The world's first Chinese-made 1000-ton pure electric ship came out

New energy electric boats add heavyweight new army. Recently, the world's first 1000-ton pure battery to drive the entire load ship in Guangzhou lifting water, filling the world tonnage river double electric drive bulk cargo ship blank. Recently, the ship held a launch ceremony and is now undergoing system commissioning. It is expected to start trial sailing next month and plans to launch inland coal transportation early next year. What are the technical innovations of this "Chinese-made" pure electric cargo ship? Does its appearance indicate the future development of cargo ships?

Filling the world tonnage gap

The world's first 2000-ton new energy electric ship invested and developed by Guangzhou Development Ruihua New Energy Electric Ship Co., Ltd. has a total length of 70.5 meters, a width of 13.9 meters, a depth of 4.5 meters, and a design draft of 3.4 meters.

The ship breaks through the limitations of using fuel and gas as power for ordinary transport ships and uses high-performance lithium batteries as the power source for the entire ship. The ship is equipped with a Super capacitor weighing 26 tons plus a super powerful lithium battery. The entire battery capacity is about 2,400 kilowatt-hours, equivalent to about 30-50 electric vehicle battery capacity. Under full load conditions, the speed of the ship can reach a maximum of 12.8 km/h and the endurance can reach 80 km/h.

"The charging time of this ship is only 2.5 hours, and the time to complete the loading and unloading of the entire ship is about 2 hours. When it stops at the dock to load and unload cargo, it can be charged synchronously and the charging process does not delay the work of the ship. The company's general manager, Yanxiaojun, said that the ship did not consume fuel, carbon, sulfur and other exhaust pollutants and PM2 .5 particles during the voyage to achieve zero emissions, and entered the China Classification Society and met the highest level of Green Ship III of the Inland River Green Ship Code. In the future, it can be extended to various types of ships in the river, including bulk cargo ships, container ships, sightseeing tours, passenger ships, traffic ships, and ferries.

According to the ship designer Hangzhou Modern Design Company Chairman Huangjialin, the ship has "five first": the world's first one to use lithium batteries as power, the first one to use a straight rudder paddle as a propulsion system, and the first one. New light mobile cargo cover; China's first dump coal carrier with a closed coal discharge transportation system and the first inland river large coal carrier with green III logo. "The mobile hatch cover and the closed coal unloading transportation system of the inland river light cargo hold solve the problem of coal dust pollution environment during the transportation and unloading of coal by coal carriers. "

The completion of the ship will fill the blank space of the world's twin power driving bulk cargo ships. Guangzhou Development Ruihua New Energy Electric Ship Co., Ltd. has formed a number of electric ship patent technologies during the research and development process.

Solving battery technology problems

There are hardships behind the world's first initiative. The design of the ship breaks through the technical difficulties of the design of large-capacity new energy electric ship, shore power connection and rapid charging system. Its dual electric management system has excellent transient response performance, high energy recovery efficiency, and strong ship power.

"For this technology, the R&D process team has overcome many difficulties. "Yanxiaojun sighed. He said the battery-powered 1000-ton pure electric ship is the world's first, and there is no relevant technical management code. The Wuhan Institute of Standards of China Classification Society worked out the standards for reporting to the higher authorities in a timely manner, and at the same time grasped the design drawings of electric ships to solve technical problems one by one.

The biggest challenge is how to apply large capacity, large quantities of individual batteries to large tonnage ships. He said the battery management system for electric ships and the control system for ship propulsion equipment are particularly demanding. After several years of research, the team continued to test on 500 tons of old bulk carriers and formed a relatively complete electric ship power management system. All this has laid the foundation for the successful development of this 2000 tons new energy electric ship.

"Whether a pure electric ship can be realized depends on whether or not a breakthrough can be achieved in key battery technologies. Batteries are generally large and heavy. If the entire ship is filled with batteries, it does not need to be shipped. It is unrealistic. The batteries are small, but they can't run far. More than a decade ago, some people in the industry began to develop electric boats, but they were stranded because they could not solve the battery problem. Professor Wujiaming of the Department of Ship and Marine Engineering at the School of Civil Engineering and Transportation at South China University of Technology said that the emergence of this pure electric ship lies in a major breakthrough in battery technology. Although it weighs 26 tons, it has reduced the amount of conventional batteries by more than half.

Lead the development of the Environmental Protection transportation industry for inland river vessels

"Green ships are the mainstream direction of the development of the shipping industry. Pure electric ships are born in this context. "In the face of increasing pressure from the shipping industry to save energy and reduce emissions, many countries have implemented strict ship emission standards. If they do not meet the standards, ships can not dock at all, forcing ship manufacturing to work in this direction.

He said that controlling carbon dioxide emissions has always been the focus of the shipping industry. The International Maritime Organization has set up an energy efficiency design index for ships to increase the volume of ship transportation during the design phase of ships and reduce the emissions of carbon dioxide, nitrogen oxides and sulphides by various means. This index must be calculated for new shipbuilding of more than 400 gross tons started after 2013. "This is only a design indicator that encourages ship design units, shipyards, and equipment manufacturers to adopt various measures to improve ship energy efficiency and promote technological progress and innovation, regardless of the operation of the ship."

Under the pressure of environmental protection, the new energy of ships is imperative. The electrification of inland shipping vessels is one of the exploration directions, especially electric boats and dual-fuel power vessels, which can greatly reduce the emission of nitrogen oxides and sulfides. He said that due to the limitation of charging, the ship is mainly "point-to-point" transportation between the coal terminal and the power plant, and it is temporarily unable to sail in the open sea. However, it has taken a key step in the design of green ships and will lead the development of the environmentally-friendly transportation industry of inland vessels and play an active role in promoting and demonstrating the development of energy-saving and environmentally friendly green vessels.

The page contains the contents of the machine translation.