Integrated Radiator for Fuel Cell Vehicle Thermal Management
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Solution Overview
Problem
Conventional cooling systems for fuel cell vehicles face inefficiencies at high speeds due to insufficient heat management by radiators, leading to increased air resistance and complex system layouts, which degrade performance and packaging characteristics.
Innovation Solution
An integrated radiator with a high temperature region and a low temperature region is used to manage both the fuel cell stack and electrical power apparatus using a single cooling fluid flow, replacing conventional condensers and radiators, thereby enhancing heat radiating efficiency and simplifying the cooling module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the size of the radiator is increased to satisfy heat radiating performance of the fuel cell stack, then heat radiating performance is improved, but system layout becomes complex and packaging/front end collision characteristics are degraded
Solution Approach 1:
The patent combines the radiator for the fuel cell stack and the radiator for the electrical power apparatus into a single integrated radiator structure. This merging eliminates the need for separate radiators and complex interconnections, thereby maintaining adequate heat radiating performance for both systems while simplifying the overall system layout and improving packaging characteristics.
2Reliability
If the size of the radiator is increased to satisfy heat radiating performance of the fuel cell stack, then heat radiating performance is improved, but front end collision characteristics are degraded
Solution Approach 1:
By integrating both radiator functions into one compact unit, the overall size and mass occupying the front end space is reduced. This allows the vehicle structure to maintain better collision characteristics while the integrated radiator still provides sufficient heat dissipation capacity for both the fuel cell stack and electrical power apparatus.
3Adaptability or versatility
If separate circulation lines are used for cooling fluid supply to electrical power apparatus and fuel cell stack, then independent cooling control is achieved, but system complexity increases
Solution Approach 1:
The patent employs a single integrated radiator with internally separated cooling channels that serve both the fuel cell stack and electrical power apparatus. This unified structure allows independent cooling control through separate fluid pathways within the integrated unit, while eliminating the complexity of entirely separate external circulation lines and multiple independent radiator assemblies.
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 solution improves thermal management of the fuel cell vehicle system by optimizing cooling fluid flow rates and exposure times, reducing air resistance, and enhancing front collision performance, allowing the vehicle to operate efficiently at higher speeds with reduced fan capacity.
Implementation Method 1
a single integrated radiator disposed on a front side of the vehicle and configured to cool a cooling fluid by exchanging heat using exterior air
Implementation Method 2
The integrated radiator is classified into a high temperature region and a low temperature region according to a flow form of the cooling fluid such that the fuel cell stack may be cooled with cooling fluid flowing through the high temperature region and the electrical power apparatus is cooled with cooling fluid flowing through the low temperature region
Data Source
AI summary
Disclosed is a cooling system for a fuel cell vehicle which employs a single integrated radiator disposed on a front side of the vehicle and configured to cool cooling fluid by exchanging heat using exterior air to integrally manage a fuel cell stack and an electrical power apparatus. More specifically, the integrated radiator is divided into a first high temperature region and a second low temperature region according to a flow requirements so that the fuel cell stack is cooled with cooling fluid flowing through the high temperature region and the electrical power apparatus is cooled with cooling fluid flowing through the low temperature region.