Ion Filter Segmented Housing for Fuel Cell Cooling Water Management
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Solution Overview
Problem
The conventional ion filter in fuel cell systems faces limitations in design due to water head constraints, leading to excessive cooling water loss or air bubble collection, and increased weight and cost when trying to maintain electrical insulation stability.
Innovation Solution
An ion filter design with inlet and outlet communication elements that can block fluid flow during cartridge replacement, allowing for easier maintenance and increased design freedom by minimizing water head limitations, featuring a filter housing with a detachable lid and ball joint mechanism for fluid management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the upper portion of the ion filter housing is disposed to align with the uppermost line of the TMS, then electrical insulation stability is maintained, but the mounting bracket length must be significantly increased, leading to increased weight and cost
Solution Approach 1:
The ion filter housing is divided into an upper housing and a lower housing that can be separately assembled. This segmentation allows the filter to be positioned at a lower location without requiring a long mounting bracket, thereby reducing vehicle weight while maintaining electrical insulation stability through the sealed connection between upper and lower housings.
Solution Approach 2:
The filter element is configured to extend in the vertical direction rather than requiring horizontal extension through a long mounting bracket. By changing the orientation and dimension of filtration, the system achieves the required filtration function at a more favorable position, reducing the need for extended mounting structures.
2Ease of operation
If the upper portion of the ion filter housing is disposed below the uppermost line of the cooling water line, then installation is easier, but excessive cooling water is lost during cartridge replacement
Solution Approach 1:
The flow blocking element is pre-configured within the lower housing to automatically block the cooling water flow path when the filter cartridge is removed. This preliminary arrangement of blocking capability prevents cooling water loss during cartridge replacement while allowing the filter to be installed at a lower, more accessible position.
Solution Approach 2:
The flow blocking element acts as an intermediary component between the cooling water flow and the filter cartridge removal process. It mediates the conflict between easy installation and water loss prevention by providing a mechanical blocking function that activates when the cartridge is removed, preventing direct water loss.
3Reliability
If the upper portion of the ion filter housing is disposed above the uppermost end of the cooling water line, then air bubble collection is prevented, but the design flexibility and degree of freedom in TMS design is reduced
Solution Approach 1:
The system transitions from a static positioning requirement to a dynamic solution where the flow blocking element can be activated or deactivated based on operational needs. This dynamic capability allows the filter to be positioned flexibly in the TMS design while maintaining cooling water flow stability through controlled blocking of the flow path during maintenance operations.
4Reliability
If a long mounting bracket is used to position the ion filter housing at the required level, then electrical insulation stability is maintained, but device complexity and cost increase
Solution Approach 1:
The ion filter housing is segmented into upper and lower portions that can be assembled at a more favorable position. This segmentation eliminates the need for a complex, extended mounting bracket structure while maintaining the required electrical insulation stability through the sealed connection between segments and the filter element configuration.
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
This design minimizes cooling water loss during filter replacement, enhances design flexibility, and reduces overall weight and cost by eliminating water head constraints, while maintaining electrical insulation stability.
Implementation Method 1
an inlet communication element provided on an inlet portion of the filter housing and configured to selectively block a flow of fluid introduced into the filter housing from the flow path
Implementation Method 2
An ion filter cartridge filled with an ion exchange resin is installed in an ion filter housing
Data Source
AI summary
An ion filter installed in a cooling water circulation line of a fuel cell system of a vehicle includes a filter housing disposed on a flow path through which a fluid flows, a filtering element accommodated in the filter housing and configured to filter the fluid introduced into the filter housing, and an inlet communication element provided on an inlet portion of the filter housing and configured to selectively block a flow of fluid introduced into the filter housing from the flow path when the filter housing detached from the flow path.