Integrated Cooling Valve for Compact Fuel Cell Loop Switching
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Solution Overview
Problem
Conventional fuel cell thermal management systems (TMS) face challenges due to the separate mounting of multiple valves, which increases housing volume, complicates valve control logic, and hinders weight-lightening and compactness.
Innovation Solution
An integrated cooling control valve capable of controlling five ports using a single actuator, which includes a ball valve with multiple layers to manage coolant flow and direction across various operation sections of the fuel cell TMS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple valves (4-way valve and 3-way valve) are separately mounted in the conventional fuel cell TMS, then the system can implement cooling loop, heating loop, and filter loop functions, but the housing volume increases and the system compactness deteriorates
Solution Approach 1:
The patent combines a 4-way valve and a 3-way valve into a single integrated valve assembly. The 4-way valve body includes integrated 3-way valve mechanisms that share common components such as the valve body, seal elements, and actuation structures. This merging reduces the number of separate valve units required, thereby decreasing housing volume while maintaining the ability to implement cooling loops, heating loops, and filter loops through coordinated operation of the integrated valve ports.
Solution Approach 2:
The 4-way valve body is designed to perform multiple functions by incorporating 3-way valve capabilities within its structure. The same valve body provides both 4-way flow control (for cooling/heating loop switching) and 3-way flow control (for additional circuit configuration), allowing a single component to replace what would traditionally require separate valve units. This multi-functionality reduces overall system volume while preserving full loop control versatility.
2Adaptability or versatility
If multiple valves are separately mounted in the conventional fuel cell TMS, then the system can implement varied loops, but the device complexity and valve control logic become complicated
Solution Approach 1:
By merging the 4-way valve and 3-way valve into a single integrated assembly with shared components and coordinated actuation, the patent reduces the number of independent control systems required. The integrated design allows multiple loops to be configured through a unified control architecture that manages the interconnected ports and flow paths of the combined valve structure, simplifying the overall control logic compared to managing separate valve units with independent control circuits.
3Adaptability or versatility
If multiple valves are separately mounted in the conventional fuel cell TMS, then the system can implement cooling and heating loops, but the number of components increases leading to increased cost and weight
Solution Approach 1:
The patent merges multiple valve functions into a single integrated valve assembly, reducing the total number of discrete components in the thermal management system. The combined 4-way and 3-way valve structure eliminates the need for separate valve housings, mounting brackets, connecting piping, and multiple actuation mechanisms, thereby reducing component quantity while maintaining full cooling and heating loop functionality.
Solution Approach 2:
The integrated valve assembly provides universal thermal management functionality by combining 4-way flow control (for primary cooling/heating loop switching) and 3-way flow control (for additional circuit configuration) within a single component. This multi-functional design replaces what would traditionally require multiple specialized valve units, reducing both component quantity and system weight while preserving complete thermal management capability.
Data Source
AI summary
An embodiment integrated cooling control valve applied to a fuel cell thermal management system (TMS) includes a ball valve having at least three layers, wherein the ball valve includes a valve housing including a first port fluidly connected to a fuel cell stack, a second port coupled to a cathode oxygen depletion (COD) heater, a third port coupled to an ion filter, a fourth port coupled to a radiator, and a fifth port coupled to a coolant supply pump, and a valve plate disposed within the valve housing and including at least three layers to open and close the first port, the second port, the third port, the fourth port, and the fifth port.