Hydrogen Tank Charging Control With Valve Feedback
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Solution Overview
Problem
Hydrogen vehicles face challenges in stable hydrogen charging due to varying hydrogen supply methods and conditions across different charging stations, which can lead to inefficient charging and reduced state of charge, especially when temperature and pressure conditions are not optimally managed.
Innovation Solution
A device with a flow volume adjustment valve and a charging control unit that adjusts hydrogen charging speed based on real-time temperature and pressure conditions, ensuring optimal charging by controlling the opening amount of the valve to match target and real-time charging speeds, thereby stabilizing the state of charge and minimizing charging time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hydrogen is charged to the hydrogen tank up to maximum pressure without temperature control, then the charging speed is increased, but the state of charge is insufficient when temperature exceeds predetermined range
Solution Approach 1:
The patent implements dynamic control of hydrogen charging speed by adjusting the opening amount of the flow volume adjustment valve based on real-time temperature and pressure conditions. The charging control unit continuously monitors tank temperature and pressure, and dynamically adjusts the valve opening to maintain optimal charging speed while preventing temperature from exceeding the predetermined range, thereby ensuring both high productivity and reliable state of charge.
Solution Approach 2:
The patent employs a feedback control mechanism where the charging control unit receives real-time temperature and pressure data from the hydrogen tank, compares these values against predetermined ranges, and adjusts the flow volume adjustment valve accordingly. This closed-loop feedback system ensures that charging speed is optimized while maintaining temperature within safe limits, resolving the contradiction between charging speed and state of charge reliability.
2Reliability
If communication device is constructed between vehicle and charging station, then stable charging is achieved, but device complexity increases
Solution Approach 1:
The patent implements a self-service charging control system where the vehicle's charging control unit autonomously manages the hydrogen charging process. The system independently monitors tank temperature and pressure, determines appropriate charging speeds, and adjusts the flow volume adjustment valve without requiring communication with the charging station. This eliminates the need for complex communication devices while maintaining charging stability through self-regulation based on real-time sensor data.
3Productivity
If flow volume adjustment valve is used to control hydrogen charging speed, then charging efficiency is improved, but device complexity increases
Solution Approach 1:
The patent utilizes a flow volume adjustment valve that controls hydrogen charging speed by changing the opening amount parameter. The charging control unit adjusts this single parameter based on temperature and pressure conditions to optimize charging efficiency. While the valve adds a component, it is a relatively simple actuator that provides precise control over charging flow rate, improving productivity with minimal increase in overall system complexity.
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 solution enables efficient and stable hydrogen charging across different hydrogen supply methods, ensuring sufficient state of charge while minimizing charging time and compensating for interruptions in hydrogen supply, all without additional costs when changing hydrogen tank types.
Implementation Method 1
a flow volume adjustment valve mounted and provided on an inlet of the hydrogen tank, and configured to adjust a real-time hydrogen charging speed of the hydrogen tank depending upon an opening amount thereof
Implementation Method 2
a charging control unit electrically connected to the flow volume adjustment valve and provided in a vehicle mounted with the hydrogen tank, and configured to determine a target hydrogen charging speed of the hydrogen tank according to an external air temperature and a temperature and a pressure of the hydrogen tank and determine and control the opening amount of the flow volume adjustment valve according to the target hydrogen charging speed and the real-time hydrogen charging speed of the hydrogen tank
Data Source
AI summary
A device for controlling a charging of a hydrogen tank for a vehicle, may efficiently perform a charging of a hydrogen tank regardless of a hydrogen charging protocol for each charging station configured to supply hydrogen to the hydrogen tank by directly controlling a hydrogen charging speed of the hydrogen tank in a vehicle upon charging the hydrogen tank mounted in the vehicle.