18605716. STATE DETERMINATION DEVICE FOR FUEL CELL STACK simplified abstract (SUBARU CORPORATION)
STATE DETERMINATION DEVICE FOR FUEL CELL STACK
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STATE DETERMINATION DEVICE FOR FUEL CELL STACK - A simplified explanation of the abstract
This abstract first appeared for US patent application 18605716 titled 'STATE DETERMINATION DEVICE FOR FUEL CELL STACK
Simplified Explanation: The patent application describes a device for determining the state of a fuel cell stack by applying a measurement load waveform to the cell and analyzing the impedance response.
- The control device generates a learning waveform to establish reference values for membrane resistance, charge transfer resistance, and diffusion resistance.
- It then calculates the amplitude and frequencies for the measurement load waveform based on the learning waveform.
- The device measures the alternating-current impedance by discharging a current or voltage from the cell at the frequency of the measurement load waveform.
Key Features and Innovation:
- Utilizes a learning waveform to establish reference values for various resistances in the fuel cell stack.
- Calculates the measurement load waveform based on the learning waveform to analyze the impedance response.
- Measures the alternating-current impedance to determine the state of the fuel cell stack accurately.
Potential Applications: This technology can be applied in fuel cell systems for automotive, stationary power generation, and portable electronics.
Problems Solved:
- Provides a more accurate and efficient method for determining the state of a fuel cell stack.
- Helps in optimizing the performance and longevity of fuel cell systems.
Benefits:
- Enhanced accuracy in state determination of fuel cell stacks.
- Improved efficiency and performance of fuel cell systems.
- Extended lifespan of fuel cell stacks.
Commercial Applications: Potential commercial applications include fuel cell vehicles, backup power systems, and portable electronic devices, leading to advancements in clean energy technologies.
Questions about Fuel Cell State Determination: 1. How does the device calculate the measurement load waveform based on the learning waveform? 2. What are the specific benefits of using this state determination device in fuel cell systems?
Frequently Updated Research: Ongoing research in this field focuses on further optimizing the state determination process for fuel cell stacks and exploring new applications in different industries.
Original Abstract Submitted
A state determination device for a fuel cell stack includes: a fuel cell stack including at least one cell; and a control device that performs a state determination of the fuel cell stack by applying a measurement load waveform to the cell. The control device: generates a learning waveform; generates a measurement load waveform to be used this time by using, as reference values, membrane resistance, charge transfer resistance, and diffusion resistance in a relationship between a measurement frequency and an impedance that are generated based on the learning waveform; applies, to the cell, a waveform with an amplitude and frequencies that are calculated based on the measurement load waveform; and performs the state determination by measuring an alternating-current impedance by discharging, from the cell, a current or a voltage corresponding to a frequency of the measurement load waveform.
