Fuel Cell Ion Filter Valve Assembly for Low-Loss Cartridge Replacement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing ion filters in fuel cell systems face challenges in maintaining electrical insulation stability, require frequent cartridge replacements, and result in excessive coolant loss or air bubble collection due to restrictive mounting bracket lengths, increasing vehicle weight and cost.
Innovation Solution
An ion filter design with a modular housing and valve assembly, featuring a rotatable gate member and valve assembly that allows for easy replacement of the filter element while minimizing coolant loss, and integrates an air vent function without additional components, enabling flexible configuration and improved maintainability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mounting bracket length is increased to position the ion filter housing at the uppermost end of the TMS, then coolant leakage is minimized during cartridge replacement, but the overall weight and cost of the vehicle increase
Solution Approach 1:
The ion filter housing is designed with a rotatable gate member that can dynamically adjust the housing's position and orientation. This allows the housing to be positioned at the uppermost end of the TMS only when needed for cartridge replacement, while allowing more flexible positioning during normal operation, thereby eliminating the need for an excessively long mounting bracket and reducing vehicle weight.
Solution Approach 2:
The ion filter housing is divided into separable components including the gate member, valve assembly, and filter cartridge. This segmentation allows the cartridge to be replaced independently without requiring the entire housing to be positioned at the uppermost end continuously, enabling shorter mounting brackets and reduced vehicle weight while maintaining coolant leakage prevention during maintenance operations.
2Loss of substance
If the ion filter housing is positioned at the uppermost end of the TMS to prevent coolant leakage, then coolant loss is minimized, but air bubbles are collected in the ion filter and coolant flow is reduced
Solution Approach 1:
The rotatable gate member enables dynamic positioning of the ion filter housing, allowing the operator to adjust the housing orientation to prevent coolant leakage during cartridge replacement while maintaining optimal coolant flow during normal operation. The gate can be rotated to specific angles that balance between preventing coolant loss and avoiding air bubble accumulation.
Solution Approach 2:
The gate member can be adjusted to change the orientation angle and position parameters of the ion filter housing. By modifying these geometric parameters, the system prevents coolant leakage during maintenance while avoiding the extreme positioning that would cause air bubble collection and reduced coolant flow during operation.
3Weight of moving object
If the ion filter housing is positioned lower than the uppermost end of the coolant line, then vehicle weight and cost are reduced, but excessive coolant loss occurs during cartridge replacement
Solution Approach 1:
The rotatable gate member provides dynamic positioning capability, allowing the ion filter housing to be placed at a lower position during normal operation (reducing vehicle weight) while being able to rotate to the uppermost position during cartridge replacement (preventing coolant loss). This eliminates the need to permanently position the housing at the uppermost end.
Solution Approach 2:
The gate member can be preliminarily positioned or adjusted before cartridge replacement operations. By preparing the gate in advance to the appropriate position, the system ensures that when cartridge replacement is needed, the housing is correctly positioned to prevent coolant loss, while allowing lower positioning during normal operation to reduce vehicle weight.
4Reliability
If the ion filter housing is positioned higher than the uppermost end of the coolant line, then coolant leakage is prevented, but air bubbles are collected and coolant flow is lowered
Solution Approach 1:
The rotatable gate member allows the ion filter housing to dynamically adjust its position. During normal operation, the gate can be positioned to allow optimal coolant flow without excessive height. During cartridge replacement, the gate rotates to position the housing at the uppermost end to prevent coolant leakage, thus avoiding the need to permanently position the housing high where air bubbles would accumulate.
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 design enhances maintainability, reduces coolant loss, and simplifies the configuration of the ion filter, addressing the head restrictions and weight/cost issues in fuel cell systems by allowing for easy replacement and air venting without additional components.
Implementation Method 1
An ion filter cartridge filled with an ion exchange resin is mounted in an ion filter housing
Data Source
AI summary
An ion filter for circulating coolant in a fuel cell stack of a fuel cell vehicle includes a housing including an inlet configured so that a fluid is introduced and an outlet configured so that the fluid is discharged, a filter element accommodated in the housing to filter the fluid, a valve assembly provided on the inlet and configured to operate the flow of the fluid introduced into the housing through the inlet to be allowed or blocked, and a gate member provided in the housing and configured to adjust an operation of the valve assembly.