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Establishment of a 1.5 ton storage facility capable of charging 200 vehicles in Japan, simultaneously and continuously charging 3 buses in 5 to 10 minutes
Applying compressor control technology, charging station area is ↓ 1/3 of the existing size, and 30 hydrogen charging stations will be built within 5 years.
HyIS-One Co., Ltd. (CEO Seong-wook Kwon), a comprehensive hydrogen infrastructure service company, has started operating the world's first hydrogen charging station that stores and recharges gaseous hydrogen in a large-capacity storage container. Simultaneous and continuous charging is possible and the facility space is greatly reduced by minimizing the compressor, so it is expected that deployment will expand mainly in urban areas and bus garages.
Hisone recently completed the construction of a gaseous hydrogen storage facility and a hydrogen bus charging station at the bus garage in Geumhoe-dong, Geumjeong-gu, Busan, operated by Samsung Passenger Co., Ltd., received completion approval, and began operation.
The biggest feature of this hydrogen bus charging station is that it was the first in the world to build a 1.5-ton hydrogen storage facility. Currently, a general gas hydrogen charging station docks a tube trailer storing 250 kg of hydrogen at a pressure of 200 bar, charges the hydrogen, and replaces it when all is used up. As a result, the supply cost increases because the tube trailer must be kept on standby until all the hydrogen is used, and hydrogen charging is often stopped when there is a disruption in the hydrogen supply. This is pointed out as a major obstacle to the spread of hydrogen vehicles.
I n particular, commercial vehicles such as hydrogen buses use a lot of hydrogen and take a long time to charge, so there is a great inconvenience in charging them at general gas hydrogen charging stations. In the case of a hydrogen bus, 34kg of hydrogen is used, which is more than 5 times more than the Nexo hydrogen car. The government is investing subsidies to convert existing diesel and CNG buses into hydrogen buses. According to the Ministry of Environment, as of last July, the number of hydrogen buses registered in Korea exceeded 1,000, and there are plans to expand large-capacity gaseous hydrogen charging stations and liquefied hydrogen charging stations to supply about 20,000 units by 2030.
The HyIS-One hydrogen charging station is equipped with a 1.5-ton hydrogen storage facility, capable of storing and supplying a total of more than 3 tons of hydrogen per day, allowing it to charge more than 200 commercial vehicles, including buses and trucks, per day without anchoring tube trailers. The Type 1 metal gas container used in the hydrogen storage facility was manufactured by DS(DUKSAN) AETHER CT Co., Ltd., a domestic manufacturer specializing in ultra jumbo gas containers.
In particular, HyIS-One Co., Ltd uses a lot of rechargeable charging stations and applied various technologies to solve the problem of securing parts, which is another obstacle to the spread of charging stations. A method of stacking 36 aluminum storage containers into 6 containers was adopted to comply with safety regulations, and the number of hybrid charging stations was reduced to 2, which is 1/3 of the existing general charging station. Debug is a product developed by Dongwha Entec. It can be debugged into a container by immediately boosting the compressed size of 250 bar to 850 bar, so you can pay for operation and maintenance.
Due to this optimal facility arrangement, the total site area is only 990m2, including three hydrogen chargers, hydrogen storage facilities, tube trailer unloading space, and machine room, which is one-third of the existing charging stations of the same class.
Regarding this, Yongdeuk Choi, Executive Director of HyIS-One, said, “Due to the nature of the bus garage, many vehicles must be parked at night, and compactization is essential to install a hydrogen charging station in expensive areas such as the metropolitan area.” “We are amazed after touring HIS1’s hydrogen charging station built using , and consultations on its construction are continuing,” he said.
In addition, the High One hydrogen charging station is designed to supply 300 kg of hydrogen per hour with two compressors, and can continuously charge three buses at the same time with three hydrogen chargers. Through collaboration with TATSUNO, a global hydrogen dispenser specialist, the charging speed of hydrogen dispensers has also been improved by more than 50%. At the actual charging station site, even though three buses were charging hydrogen at the same time, it was seen that each bus was fully charged in about 10 minutes.
HyIS-One also paid a lot of attention to operating a safe and efficient hydrogen charging station. We installed an ultrasonic detector that can immediately detect within a 20m radius in the unlikely event that even a trace amount of hydrogen leaks. In addition, the thickness of the protective wall was built at 22cm, which is higher than the value set by law (12cm). In addition, a system has been established to monitor all processes of hydrogen unloading, storage, and charging in real time, making it possible to operate with a minimum number of people.
Currently, a total of 26 hydrogen buses are being charged at the High One hydrogen charging station, and profitability is expected to increase as the number is planned to increase to 36 in December and 60 in the first half of 2025.
Furthermore, in order to further stabilize the supply of hydrogen, HyIS-One plans to conduct a demonstration with DS(DUKSAN) AETHER CT of unloading hydrogen into a storage facility using a Type 4 tube trailer with a pressure of 450 bar. The 450-bar Type 4 tube trailer, made by wrapping carbon fiber, can transport 1 ton of hydrogen at once, which is about 3 times more than the existing Type 1, reducing the number of tube trailer transports and making hydrogen unloading and charging efficient. Following the development of the Type 4 hydrogen container, DS(DUKSAN) AETHER CT plans to release a 450 bar, 1.1 ton tube skid next year with a reduced container size and increased pressure.
HyIS-One has completed the patent for a new storage-unloading hydrogen charging station technology and plans to build hydrogen charging stations in 30 locations within 5 years, focusing on bus garages, through collaboration with bus transportation companies. The company was selected for the Ministry of Environment's private capital subsidy contest in 2023 and is expanding its business by securing subsidies for four sites, including Geumjeong in Busan, Jung-gu in Incheon, Singil in Ansan, and Aewol in Jeju. Hydrogen buses are expected to expand in distribution starting from city buses to metropolitan buses, so there is an urgent need to build large-capacity hydrogen charging stations.
Seongwook Kwon, CEO of HyIS-One, said, “With the spread of various forms of mobility such as hydrogen passenger cars, commercial vehicles, and forklifts, the demand for customized hydrogen charging stations is increasing.” He added, “His1 has core technology that allows flexible design to suit various types of sites. “Based on this, we will leap forward to become a leading company in the global hydrogen infrastructure market beyond Korea.”