Fuel Cell Stack Front Panel Protrusion for Crash Protection
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Solution Overview
Problem
Existing fuel cell vehicle designs face challenges in compactly and efficiently arranging fuel gas, oxidant gas, and coolant devices, and protecting them during vehicle crashes, as conventional piping structures may not adequately safeguard these components.
Innovation Solution
A fuel cell vehicle design featuring a fuel cell stack with end plates and a front side panel that includes a protruding end portion to cover the fuel gas device, providing protection without the need for a dedicated protection structure, and optionally a back side panel with a protruding end portion to cover the fuel gas device from the rear, ensuring minimal damage from external loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional piping structures are used to connect fuel cell stack components, then the arrangement of fuel gas devices and oxidant gas devices can be simplified, but adequate protection of pipes and devices during vehicle crashes cannot be ensured
Solution Approach 1:
The patent merges the protection function into the existing front side panel structure by adding a protruding end portion. This integrates the protective function with the panel's structural role, eliminating the need for separate protection structures while ensuring adequate coverage of fuel gas devices and pipes during crashes.
Solution Approach 2:
The front side panel is designed to serve multiple functions: it acts as a structural component of the fuel cell stack housing and simultaneously provides crash protection for fuel gas devices through its protruding end portion. This multi-functional design simplifies the overall arrangement while maintaining protection reliability.
2Reliability
If dedicated protection structures are added to protect fuel gas devices and pipes during crashes, then protection reliability is improved, but device complexity and space requirements increase
Solution Approach 1:
Instead of adding separate protection structures, the patent combines the protection function with the existing front side panel by extending its end portion. This integration avoids increasing device complexity while maintaining adequate protection for fuel gas devices and connected pipes during vehicle crashes.
Solution Approach 2:
The front side panel is designed to perform dual functions: structural support for the fuel cell stack and crash protection for fuel gas devices. This multi-functionality eliminates the need for additional dedicated protection structures, keeping the overall system compact and simple.
3Productivity
If fuel gas devices are arranged on end plates without additional protection, then arrangement efficiency is improved, but vulnerability to external loads during crashes increases
Solution Approach 1:
The protruding end portion of the front side panel is designed in advance to counteract crash forces before they can reach the fuel gas devices. This preliminary protective structure blocks external loads from directly impacting the devices, maintaining arrangement efficiency while reducing crash vulnerability.
Solution Approach 2:
The protruding end portion acts as an intermediary protective element between the external crash environment and the fuel gas devices. It absorbs and redirects impact forces, preventing direct damage to the devices while allowing them to remain positioned on the end plates for efficient arrangement.
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 allows for a compact and efficient arrangement of fuel cell components while minimizing damage from external loads, eliminating the need for additional protection structures and ensuring reliable operation.
Implementation Method 1
Each of the fuel cells generates electric power by an electrochemical reaction between a fuel gas and an oxidant gas
Data Source
AI summary
A fuel cell vehicle includes a fuel cell stack, a front side panel, and a fuel gas device. The fuel cell stack includes a plurality of fuel cells, one end and another end, a first end plate, and a second end plate. The first end plate is disposed at the one end. The second end plate is disposed at the another end. The front side panel is connected to side surfaces of the first and second end plates. The side surfaces face forward in a vehicle driving direction. The front side panel includes a first protruding end portion that protrudes from the first end plate outward in a vehicle width direction. The fuel gas device is disposed on the first end plate so as to be covered by the first protruding end portion when seen from a front side in the vehicle driving direction.