18135419. FUEL CELL SYSTEM AND CONTROL METHOD THEREOF simplified abstract (Kia Corporation)

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FUEL CELL SYSTEM AND CONTROL METHOD THEREOF

Organization Name

Kia Corporation

Inventor(s)

Min Gu Park of Hwaseong-si (KR)

FUEL CELL SYSTEM AND CONTROL METHOD THEREOF - A simplified explanation of the abstract

This abstract first appeared for US patent application 18135419 titled 'FUEL CELL SYSTEM AND CONTROL METHOD THEREOF

Simplified Explanation

The patent application describes a fuel cell system with a control method that ensures airtightness inside the cathode of the fuel cell stack even after the fuel cell has stopped operating.

  • Air supply line delivers air to the fuel cell stack
  • Air discharge line releases post-reaction air
  • Stack pressure sensor measures air pressure at the inlet side of the stack
  • Air cutoff valve with a bypass line for controlling air flow
  • Controller determines pressurization time and torque for the air cutoff valve

Potential Applications

The technology can be applied in various fuel cell systems, including automotive, stationary power generation, and portable electronics.

Problems Solved

Ensures airtightness inside the cathode of the fuel cell stack, preventing leaks and maintaining efficiency even after the fuel cell has stopped operating.

Benefits

- Improved safety and reliability of fuel cell systems - Enhanced performance and longevity of fuel cells - Reduced maintenance and operational costs

Potential Commercial Applications

- Automotive industry for fuel cell vehicles - Power generation for residential and commercial buildings - Portable electronic devices for extended battery life

Possible Prior Art

There may be prior art related to control methods for maintaining pressure in fuel cell systems, but specific examples are not provided in the patent application.

Unanswered Questions

How does this technology compare to existing methods of maintaining airtightness in fuel cell systems?

The patent application does not provide a direct comparison with existing methods, so it is unclear how this technology differs or improves upon current practices.

What are the specific criteria used by the controller to determine the pressurization time and torque for the air cutoff valve?

The patent application mentions that the controller determines these parameters, but it does not detail the specific criteria or algorithms used in the decision-making process.


Original Abstract Submitted

A fuel cell system and a control method thereof include an air supply line supplying air to a fuel cell stack and an air discharge line discharging post-reaction air, a stack pressure sensor provided in the air supply line to measure pressure of air at an inlet side of the stack supplied to a cathode side of the fuel cell stack, an air cutoff valve provided with a bypass line connecting the air supply line and the air discharge line in the air cutoff valve, and a controller electrically connected to the stack pressure sensor and the air cutoff valve and configured to determine pressurization time and pressurization torque for the air cutoff valve when the controller concludes that it is necessary to shut off air inside a cathode and control the stack pressure sensor and the air cutoff valve according to the determined pressurization time and the determined pressurization torque so that inside of the cathode is airtight even after stopping of a fuel cell in the fuel cell stack is completed.