efficiency improve, but thermal management becomes challenging due to heat generation
Solution Approach 1:
The housing is divided into thermally isolated zones: a first region housing the pneumatic unit and a second region housing the aerosol generator. Thermal insulation elements are positioned between these regions to prevent heat transfer, allowing both functions to operate in close proximity without thermal interference
Solution Approach 2:
Thermal insulation elements act as intermediary structures between the pneumatic unit and aerosol generator. These insulators block heat transfer pathways, enabling the aerosol generator to operate at elevated temperatures without affecting the pneumatic unit or surrounding components
4Reliability
If thermal insulation is added to protect temperature-sensitive components, then component reliability is maintained, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The housing is segmented into thermally isolated regions with insulation elements positioned at specific locations. This modular approach to thermal management allows for standardized manufacturing processes and simplifies assembly compared to a completely redesigned housing structure
Solution Approach 2:
Thermal insulation is applied locally at critical interfaces between the pneumatic unit and aerosol generator rather than throughout the entire housing. This targeted approach provides necessary thermal protection while minimizing additional material usage and manufacturing complexity
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
Reduces testing time and minimizes user error by integrating pressure testing and leak detection functions, enhancing flexibility and reliability through passive cooling and thermal insulation of temperature-sensitive components.
Implementation Method 1
aerosol generator which is designed to generate aerosol
Implementation Method 2
the pneumatic unit is designed to direct the medium with the first pressure into the aerosol generator in order to convey the aerosol generated in the aerosol generator into a component
Implementation Method 3
a control unit which is designed to control the pneumatic unit in order to change a pressure of a medium present at the at least one test inlet to a predetermined first pressure
Data Source
AI summary
In order to improve the checking of test volumes of components, in particular vehicle components, with a leak testing device and to simplify the process and application of the leak test and the leak detection, the leak testing device comprises a housing which has at least one test inlet, at least one test outlet and an aerosol outlet, wherein at least the following are arranged in the housing: a pneumatic unit which is connected to the at least one test inlet and the at least one test outlet, a control unit which is designed to control the pneumatic unit in order to change a pressure of a medium present at the at least one test inlet to a predetermined first pressure during operation of the leak testing device and to provide and monitor the medium with the first pressure at the test outlet for checking a component connected to the test outlet for leak-tightness, and an aerosol generator which is designed to generate aerosol, wherein the aerosol generator is connected to the pneumatic unit and the aerosol generator is connected to the aerosol outlet, wherein, for leak detection, the pneumatic unit is designed to direct the medium with the first pressure into the aerosol generator in order to convey the aerosol generated in the aerosol generator into a component connected to the aerosol outlet of the housing.