Fuel Cell Vehicle Hydrogen Filling Control Switching
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Solution Overview
Problem
Existing hydrogen filling systems for fuel cell vehicles may interrupt filling or reduce the filling amount due to detected abnormalities in pressure or temperature sensors, potentially leading to incomplete filling and increased filling time, disadvantageous for users seeking maximum hydrogen capacity.
Innovation Solution
A moving body equipped with a storage vessel, pressure and temperature detection means, a communication system for transmitting data signals, and a control means that allows continued filling by switching from communicative to non-communicative filling methods when sensor failures or low power conditions are detected, ensuring maximum hydrogen filling capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communicative filling is performed with sensor monitoring, then filling safety and accuracy are improved, but filling may be interrupted or reduced when sensor abnormalities are detected
Solution Approach 1:
The patent applies dynamics by making the filling method adaptable and changeable based on real-time conditions. The system dynamically switches between communicative filling and non-communicative filling modes depending on sensor status, communication availability, and power conditions. This allows the system to maintain reliability when sensors are functional while ensuring maximum filling quantity when sensors fail or communication is unavailable.
Solution Approach 2:
The patent changes the operational parameters of the filling system based on detected conditions. When sensor abnormalities, communication failures, or low power states are detected, the system changes from communicative filling mode to non-communicative filling mode. This parameter change allows the system to bypass the restrictive safety checks of communicative filling while maintaining acceptable safety through other means, thereby ensuring maximum hydrogen filling quantity.
2Measurement precision
If communicative filling is continuously performed, then data accuracy and monitoring are improved, but filling time increases and power consumption rises
Solution Approach 1:
The patent applies partial action by performing communicative filling only when necessary (when sensors are functional and communication is available). When these conditions are not met, the system switches to non-communicative filling which performs the essential filling function without the time-consuming communication and monitoring overhead. This partial application of communicative filling maintains data accuracy when possible while reducing filling time when not necessary.
Solution Approach 2:
The system periodically checks sensor status, communication availability, and power levels to determine whether to continue communicative filling or switch to non-communicative filling. This periodic evaluation allows the system to maintain measurement precision during communicative filling phases while minimizing overall filling time by switching to faster non-communicative modes when conditions deteriorate.
3Ease of operation
If communicative filling is used, then filling control and monitoring are improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts its operational mode based on power availability. When power levels are sufficient, the system uses communicative filling which provides ease of operation through active monitoring and control. When power levels drop below thresholds or low power mode is detected, the system switches to non-communicative filling which requires minimal power. This dynamic adaptation maintains ease of operation when possible while conserving energy when power is limited.
Solution Approach 2:
The system monitors its own power status and autonomously switches between filling modes to manage power consumption. By detecting low power conditions and automatically transitioning to non-communicative filling, the system serves its own power management needs without external intervention, ensuring continued operation while conserving energy resources.
Data Source
AI summary
A fuel cell vehicle is provided that allows for filling as much fuel gas as possible. The vehicle includes a high-pressure tank, a communication system, a communicative filling ECU that selectively executes communicative filling that transmits a data signal from the communication system to the dispenser and allows hydrogen to be filled by way of the dispenser into the tank at a flowrate dependent on the pressure and the temperature; and non-communicative filling that does not transmit a data signal from the communication system and allows hydrogen to be filled at a predetermined flowrate. The ECU determines, while executing communicative filling, whether this communicative filling can be continued to be executed, and interrupts communicative filling and continues hydrogen filling by switching the filling method to non-communicative filling in response to having determined that continuation of communicative filling is not possible.