18507048. WATER ELECTROLYSIS SYSTEM simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)

WATER ELECTROLYSIS SYSTEM

Organization Name

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor(s)

Nobuyuki Kitamura of Minamitsuru-gun (JP)

WATER ELECTROLYSIS SYSTEM - A simplified explanation of the abstract

This abstract first appeared for US patent application 18507048 titled 'WATER ELECTROLYSIS SYSTEM

The patent application describes a water electrolysis system that generates hydrogen through water electrolysis using a water electrolysis cell with multiple cells in a stack.

• The system includes a water supply side passage for supplying water to the electrolysis stack and a hydrogen side passage for discharging the obtained hydrogen.
• It also features multiple voltage sensors to measure voltages for individual cells or groups of cells, along with a control device.
• The control device acquires voltage data from the sensors, checks if the voltage exceeds a set value, and alerts if an overvoltage is detected.

Potential Applications: - This technology can be used in hydrogen production for various industrial applications. - It can also be applied in renewable energy systems for storing excess energy in the form of hydrogen.

Problems Solved: - The system helps in monitoring and preventing overvoltage situations in water electrolysis cells, ensuring safe and efficient operation.

Benefits: - Improved safety in hydrogen production processes. - Enhanced efficiency and reliability of water electrolysis systems.

Commercial Applications: Hydrogen production plants, renewable energy systems, industrial manufacturing processes.

Questions about the technology: 1. How does the control device determine if an overvoltage has occurred? - The control device compares the measured voltage with a predetermined value to identify overvoltage situations.

2. What are the potential implications of overvoltage in water electrolysis cells? - Overvoltage can lead to increased energy consumption, reduced efficiency, and potential damage to the electrolysis system.

Original Abstract Submitted

Provided is a water electrolysis system that obtains hydrogen by water electrolysis with a water electrolysis cell including a water electrolysis stack having a plurality of the water electrolysis cells, a water supply side passage for supplying water to the water electrolysis stack, a hydrogen side passage for discharging the hydrogen obtained in the water electrolysis stack, a plurality of voltage sensors for measuring voltages for the respective water electrolysis cells or for each group of the water electrolysis cells, and a control device, where the control device is configured to acquire a voltage from each of the voltage sensors, determine whether the voltage is equal to or higher than a predetermined value and notify that an overvoltage has been generated when it is determined that the voltage is equal to or higher than the predetermined value.