Fuel Cell System Frame Cable Routing for Cost Reduction
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Solution Overview
Problem
The existing fuel cell systems for vehicles, which employ a monocoque body, incur increased manufacturing costs due to the need for additional floor frame members to protect high-voltage cables and fuel gas lines, making it economically inefficient.
Innovation Solution
A fuel cell system that utilizes an existing monocoque body without additional floor frame members by routing the high-voltage cable along the inner side of a system frame, which is fixed under the vehicle's floor, providing protection against external forces and reducing noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional floor frame members are added to protect high-voltage cables in a monocoque body, then cable protection is improved, but manufacturing cost increases
Solution Approach 1:
The patent merges the cable protection function with the existing monocoque body structure by routing the high-voltage cable along the inner side of the system frame that is already fixed under the floor. This eliminates the need for additional floor frame members while maintaining cable protection, thereby resolving the contradiction between improved reliability and increased manufacturing cost.
Solution Approach 2:
The system frame, which is already installed for supporting fuel cell components, is made to serve a dual function: structural support and cable protection. By routing the high-voltage cable along the inner side of this existing frame, the patent achieves cable protection without adding separate protective structures, thus avoiding increased manufacturing costs while improving reliability.
2Reliability
If additional floor frame members are installed for cable protection, then cable safety is improved, but device complexity increases
Solution Approach 1:
The patent combines the cable protection function with the existing system frame structure. The high-voltage cable is routed along the inner side of the frame members that are already fixed under the floor for supporting fuel cell components. This integration eliminates the need for separate protective frame members, thereby improving cable safety while avoiding increased device complexity.
Solution Approach 2:
The existing system frame structure serves itself by providing both structural support for fuel cell components and protective enclosure for the high-voltage cable. The frame's inherent structure is utilized to protect the cable without requiring additional dedicated protective elements, thus maintaining simplicity while enhancing safety.
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 arrangement effectively protects the high-voltage cable from collisions without additional frame members, reduces noise interference, and maintains the structural integrity of the vehicle, while allowing for a cost-effective implementation of the fuel cell system using existing monocoque body designs.
Implementation Method 1
a fuel cell configured to react fuel gas and oxidizing gas with each other and generate electricity
Data Source
AI summary
A fuel cell system for a vehicle (1) includes a fuel cell (14) configured to react fuel gas and oxidizing gas with each other and generate electricity; a system frame (20) fixed under a floor of a body of the vehicle and supporting the fuel cell (14); a driving motor (43) configured to drive the vehicle, arranged in a motor compartment (R2); and a high-voltage cable (101, 102) configured to transmit high-voltage power generated by the fuel cell (14) to the driving motor (43), the high-voltage cable (101, 102) having apart extended across the system frame, the part is arranged on an inner side of the system frame (20) and is along a frame member (22) of the system frame (20).