Toyota jidosha kabushiki kaisha (20240200205). WATER ELECTROLYSIS APPARATUS simplified abstract

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WATER ELECTROLYSIS APPARATUS

Organization Name

toyota jidosha kabushiki kaisha

Inventor(s)

Nobuyuki Kitamura of Minamitsuru-gun (JP)

Mikio Wakamatsu of Seto-shi (JP)

WATER ELECTROLYSIS APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240200205 titled 'WATER ELECTROLYSIS APPARATUS

Simplified Explanation:

The water electrolysis apparatus described in the patent application controls the voltage of the electric power source during startup and shutdown to ensure a higher average change rate of current density in regions with lower current density compared to regions with higher current density during steady operation.

  • The apparatus includes a water electrolysis stack, water supply side path, hydrogen side path, electric power source, and a controller.
  • The controller adjusts the voltage of the electric power source to optimize the current density distribution during different operational phases.
  • By controlling the voltage in this manner, the efficiency and stability of the water electrolysis process can be improved.

Key Features and Innovation:

  • Voltage control during startup and shutdown phases for optimized current density distribution.
  • Enhanced efficiency and stability of the water electrolysis process.
  • Improved control over the electrolysis stack performance.

Potential Applications:

  • Hydrogen production for fuel cells.
  • Industrial processes requiring hydrogen gas.
  • Renewable energy storage solutions.

Problems Solved:

  • Inefficient current density distribution during startup and shutdown.
  • Lack of control over electrolysis stack performance.
  • Unstable operation of water electrolysis apparatus.

Benefits:

  • Increased efficiency in hydrogen production.
  • Enhanced stability during different operational phases.
  • Improved overall performance of water electrolysis apparatus.

Commercial Applications:

Water Electrolysis Apparatus with Optimized Voltage Control for Enhanced Efficiency and Stability

This technology can be applied in industries such as hydrogen production, renewable energy storage, and industrial processes requiring hydrogen gas. The optimized voltage control ensures improved efficiency and stability, making it a valuable solution for various commercial applications.

Questions about Water Electrolysis Apparatus with Optimized Voltage Control:

1. How does the voltage control impact the efficiency of the water electrolysis process? 2. What are the potential cost savings associated with this technology?


Original Abstract Submitted

a water electrolysis apparatus includes: a water electrolysis stack; a water supply side path; a hydrogen side path; an electric power source that applies the voltage to the water electrolysis stack; and a controller that controls application voltage of the electric power source, in which at times of startup and stop of the water electrolysis apparatus, the controller controls the voltage of the electric power source such that an average change rate of a current density is higher in a region where the current density is equal to or lower than half of a current density at a time of steady operation of the water electrolysis apparatus than in a region where the current density is higher than half of the current density at the time of the steady operation.

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