Fuel Cell System Case Cable Harness Segmentation
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Solution Overview
Problem
Conventional fuel cell systems face challenges in minimizing the size of the fuel cell system case due to the need for large drawing openings for collective cable harnesses, which compromises waterproofness and increases the risk of cable disconnection or short-circuit during side collisions.
Innovation Solution
The fuel cell system design involves separate surfaces for drawing first and second cable harnesses, with the second harness for higher power supply drawn from a surface that is less susceptible to side collisions, and the first harness disposed in a recessed portion or outward from the second harness outlet, reducing the size of the fuel cell system case and protecting against collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cable harnesses are collectively drawn from one place, then ease of wiring is improved, but the drawing opening size increases and waterproofness deteriorates
Solution Approach 1:
The cable harnesses are divided into two separate groups: a first cable harness for auxiliary machines and a second cable harness for the pump. Each harness is drawn from a different surface of the fuel cell system case, eliminating the need for a single large drawing opening and maintaining waterproofness while facilitating wiring.
2Device complexity
If cable harnesses are collectively drawn from one place, then wiring complexity is reduced, but the fuel cell system case size increases
Solution Approach 1:
The wiring system is segmented into separate pathways for different cable harnesses. The first cable harness exits through a first surface while the second cable harness exits through a second surface, allowing the fuel cell system case to be compact without requiring a large centralized opening.
3Ease of operation
If the second cable harness is drawn from a surface susceptible to side collisions, then ease of access is improved, but reliability deteriorates due to disconnection or short-circuit risk
Solution Approach 1:
The second cable harness, which carries higher power and is more vulnerable to collision damage, is strategically routed to exit from a surface less susceptible to side collisions. This preliminary protective measure prevents potential disconnection or short-circuit issues before they can occur during vehicle operation.
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 design reduces the size of the fuel cell system case, enhances protection against side collisions, and minimizes noise and vibration by segregating high-power cables and signal transmission wires, while maintaining waterproof integrity.
Implementation Method 1
a fuel cell that causes electrochemical reaction of anode gas and cathode gas
Data Source
AI summary
A fuel cell system includes: a fuel cell that causes electrochemical reaction of an anode gas and a cathode gas; a plurality of auxiliary machines that are used for operation of the fuel cell; and a fuel cell system case that is configured to place the fuel cell and the plurality of auxiliary machines therein, wherein, in the fuel cell system case, a surface from which a first cable harness including first electric wire used for supplying electric power to the plurality of auxiliary machines is taken out differs from a surface from which a second cable harness including second electric wire for supplying larger electric power than the electric power of the first electric wire is taken out.