Removable Fuel Cell Production Unit for Vehicle Maintenance
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Solution Overview
Problem
Fuel cell-powered electricity-supplying systems in vehicles are complex and difficult to maintain, leading to prolonged unavailability when a component is faulty, as they require multiple additional modules for cooling, power electronics, and hydrogen/oxygen supply, making quick repairs challenging.
Innovation Solution
A vehicle electricity supply system with a removable electricity production unit that includes at least two fuel cell stacks, a common cooling circuit, air supply circuit, and gaseous hydrogen supply circuit, allowing for independent removal and replacement of the production unit from the vehicle, reducing downtime during maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If fuel cell-powered electricity supply systems are used to replace diesel motors, then greenhouse gas emissions are reduced, but system complexity and maintenance difficulty increase
Solution Approach 1:
The electricity supply system is divided into separate functional modules: fuel cell stacks, cooling circuit, air supply circuit, hydrogen supply circuit, and electrical connection interface. Each module operates independently and can be serviced separately, reducing overall system complexity while maintaining emission benefits
2Reliability
If multiple additional modules are added for cooling, power electronics, and hydrogen/oxygen supply, then fuel cell system functionality is improved, but maintenance difficulty and downtime increase
Solution Approach 1:
The system separates multiple functional modules (cooling, air supply, hydrogen supply, electrical connections) into distinct, accessible components. This segmentation allows technicians to service individual modules without dismantling the entire system, improving ease of repair while maintaining full functionality
Solution Approach 2:
The fuel cell stacks are extracted as a separate, removable module from the vehicle structure. This extraction allows the stacks to be easily removed and replaced at service centers without requiring vehicle disassembly, significantly reducing maintenance downtime while preserving all necessary cooling and supply functions
3Productivity
If the electricity production unit is made removable for quick replacement, then vehicle availability is improved, but connection interface complexity increases
Solution Approach 1:
The electrical connection interface is designed with multi-functional contacts that simultaneously handle power transmission, control signals, and diagnostic communications. This universal interface design enables quick plug-and-play replacement of the production unit while managing complexity through standardized, multi-purpose connection points
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
Enables quick restoration of vehicle service by allowing the faulty electricity production unit to be replaced without affecting the fuel storage unit, improving vehicle availability and reducing maintenance complexity.
Implementation Method 1
a single common cooling circuit filled with a first fluid for cooling each fuel cell stack
Implementation Method 2
a first thermal exchanger configured for exchanging heat between the first fluid and the second fluid
Implementation Method 3
at least two fuel cell stacks configured for generating a first electrical current having a first voltage
Data Source
AI summary
The invention concerns a vehicle comprising an electricity production unit configured for generating an electrical current, a transformer unit and a fuel storage unit, the production unit comprising at least two fuel cell stacks and a single first electrical connection interface for transmitting the electrical current to the transformer unit. The production unit further comprises a single cooling circuit, an air supply circuit and a single gaseous hydrogen supply circuit for supplying gaseous hydrogen, from the fuel storage unit, to each fuel cell stack. The production unit is separate from the fuel storage unit and connected to the fuel storage unit by a single connection interface, the production unit being removable from the vehicle as an integrated unit independently from the fuel storage unit.